Terminal assembly, magnetic device, and electronic device

Abstract

The application relates to the technical field of magnetic device, and discloses a terminal assembly, a magnetic device and electronic equipment. The terminal assembly comprises a material belt and a terminal structure. A plurality of terminal structures are arranged on the material belt and used for batch connection with lead wires of a wire package of the magnetic device. The terminal structure comprises a cutting part, a pin part and an ear part. The cutting part is connected with the material belt and the pin part respectively, and the ear part is connected with one end of the pin part away from the cutting part. The cutting part is used for assisting in fixing the lead wires of the wire package. The ear part is used for corresponding fixed electrical connection with the lead wires of the wire package. The connection part of the cutting part and the pin part is used for cutting and separating the material belt and the terminal structure. The pin part is bent relative to the ear part and adheres to an end surface of a shell of the magnetic device, and is used as an external pin of the magnetic device. The application improves device reliability and assembly efficiency.

Description

Technical Field

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

[0002] Magnetic devices are core components in electronic devices for energy storage, conversion, signal isolation, and filtering. Taking network transformers as an example, their performance, reliability, and size directly affect the efficiency, safety, and miniaturization of the entire electronic system. However, existing network transformer manufacturing processes, especially the electrical connection between the leads and pins of the coil, have long suffered from technical problems that have not been effectively solved. In related technologies, thermocompression welding is often used to connect the leads and pins of the coil. Pre-formed terminal pins are welded to the leads of the coil using thermocompression welding, and then the pins and welding points are encapsulated as a whole. However, this method suffers from insufficient welding reliability and low manufacturing efficiency. Utility Model Content

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

[0004] In a first aspect, embodiments of this application disclose a terminal assembly applied to a magnetic device, comprising: The material strip and terminal structure, wherein a plurality of the terminal structures are arranged on the material strip for batch connection with the leads of the coil of the magnetic device and assembly onto the housing of the magnetic device; The terminal structure includes a cutting portion, a lead portion, and an ear portion. The cutting portion is connected to the material strip and the lead portion respectively, and the ear portion is connected to the end of the lead portion away from the cutting portion. The cutting portion is used to assist in fixing the lead wire of the coil, and the ear portion is used to fix the electrical connection with the lead wire of the coil. The connection between the cutting portion and the lead portion is used to cut and separate the material strip and the terminal structure, and the lead portion is used to be bent relative to the ear portion and attached to the end face of the housing of the magnetic device to serve as an external lead of the magnetic device.

[0005] In one possible example, the strip has a plurality of linearly arranged assembly windows, and each assembly window has a plurality of terminal structures symmetrically arranged therein.

[0006] In one possible example, the ear portion includes a first body and a first snap fastener disposed on the first body. The first body is integrally connected to one end of the pin portion away from the cut portion, and the first snap fastener is bent toward the lead wire of the coil for pressing and fixing the lead wire of the coil.

[0007] In one possible example, the first snap-fit ​​body is configured in an I-shape, L-shape, C-shape, or U-shape.

[0008] In one possible example, the pin portion includes an integrally formed bent body and a patch body, the bent body being integrally connected to the ear portion, the patch body being integrally connected to the cut portion, the bent body being used to bend relative to the ear portion, and the patch body being used to attach to the housing end face of the magnetic device as an external pin.

[0009] In one possible example, the cutting portion includes a second body and a second snap fastener disposed on the second body, the second body being integrally connected to one end of the pin portion opposite to the ear portion, and the second snap fastener being used to assist in fixing the lead wire of the coil.

[0010] In one possible example, the second snap-fit ​​body is configured in a C-shape or U-shape.

[0011] In one possible example, a first marking groove is provided at the connection between the cutting portion and the pin portion for cutting and separating the material strip and the terminal structure, and a second marking groove is provided at the connection between the ear portion and the pin portion for bending the pin portion relative to the ear portion.

