Integrally-formed inductor

Abstract

The utility model belongs to the technical field of inductors, and particularly relates to an integrally-formed inductor which comprises a model, a U-shaped groove and a lead groove which are communicated with each other are formed in the model, the side face of the lead groove is communicated with a bending groove, and a linear iron core which is axially and horizontally arranged and located in the U-shaped groove is arranged in the model. A coil wound outside the linear iron core is further arranged in the U-shaped groove, leading-out parts facing the same direction are reserved at the two ends of the coil respectively, and the upper ends and the lower ends of the leading-out parts are maximized at the upper end and the lower end of the inner side of the model; according to the utility model, the coil Ac is arranged in the inductor to the maximum extent, the inductance value and the density are improved, so that the performance of the inductance coil is improved, meanwhile, the advantage of the long edge is utilized, the height of the iron core is maximized, the storage of magnetic energy is maximized, and in conclusion, the overall performance of the inductor is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of inductors, and particularly relates to an integrally formed inductor. Background Art

[0002] In the field of electronic technology, magnetic components are the core components for energy conversion and storage, and their performance is related to the efficiency and performance of the entire system;

[0003] After inquiry, the publication (announcement) number: CN111312492A discloses a lead frame, a vertical coupling inductor using the lead frame, and an inductor processing method. In this technology, it is disclosed that "the lead frame, the vertical coupling inductor using the lead frame, and the inductor processing method, the processed vertical coupling inductor is integrally formed, including an inductor magnet and at least one group of inductor conductors buried inside the inductor magnet. Each group of inductor conductors includes two independently arranged coupling wires. The multiple coupling wires are arranged in parallel and the plane where they are located is perpendicular to the upper end surface of the inductor magnet. Both ends of the coupling wires protrude above the upper end surface of the inductor magnet, etc. technical solutions, having the advantages of a streamlined lead frame structure, excellent use effects, the processed coupling inductor being vertical and integrally formed, simple production process, automated production achievable, and the inductor as a whole having many advantages such as high frequency, no noise, large current, high insulation degree, etc.";

[0004] This method is restricted by the external wire structure, unable to optimize the structure design of the coil, unable to meet the requirements of the vertical coil in this regard, and the existing coil of this structure has its center perpendicular to the bottom, which will enhance the influence on the PCB surface of magnetic leakage, so the performance cannot reach the optimum, reducing the efficiency and storage performance of the inductor;

[0005] To solve the above problems, an integrally formed inductor is proposed in this application. Content of the Utility Model

[0006] To solve the above problems existing in the prior art, the utility model provides an integrally formed inductor, which makes full use of the advantage of the long side of the inductor to maximize the height of the iron core inside the inductor and has the characteristic of maximizing storage.

[0007] To achieve the above object, the utility model provides the following technical solution: an integrally formed inductor, including a model, an interconnected U-shaped groove and a lead groove are formed inside the model, and a bending groove is connected to the side of the lead groove. An axially horizontally arranged one-piece iron core is provided inside the model and is located in the U-shaped groove. A coil wound around the outside of the one-piece iron core is also provided in the U-shaped groove. Both ends of the coil are respectively reserved with lead-out parts with the same orientation, and the upper and lower ends of the lead-out parts are maximized at the upper and lower ends inside the model.

[0008] As a preferred technical solution of the present utility model, the lead-out portion forms a first bending portion distributed in parallel through bending with the coil. The front end of the first bending portion forms a second bending portion through bending, and the second bending portion forms a third bending portion parallel to the model through bending.

[0009] As a preferred technical solution of the present utility model, the first bending portion and the second bending portion are perpendicularly distributed and located in the lead wire groove, and the second bending portion bends into the lead wire groove through the bending groove.

[0010] As a preferred technical solution of the present utility model, an opening facilitating the assembly of the U-shaped core, the coil and the model is formed at the top of the U-shaped groove.

[0011] As a preferred technical solution of the present utility model, the model, the U-shaped groove, the lead wire groove and the bending groove are formed by cold pressing. After the model, the U-shaped core and the coil are assembled, powder is filled into the U-shaped groove, the lead wire groove and the bending groove and hot pressed into an integral shape.

