CN202003795U - Inductor of combination center post - Google Patents
Inductor of combination center post Download PDFInfo
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- CN202003795U CN202003795U CN2011200323211U CN201120032321U CN202003795U CN 202003795 U CN202003795 U CN 202003795U CN 2011200323211 U CN2011200323211 U CN 2011200323211U CN 201120032321 U CN201120032321 U CN 201120032321U CN 202003795 U CN202003795 U CN 202003795U
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Abstract
The utility model relates to an inductor of a combination center post, which comprises a magnetic core stack of a close magnetic return path, a framework and coils, wherein the magnetic core stack of the close magnetic return path consists of a combination center post and two side post magnets, and the combination center post consists of a block magnet and an I-shaped support and cushion magnet; and a group of coils is respectively wound on a winding shaft of each coil of the framework, the adjacent two groups of coils are wound oppositely, when the block magnet is placed in the hollow hole of the framework, the support and cushion magnet is then inserted in the hollow hole, so the folding arm of the block magnet is clamped above the two ends of the hollow hole and the through air, and the external end surfaces of the folding arms of the two side post magnets are attached to the two side surfaces of the center post to form at least two inductance units. The inductor of the combination center post provided by the utility model has the beneficial effects that: the height of the framework of the coils can be effectively reduced, the excitation angle of the magnetic return path can be effectively increased, and the magnetic circuit structure is improved.
Description
Technical field
The utility model relates to inductor, relates in particular to a kind of combination center pillar inductor, can be widely used in the electronic circuit of various electronic apparatuss.
Background technology
Traditional inductance component generally cooperates bobbin to form around last enamelled wire by EE type magnetic core or EI type magnetic core.For preventing that the magnetic saturation phenomenon from taking place, common way is to adopt the method for grinding the magnetic core center pillar that magnetic air gap is set, and air gap is in the line bag center of inductor.Owing near magnetic air gap, exist dispersing flux, dispersing flux to make near the air gap coiler part lose the transformation of " electricity-magnetic ", the A of magnetic core
LValue reduces, and near the coil sections the magnetic air gap only plays filling effect.The big more dispersing flux of air gap amount is just big more, and the coil of invalid filling is also just many more, and the magnetic line of force vertically passes the line bag simultaneously, causes the certain power loss.Above-mentioned reason causes device self copper resistance and copper loss to increase, and the power consumption of device is raise, waste electric energy and copper material, the useful life of reducing inductance component.On the circuit of some electronic apparatuss, need two or more inductor series connection to use, the way in past is to connect with a plurality of independently inductors, the result had both increased inductance area occupied in circuit, had increased the loss of production cost and circuit again.
Summary of the invention
The purpose of this utility model provides a kind of combination center pillar inductor that can significantly save copper material, improve quality factor and increase excitation angle.
The technical solution of the utility model is achieved in that
A kind of combination center pillar inductor comprises closed magnetic loop magnetic core stack, skeleton and coil, and 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 is made up of a card shelves magnet and an I font support pad magnet, described card shelves magnet is provided with a straight-arm, be provided with two end folding arms at the straight-arm two ends, on the straight-arm between two end folding arms a middle folding arm is set at least, all folding arms are positioned at the same side of straight-arm; Described side column magnet is provided with folding arm; Described skeleton is provided with two coils at least and twines axle, and adjacent two coils twine between the axle and are provided with sky, and hollow hole is positioned at the axial centre position that coil twines axle, and all coils twine axle on same axis; On each coil winding axle of skeleton, twine respectively one group of coil is set, the winding direction of two groups of adjacent coils is opposite, card shelves magnet is placed the hollow hole of skeleton, and then will support the pad magnet and insert hollow hole, the folding arm of card shelves magnet is stuck on the two ends and saturating sky of hollow hole, and support pad magnet is closely fit together with a card shelves magnet form the combination center pillar, two sides that the export-oriented end face of two side column magnet folding arms is affixed to the combination center pillar form at least two inductance unit; Be provided with magnetic air gap between the joint of described side column magnet and combination center pillar.
