CN113380507A - Four-electrode integrally-formed inductor and preparation method thereof - Google Patents
Four-electrode integrally-formed inductor and preparation method thereof Download PDFInfo
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- CN113380507A CN113380507A CN202110559296.0A CN202110559296A CN113380507A CN 113380507 A CN113380507 A CN 113380507A CN 202110559296 A CN202110559296 A CN 202110559296A CN 113380507 A CN113380507 A CN 113380507A
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- 238000002360 preparation method Methods 0.000 title abstract description 6
- 238000004804 winding Methods 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 21
- 239000006247 magnetic powder Substances 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 16
- 238000000465 moulding Methods 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 3
- 239000010410 layer Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000009713 electroplating Methods 0.000 claims description 3
- 239000011241 protective layer Substances 0.000 claims description 3
- 239000011265 semifinished product Substances 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 6
- 241000276425 Xiphophorus maculatus Species 0.000 description 4
- 239000000843 powder Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/266—Fastening or mounting the core on casing or support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/263—Fastening parts of the core together
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/06—Coil winding
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Abstract
The invention provides a four-electrode integrally-formed inductor and a preparation method thereof, wherein the four-electrode integrally-formed inductor comprises the following steps: the magnetic core is formed by cold pressing, the magnetic core comprises a blade pendulum, a first magnetic column and a second magnetic column, the edge of the blade pendulum is provided with at least one notch, and the notch penetrates through the upper surface and the lower surface of the blade pendulum; simultaneously winding coils on the first magnetic column and the second magnetic column, winding the first coil on the first magnetic column, and winding the second coil on the second magnetic column; hot-press molding: and adding magnetic powder into the forming die cavity, enabling the magnetic powder to fall through the notch to coat the second coil and the second magnetic column, filling the magnetic powder into the forming die cavity and performing hot press forming to form a body, and sealing the magnetic core in the body. The magnetic core is formed by cold press molding at one time to form an upper magnetic column and a lower magnetic column, so that two groups of coils are wound simultaneously, the complexity of process manufacturing is reduced, the production efficiency is improved, and the production cost is reduced.
Description
Technical Field
The invention relates to the technical field of inductors, in particular to a four-electrode integrally formed inductor and a preparation method thereof.
Background
The conventional four-electrode integrated inductor needs two cold pressing and two winding processes, for example, a manufacturing process of an integrated four-electrode inductor disclosed in the patent application number CN202010817847.4, the four-electrode integrated inductor firstly forms a first magnetic core by cold pressing for the first time, the first magnetic core comprises a first platy magnetic core and a first columnar magnetic core, the first columnar magnetic core is arranged on a first surface of the first platy magnetic core, and the first columnar magnetic core is wound on the first columnar magnetic core; and then, powder is applied to the first surface of the first platy magnetic core and cold pressing is carried out to form a second magnetic core, the second magnetic core comprises a second platy magnetic core and a second columnar magnetic core, and the powder is continuously applied to the second columnar magnetic core after the wire is wound on the second columnar magnetic core and the cold pressing is carried out to form a semi-finished inductor. Through twice cold pressing and twice winding, the process is complicated, the cost is higher, and the efficiency is low.
Disclosure of Invention
Based on the problems in the prior art, the invention provides a four-electrode integrally-formed inductor and a preparation method thereof, and aims to solve the technical problems of low manufacturing efficiency, high cost, complex process and the like of the four-electrode integrally-formed inductor in the prior art.
A four-electrode integrated inductor comprises a magnetic core and a body, wherein the magnetic core is sealed in the body;
the magnetic core comprises a leaf pendulum, a first magnetic column vertically connected to the upper surface of the leaf pendulum and a second magnetic column vertically connected to the lower surface of the leaf pendulum;
a first coil is wound on the first magnetic column, and a second coil is wound on the second magnetic column;
wherein the edge of the leaf pendulum is provided with at least one notch, and the notch penetrates through the upper surface and the lower surface of the leaf pendulum;
furthermore, at least 4 notches are formed, the leaf pendulum comprises a long edge and a wide edge, and each corner of the leaf pendulum is provided with one notch.
