CN203839156U - Round closed magnetic circuit chip inductor - Google Patents

Abstract

The utility model discloses a circular closed magnetic circuit paster inductance, including a base, one of them diagonal angle of base is equipped with the hanging wire respectively and colludes, and the base middle part is equipped with cyclic annular boss, and cyclic annular boss inboard is equipped with the magnetic core, and the cyclic annular boss outside is equipped with the magnetic shield, and the hanging wire colludes including a guide piece, and the guide piece middle part makes progress the punching press and forms one and collude the body. The utility model discloses a base is followed, the wire winding, soldering tin, the point is glued, the equipment, the aftertreatment is printed, the test or the packing, mainly to wire winding and soldering tin, the equipment realizes full automation, can realize the full-automatic wire winding technology of various line footpaths, greatly reduced processing cost, the stability of plastic base design boss assurance electrical property, the internal diameter location magnetic core, the external diameter location magnetic shield, the fashioned boss size of plastic can reach within 0.05mm precision, greatly improve the success rate of automatic equipment; the magnetic shield design achieves very stable control over the electrical characteristics of the product.

Description

Round closed magnetic circuit chip inductor

technical field

The utility model relates to a chip inductor, in particular to a circular closed magnetic circuit chip inductor with reasonable structure, stability and safety.

Background technique

Chinese patent application number: 200910189837.4, discloses an inductor, especially relates to an inductor capable of withstanding relatively large current and having good electrical characteristics and a manufacturing method thereof. It includes a magnetic core, on which an enameled wire is wound, and the enameled wire is conductively connected with a welding pad or a lead pin, and the outer side of the magnetic core is filled with a magnetic powder resin mixture. The manufacturing method described above can be applied to chip inductors as well as plug-in inductors.

Chinese patent application number: 201220371044.1, discloses a chip inductor, including a ring-shaped ferrite and a copper enameled coil, the thickness of the ring-shaped ferrite is 1-2mm, the inner diameter is 5-8mm, and the outer The diameter is 10-15mm. The copper enamelled coil is wound on the circular ferrite. The outer side of the copper enameled coil is wrapped with an epoxy resin layer, and the outer wall of the epoxy resin layer is adhered with a metal powder layer.

The above-mentioned utility model has a complex structure, and the enameled wire and the chip are unstable when they are connected.

Utility model content

The purpose of the utility model is to overcome the above-mentioned defects of the prior art and provide a circular closed magnetic circuit chip inductor with reasonable structure, stability and safety.

In order to achieve the above purpose, the technical solution provided by the utility model is as follows: a round closed magnetic circuit patch inductor, including a base, a pair of corners of the base are respectively provided with hanging wire hooks, and the middle part of the base is provided with a ring A magnetic core is arranged inside the annular boss, and a magnetic cover is arranged outside the annular boss.

The front view of the base is a rectangle with rounded corners on one corner and chamfered corners on the other. Hanging wires are hooked on the chamfered corners.

The wire hanging hook includes a guide piece, and the middle part of the guide piece is punched upward to form a hook body.

The magnetic core is a cylindrical structure, and an annular groove is arranged on the magnetic core.

The magnetic cover is arranged on the upper end of the base, and the magnetic cover is an annular cylindrical structure. There are two notches on the side wall of the magnetic cover, and the positions of the two notches are symmetrical to the center of the magnetic cover.

An enamelled copper wire is wound on the annular groove of the magnetic core.

The base is provided with a copper guide piece, a part of the copper guide piece is covered inside the base, and a part is exposed on the surface of the base, and the base is a plastic base.

The utility model has the advantages of: through connecting the base, winding, soldering, dispensing, assembling, post-processing printing, testing or packaging, it is mainly aimed at winding and soldering, assembling, and realizes complete automation.

1. The hanging wire end of the plastic base is designed with a hook to realize the automatic winding process of various wire diameters, which greatly reduces the processing cost; the bonding method of the enamelled copper wire and the copper guide piece of the plastic base can achieve better Consistency, compared with the traditional winding method, the outer diameter is smaller, and the automation effect of the conduction and connection between the enameled copper wire and the copper guide piece is better;

2. The wire hook of the copper guide on the plastic base can be designed into hooks and stop points of various shapes by using the copper body to realize automation; the bonding method between the copper guide and the enamelled copper: can be tin furnace Dip welding, laser welding, high-voltage butt welding, gas welding, etc., can all be automated;

3. The boss design of the plastic base ensures electrical stability, the inner diameter locates the magnetic core, the outer diameter locates the magnetic cover, and the size of the plastic molded boss can reach the accuracy within 0.05mm, which greatly improves the success rate of automatic assembly;

4. The magnetic cover is designed with a small upper and a lower large circular structure to achieve a very stable control of the electrical characteristics of the product;

The design of the above structure and method can be applied to various sizes in proportion.

