CN209216716U - Chip inductor - Google Patents

Abstract

The utility model provides a kind of chip inductor, including magnetic core, coil, two guide pins, moulded package in enclosed seat and two end pole pieces on magnetic core；The one end of each guide pin far from center pillar is fixedly linked with corresponding end pole piece.The utility model is by being arranged guide pin at magnetic core both ends; coil both ends on magnetic core are connected with two guide pins; and and enclosed seat is made by moulded package on magnetic core; to protect magnetic core; and fix the coil on guide pin and magnetic core and magnetic core; form full-enclosed structure, it is ensured that good reliability promotes the adaptives capacity to environment such as high temperature, high humidity, severe cold, salt fog；And enclosed seat is protruded into the end of guide pin, and then it is connected with end pole piece is equipped on enclosed seat, to in production, assembling production can be carried out in biggish space, convenient for industrial automated production, and can guarantee being reliably connected for end pole piece and guide pin, guide pin and coil, guarantee the performance of the chip inductor of production.

Description

Chip inductor

Technical field

The utility model belongs to inductors technique field, is to be related to a kind of chip inductor more specifically.

Background technique

With the continuous progress of science and technology with the fast development of information industry, extensive, super large-scale integration, which becomes, to be sent out The mainstream and trend of exhibition, chip inductor have the characteristics that small in size, space utilization rate is high, are suitable for surface installation and SMT (table Face mounting technology, the abbreviation of Surface Mount Technology) attachment automatically, it can be good at meeting intelligence manufacture sum aggregate At circuit demand for development.Current chip inductor is usually that coil is wound on columnar magnetic core, is then charged into shell, and Paster pin is installed in the shell, and extend into one end of pin in shell and is welded with the exit of coil, then on the shell Seal up cover board.The chip inductor of this structure needs to draw paster pin and coil in the inner cavity of shell in production End welding, it is extremely inconvenient, also it is easy to cause that the welding is not firm, and influence the performance of chip inductor.

Utility model content

The purpose of this utility model is to provide a kind of chip inductors, to solve chip inductor existing in the prior art Device production is complicated, needs to weld in small space, and welding is inconvenient and easily leads to the problem of being not connected firmly.

In order to achieve the above purposes, the technical solution adopted by the utility model is: provides a kind of chip inductor, including magnetic Core, the coil being wound on the magnetic core, two guide pins for being respectively arranged in the magnetic core both ends, moulded package are in the magnetic core On enclosed seat and be buckled in the end pole piece at the enclosed seat both ends respectively；The magnetic core include center pillar and be set to the center pillar both ends Plate washer, each plate washer is along the radially protruding of the center pillar center pillar；Axial direction of the one end of each guide pin along the center pillar Be fixed on the plate washer, the coil is wound on the center pillar, the both ends of the coil extend have respectively with two institutes The connected lead-out wire of guide pin is stated, the enclosed seat wraps up the magnetic core, and each guide pin stretches out institute far from one end of the center pillar The corresponding end surface of enclosed seat is stated, and the one end of each guide pin far from the center pillar is fixedly linked with the corresponding end pole piece.

Further, the periphery of each plate washer offers the wire lead slot for passing through for the lead-out wire, each described to draw Outlet crosses the plate washer through the wire lead slot and is connected with the corresponding guide pin.

Further, each plate washer periphery uniform intervals are equipped with N number of wire lead slot, and N is positive integer, and N with it is described The product for drawing linear diameter is less than the perimeter of the plate washer.

Further, jack is offered on each plate washer, one end of each guide pin inserts in the jack.

Further, each lead-out wire is wound on the corresponding guide pin.

Further, the both ends of the enclosed seat are respectively equipped with accommodation groove, and each end pole piece is installed on the corresponding appearance It sets in slot.

Further, each accommodation groove is extended to the two sides of the enclosed seat, each end by the end face of the enclosed seat Pole piece covers the corresponding accommodation groove.