Described side column magnet is provided with a straight-arm, is provided with two end folding arms at the straight-arm two ends, is provided with a middle folding arm at least on the straight-arm between two end folding arms, and folding arm is positioned at the same side of straight-arm, and the folding arm number of side column magnet equates with the folding arm number of card shelves magnet.
Each coil of described skeleton twines the axle two ends and is respectively equipped with two coil baffle plates, is respectively equipped with base plate in the same side of each coil baffle plate, and two adjacent coils twine the shared same base plate of coil baffle plate between the axle.
A kind of combination center pillar inductor comprises closed magnetic loop magnetic core stack, skeleton and coil, and 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 is made up of a card shelves magnet and an I font support pad magnet; Described card shelves magnet is provided with a straight-arm, is provided with two end folding arms at the straight-arm two ends, and the two ends folding arm is positioned at the same side of straight-arm, and integral body is the U font; Described side column magnet is provided with a straight-arm, is provided with two end folding arms at the straight-arm two ends, and the two ends folding arm is positioned at the same side of straight-arm, and integral body is the U font; Described skeleton is provided with a coil and twines axle, and hollow hole is positioned at the axial centre position that coil twines axle; Described coil twines the coil that is arranged on skeleton and twines on the axle, card shelves magnet is placed the hollow hole of skeleton, and then will support the pad magnet and insert hollow hole, make two two ends of holding folding arms to be stuck in hollow hole of U font card shelves magnet, and card shelves magnet is closely fit together with support pad magnet form the combination center pillar, two sides that the export-oriented end face of two U font side column magnets is affixed to the combination center pillar form an inductance unit; Be provided with magnetic air gap between the joint of described side column magnet and combination center pillar.
The both sides of described skeleton hollow hole are provided with the air gap media slot, and the same side of described coil baffle plate is provided with base plate.
The beneficial effects of the utility model are:
1. center pillar of the present utility model has adopted combination magnet, can reduce the height of coil rack effectively, simultaneously because the card shelves magnet in the combination center pillar is provided with folding arm, after filling up magnet and side column magnet combination with support, can improve the excitation angle of magnetic loop effectively, improve magnetic structure.
2. compare with the traditional employing EE type or the inductance component of EI type magnetic core, because the utility model has changed single magnetic air gap structure of traditional devices, the position of having adopted magnetic air gap is magnetic structure more reasonably.Such magnetic structure can make magnetic pressure be evenly distributed, and dispersing flux reduces, and dispersing flux reduces the influence of coil, and the induction factor of magnetic core increases, thereby reduces coil turn, has saved copper material;
3. the utility model inductance component air gap has reduced the influence of dispersing flux effectively away from the line bag, has reduced the power loss of device, not only saves energy but also prolong useful life of product.
4. when the utility model adopted many windings, adjacent winding coil was around the utilance that has improved magnetic core to the structure opposite, that wire circle is identical, and particularly special skeleton structure is beneficial to the application of inductance component and installs very much, has reduced user's installation and use cost.
Below in conjunction with drawings and Examples the utility model is described in detail.
