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Wire wound inductor and manufacturing method thereof

A technology of winding inductors and coils, which is applied in the manufacture of inductors/transformers/magnets, inductors with magnetic cores, transformer/inductor cores, etc., which can solve the problems of low magnetic permeability, high cost, and poor reliability. Achieve the effects of high effective magnetic permeability, high rated current and excellent reliability

Active Publication Date: 2012-12-26
贵阳顺络迅达电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to make up for the shortcomings of traditional closed magnetic circuit winding inductors, which are complex in process, high in cost, unable to realize automation, low in permeability of traditional open magnetic circuit, poor in EMI effect and poor in reliability, and propose a winding Inductor and its manufacturing method

Method used

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  • Wire wound inductor and manufacturing method thereof
  • Wire wound inductor and manufacturing method thereof
  • Wire wound inductor and manufacturing method thereof

Examples

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Embodiment 1

[0031] In this embodiment, the wire-wound inductor includes an I-shaped magnetic core, external electrodes respectively formed at both ends of the I-shaped magnetic core, and wound on the central column of the I-shaped magnetic core, and the two ends are respectively connected to the The enameled coil to which the external electrodes are electrically connected also includes a cover plate made of the same material as the I-shaped magnetic core, and the cover plate is fixed on the top of the I-shaped magnetic core.

[0032] The manufacturing method of wirewound inductor in the present embodiment, comprises the following steps:

[0033] 1) Forming external electrodes: forming external electrodes on both ends of the I-shaped magnetic core;

[0034] 2) Forming an enameled coil: winding the enameled wire on the center column of the I-shaped magnetic core, and connecting the two ends to the outer electrodes respectively;

[0035] 3) Fixing the cover plate: fixing the cover plate of ...

Embodiment 2

[0046] Such as Figure 6-7As shown, the difference between the wound inductor and the first embodiment is that the cover plate 7 is only pasted and fixed on the top surface of the central column 1b of the I-shaped magnetic core, and the area of ​​the cover plate 7 is equal to the area of ​​the top surface of the central column 1b.

[0047] The difference between the manufacturing method of the wire-wound inductor and the first embodiment is that the cover plate made of ferrite material is pasted on the center column of the I-shaped magnetic core with UV glue or epoxy resin glue during the coating and cover plate process. On the top surface of 1b, the area of ​​the cover plate 7 is equal to the area of ​​the top surface of the central pillar 1b.

[0048] The wire-wound ferrite inductor of the present invention has the advantages of high precision, good consistency and unbreakable products, and is suitable for LED drive circuits, DC-DC circuits, etc., such as LED lighting, LCD T...

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Abstract

The invention discloses a wire wound inductor. The inductor comprises an I-shaped magnetic core, outer electrodes respectively formed on the bottom surfaces at the two ends of the I-shaped magnetic core and an enamelled coil wound on a central column of the I-shaped magnetic core, wherein the two ends of the enamelled coil are respectively connected with the outer electrodes electrically. The inductor is characterized by also comprising a cover plate; the cover plate and the I-shaped magnetic core are made of the same materials; and the cover plate is fixed at the top of the I-shaped magnetic core. The invention also discloses a manufacturing method of the wire wound inductor. The method comprises the following steps: 1) forming the outer electrodes: forming the outer electrodes at the two ends of the I-shaped magnetic core respectively; 2) forming the enamelled coil: winding the enamelled coil on the central column of the I-shaped magnetic core and ensuring the two ends of the enamelled coil to be respectively connected with the outer electrodes; and 3) fixing the cover plate: fixing the cover plate made of the same materials as the I-shaped magnetic core at the top of the I-shaped magnetic core. The inductor has the advantages of the closed magnetic circuit inductors and simultaneously has the advantages of simple process, low cost, capability of realizing automatic production and the like.

Description

technical field [0001] The invention relates to electronic components, in particular to a wire-wound ferroinductor and a manufacturing method thereof. Background technique [0002] At present, power supply products are developing in the direction of high frequency, small size, light weight and high power, which requires reducing the volume of each internal component as much as possible, and has high requirements for the structure of the product. Inductors must adapt to the development needs of miniaturization of power supply products. At present, there are generally two types of wire-wound inductors, one is to add magnetic glue to close the magnetic circuit wound inductor; the other is to apply ultraviolet light curing (Ultraviolet Rays, abbreviated as UV) glue to open the magnetic circuit wound inductor [0003] Such as figure 1 As shown, it is a front view of a wire-wound inductance with magnetic glue to close the magnetic circuit. The enameled coil 3 on the center colu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F17/04H01F27/24H01F41/00
Inventor 黄敬新于四梅
Owner 贵阳顺络迅达电子有限公司
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