CN201311810Y - Sectional-type mould casting inductor - Google Patents

Abstract

The utility model relates to a segmented mold casting inductor, which belongs to the technical field of basic electrical components. It includes a metal coil, and its characteristics are: it also includes a base and a covering structure. The base is provided with a central column. The metal coil is provided with a hollow part and two endpoints. The metal coil is arranged on the base. The hollow part and the central column are mutually nested. The cladding structure is connected to the base, the metal coil is placed in the cladding structure, and the two ends extend out of the cladding structure. Therefore, in the combined forming process of the covering structure, the base and the center column can provide the best supporting force and positioning effect for the overall forming of the inductor, avoiding the extrusion that is easily caused during the forming process of the covering structure , Deformation and deterioration of inductance characteristics. At the same time, the central column formed by high-density magnetic material can further increase the magnetic flux of the metal coil and provide better inductance characteristics of the metal coil.

Description

Segmented die-cast inductors

technical field

The utility model relates to an electronic device, in particular to a segmented die casting inductor, which belongs to the technical field of basic electrical components.

Background technique

Inductor is an important component in the circuit, which can achieve the functions of filtering, energy storage, matching and resonance. With the miniaturization, portability and high-density assembly of electronic products, inductive components have developed rapidly, and under the consideration of electromagnetic compatibility, the elimination of electromagnetic interference of electronic products has become a basic requirement for electronic products. Many countries have stipulated Restricted by laws and regulations, only in compliance with the regulations can they be sold, and more emphasis is placed on the demand and application of inductance.

The current manufacturing method of inductance components is to directly place the coil on the magnetic material in the mold, then fill and cover it with the magnetic material, and then die-cast it at one time. Since the coil is not fixed, it is easy to be displaced due to extrusion during filling. In addition, because the pressure of the high-pressure process is about 15 to 20 tons per square inch, the coil is easily deformed or damaged when directly subjected to such high pressure, which greatly reduces the yield and performance of the inductor component manufacturing.

Therefore, the industry needs a new type of inductor that can strengthen the coil and assist in increasing the positioning when the magnetic material is combined.

Contents of the invention

The purpose of the utility model is to overcome the above problems in the prior art and provide a segmented molded inductor.

In order to realize the purpose of the utility model, the segmented die-casting inductance, the segmented die-casting inductance includes a metal coil, and is characterized in that: it also includes a base and a cladding structure, the base is provided with a center column, and the metal coil is provided with a hollow part and At the two ends, the metal coil is set on the base, the hollow part and the center column are nested with each other, the covering structure is connected with the base, the metal coil is placed in the covering structure, and the two ends extend out of the covering structure.

Furthermore, in the segmented molded inductor mentioned above, the conductive strips are connected to the terminals.

Furthermore, in the segmented molded inductor mentioned above, at least two openings are provided on the base, and the ends of the metal coil protrude through the openings.

Still further, in the segmented molded inductor mentioned above, side walls are distributed around the base, and openings are arranged on the side walls.

Adopting the technical scheme of the utility model, in the combined forming process of the covering structure, the base and the center column can provide the best supporting force and positioning effect for the overall forming of the inductor, avoiding the easy Defects caused by extrusion and deformation that deteriorate the inductance characteristics. At the same time, the central column formed by high-density magnetic material can further increase the magnetic flux of the metal coil and provide better inductance characteristics of the metal coil.

The objects, advantages and features of the present invention will be illustrated and explained by the following non-limiting description of preferred embodiments, which are given by way of example only with reference to the accompanying drawings.

Description of drawings

Fig. 1 is the three-dimensional perspective view of the utility model embodiment one;

Fig. 2 is the exploded view of the utility model embodiment one;

Fig. 3 is a schematic diagram of forming the base in Embodiment 1 of the utility model;

Fig. 4 is a schematic diagram of the forming of the covering structure in the first embodiment of the utility model;

Fig. 5 is a three-dimensional perspective view of Embodiment 2 of the utility model;

Fig. 6 is an exploded view of the second embodiment of the utility model.

Detailed ways

Segmented die-cast inductors include metal coils, including a base and a covering structure. The base is provided with a central column. The metal coil is provided with a hollow part and two terminals. The metal coil is set on the base. The hollow part It is nested with the center column, the cladding structure is connected with the base, the metal coil is placed in the cladding structure, and the two ends extend out of the cladding structure for connecting to external circuits respectively. Conductive strips are connected to the terminals to facilitate stable connection to the external circuit.

Furthermore, at least two openings are provided on the base, and the ends of the metal coil protrude through the openings. In order to ensure the stability of the structure, side walls are distributed around the base, and openings are arranged on the side walls.

