CN103985522A - Bias magnetic core and circuit board applying magnetic core - Google Patents
Bias magnetic core and circuit board applying magnetic core Download PDFInfo
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- CN103985522A CN103985522A CN201410166020.6A CN201410166020A CN103985522A CN 103985522 A CN103985522 A CN 103985522A CN 201410166020 A CN201410166020 A CN 201410166020A CN 103985522 A CN103985522 A CN 103985522A
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- base plate
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Abstract
The invention discloses a bias magnetic core. A winding post is an upright post of which the bottom surface is a rounded rectangle; side plates have L-shaped structures; the winding post is positioned on the middle part of a bottom plate, and is consistent with the bottom plate in the length and width directions; the two side plates are positioned on both sides of the bottom plate in the width direction; the distances between the two ends of the winding post in the width direction and long plates of the two side plates are smaller than the length of the winding post; the distance L2 between one side of the winding post in the length direction and the side A of the bottom plate in the length direction is equal to D1; the distance D3 between the other side of the winding post in the length direction and a side B, which is opposite to the side A, of the bottom plate in the length direction is smaller than D2; the inner side faces of the L-shaped structures of the side plates are in smooth transition. According to the bias magnetic core disclosed by the invention, the magnetic core is reasonable in structural layout and large in the effective working area, so that the problem of divergence of coil magnetic induction lines on the root of the winding post is solved, and the stability and reliability of the electromagnetic property of the magnetic core are improved. The invention further provides a circuit board in which the bias magnetic core is applied.
Description
Technical field
The present invention relates to magnetic core technical field, relate in particular to a kind of bias magnetic core and apply the circuit board of described magnetic core.
Background technology
Magnetic core is the sintering magnetic metal oxide by various iron oxide compositions of mixtures, and in prior art, FERRITE CORE is for coil and the transformer of various electronic equipments.For example, manganese-zinc ferrite and nickel-zinc ferrite are typical magnetic core array materials, wherein, manganese-zinc ferrite has the feature of high magnetic permeability and high magnetic flux density, in the time of the frequency lower than 1MHz, there is more low-loss characteristic, nickel-zinc ferrite has high unit area impedance, less than characteristics such as the low magnetic permeabilities of hundreds of, and produce compared with low-loss in the frequency higher than 1MHz etc.
The material of magnetic core and structure are the key factors that affects magnetic core performance.Conventional FERRITE CORE, the effective work area of magnetic core is little, is difficult for the also shortcoming such as poor of coiling, magnetic screen.Therefore, need to design a kind of magnetic core, this magnetic core answers that the stability and reliability of electromagnetic property is high, effective working space is large, easily coiling, there is good magnetic shield performance.
Summary of the invention
The problem existing for prior art, the present invention proposes a kind of bias magnetic core, and the topology layout of magnetic core is reasonable, and effective working space is large, easy coiling, has improved stability and the reliability of the electromagnetic property of magnetic core simultaneously.
A kind of bias magnetic core that the present invention proposes, comprising: wrapping post, two side plates and base plate, wrapping post is that bottom surface is the column of round rectangle, side plate is the L-type structure being made up of long slab and short slab, base plate is shaped as rectangle, wrapping post be positioned at base plate middle part and its length and width direction consistent with the length and width direction of base plate, two side plates are positioned at baseplate width direction both sides and vertical with base plate, the direction of the long slab of side plate is consistent with baseplate width direction, the short slab of two side plates is all positioned at the A side of floor length direction, distance B 1 between the long slab of the two ends to two of a wrapping post Width side plate is less than the length of wrapping post, wrapping post length direction one side to the distance L 2 between the A side of the length direction of base plate equals D1, the opposite side of wrapping post length direction to the distance B 3 between the floor length direction B side relative with A side is less than D2, the medial surface rounding off of the L-type structure of side plate, and the medial surface of L-type structure is crossing with the lateral surface that short slab is positioned at base plate A side, the long slab length of side plate equates with the width of base plate.
Preferably, the rib of the bottom of base plate is provided with chamfering.
Preferably, the 0.15-0.25 that D3 is D2 doubly.
Preferably, the rib that is positioned at B side on plate top surface is provided with chamfering.
