CN102208241B - A kind of combination center pillar inductor - Google Patents

A kind of combination center pillar inductor Download PDF

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Publication number
CN102208241B
CN102208241B CN201110032552.7A CN201110032552A CN102208241B CN 102208241 B CN102208241 B CN 102208241B CN 201110032552 A CN201110032552 A CN 201110032552A CN 102208241 B CN102208241 B CN 102208241B
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magnet
arm
center pillar
folding arm
straight
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CN102208241A (en
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黄思忠
林金城
陈限育
徐晓辉
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QINGLIU COUNTY XINCI COIL PRODUCTS CO Ltd
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QINGLIU COUNTY XINCI COIL PRODUCTS CO Ltd
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Abstract

The present invention relates to a kind of combination center pillar inductor, comprise closed magnetic loop magnetic core stack, skeleton and coil, described closed magnetic loop magnetic core stack is made up of a combination center pillar and two side column magnets, and described combination center pillar supports pad magnet by a card shelves magnet and an I font and forms; Each coil winding axle of skeleton is wound around respectively one group of coil is set, the winding direction of two groups of adjacent coils is contrary, card shelves magnet is placed in the hollow hole of skeleton, and then support pad magnet is inserted hollow hole, in the two ends making the end folding arm of card shelves magnet and middle folding arm be stuck in hollow hole and transmission, two sides that the export-oriented end face of two side column magnet end folding arms and middle folding arm is affixed to combination center pillar respectively form at least two inductance unit.The invention has the beneficial effects as follows: the present invention can reduce the height of coil rack effectively, effectively can improve the excitation angle of magnetic loop, improve magnetic structure.

Description

A kind of combination center pillar inductor
Technical field
The present invention relates to inductor, particularly relate to a kind of combination center pillar inductor, can be widely used in the electronic circuit of various electronic apparatus.
Background technology
Traditional inductance component is generally made up of around upper enamelled wire EE type magnetic core or EI type magnetic core line of engagement coil.For preventing magnetic saturation phenomenon from occurring, common way adopts the method for grinding magnetic core middle post to arrange magnetic air gap, and air gap is in the Xian Bao center of inductor.Owing to there is dispersing flux near magnetic air gap, dispersing flux makes the coiler part near air gap lose the transformation of " electricity-magnetic ", the A of magnetic core lvalue reduces, and the coil sections near magnetic air gap only plays filling effect.The larger dispersing flux of air gap amount is larger, and the coil of invalid filling is also more, and the magnetic line of force passes perpendicularly through line bag simultaneously, causes certain power loss.Above-mentioned reason causes device self copper resistance and copper loss to increase, and the power consumption of device is raised, waste electric energy and copper material, reduces the useful life of inductance component.On the circuit of some electronic apparatuss, need two or more inductor to connect and use, the way in past is connected with multiple independently inductor, and result had both added inductance area occupied in circuit, turn increased the loss of production cost and circuit.
Summary of the invention
The object of this invention is to provide a kind of combination center pillar inductor significantly can saved copper material, improve quality factor and increase excitation angle.
Technical scheme of the present invention is achieved in that
A kind of combination center pillar inductor, comprise closed magnetic loop magnetic core stack, skeleton and coil, described closed magnetic loop magnetic core stack is made up of a combination center pillar and two side column magnets; It is characterized in that, described combination center pillar supports pad magnet by a card shelves magnet and an I font and forms; Described card shelves magnet is provided with a straight-arm, and be respectively provided with an end folding arm at straight-arm two ends, the straight-arm between two end folding arms is at least provided with a middle folding arm, and two ends folding arm and middle folding arm are positioned at the same side of straight-arm; Described side column magnet is also provided with end folding arm and middle folding arm; Described skeleton is at least provided with two coil winding axles, and be provided with transmission between adjacent two coil winding axles, hollow hole is positioned at the axial centre position of coil winding axle, and all coil winding axles are on same axis; Each coil winding axle of skeleton is wound around respectively one group of coil is set, the winding direction of two groups of adjacent coils is contrary, card shelves magnet is placed in the hollow hole of skeleton, and then support pad magnet is inserted hollow hole, in the two ends making the end folding arm of card shelves magnet and middle folding arm be stuck in hollow hole and transmission, and making support pad magnet and card shelves magnet closely fit together to be formed and combine center pillar, two sides that the export-oriented end face of two side column magnet end folding arms and middle folding arm is affixed to combination center pillar respectively form at least two inductance unit; Magnetic air gap is provided with between the joint of described side column magnet and combination center pillar.
