CN103295740B - A kind of magnetic core piece - Google Patents
A kind of magnetic core piece Download PDFInfo
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Abstract
The invention discloses a kind of magnetic core piece, comprise: core body, it is characterized in that, above-mentioned core body is formed with following structure: have plate structure and biside plate mask has the core wall of rectangular profile, is formed at two of above-mentioned core wall interior plate face identical and parallel cuboid limit legs, is formed at interior plate face equally and is in the center pillar between two above-mentioned limit legs; Above-mentioned core wall and two limit legs are " recessed " font perpendicular to shape formed after the cross section institute cutting in above-mentioned core wall interior plate face; The size of above-mentioned center pillar on the direction being parallel to above-mentioned limit leg long arris line is less than the length of above-mentioned limit leg crest line.Usefulness of the present invention is: by limit leg and center pillar improvement in design, and the magnetic strength amount that the design of gap slot position and shape makes the center pillar of magnetic core piece of the present invention provide is by more effective utilization.
Description
Technical field
The present invention relates to a kind of magnetic core piece, in particular to a kind of magnetic core piece that effectively can be hoisted through coil magnetic strength amount.
Background technology
As shown in Figure 1, traditional E-type magnetic chipware, the magnetic induction line at its center pillar two ends is due to the characteristic in magnetic field itself, and the impact of the magnetic induction line of dual-side leg, disperse the space for winding around that magnetic core is preset outside major part magnetic induction line, so the magnetic strength amount of center pillar is consumed to a certain extent and is wasted.So existing E-type magnetic core often just needs when embody rule to adopt many groups to combinationally use, the space increased shared by magnetic core also improves cost indirectly.
Summary of the invention
For solving the deficiencies in the prior art, the object of the present invention is to provide a kind of magnetic core piece that effectively can solve the empty consumption problem of center pillar magnetic of novel structure.
In order to realize above-mentioned target, the present invention adopts following technical scheme:
A kind of magnetic core piece, comprise: core body, it is characterized in that, above-mentioned core body is formed with following structure: have plate structure and biside plate mask has the core wall of rectangular profile, is formed at two of above-mentioned core wall interior plate face identical and parallel cuboid limit legs, is formed at interior plate face equally and is in the center pillar between two above-mentioned limit legs; Above-mentioned core wall and two limit legs are " recessed " font perpendicular to shape formed after the cross section institute cutting in above-mentioned core wall interior plate face; The size of above-mentioned center pillar on the direction being parallel to above-mentioned limit leg long arris line is less than the length of above-mentioned limit leg crest line.
Further, the wherein one group opposite side of long arris line parallel in the outline of above-mentioned interior plate face of above-mentioned two limit legs, this group opposite side is first group of opposite side, another group opposite side is second group of opposite side, the both sides laying respectively at above-mentioned first group of opposite side place of above-mentioned limit leg, and its long arris line parallel is in above-mentioned first group of opposite side, in four rectangular surfaces facing each other at leg long arris line place, above-mentioned limit, wherein one group two relative planes are all perpendicular to above-mentioned interior plate face, and one overlaps with a limit in above-mentioned first group of opposite side of this side, leg place, limit in them, another and interior plate face form hierarchic structure, the length of the long arris line of above-mentioned limit leg equals the length of above-mentioned first group of opposite side, above-mentioned center pillar is symmetrical at the two ends in direction being parallel to above-mentioned limit leg long arris line relative to the center of above-mentioned core wall interior plate face rectangle.
Further, to protrude the height in above-mentioned interior plate face identical for above-mentioned center pillar and limit leg.
Further, the above-mentioned center pillar part protruded outside above-mentioned core wall inner face is parallel to the arbitrary plane institute cutting shape formed thereby in above-mentioned interior plate face is the kidney-shaped that straight line is parallel to the long arris line of above-mentioned limit leg.
Further, above-mentioned center pillar is greater than above-mentioned limit leg size in the direction in which in the size in the direction being parallel to above-mentioned second group of opposite side.