Further, the two sides of the enclosed seat offer positioning in each angle corresponding position of each accommodation groove respectively Hole, each of the both ends of each end pole piece angular projecting inward have positioning column.

Further, the corresponding through-hole offered for guide pin insertion on each end pole piece, each guide pin insertion It is weldingly connected in the corresponding through-hole and with the end pole piece.

Further, each through-hole is in flaring shape by the direction of the end pole piece inner surface to outer surface.

The beneficial effect of chip inductor provided by the utility model is: compared with prior art, the utility model is logical Cross and guide pin be set at magnetic core both ends, the coil both ends on magnetic core are connected with two guide pins, and and pass through moulded package on magnetic core Enclosed seat is made, to protect magnetic core, and the coil on guide pin and magnetic core and magnetic core is fixed, forms full-enclosed structure, it can To guarantee good reliability, the adaptives capacity to environment such as high temperature, high humidity, severe cold, salt fog are promoted；And encapsulation is protruded into the end of guide pin Seat, and then be connected with end pole piece is equipped on enclosed seat, so that assembling system can be carried out in biggish space in production Make, be convenient for industrial automated production, and can guarantee being reliably connected for end pole piece and guide pin, guide pin and coil, guarantees to make Chip inductor performance.

Detailed description of the invention

It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new Some embodiments of type for those of ordinary skill in the art without any creative labor, can be with It obtains other drawings based on these drawings.

Fig. 1 is the structural schematic diagram for the chip inductor that the utility model embodiment one provides；

Fig. 2 is the positive structure diagram of magnetic core in chip inductor shown in FIG. 1；

Fig. 3 is the side structure schematic view of magnetic core in Fig. 2；

Fig. 4 is coiling on magnetic core in Fig. 2 and the structural schematic diagram after installation guide pin；

Fig. 5 is that moulded package makes the structural schematic diagram after enclosed seat on magnetic core in Fig. 4；

Fig. 6 is the positive structure diagram of the end pole piece of chip inductor shown in FIG. 1；

Fig. 7 is the left view structural representation of Fig. 6 middle-end pole piece；

Fig. 8 is the right side structural representation of Fig. 6 middle-end pole piece.

Fig. 9 is the positive structure diagram for the chip inductor that the utility model embodiment two provides.

Figure 10 is the side structure schematic view for the chip inductor that the utility model embodiment three provides.

Wherein, each attached drawing main mark in figure:

100- chip inductor；10- magnetic core；11- center pillar；12- plate washer；121- wire lead slot；122- jack；21- coil； 211- lead-out wire；22- guide pin；The end 23- pole piece；231- through-hole；232- positioning column；30- enclosed seat；31- accommodation groove；32- positioning Hole；40- indicates pattern.

Specific embodiment

In order to which technical problem to be solved in the utility model, technical solution and beneficial effect is more clearly understood, with Lower combination accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific reality described herein It applies example to be only used to explain the utility model, is not used to limit the utility model.

It should be noted that it can be directly another when element is referred to as " being fixed on " or " being set to " another element On one element or indirectly on another element.When an element is known as " being connected to " another element, it can To be directly to another element or be indirectly connected on another element.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention, More than, unless otherwise specifically defined." several " are meant that one or more, unless otherwise clearly specific limit It is fixed.

In the description of the present invention, it should be understood that term " center ", " length ", " width ", " thickness ", The orientation of the instructions such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" or Positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, Rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, because This should not be understood as limiting the present invention.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements or the interaction relationship of two elements.For those of ordinary skill in the art and Speech, can understand the concrete meaning of above-mentioned term in the present invention as the case may be.