Described side column magnet is provided with a straight-arm, an end folding arm is respectively provided with at straight-arm two ends, straight-arm between two end folding arms is at least provided with a middle folding arm, and two ends folding arm and middle folding arm are positioned at the same side of straight-arm, and the middle folding arm number of side column magnet is equal with the middle folding arm number of card shelves magnet.
Each coil winding axle two ends of described skeleton are respectively equipped with a coil baffle plate, are respectively equipped with base plate in the same side of each coil baffle plate, and the coil baffle plate between two adjacent coil winding axles shares same base plate.
A kind of combination center pillar inductor, comprise closed magnetic loop magnetic core stack, skeleton and coil, described closed magnetic loop magnetic core stack is made up of a combination center pillar and two side column magnets; It is characterized in that, described combination center pillar supports pad magnet by a card shelves magnet and an I font and forms; Described card shelves magnet is provided with a straight-arm, and be respectively provided with an end folding arm at straight-arm two ends, two ends folding arm is positioned at the same side of straight-arm, overall in U-shaped; Described side column magnet is provided with a straight-arm, and be also respectively equipped with an end folding arm at straight-arm two ends, two ends folding arm is positioned at the same side of straight-arm, overall in U-shaped; Described skeleton is provided with a coil winding axle, and hollow hole is positioned at the axial centre position of coil winding axle; Described coil winding is arranged on the coil winding axle of skeleton, card shelves magnet is placed in the hollow hole of skeleton, and then support pad magnet is inserted hollow hole, make two of U-shaped card shelves magnet two ends of holding folding arm to be stuck in hollow hole, and make card shelves magnet pad magnet with support closely to fit together to be formed and combine center pillar, the export-oriented end face of two U-shaped side column magnets is affixed to two sides of combining center pillar respectively and forms an inductance unit; Magnetic air gap is provided with between the joint of described side column magnet and combination center pillar.
The side of described skeleton hollow hole is provided with air gap media slot, and the same side of described coil baffle plate is provided with base plate.
The invention has the beneficial effects as follows:
1. center pillar of the present invention have employed combination magnet, effectively can reduce the height of coil rack, simultaneously because the card shelves magnet in combination center pillar is provided with folding arm, after padding magnet and side column magnet combination with support, effectively can improve the excitation angle of magnetic loop, improve magnetic structure.
2., compared with the inductance component of traditional employing EE type or EI type magnetic core, because the present invention changes single magnetic air gap structure of traditional devices, have employed the position more reasonably magnetic structure of magnetic air gap.Such magnetic structure can make magnetic pressure be evenly distributed, and dispersing flux reduces, and dispersing flux reduces the impact of coil, and the induction factor of magnetic core increases, thus reduces coil turn, saves copper material;
3. inductance component air gap of the present invention is away from line bag, effectively reduces the impact of dispersing flux, reduces the power loss of device, not only saves energy but also extend useful life of product.
4., when the present invention adopts Multiple coil, adjacent winding coil is around to contrary, that wire circle is identical structure improves magnetic core utilance, and the application that particularly special skeleton structure is beneficial to inductance component is very much installed, and decreases the installation and use cost of user.
Below in conjunction with drawings and Examples, the present invention is described in detail.