Further, the both sides being positioned at above-mentioned second group of opposite side in above-mentioned core wall interior plate face all have gap slot; The end that above-mentioned center pillar is positioned at above-mentioned gap slot place invades above-mentioned gap slot and the part invaded extends downward the groove bottom that gap slot is parallel to above-mentioned core wall interior plate face.
Further, above-mentioned gap slot is shunk near being formed along being parallel to the above-mentioned center pillar of above-mentioned limit leg long arris alignment gradually by the edge of above-mentioned core wall.
Further, above-mentioned gap slot internally to be formed in the direction in interior plate face by the surface along orthogonal in the interior plate face of above-mentioned core wall and shrinks gradually.
Further, after above-mentioned gap slot is parallel to the arbitrary plane institute cutting in above-mentioned interior plate face, except the part of being invaded by above-mentioned center pillar, all the other profiles form the partial contour of isosceles trapezoid.
Further, above-mentioned gap slot is isosceles trapezoid by the arbitrary plane institute cutting shape formed thereby perpendicular to above-mentioned interior plate face except the part of being invaded by above-mentioned center pillar.
Usefulness of the present invention is: by limit leg and center pillar improvement in design, and the magnetic strength amount that the design of gap slot position and shape makes the center pillar of magnetic core piece of the present invention provide is by more effective utilization.
Accompanying drawing explanation
Fig. 1 is existing E-type magnetic core magnetic induction line schematic diagram;
Fig. 2 is the perspective view of a preferred embodiment of the invention;
Fig. 3 is main TV structure schematic diagram embodiment illustrated in fig. 2;
Fig. 4 is side-looking structural representation embodiment illustrated in fig. 2;
Fig. 5 is the schematic diagram of center pillar magnetic induction line embodiment illustrated in fig. 2;
Fig. 6 is decomposition texture schematic diagram embodiment illustrated in fig. 2;
Fig. 7 is main TV structure scale diagrams embodiment illustrated in fig. 2;
Fig. 8 is side-looking physical dimension schematic diagram embodiment illustrated in fig. 2;
Fig. 9 is the scale diagrams of the main TV structure of existing E-type magnetic core as product 2;
Figure 10 is the scale diagrams of the existing E-type magnetic core side-looking structure as product 2.
The implication of Reference numeral in figure:
1, core wall, 101, interior plate face, a limit in 102, first group of opposite side, a limit of 103, second group of opposite side;
2, limit leg, 201, in long arris line one;
3, center pillar;
4, gap slot, 401, the groove bottom of gap slot.
A, core wall width, B, height overall, C, core wall length, D, post are wide, E, leg spacing, and F, post are high, G, column length, and H, straight flange are long, I, top margin length, J, base length, K, groove depth.
Embodiment
Below in conjunction with the drawings and specific embodiments, concrete introduction is done to the present invention.
With reference to shown in Fig. 2 to Fig. 5, magnetic core piece of the present invention comprises core body.
For core body, it is formed with following structure: a core wall 1, two limit legs 2, center pillar 3.
Integrally formed core wall 1, limit leg 2, the center pillar 3 referring to core body mentioned here is all be integrally formed after oversintering by the thick embryo of magnetic material, they constitutes an entirety.As a kind of preferred version, the magnetic core piece in the present invention is made up of manganese-zinc ferrite.
The core wall 1 that core body is formed has plate structure and biside plate face is rectangle, and plate structure mentioned here refers to have two parallel plate faces, and the two-dimensional in plate face should much larger than the structure of the distance between two plate faces.As for the concrete form at the edge between two plate faces, as a kind of preferred version, when biside plate face is rectangle, as shown in Figure 6, we connect biside plate face by four rectangular surfaces, so, core wall 1 is the cuboid of a template, and its thickness (distance namely between biside plate face) will much smaller than the size in its length and width direction (i.e. the two-dimensional in biside plate face).
