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Ferrite core

A ferrite core, integrated technology, applied in the direction of magnetic core/yoke, transformer/inductor core, inductor/transformer/magnet manufacturing, etc., can solve the problem of inconvenient shape, coil asymmetry, unfavorable manufacturing, etc. question

Inactive Publication Date: 2012-08-22
苏州天铭磁业有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0007] The central column of the currently used ET-type magnetic core is approximately in the shape of a cuboid, which is very inconvenient when winding it.
Moreover, when winding the wire at the corner of the center column, when the winding force changes, it is very easy to cause the coil to be asymmetrical, which will cause heat generation.
[0008] In order to overcome the above problems, there are currently some solutions, such as enlarging the four corners of the central column, so that the central column becomes "full" and "round", similar to a cylinder, although this method can facilitate winding, but Such a structure is extremely inconvenient for product production and is not conducive to large-scale production.

Method used

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Embodiment Construction

[0018] Such as figure 1 As shown, the whole of the ferrite core 1 of the present invention is a "day"-shaped frame structure, including a central column 2 in the middle.

[0019] Depend on figure 1 ,in particular figure 2 It can be clearly seen that the central column 2 changes the traditional cuboid shape, that is, the two side surfaces 3, the front 4, and the rear 4' of the traditional central column 2 are all planar, and the two side surfaces 3 of the central column 2 of the present invention It is planar, and the front 4 and rear 4' of the central column are arcuate. In this way, the section of the central column 2 is similar to a playground shape, and the smooth arc surface facilitates the winding operation during winding, and the coil will not be asymmetrical due to the change of the winding force.

[0020] In addition, the shape of the central column 2 makes the section of the central column 2 larger than that of common ET-type products, which can increase the induc...

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Abstract

The invention discloses a ferrite core (1), the whole ferrite core is a frame structure with a central cylinder (2) arranged in the middle, the surfaces of two sides of the central cylinder (2) are plane-shaped, a front face (4) and a rear face (4') of the central cylinder are curved, the height of the curved face is smaller than or equal to half of the distance between two ends of the curved face, the cross section of the central cylinder (2) is similar to a playground shape, the smooth curved faces are convenient for winding during winding and coils are not asymmetrical due to changes of winding strength, in addition, the cross section of the central cylinder (2) is large, and therefore, inductance can be improved.

Description

technical field [0001] The invention relates to a ferrite core and belongs to the technical field of ferrite core manufacturing. Background technique [0002] The magnetic core refers to a sintered magnetic metal oxide composed of various iron oxide mixtures. For example, manganese-zinc ferrite and nickel-zinc ferrite are typical core body materials. [0003] Manganese-zinc ferrites are characterized by high magnetic permeability and high magnetic flux density, and have low loss characteristics at frequencies below 1MHz. [0004] Nickel-zinc ferrite has the characteristics of extremely high resistivity, low magnetic permeability of less than a few hundred, and low loss at frequencies higher than 1MHz. [0005] Ferrite cores are used in coils and transformers of various electronic equipment. It is a high-frequency magnetic material (the principle is the same as silicon steel sheets, but used in high-frequency environments), mainly for high-frequency transformers (like switc...

Claims

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Application Information

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IPC IPC(8): H01F3/00H01F27/24H01F41/02
Inventor 魏瑞明戴建中邹仲鹤陆静军
Owner 苏州天铭磁业有限公司
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