A method for preparing a four-electrode integrally-formed inductor is characterized in that the method for preparing the four-electrode integrally-formed inductor comprises the following steps:
step A1, forming a magnetic core in a cold press molding mode;
step A2, curing the magnetic core;
step A3, fixing the blade pendulum, simultaneously winding coils on the first magnetic pole and the second magnetic pole, winding a first coil on the first magnetic pole, and winding a second coil on the second magnetic pole;
a4, paving a layer of magnetic powder on the bottom in a forming die cavity in advance;
a step a5 of placing the magnetic core around which the first coil and the second coil are wound in the step A3 into the molding die, with the first pillar facing upward and the second pillar facing downward;
step A6, adding magnetic powder into the forming die cavity, wherein the magnetic powder falls through the gap to coat the second coil and the second magnetic column, filling the forming die cavity with the magnetic powder and performing hot press forming to form a body, and the magnetic core is sealed in the body;
and step A7, sintering and curing the hot-press molded semi-finished product.
Further, the following steps are included after the step a 7:
step A8, coating an insulating protective layer on the outer surface of the body;
step A9, exposing the pins of the two outgoing lines of the first coil and the pins of the two outgoing lines of the second coil to the outer surface of the body in a laser mode;
and step A10, electroplating on the pins to form electrodes.
Further, in the step a3, both the first coil and the second coil are wound in an α winding manner.
Further, in the step a3, two lead-out lines of the first coil are led out from the same side of the leaf pendulum;
two outgoing lines of the second coil are led out from the same side of the leaf pendulum;
and the leading-out directions of the two leading-out wires of the first coil are opposite to the leading-out directions of the two leading-out wires of the second coil.
Further, in the step a3, two clamps are used to clamp the pendulum, a first flying fork is disposed at the first magnetic pole end, a second flying fork is disposed at the second magnetic pole end, the first flying fork and the second flying fork are disposed perpendicular to the pendulum, the first flying fork is used to wind a first coil on the first magnetic pole, the second flying fork is used to wind a second coil on the second magnetic pole, and the first flying fork and the second flying fork simultaneously perform coil winding clamps.
Further, the magnetic core is vertically placed, the first magnetic column is placed upwards, the second magnetic column is placed downwards, and the two clamps are horizontally placed to clamp the blade pendulum.
Further, the magnetic core is horizontally placed, the first magnetic column faces to the left, the second magnetic column faces to the right, and the two clamps are placed up and down to clamp the leaf pendulum.
Furthermore, the leaf pendulum includes long limit and broadside, in each corner of leaf pendulum has one the breach, one anchor clamps are cliied two adjacent edges the breach, another anchor clamps are cliied two other adjacent edges the breach.
The beneficial technical effects of the invention are as follows: the invention discloses a four-electrode integrally-formed inductor and a preparation method thereof.A magnetic core is subjected to one-time cold press molding through a die to form an upper magnetic column and a lower magnetic column, the upper magnetic column and the lower magnetic column are subjected to coil winding simultaneously, two groups of coils are wound simultaneously, cold pressing and winding twice are not required, the complexity of process manufacturing is reduced, the production efficiency is improved, and the production cost is reduced.
Drawings
Fig. 1 is a schematic diagram of a three-dimensional structure of a magnetic core of a four-electrode integrally-formed inductor according to the present invention;
FIG. 2 is a schematic diagram of a split structure of a longitudinal section of a magnetic core of a four-electrode integrally formed inductor according to the present invention;
fig. 3 is a schematic structural diagram of a horizontally placed clamp in the winding step of the method for manufacturing the four-electrode integrally-formed inductor according to the present invention;
fig. 4 is a schematic structural diagram of the jig vertically placed in the winding step of the method for manufacturing the four-electrode integrally-formed inductor according to the present invention;
fig. 5 is a schematic structural diagram of the jig vertically placed in the winding step of the method for manufacturing the four-electrode integrally-formed inductor according to the present invention;
FIG. 6 is a schematic structural diagram of a four-electrode integrally formed inductor according to the present invention;
fig. 7-8 are flow charts of steps of a method for manufacturing a four-electrode integrally formed inductor according to the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
Referring to fig. 1-2 and 5-6, the invention provides a four-electrode integrally formed inductor, which comprises a magnetic core and a body (6), wherein the magnetic core is sealed inside the body (6);
the magnetic core comprises a leaf pendulum (3), a first magnetic column (1) vertically connected to the upper surface of the leaf pendulum (3) and a second magnetic column (2) vertically connected to the lower surface of the leaf pendulum (3);
a first coil (11) is wound on the first magnetic column (1), and a second coil (21) is wound on the second magnetic column (2);
the edge of the leaf pendulum (3) is provided with at least one notch (4), and the notch (4) penetrates through the upper surface and the lower surface of the leaf pendulum (3).
Further, at least four gaps (4) are included;
the leaf pendulum (3) comprises a long edge and a wide edge, and each corner of the leaf pendulum (3) is provided with a notch (4).
