CN201037851Y

CN201037851Y - Multi-polar power inductor

Info

Publication number: CN201037851Y
Application number: CNU2007201484765U
Authority: CN
Inventors: 张永祥
Original assignee: LINEARITY ELECTRONICS CO Ltd
Current assignee: LINEARITY ELECTRONICS CO Ltd
Priority date: 2007-06-05
Filing date: 2007-06-05
Publication date: 2008-03-19
Anticipated expiration: 2017-06-05

Abstract

The utility model relates to a multipolarity power sensor comprising a base seat and a coil assembly, wherein, the base seat is made of any conductive or non conductive material. Grooves are arranged on the base seat, and a plurality of through holes are arranged in the grooves. The coil assembly is made of copper, and consists of a plurality of U-shaped lead wires. When the two ends of the lead wires are threaded through two through holes between grooves, if the base seat is made of conductive material, the lead wires must be covered by an insulation layer, and the two ends of the wires threaded out of the base seat form electric pins. Two electric pins are covered by a tin layer which is utilized to electrically connect the power sensor with a circuit board of the applied electronic device.

Description

The power inductor of multipolarity

Technical field

The utility model relates to a kind of inductor, relates in particular to a kind of power inductor of multipolarity.

Background technology

Power inductor has been applied on the various products such as big electric current microprocessor, server, display card interface, multi-core processor, the Embedded computing machine of workstation (work station), industrial computing machine, mobile computer, small-sized communicating machine or direct current transducer at present.It can burning voltage and electric current output, to provide these electronic installations required power supply.

Because when early stage power inductor is applied in the power supply unit aspect, because of power inductor internal resistance height, so when flowing through, this power inductor easily produces high temperature and instability at big electric current (30～60 amperes big electric currents).For power inductor is not damaged because of producing high temperature, and can trouble-free operation, certainly will on interface end or feed end, increase radiator fan, or increase heating radiator around the power inductor, so that this power inductor is dispelled the heat, thereby the stable electrical sensibility reciprocal, reason high temperature does not cause saturated or works as machine and damage etc.

In order to solve the problem that early stage power inductor easily produces high temperature, the power inductor structure is designed to be made up of iron core and the coil that twines on this iron core.This power inductor is little because of volume, is big electric current low-loss impedance.When this power inductor is applied in the microprocessor of big electric current and workstation etc., when having big electric current to flow through (30～60 amperes big electric currents), just must be electrically connected with two to six power inductors on this microprocessor circuit plate, to disperse big electric current.Because each power inductor can bear 5～10 amperes electric current and flow through, allow this power inductor be difficult for heating, therefore the problem of hardware interface heat radiation can be solved, and too much heat abstractor must be do not added.And inductive magnetic circuit can excessively not be coupled.Because the employed quantity of power inductor of the low dc impedance of this big electric current is more, the usage space on the circuit board that easily accounts for has improved cost of manufacture.

So, problem for the power inductor that solves big electric current low-loss impedance, there is a kind of power inductor to be devised again, as shown in Figure 1, this power inductor is made up of first iron core 10, coil groups 20, insulation horse traction sheet (Mylay) 30 and second iron core 40, positive and negative have many group grooves 101 on first iron core 10, dispose coil groups 20 on the groove 101.Coil groups 20 is made up of a plurality of fixture type terminals 201, has dual U-shaped intermediate plate 20 11 on each terminal 201.Dual U-shaped intermediate plate 2,011 one ends link together by lamellar body 2012, with dual U-shaped anchor clamps 2011 clamping connections on many groups groove 101 that positive and negative have on first iron core 10.Dual U-shaped intermediate plate 2011 tops are provided with insulation horse traction sheet 30, dispose second iron core 40 again on insulation horse traction sheet 30, to constitute the power inductor of sheet.

