CN212032836U

CN212032836U - Ultralow impedance hot press molding inductor

Info

Publication number: CN212032836U
Application number: CN202020837119.5U
Authority: CN
Inventors: 饶金火; 林伙利; 王俊文
Original assignee: SANJIRUI TECHNOLOGY (SUZHOU) CO LTD
Current assignee: SANJIRUI TECHNOLOGY (SUZHOU) CO LTD
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2020-11-27
Anticipated expiration: 2030-05-19

Abstract

The utility model discloses an ultra-low impedance hot press molding inductor, which comprises an inductor coated insulator and a group of inductor functional components embedded in the inductor coated insulator; the inductance functional assembly is formed by combining a magnetic core body and a flat coil, the inductance coating insulator coats the peripheral part of the inductance functional assembly in the hot press molding state of the inductance coating insulator and the inductance functional assembly, and two pin parts of the flat coil protrude out of one side end face of the inductance coating insulator. The utility model discloses replace modes such as circular coil with flat coil, greatly improved inductance device's insulating properties, promoted the stability that inductance device used. Just the utility model discloses an inductance device can bear the maximum current higher, low, the furthest ground of alternating current loss in its practical application has promoted the holistic energy-conserving effect of device.

Description

Ultralow impedance hot press molding inductor

Technical Field

The utility model relates to an integrated into one piece inductance particularly, relates to a hot briquetting inductance of ultralow impedance belongs to inductance processing technology field.

Background

The inductor is one of the most common components in electronic devices and one of the important components in circuits, and is widely used in various circuits to achieve the functions of filtering, storing energy, matching and resonating.

Along with the continuous development of computer communication, artificial intelligence and other technologies in recent years, the updating iteration of various hardware devices is increasingly frequent, and the design and manufacture of various hardware devices also begin to develop towards the trend of integration and miniaturization. Taking manufacturing and processing of the current vehicle-mounted electrical component and part of the cloud server as an example, because requirements of the equipment on external dimensions and internal structures are strict, and the internal space of the hardware equipment needs to be fully utilized during design, the arrangement of the internal components is tighter, and the requirements on the power type inductor used in the equipment are more severe.

At present, most of common inductors in the market are manufactured by adopting a cold pressing process, and coils used in the inductors are almost common coils with circular sections. The inductor manufactured by matching the processing technology with the coil of the type has poor reliability and high Electro Magnetic Interference (EMI), and the inductor has the problems of low bearable maximum current, high alternating current loss, high energy consumption of products and the like in practical use.

Secondly, most of power type inductor devices in the prior art are horizontal and special-shaped structures, and such structures are not only difficult to realize automatic processing operation, but also have too high occupancy rate to space, seriously restrict the overall layout of the circuit and influence the simplified design of the circuit.

Just because the prior art has the defects, several improved production processes of the high-current power inductor are also provided at present, but the practical application stages of the processes still have the problems of high manufacturing difficulty, high production cost, non-ideal practical use effect and the like.

In summary, how to provide a brand-new ultra-low impedance hot press molding inductor based on various prior arts, which can not only ensure that the inductor is applicable to various application scenarios with higher requirements and has higher reliability, but also further improve the manufacturing process of devices, and realize the automation and mass industrial production of the molding inductor, becomes a problem to be solved by technical personnel in the field at present.

Disclosure of Invention

In view of the above-mentioned defects in the prior art, the present invention provides an integrally formed, ultra-low impedance inductor formed by hot pressing, which is as follows.

An ultra-low impedance hot press molding inductor comprises an inductor coated insulator and a group of inductor functional components embedded in the inductor coated insulator;

the inductance functional assembly is formed by combining a magnetic core body and a flat coil, the magnetic core body comprises a square base, the upper end face of the square base is connected with a coil bulge, the square base and the coil bulge are integrally formed, the coil part of the flat coil is sleeved on the coil bulge, and two pin parts of the flat coil are bent and attached to the outer surface of the square base;

and under the hot press molding state of the inductor coating insulator and the inductor functional component, the inductor coating insulator coats the peripheral part of the inductor functional component, and two pin parts of the flat coil protrude out of one side end face of the inductor coating insulator.

