CN201188341Y

CN201188341Y - Surface installation type inductor

Info

Publication number: CN201188341Y
Application number: CNU2008200097420U
Authority: CN
Inventors: 易秋云; 胡强
Original assignee: Sumida Electric HK Co Ltd
Current assignee: Sumida Electric HK Co Ltd
Priority date: 2008-05-08
Filing date: 2008-05-08
Publication date: 2009-01-28
Anticipated expiration: 2018-05-08

Abstract

The utility model discloses a surface mounting induction coil which comprises a pot core containing a hollow winding, the hollow winding which can wind bilaterally and two wire connecting terminals, a notch is arranged on the side wall of the pot core, two lead ends of the hollow winding are respectively educed out of the notch and are respectively connected with one wire connecting terminal, and the lead side of the lead end of the notch is provided with an extension part which extends to the other side from the periphery of the pot core. The surface mounting inductor has the advantages that the structure is simple, the assembly is easy, the boundary part of the lead end stripping an insulation layer is placed on the outer wall of the extension part so that enough insulation distance can be ensured, the gap between the wire connecting terminals and the inner winding is increased, so the electric connection property of the lead end and the wire connecting terminals is improved, the inner short circuit caused by the welding process is prevented, the welding fraction defective is reduced, the assembly control and the process of stripping the hull of a lead wire are convenient, and the production efficiency and the product excellent rate are favorable to being improved.

Description

A kind of surface installation type inductor

Technical field

The utility model relates to a kind of inductor, especially relates to the surface installation type inductor with jar shape core structure.

Background technology

Along with electronics industry day by day to highly integrated, miniaturization, the low priceization development reduces the erection space of these elements and module, and the miniaturization of element itself, changes at a low price to reducing the volume of terminal equipment, one of means of weight.With the surface installation type inductor is example, wherein a kind of jar shape magnetic core and hollow coil by the band pit formed, the pit of jar shape magnetic core inside can hold hollow coil, its end face is provided with notch, the side of adjacent cut portion is provided with binding post, air core coil is formed by the Wire-wound that the surface has insulating barrier, and two lead ends of coiling are drawn outside jar shape magnetic core by notch respectively, are connected on the binding post.Two lead ends of air core coil must have an end need be attached on the binding post when notch is drawn, and when mounted, two lead end terminations of coiling need be removed insulating barrier respectively, so that it is combined with binding post is electrical respectively.Common removal method is for using laser burn off insulating barrier.In order to ensure complete being combined on the binding post of coiling two lead ends energy of removing insulating barrier, and do not make it again near the coiling main body, can be when divesting the insulating barrier burn off of the outer lead-in wire of magnetic core.Under the very little situation of goods, because the winding diameter that uses is very thin, in operation, be difficult to guarantee the accuracy of burn off position, on the lead end that especially just can't guarantee to remove insulating barrier on precision just in time drops on outside the magnetic core fully, it is long to remove insulating barrier, has reduced the insulating properties between lead-in wire and the coil body, and it is too short also may to remove insulating barrier, make the electrical connectivity between lead-in wire end and the binding post descend the defective products rate height of goods.

Summary of the invention

The purpose of this utility model provides a kind of reliable, good insulation preformance and high surface installation type inductor of goods acceptance rate of connecting.

Technology solution of the present utility model is: a kind of surface installation type inductor, comprise and have the jar shape magnetic core that can hold air core coil, air core coil and two binding posts of two-way spiral, the sidewall of jar shape magnetic core is provided with notch, two lead ends of air core coil are drawn and are connected a binding post respectively from notch respectively, and the lead end outlet side of described notch is provided with the extension that extends to opposite side along described jar of shape magnetic core periphery.

After the lead end of air core coil is drawn from notch, a lead end is to draw along coiling direction, a lead end is to draw against coiling direction, the critical place that divests insulating barrier just in time drops on the outer wall of extension, can guarantee like this to divest between the lead end of insulating barrier and the air core coil inside and guarantee enough insulation distances, can guarantee also that simultaneously the insulating barrier that is electrically connected the position with binding post all is stripped from, can fully guarantee the acceptance rate of goods.