When this sheet shape power inductor is applied on server or the microprocessor, if terminal 201 has six, when 30～60 amperes big electric currents flow through, terminal 201 can disperse big electric current, make each terminal 201 carrying 5～10 Ampere currents and reduce the high temperature that power inductor produces, and the usable floor area of the microprocessor circuit plate that also can not account for.But, this sheet power inductor is because complex structure, and second iron core 40 produces static because of environmental factor when assembling, when second iron core 40 to be ready being assembled in the insulating trip top, insulation horse traction sheet 30 is easily picked up by second iron core 40, and when causing second iron core 40 to produce deviation with 30 contrapositions of insulation horse traction sheet, the dawn is not caused the inconvenience in the assembling, easily causes the generation of unacceptable product yet.

The utility model content

Therefore, the utility model is because traditional shortcoming provides a kind of simple in structure, the power inductor that is easy to assemble.

For reaching above-mentioned purpose, multipolarity power inductor of the present utility model comprises: pedestal, and its top is provided with groove, is provided with a plurality of through holes in the described groove; Coil groups is made up of the lead of a plurality of U-shapeds, and the line segment that extend in described lead two bending places passes described through hole, and extends outside two electric pins that form of described through hole.

Compared with prior art, not only simple in structure according to the power inductor that the utility model provides, and be easy to assembling.

Description of drawings

Fig. 1 is the decomposing schematic representation of conventional power inductor;

Fig. 2 is the decomposing schematic representation of multipolarity power inductor of the present utility model;

Fig. 3 is the assembled state synoptic diagram of multipolarity power inductor of the present utility model;

Fig. 4 is the side cross-sectional schematic of multipolarity power inductor of the present utility model;

Fig. 5 is a multipolarity power inductor of the present utility model and the synoptic diagram that is electrically connected of circuit board;

Fig. 6 is the synoptic diagram of another embodiment of the present utility model;

Fig. 7 is the cross-sectional schematic of Fig. 6;

Fig. 8 is the synoptic diagram of an embodiment more of the present utility model;

Fig. 9 is the cross-sectional schematic of Fig. 8;

Figure 10 is the synoptic diagram of another embodiment of the present utility model;

Figure 11 is the synoptic diagram of an embodiment more again of the present utility model;

Figure 12 is the side cross-sectional schematic of Figure 11.

[primary clustering symbol description]

Prior art:

First iron core 10

Coil groups 20

Terminal 201

Intermediate plate 2011

Lamellar body 2012

Insulation horse traction sheet 30

Second iron core 40

The utility model:

Pedestal

1,3,5,7

Groove 11,31,51,71

Through

hole

12,32,52,91

Coil groups

2,4,6,8

Lead 21,41,61,81

Insulation course 22,62

Electric pin

23,23 ', 43,43 ', 63,63 '

Tin layer

24,24 ', 44,44 ', 64,64 '

Blocking part 45,45 '

Circuit board 9

Embodiment

Now in conjunction with the accompanying drawings technology contents of the present utility model is elaborated.

Fig. 2 is the decomposing schematic representation of multipolarity power inductor of the present utility model.As shown in the figure: multipolarity power inductor of the present utility model comprises: pedestal 1 and coil groups 2; Wherein:

The rectangular parallelepiped of pedestal 1 for making by any conductive material of MnZn (Manganese zinc), iron powder iron core (Iron powder core), alloy-iron core (Sendust core).Pedestal 1 top is provided with groove 11, the through hole 12 that is provided with a plurality of circles in the groove 11 and is arranged in a linear along the length of groove 11.

Coil groups 2 is a material with the copper metal of circle, and tailors into a plurality of U-shaped leads 21.Be coated with insulation course 22 on lead 21 skins, when lead 21 and two through hole 12 cross-under, insulation course 22 can prevent that lead 21 from contacting the formation short-circuit condition with two through hole 12 inwalls.The line segment integral coating that insulation course 22 extends lead 21 bending places, allow this line segment expose with form electric pin 23,23 ', again two electric pins 23,23 ' on cover one deck tin layer 24,24 ' (seeing also Fig. 4).Tin layer 24,24 ' be used to provide power inductor to be electrically connected with the circuit board (not shown).