It should be noted that, be rectangle as biside plate face, when not forming the embodiment of gap slot 4 in biside plate face, biside plate face is proper rectangle plane, but in the embodiment defining gap slot 4, although biside plate face is no longer rectangular profile on stricti jurise because of the existence of gap slot 4, but gap slot 4 is through two plate faces not, for outer panel face, it is still proper rectangular slab face, and interior plate face 101 is except forming gap slot 4 part, other parts are still rectangular profile, and gap slot 4 is only slot on the opposite side forming it, therefore it is equivalent to inherit original rectangular profile, we itself are to introduce rectangular profile that position relationship introduces just to utilizing some opposite side, the position concept such as mid point, although but inner surface is no longer proper rectangular profile the not change of relative position relationship and some position concept, even if so in the embodiment with gap slot 4, we are position relationship for convenience of description, I thinks that interior plate face 101 still has one " rectangular profile " and according to its rectangular profile.
Limit leg 2 is formed at the both sides in the interior plate face 101 of core wall 1, limit leg 2 is implemented with the form of cuboid, due to the needs of the follow-up combination for magnetic core piece, so two limit legs are identical, and they are parallel to each other, each crest line being parallel to each other the cuboid referring to two limit legs mentioned here is all corresponding parallel, so their attitudes are in space identical, that is limit leg can regard that another limit leg keeps attitude shift copy to go out as the same.
Limit leg 2 is formed at core wall 1 Liang Ge edge, the structure that they and core wall 1 form is " recessed " font by the shape of the cross section institute cutting perpendicular to core wall interior plate face 101, specifically, the wherein one group opposite side of long arris line parallel in the outline of interior plate face 101 of two limit legs, this group opposite side is first group of opposite side, another group opposite side is second group of opposite side, limit leg 2 lays respectively at the both sides at first group of opposite side place, and its long arris line parallel is in first group of opposite side, in four rectangular surfaces facing each other at limit leg long arris line place, wherein one group two relative planes are all perpendicular to interior plate face 101, and one overlaps with a limit 102 in first group of opposite side of this side, leg place, limit in them, another and interior plate face 101 form hierarchic structure, the length of the long arris line of limit leg 2 equals the length of first group of opposite side, so, namely limit leg 2 and core wall 1 form the limit leg of general E-type magnetic core and core wall forms structure.So-called long arris line refers in cuboid, four crest lines that length is the longest, and these four crest line length are identical and parallel to each other.
Center pillar 3 is formed between two limit legs 2, is in placely set up, and center pillar 3 of the present invention is similar with the center pillar in general E-type magnetic core.But the center pillar in the present invention 3 size be parallel on the direction of limit leg 2 long arris line is less than the length of the long arris line of limit leg 2.Furthermore, center pillar 3 is symmetrical at the two ends in direction being parallel to limit leg 2 long arris line relative to the center (i.e. rectangular profile two cornerwise intersection points) of core wall interior plate face 101 rectangular profile, is also all symmetrical with regard to two limits in one group of opposite side in the post 3 relative inner plate face 101 that is right.
So, center pillar 3 of the present invention is for existing E-type magnetic core, it is except forming the space of accommodation coil between two limit legs 2, its size be parallel on the direction of the long arris line of limit leg 2 is less than the length of limit leg crest line, that is in the semi-open space that to be indentation two limit legs 2 surround with core wall 1, center pillar 3 two ends in this direction, comparison diagram 1 and Fig. 5, we can see that the magnetic induction line at the two ends of existing E-type magnetic core center pillar 3 is excessive, so this magnetic representated by a part of magnetic induction line can not be utilized, same limit leg 2 has the distribution of similar magnetic induction line, so under limit leg 2 acts on, center pillar 3 magnetic induction line is excessive thus magnetic waste degree is more serious (although Fig. 1 only illustrates a dimension, but such situation occurs in three dimensions, and review center pillar 3 of the present invention shown in Fig. 5, due in indentation limit, two ends leg 2, first better can cover the end of dispersing of center pillar 3 during winding around, secondly limit leg 2 is not make it disperse but make it return to space between center pillar 3 and limit leg 2 on the impact that the magnetic induction line that center pillar 3 independently produces produces, and so not only reduces the utilance that consume further increases the magnetic of center pillar 3 on the contrary.This to use only by column dimension in strengthening or multiple core combination from general thus to solve the mentality of designing of magnetic strength quantity not sufficient different, reduces cost on the contrary.