Preferably, the magnetic core body is formed by cold pressing magnetic powder; the bottom surface of the square base of the magnetic core body is provided with a positioning slot hole which is matched with the positioning bulge on the processing mould and used for finishing the integral positioning of the magnetic core body; the coil bulge is formed in the center of the upper end face of the square base of the magnetic core body, the whole coil bulge is cylindrical, the diameter of the coil bulge is matched with the inner diameter of the coil part of the flat coil, and the height of the coil bulge is matched with the whole height of the flat coil.

Preferably, two opposite step surfaces are arranged on the periphery of the square base of the magnetic core body, and the two step surfaces are symmetrically arranged; each step surface is provided with two sections of turns, each turn comprises a middle section part positioned in the middle and side section parts positioned at two sides, the end surfaces of the two side section parts on the same step surface are coplanar, and the middle section part on the same step surface protrudes out of the side section parts; the width of the side section part on the step surface is matched with the width of a flat wire rod wound to form the flat coil, and the height difference between the end surface of the middle section part and the end surface of the side section part on the same step surface is matched with the thickness of the flat wire rod wound to form the flat coil.

Preferably, the turning points of the outer circumferential plane of the magnetic core body are provided with smoothly-transiting chamfer cambered surfaces.

Preferably, the flat coil is formed by winding and processing a flat wire or by flattening and trimming two end pins after winding and forming a round section wire; the wire of the flat coil is self-adhesive wire or non-self-adhesive wire, and the cross section of the wire is flat.

Preferably, the equivalent number of turns of the coil part of the flat coil is greater than 1; the two lead parts of the flat coil extend in the same direction, and the bending forming directions of the two lead parts are consistent.

Preferably, each of the lead portions of the flat coil is bent by three sections, and each of the lead portions is attached to the lower end surface of the square base of the magnetic core body and the side section portions of the step surfaces on the two sides of the square base.

The utility model has the advantages that the following aspects are mainly embodied:

the utility model provides an integrated into one piece formula, super low impedance's hot briquetting inductance, inside adoption flat coil have replaced the circular cross section coil that uses in the traditional handicraft, have greatly improved inductance device's insulating properties, have promoted the stability that inductance device used. And the utility model discloses an inductance part has higher inductance value, can bear the maximum current of valence height, and low, the furthest ground of alternating current loss in its practical application has promoted the holistic energy-conserving effect of inductance part.

The utility model discloses an inductance device is whole to be cube structure and its two pins all set up in the homonymy surface of product, is different from horizontal among the prior art, dysmorphism structure, has reduced the holistic volume of device and occupation space for its flexibility that sets up in various circuit structure, electrical components has obtained the assurance. And the more regular shape also provides convenience for the design and production of corresponding die-casting molds, and increases the number of inductor devices which can be molded in the same mold. And the utility model discloses well inductance device's structural design also makes the most of steps in the inductance course of working all can utilize automatic means to accomplish, has realized standardization, the flow of inductance production, has greatly improved inductance processing enterprise's production efficiency.

Finally, the utility model discloses also for other relevant schemes in the same field provide the reference basis, can extend the extension with this, apply to this type of structure and method among other inductance device's technical scheme, have very wide application prospect.

The following detailed description is made of specific embodiments of the present invention with reference to the accompanying drawings, so as to make the technical solution of the present invention easier to understand and master.

Drawings

FIG. 1 is a schematic structural view of the magnetic core and the flat coil of the present invention in a half-coupled state;

FIG. 2 is a schematic structural view of the magnetic core and the pancake coil of the present invention in a half-coupled state at another viewing angle;

FIG. 3 is a schematic structural view of the magnetic core and the flat coil of the present invention in a combined state;

FIG. 4 is a schematic structural diagram of the magnetic core and the pancake coil in a combined state at another angle of view according to the present invention;

fig. 5 is a schematic view of the external overall structure of the finished product of the inductor according to the present invention.

