CN203456234U - Magnetic core - Google Patents

Magnetic core Download PDF

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Publication number
CN203456234U
CN203456234U CN201320452413.4U CN201320452413U CN203456234U CN 203456234 U CN203456234 U CN 203456234U CN 201320452413 U CN201320452413 U CN 201320452413U CN 203456234 U CN203456234 U CN 203456234U
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mentioned
limit
magnetic core
base plate
length
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CN201320452413.4U
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Chinese (zh)
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徐安瑞
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Hosonic Electronic Magnetic Industry (kunshan) Co Ltd
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Hosonic Electronic Magnetic Industry (kunshan) Co Ltd
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Abstract

The utility model discloses a magnetic core which comprises a strip-shaped magnetic core bottom board. The magnetic core is characterized in that a middle post and two side legs are integrally formed on the magnetic core bottom board; each side leg is an upright with a polygonal bottom face and each bottom face is a face formed by a first side, a second side, a third side, a fourth side and a fifth side, wherein the first side, the second side, the third side, the fourth side and the fifth side are connected end to end; the middle post is located between the two side legs and is an upright with a kidney-shaped bottom face. The magnetic core has the advantages that the effective volume of the product is increased through the increase of the size of the middle post and the thickness of each side leg so that the anti-saturation capacity of the product can be increased. In addition, due to the cambered surface design of the side legs, the magnetic core is convenient to assemble, the number of winding turns is increased by 5% to 10%, the number of vortex inductors is further reduced under the condition of the same inductance in a circuit, and the purpose of cost reduction is achieved.