Embodiment one

As shown in FIG. 1 , the segmented molded inductor includes a base 10 formed through a first-stage high-pressure process, a metal coil 11 and a covering structure 12 formed through a second-stage high-pressure process.

Specifically, referring to FIG. 2 , the central area 100 of the base 10 formed by the high-pressure process in the first stage includes a center pillar 101 . The base 10 is substantially formed by applying a high-pressure process to the first magnetic material. The first magnetic material is usually a substance such as iron powder, alloy powder or non-alloy powder. That is, as shown in Figure 3, the first magnetic material is inserted into the base mold 13 with a pre-designed shape, and after the base mold fixes its shape, a high pressure is applied to press the first magnetic material as shown in Figure 2 The base 10 includes a flat plate 102 and side walls 103 .

Looking further, the metal coil 11 includes two ends 110 , 111 and a hollow portion 112 , wherein the two ends 110 , 111 extend to both sides along the direction perpendicular to the central axis 113 of the metal coil 11 . The metal coil 11 is made of a copper wire or other metals wound into a coil, and of course a plurality of wires can be wound into a coil structure to enhance its inductance characteristics. The central column 101 of the base 10 is passed through the hollow portion 112 of the metal coil 11 .

When entering the second stage, as shown in FIG. 4 , a high voltage is applied to the second magnetic material placed in the package molding mold 14 and combined with the base 10 and the metal coil 11 to form the covering structure 12 . Specifically, the cladding structure 12 includes a second magnetic material, which is generally iron powder or alloy powder, and then mixed with non-metal powder such as colloid, adhesive, etc. to make it. The base 10 further includes two openings 104a, 104b on the side wall 103, the two ends 110, 111 of the metal coil 11 are respectively formed with conductive sheets 114, 115, through the openings 104a, 104b, the metal coil 11 protrudes from the conductive sheet 114 , 115 are further connected to an external circuit to improve the efficiency of the inductance structure to perform an inductance.

Since the above-mentioned high-pressure process of forming the base 10 using iron powder, alloy powder or non-alloy powder adopts a pressure of about 1 ton/square inch or even as high as 25 tons/square inch, its density is greatly increased, so the first The base 10 formed by the stage high-pressure process and the center column 101 passing through the hollow part 112 can provide support for the positioning of the metal coil 11 in the second stage high-pressure process of forming the cladding structure, so as to prevent the metal coil 11 from being exposed to high pressure during this process. Deformed or damaged during the process. At the same time, because the center column 101 can be used as a high-density iron core, the inductance characteristics of the segmented molded inductor can be further improved. Therefore, the support force, positioning function and inductance characteristics of the segmented die-casting inductor are greatly improved.

Embodiment two

As shown in FIGS. 5 and 6 , the segmented molded inductor includes a base 20 , a metal coil 21 and a covering structure 22 . The central area 200 of the base 20 includes a central column 201 , and the central column 201 of the base 20 passes through the hollow portion 212 of the metal coil 21 . The base 20 is also provided with a flat plate 202 on which two openings 202a and 202b are formed. The metal coil 21 includes two ends 210 , 211 and a hollow portion 212 , wherein the two ends 210 , 211 extend along a direction parallel to the central axis 213 of the metal coil 21 . The cladding structure 22 is combined on the base 20 and the metal coil 21 . The two ends 210, 211 of the metal coil 21 pass through the two openings 202a, 202b of the base 20 and protrude outward respectively.

It can be seen from the above text description and in conjunction with the accompanying drawings that after the utility model is adopted, in the combined forming process of the covering structure, the base and the center column can provide the best supporting force and positioning effect for the overall forming of the inductor , avoiding the defect that the inductance characteristics are deteriorated due to extrusion and deformation that are easily caused during the formation of the cladding structure. At the same time, the central column formed by high-density magnetic material can further increase the magnetic flux of the metal coil and provide better inductance characteristics of the metal coil.

Of course, the above are only specific application examples of the utility model, and do not constitute any limitation to the protection scope of the utility model. In addition to the above-mentioned embodiments, the utility model can also have other implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection claimed by the utility model.

Claims (4)

1. Segmented molded inductors, including metal coils, are characterized in that they also include a base and a covering structure. The base is provided with a central column, and the metal coil is provided with a hollow part and two endpoints. The metal coil is set on the base. , the hollow part and the center column are nested with each other, the cladding structure is connected with the base, the metal coil is placed in the cladding structure, and the two end points protrude from the cladding structure. 2. The segmented molded inductor according to claim 1, characterized in that: said terminals are connected with conductive sheets. 3. The segmented molded inductor according to claim 1, characterized in that: said base is provided with at least two openings, and the ends of the metal coil protrude through the openings. 4. The segmented molded inductor according to claim 3, characterized in that: side walls are distributed around the base, and openings are arranged on the side walls.

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