Novel inductor

Abstract

The utility model discloses a novel inductor which comprises a magnetic core assembly, and the magnetic core assembly comprises two magnetic core cover plates, at least one magnetic core middle column and a coil. The magnetic core middle columns are arranged in parallel, each magnetic core middle column is of a columnar structure and is made of an iron-silicon magnetic powder core, the outer side of each magnetic core middle column is correspondingly sleeved with a coil, each coil is formed by vertically winding a single wire in the axial direction of the corresponding magnetic core middle column, and the turn-to-turn distance of each coil is gt; the two ends of the magnetic core middle column are arranged on the two magnetic core cover plates in a bonding mode respectively. The iron-silicon magnetic powder core is adopted by the magnetic core middle column of the inductor to replace a silicon steel sheet / block for tedious insertion assembly, the performance is relatively stable, the weight of the whole product is reduced, inductor assembly can be rapidly and accurately completed, and the machining and production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of inductor manufacturing, in particular to a novel high-current inductor. Background Art

[0002] Inductor is a circuit element that can convert electrical energy into magnetic energy and store it. It is the most basic component of electronic equipment. In the circuit, it mainly plays the role of filtering, oscillation, delay, trapping, etc. It also has the functions of screening signals, filtering noise, stabilizing current and suppressing electromagnetic interference. It is widely used in various electronic products such as aerospace, aviation, communications, and household appliances.

[0003] The structure of the inductor in the prior art is as follows: Figure 1 As shown, it includes a magnetic core 1', which is formed by stacking multiple block silicon steels 2' up and down. L-shaped connectors 3' are provided at the four corners of the outer side of the magnetic core 1' to fix the multiple block silicon steels 2' stacked up and down, and then a frame structure 4' made of copper foil is closely arranged on the outer side as a coil, and then the uppermost and lowermost block silicon steels 2' are respectively installed on the upper mounting seat 5' and the lower mounting seat 6'. Since the inductor structure uses multiple block silicon steel inserts to assemble the magnetic core, the product weight is heavy, the assembly process has many steps and is cumbersome, and the magnetic core is not convenient to be installed on the fixed bracket later, which affects the processing and production efficiency. Utility Model Content

[0004] In order to solve the problems existing in the above-mentioned background technology, the utility model provides a new type of inductor, whose magnetic core center column adopts iron silicon magnetic powder core to replace the cumbersome plug-in assembly of silicon steel sheets / blocks, has relatively stable performance, reduces the overall product weight, can quickly and accurately complete the inductor assembly, and improves processing and production efficiency.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a novel inductor, comprising a magnetic core component, wherein the magnetic core component comprises two magnetic core cover plates, at least one magnetic core middle column and a coil;

[0007] The core columns are placed parallel to each other, the core columns are columnar structures, and are made of iron silicon magnetic powder core. Coils are respectively sleeved on the outer sides of the core columns, and the coils are formed by vertically winding a single wire along the axial direction of the core column. The inter-turn spacing of the coils is >0.5mm, and the two ends of the core column are respectively bonded to the two core cover plates.

[0008] Furthermore, a fixing bracket is included, and the magnetic core assembly can be detachably mounted on the fixing bracket.

[0009] Since the two ends of the core center column are assembled to the two core cover plates by bonding, the bonding strength between them cannot be effectively guaranteed for a long time during use. In order to avoid the two ends of the core center column from being separated from the two core cover plates, a fixed bracket is provided to further fix the connection between the two ends of the core center column in the core assembly and the two core cover plates.

[0010] Furthermore, the fixing bracket includes two end fixings and a screw connector, the two magnetic core cover plates are respectively positioned and installed in the two end fixings, and the two end fixings are fixedly assembled by at least one screw connector.

[0011] In order to realize convenient and quick assembly of the fixing bracket and the magnetic core assembly, the structure of the fixing bracket is designed, including two end fixings and a screw connector. Firstly, the two end fixings are respectively positioned and assembled with the magnetic core cover plates located at both ends of the magnetic core center column, and then the two end fixings are fixedly connected together by the screw connector, thereby achieving the purpose of reinforcing the connection between the two ends of the magnetic core center column and the two magnetic core cover plates.