As a kind of preferred version, as shown in Figure 2, the both sides that core wall interior plate face 101 is positioned at second group of opposite side all have gap slot 4; Center pillar 3 is positioned at the end intrusion gap slot 4 at gap slot 4 place and the part invaded extends downward the groove bottom that gap slot 4 is parallel to core wall interior plate face 101; Gap slot 4 is shunk near being formed along being parallel to limit leg 2 long arris alignment center pillar 3 gradually by the edge of core wall 1; Gap slot 4 internally to be formed in the direction in interior plate face 101 by the surface along orthogonal in the interior plate face 101 of core wall 1 and shrinks gradually.After gap slot 4 is parallel to the arbitrary plane institute cutting in interior plate face 101, except the part of being invaded by center pillar 3, all the other profiles form the partial contour of isosceles trapezoid, if center pillar 3 designs for kidney-shaped, the top margin position of this isosceles trapezoid is just in time at the intersection of kidney-shaped straight flange and arc-shaped edges.Gap slot 4 is except the part of being invaded by center pillar 3, and remaining is isosceles trapezoid by the arbitrary plane institute cutting shape formed thereby perpendicular to interior plate face 101.
The object of gap slot 4, due between indentation limit, center pillar 3 two ends leg 2 instead of alignment, but core wall 1 aligns with limit leg 2 in the direction in which, so the root place of center pillar 3 on inner surface, magnetic induction line also can be wasted in core wall 1 impact, that is the coil that root place is wound around can be passed through by the magnetic induction line more less than other parts, namely this place magnetic flux density vertical with the direction in interior plate face 101 on more weak than other places, the design of gap slot 4, center pillar 3 is made to produce the bottom land of this root phenomenon position transfer to gap slot 4, and we know that coil is only wound into interior plate face 101 place, so be now no longer subject near the coil in interior plate face 101 impact that root magnetic induction line disperses, and reduce further the cost of magnetic core material therefor.
As a kind of preferred version, center pillar 3 is identical with the height that limit leg 2 protrudes interior plate face 101; The arbitrary plane institute cutting shape formed thereby that center pillar 3 part protruded outside core wall interior plate face 101 is parallel to interior plate face 101 is the kidney-shaped that straight line is parallel to the long arris line of limit leg 2.
As a kind of concrete scheme, we provide the concrete size of magnetic core piece of the present invention shown in a Fig. 2, with reference to shown in Fig. 7 and Fig. 8, Fig. 7 and Fig. 8 shows concrete size implication embodiment illustrated in fig. 2, wherein, the length of side of the 101 first groups of opposite side in interior plate face equals the length of the long arris line of limit leg 2, we claim this to be of a size of core wall length C, core wall length C is 25.3 ± 0.4mm, the length of side of second group of opposite side is called core wall width A, core wall width is 12.1 ± 0.30mm, and the distance between core wall interior plate face 101 and outer panel face is core wall thickness, core wall thickness is 1.55 ± 0.15mm, and the full-size of center pillar 3 on the direction being parallel to long arris line we be called column length G, column length G is 21.8 ± 0.20mm, if center pillar 3 adopts kidney-shaped to design, be then the long H of straight flange in the length of kidney-shaped straight flange, the long H of straight flange is 20.0 ± 0.20mm, and center pillar 3 perpendicular to long arris line but be parallel to the direction in interior plate face 101 full-size we be called the wide D of post, the wide D of post is 3 ± 0.15mm, and the vertical range that center pillar 3 and limit leg 2 protrude interior plate face 101 is called post height F and leg is high, their value is equal is in the present embodiment 3.65 ± 0.15mm, core wall outer panel face is parallel to limit leg 2 and distance farthest away from its that rectangular surfaces is called height overall B, and height overall B is 5.2 ± 0.15mm, two limit legs 2 are leg spacing E perpendicular to two of interior plate face 101 distance between the rectangular surfaces of