CN204407162U - Skeleton and inductor - Google Patents
Skeleton and inductor Download PDFInfo
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- CN204407162U CN204407162U CN201520130942.1U CN201520130942U CN204407162U CN 204407162 U CN204407162 U CN 204407162U CN 201520130942 U CN201520130942 U CN 201520130942U CN 204407162 U CN204407162 U CN 204407162U
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Abstract
The utility model provide a kind of for can suppress the common differential mode integrated inductor of common mode and differential mode electromagnetic interference skeleton and based on the inductor made by this skeleton.A kind of skeleton, for using with the assembling of EI type magnetic core, comprise symmetry and spaced two drum stands, the main body of drum stand is the wrapping post that centre offers square hole, the two ends of wrapping post are outward extended with baffle plate, two baffle plates and wrapping post surround the winding slot holding coil, and described skeleton is integrally formed; The center line of two drum stand square holes overlaps, and two drum stands are connected by ribs, and ribs is concordant with the upper end of baffle plate; Wherein, ribs is connected to form with the baffle plate of two drum stands the assembly hole being communicated with two drum stand square holes, and post holes in passing through with assembly hole orthorhombic phase.Compared with prior art, the utility model skeleton can make to have that assembly device is few, structure is simple, volume is little based on the inductor made by this skeleton, can Automated winding, assembling is simple, production efficiency is high advantage.
Description
Technical field
The utility model relates to high-gradient magnetism devices field, particularly a kind of for can suppress the common differential mode integrated inductor of common mode and differential mode electromagnetic interference skeleton and based on the inductor made by this skeleton.
Background technology
As the supply convertor giving power electronic equipment, Switching Power Supply, because its volume is little, efficiency is high, replaces linear power supply gradually and becomes main flow.But the Switching Power Supply be operated under high frequency switch-mode can produce a large amount of electromagnetic interference, if do not protect, these electromagnetic interference can directly be scurried in electrical network, make power grid environment more and more severe.In order to reduce the electromagnetic interference of electronic equipment to electrical network, the international standard committee has formulated corresponding standard for EMC aspect of performance and has carried out management and control to various electronic message unit.
What the electromagnetic interference of electronic equipment to electrical network related generally to is conduction interference aspect; common conduction interference can be divided into differential mode interference and common mode disturbances; in order to suppress common mode disturbances and differential mode interference, usually common mode inductance and differential mode inductance can be added at the input of Switching Power Supply.And common mode inductance and differential mode inductance belong to magnetic device, generally all contain magnetic core, device volume is comparatively large, makes small product size very large.In order to reduced volume, market have employed a kind of by common mode inductance and the integrated technology of differential mode inductance, existing common mode inductance architecture basics increases a magnetic core center pillar, this center pillar is utilized to increase differential mode inductance amount, differential mode inductance and common mode inductance is allowed to use same coil windings and magnetic core, to realize common mode inductance and differential mode inductance integration.This technical scheme please refer to the United States Patent (USP) (US5313173A) of MOTOROLA company application.
Fig. 1 is the structure chart of the common differential mode integrated inductor adopting this technical scheme, and its patent announcement number is CN202004639U.After magnetic core increases center pillar, two coils of common mode inductance need to be wrapped on the side column of center pillar both sides.As shown in Figure 1, a kind of inductor skeleton, comprise base 20 with parallel and compartment of terrain is assembled in drum stand 1a, 1b on base, the bottom of base 20 is provided with pin 12,13; The main body of drum stand 1a, 1b is the wrapping post that centre offers square hole 40,41, and square hole 40,41 is assembled for the side column of E-type magnetic core; The two ends of wrapping post are outward extended with baffle plate 3a, 3b, and baffle plate 3a, 3b and wrapping post surround winding slot 2a, 2b of holding coil 31,32.Because the center line of the square hole 40,41 in the middle of two drum stands 1a, 1b is for be arrangeding in parallel, differential mode integrated inductor needs use two drum stands altogether, just need on two independently drum stand, to have twined coil respectively, then the drum stand of belt coil and magnetic core are assembled.The structure of modular two drum stands is usually steady not, in order to ensure stationarity and the reliability of product, also needs to add a base in bottom, and drum stand 1a, 1b of two being tied with coil are fixing on the base.。
But the assembly device quantity of the common differential mode integrated inductor skeleton of this modular construction is many, packaging technology is complicated, and two drum stands are separated accounts for that board space is large, volume large, and production cost is high.
Utility model content
The utility model solves that the assembly device quantity of inductor skeleton in prior art is many, complex process and bulky problem, provides a kind ofly on a skeleton, to be wound around the skeleton that two coils realize the inductor of common differential mode integration by this.