Embodiment one:

Also referring to Fig. 1 to Fig. 8, now chip inductor 100 provided by the utility model is illustrated.The chip Inductor 100, including magnetic core 10,21, two guide pins 22 of coil, enclosed seat 30 and two end pole pieces 23；Magnetic core 10 includes center pillar 11 and two plate washers 12, two plate washers 12 be respectively provided at the both ends of center pillar 11, each plate washer is along the radially protruding of center pillar 11 center pillar 11, coil 21 is wound on magnetic core 10, and specially coil 21 is wound on center pillar 11, so that two plate washers 12 play positioning backstop Effect, prevent coil 21 from falling off from center pillar 11；The both ends of coil 21 each extend over out lead-out wire 211, two lead-out wires 211 are connected with two guide pins 22 respectively, to realize that the both ends by two guide pins 22 respectively with coil 21 are electrical connected.Two guide pins 22 are respectively arranged in 10 both ends of magnetic core, and to support two guide pins 22 by magnetic core 10, one end of specially each guide pin 22 is in Column 11 is axially fixed on plate washer；30 moulded package of enclosed seat on magnetic core 10, i.e., by way of molding by magnetic core 10 into Row encapsulation so that enclosed seat 30 be made to support magnetic core 10, while supporting magnetic core to form the enclosed seat 30 of package magnetic core 10 The guide pin 22 at 10 both ends of coil 21 and magnetic core in 10 forms full-enclosed structure, it is ensured that good reliability is promoted The adaptives capacity to environment such as high temperature, high humidity, severe cold, salt fog.Two end pole pieces 23 are buckled in 30 both ends of enclosed seat, each guide pin 22 respectively The corresponding end surface of enclosed seat 30 is stretched out in one end far from center pillar 11；And the one end of each guide pin 22 far from center pillar 11 and corresponding end pole Piece 23 is fixedly linked, while the structure can also be smaller by the production of the volume of chip inductor 100.

Further, which can first make magnetic core 10 in production, then pacify at the both ends of magnetic core 10 Guide pin 22 is filled, then the coiling 21 on magnetic core 10, then the both ends lead-out wire 211 of coil 21 is connected with two guide pins 22. The magnetic core 10 after assembling is integrally placed in mold with coil 21 again, moulded package is carried out, to form enclosed seat outside magnetic core 10 30, then by two end 23 pressings of pole piece at the both ends of enclosed seat 30 so that two guide pins 22 respectively with two end 23 phases of pole piece Even；Manufacture craft is simple, easy to assembly without limiting assembling space, is convenient for industrial automated production, and can guarantee end pole Piece 23 is reliably connected with guide pin 22, guide pin 22 with coil 21, guarantees the performance of the chip inductor 100 of production.

Chip inductor 100 provided by the utility model, compared with prior art, the utility model pass through at 10 liang of magnetic core End setting guide pin 22,21 both ends of coil on magnetic core 10 are connected with two guide pins 22, and and pass through moulded package on magnetic core 10 Enclosed seat 30 is made, to protect magnetic core 10, and fixes the coil 21 on guide pin 22 and magnetic core 10 and magnetic core 10, is formed complete Enclosed construction, it is ensured that good reliability promotes the adaptives capacity to environment such as high temperature, high humidity, severe cold, salt fog；And guide pin Enclosed seat 30 is protruded into 22 end, and then is connected with end pole piece 23 is equipped on enclosed seat 30, thus when making, can compared with Assembling production is carried out in big space, is convenient for industrial automated production, and can guarantee end pole piece 23 and guide pin 22, guide pin 22 are reliably connected with coil 21, guarantee the performance of the chip inductor 100 of production.

Further, one kind referring to Figure 2 together to Fig. 4, as chip inductor 100 provided by the utility model Specific embodiment, the periphery of each plate washer 12 offer the wire lead slot 121 for passing through for lead-out wire 211, each lead-out wire 211 Plate washer 12 is crossed through wire lead slot 121 to be connected with corresponding guide pin 22.It, can be by lead-out wire when coil 21 stretches out lead-out wire 211 211 cross wire lead slot 121 is connected with corresponding guide pin 22, easy to connect, and when moulded package makes enclosed seat 30, can be effective The lead-out wire 211 of reduction coil 21 is in mold process due to being acted on the risk for occurring being broken by external force.Certainly, at it In its some embodiment, aperture can also be opened up on each plate washer 12, after lead-out wire 211 is passed through aperture, with 22 phase of guide pin Even.

