CN219163138U

CN219163138U - Combined inductor

Info

Publication number: CN219163138U
Application number: CN202320180186.8U
Authority: CN
Inventors: 秦佳意; 邓佳佳
Original assignee: Zhongshan She Ke Electronic Co ltd
Current assignee: Zhongshan She Ke Electronic Co ltd
Priority date: 2023-02-07
Filing date: 2023-02-07
Publication date: 2023-06-09
Anticipated expiration: 2033-02-07

Abstract

The utility model discloses a combined inductor, which comprises a first magnetic powder block, a second magnetic powder block and a magnetic powder cover plate, wherein the first magnetic powder block, the second magnetic powder block and the magnetic powder cover plate are sequentially arranged along the same direction, and are made of magnetic powder; the side surface of the first magnetic powder block, which is close to the second magnetic powder block, is provided with a first groove, two first openings are formed in the bottom surface of the first magnetic powder block by the first groove, a first coil is placed in the first groove, and two pins of the first coil extend out of the two first openings respectively; the side surface, close to the magnetic powder cover plate, of the second magnetic powder block is provided with a second groove, two second openings are formed in the bottom surface of the second magnetic powder block by the second groove, a second coil is placed in the second groove, and two pins of the second coil extend out of the two second openings respectively; the first magnetic powder block, the second magnetic powder block and the magnetic powder cover plate are combined together through hot pressing. The utility model can simplify the manufacturing process and improve the production efficiency.

Description

Combined inductor

Technical Field

The utility model relates to the technical field of inductors, in particular to a combined inductor.

Background

Currently, there are inductors, such as common mode inductors, formed by integrating a magnet with a plurality of coils. These inductors are generally manufactured by separately manufacturing two independent and complete inductors, and then hot-pressing the two independent inductors together, which results in a relatively complicated whole manufacturing process.

Disclosure of Invention

The utility model provides a combined inductor which can simplify the manufacturing process and improve the production efficiency.

In order to solve the problems, the utility model adopts the following technical scheme:

the embodiment of the utility model provides a combined inductor, which comprises a first magnetic powder block, a second magnetic powder block and a magnetic powder cover plate, wherein the first magnetic powder block, the second magnetic powder block and the magnetic powder cover plate are sequentially arranged along the same direction, and the first magnetic powder block, the second magnetic powder block and the magnetic powder cover plate are all made of magnetic powder; the side surface of the first magnetic powder block, which is close to the second magnetic powder block, is provided with a first groove, two first openings are formed in the bottom surface of the first magnetic powder block by the first groove, a first coil is placed in the first groove, and two pins of the first coil extend out of the two first openings respectively; the side surface, close to the magnetic powder cover plate, of the second magnetic powder block is provided with a second groove, two second openings are formed in the bottom surface of the second magnetic powder block by the second groove, a second coil is placed in the second groove, and two pins of the second coil extend out of the two second openings respectively; the first magnetic powder block, the second magnetic powder block and the magnetic powder cover plate are combined together through hot pressing.

In some embodiments, the first coil and the second coil are each integrally bent from a sheet of copper.

In some embodiments, the first coil and the second coil are each in a "U" shape, and the first groove and the second groove are each in a "U" shape.

In some embodiments, the two pins of the first coil are provided with bending parts far away from each other, and the two pins of the second coil are also provided with bending parts far away from each other; the bending part of the first coil is positioned on the bottom surface of the first magnetic powder block, and the bending part of the second coil is positioned on the bottom surface of the second magnetic powder block.

In some embodiments, the bottom surfaces of the first magnetic powder block, the second magnetic powder block and the magnetic powder cover plate are provided with bumps which are in butt joint with each other; the bump on the first magnetic powder block is positioned between two pins of the first coil, and the bump on the second magnetic powder block is positioned between two pins of the second coil.

The utility model has at least the following beneficial effects: when the combined inductor is manufactured, the first magnetic powder block, the second magnetic powder block and the magnetic powder cover plate are manufactured firstly, then the first coil and the second coil are respectively placed into the first groove of the first magnetic powder block and the second groove of the second magnetic powder block, and finally the first magnetic powder block, the second magnetic powder block and the magnetic powder cover plate are combined together through hot pressing, so that the final combined inductor is formed, two independent and complete inductors are not required to be manufactured independently, the manufacturing process can be simplified, and the production efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of a combined inductor before hot pressing according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a combined inductor after hot press molding according to an embodiment of the present utility model.

