Inductor

Abstract

The utility model provides an inductor which comprises a conductor and a magnet shell. The conductor is provided with a first pin and a second pin which are electrically connected; the magnet shell comprises a first magnet and a second magnet, one side of the first magnet is provided with a convex column and a containing groove surrounding the periphery of the convex column, the conductor is contained in the containing groove, and the first pin and the second pin are exposed out of the containing groove; the second magnet is in contact fit with the first magnet and covers the accommodating groove, and the conductor is located between the first magnet and the second magnet. The inductor is simple in structure, a multi-electrode and multi-combination application form can be formed through the cooperation of a plurality of conductors and the magnet shell, the cost is reduced, and the space is saved.

Description

Technical Field

[0001] This utility model relates to an inductor and belongs to the field of inductor technology. Background Technology

[0002] With the development of AI technology, there is an increasing market demand for inductors with low voltage, high current, and low DC resistance. However, for molded inductors, electrodes are mostly fabricated using traditional wire winding methods, resulting in thick wire diameters, difficult winding and bending, and complex inductor structures. Furthermore, multi-electrode inductors occupy significant chip space, increasing costs. Moreover, the inductor cannot be molded in a single unit for multiple electrodes and combinations, limiting the flexibility of inductor fabrication.

[0003] In view of this, it is indeed necessary to improve the existing inductors to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide an inductor with a simple structure that can be combined with multiple conductors and a magnetic shell to form multiple electrodes and multiple application forms, thereby reducing costs and saving space.

[0005] To achieve the above objectives, this utility model provides an inductor, comprising:

[0006] A conductor having a first pin and a second pin that are electrically connected;

[0007] The magnet housing includes a first magnet and a second magnet. One side of the first magnet is provided with a protrusion and a receiving groove surrounding the outer periphery of the protrusion. The conductor is received in the receiving groove, and the first pin and the second pin are exposed in the receiving groove. The second magnet contacts and cooperates with the first magnet and covers the receiving groove. The conductor is located between the first magnet and the second magnet.

[0008] Optionally, the conductor further includes a main body portion connecting the first pin and the second pin. The main body portion is n-shaped, with the first pin and the second pin located at opposite ends of the main body portion and extending away from each other. The main body portion is accommodated within the receiving groove.

[0009] Optionally, the first magnet is a rectangular columnar structure, the second magnet is a plate-like structure, and the main body is in close contact with the first magnet and / or the second magnet.

[0010] Optionally, the first magnet has a bottom surface and a top surface disposed opposite to each other, and a first side surface connecting the bottom surface and the top surface. The receiving groove is recessed from the top surface toward the bottom surface and extends through the first side surface. The first pin and the second pin are both exposed on the first side surface.

[0011] Optionally, one first magnet is provided, the conductor is located in the receiving groove, and the second magnet is in contact with the top surface of the first magnet.

[0012] Optionally, the second magnet has the same structure as the first magnet, and the top surfaces of the first magnet and the second magnet are in contact with each other, the two protrusions abut against each other, and the two receiving grooves are interconnected to jointly accommodate the conductor.

[0013] Optionally, multiple first magnets are stacked together, with the bottom surface of one first magnet contacting the top surface of an adjacent first magnet, and each first magnet having a receiving groove containing the conductor, and the second magnet contacting the top surface of the first magnet located at the top.

[0014] Optionally, an insulating layer may also be included, which covers the outer surface of the magnet housing.

[0015] Optionally, the magnet housing has a groove located between the first pin and the second pin, and an insulating layer is provided inside the groove.

[0016] Optionally, it may also include an electroplating layer, which is electroplated on the surfaces of the first and second pins exposed on the magnet housing.

[0017] The beneficial effects of this invention are as follows: The inductor of this invention accommodates a conductor within a receiving groove by providing a protruding post on one side of a first magnet and a receiving groove surrounding the protruding post, with the first and second leads of the conductor exposed outside the receiving groove; and the conductor is positioned between the first and second magnets by using a second magnet. The inductor of this invention has a simple structure and can be configured into multiple electrodes and multiple combinations through the cooperation of multiple conductors and magnet housings, reducing costs and saving space. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the first embodiment of the inductor of this utility model.

[0019] Figure 2 This is an assembly diagram of the conductor, the first magnet, and the second magnet in the first embodiment of the inductor of this utility model.

[0020] Figure 3 yes Figure 2 A schematic diagram of the three-dimensional structure of the intermediate conductor.

[0021] Figure 4 yes Figure 2 A three-dimensional structural diagram of the first magnet.

[0022] Figure 5 yes Figure 2 A schematic diagram of the three-dimensional structure of the second magnet.

[0023] Figure 6 This is an assembly diagram of the conductor, the first magnet, and the second magnet in the second embodiment of the inductor of this utility model.