Further, one kind referring to Figure 2 together to Fig. 4, as chip inductor 100 provided by the utility model Specific embodiment, the periphery of each plate washer 12 are equipped with N number of wire lead slot 121, and N is positive integer, and N and 211 diameter of lead-out wire multiply Product is less than the perimeter of plate washer 12；N number of wire lead slot 121 is disposed in an evenly spaced relation in 12 periphery of plate washer, so that coiling is special in center pillar 11 Surely after the coil 21 enclosed, 21 both ends of coil can be connected by neighbouring wire lead slot 121 with opposite guide pin 22, thus in coil 21 The accurate control that circle number reaches 1/N circle can be achieved in winding process.

In the present embodiment, set on each plate washer 12 there are four the wire lead slot 121.In some other embodiment, wire lead slot 121 may be one, two, three, five etc. quantity.

Further, plate washer 12 is in the form of annular discs, to facilitate processing and fabricating, while the circle number convenient for determining coiling 21.

Further, magnetic core 10 is integrally formed, and to facilitate processing and fabricating, while guaranteeing the good intensity of magnetic core 10.

Further, one kind referring to Figure 2 together to Fig. 4, as chip inductor 100 provided by the utility model Specific embodiment, magnetic core 10 are soft magnetism magnetic core, i.e. magnetic core 10 is made of soft magnetic material.Specifically, soft magnetism magnetic core High molecular material magnetic core etc. is adulterated for FERRITE CORE, permalloy magnetic core, magnetic powder core, soft magnetic material, i.e., magnetic core 10 can Using materials production such as ferrite, permalloy, iron powder, soft magnetic material doping high molecular materials.

Further, one kind referring to Figure 2 together to Fig. 4, as chip inductor 100 provided by the utility model Specific embodiment, magnetic core 10 are nonmagnetic magnetic core, i.e., magnetic core 10 can be made of non-magnetic material.Specifically, nonmagnetic Magnetic core is aluminium oxide ceramics magnetic core, dielectric ceramic magnetic core, macromolecule non-magnetic material magnetic core etc., i.e. magnetic core 10 can be using oxidation The production of the materials such as aluminium ceramics, dielectric ceramic, macromolecule non-magnetic material.

Further, one kind referring to Figure 2 together to Fig. 4, as chip inductor 100 provided by the utility model Specific embodiment offers jack 122 on each plate washer 12, and one end of each guide pin 22 inserts in jack 122.On plate washer 12 Jack 122 is set, to facilitate installation fixation guide pin 22.

Further, each jack 122 and center pillar 11 are coaxial.The structure is when guide pin 22 is inserted into jack 122, guide pin 22 Can be coaxial with center pillar 11, to facilitate production.Further, each jack 122 is located at the center of plate washer 12, so as in moulded package When, 22 position of guide pin is not needed to determine, and then facilitate processing and fabricating.

Further, one kind referring to Figure 2 together to Fig. 4, as chip inductor 100 provided by the utility model Specific embodiment, each lead-out wire 211 of coil 21 are wound on corresponding guide pin 22, to keep lead-out wire 211 and guide pin 22 good Good is fixedly connected.

Further, each lead-out wire 211 of coil 21 is weldingly connected with corresponding guide pin 22, so as to each lead-out wire 211 and phase It answers guide pin 22 that can more preferably be fixedly connected, and guide pin 22 is made to electrically conduct with lead-out wire 211.

Further, coil 21 is formed using conducting wires coilings such as enameled wire or electric wires, to reduce cost, guarantees inductor Reliability.Specifically, enameled wire can be enamel-cover copper coin, enamel manganin, enamel insulated aluminium wire, enamel-cover silver wire, enamelled stranded-wire etc.. Electric wire can be aluminium core electric wire, copper core electric wire, wicker copper electric wire, silver core electric wire etc..