[0012] Secondly, embodiments of this application disclose a magnetic device, including: Housing, coil, and terminal structure as described in any of the above embodiments; At least one of the coils is disposed in the receiving cavity of the housing, and a plurality of functional slots are recessed on the bottom surface of the housing. The ear portion of the terminal structure is correspondingly connected to the functional slots. Each lead of the coil is correspondingly electrically connected to the ear portion, and the pin portion of the terminal structure is attached to the bottom end face of the housing.

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

[0014] In summary, compared with the prior art, this application discloses a terminal assembly, a magnetic device, and an electronic device. The terminal assembly includes a strip and terminal structures, with a plurality of terminal structures arranged on the strip. Each terminal structure includes a cutting portion, a lead portion, and an ear portion. The cutting portion is connected to the strip and the lead portion respectively, and the ear portion is connected to the end of the lead portion away from the cutting portion. The cutting portion is used to assist in fixing the lead wire of the coil, and the ear portion is used to fix the electrical connection with the lead wire of the coil. The connection between the cutting portion and the lead portion is used to cut and separate the strip and the terminal structure, and the lead portion is used to be bent relative to the ear portion and attached to the end face of the housing of the magnetic device to serve as an external lead of the magnetic device. Thus, the reliability of the device and the assembly efficiency are improved through the above-mentioned configuration. 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 schematic diagram of the structure of the magnetic device in this application; Figure 2 This is a schematic diagram of the assembly structure of the terminal assembly of this application; Figure 3 yes Figure 2 Enlarged view of point A; Figure 4 yes Figure 2 Enlarged view of point B; Figure 5 This is a schematic diagram of the terminal structure after it has been cut and bent according to this application.

[0017] Reference numerals: 1. Material strip; 11. Assembly window; 2. Terminal structure; 3. Cutting part; 31. Second main body; 32. Second snap-fit ​​body; 33. First marking slot; 4. Pin part; 41. Bending body; 42. Patch body; 43. Second marking slot; 5. Ear part; 51. First main body; 52. First snap-fit ​​body; 10. Housing; 10a. Top end; 10b. Bottom end; 20. Wire coil; 101. Functional slot; 201. Lead wire. 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] refer to Figure 1 and Figure 2 The terminal assembly provided in this application embodiment is applied to magnetic devices and includes a strip 1 and a terminal structure 2.

[0025] It is understood that the magnetic device includes a housing 10 and a coil 20. At least one coil 20 can be disposed in the accommodating cavity of the housing 10, and each lead 201 of the coil 20 is electrically connected to the terminal structure 2 on the housing 10. The coil 20 may include a magnetic ring and a winding wound on the magnetic ring, and the lead-out end of the winding is the lead 201.

[0026] In the specific implementation process, several terminal structures 2 of the terminal assembly in this application embodiment are arranged on the material strip 1 to form an integral carrier that can be batch transported and operated. At the same time, the terminal structure 2 is used to batch connect with the lead wire 201 of the coil 20 and is assembled onto the housing 10 of the magnetic device.

[0027] For details, please refer to [link / reference]. Figures 3 to 5 The single terminal structure 2 includes a cutting part 3, a lead part 4 and an ear part 5. The cutting part 3 serves as a connecting bridge between the terminal structure 2 and the material strip 1, connecting the material strip 1 and the lead part 4 respectively. The ear part 5 is connected to the end of the lead part 4 that is away from the cutting part 3.

[0028] The cutting part 3 is used to assist in fixing the lead wire 201 of the coil 20, the ear part 5 is used to fix the electrical connection with the lead wire 201 of the coil 20, the connection between the cutting part 3 and the pin part 4 is used to cut the separation strip 1 and the terminal structure 2, and the pin part 4 is used to bend relative to the ear part 5 and fit against the end face of the housing 10 of the magnetic device to serve as the external pin of the magnetic device.

