Inductor and electronic equipment

Abstract

The utility model provides an inductor and electronic equipment. The inductor comprises a magnetic core and an inductance coil. The inductance coil comprises the coil part and the welding foot parts which are arranged in pairs, and the coil part and the welding foot parts are of an integrated structure so as to ensure that the whole inductance coil is free of any additional welding spot connection, so that the structural stability and the electrical reliability of the inductor are remarkably improved. The coil part is a main place for generating an inductive effect, is wound on the outer side of the magnetic core along the spiral line direction, and extends along the axis direction of the magnetic core. And the welding foot parts arranged in pairs are respectively arranged at the two ends of the coil part. And the welding foot part is used as an input and output port of an electric signal so as to be conveniently connected with an external circuit. According to the structure of the coil part, a micro-sized conductive metal tube is adopted as a base material, an insulating groove is formed in the tube wall of the micro-sized conductive metal tube through a precise cutting or etching process, and the conductive metal tube wall is isolated into a similar structure formed by winding a coil through the insulating effect of the insulating groove.

Description

Technical Field

[0001] This application belongs to the field of inductor technology, and more specifically, relates to an inductor and an electronic device. Background Technology

[0002] With the development of the electronics and information industry, consumer electronics require the miniaturization of inductors and transformers to meet consumers' demands for compact and portable products. Therefore, small-sized, highly reliable inductors and transformers are widely used in mobile communications, computers, automotive electronics, and other fields, becoming the mainstream trend in the electronic components market.

[0003] Traditionally, inductor coils are primarily made of enameled copper wire. While this technology is mature, the limited contact area of ​​the coil leads made from enameled copper wire makes it difficult to ensure stability and reliability during soldering. This is especially true in automated assembly processes, where the small contact area is susceptible to poor soldering due to operational errors or environmental factors. Furthermore, using additional soldering methods to connect the coil to the terminal electrodes to enhance connection reliability not only increases production complexity but may also reduce the overall reliability of the inductor due to soldering stress or thermal effects. When inductor coils are wound with flat coils, the shape of the wire makes it difficult to achieve coils of minute size. Utility Model Content

[0004] The purpose of this application is to provide an inductor and an electronic device to solve the technical problem that inductors are difficult to miniaturize in the prior art.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] An inductor is provided, comprising:

[0007] magnetic core;

[0008] An inductor coil includes a coil portion and a pair of solder feet, the coil portion and the solder feet are an integral structure, the coil portion is wound around the outside of the magnetic core in a helical direction and extends along the axial direction of the magnetic core, and the pair of solder feet are respectively located at both ends of the coil portion.

[0009] As a further improvement to the above technical solution:

[0010] Optionally, the surface of the coil portion is provided with an insulating and heat-resistant coating.

[0011] Optionally, the number of turns of the coil portion is at least one turn.

[0012] Optionally, the width of each turn of the coil portion is greater than the thickness of each turn of the coil portion.

[0013] Optionally, the weld leg is arched, and the two ends of the weld leg are connection points.

[0014] Optionally, the inductor further includes a housing, with the magnetic core and the inductor coil both disposed inside the housing, and the connecting contact extending to the outside of the housing.

[0015] This application also provides an electronic device including the inductor described above.

[0016] This application also provides a method for manufacturing an inductor, comprising the following steps:

[0017] Obtain conductive metal tubes;

[0018] Welding grooves are cut at both ends of the conductive metal tube, and a spiral groove is cut in the middle section of the conductive metal tube.

[0019] The two ends of the conductive metal tube are shaped into weld foot portions along the shape of the weld foot forming groove, and the middle section of the conductive metal tube is a coil portion, so as to form an integrated inductor coil.

[0020] An insulating and heat-resistant coating is sprayed onto the outer surface of the coil section;

[0021] The inductor coil is assembled onto the magnetic core and encapsulated in a housing.