Further, each guide pin 22 can use phosphor bronze is tin plating, phosphor bronze is gold-plated, copper clad steel is tin plating, copper clad steel plates etc. Conductor material with certain mechanical strength and low D.C. resistance is prepared, and the good welding performance having.So as to The lead-out wire 211 of coil 21 connects, while reducing loss, promotes the reliability of inductor.

Further, also referring to Fig. 1, fig. 4 to fig. 6, as chip inductor 100 provided by the utility model one Kind specific embodiment, enclosed seat 30 encapsulates production by the way of molding, and wraps magnetic core 10, by coil 21 and magnetic core 10 Etc. functional modules protected, realize the integrated design of the 100 core component structure of chip inductor, form closing knot Structure, and then promote adaptive capacity to environment.

Further, enclosed seat 30 can be mixed using non-magnetic epoxy group encapsulating material, dielectric material, soft magnetic material The material of the suitable moulded package such as miscellaneous polymer composite makes.It can be by selecting different encapsulating materials, it can be achieved that should The adjustment of 100 electrical performance indexes of chip inductor and reliability index and effectively control.

Further, also referring to Fig. 1, fig. 4 to fig. 6, as chip inductor 100 provided by the utility model one Kind specific embodiment, the both ends of enclosed seat 30 are respectively equipped with accommodation groove 31, each that pole piece 23 is held to be installed on corresponding accommodation groove 31 In.Accommodation groove 31 is set at the both ends of enclosed seat 30, to position and install fixing end pole piece 23.

Further, epoxy cement glue-line is equipped in accommodation groove 31, so that end pole piece 23 is welded and fixed.

Further, also referring to Fig. 1, Fig. 5 to Fig. 8, as chip inductor 100 provided by the utility model one Specific embodiment is planted, each accommodation groove 31 is extended to the two sides of the enclosed seat 30 by the end face of enclosed seat 30 on enclosed seat 30, respectively End pole piece 23 cover corresponding accommodation groove 31, thus the structure will hold pole piece 23 be designed to it is U-shaped, to be preferably buckled in enclosed seat 30 On, it can not only make that pole piece 23 is held more stably to be mounted on enclosed seat 30, but also can be formed and be drawn in the two sides of enclosed seat 30 Foot, in order to carry out welding use from the two sides of enclosed seat 30.

Further, the two sides of enclosed seat 30 offer location hole 32 in each angle corresponding position of each accommodation groove 31 respectively, The each of the both ends of each end pole piece 23 angular projecting inward has positioning column 232.The structure can will hold pole piece in installation end pole piece 23 Each positioning column 232 on 23 is inserted into accommodation groove 31 in each location hole 32, and end pole piece 23 is consolidated by the scheme of mechanical engagement It is scheduled on enclosed seat 30, guarantees the fastness that end pole piece 23 is installed.

Further, respectively corresponding on the pole piece 23 of end to offer the through-hole 231 being inserted into for guide pin 22, each guide pin 22 is inserted into phase It answers in through-hole 231 and is weldingly connected with end pole piece 23.Through-hole 231 is set on the pole piece 23 of end, during installation, each guide pin 22 can be with It protrudes into respective through hole 231, and then guide pin 22 and end pole piece 23 can be weldingly connected, guarantee 23 jail of guide pin 22 and end pole piece It is solidly connected.

Further, each through-hole 231 is in flaring shape by the direction of 23 inner surface of end pole piece to outer surface.By each through-hole 231 Setting is in flaring shape, in welding, can increase the contact area between guide pin 22, end pole piece 23 and solder, to effectively mention It rises guide pin 22 and holds the soldering reliability between pole piece 23.Further, each through-hole 231 is tapered, to facilitate processing, simultaneously It is also convenient for positioning when welding, the reliability for promoting guide pin 22 and pole piece 23 being held to weld.Further, guide pin 22 in through-hole It can be using landfill built-up welding, to guarantee the fastness of welding in 231.

Further, also referring to Fig. 1, Fig. 6 to Fig. 8, as chip inductor 100 provided by the utility model one Kind specific embodiment, end pole piece 23 can use conductive metallic material or do the nonmetallic materials of surface metalation processing It is made.