Description

A kind of magnetic core
Technical field
The utility model relates to a kind of magnetic core, in particular to a kind of EPC14 magnetic core of large-size.
Background technology
Magnetic core refers to a kind of sintering magnetic metal oxide by various iron oxide compositions of mixtures.For example, manganese-zinc ferrite and nickel-Zn ferrite are typical magnetic core array materials.
EPC type magnetic core is a kind of a kind of magnetic core being widely used in the products such as transformer, electricity-saving lamp, the distinguishing feature that volume is little, inductance height is this kind of magnetic core.Traditional E PC13 type magnetic core in use, because of in column dimension and limit leg thickness relatively little, so product easily reaches capacity.
Utility model content
For solving the deficiencies in the prior art, the purpose of this utility model is to provide a kind of EPC type magnetic core that can have compared with high resistance saturability.
In order to realize above-mentioned target, the utility model adopts following technical scheme:
A magnetic core, comprises and it is characterized in that the magnetic core base plate of strip, and one-body molded have center pillar and two limit legs that are positioned on above-mentioned magnetic core base plate; Above-mentioned limit leg is to using polygon as the column of bottom surface, and above-mentioned bottom surface is for by article one limit, second limit, the 3rd limit, four edges and the 5th face that limit joins end to end and forms; Above-mentioned article one limit is parallel with four edges, and second limit is perpendicular to above-mentioned article one limit, and the 5th limit is parallel to above-mentioned second limit; The length on above-mentioned second limit is less than the length on above-mentioned the 5th limit, and the length of above-mentioned four edges is less than the length on above-mentioned article one limit, and above-mentioned the 3rd limit is the camber line to the bending of above-mentioned article one edge direction; Above-mentioned article one limit and second edge the edge distribution of above-mentioned magnetic core base plate; Above-mentioned center pillar is between above-mentioned two limit legs, and above-mentioned center pillar is that bottom surface is the column of kidney-shaped.
Further, above-mentioned limit leg be take the both sides of separated time above-mentioned magnetic core base plate as symmetry axis is symmetrically distributed in the long limit of above-mentioned magnetic core base plate, and above-mentioned center pillar is symmetrical about separated time in the long limit of above-mentioned magnetic core base plate.
Further, above-mentioned article one edge the broadside edge distribution of above-mentioned magnetic core base plate, and second edge the long limit edge distribution of above-mentioned magnetic core base plate, and the length on above-mentioned article one limit is greater than the width edge length of above-mentioned magnetic core base plate.
Further, two end points on above-mentioned the 3rd limit are positioned at the edge on two long limits of above-mentioned magnetic core base plate.
Further, between above-mentioned article one limit and second limit, between above-mentioned article one limit and the 5th limit, between above-mentioned four edges and the 5th limit, by fillet, connect.
Further, a straight flange of above-mentioned center pillar on above-mentioned magnetic core base plate along above-mentioned second limit along edge distribution, the distance of two straight flanges of above-mentioned center pillar is less than the width edge length of above-mentioned magnetic core base plate.
Further, above-mentioned center pillar is identical with the height of two limit legs.
Further, the length of above-mentioned magnetic core base plate is 14 ± 0.3mm, the total height of above-mentioned magnetic core is 6.8 ± 0.2mm, and the length on above-mentioned article one limit is 4.6 ± 0.2mm, and the column length of above-mentioned center pillar is 5.65 ± 0.15mm, the post of above-mentioned center pillar is wide is 2.05 ± 0.2mm, the post of above-mentioned center pillar is high is 4.75 ± 0.2mm, and the long spacing of above-mentioned limit leg is 11.3mm, and the short spacing of above-mentioned limit leg is 9.3mm, the length on above-mentioned the 5th limit is 2.35mm, and the length on above-mentioned second limit is 1.35mm.
Usefulness of the present utility model is: by column dimension and limit leg thickness in increasing, increase the effective volume of product, thereby product anti-saturation ability is increased.The cambered surface of limit leg design in addition, makes the more convenient assembling of magnetic core piece of the present utility model, and the number of turns of coiling increases 5-10%, in circuit, under the condition of same inductance, can also save the quantity of eddy current inductance, reaches the object reducing costs.
Accompanying drawing explanation
Fig. 1 is the perspective view of an embodiment of the present utility model;
Fig. 2 is Facad structure schematic diagram embodiment illustrated in fig. 1;
Fig. 3 is side structure schematic diagram embodiment illustrated in fig. 1;
Fig. 4 is Facad structure size schematic diagram embodiment illustrated in fig. 1;
Fig. 5 is side structure size schematic diagram embodiment illustrated in fig. 1;
Fig. 6 is the Facad structure size schematic diagram of existing EPC type magnetic core;
Fig. 7 is the side structure size schematic diagram of existing EPC type magnetic core.
The implication of Reference numeral in figure:
1-magnetic core base plate, 2-limit leg, 3-center pillar,
A-article one limit, b-second limit, the 3rd limit of c-, d-four edges, the 5th limit of e-,
