Magnetic device and electronic apparatus

Abstract

The application relates to the technical field of magnetic devices, and discloses a magnetic device and an electronic device. The magnetic device comprises a magnetic core, a winding and a skeleton. The magnetic core comprises a middle column part and end plate parts, the end plate parts are respectively arranged at two ends of the middle column part, the winding is arranged around the middle column part, the skeleton is arranged at a bottom end of the magnetic core and is correspondingly connected to the end plate parts, and a connecting joint surface between the skeleton and the end plate parts is arranged in a stepped structure. A plurality of terminals are respectively arranged on each skeleton and are electrically connected to lead joints of the winding on the skeleton. The application improves the performance-price ratio of the device.

Description

Technical Field

[0001] This application relates to the field of magnetic device technology, specifically to a magnetic device and electronic device. Background Technology

[0002] Magnetic devices are core components in electronic devices that enable energy storage, conversion, signal isolation, and filtering. Taking a wound transformer as an example, the manufacturing process of magnetic devices typically includes a magnetic core made of magnetic material, a frame made of plastic, and windings made of insulated wire. The frame has a central hole, and the magnetic core is usually EP-type, including a central post and end plates. The central post passes through the central hole of the frame to achieve device assembly. However, this traditional EP-type structure device, because the magnetic core's central post must be assembled with the frame's central hole, results in a large device size and a large board area, making it unsuitable for the increasingly thinner and more densely integrated development trend of electronic products. Furthermore, the large frame itself, being a precision injection molded part, has a high cost, resulting in a low overall cost-effectiveness of the device. Utility Model Content

[0003] In view of this, this application provides a magnetic device and an electronic device to solve the aforementioned technical problems.

[0004] In a first aspect, embodiments of this application disclose a magnetic device, comprising: A magnetic core, the magnetic core comprising a central column portion and end plate portions, the end plate portions being respectively disposed at both ends of the central column portion; A winding, wherein the winding is wound on the central column portion; The skeleton is disposed at the bottom end of the magnetic core and is correspondingly connected to the end plate, and the connection surface between the skeleton and the end plate is arranged in a stepped structure. Terminals, a plurality of said terminals are respectively disposed on each of said frames, and are electrically connected to the lead connectors of said windings on said frames.

[0005] In one possible example, the frame is provided with a plurality of spaced functional slots, one end of each terminal is connected to the functional slot and electrically connected to the lead connector of the winding, and the other end of the terminal is parallel to the bottom end face of the frame.

[0006] In one possible example, a plurality of the terminals are arranged at intervals along a first direction on the skeleton, the first direction being the extension direction of the front / rear end of the skeleton.

[0007] In one possible example, several of the terminals are arranged in an arched, L-shaped, or C-shaped structure, and the ends of the terminals protrude from the outer wall of the skeleton along a second direction, wherein the second direction is perpendicular to the first direction.

[0008] In one possible example, in the first direction and / or the second direction, the outer wall of the skeleton remains flush with the outer wall of the end plate portion.

[0009] In one possible example, the skeleton and the end plate are respectively provided with at least a first connecting block and a second connecting block on the side facing each other, the first connecting block intruding into the end plate and the second connecting block intruding into the skeleton.

[0010] In one possible example, the skeleton is provided with a plurality of spaced wiring slots, and the wiring slots are staggered with the functional slots, and each wiring slot is provided with a branching protrusion for guiding and separating the lead wire connectors of the windings from the terminals.

[0011] In one possible example, a protective adhesive layer is also included, which covers the winding on the central post portion.

[0012] In one possible example, a magnetic cover plate is also included, which is disposed at the top of the magnetic core and connected to the end plate portion.

[0013] Secondly, embodiments of this application disclose an electronic device including the magnetic device described in any of the above embodiments.