Specifically, end pole piece 23 can be metal type end pole piece, i.e. end pole piece 23 can be made of metal material.More Body, metal type end pole piece can be the tin plating end pole piece of phosphor bronze, the gold-plated end pole piece of phosphor bronze, the tin plating end pole piece of copper clad steel, copper Gold-plated end pole piece of Baogang etc., it can use the materials such as phosphor bronze is tin plating, phosphor bronze is gold-plated, copper clad steel is tin plating, copper clad steel is gold-plated Manufacturing terminal pole piece 23.

Specifically, end pole piece 23 can be plastic-metal combined type end pole piece, i.e. end pole piece 23 can use plastic-metal The production of combined type material.More specifically, plastic-metal combined type end pole piece can be (poly- for bakelite metal carbonyl complexes end pole piece, PPS Diphenyl sulfide) metal carbonyl complexes end pole piece, surface metalation end pole piece etc..Bakelite metal carbonyl complexes, PPS (polyphenyl can be used Thioether) metal carbonyl complexes, surface metalation the materials manufacturing terminal pole piece 23 such as non-conducting material.

Further, also referring to Fig. 1, Fig. 6 to Fig. 8, as chip inductor 100 provided by the utility model one Kind specific embodiment, end pole piece 23 is in both ends symmetrical structure, to make the outer surface for holding 23 both ends of pole piece, is being encapsulated The two sides of seat 30 are respectively formed the pad of inductor, and can be used for mounting.And two end 23 structures of pole piece are consistent, so as to have The reduction design and processing cost of effect.

Further, Fig. 1 to Fig. 6 is please referred to, a kind of specific reality as chip inductor 100 provided by the utility model Apply mode, the chip inductor 100 using soft magnetism magnetic core, enameled wire, metal type end pole piece, epoxy resin molding compound preparation and At.

Further, Fig. 1 to Fig. 6 is please referred to, a kind of specific reality as chip inductor 100 provided by the utility model Apply mode, the chip inductor 100 using soft magnetism magnetic core, enameled wire, metal type end pole piece, dielectric material molding compound preparation and At.

Further, Fig. 1 to Fig. 6 is please referred to, a kind of specific reality as chip inductor 100 provided by the utility model Mode is applied, which is mixed using nonmagnetic magnetic core, enameled wire, plastic-metal combined type end pole piece, soft magnetic material Miscellaneous polymer composite molding compound is prepared.

Further, Fig. 1 to Fig. 6 is please referred to, a kind of specific reality as chip inductor 100 provided by the utility model Mode is applied, the high score which is adulterated using nonmagnetic magnetic core, electric wire, metal type end pole piece, soft magnetic material The composite material moulded material of son is prepared.

Further, Fig. 1 to Fig. 6 is please referred to, a kind of specific reality as chip inductor 100 provided by the utility model Mode is applied, the chip inductor 100 is using nonmagnetic magnetic core, electric wire, plastic-metal combined type end pole piece, dielectric material molding Material is prepared.

Further, Fig. 1 to Fig. 6 is please referred to, a kind of specific reality as chip inductor 100 provided by the utility model Mode is applied, the height which is adulterated using dielectric ceramic magnetic core, enameled wire, metal type end pole piece, soft magnetic material Molecular composite material material is prepared.

Further, Fig. 1 to Fig. 6 is please referred to, a kind of specific reality as chip inductor 100 provided by the utility model Mode is applied, which uses non-magnetic material magnetic core, enameled wire, plastic-metal combined type end pole piece, epoxy resin Molding compound is prepared.

Further, Fig. 1 to Fig. 6 is please referred to, a kind of specific reality as chip inductor 100 provided by the utility model Mode is applied, which uses macromolecule non-magnetic material magnetic core, electric wire, metal type end pole piece, soft magnetic material The polymer composite molding compound of doping is prepared.

