Inductor

Abstract

The utility model relates to an inductor, which comprises a winding frame, a first coil, a second coil, a first coil and a second coil, the first opening is communicated with the second opening; the wire group is wound on the wire winding frame; the first magnetic structure is arranged in the first opening; the second magnetic structure is arranged at the second opening and is opposite to the first magnetic structure, an air gap is formed between the first magnetic structure and the second magnetic structure, and the air gap is located in the reel; the at least one magnetic sheet is arranged in the air gap; and the at least one separator is arranged between the magnetic sheet and the first magnetic structure and / or between the magnetic sheet and the second magnetic structure, and the separator and the magnetic sheet are coaxially arranged. According to the inductor, the air gap is segmented, uniform distribution of a magnetic field is achieved, the inductor is prevented from inductance saturation, the inductor is kept at a low temperature, the use performance of the inductor is improved, and the material cost is saved.

Description

Technical Field

[0001] The utility model relates to an electrical component, in particular to an inductor. Background Art

[0002] The inductor in the related art is usually located in a winding frame and forms an air gap between the first magnetic structure and the second magnetic structure. Since the size of the air gap usually affects the temperature at the edge of the air gap, when the temperature is high, it is easy to cause uneven magnetic field distribution near the air gap, such as inductor saturation, which in turn affects the normal use of the inductor. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an improved inductor.

[0004] The technical solution adopted by the utility model to solve the technical problem is: construct an inductor, including:

[0005] The winding frame comprises a first opening and a second opening arranged opposite to the first opening; the first opening and the second opening are arranged to be connected;

[0006] A wire group, wound on the winding frame;

[0007] A first magnetic structure, disposed at the first opening;

[0008] a second magnetic structure, disposed at the second opening, disposed opposite to the first magnetic structure with an air gap formed therebetween, the air gap being located in the winding frame;

[0009] at least one magnetic sheet disposed in the air gap;

[0010] At least one isolation member is disposed between the magnetic sheet and the first magnetic structure and / or between the magnetic sheet and the second magnetic structure, and is coaxially disposed with the magnetic sheet.

[0011] In some embodiments, there are at least two magnetic sheets, the two magnetic sheets are coaxially arranged, and the isolation member is provided between the two magnetic sheets.

[0012] In some embodiments, the spacer includes a first spacer, and the first spacer is disposed between the two magnetic sheets and / or between the magnetic sheet and the second magnetic structure.

[0013] In some embodiments, the isolation member includes a second isolation member, the second isolation member is disposed between the magnetic sheet and the first magnetic structure, and / or the second isolation member is disposed between the magnetic sheet and the second magnetic structure.

[0014] In some embodiments, the cross-sectional shape and size of the magnetic sheet are adapted to the cross-sectional shape and size of the air gap.

[0015] In some embodiments, the cross-sectional shape and size of the spacer are adapted to the cross-sectional shape and size of the air gap.

[0016] In some embodiments, the first magnetic structure includes a first magnetic column at least partially mounted into the winding frame from the first opening; the magnetic sheet is coaxially arranged with the first magnetic column;

[0017] And / or, the second magnetic structure includes a second magnetic column at least partially installed in the winding frame from the second opening; the magnetic sheet is coaxially arranged with the second magnetic column.

[0018] In some embodiments, the first magnetic structure further comprises a first sleeve portion sleeved on the outer periphery of the winding frame portion; the first sleeve portion comprises a first end wall and two first side walls disposed on two opposite sides of the first end wall; the first end wall is located at the first opening;

[0019] And / or, the second magnetic structure further comprises a second end wall sleeved on the outer periphery of the winding frame portion and two second side walls arranged on two opposite sides of the second end wall;

[0020] The second end wall is disposed at the second opening.

[0021] In some embodiments, the winding frame includes a winding post, and the first opening and the second opening are respectively disposed at two ends of the winding post;

[0022] The winding frame further comprises two first extending protrusions arranged at two opposite sides of the winding post; the two first extending protrusions are located at the first opening and a first limiting groove for the first magnetic structure to be limitedly installed is formed therebetween;

[0023] The winding frame also includes two second extending protrusions arranged on two opposite sides of the winding post; the two second extending protrusions are located in the second opening and a second limiting groove for the second magnetic structure to be limitedly installed is formed therebetween.