Description of drawings
Fig. 1 is the structure chart of two inductance unit combination center pillar inductors;
Fig. 2 is the magnetic circuit schematic diagram of two inductance unit combination center pillar inductors;
Fig. 3 is the combination center pillar exploded view of two inductance unit combination center pillar inductors;
Fig. 4 is the combination center pillar inductance component 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 inductor;
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 inductance component skeleton structure diagram of single inductance unit;
Embodiment
Embodiment one
A kind of combination center pillar inductor embodiment referring to Fig. 1～Fig. 4, comprises closed magnetic loop magnetic core stack 1, skeleton 2 and coil 3, and 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 is made up of a card shelves magnet 1-2 and an I font support pad magnet 1-3; Described card shelves magnet is provided with a straight-arm 1-2-1, is provided with two end folding arm 1-2-2 at the straight-arm two ends, on the straight-arm between two end folding arms a middle folding arm 1-2-3 is set at least, and all folding arms are positioned at the same side of straight-arm; Described side column magnet 1-1 is provided with folding arm; Described skeleton is provided with two coils at least and twines axle 2-1, and adjacent two coils twine between the axle and are provided with empty 2-6, and hollow hole 2-4 is positioned at the axial centre position that coil twines axle, and all coils twine axle on same axis; On each coil winding axle of skeleton, twine respectively one group of coil is set, the winding direction of two groups of adjacent coils is opposite, card shelves magnet is placed the hollow hole of skeleton, and then will support the pad magnet and insert hollow hole, the folding arm of card shelves magnet is stuck on the two ends and saturating sky of hollow hole, and support pad magnet is closely fit together with a card shelves magnet form the combination center pillar, two sides that the export-oriented end face of two side column magnet folding arms is affixed to the combination center pillar form at least two inductance unit; Be provided with magnetic air gap 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, and integral body is the E font; Described side column magnet is provided with a straight-arm 1-1-1, be provided with two end folding arm 1-1-2 at the straight-arm two ends, on the straight-arm between two end folding arms, be provided with a middle folding arm 1-1-3, folding arm is positioned at the same side of straight-arm, integral body also is the E font, and the folding arm number of side column magnet equates with the folding arm number of card shelves magnet.
Described skeleton is provided with two coils and twines axle 2-1, coil twines the axle two ends and is respectively equipped with two coil baffle plate 2-2, two coils twine between the axle and are provided with empty 2-6, be respectively equipped with base plate 2-3 in the same side of each coil baffle plate, two adjacent coils twine the shared same base plate of coil baffle plate between the axle, are respectively equipped with two air gap media slot 2-5 in two sides of hollow hole 2-4.
Two coils of described skeleton twine to twine respectively on the axle two groups of coils are set, and the winding direction of two groups of coils is opposite, and wherein the tail end of one group of coil connects the head end of another group coil, and a pair of head end in addition and tail end are as circuit access point.Formed two inductance unit in the present embodiment, two inductance unit are cascaded structure.
Be provided with air gap medium 4 in the described magnetic air gap, the air gap medium can adopt the megohmite insulant of PET equal thickness high conformity to make, so that control the magnetic air gap amount preferably.
When assembling the utility model, can earlier the air gap medium be inserted in the media slot, and then two sides that the export-oriented end face of two E font side column magnet folding arms is affixed to the combination center pillar are formed two inductance unit, can accurately control the magnetic air gap amount by pad system air gap medium in magnetic air gap, reduce the deviation of the utility model inductance value.Closely wrap up with insulating tape in the outside at the closed magnetic loop magnet, makes between magnetic loop magnet, skeleton and the air gap medium in conjunction with getting closely, firmly.
In the present embodiment, available abrasive method, make the length of the length of folding arm in the side column magnet less than the end folding arm, make the magnetic air gap amount that is provided with between the end folding arm of side column magnet and the combination center pillar side, less than the magnetic air gap amount that is provided with between the middle folding arm of side column magnet and the combination center pillar side, can reduce leakage flux of the present utility model, improve Electro Magnetic Compatibility.
Side column magnet and center pillar magnet are provided with magnetic air gap between the joint in the coil outside, make magnetic air gap far away apart from coil, and dispersing flux is present near the magnetic air gap than the concentrated area.Therefore, such magnetic structure can reduce to reach the purpose of saving copper material because dispersing flux to the caused power loss of the effect of coil, can reduce the number of turn of coil simultaneously.
Because the utility model adopts the structure of combination center pillar,, can increase the excitation angle of magnetic circuit effectively because card shelves magnet is provided with folding arm; In assembling process,, therefore, can't increase the difficulty of winding around because of can successively inserting the hollow hole of skeleton successively.
