Multi-coil combined type forming inductor

Abstract

The utility model relates to a multi-coil combined type forming inductor which comprises a magnetic powder base block, a plurality of first containing grooves and second containing grooves are formed in the magnetic powder base block, coils of inductance coils are placed in the first containing grooves, extending sections of the inductance coils are placed in the second containing grooves, and pins of the inductance coils are located above the surface of the magnetic powder base block. The coil, the extending section and the pin are integrally formed, and a magnetic powder insert is placed in the coil. The beneficial effects of the utility model are that a plurality of inductance coils can be effectively integrated together so as to realize more compact volume and better electromagnetic performance.

Description

Technical Field

[0001] The utility model relates to the technical field of inductors, and particularly relates to a multi-coil combined molded inductor. Background Art

[0002] With the rapid development of electronic technology, especially the continuous progress in the fields of mobile devices, smartphones, automotive electronics, etc., the performance requirements for inductors are increasing day by day. These fields not only require inductors to have a smaller volume, lower DC resistance and smaller losses, but also require them to be able to withstand large currents, have high reliability, and operate stably in complex environments.

[0003] In the prior art, most inductors use a single wire wound around a magnetic core as a coil. In this way, the coil is usually exposed outside and is easily damaged, and the overall volume of the inductor is relatively large.

[0004] For example, the "copper core coil inductor" disclosed in the Chinese patent literature, with the publication number CN219677019U and the application date of April 21, 2023, this utility model copper core coil inductor includes a magnetic core, a coil is wound around the magnetic core, a fixing mechanism for fixing the coil is arranged inside the magnetic core, and a mounting mechanism is arranged at one end of the magnetic core. The fixing mechanism includes a round rod arranged inside the magnetic core. It can clamp the coil by moving the clamping plate, which is convenient for installing the coil, but there are problems that the coil is usually exposed outside and is easily damaged, and the overall volume of the inductor is relatively large. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, this application proposes a multi-coil combined molded inductor, which can effectively integrate multiple inductor coils together to achieve a more compact volume and better electromagnetic performance.

[0006] The following is the technical solution of the utility model. A multi-coil combined molded inductor includes: a magnetic powder base block, several first accommodation grooves and second accommodation grooves are opened in the magnetic powder base block, the first accommodation grooves are for placing the coils of the inductor coils, the second accommodation grooves are for placing the extension sections of the inductor coils, the pins of the inductor coils are located above the surface of the magnetic powder base block, the coils, the extension sections and the pins are integrally formed, and magnetic powder inserts are placed inside the coils.

[0007] As a preferred solution of the utility model, four first accommodation grooves and second accommodation grooves are evenly opened in the magnetic powder base block, and the first accommodation grooves are located below the second accommodation grooves.

[0008] As a preferred solution of the utility model, the first accommodation grooves and the second accommodation grooves have the same length, the depth of the first accommodation grooves is greater than or equal to the depth of the second accommodation grooves, and the width of the first accommodation grooves is less than the width of the second accommodation grooves.

[0009] As a preferred solution of the present utility model, the length of the extension section is greater than the width of the first receiving groove and less than the width of the second receiving groove, and the height of the extension section is less than or equal to the depth of the second receiving groove.

[0010] As a preferred solution of the present utility model, a metal coating is provided outside the pin, and the metal coating is a copper coating, a tin coating or a nickel coating.

[0011] As a preferred solution of the present utility model, the coil is a flat wire or a round wire.

[0012] As a preferred solution of the present utility model, the magnetic powder inlay block is arranged flush with the surface of the magnetic powder base block.

[0013] The beneficial effects of the present utility model are as follows: By uniformly partitioning the magnetic powder base block and arranging an inductance coil in each partition, multiple inductance coils can be effectively integrated together to achieve a more compact volume and better electromagnetic performance. Description of the Drawings

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is an exploded view of the present utility model;

[0016] Figure 3 is a schematic diagram of the structure of the magnetic powder base block of the present utility model;

[0017] Figure 4 is a schematic diagram of the structure of the inductance coil of the present utility model;

[0018] Figure 5 is a schematic diagram of the structure of the magnetic powder inlay block of the present utility model;

[0019] In the figure: 1, magnetic powder base block; 2, inductance coil; 3, magnetic powder inlay block; 101, first receiving groove; 102, second receiving groove; 201, coil; 202, extension section; 203, pin. Detailed Embodiments

[0020] To make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present utility model clearer, the technical solutions of the embodiments of the present utility model will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present utility model.

[0021] Embodiment

[0022] As Figures 1 to 5As shown in the figure, a multi-coil combined molded inductor includes: a magnetic powder base block, in which a plurality of first receiving grooves and second receiving grooves are formed. The first receiving grooves are for placing the coils of the inductor coil, and the second receiving grooves are for placing the extension segments of the inductor coil. The pins of the inductor coil are located above the surface of the magnetic powder base block. The coil, the extension segment, and the pins are integrally formed, and a magnetic powder insert is placed inside the coil.