Accompanying drawing explanation
Fig. 1 is the structure chart of two inductance unit combination center pillar inductor;
Fig. 2 is the magnetic circuit schematic diagram of two inductance unit combination center pillar inductor;
Fig. 3 is the combination center pillar exploded view of two inductance unit combination center pillar inductor;
Fig. 4 is the combination center pillar inductor part skeleton structure diagram of two inductance unit;
Fig. 5 is the combination center pillar schematic diagram of embodiment four;
Fig. 6 is the structure chart of three inductance unit combination center pillar inductors;
Fig. 7 is the structure chart of single inductance unit combination center pillar inductor;
Fig. 8 is the magnetic circuit schematic diagram of single inductance unit combination center pillar inductor;
Fig. 9 is the combination center pillar schematic diagram of single inductance unit combination center pillar inductor;
Figure 10 is the combination center pillar inductor part skeleton structure diagram of single inductance unit;
Embodiment
Embodiment one
A kind of combination center pillar inductor embodiment, see Fig. 1 ~ Fig. 4, comprise closed magnetic loop magnetic core stack 1, skeleton 2 and coil 3, described closed magnetic loop magnetic core stack is made up of a combination center pillar and two side column magnet 1-1; It is characterized in that, described combination center pillar supports pad magnet 1-3 by an a card shelves magnet 1-2 and I font and forms; Described card shelves magnet is provided with a straight-arm 1-2-1, and be respectively provided with an end folding arm 1-2-2 at straight-arm two ends, the straight-arm between two end folding arms is at least provided with a middle folding arm 1-2-3, and two ends folding arm and middle folding arm are positioned at the same side of straight-arm; Described side column magnet 1-1 is also provided with end folding arm and middle folding arm; Described skeleton is at least provided with two coil winding axle 2-1, and be provided with transmission 2-6 between adjacent two coil winding axles, hollow hole 2-4 is positioned at the axial centre position of coil winding axle, and all coil winding axles are on same axis; Each coil winding axle of skeleton is wound around respectively one group of coil is set, the winding direction of two groups of adjacent coils is contrary, card shelves magnet is placed in the hollow hole of skeleton, and then support pad magnet is inserted hollow hole, in the two ends making the folding arm of card shelves magnet be stuck in hollow hole and transmission, and making support pad magnet and card shelves magnet closely fit together to be formed and combine center pillar, two sides that the export-oriented end face of two side column magnet end folding arms and middle folding arm is affixed to combination center pillar respectively form at least two inductance unit; Magnetic air gap is provided with between the joint of described side column magnet and combination center pillar.
In the present embodiment, described card shelves magnet is provided with a middle folding arm 1-2-3, overall in E font; Described side column magnet is provided with a straight-arm 1-1-1, an end folding arm 1-1-2 is respectively provided with at straight-arm two ends, straight-arm between two end folding arms is provided with a middle folding arm 1-1-3, two ends folding arm and middle folding arm are positioned at the same side of straight-arm, entirety is also in E font, and the middle folding arm number of side column magnet is equal with the middle folding arm number of card shelves magnet.
Described skeleton is provided with two coil winding axle 2-1, coil winding axle two ends are respectively equipped with a coil baffle plate 2-2, transmission 2-6 is provided with between two coil winding axles, base plate 2-3 is respectively equipped with in the same side of each coil baffle plate, coil baffle plate between two adjacent coil winding axles shares same base plate, is respectively equipped with an air gap media slot 2-5 in two sides of hollow hole 2-4.
Two coil winding axles of described skeleton are wound around respectively and arrange one group of coil, the winding direction of two groups of coils is contrary, and wherein the tail end of one group of coil connects the head end of another group coil, and a pair head end in addition and tail end are as circuit access point.Define two inductance unit in the present embodiment, two inductance unit are cascaded structure.
Be provided with air gap medium 4 in described magnetic air gap, megohmite insulant that air gap medium can adopt PET equal thickness consistency good makes, so that magnetic circuit air gap amount preferably.
When assembling is of the present invention, can first air gap medium be inserted in media slot, and then two the sides export-oriented end face of two E font side column magnet end folding arms and middle folding arm being affixed to respectively combination center pillar form two inductance unit, can accurately magnetic circuit air gap amount by padding air gap medium processed in magnetic air gap, reduce the deviation of inductance value of the present invention.Closely wrap up at the outside insulating tape of closed magnetic loop magnet, make magnetic loop magnet, combine closely between skeleton and air gap medium, firmly.