[0022] The beneficial effects of the inductor and electronic equipment provided in this application are as follows:

[0023] The inductor disclosed in this application includes a magnetic core and an inductor coil. The magnetic core, as the basic supporting structure of the inductor, provides the necessary magnetic field environment for the inductor coil. The inductor coil includes a coil section and paired solder joints, which are integrally formed to ensure that the inductor coil has no additional solder joints, thereby significantly improving the structural stability and electrical reliability of the inductor. The coil section is the main site for generating the inductive effect; it is wound helically around the outside of the magnetic core and extends along the axis of the magnetic core. The paired solder joints are located at both ends of the coil section. The solder joints serve as input and output ports for electrical signals, facilitating connection to external circuits. The construction of the coil section abandons the traditional use of enameled copper wire winding or flat coils, instead employing a tiny conductive metal tube as the base material. Insulating grooves are formed on the wall of this tiny conductive metal tube through precision cutting or etching processes. The insulating effect of the insulating grooves isolates the conductive metal tube wall into a structure similar to that of a wound coil. Since tiny conductive metal tubes are easier to obtain than tiny coils, and it is also easier to fabricate corresponding tiny coil parts based on them, it is easier to miniaturize inductors.

[0024] This application also provides an electronic device that includes the aforementioned inductor, and therefore also has the advantages of the aforementioned inductor. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A three-dimensional structural schematic diagram of the inductor coil of the first type of inductor provided in this application;

[0027] Figure 2 A schematic diagram of the main structure of the first type of inductor provided in this application;

[0028] Figure 3 A schematic diagram of the main structure of the inductor coil of the first type of inductor provided in this application;

[0029] Figure 4 A three-dimensional structural diagram of the inductor coil of the second type of inductor provided in this application;

[0030] Figure 5 A top view of the inductor coil of the second type of inductor provided in this application.

[0031] The following are the labeling elements in the figure:

[0032] 1. Magnetic core; 2. Inductor coil;

[0033] 21. Solder foot section; 22. Coil section;

[0034] 3. Shell. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0036] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of this utility model.

[0041] In the following description, suffixes such as "module," "part," "component," or "unit" are used only for the purpose of describing this utility model and have no specific meaning in themselves. Therefore, they can be used in combination.

[0042] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0043] like Figure 1 and Figure 2 As shown, this application provides an inductor including a magnetic core 1 and an inductor coil 2.

[0044] The magnetic core 1 serves as the basic supporting structure of the inductor, providing the necessary magnetic field environment for the inductor coil 2. The inductor coil 2 includes a coil section 22 and paired solder joint sections 21. The coil section 22 and solder joint sections 21 are an integral structure, ensuring that the inductor coil 2 has no additional solder joints, thereby significantly improving the structural stability and electrical reliability of the inductor. The coil section 22 is the main site for generating the inductive effect; it is wound along a spiral direction around the outside of the magnetic core 1 and extends along the axis of the magnetic core 1. The paired solder joint sections 21 are located at both ends of the coil section 22. The solder joint sections 21 serve as input and output ports for electrical signals, facilitating connection to external circuits.

[0045] The coil section 22 abandons the traditional use of enameled copper wire winding or flat coils, instead employing a tiny conductive metal tube as the base material. Insulating grooves are formed on the wall of this tiny conductive metal tube through precision cutting or etching. The insulating effect of these grooves isolates the conductive metal tube wall into a structure similar to that of a wound coil. Since tiny conductive metal tubes are easier to obtain than tiny coils, it is also easier to fabricate a corresponding tiny coil section 22 based on them, thus making it easier to miniaturize the inductor.

[0046] In one specific embodiment of this application, the surface of the coil portion 22 is provided with an insulating heat-resistant coating. This insulating heat-resistant coating, as an important protective layer for the coil portion 22, must withstand high-temperature environments of at least 180°C, thereby ensuring that the inductor maintains stable electrical performance under extreme temperature conditions. In addition to its excellent heat resistance, this insulating heat-resistant coating also achieves effective insulation between each coil turn, ensuring reliable electrical isolation between adjacent coil turns and effectively avoiding the risk of short circuits caused by direct contact between coils.

[0047] like Figure 4 and Figure 5As shown, in one specific embodiment of this application, the coil portion 22 has at least one turn. When current flows through the coil portion 22, since the coil portion 22 has at least one turn, a closed magnetic circuit can be formed, allowing the magnetic field to be enhanced and accumulated inside the coil. This magnetic field accumulation effect not only increases the inductance value of the inductor but also enables it to store and release magnetic field energy more effectively, thereby playing a role in stabilizing current, filtering, or storing energy in the circuit. Figures 1 to 3 As shown, the number of turns in the coil section 22 can also be multiple.

[0048] In one specific embodiment of this application, the width of each turn of the coil portion 22 is greater than the thickness of each turn. This arrangement allows each turn of the coil to have a flat wire shape, and the coil portion 22 can also form a structural feature similar to a flat coil, thereby making full use of space, increasing the coil fill factor, and thus achieving a higher inductance value within the same volume. At the same time, the shape of the flat coil also helps to reduce the coil resistance, improve current transmission efficiency, thereby reducing energy loss and improving the overall performance of the inductor.