Two groups of coils adopt the identical number of turns, are that magnetic and copper product use the optimized design of economizing most.
Embodiment two
A kind of combination center pillar inductor Another Application embodiment, referring to embodiment one, be with the difference of embodiment one, do not establish the air gap media slot on the hollow hole edge of 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, make magnetic air gap concentrate between the middle folding arm and combination center pillar side of side column magnet, can make the leakage flux of present embodiment drop to minimum value, to obtain the compatible performance of best electromagnetic.
Embodiment three
A kind of combination center pillar inductor Another Application embodiment referring to embodiment one, is that with the difference of embodiment one head end and the tail end of two coils are drawn respectively, forms four circuit access points.
Present embodiment can be used as common mode differential mode integrated inductor and uses in circuit.
Embodiment four
A kind of combination center pillar inductor Another Application embodiment, referring to Fig. 5 and embodiment one, be with the difference of embodiment one, two sides at I font support pad magnet are respectively equipped with two regulating tank 1-3-1, two regulating tanks equate with the thickness b of card shelves magnet end folding arm apart from a to support pad magnet end face, the upper surface 1-3-2 of support pad magnet has the gradient, and the lower surface of card shelves magnet also has the gradient, and two gradients equate.
The skeleton hollow hole has certain tolerance, when the assembling present embodiment, when the support pad magnet that has the gradient inserts hollow hole, the combination center pillar is cooperated closely with the hollow hole of skeleton, owing to being subjected to the extruding of support pad magnet, card shelves magnet rises simultaneously, must make the contact-making surface of combination center pillar and side column magnet increase, make inductance value increase, but because the regulating tank that support pad magnet is provided with is along with the extruding that blocks the shelves magnet has partly been pushed in the magnetic air gap, increased the magnetic air gap amount, thereby automatically regulated inductance value, made it to descend, thereby can make that assembling of the present utility model is tight, can make inductance value high conformity of the present utility model again.
Embodiment five
A kind of combination center pillar inductor Another Application embodiment, referring to 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 coils and twines axle, on three coils winding axles of skeleton, twine respectively three groups of coils are set, the winding direction of two adjacent lines circles is opposite, has formed three inductance unit in the present embodiment, and three inductance unit are cascaded structure.The utility model can also increase the number that inductance unit is set on the basis of embodiment five, included inductance unit number can be provided with according to actual needs.
Embodiment six
A kind of combination center pillar inductor embodiment referring to Fig. 7～Figure 10 and embodiment one, comprises closed magnetic loop magnetic core stack 1, skeleton 2 and coil 3, and 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 is made up of a card shelves magnet 1-2 and an I font support pad magnet 1-3; Described card shelves magnet is provided with a straight-arm 1-2-1, is provided with two end folding arm 1-2-2 at the straight-arm two ends, and the two ends folding arm is positioned at the same side of straight-arm, and integral body is the U font; Described side column magnet is provided with a straight-arm 1-1-1, is provided with two end folding arm 1-1-2 at the straight-arm two ends, and the two ends folding arm is positioned at the same side of straight-arm, and integral body is the U font; Described skeleton is provided with a coil and twines axle 2-1, and hollow hole 2-5 is positioned at the axial centre position that coil twines axle; Described coil twines the coil that is arranged on skeleton and twines on the axle, card shelves magnet is placed the hollow hole of skeleton, and then will support the pad magnet and insert hollow hole, make two two ends of holding folding arms to be stuck in hollow hole of U font card shelves magnet, and card shelves magnet is closely fit together with support pad magnet form the combination center pillar, two sides that the export-oriented end face of two U font side column magnets is affixed to the combination center pillar form an inductance unit; Be provided with magnetic air gap between the joint of described side column magnet and combination center pillar.