inner side, and leg spacing E is 8.45 ± 0.25mm.In this embodiment, center pillar 3 part protruded outside the inner face of interior plate face 101 is parallel to the arbitrary plane institute cutting shape formed thereby in interior plate face 101 is the kidney-shaped that straight line is parallel to the long arris line of limit leg; And gap slot 4 to be parallel to after the arbitrary plane institute cutting in interior plate face 101 all the other profiles except the part of being invaded by center pillar 3 and to form the partial contour of isosceles trapezoid, the top margin position of this isosceles trapezoid is just in time at the intersection of kidney-shaped straight flange and arc-shaped edges.Distance now between two gap slots 4 isosceles trapezoid profile top margin on interior plate face 101 equals the long H of straight flange, and by the long H of straight flange, we can calculate the trapezoidal height of this isosceles trapezoid profile, the i.e. horizontal range of isosceles trapezoid profile top margin distance second group of opposite side, here to be parallel to the plane in interior plate face 101 as horizontal plane.And this gap slot 4 is positioned at the length of isosceles trapezoid profile top margin on interior plate face 101 and the length on base is that inner side groove width and outside groove width are (although destroyed by center pillar profile, but two of top margin originally summits are in esse, so the distance between them, namely the length of top margin is also confirmable); Top margin length I is 5 ± 0.05mm, and base length J is 5.5 ± 0.05mm, and the groove bottom 401 of gap slot is parallel to interior plate face 101, and the distance in itself and interior plate face 101 is groove depth K, groove depth K is 0.7 ± 0.01mm.
Wherein, the concrete numerical value of size of each letter representative is as shown in table 1, and unit is millimeter
| A | B | C | D | E | F | G | H |
| 12.1±0.30 | 5.2±0.15 | 25.3±0.4 | 3±0.15 | 8.45±0.25 | 3.65±0.15 | 21.8±0.20 | 20.0±0.20 |
Table 1
With reference to shown in Fig. 9 and Figure 10, Fig. 9 and Figure 10 is the scale diagrams of an existing E-type magnetic core, and we do comparative analysis by by the magnetic core piece shown in this concrete magnetic core and Fig. 2 of the present invention; The column length G1 of existing E-type magnetic core center pillar equals core wall length C1; Because center pillar is cuboid, so the straight flange that existing E-type magnetic core does not exist the kidney-shaped center pillar of magnetic core piece of the present invention is long.Therefore only list in table 2 that the core wall width of existing magnetic core, height overall, core wall length, post are wide, leg spacing and the high concrete numerical value of post.
Wherein, the concrete numerical value of size of each letter representative is as shown in table 2, and unit is millimeter
| A1 | B1 | C1 | D1 | E1 | F1 |
| 16.0±0.3 | 7.3±0.2 | 4.8±0.2 | 4.0±0.2 | 11.7 | 5.4±0.2 |
Table 2
We mark the embodiment magnetic core piece shown in Fig. 2 of the present invention is product 1, general E-type magnetic chipware shown in signature 9 Figure 10 is product 2, their equal manganese-zinc ferrites are made, and after we carry out the identical test of test condition to them, their characterisitic parameter is more as shown in table 3.
| Product | Ae | Le | Ve | C1 | AL |
| Product 2 | 19.33 | 35.46 | 685.6 | 2.07 | 1240nH/N 2±25% |
| Product 1 | 70.03 | 24.93 | 1746 | 0.356 | 5200nH/N 2±25% |
Table 3
Wherein the unit of Ae is square millimeter, and the unit of Le is millimeter, and the unit of Ve is cubic millimeter, and inductance measurement condition is as follows, and frequency is 1KHz, and voltage is 300mV.
From size and Data Comparison, the inductance value that four set products 2 produce is equivalent to the inductance value that a set product 1 can produce, so no matter from assembling, or on cost, product 1 i.e. the solution of the present invention all has obviously advantage.
More than show and describe general principle of the present invention, principal character and advantage.The technical staff of the industry should understand, and above-described embodiment does not limit the present invention in any form, the technical scheme that the mode that all employings are equal to replacement or equivalent transformation obtains, and all drops in protection scope of the present invention.