Furthermore, two outgoing lines of the first coil (11) are led out from the same side of the leaf pendulum (3);
two outgoing lines of the second coil (21) are led out from the same side of the leaf pendulum (3);
and the direction of the two lead-out wires of the first coil (11) is opposite to the direction of the two lead-out wires of the second coil (21).
As a preferred embodiment of the invention, the leaf pendulum (3) comprises a long side and a wide side, two leading lines of the first coil (11) are led out from one long side of the leaf pendulum (3), and two leading lines of the second coil (21) are led out from the other long side of the leaf pendulum (3).
As another preferred embodiment of the invention, the leaf pendulum (3) comprises a long side and a wide side, two leading lines of the first coil (11) are led out from one wide side of the leaf pendulum (3), and two leading lines of the second coil (21) are led out from the other wide side of the leaf pendulum (3).
Specifically, the number of winding turns of the first coil (11) and the second coil (12) may be set according to a desired inductance value, respectively.
Furthermore, the leaf pendulum (3), the first magnetic column (1) and the second magnetic column (2) are integrally formed.
Furthermore, the pins of the two outgoing lines of the first coil (11) and the pins of the two outgoing lines of the second coil (21) are located on the same outer surface of the body (6).
In another preferred embodiment of the present invention, the two lead-out wires of the first coil (11) and the two lead-out wires of the second coil (21) are located on different outer surfaces of the body (6).
Furthermore, the cross section of the first magnetic column (1) and the cross section of the second magnetic column (2) are the same in shape and size.
Furthermore, the cross section of the first magnetic column (1) and the cross section of the second magnetic column (2) are both of a runway type, a round type or a square type.
Furthermore, the first magnetic column (1) is overlapped with the second magnetic column (2) in the extending direction perpendicular to the leaf pendulum (3).
Furthermore, the first coil (11) and the second coil (21) are both flat wire coils or circular coils.
Furthermore, the leaf pendulum (3) is of a symmetrical structure.
Furthermore, the notches (4) are uniformly distributed at the edge of the leaf pendulum (3).
Referring to fig. 1 to 8, the present invention provides a method for manufacturing a four-electrode integrally formed inductor, for manufacturing the four-electrode integrally formed inductor, including the following steps:
step A1, forming a magnetic core in a cold press molding mode, wherein the magnetic core comprises a leaf pendulum (3), a first magnetic column (1) vertically connected to the upper surface of the leaf pendulum (3) and a second magnetic column (2) vertically connected to the lower surface of the leaf pendulum (3), the edge of the leaf pendulum (3) is provided with at least one notch (4), and the notch (4) penetrates through the upper surface and the lower surface of the leaf pendulum (3);
step A2, curing the magnetic core;
step A3, fixing a blade pendulum (3), winding coils on a first magnetic column (1) and a second magnetic column (2) simultaneously, winding a first coil (11) on the first magnetic column (1), and winding a second coil (21) on the second magnetic column (2);
a4, paving a layer of magnetic powder on the bottom in a forming die cavity in advance;
step A5, placing the magnetic core wound with the first coil (11) and the second coil (21) in the step A3 into a forming die, wherein the first magnetic pillar (1) faces upwards, and the second magnetic pillar (2) faces downwards;
step A6, adding magnetic powder into the cavity of the forming die, enabling the magnetic powder to fall through the notch (4) to coat the second coil (21) and the second magnetic column (2), filling the cavity of the forming die with the magnetic powder and performing hot press forming to form a body (6), and sealing the magnetic core in the body (6);
and step A7, sintering and curing the hot-press molded semi-finished product.
Further, the following steps are included after step a 7:
a8, coating an insulating protective layer on the outer surface of the body (6);
step A9, exposing the pins of the two outgoing lines of the first coil (11) and the pins of the two outgoing lines of the second coil (21) to the outer surface of the body (6) in a laser mode;
step A10, electroplating is performed on the pins to form electrodes.
Specifically, the magnetic powder is placed into a magnetic core die to be subjected to one-time cold press molding to form the magnetic core, namely the leaf pendulum (3), the first magnetic column (1) and the second magnetic column (2) are subjected to one-time integral molding.
Specifically, the protective insulating layer is resin.
In the step A3, the blade pendulum (3) is clamped by two clamps (5), a first fly fork is arranged at the end of the first magnetic column (1), a second fly fork is arranged at the end of the second magnetic column (2), the first fly fork and the second fly fork are perpendicular to the blade pendulum (3), the first fly fork is used for winding a first coil on the first magnetic column (1), the second fly fork is used for winding a second coil on the second magnetic column (2), and the first fly fork and the second fly fork are used for winding coils at the same time.