[0029] Therefore, in the assembly process of magnetic devices, by batch integrating the terminal structure 2 onto the material strip 1, the terminal structure 2 and the lead 201 of the coil 20 can be batch connected. During assembly, each coil 20 can be operated to correspond to the terminal structure 2. With the assistance of the cutting part 3 to fix the lead 201 of the coil 20, the ear part 5 can reliably be fixedly electrically connected to the lead 201 of the coil 20 to ensure the reliability of the electrical connection between the device lead and the pin. After cutting and separating the material strip 1 and the terminal structure 2 at the connection between the cutting part 3 and the pin part 4, the pin part 4 can be bent relative to the ear part 5 in batches for attaching to the end face of the housing 10 of the magnetic device as the external pin of the magnetic device, thereby improving the assembly efficiency and production cycle of the device.

[0030] In a preferred application example of this application, the assembly scheme of the magnetic device based on the terminal assembly includes: First, providing a wound coil 20 and the terminal assembly as described above, the terminal assembly including a strip 1 and a terminal structure 2; then, performing a batch electrical connection operation, connecting the leads 201 of the coil 20 one-to-one with the lugs 5, and fixing the lugs 5 and leads 201 in a fixed electrical connection with the leads 201 under the assistance of the cutting part 3; next, batch assembling the housing 10 and the terminal structure 2, during which the coil 20 is housed and positioned within the housing cavity of the housing 10, and Further fixation and encapsulation can be achieved through glue injection; then, the material strip 1 is separated, and the terminal structures 2 are uniformly separated from the material strip 1 by cutting the connection between the cutting part 3 and the lead part 4; finally, the external lead is formed, and the lead part 4 is bent relative to the ear part 5 in batches to make it flatly fit on the end face of the housing 10, thereby forming the final external lead of the magnetic device; thus, this assembly application realizes the batch delivery and positioning of the terminal structure 2 through the material strip 1, and improves the assembly efficiency, production cycle and product consistency of the magnetic device through continuous batch operation steps.

[0031] In one example, the strip 1 has several linearly arranged assembly windows 11, and each assembly window 11 has multiple terminal structures 2 symmetrically arranged in it. That is, the strip 1 has several assembly windows 11 arranged linearly along its length. The assembly window 11 can be a through hole or groove structure that penetrates the body of the strip 1. In each assembly window 11, multiple terminal structures are symmetrically arranged. Specifically, these terminal structures 2 are fixed to the peripheral frame of the assembly window 11 by their cutting parts 3, and their corresponding functional parts such as the ear parts 5 are suspended in the space of the assembly window 11.

[0032] This provides a clear operating window and positioning reference for the assembly of magnetic devices. When connecting the lead 201 of the coil 20 to the terminal structure 2, or assembling the housing 10 to the terminal structure 2, the operation and alignment can be precisely performed through the space of the assembly window 11, avoiding interference with the material strip 1 body, thereby ensuring the smoothness and accuracy of the batch assembly process.

[0033] In one example, the ear portion 5 includes a first body 51 and a first snap-fit ​​body 52 disposed on the first body 51. The first body 51 is integrally connected to the end of the lead portion 4 away from the cut portion 3 to ensure the overall strength of the terminal structure 2. The first snap-fit ​​body 52 is bent toward the lead wire 201 of the coil 20 to press and fix the lead wire 201 of the coil 20, so as to ensure a stable connection between the ear portion 5 and the lead wire 201 of the coil 20, thereby realizing a firm mechanical fixation and reliable electrical connection between the lead wire 201 and the terminal structure 2.

[0034] Preferably, the lead wire 201 of the coil 20 and the ear portion 5 are fixedly electrically connected by laser welding.

[0035] Optionally, for leads 201 with a thick insulating varnish film on their surface, a laser stripping process can be used for pretreatment to remove the varnish film in a 180° area on the surface of the leads 201, thereby exposing the underlying metal conductor. An appropriate amount of solder paste is then applied to the stripped area of ​​the leads 201 and the area of ​​the ear portion 5 in contact with it. A laser beam is then applied to the solder joint, and the laser energy causes the solder paste to melt rapidly and wet the cleaned metal surface. Through this laser welding process, a strong metallurgical bond is formed between the leads 201 and the first latching body 52 and the first main body 51 of the ear portion 5, thereby achieving a stable and reliable electrical connection and mechanical fixation, and improving the reliability of the device.