Wherein, the reference numerals are as follows:

a first magnetic powder block 100, a first groove 110, a first opening 120;

a second magnetic powder block 200, a second groove 210, a second opening 220;

a magnetic powder cover plate 300;

a first coil 410, a second coil 420, and a bending portion 430;

bumps 50.

Detailed Description

The disclosure provides a thorough understanding of various embodiments of the disclosure as defined by the claims and their equivalents, with reference to the following description of the drawings. The description includes various specific details to aid in understanding, but these details should be regarded as merely exemplary. Accordingly, one of ordinary skill in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope and spirit of the present disclosure. In addition, descriptions of the functions and constructions of the disclosed embodiments may be omitted for clarity and conciseness.

The terms and words used in the following description and claims are not limited to literal meanings, but are only used by the inventors to enable a clear and consistent understanding of the disclosure. Thus, it will be apparent to those skilled in the art that the following descriptions of the various embodiments of the present disclosure are provided for illustration only and not for the purpose of limiting the disclosure as defined by the appended claims and their equivalents.

The terms "having," "can have," "including," or "can include" as used in various embodiments of the present disclosure indicate the presence of a corresponding function, operation, element or the like disclosed, but are not limited to additional one or more functions, operations, elements or the like. Furthermore, it should be understood that the terms "comprises" or "comprising," when used in various embodiments of the present disclosure, are intended to specify the presence of stated features, integers, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, operations, elements, components, or groups thereof.

It will be understood that when an element (e.g., a first element) is "connected" to another element (e.g., a second element), the element can be directly connected to the other element, or there can be an intervening element (e.g., a third element) between the element and the other element.

The embodiment of the utility model provides a combined inductor, as shown in fig. 1, which comprises a first magnetic powder block 100, a second magnetic powder block 200 and a magnetic powder cover plate 300 which are sequentially arranged along the same direction, wherein the first magnetic powder block 100, the second magnetic powder block 200 and the magnetic powder cover plate 300 are arranged along the same wind direction, so that later hot pressing is facilitated. The first magnetic powder block 100, the second magnetic powder block 200, and the magnetic powder cover plate 300 are all made of magnetic powder, and specifically may be pressed by a mold. The first magnetic powder block 100 is provided with a first groove 110 near the side of the second magnetic powder block 200, the first groove 110 forms two first openings 120 at the bottom of the first magnetic powder block 100, a first coil 410 is placed in the first groove 110, the shape and size of the first groove 110 are respectively matched with those of the first coil 410, and two pins of the first coil 410 are respectively extended out of the two first openings 120 to be connected with power supply. The second magnetic powder block 200 is provided with a second groove 210 near the side of the magnetic powder cover plate 300, the second groove 210 forms two second openings 220 on the bottom surface of the second magnetic powder block 200, a second coil 420 is placed in the second groove 210, the shape and the size of the second groove 210 are respectively matched with those of the second coil 420, and two pins of the second coil 420 respectively extend out of the two second openings 220 to be connected with power supply. The first magnetic powder block 100, the second magnetic powder block 200, and the magnetic powder cover plate 300 are combined together by hot pressing.

In manufacturing the combined inductor of the present utility model, the first magnetic powder block 100, the second magnetic powder block 200 and the magnetic powder cover plate 300 are manufactured first, then the first coil 410 and the second coil 420 are respectively placed in the first groove 110 of the first magnetic powder block 100 and the second groove 210 of the second magnetic powder block 200, and finally the first magnetic powder block 100, the second magnetic powder block 200 and the magnetic powder cover plate 300 are hot-pressed and combined together to form the final combined inductor as shown in fig. 2, so that two independent and complete inductors are not required to be manufactured separately, the manufacturing process can be simplified, and the production efficiency can be improved. In the similar products, higher saturation current and more accurate inductance control can be realized under the same size, and the characteristics of ultralow loss, ultrahigh current, ultralow DCR, low leakage inductance and the like are achieved.