[0024] Figure 7 This is a three-dimensional structural diagram of the third embodiment of the inductor of this utility model.

[0025] Figure 8 This is an assembly diagram of the conductor, the first magnet, and the second magnet in the third embodiment of the inductor of this utility model.

[0026] Figure 9 This is a schematic diagram of another three-dimensional structure in the third embodiment of the inductor of this utility model.

[0027] Figure 10 yes Figure 1 Schematic diagram of the middle insulation layer.

[0028] Figure 11 yes Figure 1 A schematic diagram of the insulating layer and the electroplated layer.

[0029] Figure 12 yes Figure 7 A schematic diagram of the insulating layer and the electroplated layer.

[0030] Figure 13 This is a flowchart of the method for preparing the inductor of this utility model. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Please see Figures 1-12 As shown, this utility model provides an inductor 100. The inductor 100 includes a conductor 10 and a magnetic housing 20. The conductor 10 has a first pin 11 and a second pin 12 that are electrically connected. The magnetic housing 20 includes a first magnet 21 and a second magnet 22. One side of the first magnet 21 has a protrusion 211 and a receiving groove 212 surrounding the outer periphery of the protrusion 211. The conductor 10 is accommodated in the receiving groove 212, and the first pin 11 and the second pin 12 are exposed in the receiving groove 212. The second magnet 22 contacts and engages with the first magnet 21 and covers the receiving groove 212, and the conductor 10 is located between the first magnet 21 and the second magnet 22.

[0033] Preferably, the conductor 10 further includes a main body 13 connecting the first pin 11 and the second pin 12. The main body 13 is n-shaped, with the first pin 11 and the second pin 12 located at opposite ends of the main body 13 and extending away from each other. The main body 13 is accommodated within the receiving groove 212. Figure 3 As shown, an arc-shaped transition surface 14 is formed at the bend of the conductor 10, with a bend radius of approximately 0.5-0.8 mm. During the hot-pressing process, the first magnet 21 and the second magnet 22 are compressed, and the distance between the conductor 10 and the first magnet 21 and the second magnet 22 continuously decreases until they are in complete contact. That is, the main body 13 is in close contact with the first magnet 21 and / or the second magnet 22, ensuring the relative fixation of the conductor 10 and the magnet housing 20. The arc-shaped transition surface 14 further prevents gaps between the bend of the conductor 10 and the magnet housing 20.

[0034] In this embodiment, the first magnet 21 has a bottom surface (not shown) and a top surface 23 disposed opposite to each other, and a first side surface 24 connecting the bottom surface and the top surface 23, as shown below. Figure 1 As shown. The receiving groove 212 is n-shaped, recessed from the top surface 23 towards the bottom surface, and extends through the first side surface 24. The first magnet 21 is E-shaped. Both the first pin 11 and the second pin 12 are exposed on the first side surface 24. That is, the first pin 11 and the second pin 12 are exposed on the same side of the magnet housing 20. The inductor 100 of this invention has a simple structure. By cooperating with the conductor 10 and the magnet housing 20, it can form multiple electrodes and multiple combinations for application, saving space.

[0035] In the first embodiment of this utility model, the first magnet 21 is a rectangular columnar structure, and the second magnet 22 is a plate-like structure. That is, the first magnet 21 has an E-shaped structure, and the second magnet 22 has an I-shaped structure. Figures 2-5 As shown, a first magnet 21 is provided, the conductor 10 is located within the receiving groove 212, and the second magnet 22 is in contact with the top surface 23 of the first magnet 21. The second magnet 22 abuts against the protrusion 211 and covers the receiving groove 212. In the first embodiment, the magnet housing 20 is composed of two structurally different first magnets 21 and second magnets 22, and has a set of electrodes corresponding to the inductor 100.

[0036] In the second embodiment of this utility model, the second magnet 22 has the same structure as the first magnet 21, such as... Figure 6As shown, the second magnet 22 and the first magnet 21 are both E-shaped and mirror-symmetrically arranged. The top surface 23 of the first magnet 21 and the top surface 23 of the second magnet 22 are in contact with each other, the two protrusions 211 abut against each other, the two receiving grooves 212 are interconnected, and the conductor 10 is housed within the receiving space enclosed by the two receiving grooves 212. In the second embodiment, the magnet housing 20 is composed of two identical first magnets 21 and second magnets 22, or in other words, the magnet housing 20 is composed of two first magnets 21, corresponding to a set of electrodes in the inductor 100.