The length of A-magnetic core base plate, the total height of B-magnetic core, the length on C-article one limit (being the length of limit leg), the column length of D-center pillar, the long spacing of E-limit leg, the post of F-center pillar is high, the post of G-center pillar is wide, the short spacing of H-limit leg, the length on I-second limit (being the top margin length of limit leg), the length on the 5th limit of J-(being the base length of limit leg).
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is done to concrete introduction.
A kind of magnetic core as shown in Figure 1 to Figure 3, comprises the magnetic core base plate 1 of strip, and one-body molded have center pillar 3 and two limit legs 2 that are positioned on magnetic core base plate 1; Limit leg 2 is to using polygon as the column of bottom surface, and bottom surface is for by article one limit a, second limit b, the 3rd limit c, four edges d and the 5th face that limit e joins end to end and forms; Article one, limit a is parallel with four edges d, and second limit b is perpendicular to article one limit a, and the 5th limit e is parallel to second limit b; The length of second limit b is less than the length of the 5th limit e, and the length of four edges d is less than the length of article one limit a, and the 3rd limit c is the camber line to a direction bending of article one limit; Article one, limit a and second limit b are along the edge distribution of magnetic core base plate 1; Center pillar 3 between two limit legs 2, center pillar 3 for bottom surface be the column of kidney-shaped.Article three, limit c is camber line, can increase winding turns so that the inner space of magnetic core piece increases, and increases magnetic permeability.
Limit leg 2 be take separated time in the long limit of magnetic core base plate 1 and is symmetrically distributed in the both sides of magnetic core base plate 1 as symmetry axis, and center pillar 3 is symmetrical about separated time in the long limit of magnetic core base plate 1.
Article one, limit a is along the broadside edge distribution of magnetic core base plate 1, and second limit b is along the long limit edge distribution of magnetic core base plate 1, and the length of article one limit a is greater than the width edge length of magnetic core base plate 1.
Article three, two end points of limit c are positioned at the edge on two long limits of magnetic core base plate 1.
As a kind of preferred version, between article one limit a and second limit b, between article one limit a and the 5th limit e, connect not fragile like this magnetic core piece between four edges d and the 5th limit e by fillet.
A straight flange of center pillar 3 on magnetic core base plate 1 along second limit b along edge distribution, the distance of 3 two straight flanges of center pillar is less than the width edge length of magnetic core base plate 1.Center pillar 3 is identical with the height of two limit legs 2.
Magnetic core piece as shown in Figure 4, Figure 5, the length A of magnetic core base plate is 14 ± 0.3mm, the total height B of magnetic core is 6.8 ± 0.2mm, article one, the length C on limit (being the length of limit leg) is 4.6 ± 0.2mm, the column length D of center pillar is 5.65 ± 0.15mm, the wide G of post of center pillar is 2.05 ± 0.2mm, the high F of post of center pillar is 4.75 ± 0.2mm, the long spacing E of limit leg is 11.3mm, the short spacing H of limit leg is 9.3mm, article five, the length J(on limit is the base length of limit leg) be 2.35 ± 0.3mm, the length I(on second limit is the top margin length of limit leg) be 1.35 ± 0.3mm.By increasing the size of magnetic core piece center pillar 3 and limit leg 2, increase the effective area of magnetic core piece, increase the anti-saturation ability of magnetic core piece.
The dimensional parameters of product is as shown in table 1:
The dimensional parameters table of an embodiment of table 1 the utility model
A B C D E F G H
14±0.3 6.8±0.2 4.6±0.2 5.65±0.15 11.3 4.75±0.2 2.05±0.2 9.3
Dimensional units: mm.
The dimensional parameters of existing EPC type magnetic core is as shown in Figure 6, Figure 7 as shown in table 2:
The dimensional parameters table of the existing EPC type of table 2 magnetic core
A1 B1 C1 D1 E1 F1 G1 H1
13.3±0.3 6.6±0.2 4.5±0.2 5.5±0.15 10.7 4.5±0.2 2.0±0.2 8.6
Dimensional units: mm.
Embodiment magnetic core piece shown in we mark the utility model Fig. 1 is product 1, and the existing EPC type magnetic core piece shown in signature 6, Fig. 7 is product 2, and the performance parameter of product is as shown in table 3:
The performance parameter table of table 3 product
Product Ae Le Ve C1 AL
Product 1 12.74 30.6 390 2.4 900nH/N 2±25%
Product 2 10.58 28.6 367.8 2.3 870nH/N 2±25%
Wherein the unit of Ae is mm 2, the unit of Le is mm, the unit of Ve is mm 3, inductance measurement condition is as follows, and frequency is 1KHz, and voltage is 300mV.
From size and performance parameter contrast, the more effective magnetic core anti-saturation ability that increased of magnetic core piece of the present utility model, by increasing size and the intrados of magnetic core, design, increase the parameters such as magnetic core effective area, the length of magnetic path, core volume, and then the equivalent inductance of increase magnetic core, power consumption also has downward trend simultaneously, and eddy current inductance quantity use amount also can decline, to reach the object reducing costs.
More than show and described basic principle of the present utility model, principal character and advantage.The technical staff of the industry should understand, and above-described embodiment does not limit the utility model in any form, and all employings are equal to replaces or technical scheme that the mode of equivalent transformation obtains, all drops in protection range of the present utility model.