In the present embodiment, the method of available grinding, the length of folding arm in side column magnet is made to be less than the length of end folding arm, make the magnetic air gap amount arranged between the end folding arm of side column magnet and combination center pillar side, be less than the magnetic air gap amount arranged between the middle folding arm of side column magnet and combination center pillar side, leakage flux of the present invention can be reduced, improve Electro Magnetic Compatibility.
Between side column magnet and the joint of center pillar magnet outside coil, magnetic air gap is set, make magnetic air gap distance coil comparatively far away, and dispersing flux is more intensively present near magnetic air gap.Therefore, such magnetic structure, can reduce because dispersing flux is to the power loss caused by the effect of coil, can reduce the number of turn of coil simultaneously, reaches the object of saving copper material.
Because the present invention adopts the structure of combination center pillar, because card shelves magnet is provided with folding arm, the excitation angle of magnetic circuit effectively can be increased; In an assembling process, because the hollow hole of skeleton successively can be inserted successively, therefore, the difficulty of winding around can't be increased.
Two groups of coils adopt the identical number of turns, are that magnetic and copper product use the optimized design economized most.
Embodiment two
A kind of combination center pillar inductor Another Application embodiment, see embodiment one, be with the difference of embodiment one, air gap media slot is not established at the hollow hole edge of the present embodiment skeleton, directly the end face of side column magnet end folding arm is attached on the side surface of combination center pillar during assembling, magnetic air gap is concentrated between folding arm and combination center pillar side, can make the leakage flux of the present embodiment drop to minimum value, to obtain best Electro Magnetic Compatibility in side column magnet.
Embodiment three
A kind of combination center pillar inductor Another Application embodiment, see embodiment one, be with the difference of embodiment one, head end and the tail end of two coils are drawn respectively, form four circuit access points.
The present embodiment can be used as common mode differential mode integrated inductor in circuit and uses.
Embodiment four
A kind of combination center pillar inductor Another Application embodiment, see Fig. 5 and embodiment one, be with the difference of embodiment one, a regulating tank 1-3-1 is respectively equipped with in two sides of I font support pad magnet, two regulating tanks are equal with the thickness b of card shelves magnet end folding arm to the distance a of support pad magnet end face, the upper surface 1-3-2 of support pad magnet is with the gradient, and the lower surface of card shelves magnet is also with the gradient, and two gradients are equal.
Skeleton hollow hole has certain tolerance, when assembling the present embodiment, when being with acclive support pad magnet to insert hollow hole, combination center pillar can be made to coordinate closely with the hollow hole of skeleton, simultaneously because card shelves magnet rises by the magnet extruding of support pad, the contact-making surface combining center pillar and side column magnet must be made to increase, inductance value is increased, but due to the regulating tank that is provided with of support pad magnet along with the extruding of card shelves magnet has been partially pushed in magnetic air gap, increase magnetic air gap amount, thus automatically adjusting inductance, make it to decline, thus assembling of the present invention can be made tight, inductance value consistency of the present invention can be made again good.
Embodiment five
A kind of combination center pillar inductor Another Application embodiment, see Fig. 6 and embodiment one, be with the difference of embodiment one, described side column magnet is provided with two middle folding arms, and described card shelves magnet is provided with two middle folding arms, and described skeleton is provided with three coil winding axles, three coil winding axles of skeleton are wound around respectively one group of coil is set, the winding direction of two adjacent windings is contrary, and define three inductance unit in the present embodiment, three inductance unit are cascaded structure.The present invention can also increase the number arranging inductance unit on the basis of embodiment five, and included inductance unit number can be arranged according to actual needs.