[0023] In this embodiment, the magnetic powder base block is generally rectangular in shape. Four first receiving grooves and second receiving grooves are evenly formed in the magnetic powder base block. The first receiving grooves are located below the second receiving grooves. The lengths of the first receiving grooves and the second receiving grooves are equal. The depth of the first receiving groove is greater than or equal to the depth of the second receiving groove. The width of the first receiving groove is smaller than the width of the second receiving groove. The opening area of the first receiving groove is smaller than the opening area of the second receiving groove, which is convenient for placing the coil in the first receiving groove and at the same time placing the extension segment in the second receiving groove to achieve a more compact volume.

[0024] In this embodiment, the inductor coil is generally designed in a U shape. The inductor coil is integrally formed with a coil, an extension segment, and pins from bottom to top. Among them, the coil is the U-shaped part, and the pins are trapezoidal bodies. The length of the extension segment is greater than the width of the first receiving groove and smaller than the width of the second receiving groove. When the coil is placed in the first receiving groove, the extension segment is placed on the second receiving groove. The height of the extension segment is smaller than or equal to the depth of the second receiving groove, which can make the pins exposed outside the magnetic powder base block, facilitating the use of the pins. By evenly partitioning the magnetic powder base block and setting an inductor coil in each partition, multiple inductor coils can be effectively integrated together. When current passes through the coil, a magnetic field will be generated inside the inductor, and then magnetic energy will be stored and released to achieve a more compact volume and better electromagnetic performance.

[0025] In this embodiment, the magnetic powder insert fits with the inductor coil. The magnetic powder insert is flush with the surface of the magnetic powder base block. In a possible embodiment, the magnetic powder insert inside the inductor coil is exposed on the surface of the magnetic powder base block, and mechanical thermal pressing and spraying are performed on the exposed part of the magnetic powder insert under high temperature and high pressure conditions.

[0026] In this embodiment, a metal coating is provided outside the pins. The metal coating can be a copper coating, a tin coating, or a nickel coating. After stripping the paint of the pins of the inductor coil, electroplating is performed to form the metal coating.

[0027] In this embodiment, the coil is a flat wire or a round wire. The coil can be a bare copper wire, which can reduce costs without the risk of short circuit.

[0028] Embodiment: Four first receiving grooves and second receiving grooves are evenly formed in the magnetic powder base block. The first receiving grooves are located below the second receiving grooves, and the opening area of the first receiving grooves is smaller than that of the second receiving grooves. Place the U-shaped inductance coil into the magnetic powder base block so that the coil is placed in the first receiving grooves, the extending sections are placed on the second receiving grooves, and the pins are exposed outside the magnetic powder base block. At this time, place the magnetic powder insert into the coil, and perform mechanical press forming on the exposed part of the magnetic powder insert so that the surface of the magnetic powder insert is flush with the surface of the magnetic powder base block.

[0029] By evenly partitioning the magnetic powder base block and arranging an inductance coil in each partition, the present utility model can effectively integrate multiple inductance coils together to achieve a more compact volume and better electromagnetic performance.

[0030] Although the preferred embodiments of the present utility model have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the present utility model.

[0031] Obviously, those skilled in the art can make various changes and modifications to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model also intends to include these changes and modifications.

Claims

1. A multi-coil combined molded inductor, characterized in that, Including: A magnetic powder base block, in which a number of first accommodating grooves and second accommodating grooves are provided. The first accommodating grooves are for placing the coils of an inductance coil, and the second accommodating grooves are for placing the extension segments of the inductance coil. The pins of the inductance coil are located above the surface of the magnetic powder base block. The coils, extension segments and pins are integrally formed, and magnetic powder inserts are placed inside the coils.

2. The multi-coil combined molded inductor according to claim 1, wherein Four first accommodating grooves and second accommodating grooves are evenly provided in the magnetic powder base block, and the first accommodating grooves are located below the second accommodating grooves.

3. A multi-coil combined molded inductor according to claim 1 or 2, characterized in that, The first accommodating grooves and the second accommodating grooves have the same length. The depth of the first accommodating grooves is greater than or equal to the depth of the second accommodating grooves, and the width of the first accommodating grooves is less than the width of the second accommodating grooves.

4. The multi-coil combined molded inductor according to claim 1, wherein The length of the extension segment is greater than the width of the first accommodating groove and less than the width of the second accommodating groove, and the height of the extension segment is less than or equal to the depth of the second accommodating groove.

5. The multi-coil combined molded inductor according to claim 1, characterized in that, A metal coating is provided outside the pins, and the metal coating is a copper coating, a tin coating or a nickel coating.

6. The multi-coil combined molded inductor according to claim 1, characterized in that, The coils are flat wires or round wires.

7. The multi-coil combined molded inductor according to claim 1, wherein The magnetic powder inserts are flush with the surface of the magnetic powder base block.

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