[0024] In some embodiments, a lead groove is provided on the second extending protrusion.

[0025] The implementation of the inductor of the utility model has the following beneficial effects: the inductor divides the air gap into segments by arranging at least one magnetic sheet and at least one isolating member in the air gap, and arranging the isolating member coaxially with the magnetic sheet and between the magnetic sheet and the first magnetic structure and / or between the magnetic sheet and the second magnetic structure, thereby achieving uniform distribution of the magnetic field, preventing the inductor from experiencing inductance saturation, keeping the inductor at a relatively low temperature, improving the performance of the inductor, and saving material costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0027] Figure 1 is a schematic diagram of the structure of an inductor in some embodiments of the utility model;

[0028] Figure 2 yes Figure 1 a cross-sectional view of the inductor shown;

[0029] Figure 3 yes Figure 1 A schematic diagram of the structural breakdown of the inductor shown;

[0030] Figure 4 yes Figure 3 A schematic diagram of the winding frame structure of the inductor shown;

[0031] Figure 5 yes Figure 4 Cross-sectional view of the bobbin of the inductor shown. DETAILED DESCRIPTION

[0032] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "upper", "lateral", "inner", "outer", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific direction. They are only for the convenience of describing the present technical solution, and do not indicate that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0033] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installation", "connection", "setting" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0034] Figure 1 Some preferred embodiments of the inductor are shown. The inductor has the advantages of low temperature, good performance and low manufacturing cost.

[0035] like Figures 1 to 3 As shown, in some embodiments, the inductor may include a bobbin 10, a wire group 20, a first magnetic structure 30, a second magnetic structure 40, a magnetic sheet 50, and an isolating member 60. In some embodiments, the bobbin 10 may be used for winding the wire group 20, and may be used for installing the first magnetic structure 30 and the second magnetic structure 40. The wire group 20 is wound on the bobbin 10, and in some embodiments, the wire group 20 may be an enameled wire. The first magnetic structure 30 and the second magnetic structure 40 are both mounted on the bobbin 10 and are arranged opposite to each other. The magnetic sheet 50 is arranged in the bobbin 40, and is located between the first magnetic structure 30 and the second magnetic structure 40. The isolating member 60 is arranged in the bobbin 40, and is coaxially arranged with the magnetic sheet 50, and is arranged between the magnetic sheet 50 and the first magnetic structure 30, and between the magnetic sheet 50 and the second magnetic structure 40. In some other embodiments, it may be arranged only between the magnetic sheet 50 and the first magnetic structure 30, or only between the magnetic sheet 50 and the second magnetic structure 40.

[0036] like Figure 4 and Figure 5As shown, in some embodiments, the winding frame 10 may include a winding post 11, and the winding post 11 is a through structure at both ends. The winding frame 10 includes a first opening 111 and a second opening 112. Specifically, the first opening 111 and the second opening 112 are opened at both ends of the winding post 11, are arranged opposite to each other, and are mutually connected. An air gap 110 may be provided on the inner side of the winding post 11 and between the first opening 111 and the second opening 112. In some embodiments, the cross section of the winding post 11 may be roughly circular.

[0037] In some embodiments, the winding frame 10 may further include a first extension protrusion 12, and there may be two first extension protrusions 12, which are disposed on two opposite sides of the winding post 11 and may be located on the end surface where the first opening 111 is located, and may extend radially outward from the first opening 111 along the winding post 11. The interval between the two first extension protrusions 12 may form a first limiting groove 13 for the first magnetic structure 30 to be limitedly installed.

[0038] In some embodiments, the winding frame 10 further includes a second extension protrusion 14, and the second extension protrusion 14 may be two, and the two second extension protrusions 14 are arranged on two opposite sides of the winding post 11, and may be located at the second opening 112, and may extend radially outward from the edge of the second opening 112 along the winding post 11. The interval between the two second extension protrusions 14 may form a second limiting groove 15 for the second magnetic structure 40 to be limitedly installed. In some embodiments, a plurality of lead grooves 141 may be provided on the second extension protrusion 14, and the plurality of lead grooves 141 may be provided for the pins to be led out.