Embodiment six
A kind of combination center pillar inductor embodiment, see Fig. 7 ~ Figure 10 and embodiment one, comprise closed magnetic loop magnetic core stack 1, skeleton 2 and coil 3, described closed magnetic loop magnetic core stack is made up of a combination center pillar and two side column magnet 1-1; It is characterized in that, described combination center pillar supports pad magnet 1-3 by an a card shelves magnet 1-2 and I font and forms; Described card shelves magnet is provided with a straight-arm 1-2-1, and be respectively provided with an end folding arm 1-2-2 at straight-arm two ends, two ends folding arm is positioned at the same side of straight-arm, overall in U-shaped; Described side column magnet is provided with a straight-arm 1-1-1, and be also respectively equipped with an end folding arm 1-1-2 at straight-arm two ends, two ends folding arm is positioned at the same side of straight-arm, overall in U-shaped; Described skeleton is provided with a coil winding axle 2-1, and hollow hole 2-5 is positioned at the axial centre position of coil winding axle; Described coil winding is arranged on the coil winding axle of skeleton, card shelves magnet is placed in the hollow hole of skeleton, and then support pad magnet is inserted hollow hole, make two of U-shaped card shelves magnet two ends of holding folding arm to be stuck in hollow hole, and make card shelves magnet pad magnet with support closely to fit together to be formed and combine center pillar, the export-oriented end face of two U-shaped side column magnets is affixed to two sides of combining center pillar respectively and forms an inductance unit; Magnetic air gap is provided with between the joint of described side column magnet and combination center pillar.
In the present embodiment, the coil winding axle 2-1 two ends of described skeleton are respectively equipped with a coil baffle plate 2-2; Be provided with base plate 2-3 in the same side of two coil baffle plates, arranging base plate can increase the present invention's welding steadiness on circuit boards; A media slot 2-5 is respectively equipped with in the both sides of hollow hole 2-4.
Be provided with air gap medium 4 in described magnetic air gap, air gap medium can adopt the good megohmite insulant of PET equal thickness consistency to make, so that magnetic circuit air gap amount preferably.
When assembling is of the present invention, can first air gap medium be inserted in media slot, and then two the sides export-oriented end face body of two U-shaped side column magnetic end folding arms being affixed to respectively combination center pillar form inductance unit, can accurately magnetic circuit air gap amount by padding air gap medium processed in magnetic air gap, reduce the deviation of inductance value of the present invention.Closely wrap up at the outside insulating tape of closed magnetic loop magnet, make magnetic loop magnet, combine between skeleton and air gap medium tight, firm.
Between side column magnet and the joint of center pillar magnet outside coil, magnetic air gap is set, make magnetic air gap distance coil comparatively far away, and dispersing flux is more intensively present near magnetic air gap.Therefore, such magnetic structure, can reduce because dispersing flux is to the power loss caused by the effect of coil, can reduce the number of turn of coil simultaneously, reaches the object of saving copper material.
Because the present invention adopts the structure of combination center pillar, because card shelves magnet is provided with folding arm, the excitation angle of magnetic circuit effectively can be increased; In an assembling process, because the hollow hole of skeleton successively can be inserted successively, therefore, the difficulty of winding around can't be increased.
Embodiment seven
A kind of combination center pillar inductor Another Application embodiment, see embodiment six and embodiment four, the combination center pillar of the present embodiment and the difference of embodiment four are: card shelves magnet and side column magnet do not establish middle folding arm, and entirety is all U-shaped.

Claims (10)

1. combine a center pillar inductor, comprise closed magnetic loop magnetic core stack, skeleton and coil, described closed magnetic loop magnetic core stack is made up of a combination center pillar and two side column magnets; It is characterized in that, described combination center pillar supports pad magnet by a card shelves magnet and an I font and forms; Described card shelves magnet is provided with a straight-arm, and be respectively provided with an end folding arm at straight-arm two ends, the straight-arm between two end folding arms is at least provided with a middle folding arm, and two ends folding arm and middle folding arm are positioned at the same side of straight-arm; Described side column magnet is also provided with end folding arm and middle folding arm; Described skeleton is at least provided with two coil winding axles, and be provided with transmission between adjacent two coil winding axles, hollow hole is positioned at the axial centre position of coil winding axle, and all coil winding axles are on same axis; Each coil winding axle of skeleton is wound around respectively one group of coil is set, the winding direction of two groups of adjacent coils is contrary, card shelves magnet is placed in the hollow hole of skeleton, and then support pad magnet is inserted hollow hole, in the two ends making the end folding arm of card shelves magnet and middle folding arm be stuck in hollow hole and transmission, and making support pad magnet and card shelves magnet closely fit together to be formed and combine center pillar, two sides that the export-oriented end face of two side column magnet end folding arms and middle folding arm is affixed to combination center pillar respectively form at least two inductance unit; Magnetic air gap is provided with between the joint of described side column magnet and combination center pillar.