[0012] Furthermore, the end fixing member includes two U-shaped frames, and the two U-shaped frames are respectively adapted to be installed on opposite sides of the outer side of the magnetic core cover plate, and the main part of the U-shaped frame is formed with a mounting end away from the direction of the magnetic core assembly. The two side arms of the two U-shaped frames are respectively connected by screw connectors to embrace the two U-shaped frames and fix them to the magnetic core cover plate to form a whole.

[0013] In another specific embodiment, the two U-shaped frames in the end fixing member can be movably clamped on the opposite sides of the outer side of the same magnetic core cover plate, and then the side arms of the two U-shaped frames are correspondingly locked and connected through the screw connecting member, so that the two U-shaped frames are embraced and fixed on the outer side of the magnetic core cover plate, and the purpose of reinforcing the connection between the two ends of the magnetic core middle column and the two magnetic core cover plates can be achieved. The main part of the U-shaped frame is formed with a mounting end, which is convenient for fixing and installing the inductor formed after assembly.

[0014] Furthermore, a transverse limiting plate is formed on the main body of the U-shaped frame, and the transverse limiting plate is tightly attached to the corresponding end of the magnetic core cover plate.

[0015] By providing a transverse limiting plate, which fits closely with the end of the magnetic core cover plate, the positioning and fixing effect of the end fixing piece on the magnetic core cover plate is further ensured.

[0016] Furthermore, the two end fixing members are fixedly assembled by two screw connecting members, and the two screw connecting members are respectively located on two opposite sides of the magnetic core assembly.

[0017] The structure of the two U-shaped frames and the screw connectors in the end fixing parts can fix the positioning of the magnetic core cover plate. Therefore, the two end fixing parts can be firmly connected only by two screw connectors, and the purpose of reinforcing the connection between the two ends of the magnetic core center column and the two magnetic core cover plates is also achieved.

[0018] Furthermore, an insulating plate is provided between the magnetic core cover plate and the coil end, and the end of the magnetic core center column passes through the insulating plate and is bonded to the corresponding magnetic core cover plate.

[0019] An insulating plate is provided to separate the coil and the two magnetic core cover plates, thereby playing an insulating role.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] In the utility model, an iron silicon magnetic powder core is used to make a magnetic core center column to replace the cumbersome plug-in assembly of silicon steel sheets / blocks, the performance is relatively stable, and the overall product weight is reduced. The ends of the magnetic core center column are glued together with the magnetic core cover plate by glue and then dried, so that the inductor assembly can be completed quickly and accurately, thereby improving the processing and production efficiency. The coil is formed by vertically winding a single wire along the axial direction of the magnetic core center column, and the inter-turn spacing of the coil is>0.5mm, so the heat dissipation effect is good. Due to the single-layer winding structure, the parasitic capacitance between layers is small, and the adjacent loss is low, which solves the problems of low power density, poor heat dissipation effect and heavy weight of the large current reactor in the existing structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Figure 1 It is a schematic diagram of the structure of an inductor in the prior art (one of the magnetic cores is exposed);

[0024] Figure 2 is a schematic structural diagram of the magnetic core assembly in Example 1;

[0025] Figure 3 It is a schematic diagram of the local structure of the middle column of the magnetic core in Example 1;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the magnetic core assembly and the fixing bracket in the second embodiment;

[0027] Figure 5 It is a side structural schematic diagram of the magnetic core assembly and the fixing bracket in the embodiment 2;

[0028] Figure 6 is a schematic structural diagram of the end fixing member in Example 2;

[0029] Among them, the specific drawings are marked as:

[0030] Magnetic core 1', block silicon steel 2', L-shaped connector 3', frame structure 4', upper mounting seat 5', lower mounting seat 6',

[0031] Magnetic core assembly 1, magnetic core cover plate 101, insulating plate 102, magnetic core center column 103, coil 104, coil lead wire 105,

[0032] Fixed bracket 2,

[0033] End fixing piece 201 , U-shaped frame 202 , main body 203 , side arm 204 , transverse limiting plate 205 , mounting end 206 , screw connecting piece 207 . DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Example 1