Fig. 3 and 4 is respectively multipolarity power inductor combination of the present utility model and side cross-sectional schematic.As shown in the figure: when pedestal 1 of the present utility model and coil groups 2 windings, after the electric pin 23,23 of each lead 21 of coil groups 2 ' by the two through hole 12 of groove 11 inserted, the electric pin 23,23 that extend in 21 liang of bendings of lead place ' can be piercing in pedestal 1 outside.This moment, the insulation course 22 on the lead 21 was between through hole 12 inwalls and lead 21, thereby prevented lead 21 from contacting with through hole 12 inwalls and form short circuit.

Fig. 5 is the synoptic diagram that multipolarity power inductor of the present utility model is electrically connected with circuit board.As shown in the figure: when this power inductor is electrically connected with the circuit board 3 of power supply unit, extend two electric pins 23,23 of pedestal 1 outside ' behind the through hole 91 that passes circuit board 9, can be electrically connected with the Copper Foil on the circuit board 9.

With after the circuit board 3 of server is electrically connected, power inductor can burning voltage and electric current output, to provide rear end microprocessor (CPU) required power supply at power inductor.Simultaneously, when microprocessor has big electric current to flow through power inductor, but the electric current that the power inductor dispersion train is crossed, to reduce the thermal source that is produced when electric current flows through this power inductor.For example, the coil groups 2 of power inductor of the present utility model has four leads 21, and when the big electric current that flows through power inductor is 40 ampere-hours, each lead 21 can bear 10 amperes electric current, therefore makes this power inductor be difficult for producing high temperature and damages.

Fig. 6 and 7 is respectively the cross-sectional schematic of another embodiment of the present utility model and Fig. 6.As shown in the figure: the multipolarity power inductor of present embodiment comprises: pedestal 3 and coil groups 4, pedestal 3 is roughly the same with pedestal 1 and the coil groups 2 of Fig. 2 to 5 with coil groups 4, and difference is the rectangular parallelepiped of pedestal 3 for making with the electrically non-conductive material of nickel zinc (Nickel Zinc).Pedestal 3 tops are provided with groove 31, the through hole 32 that is provided with a plurality of circles in the groove 31 and is arranged in a linear along groove 1 length.

Coil groups 4 is a material with the copper or the aluminum metal of circle, and tailors into a plurality of U-shaped leads 41.Behind the line segment and two through hole 32 cross-under that extend in 41 liang in lead bending place, the line segment that exposes to pedestal 3 outsides form two

electric pins

43,43 '.Two electric pins 43,43 ' on cover one

deck tin layer

44,44 '.Tin layer 44,44 ' be used to provide power inductor to be electrically connected with the circuit board (not shown).

Fig. 8 and 9 is respectively the cross-sectional schematic of an embodiment more of the present utility model and Fig. 8.As shown in the figure: the multipolarity power inductor of present embodiment comprises: pedestal 5 and coil groups 6, pedestal 5 and coil groups 6 is roughly the same with pedestal 1,3 and coil groups 2,4 shown in Fig. 2 to 7, and difference is that pedestal 5 is rectangular parallelepipeds of being made by the electrically non-conductive material of any conduction of MnZn (Manganese zinc), iron powder iron core (Ironpowder core), alloy-iron core (Sendust core) or nickel zinc (Nickel zinc).Pedestal 5 tops are provided with groove 51, the through hole 52 that is provided with a plurality of rectangles in the groove 51 and is arranged in a linear along groove 51 length.