[0014] In summary, compared with the prior art, this application discloses a magnetic device and an electronic device. The magnetic device includes a magnetic core, a winding, a frame, and terminals. The magnetic core includes a central column and end plates, with end plates respectively disposed at both ends of the central column. The winding is wound on the central column. The frame is disposed at the bottom end of the magnetic core and correspondingly connected to the end plates. The connection surface between the frame and the end plates is arranged in a stepped structure. Several terminals are respectively disposed on each frame and electrically connected to the lead connectors of the winding on the frame. That is, through the above arrangement, the winding is directly wound on the central column of the magnetic core, optimizing the frame structure, achieving the purpose of device miniaturization, reducing the device's board area, and improving the overall cost performance of the device. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the magnetic device of this application; Figure 2 This is a partial exploded view of the magnetic device in this application; Figure 3 This is a side view of the structure of the first magnetic device of this application; Figure 4 This is a side view of the structure of the second type of magnetic device in this application; Figure 5 This is a side view of the structure of the third type of magnetic device in this application.

[0017] Reference numerals: 1. Magnetic core; 11. Central column; 12. End plate; 121. Second connecting block; 2. Winding; 21. Lead wire connector; 3. Frame; 31. Functional slot; 32. First connecting block; 33. Wiring slot; 331. Branching protrusion; 4. Terminal; 5. Magnetic cover plate. Detailed Implementation

[0018] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the claims.

[0019] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, components, features, and elements with the same names in different embodiments of this application may have the same meaning or different meanings, the specific meaning of which must be determined by its interpretation in that specific embodiment or further in conjunction with the context of that specific embodiment.

[0020] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0021] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustrative purposes and has no specific meaning in itself. Therefore, "module," "part," or "unit" may be used interchangeably.

[0022] In the description of this application, it should be noted that the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not 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 on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] The technical solutions shown in this application will be described in detail below through specific embodiments. It should be noted that the order of description of the following embodiments is not intended to limit the priority of the embodiments.

[0024] Please refer to Figures 1 to 3 This application provides a magnetic device, which includes at least a magnetic core 1, a winding 2, a frame 3, and a terminal 4. By optimizing the connection structure between the magnetic core 1 and the frame 3, the magnetic device effectively reduces the overall size of the device and the area occupied on the board, thus meeting the development needs of thinner and lighter electronic products and high-density integration. At the same time, it reduces the manufacturing cost of the frame 3 and improves the cost performance of the device.

[0025] In the specific implementation process, the magnetic core 1 includes a central column 11 and an end plate 12. The end plate 12 is respectively disposed at both ends of the central column 11 to form a closed magnetic circuit structure. The frame 3 is disposed at the bottom end of the magnetic core 1 and is correspondingly connected to the end plate 12. The connection and joint surface of the frame 3 and the end plate 12 (as shown by reference numeral J in the figure) is arranged in a stepped structure. Several terminals 4 are respectively disposed on each frame 3 and are electrically connected to the lead wire connector 21 of the winding 2 on the frame 3.

[0026] Compared to the EP-type structure devices in related technologies, the stepped structure of the connection interface between the skeleton 3 and the end plate 12 not only enhances the connection stability between the skeleton 3 and the magnetic core 1, but also achieves a compact layout of the device structure, effectively reducing the lateral dimensions of the device. Furthermore, the winding 2 is directly wound on the central column 11 of the magnetic core 1. This means that the skeleton wall that wraps around the central column of the magnetic core in the traditional EP-type structure is completely eliminated. As a result, the diameter of the winding wire can be significantly reduced while maintaining the same cross-sectional area of ​​the magnetic core (i.e., the same magnetic flux capability), which greatly shortens the average turn length of each turn of the winding. This effectively reduces the DC resistance (DCR) and copper loss of the winding, improving the energy efficiency and performance of the device. At the same time, the optimized skeleton structure reduces the injection molding process cost and improves the overall cost-effectiveness of the device, making it particularly suitable for modern electronic devices with strict space and energy efficiency requirements.

[0027] The magnetic core 1 is made of magnetic material, which may include one or more of ferrite material, magnetic metal alloy material, iron-silicon alloy material or soft magnetic material to meet the working requirements of magnetic devices.

[0028] Furthermore, the central column 11 in this embodiment can be designed as a rectangular structure, so that the winding 2 can be stacked more easily, that is, more winding space is provided, and the edges and corners of the rectangular body can also be used to adjust the magnetic field distribution of the magnetic device, which helps to optimize the performance of the device and makes it easier to process and manufacture in the production process.