In the present embodiment, the coil of described skeleton twines axle 2-1 two ends and is respectively equipped with two coil baffle plate 2-2; Be provided with base plate 2-3 in the same side of two coil baffle plates, base plate is set can be increased the utility model and be welded on steadiness on the circuit board; Be respectively equipped with two media slot 2-5 in the both sides of hollow hole 2-4.
Be provided with air gap medium 4 in the described magnetic air gap, the air gap medium can adopt PET equal thickness consistency good insulation material to make, so that control the magnetic air gap amount preferably.
When assembling the utility model, can earlier the air gap medium be inserted in the media slot, and then the export-oriented end face of two U font side column magnetic end folding arms shown consideration for to two sides of combination center pillar form inductance unit, can accurately control the magnetic air gap amount by pad system air gap medium in magnetic air gap, reduce the deviation of the utility model inductance value.Closely wrap up with insulating tape in the outside at the closed magnetic loop magnet, make combination between magnetic loop magnet, skeleton and the air gap medium closely, firmly.
Side column magnet and center pillar magnet are provided with magnetic air gap between the joint in the coil outside, make magnetic air gap far away apart from coil, and dispersing flux is present near the magnetic air gap than the concentrated area.Therefore, such magnetic structure can reduce to reach the purpose of saving copper material because dispersing flux to the caused power loss of the effect of coil, can reduce the number of turn of coil simultaneously.
Because the utility model adopts the structure of combination center pillar,, can increase the excitation angle of magnetic circuit effectively because card shelves magnet is provided with folding arm; In assembling process,, therefore, can't increase the difficulty of winding around because of can successively inserting the hollow hole of skeleton successively.
Embodiment seven
A kind of combination center pillar inductor Another Application embodiment, referring to embodiment six and embodiment four, the combination center pillar of present embodiment and the difference of embodiment four are: card shelves magnet is not established middle folding arm, and integral body is the U font, and it is identical with embodiment six to remove the extra-stelar remainder of combination.
Claims (10)
1. a combination center pillar inductor comprises closed magnetic loop magnetic core stack, skeleton and coil, and 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 is made up of a card shelves magnet and an I font support pad magnet, described card shelves magnet is provided with a straight-arm, be provided with two end folding arms at the straight-arm two ends, on the straight-arm between two end folding arms a middle folding arm is set at least, all folding arms are positioned at the same side of straight-arm; Described side column magnet is provided with folding arm; Described skeleton is provided with two coils at least and twines axle, and adjacent two coils twine between the axle and are provided with sky, and hollow hole is positioned at the axial centre position that coil twines axle, and all coils twine axle on same axis; On each coil winding axle of skeleton, twine respectively one group of coil is set, the winding direction of two groups of adjacent coils is opposite, card shelves magnet is placed the hollow hole of skeleton, and then will support the pad magnet and insert hollow hole, the folding arm of card shelves magnet is stuck on the two ends and saturating sky of hollow hole, and support pad magnet is closely fit together with a card shelves magnet form the combination center pillar, two sides that the export-oriented end face of two side column magnet folding arms is affixed to the combination center pillar form at least two inductance unit; Be provided with magnetic air gap between the joint of described side column magnet and combination center pillar.
2. a kind of combination center pillar inductor according to claim 1 is characterized in that, the described number of turns of respectively organizing coil equates that each coil of described skeleton twines the axle two ends and is respectively equipped with two coil baffle plates.
3. a kind of combination center pillar inductor according to claim 2, it is characterized in that, described side column magnet is provided with a straight-arm, be provided with two end folding arms at the straight-arm two ends, on the straight-arm between two end folding arms, be provided with a middle folding arm at least, folding arm is positioned at the same side of straight-arm, and the folding arm number of side column magnet equates with the folding arm number of card shelves magnet.
4. a kind of combination center pillar inductor according to claim 3, it is characterized in that, the same side at each coil baffle plate is respectively equipped with base plate, and two adjacent coils twine the shared same base plate of coil baffle plate between the axle, are respectively equipped with two air gap media slot in two sides of hollow hole.
