CN206789405U

CN206789405U - A kind of high current integrally-formed inductor

Info

Publication number: CN206789405U
Application number: CN201720692169.7U
Authority: CN
Inventors: 黄伟嫦
Original assignee: SHENZHEN CODACA ELECTRONIC CO Ltd
Current assignee: SHENZHEN CODACA ELECTRONIC CO Ltd
Priority date: 2017-06-13
Filing date: 2017-06-13
Publication date: 2017-12-22
Anticipated expiration: 2027-06-13

Abstract

The purpose of this utility model is to provide a kind of high current integrally-formed inductor, it is intended to solves existing integrally-formed inductor and short circuit easily occurs, open a way, DCR becomes big bad problem.Inductor provided by the utility model directly goes out pin including enamel wire coil with 270 °, and this 270 ° go out that leg structure avoids existing integrally-formed inductor and short circuit easily occurs, open circuit or DCR become the problem of big bad；And the pin part that goes out of the coil directly extends bending to form pin, and by the stage casing exposed part of pin after the tin plating processing of depainting directly as electrode, need to be flattened in the prior art or the operation of external terminal and the process that forms electrode so as to reduce；In addition, the angle of inclination for going out pin sloping portion of pin is avoided in inductor forming process between 30 ° to 80 °, coil goes out the problem of pin vertical component easily scratches coil, so as to avoid the product short-circuit conditions caused by enamel wire coil scratches breakage.

Description

A kind of high current integrally-formed inductor

Technical field

The utility model is applied to inductive technologies field, more particularly to a kind of high current integrally-formed inductor.

Background technology

Existing inductor preparation method has many kinds, meanwhile, the structure of inductor made of application method not of the same race There are number of different types.

Existing integrally-formed inductor, it goes out pin for 180 ° using flat wire, and this method needs process is flattened or external terminal, So as to cause to be wasted in technique, 180 ° due to the integrated inductance go out the structure of pin so that it is short that product is very easy to appearance Road, open circuit, DCR become big bad problem.

It is vertical that existing flat wire integrated inductance (see reference data CN201410129094) goes out placement of foot, sophisticated position Coil body is easily scratched, product short circuit when causing actual production.

Existing flat wire integrated inductance (see reference data CN201410129094), I pieces can not be fixed in coil, Easily mobile, high-volume magnetic core rupture is bad when causing actual production.

Utility model content

The purpose of this utility model is to provide a kind of high current integrally-formed inductor, it is intended to solves existing be integrally formed Easily there is short circuit in inductor, and open circuit, DCR becomes big bad problem.

In order to solve the above technical problems, what the utility model was realized in：The utility model provides a kind of high current Integrally-formed inductor, including enamel wire coil, external coating and magnetic core center pillar；

The magnetic core center pillar is built among the internal diameter of the enamel wire coil；

The coiling initiating terminal of the enamel wire coil directly goes out pin with 270 ° respectively with terminating end, and the initiating terminal is with terminating The pin extension that goes out at end is bent to the same side end face of enamel wire coil and forms respective pin；

Each pin includes the stage casing exposed part for the bottom plane for being exposed to the external coating, and parcel Front end sloping portion among the external coating；

Electrode of the stage casing exposed part after the tin plating processing of depainting as the inductor；

The angle of inclination of the front end sloping portion is between 30 ° to 80 °.

Further, the inductor also includes magnetic core base；

The magnetic core base is groove structure, its recess width and the diameter matches of the enamel wire coil；

The groove card insertion of the magnetic core base goes out between placement of foot and the electrode in the enamel wire coil, and described Groove both sides projection section clip is in the periphery of the enamel wire coil, so that the magnetic core base is fixed on the enamel-covered wire line Circle goes out on placement of foot.

Further, one end of the magnetic core center pillar and the magnetic core base assembly and connection；

The winding portion of the enamel wire coil, the magnetic core center pillar and the magnetic core base are wrapped in the external coating Among.

Preferential, the external coating is that magnetic metallic powder is compressing.

Preferential, the enamel wire coil is flat wire.