[0029] In this embodiment, the winding 2 can be made of copper enameled wire. The winding 2 consists of at least one enameled wire. It is understood that metallic copper is an excellent conductive material with low resistance. Using copper enameled wire as the winding 2 can reduce the resistance of the inductor and improve the current transmission efficiency. In addition, copper has good thermal conductivity, which can effectively conduct heat away from the winding 2, avoiding the degradation or damage of inductor performance due to excessive temperature. On the other hand, copper enameled wire can usually withstand high temperatures and is suitable for applications in high-temperature environments. This is very important for magnetic devices that need to operate under high-temperature conditions. Furthermore, copper enameled wire has high corrosion resistance and can resist the erosion of some chemical substances, thereby extending the service life of magnetic devices.

[0030] In one example, to further improve the reliability and mechanical strength of the device, the magnetic device of this application embodiment also includes a protective adhesive layer (not shown). The protective adhesive layer covers the winding 2 on the central column 11, thereby fixing the turns of the winding 2 to prevent them from loosening or shifting, and enhancing the insulation strength between the windings 2 and between the winding 2 and the magnetic core 1, ensuring electrical safety. At the same time, the protective adhesive layer provides effective physical protection for the winding 2 that is directly exposed to the outside, resisting the influence of external environmental factors such as moisture, dust, and chemical corrosion, and significantly improving the long-term working stability and service life of the device.

[0031] Preferably, the protective adhesive layer includes an adhesive material with good thermal conductivity (such as epoxy resin, silicone, etc.) to improve the heat dissipation conditions of winding 2 and facilitate the heat dissipation of the device when it is operating at a large current.

[0032] Optionally, the protective adhesive layer may include insulating tape.

[0033] In one example, the frame 3 has several spaced functional slots 31. The distribution and number of these functional slots 31 correspond to the number of terminals and wiring requirements of the device. One end of each terminal 4 is connected to the functional slot 31 and electrically connected to the lead connector 21 of the winding 2. That is, the lead connector 21 of the winding 2 is guided to the functional slot 31 and achieves a stable electrical connection with the terminal 4 located therein. For example, the electrical connection is fixed by soldering to ensure the reliability of the electrical connection. The other end of the terminal 4 is parallel to the bottom end face of the frame 3. This design makes the soldering feet of the terminal 4 flush with or coplanar with the bottom of the frame 3. When the device is mounted on the circuit board, it can achieve excellent mounting stability, which is very suitable for surface mount technology and helps to reduce the vertical space occupied by the entire device on the circuit board.

[0034] Preferably, in the magnetic device of this application embodiment, the frame 3 is further provided with a fine structure for organizing the lead wire routing. Specifically, the frame 3 is provided with a number of spaced-apart routing grooves 33, and the routing grooves 33 and the functional grooves 31 are staggered. This staggered layout can effectively disperse electrical connection points, avoid the concentrated crossing of leads, and ensure that the multiple leads of the winding 2 can be guided to their respective terminals 4 in a clear and orderly path.

[0035] Furthermore, each wiring trough 33 is provided with a wire-splitting protrusion 331. The wire-splitting protrusion 331 is a protruding structure in the wiring trough 33, which is used to guide and separate the lead wire connector 21 of the winding 2 from the terminal 4. That is, by using the wire-splitting protrusion 331 as the turning point of the lead wire, the lead wire is forced to turn along the preset safe path to prevent it from overlapping at will, and to separate different leads that may exist in the same wiring trough 33 from each other, thereby effectively improving insulation safety and preventing potential corona discharge or short circuit.

[0036] Optionally, the splitting protrusion 331 gradually tapers from the bottom of the wiring groove 33 to the top of the wiring groove 33. That is, from the base where the splitting protrusion 331 connects to the bottom of the wiring groove 33 to its free end at the top, the cross-sectional area of ​​the splitting protrusion 331 continuously decreases, forming a stable and smooth cone shape. The gradually tapering slope of the splitting protrusion 331 naturally constitutes a guiding channel, which can smoothly guide the lead wire and naturally limit it to the correct path, preventing the lead wire from deviating from the preset position.