[0036] Furthermore, the first snap-fit ​​body 52 can be constructed in various specific forms to adapt to different wire diameters, connection strengths, and process requirements. Specifically, the first snap-fit ​​body 52 can be configured in an I-shape, L-shape, C-shape, or U-shape. When the first snap-fit ​​body 52 is in an I-shape, it essentially forms a planar pressure plate for pressing the lead wire 201, which is the simplest structure. When it is in an L-shape, it can cover and limit the lead wire 201 from the side and above. When it is in a C-shape or U-shape, it can achieve a larger area of ​​wrapping around the lead wire 201, providing stronger clamping force and a larger welding contact area, thereby obtaining higher connection reliability and mechanical strength. This diversified structural design allows the magnetic device of this embodiment to flexibly match different application scenarios from conventional to high reliability.

[0037] In one example, the lead portion 4 includes an integrally formed bent body 41 and a patch body 42. The bent body 41 is integrally connected to the ear portion 5 to form a support transition section of the lead portion 4, and the patch body 42 is integrally connected to the cutting portion 3 to form the end of the lead portion 4. In the aforementioned assembly process, the bent body 41 is designed to be bent along its connection with the ear portion 5. Through this bending operation, the patch body 42 connected to the bent body 41 can finally be flatly attached to the end face of the housing 10 of the magnetic device, thereby serving as an external lead for surface mount technology (SMT) soldering of the magnetic device. That is, the bent body 41 is used to bend relative to the ear portion 5, and the patch body 42 is used to attach to the end face of the housing of the magnetic device as an external lead. This ensures that the device lead can be accurately positioned after bending and provides a wide and flat soldering surface, improving the soldering reliability and stability of the device on external connection devices.

[0038] Preferably, the bent body 41 is integrally connected with the first body 51 to ensure the overall strength of the terminal structure 2.

[0039] In one example, the cutting part 3 includes a second body 31 and a second snap-fit ​​body 32 disposed on the second body 31. The second body 31 is integrally connected to one end of the pin part 4 away from the ear part 5, and the second snap-fit ​​body 32 is used to assist in fixing the lead wire of the coil.

[0040] That is, the second main body 31 serves as the main load-bearing structure of the cutting part 3. One end of it is integrally connected to the end of the pin part 4 that is away from the ear part 5, and the other end is connected to the material strip 1. The second buckle body 32 can be formed by stamping and bending a part of the material of the second main body 31. It is constructed to assist in fixing the lead wire 201 of the coil 20 during the assembly process.

[0041] Specifically, before electrically connecting the lead wire 201 to the ear portion 5, the lead wire 201 extends from the ear portion 5 to the second latching body 32. The second latching body 32 can pre-position and temporarily fix the lead wire 201, effectively preventing it from shifting during subsequent handling or welding, thereby ensuring the accuracy of the alignment between the lead wire 201 and the ear portion 5 and improving the precision and reliability of the entire assembly process.

[0042] Furthermore, the second snap-fit ​​body 32 can be constructed in various specific forms to adapt to different wire diameters and fixing requirements. Specifically, the second snap-fit ​​body 32 is arranged in a C-shape or a U-shape.

[0043] When the second latch body 32 is C-shaped or U-shaped, it forms an annular or semi-annular latch groove with an opening. This structure can effectively limit and hold the lead wire 201 of the coil 20 from multiple directions, providing a more stable pre-fixing effect for the lead wire 201 during assembly, preventing it from accidentally coming out of the latch, thereby ensuring the alignment accuracy and operational reliability when making electrical connections with the coil ear 5, thus improving the reliability of the device.

[0044] Preferably, the second body 31 is integrally connected with the patch body 42 to ensure the overall strength of the terminal structure 2.

[0045] In one example, a first marking groove 33 is provided at the connection between the cutting part 3 and the pin part 4 for cutting and separating the strip 1 and the terminal structure 2. The first marking groove 33 can form a U-shaped or V-shaped notch by partially thinning the material, thus forming a preset break line, providing precise guidance and positioning for the punching die, and for clean and neat cutting and separating the strip 1 and the terminal structure 2 in the later stage of the assembly process.