Compared with prior art, beneficial effect is the utility model：

Enamel wire coil in the utility model inductor directly goes out pin with 270 °, and 270 ° of the leg structure that goes out avoids biography Entity moulding inductor device, because flatten or external terminal there is short circuit, open circuit and DCR and become big bad problem.

Further, it is described go out pin coiler part directly extend bending to form pin, it is and the stage casing of pin is exposed Part, directly as the electrode of the inductor, needs to be flattened in the prior art after the tin plating processing of depainting so as to reduce Or external terminal operation and the process that forms electrode, improve production efficiency.

Further, the angle of inclination of pin front end sloping portion avoids being molded in inductor between 30 ° to 80 ° Cheng Zhong, coil go out the problem of pin vertical component easily scratches coil, so as to further avoid because enamel wire coil scratches breakage There is the situation of short circuit in inductor caused by and.

Brief description of the drawings

Fig. 1 is a kind of high current integrally-formed inductor structural representation that the utility model embodiment provides；

Fig. 2 is the inductor bottom schematic view that the utility model embodiment provides；

Fig. 3 is the model core arrangement schematic diagram inside the external coating that the utility model embodiment provides；

Fig. 4 is the enamel wire coil structural representation that the utility model embodiment provides；

Fig. 5 is the magnetic core center pillar and magnetic core understructure schematic diagram that the utility model embodiment provides；

Fig. 6 is the magnetic core understructure schematic diagram that the utility model embodiment provides；

Fig. 7 is the magnetic core centre-pillar structure schematic diagram that the utility model embodiment provides.

Embodiment

In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining The utility model, it is not used to limit the utility model.

As one embodiment of the present utility model, as shown in Figures 1 to 4, a kind of big electricity provided by the utility model Integrally-formed inductor is flowed, the inductor includes enamel wire coil 4A, external coating 1A and magnetic core center pillar 2A；In magnetic core center pillar 2A It is placed among enamel wire coil 4A internal diameter, enamel wire coil is formed from flat wire coiling.

Enamel wire coil 4A coiling initiating terminal (in Fig. 4 shown in 1) is straight with 270 ° respectively with terminating end (in Fig. 4 shown in 2) Pin is picked out, and the coiler part for going out pin directly extends bending to form pin.This 270 ° go out leg structure and can effectively keep away Exempt from inductor and the problem of short circuit, open circuit and DCR changes are big bad easily occur.Enamel wire coil 4A exists it can be seen from Fig. 4 During coiling, be since at No. 1 around, rotate clockwise or counter-clockwise N+0.75 circles, wherein, N to represent the complete number of turns, 0.75 circle is the redundance for controlling out pin direction, and a circle is 360 °, and 0.75 circle is 270 °.Lines 1 and 2 are to be in enamel-covered wire line Enclose upper and lower end face parallel direction；The pin that goes out for going out pin and terminating end of initiating terminal finally extends the homonymy for being bent to enamel wire coil End face forms respective pin；

Stage casing exposed part 6A of each pin comprising the bottom plane for being exposed to external coating 1A is (in such as Fig. 2 and Fig. 4 It is shown), and it is wrapped in the pin front end sloping portion 5A among external coating 1A.

Electrodes of the stage casing exposed part 6A after the tin plating processing of depainting as the inductor.The utility model embodiment The pin that goes out at enamel wire coil 4A both ends directly extends bending to form pin, and therefore, the material of pin is actually enamel-covered wire The material of coil.A part (stage casing exposed part) in the pin directly forms electrode after the tin plating processing of depainting, and will Final electrode of this partial electrode as inductor.The tin plating processing procedure of the depainting is equivalent to will be exhausted on enamel wire coil body Edge layer is sloughed, then tin plating again, and electrode is formed after directly going out pin equivalent to enamel wire coil 4A provided by the utility model, This avoid needing to form the process of electrode using external terminal or the technique flattened in the prior art, therefore, this reality Manufacture craft with new provided inductor is very simple.

Pin front end sloping portion 5A angle of inclination is between 30 ° to 80 °.Sloping portion 5A angle of inclination is set Put between 30 ° to 80 °, be the utility model embodiment by most preferably scheme obtained from experiment repeatedly.It is effective Avoid in the prior art when go out pin sloping portion 5A for 90 ° when, can in the forming process of coil with enamel wire coil body Friction is produced, so as to cause enamel wire coil to scratch the situation with breakage, so as to further avoid because enamel wire coil is drawn Wound and it is damaged and caused by inductance short-circuit conditions.