[0036] This embodiment discloses a new type of inductor, such as Figure 2 and Figure 3 As shown, it includes a magnetic core component 1, which includes two magnetic core cover plates 101, at least one magnetic core column 103 and a coil 104; in this embodiment, two parallel magnetic core columns 103 are provided, the magnetic core column 103 is a columnar structure, and its material is an iron silicon magnetic powder core, and coils 104 are respectively sleeved on the outer sides of the magnetic core columns 103, and coil lead wires 105 are provided at the ends of the coils 104. The coils 104 are formed by vertically winding a single wire along the axial direction of the magnetic core column 103, and the inter-turn spacing of the coils 104 is>0.5mm. The two ends of the magnetic core column 103 are respectively bonded and set on the two magnetic core cover plates 101. The wire consists of an inner core and an outer film layer wrapped around the outside of the inner core. The outer film layer is a polyesterimide film, and the inner core is a flat copper wire. The coil 104 is wound with a flat copper wire with a large cross-sectional area, which can effectively reduce the resistance of the copper wire and thus reduce the loss. The polyesterimide film is used as the outer film layer of the coil 104. Its insulation structure is stable, heat-resistant, radiation-resistant, and flame-retardant, which can improve the safety of the inductor operation and extend its service life.

[0037] Specifically, an insulating plate 102 is provided between the core cover plate 101 and the end of the coil 104, the end of the core center column 103 passes through the insulating plate 102 and is bonded to the corresponding core cover plate 101. The insulating plate 102 is provided to separate the coil 104 and the two core cover plates 101 to play an insulating role.

[0038] In the present application, an iron silicon magnetic powder core is used to make a magnetic core center column 103 to replace the cumbersome plug-in assembly of silicon steel sheets / blocks. The performance is relatively stable and the overall product weight is reduced. The ends of the magnetic core center column 103 are glued together with the magnetic core cover plate 101 by glue and then dried. The inductor assembly can be completed quickly and accurately, thereby improving the processing and production efficiency. The coil 104 is formed by vertically winding a single wire along the axial direction of the magnetic core center column 103, and the inter-turn spacing of the coil 104 is >0.5mm, so the heat dissipation effect is good. Due to the use of a single-layer winding structure, the parasitic capacitance between layers is small and the adjacent loss is low, which solves the problems of low power density, poor heat dissipation effect and heavy weight of large current inductors in the existing structure.

[0039] Example 2

[0040] This embodiment discloses a new type of inductor, such as Figure 4 , Figure 5 and Figure 6 As shown, compared with Example 1, it further includes a fixing bracket 2, and the magnetic core assembly 1 can be detachably mounted on the fixing bracket 2. Since the two ends of the magnetic core center column 103 are assembled to the two magnetic core cover plates 101 by bonding, the bonding firmness between them cannot be effectively guaranteed for a long time during use. In order to avoid the two ends of the magnetic core center column 103 from being separated from the two magnetic core cover plates 101, the fixing bracket 2 is provided to further fix the connection between the two ends of the magnetic core center column 103 in the magnetic core assembly 1 and the two magnetic core cover plates 101.

[0041] Specifically, the fixing bracket 2 includes two end fixings 201 and a screw connector 207. The two magnetic core cover plates 101 are respectively positioned and installed in the two end fixings 201, and the two end fixings 201 are fixedly assembled by at least one screw connector 207. In order to realize the convenient and rapid assembly of the fixing bracket 2 with the magnetic core assembly 1, the structure of the fixing bracket 2 is designed, including two end fixings 201 and a screw connector 207. First, the two end fixings 201 are respectively positioned and assembled with the magnetic core cover plates 101 located at both ends of the magnetic core middle column 103, and then the two end fixings 201 are fixedly connected together by the screw connector 207, so as to achieve the purpose of reinforcing the connection between the two ends of the magnetic core middle column 103 and the two magnetic core cover plates 101.

