CN203491041U

CN203491041U - Inductor

Info

Publication number: CN203491041U
Application number: CN201320516415.5U
Authority: CN
Inventors: 康武闯; 李建辉; 樊应县; 高永毅; 陈益芳; 王智会
Original assignee: Shenzhen Zhenhua Ferrite and Ceramic Electronics Co Ltd
Current assignee: Shenzhen Zhenhua Ferrite and Ceramic Electronics Co Ltd
Priority date: 2013-08-22
Filing date: 2013-08-22
Publication date: 2014-03-19
Anticipated expiration: 2023-08-22

Abstract

An inductor comprises a framework, a coil and a magnetic core, wherein the coil is wound on the framework, the magnetic core is located in a cavity of the framework, and the coil is formed by winding multiple strands of enamelled copper wires. The requirements for large current, high sensitive quality, low direct-current resistance and miniaturization of the inductor can be met, and the inductor can be applied to all of products needing the inductor.

Description

Inductor

Technical field

The utility model relates to electronic component, particularly relates to a kind of inductor.

Background technology

Inductor is generally comprised of skeleton, winding, radome, encapsulating material, magnetic core or iron core etc.Rated current, as a major parameter of inductance, refers to the lowest high-current value that inductor can bear under the operational environment allowing.Some high power circuits require higher to the rated current of inductor, therefore occurred high-current inductor.

High-current inductor specification and shape have a variety of both at home and abroad, but the inductance value of traditional high-current inductor is all relatively low, sensibility reciprocal is a few microhenry to tens microhenrys mostly, the inductance that sensibility reciprocal reaches tens microhenrys compares less, henries up to a hundred just still less, cannot reach military requirement, thereby limit its scope of application.

Utility model content

Based on this, be necessary to provide the inductor of a kind of large electric current, high sensibility reciprocal.

An inductor, comprises skeleton, coil, magnetic core, and described coil winding is on skeleton, and described magnetic core is positioned at the cavity of skeleton, and described coil adopts the enamel covered wire coiling of multi cord.

Above-mentioned inductor, multi cord winding method has been realized the large electric current of inductor, and skeleton and magnetic core combining structure have realized the high sensibility reciprocal of inductor.

In an embodiment, the model of described skeleton is EE55 type therein, and described skeleton is provided with 20 stitch for welding.The model of skeleton has realized the compact in size of inductor, and the welding of spininess pin has guaranteed the stability of inductor when complete machine.

In an embodiment, the wire diameter of described coil is greater than 1.5mm therein.

Therein in an embodiment, the number of share of stock of described multi cord is more than or equal to 40 strands and be less than or equal to 80 strands.

In an embodiment, described magnetic core is bonded into two " mouth " fonts by the magnetic core of two " E " shapes therein, and the bonding mode of two magnetic cores is that some glue formula is bonding.

In an embodiment, described coil and described magnetic core are bonded into one therein, and bonding mode is that some glue formula is bonding.Can guarantee that like this product is not loosening.

Therein in an embodiment, described skeleton top is provided with four and interconnects the protruding baffle plate that surrounds " mouth " font, wherein, with on two protruding baffle plates of the transverse cross-section parallel of described coil, be respectively provided with respectively line hole, draw at the two ends of the enamel covered wire of the described multi cord respectively line hole from described two protruding baffle plates.

In an embodiment, the enamel covered wire exit cover of described multi cord has Teflon sleeve pipe therein, and one end of described Teflon sleeve pipe extends the wicking root of the enamel covered wire of described multi cord.That Furtulon sleeve pipe has is high temperature resistant, the effect of high insulation, it is extended to wicking root and can guarantee the isolation of inductor when the complete machine.

In an embodiment, the length that described Teflon sleeve pipe stretches into the enamel covered wire of multi cord is 5mm～10mm therein, can effectively guarantee that Teflon sleeve pipe does not come off.

Therein in an embodiment, the enamel covered wire of described multi cord is tight, parallel, winding is regularly on described skeleton.

Accompanying drawing explanation

Fig. 1 is the contour structures front elevation of an embodiment inductor;

Fig. 2 is the contour structures side view of inductor shown in Fig. 1;

Fig. 3 is the internal structure schematic diagram of inductor shown in Fig. 1.

Embodiment

Please refer to Fig. 1 and Fig. 2, is contour structures front elevation and the side view of an embodiment inductor.The large high sensibility reciprocal inductor of electric current comprises knee copper-clad line 160, the Teflon sleeve pipe 170 of skeleton 110, coil 120, magnetic core and magnetic core bonding place 130, coil and magnetic core bonding place 140, magnetic core 150, multi cord.Coil 120 is wrapped on skeleton 110, and magnetic core 150 is positioned at the cavity of skeleton 110, and coil 120 adopts enamel covered wire 160 coilings of multi cord.

In the present embodiment, the model of skeleton 110 is EE55 type, and its size is: 58mm*56mm*49.5mm, i.e. high 58mm, 56mm, the 49.5mm of being respectively of length and width.Realized like this compact in size.Be appreciated that the size of skeleton can change within the specific limits in other embodiments.