Corresponding therewith, the utility model solves that the assembly device quantity of inductor skeleton is many, complex process and bulky problem, also provides a kind of inductor made based on this skeleton.
It is as described below that the utility model solves the technical scheme that its technical problem adopts:
A kind of skeleton, for using with the assembling of EI type magnetic core, comprise symmetry and spaced two drum stands, the main body of drum stand is the wrapping post that centre offers square hole, the two ends of wrapping post are outward extended with baffle plate, two baffle plates and wrapping post surround the winding slot holding coil, and described skeleton is integrally formed; The center line of two drum stand square holes overlaps, and two drum stands are connected by ribs, and ribs is concordant with the upper end of baffle plate; Wherein, ribs is connected to form with the baffle plate of two drum stands the assembly hole being communicated with two drum stand square holes, and post holes in passing through with assembly hole orthorhombic phase.
Preferably, the Thickness Ratio inner side baffle of the outer side shield of described drum stand is thick, and the outer wall upper side of outer side shield has the vertical groove longitudinally vertical with assembly hole, and the outer wall medial side of outer side shield has the horizontal groove laterally vertical with assembly hole.
Preferably, on the horizontal groove of described drum stand, the assembling position of a little higher than E-type magnetic core side column lower end, position of cell wall, in order to after EI type magnetic core assembles, can expose the interarea connecting sewing of EI type magnetic core from horizontal groove end face.
Preferably, the groove width of described horizontal groove is a bit larger tham the thickness of I magnetic core, the lower cell wall of horizontal groove and the base plane of assembly hole coplanar.
Preferably, the baffle plate of described drum stand is extended with installation base downwards from bottom, for exceeding the tin point height of the end of a thread after wicking on pin, to ensure the stationarity when bank of inductors be made up of skeleton installs on printed circuit board (PCB).
Preferably, wire lead slot is offered bottom the inwall of the outer side shield of described drum stand.
Preferably, the bottom of the outer side shield of described wrapping post is provided with pin.
Based on technique scheme, a kind of inductor is provided further, the skeleton provided by technique scheme, coil and EI type magnetic core assemble, described EI type magnetic core is made up of E-type magnetic core and I type magnetic core, described E-type magnetic core is positioned the top of skeleton by middle post holes, I type magnetic core is plugged in assembly hole, the E-type magnetic core assembled and the immobilization with adhesive tape of I type magnetic core by being wound around in ribs position.
Preferably, the E-type magnetic core assembled described in and I type magnetic core are fixed by the connecting sewing place point glue at EI type magnetic core.
Based on aforesaid skeleton technical scheme, a kind of inductor is also provided, the skeleton provided by technique scheme, coil and EI type magnetic core assemble, described E-type magnetic core is positioned the top of skeleton by middle post holes, I type magnetic core is plugged in assembly hole, the E-type magnetic core assembled and the immobilization with adhesive tape of I type magnetic core by being wound around in ribs position, and fixed by the interarea connecting sewing place point glue at EI type magnetic core.
Compared with the common differential mode integrated inductor structure of prior art, use the utility model skeleton, can make to have that assembly device is few, structure is simple, volume is little based on the inductor made by this skeleton, can Automated winding, assembling is simple, production efficiency is high advantage.
Accompanying drawing explanation
Fig. 1: prior art is total to the stereogram of differential mode integrated inductor;
Fig. 2: the stereogram of the utility model inductor skeleton;
Fig. 3: the bottom-up stereogram of the utility model inductor skeleton;
Fig. 4: the combination stereogram of two magnetic cores that the utility model inductor skeleton uses;
Fig. 5: the front view of two magnetic cores that the utility model inductor skeleton uses;
Fig. 6: the utility model inductor skeleton and two magnetic cores assemble after stereogram;
In accompanying drawing, the list of parts representated by each label is as follows:
1-skeleton, 2-winding slot, 3-baffle plate, 4-isolation channel, 5-middle post holes, 6-ribs, 7-vertical groove, 8-horizontal groove, 9-assembly hole, 10-magnetic core clamping boss, 11-installation base, the 12-the first coil pin, the 13-the second coil pin, 14-wire lead slot, the 15-the first magnetic core, 15a-side column, 15b-center pillar, the 16-the second magnetic core, 17-air gap.
Embodiment
In order to understand the utility model better relative to the improvement done by prior art, before embodiment of the present utility model is described in detail, first the prior art that background technology part is mentioned is illustrated by reference to the accompanying drawings.
