Chip inductor

Abstract

The utility model discloses a chip inductor in the field of inductors, which comprises a framework and a shell, two chip boards are fixedly arranged at the bottom of the shell, a plurality of U-shaped openings matched with the chip boards are formed in the side face of the framework, the U-shaped openings are divided into first U-shaped openings and second U-shaped openings, one end of each chip board protrudes to form a short fixing part, and the other end of each chip board protrudes to form a second fixing part. The other end of the patch plate protrudes to form a long fixing part, the short fixing part extends to the first U-shaped opening and is connected with the first U-shaped opening, and the long fixing part extends to the outside of the second U-shaped opening and is connected with the second U-shaped opening; according to the chip inductor, welding of the chip inductor is facilitated by adding the two chip boards, the two chip boards are adopted to replace traditional long and thin pins, the welding area of the chip inductor can be increased, and the phenomena of pseudo soldering and false soldering of the chip inductor are not prone to occurring.

Description

Technical Field

[0001] The utility model relates to the field of inductance, in particular to a chip inductor. Background Art

[0002] Chip inductors, also known as power inductors, high current inductors and surface mount high power inductors, are electronic components. They mainly have the characteristics of miniaturization, high quality, high energy storage and low resistance. The structure of chip inductors mainly includes the following parts: Magnetic core: The magnetic core is the core part of the chip inductor, usually made of ferrite, metal alloy or other magnetic materials. Its function is to increase the magnetic permeability of the inductor, thereby increasing the inductance. Winding: The winding is an electromagnetic coil formed by winding a wire on the magnetic core. The structure and number of turns of the winding determine the inductance and quality factor of the inductor. Shell: The shell is the packaging part of the chip inductor, usually made of ceramic, metal, plastic and other materials. The role of the shell is to protect the internal magnetic core and winding, and improve the mechanical strength and heat resistance of the inductor. Pin: Pins (or pins, pin feet) are conductive parts used to connect the chip inductor device to the circuit board. They usually extend from the bottom or side of the chip inductor to be soldered to the pads on the circuit board. In chip inductor devices, the pins are usually made of metal, and the number, shape and size of the pins may vary depending on the specific design and specifications. The main function of the pins is to ensure that the chip inductor can be stably and reliably electrically connected to other electronic components on the circuit board. During the soldering process, the pins are inserted into the corresponding solder holes on the circuit board, and then they are firmly connected to the pads through soldering techniques (such as wave soldering, spot welding, etc.). In this way, the chip inductor can form a complete circuit system with other components on the circuit board through the pins, thereby realizing specific electrical functions.

[0003] Publication (Announcement) No.: CN210378671U, a chip I-shaped inductor, including a top plate, a bottom plate, an inner magnetic core and an outer magnetic core, an outer magnetic core is vertically arranged in the middle of the upper end surface of the bottom plate, and an inner magnetic core is telescopically arranged in the outer magnetic core, and the upper end of the inner magnetic core is fixed to the middle of the lower end surface of the top plate, and a plurality of coils are wound on the outer ring surface of the outer magnetic core. The chip I-shaped inductor has a reasonable structure, and the top plate, the bottom plate, the inner magnetic core and the outer magnetic core together form an I-shaped inductor core structure, and the coil is wound on the outer ring surface of the outer magnetic core as an inductor coil, and the inner magnetic core can be telescopically arranged up and down in the outer magnetic core, and the protective cover can cover the outside of the outer magnetic core, and the outer ring surface of the protective cover is provided with heat dissipation holes on both sides, while protecting the coil, the inner magnetic core and the outer magnetic core, it is convenient to dissipate heat through the heat dissipation holes, so that the operation is safe and stable, and the overall structure of the device is simple, easy to install, and easy to use.

[0004] The inductor of the above structure also has the following defects: pins are provided at both ends of the left and right ends of the coil, and the pins on both sides extend into the through holes on the left and right sides respectively, and a group of connecting ends are electrically coupled under the left and right ends of the coil, and each group of connecting ends is vertically arranged under the through holes, the pins and connecting ends are long and thin, and during welding, the solder joints formed by the connecting ends are small, and the welding area is small, which is prone to cold soldering and false soldering, resulting in unstable welding, reducing the firmness and reliability of the inductor, and the structural strength is low. Since the pins and connecting ends are long and thin, when the inductor is subjected to external pressure, collision, etc., it is easy to cause the pins and connecting ends to deform or even be damaged. The structural strength of the pins and connecting ends is low. When the pins and connecting ends are damaged, the inductor is difficult to use. Utility Model Content

[0005] In order to overcome the deficiencies of the existing technical solutions, the utility model provides a chip inductor, which can effectively solve the technical problems of low pin structure strength of the existing chip inductor and small soldering area of ​​the pin, which easily lead to cold soldering and false soldering in the chip inductor.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a chip inductor, including a skeleton and a shell, two patch boards are fixedly arranged on the bottom of the shell, and the side of the skeleton is provided with a plurality of U-shaped openings that are mutually adapted to the patch boards, and the U-shaped openings are divided into a first U-shaped opening and a second U-shaped opening, one end of the patch board protrudes to form a short fixed portion, and the other end of the patch board protrudes to form a long fixed portion, the short fixed portion extends to the first U-shaped opening and is connected to the first U-shaped opening, and the long fixed portion extends to the outside of the second U-shaped opening and is connected to the second U-shaped opening.

[0007] Furthermore, a circular magnetic core is fixedly disposed inside the shell, and an inductor coil is wound around the outer surface of the circular magnetic core.

[0008] Furthermore, a positive electrode is provided at one end of the inductor coil, and a negative electrode is provided at the other end of the inductor coil. The positive electrode and the negative electrode extend to the bottom of the patch board respectively, and the positive electrode and the negative electrode are welded to the patch board respectively.