[0012] As a preferred technical solution of the present utility model, the coil is connected to the electrode through the third bending portion, and the bottom of the model is formed into a shape matching the size of the electrode by laser.

[0013] As a preferred technical solution of the present utility model, the length of the coil is less than the length of the U-shaped core.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: In the present utility model, the coil Ac is maximally arranged in the inductor, improving the magnitude and density of the inductance, thereby enhancing the performance of the inductor coil. At the same time, taking advantage of the long side, the height of the iron core is maximized to achieve the maximum magnetic energy storage. In summary, the present utility model improves the overall performance of the inductor. Description of the Drawings

[0015] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0016] Figure 1 is a schematic structural diagram of the finished product of the present utility model;

[0017] Figure 2 is Figure 1 a schematic side view structural diagram;

[0018] Figure 3 is a schematic structural diagram of the formed U-shaped groove and lead wire groove in the model;

[0019] Figure 4 is Figure 3 a schematic structural diagram of the formed bending groove in

[0020] Figure 5 Schematic diagram of the structure of the first fold of the coil;

[0021] Figure 6 Schematic diagram of the structure of the second fold of the coil;

[0022] Figure 7 Schematic diagram of the structure of the third fold of the coil;

[0023] Figure 8 is Figure 7 Schematic diagram of the side view;

[0024] In the figure: 1. Model; 11. U-shaped groove; 12. Lead groove; 13. Bending groove; 2. One-word iron core; 3. Coil; 31. Lead-out part; 311. First bending part; 312. Second bending part; 313. Third bending part.<^ Specific embodiments

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] Embodiment

[0027] Please refer to Figures 1-8 , the present invention provides the following technical solutions: An integrally formed inductor includes a model 1, an interconnected U-shaped groove 11 and a lead groove 12 are formed inside the model 1, and a bending groove 13 is communicated with the side of the lead groove 12. An one-word iron core 2 is arranged inside the model 1 with its axis horizontally arranged and located in the U-shaped groove 11. A coil 3 wound around the outside of the one-word iron core 2 is also arranged in the U-shaped groove 11. Both ends of the coil 3 are respectively provided with lead-out parts 31 with the same orientation, and the upper and lower ends of the lead-out parts 31 are maximally at the upper and lower ends inside the model 1.

[0028] Specifically, the lead-out part 31 forms a first bending part 311 distributed in parallel with the coil 3 through bending, the front end of the first bending part 311 forms a second bending part 312 through bending, and the second bending part 312 forms a third bending part 313 parallel to the model 1 through bending. In this embodiment, the structure of the lead-out part 31 is maximally distributed in the model 1, and at the same time, the coil 3 is also maximally distributed in the model 1, thereby improving the inductance performance.

[0029] Specifically, the first bending portion 311 and the second bending portion 312 are vertically distributed and located in the lead groove 12. The second bending portion 312 is bent into the lead groove 12 through the bending groove 13. In this embodiment, the U-shaped groove 11, the lead groove 12, and the bending groove 13 all play an avoidance role, which facilitates the forming and assembly of the lead-out portion 31.

[0030] Specifically, an opening is formed at the top of the U-shaped groove 11 to facilitate the assembly of the straight iron core 2, the coil 3 and the model 1. In this embodiment, a filling portion is provided at the bottom of the U-shaped groove 11 to ensure that the straight iron core 2 and the coil 3 are located at the center of the model 1 after being placed therein, thereby ensuring the fit between the straight iron core 2, the coil 3 and the model 1 and ensuring the quality of the inductor.

[0031] Specifically, the model 1 and the U-shaped groove 11, the lead groove 12, and the bending groove 13 are formed by cold pressing. After the model 1, the straight iron core 2, and the coil 3 are assembled, the U-shaped groove 11, the lead groove 12, and the bending groove 13 are filled with powder and hot pressed into one piece. In this embodiment, the model 1 is not demolded after cold pressing, and the straight iron core 2 and the coil 3 are directly assembled heavier, and then the seams are filled, and finally hot pressed to combine the model 1, the straight iron core 2, and the coil 3 into an integrated unit to form an inductor.