Fig. 1 is prior art differential mode integrated inductor structure chart altogether, a kind of differential mode integrated inductor altogether, comprises the first skeleton 1a, the second skeleton 1b, the first magnetic core 15, second magnetic core 16, base 20, first coil pin 12, second coil pin 13, first coil 31, second coil 32, square hole 40,41.
According to the structure of Fig. 1 scheme, the first skeleton 1a and the second skeleton 1b is single winding slot skeleton of same shape structure.First the first coil 31 of common differential mode integrated inductor is wrapped on the first skeleton 1a, second coil 32 is wrapped on the second skeleton 1b, then will be tied with the first skeleton 1a of coil and the second skeleton 1b and base 20 is assembled, and by the first coil 31 and the second coil 32 play line end and take-up end is wrapped in the first coil pin 12 corresponding bottom base 20 and the second coil pin 13.Finally the first magnetic core 15 of two E types and the second magnetic core 16 are assembled with skeleton.During magnetic core assembling, injected by two of magnetic core side columns in the square hole 40,41 in the middle of the first skeleton 1a and the second skeleton 1b, magnetic core center pillar is placed in viewing position in the middle of the first skeleton 1a and the second skeleton 1b, finally two magnetic cores and skeleton is jointly fixed.
Follow the structure of technique scheme, there is some deficiency following in existing differential mode integrated inductor altogether: be first that two coil racks are symmetrically distributed on two side columns of magnetic core, space availability ratio is very low, and account for plate area large, overall volume size is also large; Secondly, according to this structure, the junction of two panels magnetic core cannot add magnetic core glue and reliably connect, and is only difficult to ensure that the long-time close contact of two panels magnetic core does not loosen by the mode of gummed paper or agrafe fixed magnetic core, very large on inductance value impact; Be finally that number of devices is many, assembling procedure is many and complicated, and production effect is very low.
The utility model improves for above problem exactly, improved though of the present utility model is: united two into one by two coil winding frames, on a skeleton, integrated two drum stands, are out of shape magnetic core simultaneously, with the simplification of the reduction and technique that realize volume.
Embodiment of the present utility model is as follows:
Fig. 2, Fig. 3 are the stereogram of the utility model inductor skeleton, for a skeleton for common differential mode integrated inductor, comprise skeleton 1, winding slot 2, baffle plate 3, isolation channel 4, middle post holes 5, ribs 6, vertical groove 7, horizontal groove 8, assembly hole 9, magnetic core clamping boss 10, installation base 11, first coil pin 12, second coil pin 13, wire lead slot 14.
The combination stereogram of two magnetic cores that Fig. 4 and Fig. 5 uses for the utility model inductor skeleton.Use the common differential mode integrated inductor of the utility model skeleton to two magnetic cores should be had, be respectively the first magnetic core 15 and the second magnetic core 16.
Preferably, the first magnetic core 15 is E-type magnetic core, has two side column 15a and center pillar 15b respectively, with air gap 17 on center pillar 15b.
Preferably, the second magnetic core 16 is I type magnetic core.
Fig. 2, Fig. 3 are the stereogram of the utility model inductor skeleton, and as shown in the figure, skeleton 1 has in the middle of two symmetrical winding slots, 2, two winding slots 2 and have two baffle plates 3 to isolate, baffle plate 3 forms closed isolation barricade along 360 °, skeleton around a circle.Be an isolation channel 4 in the middle of two baffle plates 3, the width of isolation channel 4 is slightly larger than the center pillar 15b of the first magnetic core 15.Isolation channel 4 is the stopper slot of encapsulate paper simultaneously, and gummed paper wraps two circles along isolation channel 4 and first magnetic core 15 and the second magnetic core 16 compressed, and makes two side column 15a of the first magnetic core 15 and two close contact of the second magnetic core 16.And magnetic core and skeleton 1 are first fixed by encapsulate paper on isolation channel 4, after convenient, put the operation of magnetic core glue.
The top and the bottom of isolation channel 4 respectively have ribs 6, four ribs 6 of two longitudinal directions to be connected by two baffle plates 3 respectively, can the intensity of web frame 1 mid portion, prevent skeleton 1 therefrom between fracture.
Skeleton 1 has a square opening at the top of intermediate isolating groove 4, opening forms post holes 5 with the two panels ribs 6 and two panels baffle plate 3 being arranged in upper end position.Middle post holes 5 is communicated with the through hole of skeleton 1 inside, and the width of middle post holes 5 is a bit larger tham the width of the center pillar 15b of the first magnetic core 15.The center pillar 15b of the first magnetic core 15 therefrom post holes 5 groups enters.