In some embodiments, the first coil 410 and the second coil 420 are formed by integrally bending a copper sheet, so that the coil is easy to manufacture, and two pins of the first coil 410 and the second coil 420 are formed at two ends of the copper sheet, so that the manufacturing process can be further simplified.

Further, the first coil 410 and the second coil 420 are both in a U shape, and specifically include a cross arm and two arms respectively disposed at two ends of the cross arm, where the two arms are perpendicular to the cross arm, and the upper ends of the arms are connected to the cross arm, and the lower ends of the arms form pins. Correspondingly, the first recess 110 and the second recess 210 are correspondingly U-shaped. When the first magnetic powder block 100, the second magnetic powder block 200, and the magnetic powder cover plate 300 are stacked together, the first coil 410 and the second coil 420 are difficult to separate from the first groove 110 and the second groove 210, respectively.

Further, the two pins of the first coil 410 are provided with bending parts 430 far away from each other, the two pins of the second coil 420 are also provided with bending parts 430 far away from each other, as shown in fig. 1, the bending parts 430 extend to the outside of the support arm, the bending parts 430 of the first coil 410 are located at the bottom surface of the first magnetic powder block 100, the bending parts 430 of the second coil 420 are located at the bottom surface of the second magnetic powder block 200, and the bending parts 430 can increase the area of the bottom surfaces of the pins, so that the area of the pins exposing the inductance magnetic powder part is larger, and the welding is convenient.

In some embodiments, the bottom surfaces of the first magnetic powder block 100, the second magnetic powder block 200, and the magnetic powder cover plate 300 are provided with the bumps 50 that are butted with each other; the bump 50 on the first magnetic powder block 100 is located between the two pins of the first coil 410, and the bump 50 on the second magnetic powder block 200 is located between the two pins of the second coil 420. The bump 50 is used to fill the gap of the bottom surface of the inductor, so that the bottom surface of the final inductor product is relatively flush with the bottom surface of the pin, thereby facilitating the inductor welding.

The foregoing is a further detailed description of the utility model in connection with specific embodiments, and it is not intended that the utility model be limited to such description. It will be apparent to those skilled in the art that several simple deductions or substitutions can be made without departing from the spirit of the utility model.

Claims

1. A combined inductor, characterized in that: the magnetic powder storage device comprises a first magnetic powder block, a second magnetic powder block and a magnetic powder cover plate which are sequentially arranged along the same direction, wherein the first magnetic powder block, the second magnetic powder block and the magnetic powder cover plate are all made of magnetic powder; the side surface of the first magnetic powder block, which is close to the second magnetic powder block, is provided with a first groove, two first openings are formed in the bottom surface of the first magnetic powder block by the first groove, a first coil is placed in the first groove, and two pins of the first coil extend out of the two first openings respectively; the side surface, close to the magnetic powder cover plate, of the second magnetic powder block is provided with a second groove, two second openings are formed in the bottom surface of the second magnetic powder block by the second groove, a second coil is placed in the second groove, and two pins of the second coil extend out of the two second openings respectively; the first magnetic powder block, the second magnetic powder block and the magnetic powder cover plate are combined together through hot pressing.

2. The combined inductor of claim 1, wherein: the first coil and the second coil are formed by integrally bending copper sheets.

3. The combined inductor of claim 2, wherein: the first coil and the second coil are U-shaped, and the first groove and the second groove are U-shaped correspondingly.

4. A combined inductor according to claim 3, characterized in that: the two pins of the first coil are provided with bending parts far away from each other, and the two pins of the second coil are also provided with bending parts far away from each other; the bending part of the first coil is positioned on the bottom surface of the first magnetic powder block, and the bending part of the second coil is positioned on the bottom surface of the second magnetic powder block.

5. The combined inductor of claim 1, wherein: the bottom surfaces of the first magnetic powder block, the second magnetic powder block and the magnetic powder cover plate are respectively provided with a bump which is in butt joint with each other; the bump on the first magnetic powder block is positioned between two pins of the first coil, and the bump on the second magnetic powder block is positioned between two pins of the second coil.