Wherein: 1. the inductor is covered with an insulator; 2. a magnetic core body; 21. a square base; 22. a coil protrusion; 23. a step surface; 3. a flat coil; 31. a coil section; 32. a pin part.

Detailed Description

The utility model provides an integrated into one piece formula, super low impedance's hot briquetting inductance specifically as follows.

As shown in fig. 1 to 5, an ultra-low impedance hot press molding inductor includes an inductor-coated insulator 1 and a set of inductor functional components embedded inside the inductor-coated insulator 1.

Inductance function component is formed by the combination of a magnetic core body 2 and a flat coil 3, magnetic core body 2 includes a square base 21, the up end of square base 21 is connected with a coil arch 22, square base 21 with the two integrated into one piece of coil arch 22, the coil portion 31 cover of flat coil 3 is located on the coil arch 22, two pin portions 32 of flat coil 3 buckle to paste and cover in the surface of square base 21.

In the hot press molding state of the inductor coated insulator 1 and the inductor functional component, the inductor coated insulator 1 is coated on the outer periphery of the inductor functional component, and the two pin portions 32 of the flat coil 3 protrude from one side end face of the inductor coated insulator 1.

The magnetic core body 2 is formed by cold pressing magnetic powder. The bottom surface of the square base 21 of the magnetic core body 2 is provided with a positioning slot hole which is matched with the positioning bulge on the processing mould and used for finishing the integral positioning of the magnetic core body 2. The central position of the square base 21 upper end face of the magnetic core body 2 is molded with the coil bulge 22, the coil bulge 22 is integrally cylindrical, the diameter of the coil bulge 22 is matched with the inner diameter of the coil part 31 of the flat coil 3, and the height of the coil bulge 22 is matched with the integral height of the flat coil 3.

The periphery of the square base 21 of the magnetic core body 2 is provided with two opposite step surfaces 23, and the two step surfaces 23 are symmetrically arranged. Each step surface 23 is provided with two sections of turns, and comprises a middle section part positioned in the middle and side section parts positioned on two sides, the two side section parts on the same step surface 23 have coplanar end surfaces, and the middle section part on the same step surface 23 protrudes out of the side section parts. The width of the side section part on the step surface 23 is matched with the width of a flat wire rod wound to form the flat coil 3, and the height difference between the end surface of the middle section part on the step surface 23 and the end surface of the side section part is matched with the thickness of the flat wire rod wound to form the flat coil 3.

In order to facilitate subsequent assembly operation, the turning positions of the outer circumferential plane of the magnetic core body 2 are provided with chamfer cambered surfaces in smooth transition. Equally, consider the follow-up actual use of product, the utility model discloses an inductance finished product is provided with the chamfer cambered surface in the plane turn department of periphery equally.

The flat coil 3 can be formed by winding and processing a flat wire or by flattening and trimming two end lead-out pins after winding and forming a round section wire. The wire of the flat coil 3 is self-adhesive wire or non-self-adhesive wire, and the cross section of the wire is flat. In the present embodiment, the flat coil 3 is formed by winding a flat wire, and it should be emphasized and explained that, in the technical solution of the present invention, the flat wire is actually a preferable choice of components. On the premise of not changing the whole structure of the inductor in the scheme, the flat wire can be replaced by a common wire with a circular section. Although the use effect of the technical scheme of the invention may be affected after the material is replaced, such non-preferred schemes are still at an advanced level compared with the prior art depending on other hardware structures of the technical scheme.

The equivalent number of turns of the coil portion 31 of the flat coil 3 should be guaranteed to be greater than 1 in consideration of the effect of use.

In the hardware structure of the present invention, the two lead portions 32 of the flat coil 3 are extended in the same direction, and the bending directions of the two lead portions are the same. In this embodiment, each of the lead portions 32 of the flat coil 3 is bent by three segments, and each of the lead portions is attached to the lower end surface of the square base 21 of the magnetic core body 2 and the side segment portions of the step surfaces 23 on both sides of the square base 21.