Respectively there is the groove of a longitudinal direction at the two ends of skeleton 1 outside winding slot 2, are vertical groove 7, and respectively there are two magnetic core clamping boss 10 both sides of vertical groove 7.When first magnetic core 15 is assembled with skeleton 1, two side column 15a of the first magnetic core 15 are arranged in vertical groove 7, and magnetic core clamping boss 10 plays screens effect to the first magnetic core 15, prevent the first magnetic core 15 from moving in the horizontal direction.
Skeleton 1 has the through hole of a flat pattern in the inside that winding slot 2 surrounds, and two through holes of two symmetrical winding slots 2 are communicated with by ribs 6 and install in assembly hole 9 for assembly hole 9, the second magnetic core 16 transverse set.The two ends of the second magnetic core 16 are concordant with the side at skeleton 1 two ends, and the length of the second magnetic core 16 equals the length of skeleton 1.
Two lateral ends of skeleton 1 respectively have the horizontal groove 8 of the bar shaped of a transverse direction, and horizontal groove 8 is positioned at below magnetic core clamping boss 10.
The lower cell wall 81 of horizontal groove 8 is in the same plane with the base plane of assembly hole 9, and the groove width 1.5mm ~ 2mm larger than the thickness of the second magnetic core 16 of horizontal groove 8, namely the groove width of horizontal groove 8 is a bit larger tham the thickness of the second magnetic core 16.As shown in Figure 6, for the utility model inductor skeleton and two magnetic cores assemble after stereogram, figure is visible thus, the assembling position of the side column lower end of a little higher than first magnetic core 15 in the position of cell wall 82 on horizontal groove 8, namely, after the first magnetic core 15, second magnetic core 16 is assembled with skeleton 1, the side column 15a of the first magnetic core 15 and the interarea connecting sewing 18 of the second magnetic core 16 can be seen from horizontal groove 8 side.A syringe needle of magnetic core glue is stretched into from the not ipsilateral of horizontal groove 8 respectively, also can on four interarea connecting sewing 18 place points of two side column 15a of the first magnetic core 15 and the second magnetic core 16 magnetic core glue, after the baking of magnetic core glue, the first magnetic core 15 is reliably connected with the second magnetic core 16.From technological angle, also be feasible at the side connecting sewing 19 place point glue of the first magnetic core 15 and the second magnetic core 16, but when point glue amount is many, excessive, the structure of evagination after solidification, all may affect the quality that magnetic core and skeleton are assembled, effective not as hidden interarea connecting sewing 18 place point glue in horizontal groove 8.At interarea connecting sewing 18 place point glue, when point glue amount is many, horizontal groove 8 can be received.
The two bottom sides of skeleton 1 respectively has two direct insertion wiring pins symmetrical, be respectively the first coil pin 12 and the second coil pin 13, head and the tail the end of a thread of first coil is wrapped on two terminals of the first coil pin 12 respectively, head and the tail the end of a thread of second coil is wrapped on two terminals of the second coil pin 13 respectively, and the first coil is identical with the direction of winding of the second coil.
As shown in Figure 3, bottom skeleton 1, there are four wire lead slots 14, lay respectively at inside the first coil pin 12 and the second coil pin 13 also respectively near four wiring pins.First coil and the second coil initial line rear line head and take-up rear line head when coiling are stuck in wire lead slot 14, can prevent the end of a thread from moving.
Baffle plate 3 has four installation bases 11 bottom skeleton 1, and the both sides of each baffle plate 3 respectively have one.Installation base 11 is than winding slot 2 peak height 1mm ~ 2mm.Tie up the height of the end of a thread in the first coil pin 12 and the second coil pin 13 tin point height after wicking lower than installation base 11.When common differential mode integrated inductor is assembled on printed circuit board, four installation bases 11 can ensure that inductor itself does not well steadily tilt.
In order to improve the tightness of the first magnetic core 15 and the second magnetic core 16 contact-making surface further, to ensure to obtain higher inductance value, preferably need to do mirror process in the face that two side column 15a of the first magnetic core 15 contact with the second magnetic core 16, the plane that the second magnetic core 16 contacts with the first magnetic core 15 needs to do mirror process.
Fig. 4 and Fig. 5 assembles by the utility model inductor skeleton the stereogram of the EI type magnetic core of use, and the first magnetic core 15 and the assembling of the second magnetic core 16 form EI type magnetic core, can find out that the width of the first magnetic core 15 equals the length of the second magnetic core 16.The center pillar 15b of the first magnetic core 15 arranges air gap 17 according to design requirement, prevents common differential mode integrated inductor because differential-mode current causes magnetic core saturated.