In summary, the inductor that the utility model one embodiment is provided, its enamel wire coil are direct with 270 ° Go out pin, this 270 ° go out that leg structure avoids inductor product and short circuit easily occurs, open circuit and DCR become the problem of big bad； And it is described go out pin coiler part directly extend bending to form pin, it is and the stage casing exposed part of pin is tin plating by depainting Directly as the electrode of the inductor after processing, need to be flattened in the prior art or the operation of external terminal so as to reduce And the process for forming electrode；In addition, the angle of inclination for going out pin sloping portion of pin can so avoid between 30 ° to 80 ° Go out the problem of pin sloping portion vertically easily scratches coil in the forming process of coil, so as to further avoid because of enamel-covered wire Coil scratch it is damaged and caused by product there is the situation of short circuit.

As second embodiment of the present utility model, as shown in Figures 1 to 7, a kind of big electricity provided by the utility model Integrally-formed inductor is flowed, increases magnetic core base 3A on the basis of embodiment one.

The structure of the inductor is：Magnetic core center pillar 2A is built among enamel wire coil 4A internal diameter；Magnetic core center pillar 2A's One end and magnetic core base 3A assembly and connections；Enamel wire coil 4A winding portion, magnetic core center pillar 2A and magnetic core base 3A is wrapped in Among external coating 1A.

Wherein, as shown in fig. 6, magnetic core base 3A is groove structure, its recess width and enamel wire coil 4A outer ring are straight Footpath matches.Magnetic core base 3A groove 3A-1 card insertions go out between placement of foot and electrode 6A in enamel wire coil 4A's, and magnetic core bottom The projection section 3A-2 clips of seat 3A groove both sides are in enamel wire coil 4A periphery, so that magnetic core base 3A is fixed on enamel-cover Line coil 4A's goes out on placement of foot.Magnetic core base 3A groove structure causes magnetic core base 3A to obtain fixation, so as to avoid Due to magnetic core base 3A can not be fixed in enamel wire coil, easy movement and caused by actual production when high-volume magnetic core rupture Bad problem.

External coating 1A is that magnetic metallic powder is compressing, rather than macromolecule magnetic material injection molding, in same size, In the case of identical inductances amount, saturation current can increase by more than 15%, and D.C. resistance reduces by more than 10%.The utility model is carried The inductor of confession is more suitable for needing the DC-to-dc converter of high current and small size, industrial power, automotive electronics, military project, The fields such as aviation.

Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model Protection domain within.

Claims

1. a kind of high current integrally-formed inductor, including enamel wire coil, external coating and magnetic core center pillar；The magnetic core center pillar It is built among the internal diameter of the enamel wire coil；Characterized in that,

The coiling initiating terminal of the enamel wire coil directly goes out pin with 270 ° respectively with terminating end, and the initiating terminal is with terminating end Go out pin extension and be bent to the same side end face of enamel wire coil to form respective pin；

Each pin includes the stage casing exposed part for being exposed to external coating bottom plane, and is wrapped in described Front end sloping portion among external coating；

2. a kind of high current integrally-formed inductor according to claim 1, it is characterised in that the inductor also includes Magnetic core base；

The groove card insertion of the magnetic core base goes out between placement of foot and the electrode in the enamel wire coil, and the groove Both sides projection section clip is in the periphery of the enamel wire coil, so that the magnetic core base is fixed on the enamel wire coil Go out on placement of foot.

A kind of 3. high current integrally-formed inductor according to claim 2, it is characterised in that the one of the magnetic core center pillar End and the magnetic core base assembly and connection；

The winding portion of the enamel wire coil, the magnetic core center pillar and the magnetic core base be wrapped in the external coating it In.

4. a kind of high current integrally-formed inductor according to claim 1, it is characterised in that the external coating is magnetic Property metal dust is compressing.

5. a kind of high current integrally-formed inductor according to claim 1, it is characterised in that the enamel wire coil is Flat wire.