Skeleton 110 comprises skeleton body 111, protruding baffle plate 112 and stitch 114.Skeleton body 111 is rectangular-shaped, is provided with four protruding baffle plates 112 that are interconnected to form " mouth " font at the top of skeleton body 111." mouth " font area that four protruding baffle plates 112 surround is less than the area of skeleton body 111 upper surfaces.Be positioned at front and with two protruding plate washers 112 of positive symmetrical another side on be respectively provided with respectively two line holes 113.Draw at the two ends of the enamel covered wire 160 of the multi cord respectively line hole 113 from described two protruding baffle plates 112.Stitch 114 is positioned at skeleton bottom, and the number of stitch 114 is 20, is divided into two rows, 10 of every rows.Adopt the welding of spininess pin, can guarantee that inductor stability when complete machine welds is better.Be appreciated that in other embodiments, the number of stitch can fluctuate within the specific limits.

Coil 120 is wrapped in the inside of skeleton body 111, and coil 120 adopts enamel covered wire 160 winding methods of multi cord, can realize so the large electric current of inductor.For realizing the large electric current of inductor, be greater than 1.5mm establishing clocking requirement wire diameter, what adopt in the present embodiment is that 0.2mm is multiplied by the multi cord of 60 strands, the diameter of every strand is 0.2mm, always has 60 strands.In other embodiments, the number of share of stock of multi cord can change between 40 strands to 80 strands, and number of share of stock is more than or equal to 40 strands and be less than or equal to 80 strands, and the cross section of coil 120 is positive parallel with skeleton 110.

Magnetic core 150 is that the magnetic core by two " E " shapes is bonded into two " mouth " fonts, and the bonding mode of two magnetic cores is bonding for some glue formula, and vacuum need be carried out containing paint processing in magnetic core and magnetic core bonding place 130, through hot setting formation diaphragm.Magnetic core 150 is positioned at the cavity of skeleton 110, and it and coil 120 are bonded into one, and bonding mode is that some glue formula is bonding.Vacuum need be carried out containing paint processing in coil and magnetic core bonding place 140, through hot setting, forms diaphragm.When the high sensibility reciprocal of design inductor, require the inductance coefficent of magnetic core 150 relatively high, in the present embodiment, magnetic core magnetic permeability is 7100nH/n2.

The enamel covered wire 160 of multi cord, after the complete coil of coiling, directly extracts from line hole 113.The end cover that lays out of the enamel covered wire 160 of multi cord has Teflon sleeve pipe 170 high temperature resistant, high-insulativity.Aspect processing technology, one end of controlling Teflon sleeve pipe 170 extends the wicking root of the enamel covered wire 160 of multi cord, to guarantee the isolation of inductor when the complete machine.In addition, the length that Teflon sleeve pipe 170 stretches into the enamel covered wire 160 of multi cord is 5～10mm, can effectively guarantee that Teflon sleeve pipe 170 does not come off before complete machine.Tight, parallel, regular during enamel covered wire 160 coiling of multi cord.Can guarantee that like this sensibility reciprocal of inductor and D.C. resistance reach requirement.

Please refer to Fig. 3, is the internal structure schematic diagram of inductor shown in Fig. 1.From figure, can be clear that stitch 114 and the coil 120 of inductor.Each circle 121 has represented coil varnish bag copper wire windings one circle, each row's circle has represented coil varnish bag copper wire winding one deck.In the present embodiment, coil varnish copper-clad wound coil number is 36 circles, and every row is around 8 circles, and around five layers, layer 5 is not around full.Be appreciated that in other embodiments, coil varnish copper-clad wound coil number can fluctuate within the specific limits.

Above-mentioned inductor meets the test requirements document of GJB360B, and inductance value can reach 220 microhenrys, and D.C. resistance is 0.023 ohm, and rated current is 20.0 amperes.This inductor can be realized the requirement of large electric current, high sensibility reciprocal, low D.C. resistance, miniaturization, can reach military requirement, and this inductor may be used in all products that need inductor, thereby has effectively expanded its scope of application.

The above embodiment has only expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.

Claims

1. an inductor, is characterized in that, comprises skeleton, coil, magnetic core, and described coil winding is on skeleton, and described magnetic core is positioned at the cavity of skeleton, and described coil adopts the enamel covered wire coiling of multi cord.

2. inductor according to claim 1, is characterized in that, the model of described skeleton is EE55 type, and described skeleton is provided with 20 stitch for welding.

3. inductor according to claim 1, is characterized in that, the wire diameter of described coil is greater than 1.5mm.

4. inductor according to claim 1, is characterized in that, the number of share of stock of described multi cord is more than or equal to 40 strands and be less than or equal to 80 strands.

5. inductor according to claim 1, is characterized in that, described magnetic core is bonded into two " mouth " fonts by the magnetic core of two " E " shapes, and the bonding mode of two magnetic cores is that some glue formula is bonding.

6. inductor according to claim 1, is characterized in that, described coil and described magnetic core are bonded into one, and bonding mode is that some glue formula is bonding.

7. inductor according to claim 1, it is characterized in that, described skeleton top is provided with four and interconnects the protruding baffle plate that surrounds " mouth " font, wherein, with on two protruding baffle plates of the transverse cross-section parallel of described coil, be respectively provided with respectively line hole, draw at the two ends of the enamel covered wire of the described multi cord respectively line hole from described two protruding baffle plates.

8. inductor according to claim 1, is characterized in that, the enamel covered wire exit cover of described multi cord has Teflon sleeve pipe, and one end of described Teflon sleeve pipe extends the wicking root of the enamel covered wire of described multi cord.

9. inductor according to claim 8, is characterized in that, the length that described Teflon sleeve pipe stretches into the enamel covered wire of multi cord is 5mm～10mm.

10. inductor according to claim 1, is characterized in that, the enamel covered wire of described multi cord is tight, parallel, winding is regularly on described skeleton.