[0037] It should be noted that, with Figure 1Taking the constructed XYZ spatial coordinates as an example, the X-axis direction can be regarded as the first direction in this embodiment, that is, the extension direction of the front / rear end of the skeleton 3, which can also be regarded as the direction perpendicular to the front / rear end face of the skeleton 3. The Y-axis direction can be regarded as the second direction in this embodiment, that is, the extension direction of the left / right side of the skeleton 3, which can also be regarded as the direction perpendicular to the left / right side face of the skeleton 3. The Z-axis direction can be regarded as the third direction in this embodiment, that is, the extension direction of the upper / lower end of the skeleton 3, which can also be regarded as the direction perpendicular to the upper / lower end face of the skeleton 3. The first direction, the second direction, and the third direction are perpendicular to each other. Of course, the direction design in this embodiment is not limited to this. XYZ can also be any other direction that is perpendicular to each other in space in actual working needs, which will not be elaborated here.

[0038] In the magnetic device of this embodiment, the structural design on the frame 3 is further optimized to achieve a regular electrical layout and stable connection characteristics. Specifically, a number of functional slots 31 and terminals 4 are arranged at intervals along the first direction on the frame 3.

[0039] Therefore, the electrical connection points of the device are linearly and orderly distributed on the frame 3, with a clear layout, which facilitates the automated winding and lead welding of the winding 2, improves production efficiency and consistency, and the spaced arrangement ensures that there is sufficient electrical clearance between adjacent terminals 4, effectively preventing the risk of creepage or short circuit that may be caused by the spacing being too close, thus improving the safety and reliability of the product. At the same time, the linear arrangement is very suitable for the rectangular or long strip shape of magnetic devices, which can make the most effective use of the limited bottom space of the frame 3, which is conducive to the overall miniaturization design of the device.

[0040] It should be noted that the end of terminal 4 protrudes from the outer wall of the frame 3 along the second direction, that is, the end of terminal 4 extends laterally outward toward the frame 3, so that its lateral edge exceeds the plane of the corresponding side wall of the frame 3. This provides more ample and intuitive visual and operational space for subsequent welding operations, so as to facilitate the precise operation of automated welding equipment and facilitate subsequent optical inspection of weld quality, effectively improving production yield. At the same time, this protruding design ensures that there is sufficient space between terminal 4 and end plate 12 in the lateral direction, forming a safe electrical clearance.

[0041] Preferably, a plurality of terminals 4 are arranged in a C-shape. Specifically, in this embodiment, the C-shaped terminal 4 is a flexible whole, and its typical structure includes a connecting part, a contact arm and a soldering foot. The connecting part, as the middle part of the terminal 4, can be embedded in the frame 3 as an anchor point of the structure. The contact arm extends upward from the connecting part and is located on the functional slot 31 for contacting and electrically connecting with the lead connector 21 of the winding 2. The soldering foot bends downward and outward from the connecting part to form a soldering plane parallel to the bottom end face of the frame 3 for surface mounting of the device on the circuit board.

[0042] Thus, terminal 4 achieves all the functions of fixing inside the frame 3, connecting with the winding 2, and external welding through a C-shaped design. At the same time, the elastic structure of the C-shape can absorb some of the mechanical stress generated during welding to the circuit board or due to thermal expansion and contraction, reducing the direct impact on the frame 3 and internal electrical connection points, improving connection reliability and vibration resistance. In addition, the elastic contact arm can ensure a lasting and stable pressure contact with the winding lead, and it is not easy to loosen even in a vibration environment, thus ensuring the integrity of the electrical connection.

[0043] As an optional solution in this embodiment, refer to Figure 4 Several terminals 4 can also be arranged in an arched structure, i.e. a seagull-shaped structure. The seagull-shaped structure is a continuous metal piece that is molded in one piece. Its shape simulates the outline of a seagull spreading its wings. The main body of the terminal 4 can be embedded in the frame 3 as the anchor point of the structure, serving as the main support and fixing area. One wing part is used to contact and electrically connect with the lead connector 21 of the winding 2, and the other wing part forms a wide welding plane parallel to the bottom end face of the frame 3 for surface mounting of the device on the circuit board.