Furthermore, the utility model discloses well inductance function component's combination formula sets up the form, also facilitates for the use of reality, and the operator can select the magnetic core body 2 and the pancake coil 3 of different materials, different specifications to make and have more corresponding, the inductance finished product of purposiveness according to the use needs of difference.

Furthermore, the utility model discloses also for other relevant schemes in the same field provide the reference basis, can extend the extension with this, apply to this type of structure and method among other inductance device's technical scheme, have very wide application prospect.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Finally, it should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should integrate the description, and the technical solutions in the embodiments can be appropriately combined to form other embodiments understood by those skilled in the art.

Claims

1. An ultralow impedance hot briquetting inductance which characterized in that: the inductor comprises an inductor-coated insulator (1) and a group of inductor functional components embedded in the inductor-coated insulator (1);

the inductance functional component is formed by combining a magnetic core body (2) and a flat coil (3), wherein the magnetic core body (2) comprises a square base (21), the upper end face of the square base (21) is connected with a coil bulge (22), the square base (21) and the coil bulge (22) are integrally formed, a coil part (31) of the flat coil (3) is sleeved on the coil bulge (22), and two pin parts (32) of the flat coil (3) are bent and attached to the outer surface of the square base (21);

under the hot press molding state of the inductor coating insulator (1) and the inductor functional component, the inductor coating insulator (1) coats the periphery of the inductor functional component, and two pin parts (32) of the flat coil (3) protrude out of one side end face of the inductor coating insulator (1).

2. The ultra-low impedance hot press molding inductor according to claim 1, wherein: the magnetic core body (2) is formed by cold pressing magnetic powder;

the bottom surface of the square base (21) of the magnetic core body (2) is provided with a positioning slot hole which is matched with the positioning bulge on the processing mould and used for finishing the integral positioning of the magnetic core body (2);

the central point of the square base (21) up end of the magnetic core body (2) puts the shaping and has coil arch (22), coil arch (22) is whole cylindrically, the diameter of coil arch (22) with the internal diameter phase-match of flat coil (3) coil portion (31), the height of coil arch (22) with the whole height phase-match of flat coil (3).

3. The ultra-low impedance hot press molding inductor according to claim 2, wherein: the periphery of the square base (21) of the magnetic core body (2) is provided with two opposite step surfaces (23), and the two step surfaces (23) are symmetrically arranged;

each step surface (23) is provided with two sections of turns, and comprises a middle section part positioned in the middle and side section parts positioned at two sides, the end surfaces of the two side section parts on the same step surface (23) are coplanar, and the middle section part on the same step surface (23) protrudes out of the side section parts;

the width of the side section part on the step surface (23) is matched with the width of a flat wire rod wound to form the flat coil (3), and the height difference between the end surface of the middle section part on the same step surface (23) and the end surface of the side section part is matched with the thickness of the flat wire rod wound to form the flat coil (3).

4. The ultra-low impedance hot press molding inductor according to claim 3, wherein: the turning positions of the peripheral plane on the magnetic core body (2) are provided with chamfer cambered surfaces in smooth transition.

5. The ultra-low impedance hot press molding inductor according to claim 3, wherein: the flat coil (3) is formed by winding and processing flat wires or by flattening and trimming two end pins after winding and forming round section wires;

the wire of the flat coil (3) is self-adhesive wire or non-self-adhesive wire, and the cross section of the wire is flat.

6. The ultra-low impedance hot press molding inductor according to claim 5, wherein: the equivalent number of turns of a coil part (31) of the flat coil (3) is more than 1;

the two pin parts (32) of the flat coil (3) extend in the same direction, and the bending forming directions of the two pin parts are consistent.

7. The ultra-low impedance hot press molding inductor according to claim 6, wherein: each lead part (32) of the flat coil (3) is bent by three sections, and each lead part is attached to the lower end face of the square base (21) of the magnetic core body (2) and the side section parts of the step faces (23) on the two sides of the square base (21).