[0049] like Figure 1 and Figure 4 As shown, in one specific embodiment of this application, the solder foot portion 21 is arched, and the coil portion 22 is connected at the top of the arch, thereby effectively raising the height of the coil portion 22 to form a certain height difference with the connection contact point. The two ends of the solder foot portion 21 are arched feet, which serve as connection contact points and are connected to the external circuit.

[0050] like Figure 2 As shown, in one specific embodiment of this application, the inductor further includes a housing 3. Both the magnetic core 1 and the inductor coil 2 are housed within the housing 3, effectively isolating the inductor's internal structure from potential interference from the external environment. Furthermore, the physical barrier of the housing enhances the inductor's overall anti-interference capability and durability. Simultaneously, to ensure smooth connection between the inductor and external circuits, the connection contact points extend to the outside of the housing 3. The housing 3 and the magnetic core 1 can be an integral structure, meaning they are manufactured as a single unit. This structure simplifies the assembly process and improves the overall strength and stability of the inductor. Alternatively, the housing 3 and the magnetic core 1 can be separate components, assembled using specific connection methods (such as threaded connections, snap-fit ​​connections, etc.). This structure provides greater flexibility and maintainability, facilitating the repair or replacement of the inductor.

[0051] This application also provides an electronic device, which can be a transformer, frequency converter, etc. These electronic devices all require the use of inductors. Since the electronic device includes the inductor in the above embodiments, it also has the advantages of the inductor in the above embodiments.

[0052] This application also provides a method for manufacturing an inductor, comprising the following steps:

[0053] First, select a conductive metal tube that meets the design requirements. Its diameter must be precisely matched with the expected specifications of the inductor coil to ensure the accuracy and consistency of the inductor performance.

[0054] Next, precision machining techniques, such as laser cutting or precision etching, are used to precisely cut solder foot forming grooves at both ends of the conductive metal tube. These grooves provide the geometric contour for the subsequent formation of the solder foot portion 21. Simultaneously, a spiral groove is cut in the middle section of the conductive metal tube, creating conditions for the formation of the coil portion 22.

[0055] Subsequently, the two ends of the conductive metal tube are shaped to form solder feet 21 along the shape of the solder foot forming groove, while the middle section of the conductive metal tube naturally forms the coil section 22. Since the solder feet 21 and the coil section 22 are an integral structure, the inductor coil 2 has no additional solder joints, significantly improving the structural stability and electrical reliability of the inductor.

[0056] To enhance the insulation and heat resistance of the inductor coil, an insulating and heat-resistant coating is uniformly sprayed onto the outer surface of the coil section 22. This ensures that the inductor coil maintains good electrical insulation and heat resistance during long-term operation, thereby improving the overall reliability and service life of the inductor.

[0057] Finally, the inductor coil 2 is assembled onto the magnetic core 1, and through the packaging process, it is encapsulated together with the magnetic core 1 in the housing 3. This not only ensures the compactness and stability of the internal structure of the inductor, but also further improves the inductor's anti-interference capability and environmental adaptability through the protection of the housing 3.

[0058] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An inductor, characterized in that, include: Magnetic core (1); The inductor coil (2) includes a coil portion (22) and a pair of solder feet (21). The coil portion (22) and the solder feet (21) are an integral structure. The coil portion (22) is wound around the outside of the magnetic core (1) in a spiral direction and extends along the axial direction of the magnetic core (1). The pair of solder feet (21) are respectively located at both ends of the coil portion (22).

2. The inductor as described in claim 1, characterized in that, The surface of the coil section (22) is provided with an insulating and heat-resistant coating.

3. The inductor as described in claim 1, characterized in that, The coil section (22) has at least one turn.

4. The inductor as described in claim 1, characterized in that, The width of each coil turn in the coil section (22) is greater than the thickness of each coil turn in the coil section (22).

5. The inductor as described in claim 1, characterized in that, The weld foot (21) is arched, and the two ends of the weld foot (21) are connection points.

6. The inductor as described in claim 5, characterized in that, It also includes a housing (3), the magnetic core (1) and the inductor coil (2) are both located inside the housing (3), and the connecting contact point extends to the outside of the housing (3).

7. An electronic device, characterized in that, Including the inductor as described in any one of claims 1 to 6.

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