[0032] Specifically, the coil 3 is connected to the electrode through the third bend 313, and the bottom of the model 1 is formed into a shape that matches the size of the electrode by laser. In this embodiment, an embedded molded connection end is used to ensure maximum space utilization while reducing wear at the connection.

[0033] Specifically, the length of the coil 3 is less than that of the flat iron core 2 . In this embodiment, the enameled wire is wound around the outside of the flat iron core 2 to form the coil 3 , and the coil 3 is covered by the model 1 .

[0034] The working principle and use process of this utility model include the following steps:

[0035] 1. Use mixed powder material to press out a straight iron core 2. The straight iron core 2 can be a powder material mixed with two or more of amorphous, nanocrystalline, carbonyl, and alloy iron-nickel. The straight iron core 2 can be round, oval, diamond-shaped, etc. according to the required shape. Then, a coil 3 is wound around the outside of the straight iron core 2. The wound coil 3 cannot exceed the length of the straight iron core 2, or the wound coil 3 is put on the straight iron core 2.

[0036] 2. Press out Model 1 in the mold cavity, and U-shaped groove 11 and lead groove 12 need to be formed on Model 1. At this time, Model 1 is not demolded. At the same time, a bending groove 13 communicating with the lead groove 12 needs to be reserved on the side. Place the one-piece iron core 2 and the coil 3 of the semi-finished product in step 1 in the U-shaped groove 11. At the same time, pass the lead-out part 31 through the lead groove 12, and then bend the second bending part 312 on the lead-out part 31 into the U-shaped groove 11. Bend the front end of the lead-out part 31 again to form a third bending part 313 and locate it at the inner bottom of Model 1. At this time, the first bending part 311 is parallel to the third bending part 313. Fill the mold cavity with powder again and hot press to form a semi-finished product;

[0037] 3. Bake and cure the above semi-finished product, then perform coating spraying and coating. After completion, lead out the third bending part 313 by laser. The laser size is consistent with the electrode connection part. Then perform the electroplating process to obtain the final product.

[0038] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An integrally formed inductor, characterized in that: It includes a model (1), and an interconnected U-shaped groove (11) and a lead groove (12) are formed inside the model (1). A bending groove (13) is communicated with the side of the lead groove (12). An L-shaped iron core (2) with its axis horizontally arranged and located in the U-shaped groove (11) is provided inside the model (1). A coil (3) wound around the L-shaped iron core (2) is also provided in the U-shaped groove (11). Both ends of the coil (3) are respectively reserved with lead-out parts (31) with the same orientation, and the upper and lower ends of the lead-out parts (31) are maximally at the upper and lower ends inside the model (1).

2. The one-piece molded inductor according to claim 1, wherein: The lead-out part (31) forms a first bending part (311) distributed in parallel through bending with the coil (3). The front end of the first bending part (311) forms a second bending part (312) through bending. The second bending part (312) forms a third bending part (313) parallel to the model (1) through bending.

3. The one-piece molded inductor according to claim 2, wherein: The first bending part (311) and the second bending part (312) are perpendicularly distributed and located in the lead groove (12). The second bending part (312) bends into the lead groove (12) through the bending groove (13).

4. The one-piece molded inductor according to claim 1, wherein: An opening facilitating the assembly of the L-shaped iron core (2), the coil (3) and the model (1) is formed at the top of the U-shaped groove (11).

5. The monolithic inductor according to claim 1, wherein: The model (1), the U-shaped groove (11), the lead groove (12) and the bending groove (13) are formed by cold pressing. After the model (1), the L-shaped iron core (2) and the coil (3) are assembled, powder is filled into the U-shaped groove (11), the lead groove (12) and the bending groove (13) and hot pressed into an integral shape.

6. The one-piece molded inductor according to claim 1, wherein: The coil (3) is connected to the electrode through the third bending part (313). The bottom of the model (1) forms a shape matching the size of the electrode by laser.

7. The monolithic inductor according to claim 1, characterized in that: The length of the coil (3) is less than the length of the L-shaped iron core (2).

Images