Claims (8)

1. a magnetic core, comprises and it is characterized in that the magnetic core base plate of strip, and one-body molded have center pillar and two limit legs that are positioned on above-mentioned magnetic core base plate; Above-mentioned limit leg is to using polygon as the column of bottom surface, and above-mentioned bottom surface is for by article one limit, second limit, the 3rd limit, four edges and the 5th face that limit joins end to end and forms; Above-mentioned article one limit is parallel with four edges, and second limit is perpendicular to above-mentioned article one limit, and the 5th limit is parallel to above-mentioned second limit; The length on above-mentioned second limit is less than the length on above-mentioned the 5th limit, and the length of above-mentioned four edges is less than the length on above-mentioned article one limit, and above-mentioned the 3rd limit is the camber line to the bending of above-mentioned article one edge direction; Above-mentioned article one limit and second edge the edge distribution of above-mentioned magnetic core base plate; Above-mentioned center pillar is between above-mentioned two limit legs, and above-mentioned center pillar is that bottom surface is the column of kidney-shaped.
2. a kind of magnetic core according to claim 1, is characterized in that, above-mentioned limit leg be take the both sides of separated time above-mentioned magnetic core base plate as symmetry axis is symmetrically distributed in the long limit of above-mentioned magnetic core base plate, and above-mentioned center pillar is symmetrical about separated time in the long limit of above-mentioned magnetic core base plate.
3. a kind of magnetic core according to claim 2, it is characterized in that, above-mentioned article one edge the broadside edge distribution of above-mentioned magnetic core base plate, and second edge the long limit edge distribution of above-mentioned magnetic core base plate, and the length on above-mentioned article one limit is greater than the width edge length of above-mentioned magnetic core base plate.
4. a kind of magnetic core according to claim 3, is characterized in that, two end points on above-mentioned the 3rd limit are positioned at the edge on two long limits of above-mentioned magnetic core base plate.
5. a kind of magnetic core according to claim 4, is characterized in that, between above-mentioned article one limit and second limit, between above-mentioned article one limit and the 5th limit, connect by fillet between above-mentioned four edges and the 5th limit.
6. a kind of magnetic core according to claim 5, is characterized in that, a straight flange of above-mentioned center pillar on above-mentioned magnetic core base plate along above-mentioned second limit along edge distribution, the distance of two straight flanges of above-mentioned center pillar is less than the width edge length of above-mentioned magnetic core base plate.
7. according to a kind of magnetic core described in claim 1 to 6 any one, it is characterized in that, above-mentioned center pillar is identical with the height of two limit legs.
8. a kind of magnetic core according to claim 7, it is characterized in that, the length of above-mentioned magnetic core base plate is 14 ± 0.3mm, the total height of magnetic core is 6.8 ± 0.2mm, the length on above-mentioned article one limit is 4.6 ± 0.2mm, the column length of above-mentioned center pillar is 5.65 ± 0.15mm, the post of above-mentioned center pillar is wide is 2.05 ± 0.2mm, the post of above-mentioned center pillar is high is 4.75 ± 0.2mm, the long spacing of above-mentioned limit leg is 11.3mm, the short spacing of above-mentioned limit leg is 9.3mm, and the length on above-mentioned the 5th limit is 2.35mm, and the length on above-mentioned second limit is 1.35mm.
CN201320452413.4U 2013-07-26 2013-07-26 Magnetic core Active CN203456234U (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103426606A (en) * 2013-07-26 2013-12-04 鸿康磁业电子(昆山)有限公司 Magnetic core component
CN103426604A (en) * 2013-07-26 2013-12-04 鸿康磁业电子(昆山)有限公司 Magnetic core

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103426606A (en) * 2013-07-26 2013-12-04 鸿康磁业电子(昆山)有限公司 Magnetic core component
CN103426604A (en) * 2013-07-26 2013-12-04 鸿康磁业电子(昆山)有限公司 Magnetic core

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