Described jar of shape magnetic core comprises first jar of shape magnetic core and the second jar of shape magnetic core that has the pit that can hold air core coil respectively, on the sidewall of first jar of shape magnetic core, be provided with first notch, be provided with second notch on the sidewall of second jar of shape magnetic core, two lead ends of described air core coil are drawn with second notch and are connected a described binding post respectively from first notch respectively.Like this after first jar of shape magnetic core and second jar of shape magnetic core fasten, first notch and the setting one on the other of second notch, the two-way coiling of the lead of air core coil also becomes two-layer, two lead ends are drawn from first notch and second notch respectively, like this at any notch place, between pad and another layer line circle by the sidewall of jar shape magnetic core as at interval, promptly can further prevent to weld back lead wire insulation pull-up and remove the long internal short-circuit hidden danger that causes, improve fail safe, can also reduce the difficulty of welding operation and assembling, be convenient to operation, enhance productivity.

Stagger between described first notch and second notch, best angle is 180 °, can guarantee enough spacings like this, safety when further improving welding and goods are installed in the weld strength behind the printed circuit board (PCB), the control that divests the insulating barrier operation that also helps going between simultaneously.

Be respectively equipped with groove on the bottom surface of described first jar of shape magnetic core and second jar of shape magnetic core, described binding post is provided with the teat with this groove fit, binding post easy to use is fixing with two jar shape magnetic core combinations, simplify assembling procedure, improve the overall construction intensity of product, convenient transportation and storage.

Described first jar of shape magnetic core is the identical octagon jar shape magnetic core of shape with described second jar of shape magnetic core, and convenient production simplified technology.

Rounded or the rectangle of the conductor cross-section of described air core coil makes full use of existing overlay film lead, selects for use flexibly according to different induction device purposes and effect.

The utility model has the advantages that: simple in structure, assembling easily, drawing the critical part that line end divests insulating barrier is placed on the extension outer wall, guarantee enough insulation distances, increased the interval between binding post and the Inside coil, improved the electrical connectivity of lead end and binding post, prevent the internal short-circuit that causes in the welding process, reduce the failure welding rate, be convenient to control the decortication operation of assembling and lead-in wire, help enhancing productivity and the goods acceptance rate.

Description of drawings

Accompanying drawing 1 is the vertical view of first jar of shape magnetic core among the utility model embodiment;

Accompanying drawing 2 is the structural representation of second jar of shape magnetic core among the utility model embodiment;

Accompanying drawing 3 is the package assembly schematic diagram of the inductor of the utility model embodiment;

Accompanying drawing 4 is a structural representation after the assembling of the utility model embodiment;

Accompanying drawing 5 is a structural representation after the assembling under another visual angle of the utility model embodiment;

1, first jar of shape magnetic core, 2, second jars of shape magnetic cores, 3, air core coil, 4, binding post, 5, binding post, 6, pit, 7, insertion section, 8, first notch, 9, second notch, 10, groove, 11, centre bore, 12, lead end, 13, lead end, 14, teat, 15, the clamp pin, 16, clamp pin, 17, extension.

Embodiment

Embodiment:

Consult Fig. 1 and 2, be the first jar of shape magnetic core 1 of a kind of surface installation type inductor of the utility model embodiment and the structural representation of second jar of shape magnetic core 2, first jar of shape magnetic core 1 is the identical octagon of shape with second jar of shape magnetic core 2, its inside has pit 6, can be used for installing air core coil 3, pit 6 middle parts are provided with insertion section 7, are used to penetrate the centre bore 11 at air core coil 3 middle parts.

The sidewall of first jar of shape magnetic core 1 is provided with first notch 8, lead end outlet side at this first notch 8 is provided with the extension 17 that extends to opposite side along first jar of shape magnetic core 1 periphery, so, if with AA ' is axle, the angle of the both sides of first notch 8 and AA ' axle is respectively α, β so, α＞β is then arranged, and the lead end 12 of air core coil 3 stretches out from β angle breach, combines by scolding tin with binding post.The structure of second jar of shape magnetic core 2 is identical with first jar of shape magnetic core 1.