[0037] In the third embodiment of this utility model, the structure of the first magnet 21' and the second magnet 22' is the same as that in the first embodiment. The difference is that multiple first magnets 21' are stacked together, such as... Figure 7 and Figure 8 As shown, the bottom surface of one of the first magnets 21' contacts and engages with the top surface 23 of the adjacent first magnet 21', meaning that multiple first magnets 21' are arranged in a translational and stacked manner, and these multiple first magnets 21' contact and engage with each other. Each first magnet 21' has a receiving groove 212 containing the conductor 10, and the second magnet 22' contacts and engages with the top surface 23 of the topmost first magnet 21'. In the third embodiment, the magnet housing 20 is composed of multiple first magnets 21' and a second magnet 22' with a structure different from the first magnets 21', and the inductor 100' has multiple sets of electrodes. Of course, in other optional embodiments, the second magnet 22 can also be arranged in an E-shape, but the depth of the receiving groove 212 of the second magnet 22 and the topmost first magnet 21 is shallower, so as to jointly enclose the receiving space as in the second embodiment. In the third embodiment, by combining multiple conductors 10 and first magnets 21', a multi-electrode, multi-combination application is formed, which can save space and reduce costs. Preferably, the first magnets 21 can be stacked in various ways, including but not limited to stacking in a straight line or stacking side by side. For example... Figure 9 As shown, the inductor 100” is formed by stacking inductors 100' side by side in the third embodiment.

[0038] like Figures 10-12As shown, the inductor 100 further includes an insulating layer 30. The insulating layer 30 covers the outer surface of the magnet housing 20. That is, the insulating layer 30 does not contact the first pin 11 and the second pin 12. In this embodiment, the first side 24 of the magnet housing 20 is provided with a groove. The groove is located between the first pin 11 and the second pin 12, and the insulating layer 30 is provided in the groove. When the inductor 100 has multiple sets of electrodes, an insulating layer 30 is provided between the first pin 11 and the second pin 12 of two adjacent conductors 10. The inductor 100 also includes an electroplated layer 40, which is electroplated on the first pin 11 and the second pin 12 exposed on the surface of the magnet housing 20. Preferably, on the first side 24, the magnet housing on the sides of the first pin 11 and the second pin 12 is exposed, and the electroplated layer 40 extends to the exposed magnet housing 20, increasing the solderability, solderability, and adhesion of the electrodes.

[0039] Please see Figure 13 As shown, a method for fabricating the inductor 100 described above is also disclosed, comprising:

[0040] S1. Fabrication of conductor 10. The conductor is fabricated using either copper sheet stamping or copper sheet cutting. The conductor 10 has a first pin 11 and a second pin 12 for electrical connection. In this embodiment, the first pin 11 and the second pin 12 are the electrodes of the inductor 100. The conductor 10 also includes a main body 13 connecting the first pin 11 and the second pin 12. The main body 13 is n-shaped, with the first pin 11 and the second pin 12 located at opposite ends of the main body 13 and extending away from each other. The bends of the conductor 10 are ground to form arc-shaped transition surfaces 14, with a bend radius of approximately 0.5-0.8 mm. In this embodiment, the copper sheet mainly includes oxygen-free copper, high-purity copper, single-crystal copper, high-strength and high-conductivity copper alloys, copper-based composite materials, etc.

[0041] S2, fabrication of the first magnet 21. The first magnet 21 has a protrusion 211 on one side and a receiving groove 212 surrounding the protrusion 211. A micro-nano composite soft magnetic material is filled into the first magnet mold, and the first magnet 21 is obtained by cold pressing. This micro-nano composite soft magnetic material has multiple characteristics such as low loss, high permeability, high saturation, and high temperature resistance. The specific parameters for this cold pressing are: at room temperature, the unit pressure is controlled at 5t-6t, preferably 5.5t. The pressing time is approximately 2 seconds. The first magnet 21 is E-shaped.

[0042] S3, the first magnet 21 is placed in a hot press mold, and then the conductor 10 is placed in the hot press mold and assembled with the first magnet 21 to obtain an assembly. In this embodiment, the first magnet 21 and the conductor 10 can be precisely placed into the hot press mold by a first magnet filling machine and a conductor filling machine combined with a vision mechanism, and the main body 13 of the conductor 10 is located in the receiving groove 212 of the first magnet 21, with the first pin 11 and the second pin 12 exposed in the receiving groove 212.

[0043] S4, Prepare the second magnet 22. Fill the second magnet mold with micro-nano composite soft magnetic material and cold press to obtain the second magnet 22. The parameters for this cold pressing are the same as those for preparing the first magnet 21. The second magnet 22 is precisely placed in the hot pressing mold using a second magnet filling machine and a vision mechanism, and then hot-pressed together with the assembly. The parameters for this hot pressing are: temperature controlled at 190℃, unit pressure controlled at 5t-6t, and pressing time approximately 100 seconds. During the hot pressing process, the first magnet 21 and the second magnet 22 are compressed, and the distance between the conductor 10 and the first magnet 21 and the second magnet 22 continuously decreases until they are in complete contact.