[0044] The symmetrical or streamlined arched structure can efficiently disperse and absorb the thermomechanical stress from the PCB board, significantly improving the reliability of terminal 4 under temperature cycling and vibration environments, preventing solder joint cracking, and the wide soldering plane provides sufficient soldering area for solder paste, which is conducive to forming reliable solder joints. At the same time, its unique shape also facilitates pre-embedding and fixing during injection molding or precise insertion during assembly.

[0045] As an optional solution in this embodiment, refer to Figure 5 Several terminals 4 can also be arranged in an L-shaped structure. The L-shaped structure is formed by bending metal sheets and can include a vertical fixing part and a horizontal welding part. The vertical fixing part is perpendicular to the bottom end face of the frame 3 and is firmly embedded or pressed into the frame 3 to realize the main fixing and positioning of the terminals 4 on the frame 3. The horizontal welding part is bent and extended from the bottom end of the vertical fixing part in the horizontal direction to form a welding plane parallel to the bottom end face of the frame 3 for surface mounting of the device on the circuit board.

[0046] The L-shaped structure, with its regular right-angle shape, facilitates pre-embedding during skeleton injection molding or subsequent press assembly, which helps improve production and assembly efficiency. Furthermore, the vertical connection method allows the electrical connection area and welding area to be spatially staggered, which helps to achieve effective electrical interconnection within a compact skeleton layout.

[0047] In one example, in the magnetic device of this embodiment, the outer wall of the frame 3 is flush with the outer wall of the end plate portion 12 in the first and / or second directions. Specifically, in the first direction, the front end face of the frame 3 is coplanar with the front end face of the end plate portion 12, and / or the rear end face of the frame 3 is coplanar with the rear end face of the end plate portion 12; in the second direction, the left side face of the frame 3 is coplanar with the left side face of the end plate portion 12, and / or the right side face of the frame 3 is coplanar with the right side face of the end plate portion 12.

[0048] Based on this flush relationship, the device size is minimized, eliminating the extra dimensional redundancy caused by the skeleton protruding from the magnetic core in the traditional structure. This allows the device to achieve the theoretical minimum structural envelope in one or two defined directions, greatly optimizing space utilization. Furthermore, the smooth transition between the outer wall of the skeleton 3 and the outer wall of the magnetic core 1 forms a neat and regular overall appearance, avoiding steps or protrusions and enhancing the structural integrity and manufacturing precision of the product. At the same time, the regular square or rectangular shape facilitates positioning, gripping, and mounting on automated production lines, improving production efficiency and assembly accuracy.

[0049] In one possible implementation of this application, at least one first connecting block 32 and a second connecting block 121 are respectively provided on the face-to-face side of the skeleton 3 and the end plate portion 12. The first connecting block 32 penetrates into the end plate portion 12, and the second connecting block 121 penetrates into the skeleton 3. This structure, in which the connecting blocks penetrate each other to achieve interlocking, constitutes a stable interlocking mechanism. The first connecting block 32 and the second connecting block 121 cooperate with each other, not only restricting the separation of the skeleton 3 and the magnetic core 1 in the vertical direction (third direction), but also effectively resisting the shearing and torsional forces between the device components in the horizontal plane (first direction and second direction), preventing the separation of the two components. During use, relative displacement or misalignment occurs, greatly improving the mechanical strength and reliability of the entire device. The "intrusive" design of the connecting blocks significantly increases the actual contact and engagement area between the skeleton 3 and the magnetic core 1. This helps to distribute stress more evenly and withstand greater external mechanical impacts, avoiding the weak connection problems that may be caused by dispensing or simple planar bonding. Therefore, by setting the mutually intrusive first connecting block 32 and second connecting block 121, this embodiment establishes an efficient and reliable mechanical interlocking connection between the skeleton 3 and the end plate portion 12 of the magnetic core 1, laying a solid structural foundation for the long-term stable operation of the device.

