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Corner defect proof EE type magnetic core

A technology of magnetic cores and missing corners, which is applied in transformer/inductor cores, inductance/transformer/magnet manufacturing, electrical components, etc. It can solve problems affecting product quality, lower pass rate, change performance and parameters, etc., and achieve savings R&D costs and the effect of saving material input

Inactive Publication Date: 2012-03-14
WUXI SPINEL MAGNETICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] First: Before the blank is sintered, the mechanical strength is very poor. During the process of handling, sorting and discharging the blank, it is easy to produce a missing corner;
[0004] Second: After the blank is sintered in the kiln, it becomes a sintered semi-finished product. During the grinding process of the sintered semi-finished product, the magnetic cores collide and squeeze each other, which easily causes secondary missing corners, resulting in a lower pass rate and affecting product quality.
[0005] In view of the above problems, from the perspective of changing the material composition, changing its composition may increase the hardness of the EE core, but at the same time it also changes its performance and parameters more or less, which is not worth the candle for the application.

Method used

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  • Corner defect proof EE type magnetic core
  • Corner defect proof EE type magnetic core
  • Corner defect proof EE type magnetic core

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] like figure 1 As shown, there are two windows 2 on the magnet 1 of the EE16 type magnetic core, the top surface of the magnet 1 is provided with a concave table 5, and the top surface of the magnet 1 is provided with a slope 3 at the corner of the longer side, and the slope 3 is on the window surface. The projection length on the surface is 2.77mm, that is, the longitudinal vertical height of the slope surface 3 is 2.77mm, and the angle C between the slope surface 3 and the adjacent magnet window surface is 5°; The vertical edges and lower edges of the platform 5 are designed as concave edges 4, the concave angle in the concave edge 4 is 135°, and the short side length of the concave angle parallel to the bottom surface is 0.24mm.

[0022] like figure 2 as shown, figure 2 for figure 1 Along the sectional view of AA, in the upper part of the sectional view, the opening surface of the window 2 forms an included angle C of 5° with the slope 3; The two long edges of t...

Embodiment 2

[0026] Since the EE-type magnetic core has the same shape and structure except for the different specifications, this design is also applicable to the EE71-type magnetic core.

[0027] There are two windows 2 on the magnet 1 of the EE71 type magnetic core. The top surface of the magnet 1 is provided with a concave platform 5. The long side corners of the top surface of the magnet 1 are provided with a slope surface 3. The slope surface 3 is connected to the adjacent magnet window. The degree of the angle C between the surfaces is 6°; on the two windows 2 , the edges perpendicular to the concave table 5 and the lower edge are designed as concave edges 4 . The two long edges of the bottom surface of the magnet 1 of the EE71 type magnetic core are concave edges 4 , and at the same time, on the magnet 1 , the edges perpendicular to the concave platform 5 are concave edges 4 .

Embodiment 3

[0029] Different from the above embodiments, for the EE19 type magnetic core, in this embodiment, the included angle C is 5°.

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PUM

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Abstract

The invention discloses a corner defect proof EE type magnetic core consisting of a magnet and two windows, wherein the top of the magnet is provided with a concave stage, the longer edge of the top of the magnet is provided with a slope, the slope and the window adjacent to the slope form an included angle of 4-6 degrees, the edge of the magnet, perpendicular to the concave stage, is a concave edge, the longer edge of the bottom of the magnet is a concave edge and the edges at the lower ends of the two windows are also concave edges. The corner defect proof EE type magnetic core provided by the invention has the advantages of avoiding the generation of corner defects and saving materials.

Description

technical field [0001] The invention relates to a magnetic material, in particular to an EE type magnetic core with anti-cutting angle. Background technique [0002] Manganese-zinc soft magnetic ferrite is a commonly used material. Among the many manganese-zinc soft magnetic ferrites, EE-type magnetic core is one of the most commonly used types. Different types of EE-type magnetic cores have different specifications and sizes. and construction are the same. The EE type magnetic core has played an important role in the industry, but this kind of magnetic core is characterized by being hard and brittle, and it is very easy to be damaged by external force, causing it to lose its value directly. In mass production, a large number of EE-type cores are often arranged and stacked. Because the edges and corners of the EE-type cores are sharp and sharp, a large number of adjacent EE-type cores are squeezed and collided with each other, and the corners are easily knocked off. , The ...

Claims

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Application Information

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IPC IPC(8): H01F27/26H01F27/24H01F41/02
Inventor 刘洪建
Owner WUXI SPINEL MAGNETICS