2. one combination center pillar inductor according to claim 1, it is characterized in that, the number of turns of described each group of coil is equal, and each coil winding axle two ends of described skeleton are respectively equipped with a coil baffle plate.
3. one combination center pillar inductor according to claim 2, it is characterized in that, described side column magnet is provided with a straight-arm, an end folding arm is respectively provided with at straight-arm two ends, straight-arm between two end folding arms is at least provided with a middle folding arm, two ends folding arm and middle folding arm are positioned at the same side of straight-arm, and the middle folding arm number of side column magnet is equal with the middle folding arm number of card shelves magnet.
4. one combination center pillar inductor according to claim 3, it is characterized in that, be respectively equipped with base plate in the same side of each coil baffle plate, the coil baffle plate between two adjacent coil winding axles shares same base plate, is respectively provided with an air gap media slot in two sides of hollow hole.
5. one combination center pillar inductor according to claim 4, it is characterized in that, two sides of described support pad magnet are respectively equipped with a regulating tank, two regulating tanks are equal with the thickness b of card shelves magnet end folding arm to the distance a of support pad magnet end face, the upper surface of support pad magnet is with the gradient, the lower surface of card shelves magnet is also with the gradient, and two gradients are equal.
6. one combination center pillar inductor according to claim 4, it is characterized in that, described card shelves magnet is E font, and described side column magnet is also E font, and described skeleton is provided with two coil winding axles.
7. one combination center pillar inductor according to claim 4, it is characterized in that, the straight-arm of described card shelves magnet is provided with two middle folding arms, the straight-arm of described side column magnet is also provided with two middle folding arms.
8. one combination center pillar inductor according to claim 4, is characterized in that, be provided with air gap medium in described magnetic air gap.
9. combine a center pillar inductor, comprise closed magnetic loop magnetic core stack, skeleton and coil, described closed magnetic loop magnetic core stack is made up of a combination center pillar and two side column magnets; It is characterized in that, described combination center pillar supports pad magnet by a card shelves magnet and an I font and forms; Described card shelves magnet is provided with a straight-arm, and be respectively provided with an end folding arm at straight-arm two ends, two ends folding arm is positioned at the same side of straight-arm, overall in U-shaped; Described side column magnet is provided with a straight-arm, and be also respectively equipped with an end folding arm at straight-arm two ends, two ends folding arm is positioned at the same side of straight-arm, overall in U-shaped; Described skeleton is provided with a coil winding axle, and hollow hole is positioned at the axial centre position of coil winding axle; Described coil winding is arranged on the coil winding axle of skeleton, card shelves magnet is placed in the hollow hole of skeleton, and then support pad magnet is inserted hollow hole, make two of U-shaped card shelves magnet two ends of holding folding arm to be stuck in hollow hole, and make card shelves magnet pad magnet with support closely to fit together to be formed and combine center pillar, the export-oriented end face of two U-shaped side column magnets is affixed to two sides of combining center pillar respectively and forms an inductance unit; Magnetic air gap is provided with between the joint of described side column magnet and combination center pillar.
10. one combination center pillar inductor according to claim 9, it is characterized in that, two sides of described support pad magnet are respectively equipped with a regulating tank, two regulating tanks are equal with the thickness b of card shelves magnet end folding arm to the distance a of support pad magnet end face, the upper surface of support pad magnet is with the gradient, the lower surface of card shelves magnet is also with the gradient, and two gradients are equal.
CN201110032552.7A 2011-01-25 2011-01-25 A kind of combination center pillar inductor Active CN102208241B (en)

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CN105719825A (en) * 2016-01-22 2016-06-29 深圳顺络电子股份有限公司 Inductor and fabrication method thereof
CN110379599B (en) * 2019-06-05 2021-11-19 华为数字能源技术有限公司 Integrated inductor and electronic device

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