[0050] Based on the stepped structure of the connection surface between the skeleton 3 and the end plate 12, multiple first connecting blocks 32 and second connecting blocks 121 can be provided in this embodiment. Multiple first connecting blocks 32 and multiple second connecting blocks 121 are staggered between the skeleton 3 and the end plate 12, forming a sawtooth or wave-shaped connection surface. This multi-tooth interlocking sawtooth structure constitutes an extremely stable mechanical interlocking mechanism, providing multiple clear positioning references for the assembly of the skeleton 3 and the magnetic core 1, playing a strong role in preventing errors, and making the connection smoother and more stable, facilitating fast and accurate automated assembly, and ensuring product consistency.

[0051] In one example, the magnetic device also includes a magnetic cover plate 5. Specifically, the magnetic cover plate 5 is located at the top of the magnetic core 1 and is connected to the end plate portion 12. The magnetic cover plate 5 and the magnetic core 1 together form a complete closed magnetic circuit, which can effectively reduce magnetic leakage, improve magnetic flux efficiency, thereby improving key electrical parameters such as inductance and coupling coefficient of the device, and reduce electromagnetic interference. In addition, the magnetic cover plate 5 can better constrain the magnetic field and limit its diffusion to the outside, thereby reducing electromagnetic interference to surrounding sensitive circuits and meeting the stringent requirements for electromagnetic compatibility in high-density integrated design.

[0052] Optionally, the magnetic cover plate 5 is fixedly connected to the end plate portion 12 by adhesive bonding.

[0053] This application also discloses an electronic device, including a magnetic device as described in any of the above embodiments. For other working principles and processes of the electronic device in this embodiment, please refer to the description of the magnetic device in the above embodiment, which will not be repeated here.

[0054] The magnetic devices and electronic devices provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. It should be noted that the descriptions of each embodiment in this application have different emphases. Parts not described in detail or in a certain embodiment can be referred to the relevant descriptions of other embodiments.

[0055] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. The technical features of the technical solution of this application can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are also included within the patent protection scope of this application, as long as the combination of these technical features does not contradict each other.

Claims

1. A magnetic device, characterized in that, include: A magnetic core, the magnetic core comprising a central column portion and end plate portions, the end plate portions being respectively disposed at both ends of the central column portion; A winding, wherein the winding is wound on the central column portion; The skeleton is disposed at the bottom end of the magnetic core and is correspondingly connected to the end plate, and the connection surface between the skeleton and the end plate is arranged in a stepped structure. Terminals, a plurality of said terminals are respectively disposed on each of said frames, and are electrically connected to the lead connectors of said windings on said frames.

2. The magnetic device as described in claim 1, characterized in that, The frame is provided with a number of spaced functional slots. One end of each terminal is connected to the functional slot and electrically connected to the lead connector of the winding, and the other end of the terminal is parallel to the bottom end face of the frame.

3. The magnetic device as described in claim 1, characterized in that, A plurality of the terminals are arranged at intervals along a first direction on the frame, the first direction being the extension direction of the front / rear end of the frame.

4. The magnetic device as described in claim 3, characterized in that, The terminals are arranged in an arched, L-shaped or C-shaped structure, and the ends of the terminals protrude from the outer wall of the skeleton along a second direction, wherein the second direction is perpendicular to the first direction.

5. The magnetic device as described in claim 4, characterized in that, In the first direction and / or the second direction, the outer wall of the skeleton remains flush with the outer wall of the end plate portion.

6. The magnetic device as described in claim 1, characterized in that, At least one first connecting block and a second connecting block are respectively provided on the side of the skeleton and the end plate facing each other, the first connecting block intruding into the end plate and the second connecting block intruding into the skeleton.

7. The magnetic device as described in claim 2, characterized in that, The frame is provided with a number of spaced wiring grooves, and the wiring grooves are staggered with the functional grooves. Each wiring groove is provided with a wire-separating protrusion for guiding and separating the lead wire connectors of the windings from the terminals.

8. The magnetic device as described in claim 1, characterized in that, It also includes a protective adhesive layer that covers the winding on the central column portion.

9. The magnetic device as described in claim 1, characterized in that, It also includes a magnetic cover plate, which is disposed at the top of the magnetic core and is connected to the end plate portion.

10. An electronic device, characterized in that, Including the magnetic device as described in any one of claims 1 to 9.

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