5. a kind of combination center pillar inductor according to claim 4, it is characterized in that, two sides of described support pad magnet are respectively equipped with two regulating tanks, two regulating tanks equate with the thickness b of card shelves magnet end folding arm apart from a to support pad magnet end face, the upper surface of support pad magnet has the gradient, the lower surface of card shelves magnet also has the gradient, and two gradients equate.
6. a kind of combination center pillar inductor according to claim 4 is characterized in that, described card shelves magnet is the E font, and described side column magnet also is the E font, and described skeleton is provided with two coils and twines axle.
7. a kind of combination center pillar inductor according to claim 4 is characterized in that, the straight-arm of described card shelves magnet is provided with two middle folding arms, also is provided with two middle folding arms on the straight-arm of described side column magnet.
8. a kind of combination center pillar inductor according to claim 4 is characterized in that, is provided with the air gap medium in the described magnetic air gap.
9. a combination center pillar inductor comprises closed magnetic loop magnetic core stack, skeleton and coil, and 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 is made up of a card shelves magnet and an I font support pad magnet; Described card shelves magnet is provided with a straight-arm, is provided with two end folding arms at the straight-arm two ends, and the two ends folding arm is positioned at the same side of straight-arm, and integral body is the U font; Described side column magnet is provided with a straight-arm, is provided with two end folding arms at the straight-arm two ends, and the two ends folding arm is positioned at the same side of straight-arm, and integral body is the U font; Described skeleton is provided with a coil and twines axle, and hollow hole is positioned at the axial centre position that coil twines axle; Described coil twines the coil that is arranged on skeleton and twines on the axle, card shelves magnet is placed the hollow hole of skeleton, and then will support the pad magnet and insert hollow hole, make two two ends of holding folding arms to be stuck in hollow hole of U font card shelves magnet, and card shelves magnet is closely fit together with support pad magnet form the combination center pillar, two sides that the export-oriented end face of two U font side column magnets is affixed to the combination center pillar form an inductance unit; Be provided with magnetic air gap between the joint of described side column magnet and combination center pillar.
10. a kind of combination center pillar inductor according to claim 9, it is characterized in that, two sides of described support pad magnet are respectively equipped with two regulating tanks, two regulating tanks equate with the thickness b of card shelves magnet end folding arm apart from a to support pad magnet end face, the upper surface of support pad magnet has the gradient, the lower surface of card shelves magnet also has the gradient, and two gradients equate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200323211U CN202003795U (en) | 2011-01-25 | 2011-01-25 | Inductor of combination center post |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200323211U CN202003795U (en) | 2011-01-25 | 2011-01-25 | Inductor of combination center post |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202003795U true CN202003795U (en) | 2011-10-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200323211U Expired - Lifetime CN202003795U (en) | 2011-01-25 | 2011-01-25 | Inductor of combination center post |
Country Status (1)
| Country | Link |
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| CN (1) | CN202003795U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102208241A (en) * | 2011-01-25 | 2011-10-05 | 清流县鑫磁线圈制品有限公司 | Assembled center pillar inductor |
| CN107170547A (en) * | 2017-07-25 | 2017-09-15 | 郭良驹 | A kind of modular integrated shaping PFC induction structures |
-
2011
- 2011-01-25 CN CN2011200323211U patent/CN202003795U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102208241A (en) * | 2011-01-25 | 2011-10-05 | 清流县鑫磁线圈制品有限公司 | Assembled center pillar inductor |
| CN102208241B (en) * | 2011-01-25 | 2015-09-09 | 清流县鑫磁线圈制品有限公司 | A kind of combination center pillar inductor |
| CN107170547A (en) * | 2017-07-25 | 2017-09-15 | 郭良驹 | A kind of modular integrated shaping PFC induction structures |
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Granted publication date: 20111005 Effective date of abandoning: 20150909 |
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