Fig. 6 is the stereogram after the utility model inductor skeleton and two magnetic cores are assembled, show the first magnetic core 15, second magnetic core 16 assemble with skeleton 1 after structure and correspondence position relation.
Below be only preferred implementation of the present utility model, it should be pointed out that above-mentioned preferred implementation should not be considered as restriction of the present utility model, protection range of the present utility model should be as the criterion with claim limited range.For those skilled in the art, not departing from spirit and scope of the present utility model, can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (10)
1. a skeleton, for using with the assembling of EI type magnetic core, comprises symmetry and spaced two drum stands, the main body of drum stand is the wrapping post that centre offers square hole, the two ends of wrapping post are outward extended with baffle plate, and two baffle plates and wrapping post surround the winding slot holding coil, it is characterized in that:
Described skeleton is integrally formed;
The center line of two drum stand square holes overlaps, and two drum stands are connected by ribs, and ribs is concordant with the upper end of baffle plate;
Wherein, ribs is connected to form with the baffle plate of two drum stands the assembly hole being communicated with two drum stand square holes, and post holes in passing through with assembly hole orthorhombic phase.
2. skeleton according to claim 1, it is characterized in that: the Thickness Ratio inner side baffle of the outer side shield of described drum stand is thick, the outer wall upper side of outer side shield has the vertical groove longitudinally vertical with assembly hole, and the outer wall medial side of outer side shield has the horizontal groove laterally vertical with assembly hole.
3. skeleton according to claim 2, it is characterized in that: the assembling position of a little higher than E-type magnetic core side column lower end, position of cell wall on the horizontal groove of described drum stand, in order to after EI type magnetic core assembles, the interarea connecting sewing of EI type magnetic core can be exposed from horizontal groove end face.
4. skeleton according to claim 2, is characterized in that: the groove width of described horizontal groove is a bit larger tham the thickness of I magnetic core, the lower cell wall of horizontal groove and the base plane of assembly hole coplanar.
5. skeleton according to claim 1, it is characterized in that: the baffle plate of described drum stand is extended with installation base downwards from bottom, for exceeding the tin point height of the end of a thread after wicking on pin, to ensure the stationarity when bank of inductors be made up of skeleton installs on printed circuit board (PCB).
6. skeleton according to claim 1, is characterized in that: offer wire lead slot bottom the inwall of the outer side shield of described drum stand.
7. skeleton according to claim 1, is characterized in that: the bottom of the outer side shield of described wrapping post is provided with pin.
8. an inductor, the skeleton according to any one of claim 1 to 7, coil and EI type magnetic core assemble, and described EI type magnetic core is made up of E-type magnetic core and I type magnetic core, it is characterized in that:
Described E-type magnetic core is positioned the top of skeleton by middle post holes, I type magnetic core is plugged in assembly hole, the E-type magnetic core assembled and the immobilization with adhesive tape of I type magnetic core by being wound around in ribs position.
9. inductor according to claim 8, is characterized in that: described in the E-type magnetic core that assembles and I type magnetic core fixed by the connecting sewing place point glue at EI type magnetic core.
10. an inductor, the skeleton according to any one of claim 3 to 7, coil and EI type magnetic core assemble, and described EI type magnetic core is made up of E-type magnetic core and I type magnetic core, it is characterized in that:
Described E-type magnetic core is positioned the top of skeleton by middle post holes, I type magnetic core is plugged in assembly hole, the E-type magnetic core assembled and the immobilization with adhesive tape of I type magnetic core by being wound around in ribs position, and is fixed by the interarea connecting sewing place point glue at EI type magnetic core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520130942.1U CN204407162U (en) | 2015-03-06 | 2015-03-06 | Skeleton and inductor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520130942.1U CN204407162U (en) | 2015-03-06 | 2015-03-06 | Skeleton and inductor |
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| CN204407162U true CN204407162U (en) | 2015-06-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783065A (en) * | 2016-12-13 | 2017-05-31 | 海宁联丰东进电子有限公司 | A kind of compact filter |
| CN108039270A (en) * | 2017-11-17 | 2018-05-15 | 海宁联丰东进电子有限公司 | A kind of differential mode transformer altogether |
-
2015
- 2015-03-06 CN CN201520130942.1U patent/CN204407162U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783065A (en) * | 2016-12-13 | 2017-05-31 | 海宁联丰东进电子有限公司 | A kind of compact filter |
| CN108039270A (en) * | 2017-11-17 | 2018-05-15 | 海宁联丰东进电子有限公司 | A kind of differential mode transformer altogether |
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