In the bias magnetic core that the present invention proposes, wrapping post is that bottom surface is the column of round rectangle, side plate is L-type structure, wrapping post be positioned at base plate middle part and its length and width direction consistent with the length and width direction of base plate, two side plates are positioned at baseplate width direction both sides and vertical with base plate, the direction of the long slab of side plate is consistent with baseplate width direction, the short slab of two side plates is all positioned at the A side of floor length direction, distance B 1 between the long slab of the two ends to two of a wrapping post Width side plate is less than the length of wrapping post, wrapping post length direction one side to the distance L 2 between the A side of the length direction of base plate equals D1, the opposite side of wrapping post length direction is less than the medial surface rounding off of the L-type structure of D2 side plate to the distance B 3 between the floor length direction B side relative with A side, and the medial surface of L-type structure is crossing with the lateral surface that short slab is positioned at base plate A side, the long slab length of side plate equates with the width of base plate.By wrapping post is setovered, and be provided with surrounding edge away from wrapping post one side, core structure is optimized to design, effective work area and the number of turns of magnetic core are increased, improve space availability ratio, strengthened Magnetic Shielding Effectiveness, make topology layout and the design of magnetic core more reasonable, improved stability and the reliability of the electromagnetic property of magnetic core simultaneously.
The invention allows for a kind of circuit board, described circuit board is provided with installation through hole, in described installation through hole, be provided with two above-mentioned bias magnetic cores staggered relatively, the base plate place plane parallel of described magnetic core is in surface, circuit board place, wrapping post and the side plate of two bias magnetic cores abut one another respectively, are wound with coil on wrapping post.
The technique effect of described circuit board is substantially similar to above-mentioned bias magnetic core effect, therefore here repeats no more.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of bias magnetic core of proposing of the present invention.
Fig. 2 is the front view of the bias magnetic core that proposes in Fig. 1.
Fig. 3 is that the magnetic core proposing in Fig. 1 is installed to the end view on circuit board.
Embodiment
Further illustrate technical scheme of the present invention below in conjunction with accompanying drawing and by embodiment:
As shown in Figures 1 to 3, Fig. 1 is the structural representation of a kind of bias magnetic core of proposing of the present invention, and Fig. 2 is the front view of the bias magnetic core that proposes of Fig. 1, and Fig. 3 is that the magnetic core proposing in Fig. 1 is installed to the end view on circuit board.
With reference to Fig. 1 and 2, a kind of magnetic core that the present invention proposes, comprising: wrapping post 1, two side plates 2 and base plates 3; Wherein:
The column that wrapping post 1 is round rectangle for bottom surface, the L-type structure of side plate 2 for being formed by long slab 21 and short slab 22, base plate 3 is shaped as rectangle, wrapping post 1 is positioned at base plate 3 middle parts and its length and width direction is consistent with the length and width direction of base plate 3, two side plates 2 are positioned at base plate 3 Width both sides and vertical with base plate 3, the direction of the long slab 21 of side plate 2 is consistent with base plate 3 Widths, and the short slab 22 of two side plates 2 is all positioned at the A side of base plate 3 length directions;
Distance B 1 between the long slab 21 of the two ends to two of a wrapping post 1 Width side plate 2 is less than the length of wrapping post 1, wrapping post 1 length direction one side to the distance L 2 between the A side of the length direction of base plate 3 equals D1, the 0.15-0.25 that the opposite side of wrapping post 1 length direction to the distance B 3 between the base plate 3 length directions B side relative with A side is D2 doubly, the medial surface rounding off of the L-type structure of side plate 2, and it is crossing that the medial surface of L-type structure and short slab 22 are positioned at the lateral surface of A side of base plate 1, long slab 21 length of side plate 2 equate with the width of base plate 3, the rib that is positioned at B side on base plate 3 end faces is provided with chamfering.
In a preferred embodiment, the 0.18-0.22 that D3 is D2 doubly, is preferably 0.2 times.
In concrete enforcement, the column that wrapping post 1 is round rectangle for bottom surface, side plate 2 is L-type structure, wrapping post 1 is positioned at base plate 3 middle parts and its length and width direction is consistent with the length and width direction of base plate 3, two side plates 2 are positioned at base plate 3 Width both sides and vertical with base plate 3, the direction of the long slab 21 of side plate 2 is consistent with base plate 3 Widths, the short slab 22 of two side plates 2 is all positioned at the A side of base plate 3 length directions, distance B 1 between the long slab 21 of the two ends to two of a wrapping post 1 Width side plate 2 is less than the length of wrapping post 1, wrapping post 1 length direction one side to the distance L 2 between the A side of the length direction of base plate 3 equals D1, the opposite side of wrapping post 1 length direction to the distance B 3 between the base plate 3 length directions B side relative with A side is D2 0.2 times, the medial surface rounding off of the L-type structure of side plate 2, and it is crossing that the medial surface of L-type structure and short slab 22 are positioned at the lateral surface of A side of base plate 3, the long slab length of side plate 2 equates with the width of base plate 3.By core structure is optimized to design, effective work area and the winding space of magnetic core are increased, improve space availability ratio, strengthened Magnetic Shielding Effectiveness, make the topology layout of magnetic core and design more reasonable, improved stability and the reliability of the electromagnetic property of magnetic core simultaneously.