Specifically, as a preferred embodiment of the present invention, referring to fig. 3, in step a3, a leaf pendulum (3) is first clamped by two clamps (5) to fix a magnetic core, the magnetic core is placed vertically, a first magnetic pole (1) is placed upward, a first fly fork is disposed at the end of the first magnetic pole (1), a second magnetic pole (2) is placed downward, a second fly fork is disposed at the end of the second magnetic pole (2), a first coil (11) is wound on the first magnetic pole (1) by the first fly fork, a second coil (21) is wound on the second magnetic pole (2) by the second fly fork, and the first fly fork and the second fly fork perform coil winding simultaneously. In the mode, two clamps (5) are horizontally arranged and respectively clamp the opposite left end and the right end of the leaf pendulum (3).
Specifically, as another preferred embodiment of the present invention, referring to fig. 4, in step a3, a leaf pendulum (3) is first clamped by two clamps (5) to fix a magnetic core, the magnetic core is placed in a lateral direction, a first magnetic pole (1) is placed to the right, a first fly fork is disposed at the end of the first magnetic pole (1), a second magnetic pole (2) is placed to the left, a second fly fork is disposed at the end of the second magnetic pole (2), a first coil (11) is wound on the first magnetic pole (1) by using the first fly fork, a second coil (21) is wound on the second magnetic pole (2) by using the second fly fork, and the first fly fork and the second fly fork simultaneously perform coil winding. In the mode, two clamps (5) are arranged up and down and respectively clamp the opposite upper end and the lower end of the leaf pendulum (3).
Further, in step a1, at least four notches (4) are formed; the leaf pendulum (3) comprises a long edge and a wide edge, and each corner of the leaf pendulum (3) is provided with a notch (4).
Specifically, as a preferred real-time mode of the invention, the leaf pendulum (3) comprises a long edge and a wide edge, notches (4) are arranged at four corners of the leaf pendulum (3), when a coil is wound, one clamp (5) clamps the notches (4) at two adjacent corners, and the other clamp (5) clamps the notches (4) at the other two adjacent corners. Thereby fixing the magnetic core to facilitate coil winding.
Specifically, the notches (4) are only arranged at four corners. Specifically, the notches (4) enable the leaf pendulum (3) to be in a cross shape at four corners.
Specifically, the notch (4) is in smooth transition.
Specifically, the notches (4) are identical in shape and size.
The notch (4) is mainly provided for allowing the magnetic powder to fall through the notch (4) in the step a6 hot press molding, so that the magnetic powder covers the second coil (21) and the second magnetic pillar (2).
Further, in step a3, the first coil (11) and the second coil (21) are wound in an α -winding manner.
Further, in the step A3, two outgoing lines of the first coil (11) are led out from the same side of the leaf pendulum (3);
two outgoing lines of the second coil (21) are led out from the same side of the leaf pendulum (3);
and the direction of the two lead-out wires of the first coil (11) is opposite to the direction of the two lead-out wires of the second coil (21).
As a preferred embodiment of the invention, the leaf pendulum (3) comprises a long side and a wide side, two leading lines of the first coil (11) are led out from one long side of the leaf pendulum (3), and two leading lines of the second coil (21) are led out from the other long side of the leaf pendulum (3).
As another preferred embodiment of the invention, the leaf pendulum (3) comprises a long side and a wide side, two leading lines of the first coil (11) are led out from one wide side of the leaf pendulum (3), and two leading lines of the second coil (21) are led out from the other wide side of the leaf pendulum (3).
Specifically, the number of winding turns of the first coil (11) and the second coil (12) may be set according to a desired inductance value, respectively.
Further, in step a1, the leaf pendulum (3), the first magnetic column (1) and the second magnetic column (2) are integrally formed.
Further, in step a6, the two lead-out wires of the first coil (11) and the two lead-out wires of the second coil (21) are both located on the same outer surface of the body (6).
In another preferred embodiment of the present invention, the two lead-out wires of the first coil (11) and the two lead-out wires of the second coil (21) are located on different outer surfaces of the body (6).
Further, in step a1, the cross section of the first magnetic pillar (1) and the cross section of the second magnetic pillar (2) are the same in shape and size.
Further, in step a1, the cross section of the first magnetic pillar (1) and the cross section of the second magnetic pillar (2) are both racetrack shaped, circular or square.