Embodiment two:

Referring to Fig. 9, the difference of the chip inductor 100 of the present embodiment and the chip inductor of embodiment one are as follows:

The surface of enclosed seat 30 is equipped with mark pattern 40, in order to carry out type selecting when in use.Mark pattern 40 can be adopted It is made of the modes such as material formula or in-situ modification of increasing.Specifically, increase material formula production method can for off-set oil ink, spray paint, High energy beam melts the modes such as cover with material or different material.In-situ modification production method can be the modes such as laser engraving, mechanical finishing impression.

The other structures phase of the other structures of the chip inductor 100 of the present embodiment and the chip inductor of embodiment one Together, details are not described herein.

Embodiment three:

Referring to Fig. 10, the difference of the chip inductor 100 of the present embodiment and the chip inductor of embodiment one are as follows:

23 surface of pole piece is held to be equipped with mark pattern 40, in order to carry out type selecting when in use.Mark pattern 40 can use The modes such as material formula or in-situ modification of increasing are made.Specifically, increasing material formula production method can be off-set oil ink, spray paint, height Beam melts the modes such as cover with material or different material.In-situ modification production method can be the modes such as laser engraving, mechanical finishing impression.

The other structures phase of the other structures of the chip inductor 100 of the present embodiment and the chip inductor of embodiment one Together, details are not described herein.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims (10)

1. chip inductor, it is characterised in that: including magnetic core, the coil being wound on the magnetic core, be respectively arranged in the magnetic Two guide pins, the moulded package at core both ends are buckled in the end pole at the enclosed seat both ends in the enclosed seat on the magnetic core and respectively Piece；The magnetic core includes center pillar and the plate washer set on the center pillar both ends, and each plate washer should along the radially protruding of the center pillar Center pillar；One end of each guide pin is axially fixed on the plate washer along the center pillar, and the coil is wound in the center pillar On, the both ends of the coil, which are extended, the lead-out wire being connected respectively with two guide pins, and the enclosed seat wraps up the magnetic Core, each guide pin stretches out the corresponding end surface of the enclosed seat far from one end of the center pillar, and each guide pin is far from institute The one end for stating center pillar is fixedly linked with the corresponding end pole piece.

2. chip inductor as described in claim 1, it is characterised in that: the periphery of each plate washer is offered for described in confession The wire lead slot that lead-out wire passes through, each lead-out wire cross the plate washer through the wire lead slot and are connected with the corresponding guide pin.

3. chip inductor as claimed in claim 2, it is characterised in that: each plate washer periphery uniform intervals are equipped with N number of institute Wire lead slot is stated, N is positive integer, and N and the product for drawing linear diameter are less than the perimeter of the plate washer.

4. chip inductor as described in any one of claims 1-3, it is characterised in that: jack is offered on each plate washer, One end of each guide pin inserts in the jack.

5. chip inductor as described in any one of claims 1-3, it is characterised in that: each lead-out wire is wound in corresponding institute It states on guide pin.

6. chip inductor as described in any one of claims 1-3, it is characterised in that: the both ends of the enclosed seat are respectively equipped with Accommodation groove, each end pole piece are installed in the corresponding accommodation groove.

7. chip inductor as claimed in claim 6, it is characterised in that: each accommodation groove is prolonged by the end face of the enclosed seat The two sides of the enclosed seat are extended to, each end pole piece covers the corresponding accommodation groove.

8. chip inductor as claimed in claim 7, it is characterised in that: the two sides of the enclosed seat in each accommodation groove it Each angle corresponding position offers location hole respectively, and each of the both ends of each end pole piece angular projecting inward has positioning column.

9. chip inductor as described in any one of claims 1-3, it is characterised in that: correspondence offers on each end pole piece For the through-hole of guide pin insertion, each guide pin is inserted into the corresponding through-hole and is weldingly connected with the end pole piece.

10. chip inductor as claimed in claim 9, it is characterised in that: each through-hole by the end pole piece inner surface extremely The direction of outer surface is in flaring shape.