The rib that is positioned at B side on base plate 3 end faces is provided with chamfering, ensures that the coil of close base plate, can be not damaged in the time of coiling and work.
The rib of the bottom of base plate 3 is provided with chamfering, is convenient to magnetic core assembling.
In embodiments of the present invention, a kind of circuit board 4 also proposing.With reference to Fig. 3, circuit board 4 is provided with two above-mentioned bias magnetic cores.In concrete setting up procedure, in circuit board 4, be provided with installation through hole, two bias magnetic cores are oppositely arranged in this installation through hole, the base plate 3 place plane parallel of two bias magnetic cores are in circuit board 4 place planes, wrapping post 1 and the side plate 2 of two bias magnetic cores abut one another respectively, on wrapping post 1, are wound with coil; In use, magnetic core embeds in circuit board 4, generates induced field when electric current flows through coil, in less circuit board space, realizes magnetic loop, improves the space availability ratio of circuit board 4; Meanwhile, coil is enclosed in two core structures, reduces the generation of leakage field phenomenon, and effectively plays magnetic screening action.
The above; it is only preferably embodiment of the present invention; but protection scope of the present invention is not limited to this; any be familiar with those skilled in the art the present invention disclose technical scope in; be equal to replacement or changed according to technical scheme of the present invention and inventive concept thereof, within all should being encompassed in protection scope of the present invention.
Claims (5)
1. a bias magnetic core, is characterized in that, comprising: wrapping post (1), two side plates (2) and base plate (3); the column that wrapping post (1) is round rectangle for bottom surface, side plate (2) is the L-type structure being made up of long slab (21) and short slab (22), base plate (3) is shaped as rectangle, wrapping post (1) be positioned at base plate (3) middle part and its length and width direction consistent with the length and width direction of base plate (3), two side plates (2) are positioned at base plate (3) Width both sides and vertical with base plate (3), the direction of the long slab (21) of side plate (2) is consistent with base plate (3) Width, the short slab (22) of two side plates (2) is all positioned at the A side of base plate (3) length direction, distance B 1 between the long slab (21) of two ends to two side plate (2) of wrapping post (1) Width is less than the length of wrapping post (1), wrapping post (1) length direction one side to the distance L 2 between the A side of the length direction of base plate (3) equals D1, the opposite side of wrapping post (1) length direction is less than the medial surface rounding off of the L-type structure of D2 side plate (2) to the distance B 3 between base plate (3) the length direction B side relative with A side, and the medial surface of L-type structure is crossing with the lateral surface that short slab (22) is positioned at base plate (1) A side, long slab (21) length of side plate (2) equates with the width of base plate (3).
2. bias magnetic core according to claim 1, is characterized in that, the rib of the bottom of base plate (3) is provided with chamfering.
3. bias magnetic core according to claim 1, is characterized in that, the 0.15-0.25 that D3 is D2 doubly.
4. bias magnetic core according to claim 1, is characterized in that, the rib that is positioned at B side on base plate (3) end face is provided with chamfering.
5. a circuit board, it is characterized in that, described circuit board is provided with installation through hole, in described installation through hole, be provided with staggered relatively two according to the bias magnetic core described in claim 1-4 any one, base plate (3) the place plane parallel of described magnetic core is in surface, circuit board place, wrapping post (1) and the side plate (2) of two bias magnetic cores abut one another respectively, on wrapping post (1), are wound with coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410166020.6A CN103985522A (en) | 2014-04-23 | 2014-04-23 | Bias magnetic core and circuit board applying magnetic core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410166020.6A CN103985522A (en) | 2014-04-23 | 2014-04-23 | Bias magnetic core and circuit board applying magnetic core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103985522A true CN103985522A (en) | 2014-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410166020.6A Pending CN103985522A (en) | 2014-04-23 | 2014-04-23 | Bias magnetic core and circuit board applying magnetic core |
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| Country | Link |
|---|---|
| CN (1) | CN103985522A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11343933B2 (en) | 2019-11-12 | 2022-05-24 | Pegatron Corporation | Circuit board and cable management structure thereof |
-
2014
- 2014-04-23 CN CN201410166020.6A patent/CN103985522A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11343933B2 (en) | 2019-11-12 | 2022-05-24 | Pegatron Corporation | Circuit board and cable management structure thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140813 |
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| WD01 | Invention patent application deemed withdrawn after publication |