Claims (9)
1. a magnetic core piece, comprise: core body, it is characterized in that, above-mentioned core body is formed with following structure: have plate structure and biside plate mask has the core wall of rectangular profile, is formed at two of above-mentioned core wall interior plate face identical and parallel cuboid limit legs, is formed at interior plate face equally and is in the center pillar between two above-mentioned limit legs; Above-mentioned core wall and two limit legs are " recessed " font perpendicular to shape formed after the cross section institute cutting in above-mentioned core wall interior plate face; The size of above-mentioned center pillar on the direction being parallel to above-mentioned limit leg long arris line is less than the length of above-mentioned limit leg crest line; The wherein one group opposite side of long arris line parallel in the outline of above-mentioned interior plate face of above-mentioned two limit legs, this group opposite side is first group of opposite side, and another group opposite side is second group of opposite side; The both sides being positioned at above-mentioned second group of opposite side in above-mentioned core wall interior plate face all have gap slot; The end that above-mentioned center pillar is positioned at above-mentioned gap slot place invades above-mentioned gap slot and the part invaded extends downward the groove bottom that gap slot is parallel to above-mentioned core wall interior plate face.
2. magnetic core piece according to claim 1, it is characterized in that, above-mentioned limit leg lays respectively at the both sides at above-mentioned first group of opposite side place, and its long arris line parallel is in above-mentioned first group of opposite side, in four rectangular surfaces facing each other at leg long arris line place, above-mentioned limit, wherein one group two relative planes are all perpendicular to above-mentioned interior plate face, and one overlaps with a limit in above-mentioned first group of opposite side of this side, leg place, limit in them, another and interior plate face form hierarchic structure, the length of the long arris line of above-mentioned limit leg equals the length of above-mentioned first group of opposite side, above-mentioned center pillar is symmetrical at the two ends in direction being parallel to above-mentioned limit leg long arris line relative to the center of above-mentioned core wall interior plate face rectangle.
3. magnetic core piece according to claim 2, is characterized in that, the height that above-mentioned center pillar and limit leg protrude above-mentioned interior plate face is identical.
4. magnetic core piece according to claim 3, is characterized in that, the arbitrary plane institute cutting shape formed thereby that the above-mentioned center pillar part protruded outside above-mentioned core wall inner face is parallel to above-mentioned interior plate face is the kidney-shaped that straight line is parallel to the long arris line of above-mentioned limit leg.
5. magnetic core piece according to claim 4, is characterized in that, above-mentioned center pillar is greater than above-mentioned limit leg size in the direction in which in the size in the direction being parallel to above-mentioned second group of opposite side.
6. the magnetic core piece according to claim 1 to 5 any one, is characterized in that, above-mentioned gap slot is shunk near being formed along being parallel to the above-mentioned center pillar of above-mentioned limit leg long arris alignment gradually by the edge of above-mentioned core wall.
7. magnetic core piece according to claim 6, is characterized in that, above-mentioned gap slot internally to be formed in the direction in interior plate face by the surface along orthogonal in the interior plate face of above-mentioned core wall and shrinks gradually.
8. magnetic core piece according to claim 7, is characterized in that, after above-mentioned gap slot is parallel to the arbitrary plane institute cutting in above-mentioned interior plate face, except the part of being invaded by above-mentioned center pillar, all the other profiles form the partial contour of isosceles trapezoid.
9. magnetic core piece according to claim 8, is characterized in that, above-mentioned gap slot is isosceles trapezoid by the arbitrary plane institute cutting shape formed thereby perpendicular to above-mentioned interior plate face except the part of being invaded by above-mentioned center pillar.
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| CN110676011A (en) * | 2019-11-08 | 2020-01-10 | 汕头市信技电子科技有限公司 | Surface-mounted inductor with composite structure and manufacturing method thereof |
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| CN203325650U (en) * | 2013-05-21 | 2013-12-04 | 鸿康磁业电子（昆山）有限公司 | Magnetic core piece |
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| JP5218446B2 (en) * | 2010-02-15 | 2013-06-26 | 株式会社デンソー | Magnetic parts |
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| TW584307U (en) * | 2002-08-20 | 2004-04-11 | Acbel Polytech Inc | Improved transformer iron core structure |
| CN201877262U (en) * | 2010-09-01 | 2011-06-22 | 展尉有限公司 | Transformer |
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