[0009] Furthermore, an annular groove is formed between the frame and the shell.

[0010] Furthermore, a plurality of heat dissipation holes are arranged on the side of the shell, and the plurality of heat dissipation holes are arranged and distributed at equal distances.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model provides a chip inductor, which facilitates the welding of the chip inductor by adding two chip boards, and adopts two chip boards to replace traditional long and thin pins, so as to increase the welding area of ​​the chip inductor, making it less likely for the chip inductor to have cold welding and false welding, thereby greatly improving the firmness and reliability of welding, and multiple U-shaped openings on the side of the frame that are compatible with the chip boards enable the chip boards to be firmly fixed on the frame, further enhancing the structural strength of the chip boards. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is one of the three-dimensional diagrams of a chip inductor of the utility model;

[0013] Figure 2 This is the second three-dimensional diagram of a chip inductor of the utility model;

[0014] Figure 3 This is a schematic diagram of the internal structure of a chip inductor of the utility model;

[0015] Figure 4 The utility model is a cross-sectional view of a shell of a chip inductor.

[0016] Numbers in the figure:

[0017] 1-skeleton; 2-shell; 3-circular groove; 4-first U-shaped opening; 5-second U-shaped opening; 6-short fixing part; 7-long fixing part; 8-chip board; 9-inductor coil; 10-positive electrode; 11-negative electrode; 12-circular magnetic core; 13-heat dissipation hole. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] like Figure 1-Figure 4As shown, a chip inductor comprises a skeleton 1 and a shell 2, two patch boards 8 are fixedly arranged at the bottom of the shell 2, a plurality of U-shaped openings are opened on the side of the skeleton 1 to match the patch boards 8, the U-shaped openings are divided into a first U-shaped opening 4 and a second U-shaped opening 5, one end of the patch board 8 protrudes to form a short fixing portion 6, the other end of the patch board 8 protrudes to form a long fixing portion 7, the short fixing portion 6 extends to the first U-shaped opening 4 and is connected to the first U-shaped opening 4, the long fixing portion 7 extends to the outside of the second U-shaped opening 5 and is connected to the second U-shaped opening 5. The skeleton 1 is connected with the chip board 8 through the opening 5, and the multiple U-shaped openings on the side of the skeleton 1 that are compatible with the patch board 8 enable the patch board 8 to be firmly fixed on the skeleton 1, further enhancing the structural strength of the entire chip inductor. By adding two patch boards 8 as welding points, the welding area of ​​the chip inductor is significantly increased compared to the traditional long and thin pins. The design of the two patch boards 8 not only increases the welding area, but also makes the welding process simpler and more efficient. The welders can more easily place and weld the chip inductor accurately on the circuit board, thereby improving the production efficiency.

[0020] A circular magnetic core 12 is fixedly arranged inside the shell 2, and an inductor 9 is wound on the outer surface of the circular magnetic core 12. A positive electrode 10 is arranged at one end of the inductor 9, and a negative electrode 11 is arranged at the other end of the inductor 9. The positive electrode 10 and the negative electrode 11 extend to the bottom of the patch board 8 respectively, and the positive electrode 10 and the negative electrode 11 are respectively welded to the patch board 8. An annular groove 3 is formed between the skeleton 1 and the shell 2, and a plurality of heat dissipation holes 13 are arranged on the side of the shell 2. The plurality of heat dissipation holes 13 are evenly arranged and distributed. By arranging a plurality of heat dissipation holes 13 evenly arranged and distributed on the side of the shell 2, the heat dissipation performance of the patch inductor is effectively improved. These heat dissipation holes 13 help to dissipate the heat generated by the inductor 9 during operation in a timely manner. When dissipating heat, the heat is discharged from the heat dissipation holes 13 to the annular groove 3, and the heat is discharged into the air through the annular groove 3.

[0021] A chip inductor of the present embodiment facilitates the welding of the chip inductor by adding two chip boards 8. The two chip boards 8 are used to replace the traditional long and thin pins, which can increase the welding area of ​​the chip inductor, making it less likely for the chip inductor to have cold soldering or false soldering, thereby greatly improving the firmness and reliability of welding. The multiple U-shaped openings on the side of the skeleton 1 that are compatible with the chip boards 8 enable the chip boards 8 to be firmly fixed on the skeleton 1, further enhancing the structural strength of the chip boards 8.

[0022] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A chip inductor, comprising a frame and a shell, characterized in that: Two patch boards are fixedly arranged at the bottom of the shell, and a plurality of U-shaped openings that are compatible with the patch boards are opened on the side of the skeleton, and the U-shaped opening is divided into a first U-shaped opening and a second U-shaped opening. One end of the patch board protrudes to form a short fixed portion, and the other end of the patch board protrudes to form a long fixed portion. The short fixed portion extends to the first U-shaped opening and is connected to the first U-shaped opening, and the long fixed portion extends to the outside of the second U-shaped opening and is connected to the second U-shaped opening.

2. A chip inductor according to claim 1, characterized in that: A circular magnetic core is fixedly arranged inside the shell, and an inductor coil is wound around the outer surface of the circular magnetic core.

3. A chip inductor according to claim 2, characterized in that: A positive electrode is arranged at one end of the inductor coil, and a negative electrode is arranged at the other end of the inductor coil. The positive electrode and the negative electrode extend to the bottom of the patch board respectively, and the positive electrode and the negative electrode are welded to the patch board respectively.

4. The chip inductor according to claim 1, characterized in that: A circular groove is formed between the frame and the shell.

5. A chip inductor according to any one of claims 1 to 4, characterized in that: A plurality of heat dissipation holes are arranged on the side of the shell, and the plurality of heat dissipation holes are evenly spaced and distributed.

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