[0046] In one example, a second marking slot 43 is provided at the connection between the ear portion 5 and the pin portion 4 for bending the pin portion 4 relative to the ear portion 5. The second marking slot 43 can also be formed by locally thinning the material to form a U-shaped or V-shaped notch, forming a preset bending line to guide and ensure that the pin portion 4 can be bent relative to the ear portion 5 with precise angle and high consistency, thereby forming a standardized external pin.

[0047] It should be noted that after the bending operation is completed, the pin portion 4 is configured to be parallel to the ear portion 5.

[0048] Preferably, in the bent state, the patch body 42 of the lead portion 4 and the first body 51 of the ear portion 5 are parallel to each other. This parallel spatial layout allows the patch body 42 to obtain the maximum and uniform contact area, thereby stably and flatly attaching to the end face of the housing 10 of the magnetic device. This not only ensures the structural stability when used as an external lead, but also provides excellent coplanarity when it is surface mounted (SMT) on external devices, greatly improving the reliability and yield of soldering.

[0049] This application also discloses a magnetic device, including a housing 10, a coil 20, and a terminal structure 2 as described in any of the foregoing embodiments.

[0050] In the specific implementation process, at least one wire coil 20 is disposed in the accommodating cavity of the housing 10, and a plurality of functional slots 101 are recessed on the bottom surface of the housing 10. The position of the functional slots 101 corresponds to the arrangement of the terminal structure 2. The ear portion 5 of the terminal structure 2 is connected to the functional slot 101. Each lead 201 of the wire coil 20 is electrically connected to the ear portion 5. The pin portion 4 of the terminal structure 2 is attached to the bottom end face of the housing 10.

[0051] Preferably, the pin portion 4, which is attached to the bottom end face of the housing 10, has its end flush with the outer wall of the accommodating cavity. That is, the inner edge of the pin portion 4 is aligned and overlapped with the lateral boundary of the accommodating cavity of the housing 10. This flush structural design can avoid the problem of increased overall device length caused by excessive exposure of device pins, and also avoid deformation or damage that may be caused during transportation or assembly due to excessively long pins, thereby improving the structural stability of the device.

[0052] Optionally, the housing 10 has a rectangular structure design, with a top end 10a and a bottom end 10b opposite each other, and a sidewall connecting the top end 10a and the bottom end 10b.

[0053] In one example, the ear portion 5 is wrapped in a fixing adhesive layer (not shown) within the functional groove 101. Specifically, after each lead 201 is electrically connected to the ear portion 5, it is wrapped in the fixing adhesive layer within the functional groove 101. This prevents the solder joint between the lead 201 and the ear portion 5 from loosening or falling off due to vibration or mechanical impact during use, thereby maintaining the welding quality and avoiding poor electrical contact caused by solder joint detachment. At the same time, the wrapping of the fixing adhesive layer helps reduce stress fatigue caused by factors such as vibration and temperature changes at the solder joint, extending the service life of the welded connection. The fixing adhesive layer also acts as a buffer, absorbing vibrations that may come from the outside, reducing the concentration of mechanical stress on the solder joint, improving the fatigue resistance of the welded joint, and preventing external environmental contaminants such as moisture and dust from entering the solder joint, reducing electrical faults caused by external factors, ensuring the long-term electrical stability of the solder joint. As an insulating layer, it reduces the risk of electrical short circuits or signal interference, improving the reliability of the electrical system.

[0054] Preferably, the functional groove 101 gradually expands from the top end 10a of the housing 10 toward the bottom end 10b of the housing 10. The gradual expansion design of the functional groove 101 makes it easier to install the lead wire 201 when connecting the ear portion 5. As the groove gradually expands downward, it allows the lead wire 201 to obtain a wider space during installation, reducing installation resistance, improving assembly efficiency, and also facilitating the fixing of the adhesive layer in the functional groove 101.