[0042] Specifically, the end fixing member 201 includes two U-shaped frames 202, and the two U-shaped frames 202 are respectively adapted to be installed on the opposite sides of the outer side of the magnetic core cover plate 101, and the main part 203 of the U-shaped frame 202 is formed with a mounting end 206 in the direction away from the magnetic core assembly 1, and the two side arms 204 of the two U-shaped frames 202 are respectively connected by screw connectors 207, so that the two U-shaped frames 202 are embraced and fixed with the magnetic core cover plate 101 to form a whole. In this embodiment, the two U-shaped frames 202 in the end fixing member 201 can be movably clamped on the opposite sides of the outer side of the same magnetic core cover plate 101, and then the side arms 204 of the two U-shaped frames 202 are correspondingly locked and connected by the screw connectors 207, so that the two U-shaped frames 202 are embraced and fixed on the outer side of the magnetic core cover plate 101, so as to achieve the purpose of reinforcing the connection between the two ends of the magnetic core center column 103 and the two magnetic core cover plates 101. A mounting end 206 is formed on the main body 203 of the U-shaped frame 202 to facilitate fixing and mounting the assembled inductor.

[0043] The main body 203 of the U-shaped frame 202 is formed with a transverse limiting plate 205, which is closely attached to the corresponding end of the magnetic core cover plate 101. By providing the transverse limiting plate 205, it fits with the end of the magnetic core cover plate 101, further ensuring the positioning and fixing effect of the end fixing member 201 on the magnetic core cover plate 101.

[0044] The two end fixing members 201 are fixedly assembled by two screw connectors 207, and the two screw connectors 207 are respectively located at opposite sides of the magnetic core assembly 1. The structure in which the two U-shaped frames 202 in the end fixing member 201 cooperate with the screw connector 207 can well position and fix the magnetic core cover plate 101. Therefore, the two end fixing members 201 can be stably connected only by the two screw connectors 207, and the purpose of reinforcing the connection between the two ends of the magnetic core middle column 103 and the two magnetic core cover plates 101 is also achieved.

[0045] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of inductor, characterized in that: It comprises a magnetic core assembly (1), wherein the magnetic core assembly (1) comprises two magnetic core cover plates (101), at least one magnetic core center column (103) and a coil (104); The magnetic core columns (103) are placed parallel to each other, the magnetic core columns (103) are columnar structures, and are made of iron silicon magnetic powder cores. Coils (104) are respectively sleeved on the outer sides of the magnetic core columns (103), and the coils (104) are formed by vertically winding a single wire along the axial direction of the magnetic core column (103). The inter-turn spacing of the coils (104) is greater than 0.5 mm. The two ends of the magnetic core column (103) are respectively bonded and arranged on the two magnetic core cover plates (101).

2. The novel inductor according to claim 1 is characterized in that: It also comprises a fixing bracket (2), and the magnetic core assembly (1) can be detachably mounted on the fixing bracket (2).

3. The novel inductor according to claim 2 is characterized in that: The fixing bracket (2) comprises two end fixing members (201) and a screw connecting member (207); the two magnetic core cover plates (101) are respectively positioned and installed in the two end fixing members (201); and the two end fixing members (201) are fixedly assembled by at least one screw connecting member (207).

4. The novel inductor according to claim 3 is characterized in that: The end fixing member (201) comprises two U-shaped frames (202), the two U-shaped frames (202) are respectively adapted to be installed on opposite sides of the outer side of the magnetic core cover plate (101), the main body (203) of the U-shaped frame (202) is formed with a mounting end (206) in a direction away from the magnetic core assembly (1), and the two side arms (204) of the two U-shaped frames (202) are respectively connected by screw connecting members (207), so that the two U-shaped frames (202) are embraced and fixed to the magnetic core cover plate (101) to form a whole.

5. The novel inductor according to claim 4 is characterized in that: The main body (203) of the U-shaped frame (202) is formed with a transverse limiting plate (205), and the transverse limiting plate (205) is tightly attached to the corresponding end of the magnetic core cover plate (101).

6. The novel inductor according to claim 4 or 5, characterized in that: The two end fixing members (201) are fixedly assembled via two screw connecting members (207), and the two screw connecting members (207) are respectively located on two opposite sides of the magnetic core assembly (1).

7. The novel inductor according to claim 1 is characterized in that: An insulating plate (102) is provided between the magnetic core cover plate (101) and the end of the coil (104); the end of the magnetic core center column (103) passes through the insulating plate (102) and is bonded to the corresponding magnetic core cover plate (101).

8. The novel inductor according to claim 1 is characterized in that: The wire consists of an inner core and an outer film layer wrapped around the outer side of the inner core, the outer film layer is a polyester imide film, and the inner core is a flat copper wire.

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