[0039] For example Figure 2 and Figure 3As shown, in some embodiments, the first magnetic structure 30 may include a first magnetic column 31 and a first sleeve portion 32, and the first magnetic column 31 may be installed in the winding frame 10 at least partially from the first opening 111. The first magnetic column 31 may be coaxially arranged with the winding column 11. In some embodiments, the first magnetic column 31 may be cylindrical. The first sleeve portion 32 is arranged at one end of the first magnetic column 31 and may be an integral structure with the first magnetic column 31. In some embodiments, when the first magnetic column 31 is installed into the winding frame 10 from the first opening 111, the first sleeve portion 32 may be sleeved on a portion of the outer circumference of the winding frame 10. Specifically, the first sleeve portion 32 may include a first end wall 321 and two first side walls 322, and the cross-section of the first end wall 321 may be substantially rectangular, and its length may be greater than the outer diameter of the winding column 11. The two first side walls 322 are arranged on two opposite sides of the first end wall 321 and are arranged perpendicular to the first end wall 321. When the first magnetic structure 32 is assembled with the winding frame 10 , the first end wall 321 may be located at the first opening, and the first side wall 322 may be clamped in the first limiting groove 13 to be limited by the first limiting groove 13 . The first side wall 322 may extend toward the second magnetic structure 40 .

[0040] In some embodiments, the second magnetic structure 40 may include a second magnetic column 41 and a second sleeve portion 42, and the second magnetic column 41 may be installed in the winding frame 10 at least partially from the second opening 112. The second magnetic column 41 may be coaxially arranged with the winding column 11. In some embodiments, the second magnetic column 41 may be cylindrical. The second sleeve portion 42 is arranged at one end of the second magnetic column 41 and may be an integral structure with the second magnetic column 41. In some embodiments, when the second magnetic column 41 is loaded into the winding frame 10 from the second opening 112, the second sleeve portion 42 may be sleeved on a portion of the outer circumference of the winding frame 10. Specifically, the second sleeve portion 42 may include a second end wall 421 and two second side walls 422, and the cross-section of the second end wall 421 may be substantially rectangular, and its length may be greater than the outer diameter of the winding column 11. The two second side walls 422 are arranged on two opposite sides of the second end wall 421 and are arranged perpendicular to the second end wall 421. When the second magnetic structure 42 is assembled with the winding frame 10, the second end wall 421 can be located at the second opening, and the second side wall 422 can be clamped in the second limiting groove 15 and limited by the second limiting groove 15. The second side wall 422 can extend toward the first side wall 322 and connect with the first side wall 322.

[0041] An air gap 110 may be formed between the first magnetic structure 30 and the second magnetic structure 40 . Specifically, the air gap 110 may be formed between the first magnetic column 31 and the second magnetic column 41 .

[0042] In some embodiments, there may be two magnetic sheets 50, and the two magnetic sheets 50 may be coaxially arranged in the air gap 110. It is understandable that in some other embodiments, the magnetic sheets 50 are not limited to two, and may be one or more than two. The two magnetic sheets 50 may be separated by providing an isolating member 60. In some embodiments, the cross-sectional shape and size of the magnetic sheet 50 may be adapted to the cross-sectional shape and size of the air gap. Specifically, the magnetic sheet 50 may be roughly circular, and its outer diameter may be adapted to the inner diameter of the winding pole 11. By providing the magnetic sheet 50 in the air gap 110, the air gap 110 may be segmented, which is conducive to achieving uniform distribution of the magnetic field, preventing the inductor from saturating, thereby avoiding excessive temperature of the inductor and improving the performance of the inductor.

[0043] In some embodiments, there may be at least two isolators 60 , and specifically, there may be three isolators 60 . The three isolators 60 may include two first isolators 60 a and one second isolator 60 b .

[0044] The first isolating member 60a may be in the form of a flat plate, which may be a PCB board. Of course, it is understandable that in some other embodiments, the first isolating member 60a may not be limited to being in the form of a flat plate, but may also be in the form of a sheet or a column. One of the first isolating members 60a may be disposed between two magnetic sheets 50, and another first isolating member 60a may be disposed between the magnetic sheet 50 and the second magnetic structure 40, specifically between the magnetic sheet 50 and the second magnetic column 41. In some other embodiments, the first isolating member 60a may be disposed only between the magnetic sheet 50 and the second magnetic structure 40 or only between two magnetic sheets 50.