[0055] In one example, the housing 10 of the magnetic device can be equipped with two coils 20, which are arranged at intervals. The leads of the two coils 20 are electrically connected to the ear portion 5. According to the actual environmental requirements, the magnetic device can form a multi-magnetic ring structure through the design of the two coils 20. For example, one coil 20 may include a transformer magnetic ring and the other coil 20 may include a common-mode magnetic ring. Thus, the magnetic device performs voltage conversion through its one coil 20 and signal filtering through the other coil 20, thereby improving the overall performance of the device.

[0056] 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 foregoing embodiments, which will not be repeated here.

[0057] The terminal assembly, magnetic device, and electronic device 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 focuses. For parts not described or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0058] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the above embodiments are only for the purpose of helping to understand the core ideas of the present application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present application. Therefore, the content of this specification should not be construed as a limitation of the present application. Moreover, the above are only preferred embodiments of the present application and do not limit the patent scope of the present application. The technical features of the technical solution of the present application can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. Any equivalent structural or procedural transformations made using the content of the present application specification and drawings, or direct or indirect applications in other related technical fields, are also included in the patent protection scope of the present application, as long as the combination of these technical features does not contradict each other.

Claims

1. A terminal assembly for use in magnetic devices, characterized in that, include: The material strip and terminal structure, wherein a plurality of the terminal structures are arranged on the material strip for batch connection with the leads of the coil of the magnetic device and assembly onto the housing of the magnetic device; The terminal structure includes a cutting portion, a lead portion, and an ear portion. The cutting portion is connected to the material strip and the lead portion respectively, and the ear portion is connected to the end of the lead portion away from the cutting portion. The cutting portion is used to assist in fixing the lead wire of the coil, and the ear portion is used to fix the electrical connection with the lead wire of the coil. The connection between the cutting portion and the lead portion is used to cut and separate the material strip and the terminal structure, and the lead portion is used to be bent relative to the ear portion and attached to the end face of the housing of the magnetic device to serve as an external lead of the magnetic device.

2. The terminal assembly as claimed in claim 1, characterized in that, The strip has several assembly windows arranged in a linear pattern, and each assembly window has a plurality of terminal structures symmetrically arranged therein.

3. The terminal assembly as claimed in claim 1, characterized in that, The ear portion includes a first body and a first snap fastener disposed on the first body. The first body is integrally connected to the end of the pin portion away from the cut portion, and the first snap fastener is bent toward the lead wire of the coil for pressing and fixing the lead wire of the coil.

4. The terminal assembly as claimed in claim 3, characterized in that, The first buckle body is configured in an I-shape, L-shape, C-shape or U-shape.

5. The terminal assembly as claimed in claim 1, characterized in that, The pin portion includes an integrally formed bent body and a patch body. The bent body is integrally connected to the ear portion, and the patch body is integrally connected to the cutting portion. The bent body is used to bend relative to the ear portion, and the patch body is used to attach to the end face of the housing of the magnetic device as an external pin.

6. The terminal assembly as claimed in claim 1, characterized in that, The cutting part includes a second main body and a second snap fastener disposed on the second main body. The second main body is integrally connected to the end of the pin portion opposite to the ear portion, and the second snap fastener is used to assist in fixing the lead wire of the coil.

7. The terminal assembly as claimed in claim 6, characterized in that, The second buckle body is configured in a C-shape or U-shape.

8. The terminal assembly as claimed in claim 1, characterized in that, A first marking groove is provided at the connection between the cutting part and the pin part for cutting and separating the material strip and the terminal structure, and / or, a second marking groove is provided at the connection between the ear part and the pin part for bending the pin part relative to the ear part.

9. A magnetic device, characterized in that, include: Housing, coil, and terminal structure as described in any one of claims 1 to 8; At least one of the coils is disposed in the receiving cavity of the housing, and a plurality of functional slots are recessed on the bottom surface of the housing. The ear portion of the terminal structure is correspondingly connected to the functional slots. Each lead of the coil is correspondingly electrically connected to the ear portion, and the pin portion of the terminal structure is attached to the bottom end face of the housing.

10. An electronic device, characterized in that, Including the magnetic device as described in claim 9.

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