Description of drawings

Fig. 1 is the perspective view of the utility model circular closed magnetic circuit patch inductor;

Fig. 2 is a schematic diagram of the base and the annular boss of the utility model circular closed magnetic circuit patch inductor;

3 is a schematic diagram of the magnetic core of the utility model circular closed magnetic circuit patch inductor;

Fig. 4 is a schematic diagram of the magnetic cover of the circular closed magnetic circuit patch inductor of the present invention.

Detailed ways

The technical solution of the utility model will be further described below in conjunction with the accompanying drawings and preferred embodiments.

As shown in Figure 1 and Figure 2, a circular closed magnetic circuit patch inductor described in the present invention includes a base 1, the middle part of the base 1 is provided with an annular boss 2, and the inner side of the annular boss 2 is A magnetic core 3 is provided, and a magnetic cover 4 is provided outside the annular boss.

The front view of the base 1 is a rectangle, wherein the upper right corner and the lower left corner are provided with rounded corners 11, the upper left corner and the lower right corner are chamfered 12, and the two chamfered corners 12 are respectively provided with an upper hanging hook 13 and a lower hanging wire. Tick 14.

The upper hook 13 and the lower hook 14 all include a guide piece 15, and the middle part of the guide piece 15 is punched upwards to form a hook body 16. The hook body 16 forms a through groove 17 in the middle part of the guide piece 15 due to upward bending.

The magnetic core 3 has a cylindrical structure, and an annular groove 31 is provided on the magnetic core 3 , and an enamelled copper wire (not shown in the drawings) is wound on the annular groove 31 of the magnetic core 3 .

The magnetic cover 4 is arranged on the upper end of the base 1, and the bottom of the side wall of the magnetic cover 4 is close to the outer diameter of the annular boss 2. The magnetic cover 4 is an annular cylindrical structure, and the upper part of the side wall of the magnetic cover 4 is provided with two notches 41. , the positions of the two notches 41 are symmetrical to the center of the magnetic cover 4 .

The base 1 is provided with a copper guide piece (not shown in the drawings), a part of the copper guide piece covers the inside of the base 1 , and a part is exposed on the surface of the base 1 .

What has been described above is only the principle and preferred embodiments of the present utility model. It should be pointed out that those skilled in the art can make some modifications and improvements without departing from the principle of the utility model, which should also be regarded as belonging to the protection scope of the utility model.

Claims (7)

1. a round closed magnetic circuit chip inductor, comprises a pedestal, it is characterized in that: described pedestal is wherein respectively equipped with hanging wire hook on pair of horns, and pedestal middle part is provided with annular boss, and annular boss inner side is provided with magnetic core, and annular boss outside is provided with magnetic cover.

2. round closed magnetic circuit chip inductor according to claim 1, is characterized in that: described pedestal front view is a rectangle, and wherein pair of horns has fillet, the structure that another diagonal angle is chamfering, and hanging wire hooks and is located in chamfering.

3. round closed magnetic circuit chip inductor according to claim 1, is characterized in that: described hanging wire hooks and comprises a guide card, and guide card middle part upwards punching press forms a hook body.

4. round closed magnetic circuit chip inductor according to claim 1, is characterized in that: described magnetic core is cylindrical-shaped structure, magnetic core is provided with a ring-like groove.

5. round closed magnetic circuit chip inductor according to claim 1, is characterized in that: described magnetic cover is arranged at pedestal upper end, magnetic cover is ring-type cylindrical structure, and magnetic cover sidewall has two notches, and two notch positions are Central Symmetry on magnetic cover.

6. round closed magnetic circuit chip inductor according to claim 1, is characterized in that: on the ring-like groove of described magnetic core, be wound with enamel covered wire.

7. round closed magnetic circuit chip inductor according to claim 1, is characterized in that: described pedestal is provided with copper guide card, and a copper guide card part is coated on base interior, and a part is exposed to base-plates surface.