Coil groups 6 is a material with the copper metal of sheet, and tailors into a plurality of U-shaped leads 61.Be coated with insulation course 62 (if when pedestal 5 is made by the electrically non-conductive material of nickel zinc, then need not insulation course 62) on lead 61 skins, during with two through hole 52 cross-under, insulation course 52 can prevent that lead 61 from contacting the formation short-circuit condition with two through hole 52 inwalls at lead 61.The line segment integral coating that insulation course 62 does not extend 61 liang of bendings of lead place, allow this line segment be to expose with form two electric pins 63,63 ', two electric pins 63,63 ' on cover one deck tin layer 64,64 ', and behind two electric pins 63,63 ' pass through hole 52, electric pin 63,63 ' can bend in pedestal 5 bottoms, make two electric pins 63,63 ' on tin layer 64,64 ' can be directly welded on the Copper Foil (not shown) of circuit board surface, to form the surface adhering assembly.

Figure 10 is an another embodiment synoptic diagram of the present utility model.As shown in the figure: when

pedestal

1,3,5 and

coil groups

2,4,6 windings, the

lead

21,41,61 of

coil groups

2,4,6 is except can be along

groove

11,31,51 length arrangement of

pedestal

1,3,5, can also be as the lead 81 of coil groups 8 shown in this Fig, groove 71 width along pedestal 7 are stack arrangement, and this structure can shorten the length of power inductor.

Figure 11,12 is the side cross-sectional schematic of an embodiment and Figure 11 more again of the present utility model.As shown in the figure: the pedestal 3 in this enforcement and coil groups 4 and Fig. 6 and 7 identical, difference only be the electric pin 43 of the lead 41 of coil groups 4, the blocking

part

45,45 that 43 ' outside surface is provided with a plurality of microscler raised lines '.Blocking part 45,45 ' section are cruciform, and when the through hole 32 of pin 43, the 43 ' insertion pedestal 3 of lead 41, blocking part 45,45 ' be clip firmly is plugged in the through hole 32 lead 41 on the inwall of through hole 32.

The foregoing description is only for the usefulness that the utility model is described, and be not to restriction of the present utility model, those skilled in the art are under the prerequisite that does not break away from spirit and scope of the present utility model, and the various equivalent structures of being made change all within scope of the present utility model.Protection domain of the present utility model is defined by the claims.

Claims

1. the power inductor of a multipolarity comprises:

Pedestal, its top is provided with groove, is provided with a plurality of through holes in the described groove;

Coil groups is made up of the lead of a plurality of U-shapeds, and the line segment that extend in described lead two bending places passes described through hole, and extends outside two electric pins that form of described through hole.

2. the power inductor of multipolarity as claimed in claim 1 is characterized in that, described pedestal is any rectangular parallelepiped made by the electrically non-conductive material of conductive material such as MnZn, iron powder iron core, alloy-iron core or nickel zinc.

3. the power inductor of multipolarity as claimed in claim 1 is characterized in that, described through hole be shaped as circle or rectangle, and be arranged in a linear along the length of groove.

4. the power inductor of multipolarity as claimed in claim 1 is characterized in that, described through hole be shaped as circle or rectangle, and be stack arrangement along the width of groove.

5. the power inductor of multipolarity as claimed in claim 1 is characterized in that, described coil groups is made by the copper metal material of circle or sheet.

6. the power inductor of multipolarity as claimed in claim 1 is characterized in that, described pedestal is a conductive material, is arranged with insulation course on the lead of described coil groups.

7. the power inductor of multipolarity as claimed in claim 1 is characterized in that, covers one deck tin layer on the described electric pin.

8. the power inductor of multipolarity as claimed in claim 1 is characterized in that, when described pedestal was not conductive material, the electric pin outside surface of two bending places of described lead was provided with a plurality of blocking parts.

9. the power inductor of multipolarity as claimed in claim 8 is characterized in that, described blocking part is made up of a plurality of microscler raised lines.

10. the power inductor of multipolarity as claimed in claim 9 is characterized in that, described blocking part section is cruciform.