Consult Fig. 3, the package assembly schematic diagram of shape inductor is installed for face among the utility model embodiment.Wherein, this surface installation type inductor, the air core coil 3 and two

binding posts

4 and 5 that comprise first jar of shape magnetic core 1 and second jar of shape magnetic core 2, two-way spiral, the sidewall of first jar of shape magnetic core 1 is provided with first notch 8, the lead end outlet side of this first notch 8 is provided with extension 17, the sidewall of second jar of shape magnetic core 2 is provided with second notch 9 that staggers with first notch 8, in the present embodiment, staggers 180 ° between first notch 8 and second notch 9; Be respectively equipped with groove 10 on the bottom surface of first jar of shape magnetic core 1 and second jar of shape magnetic core 2;

The double-layer structure up and down that air core coil 3 forms for the two-way coiling of lead that uses the surface applied insulating barrier, its two

lead end

12 and 13 is two-layer up and down respectively draws and passes respectively first notch 8 and second notch 9 to magnetic core, part with shadow representation on it is the part that has divested insulating barrier, and this part is respectively applied for and is electrically connected binding post 4 and 5.Air core coil 3 can be chosen the cross section and reel for circular conventional wires and make, and low price like this obtains also and makes things convenient for; Also can choose the cross section is that rectangular lenticular wire coiling is made, and is applicable to the setting height(from bottom) occasions with limited.

Binding

post

4 and 5 has the teat 14 that cooperates with groove 10 respectively, and is respectively equipped with

foldable clamp pin

15 and 16 on it.

Consult Fig. 4 and Fig. 5, be structural representation after the assembling under the present embodiment different angles, after wherein first jar of shape magnetic core 1 and second jar of shape magnetic core 2 fasten, first notch 8 and second notch 9 180 degree that stagger one on the other, two

lead ends

12 and 13 of air core coil 3 are drawing from first notch 8 and second notch 9 one on the other respectively also, wherein lead end 12 turns down against coiling direction, the part that divests insulating barrier on it is arranged on the outer wall of extension 17, and pass the upwards clamp pin 15 of turnover of binding post 4, after the long part of excision, be weldingly fixed on the clamp pin 15; Lead end 13 is along coiling direction, pass the clamp pin 16 of downward turnover of binding post 5 after, excise longer part, be weldingly fixed on the clamp pin 16; Because divesting the critical place of insulating barrier part, lead end 12 is positioned at outside jar shape magnetic core, simultaneously between each pad and another layer line circle by the sidewall of jar shape magnetic core as the interval, can prevent to weld the long internal short-circuit hidden danger that causes of back lead-in wire depainting, improve fail safe, can also reduce and divest and the difficulty of welding operation and assembling, be convenient to operation, enhance productivity.

Above-listed detailed description is specifying at one of the utility model possible embodiments, this embodiment is not in order to limit claim of the present utility model, allly do not break away from the equivalence that the utility model does and implement or change, all should be contained in the claim of this case.

Claims

1, a kind of surface installation type inductor, comprise and have the jar shape magnetic core that can hold air core coil, air core coil and two binding posts of two-way spiral, the sidewall of jar shape magnetic core is provided with notch, two lead ends of air core coil are drawn and are connected a binding post respectively from notch respectively, it is characterized in that the lead end outlet side of described notch is provided with the extension that extends to opposite side along described jar of shape magnetic core periphery.

2, a kind of surface installation type inductor according to claim 1, it is characterized in that: described jar of shape magnetic core comprises first jar of shape magnetic core and the second jar of shape magnetic core that has the pit that can hold air core coil respectively, on the sidewall of first jar of shape magnetic core, be provided with first notch, be provided with second notch on the sidewall of second jar of shape magnetic core, two lead ends of described air core coil are drawn with second notch and are connected a described binding post respectively from first notch respectively.

3, a kind of surface installation type inductor according to claim 2 is characterized in that: the setting of staggering of described first notch and described second notch.

4, a kind of surface installation type inductor according to claim 3 is characterized in that: stagger 180 ° between described first notch and second notch.

5, a kind of surface installation type inductor according to claim 2, it is characterized in that: be respectively equipped with groove on the bottom surface of described first jar of shape magnetic core and second jar of shape magnetic core, described binding post is provided with the teat with this groove fit.

6, according to claim 2,3,4 or 5 described a kind of surface installation type inductors, it is characterized in that: described first jar of shape magnetic core is the identical octagon jar shape magnetic core of shape with described second jar of shape magnetic core.

7, a kind of surface installation type inductor according to claim 6 is characterized in that: the rounded or rectangle of the conductor cross-section of described air core coil.