Further, in step a1, the first magnetic pillar (1) coincides with the second magnetic pillar (2) in a direction perpendicular to the extending direction of the leaf pendulum (3).
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. A four-electrode integrated inductor is characterized by comprising a magnetic core and a body, wherein the magnetic core is sealed in the body;
the magnetic core comprises a leaf pendulum, a first magnetic column vertically connected to the upper surface of the leaf pendulum and a second magnetic column vertically connected to the lower surface of the leaf pendulum;
a first coil is wound on the first magnetic column, and a second coil is wound on the second magnetic column;
wherein, the edge of the leaf pendulum is provided with at least one notch which penetrates through the upper surface and the lower surface of the leaf pendulum.
2. The inductor as claimed in claim 1, wherein at least 4 of the notches are formed, the pendulum includes a long side and a wide side, and one notch is formed at each corner of the pendulum.
3. A method for manufacturing a four-electrode integrally formed inductor, which is characterized in that the four-electrode integrally formed inductor as claimed in any one of claims 1-2 is manufactured, and the method comprises the following steps:
step A1, forming a magnetic core in a cold press molding mode;
step A2, curing the magnetic core;
step A3, fixing the blade pendulum, simultaneously winding coils on the first magnetic pole and the second magnetic pole, winding a first coil on the first magnetic pole, and winding a second coil on the second magnetic pole;
a4, paving a layer of magnetic powder on the bottom in a forming die cavity in advance;
a step a5 of placing the magnetic core around which the first coil and the second coil are wound in the step A3 into the molding die, with the first pillar facing upward and the second pillar facing downward;
step A6, adding magnetic powder into the forming die cavity by heat, enabling the magnetic powder to fall through the notch to coat the second coil and the second magnetic column, filling the forming die cavity with the magnetic powder and performing hot press forming to form the body, and sealing the magnetic core in the body;
and step A7, sintering and curing the hot-press molded semi-finished product.
4. The method for manufacturing a four-electrode integrated inductor according to claim 3, further comprising the following steps after the step A7:
step A8, coating an insulating protective layer on the outer surface of the body;
step A9, exposing the pins of the two outgoing lines of the first coil and the pins of the two outgoing lines of the second coil to the outer surface of the body in a laser mode;
and step A10, electroplating on the pins to form electrodes.
5. The method as claimed in claim 3, wherein in step a3, the first coil and the second coil are wound by α -winding.
6. The method according to claim 3, wherein in step A3, two lead-out wires of the first coil are led out from the same side of the leaf pendulum;
two outgoing lines of the second coil are led out from the same side of the leaf pendulum;
and the leading-out directions of the two leading-out wires of the first coil are opposite to the leading-out directions of the two leading-out wires of the second coil.
7. The method according to claim 3, wherein in step A3, two jigs are used to clamp the pendulum, a first fly fork is disposed at the first magnetic pole end, a second fly fork is disposed at the second magnetic pole end, the first fly fork and the second fly fork are disposed perpendicular to the pendulum, the first fly fork is used to wind the first magnetic pole with a first coil, the second fly fork is used to wind the second magnetic pole with a second coil, and the first fly fork and the second fly fork are used to wind the coil at the same time.
8. The method according to claim 7, wherein the magnetic core is vertically disposed, the first magnetic pillar is disposed upward, the second magnetic pillar is disposed downward, and the two clamps are horizontally disposed to clamp the leaf pendulum.
9. The method of claim 7, wherein said magnetic core is horizontally disposed, said first pole faces left, said second pole faces right, and two of said holders are disposed above and below to hold said leaf pendulum.
10. The method of claim 7, wherein the pendulum includes a long side and a wide side, each corner of the pendulum has one notch, one of the clips clamps the notches at two adjacent corners, and the other clamp clamps the notches at the other two adjacent corners.
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| CN202110559296.0A CN113380507B (en) | 2021-05-21 | 2021-05-21 | Four-electrode integrally-formed inductor and preparation method thereof |
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| CN202110559296.0A CN113380507B (en) | 2021-05-21 | 2021-05-21 | Four-electrode integrally-formed inductor and preparation method thereof |
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| CN113380507B CN113380507B (en) | 2022-06-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114068152A (en) * | 2021-12-14 | 2022-02-18 | 苏州邦鼎新材料有限公司 | High-performance high-quality integrated inductance element structure and manufacturing method thereof |
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|---|---|---|---|---|
| JP2002124427A (en) * | 2001-08-27 | 2002-04-26 | Taiyo Yuden Co Ltd | Method for manufacturing chip inductor |
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| CN113380507B (en) | 2022-06-10 |
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