[0044] S5, Remove the hot-pressing mold to obtain the initial inductor. Both the first pin 11 and the second pin 12 are exposed on the initial inductor. The first magnet 21 and the second magnet 22 form a magnet housing 20, with both the first pin 11 and the second pin 12 exposed on the surface of the magnet housing 20.

[0045] S6, perform roll-blowing treatment on all surfaces of the initial inductor to prepare an insulating layer 30. The coating material selected for the roll-blowing treatment is a novel nano-coating material or a water-based SUP nano-coating material, which has advantages such as non-clogging, corrosion resistance, high temperature resistance, high insulation, good wear resistance, and environmental friendliness.

[0046] S7, the insulating layer 30 at the first pin 11 and the second pin 12 is stripped to expose the first pin 11 and the second pin 12.

[0047] S8, electroplating is performed at the first pin 11 and the second pin 12, i.e., Cu, Ni and Sn are electroplated sequentially to prepare an electroplated layer 40, thus obtaining the inductor 100. The electroplated layer 40 can increase the solderability, solder resistance and adhesion of the electrodes.

[0048] Optionally, in step S3, the assembly is formed by assembling one first magnet 21 and one conductor 10, or the assembly is formed by assembling multiple first magnets 21 and multiple conductors 10 at intervals. That is, when the assembly is formed by assembling one first magnet 21 and one conductor 10, the inductor 100 formed by hot-pressing the second magnet 22 with the assembly is an inductor with one set of electrodes. When the assembly is formed by assembling multiple first magnets 21 and multiple conductors 10 at intervals, the inductor 100 formed by hot-pressing the second magnet 22 with the assembly is an inductor 100 with multiple sets of electrodes. The inductor 100 can also be tested and packaged. The product's dimensions, insulation resistance, and Rdc are tested to reject defective products due to size and performance issues, and good products are packaged.

[0049] In summary, the inductor 100 of this invention accommodates the conductor 10 within the receiving groove 212 by providing a protrusion 211 on one side of the first magnet 21 and a receiving groove 212 surrounding the protrusion 211, with the first lead 11 and the second lead 12 of the conductor 10 exposed outside the receiving groove 212; and by using a second magnet 22, the conductor 10 is positioned between the first magnet 21 and the second magnet 22. The inductor 100 of this invention has a simple structure and can form multiple electrode configurations and multiple combinations through the cooperation of multiple conductors 10 and the magnet housing 20, reducing costs and saving space.

[0050] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model.

Claims

1. An inductor, characterized in that, include: A conductor having a first pin and a second pin that are electrically connected; The magnet housing includes a first magnet and a second magnet. One side of the first magnet is provided with a protrusion and a receiving groove surrounding the outer periphery of the protrusion. The conductor is received in the receiving groove, and the first pin and the second pin are exposed in the receiving groove. The second magnet contacts and cooperates with the first magnet and covers the receiving groove. The conductor is located between the first magnet and the second magnet. Multiple first magnets are stacked, with the bottom surface of one first magnet contacting and cooperating with the top surface of the adjacent first magnet. The conductor is provided in the receiving groove of each first magnet. The second magnet contacts and cooperates with the top surface of the first magnet located at the top.

2. The inductor according to claim 1, characterized in that: The conductor further includes a main body portion connecting the first pin and the second pin. The main body portion is n-shaped, with the first pin and the second pin located at opposite ends of the main body portion and extending away from each other. The main body portion is accommodated within the receiving groove.

3. The inductor according to claim 2, characterized in that: The first magnet is a rectangular columnar structure, the second magnet is a plate-like structure, and the main body is in close contact with the first magnet and / or the second magnet.

4. The inductor according to claim 2, characterized in that: The first magnet has a bottom surface and a top surface that are disposed opposite to each other, and a first side surface that connects the bottom surface and the top surface. The receiving groove is recessed from the top surface toward the bottom surface and extends through the first side surface. The first pin and the second pin are both exposed on the first side surface.

5. The inductor according to claim 4, characterized in that: The second magnet has the same structure as the first magnet, and the top surfaces of the first magnet and the second magnet are in contact with each other. The two protrusions abut against each other, and the two receiving grooves are interconnected to jointly accommodate the conductor.

6. The inductor according to claim 1, characterized in that: It also includes an insulating layer that covers the outer surface of the magnet housing.

7. The inductor according to claim 6, characterized in that: The magnet housing has a groove located between the first pin and the second pin, and an insulating layer is provided inside the groove.

8. The inductor according to claim 1, characterized in that: It also includes an electroplating layer, which is electroplated on the surface of the first pin and the second pin exposed on the magnet housing.

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