[0045] The second isolation member 60b may be a columnar structure, which may be a colloidal material. In some embodiments, the second isolation member 60b may be disposed between the magnetic sheet 50 and the first magnetic structure 30, specifically, between the magnetic sheet 50 and the first magnetic column 31. In some other embodiments, the isolation member 60b may also be disposed between the magnetic sheet 50 and the second magnetic structure 40.

[0046] In some embodiments, the cross-sectional shape and size of the isolating member 60 may be compatible with the cross-sectional shape and size of the air gap. Specifically, the cross-section of each isolating member 60 may be substantially circular, and its outer diameter may be compatible with the radial size of the air gap.

[0047] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should belong to the scope covered by the claims of the utility model.

Claims

1. An inductor, characterized in that: include: The winding frame (10) comprises a first opening (111) and a second opening (112) arranged opposite to the first opening (111); the first opening (111) and the second opening (112) are arranged to be connected; A wire group (20) is wound on the winding frame (10); A first magnetic structure (30) disposed at the first opening (111); a second magnetic structure (40), arranged in the second opening (112), and arranged opposite to the first magnetic structure (30) with an air gap (110) formed therebetween, wherein the air gap (110) is located in the winding frame (10); At least one magnetic sheet (50) is disposed in the air gap (110); At least one isolation member (60) is disposed between the magnetic sheet (50) and the first magnetic structure (30) and / or between the magnetic sheet (50) and the second magnetic structure (40), and is coaxially disposed with the magnetic sheet (50).

2. The inductor according to claim 1, characterized in that There are at least two magnetic sheets (50), the two magnetic sheets (50) are coaxially arranged, and the two are separated by the isolation member (60).

3. The inductor according to claim 2, characterized in that The isolation member (60) comprises a first isolation member (60), and the first isolation member (60) is arranged between the two magnetic sheets (50) and / or between the magnetic sheet (50) and the second magnetic structure (40).

4. The inductor according to claim 1, wherein: The isolation member (60) includes a second isolation member (60), wherein the second isolation member (60) is disposed between the magnetic sheet (50) and the first magnetic structure (30), and / or the second isolation member (60) is disposed between the magnetic sheet (50) and the second magnetic structure (40).

5. The inductor according to claim 1, wherein: The cross-sectional shape and size of the magnetic sheet (50) are adapted to the cross-sectional shape and size of the air gap (110).

6. The inductor according to claim 1, characterized in that The cross-sectional shape and size of the isolating element (60) are adapted to the cross-sectional shape and size of the air gap (110).

7. The inductor according to claim 1, characterized in that The first magnetic structure (30) comprises a first magnetic column (31) at least partially installed in the winding frame (10) from the first opening (111); the magnetic sheet (50) is coaxially arranged with the first magnetic column (31); And / or, the second magnetic structure (40) comprises a second magnetic column (41) at least partially installed in the winding frame (10) from the second opening (112); and the magnetic sheet (50) is coaxially arranged with the second magnetic column (41).

8. The inductor according to claim 1, wherein: The first magnetic structure (30) further comprises a first sleeve portion (32) sleeved on a portion of the outer periphery of the winding frame (10); the first sleeve portion (32) comprises a first end wall (321) and two first side walls (322) arranged on two opposite sides of the first end wall (321); the first end wall (321) is located at the first opening (111); And / or, the second magnetic structure (40) further comprises a second end wall (421) sleeved on a portion of the outer periphery of the winding frame (10) and two second side walls (422) arranged on two opposite sides of the second end wall (421); The second end wall (421) is disposed at the second opening (112).

9. The inductor according to claim 1, wherein: The winding frame (10) comprises a winding post (11), and the first opening (111) and the second opening (112) are respectively arranged at two ends of the winding post (11); The winding frame (10) further comprises two first extending protrusions (12) arranged on two opposite sides of the winding pole (11); the two first extending protrusions (12) are located at the first opening (111) and a first limiting groove (13) is formed between the two for limiting installation of the first magnetic structure (30); The winding frame (10) further comprises two second extending protrusions (14) arranged on two opposite sides of the winding pole (11); the two second extending protrusions (14) are located at the second opening (112) and a second limiting groove (15) is formed therebetween for the second magnetic structure (40) to be limitedly installed.

10. The inductor according to claim 9, characterized in that The second extending protrusion (14) is provided with a lead groove (141).

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