Assembled network transformer and electronic equipment
By designing the housing, magnetic ring, and metal terminals of the assembled network transformer, the problems of copper wire fatigue breakage and thermal expansion of the three-proof coating are solved, achieving higher electrical performance and reliability, reducing production costs and complexity, and adapting to stability and miniaturization in harsh environments.
Patent Information
- Application Number
- CN202423106460.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-16
AI Technical Summary
Existing network transformers are prone to copper wire fatigue breakage and open circuit problems caused by thermal expansion of the conformal coating in harsh environments, and the production process is complex and costly.
The assembly design includes a housing, magnetic ring, metal terminals, and a fixing adhesive layer. The bending structure of the metal terminals and the housing, along with the sealing design of the fixing adhesive layer, improves connection reliability and sealing, and reduces damage to the winding coil leads caused by thermal expansion and vibration.
It improves the electrical performance and reliability of network transformers, reduces production costs and complexity, and meets the requirements for stability and miniaturization in harsh environments.
Smart Images
Figure CN223539427U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of magnetic device technology, specifically to an assembled network transformer and electronic device. Background Technology
[0002] Network transformers primarily function as data transmitters and voltage isolation devices at network interfaces. With continuous technological advancements and the booming development of new energy sources, network transformers increasingly prioritize high reliability, miniaturization, and low cost. However, many network transformer technologies suffer from the following shortcomings:
[0003] Transformer open circuit problems caused by copper wire fatigue breakage and breakage at the root of the winding wire include design deficiencies that cause wire breakage, such as a long path from the copper wire lead-out to the winding area, which makes it easy to bend and lead to copper wire fatigue breakage; and the fact that products often experience severe vibration in harsh working environments (frequent mechanical vibration and high and low temperature shocks, such as automotive and aviation environments), causing the copper wire to repeatedly scrape against the corners of the casing, resulting in poor wire hanging or even breakage.
[0004] Devices are typically coated with conformal coating to protect circuit boards from environmental corrosion. However, this coating often seeps into the transformer's interior along gaps in the structural design, covering the copper wire surface. At high temperatures, the increased thermal motion between molecules within the conformal coating leads to increased intermolecular distance and consequently, an increase in volume—a phenomenon known as thermal expansion. According to the formula for the coefficient of linear expansion of materials:
[0005]
[0006] Where α is the coefficient of linear thermal expansion, ΔL is the change in length, L0 is the initial length, and ΔT is the change in temperature. It can be seen that the greater the temperature change, the greater the deformation of the conformal coating. Drastic temperature changes will cause the conformal coating to deform, causing the copper wire it covers to experience necking, that is, the weak section of the copper wire shrinks rapidly, leading to fatigue cracking of the copper wire, and finally wire breakage, causing the transformer to open circuit malfunction. Utility Model Content
[0007] In view of this, this application provides an assembled network transformer and electronic device to solve the aforementioned technical problems.
[0008] To achieve the above objectives, based on the first aspect, the technical solution adopted is as follows:
[0009] An assembled network transformer, comprising:
[0010] The housing has a receiving cavity with an opening at the lower end, and a plurality of first functional grooves are recessed on the lower end surface of the housing.
[0011] At least one first magnetic ring is disposed in the accommodating cavity, and a winding coil is wound on the first magnetic ring, the winding coil having a plurality of lead connectors extending out.
[0012] Metal terminals, a plurality of said metal terminals are arranged at the lower end of said housing, each said metal terminal is inserted into each of the first functional slots, said metal terminals are provided with wire clamping lugs, said wire clamping lugs are bent and pressed into the lead connector in the first functional slots and electrically connected to the lead connector;
[0013] A fixing adhesive layer that matches the first functional groove, and the fixing adhesive layer filling the first functional groove and covering the wire clamping lug and the lead connector.
[0014] This application further specifies that: the metal terminal includes a first bent portion integrally connected to the wire clamping lug, the first bent portion being bent relative to the wire clamping lug along a first direction and then attached to the outer wall of the housing and the fixing adhesive layer, wherein the first direction is the extension direction of the upper and lower ends of the housing.
[0015] This application further specifies that: the metal terminal includes a second bent portion integrally connected to the first bent portion, the second bent portion being bent relative to the first bent portion along a second direction and attached to the lower end surface of the housing and the fixing adhesive layer, for use as a patch pin for electrical connection with an external device, wherein the second direction is perpendicular to the first direction.
[0016] This application further specifies that: the metal terminal includes a connecting portion that connects the first bent portion and the wire clamping ear respectively, and the connecting portion is snapped into the bottom of the first functional slot.
[0017] This application is further configured such that: a second functional groove is formed by recessing a portion of the sidewall of the first functional groove, and a portion of the pressure wire ear is disposed within the second functional groove.
[0018] This application is further configured such that: a locking block is formed on a portion of the sidewall of the first functional groove, the locking block abuts against the connecting portion and extends to the space between the first bent portion and the pressure wire ear.
[0019] This application is further configured to include an adhesive layer, which is disposed in the accommodating cavity and respectively connects the first magnetic ring, the winding coil and the inner wall of the housing.
[0020] This application is further configured such that: after the lead wire connector is led out from the winding coil, it is electrically connected to the pressure coil lug in a straight line along the second direction by soldering, wave soldering or laser soldering.
[0021] This application is further configured such that: the first functional slot gradually expands from the upper end of the housing toward the lower end of the housing, and the lead connector on the first functional slot maintains a set distance from the sidewall of the fixing adhesive layer.
[0022] According to the second aspect, the technical solution adopted is as follows:
[0023] An electronic device includes an assembled network transformer as described in any of the above embodiments.
[0024] In summary, compared with the prior art, this application discloses an assembled network transformer and electronic device. The assembled network transformer includes a housing, at least one first magnetic ring, metal terminals, and a fixing adhesive layer. The first magnetic ring is disposed in a receiving cavity and wound with a winding coil. The winding coil has several lead wire connectors. Each metal terminal is correspondingly inserted into a first functional slot of each housing. The metal terminal has a wire clamping lug. The wire clamping lug is bent and clamped in the first functional slot and electrically connected to the lead wire connector. The fixing adhesive layer matches the first functional slot and fills the first functional slot, covering the wire clamping lug and the lead wire connector. That is, through the above configuration, the sealing performance of the metal terminal and the lead wire connector relative to the housing is improved, the local damage to the winding coil lead wire due to thermal expansion or vibration is reduced, and the electrical performance and reliability of the network transformer are improved. Attached Figure Description
[0025] 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.
[0026] Figure 1 This is a three-dimensional structural schematic diagram of the assembled network transformer of this application;
[0027] Figure 2 This is an exploded view of the assembled network transformer of this application;
[0028] Figure 3 This is a three-dimensional structural diagram of the metal terminal of this application;
[0029] Figure 4 This is a structural diagram of the mating structure of the metal terminal and the first functional slot according to the first type of this application;
[0030] Figure 5 This is a diagram showing the mating structure of the metal terminal and the first functional slot in the second type of this application. Detailed Implementation
[0031] 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 numerals in different drawings denote 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 appended claims.
[0032] 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.
[0033] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.
[0034] 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.
[0035] 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.
[0036] 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.
[0037] Please refer to Figures 1 to 5 The assembled network transformer of this application includes a housing 1, at least one first magnetic ring 3, a metal terminal 5, and a fixing adhesive layer 7.
[0038] In the specific implementation process, the housing 1 has a receiving cavity 2 with an opening at the lower end, and a plurality of first functional slots 11 are recessed on the lower surface of the housing 1. A first magnetic ring 3 is disposed in the receiving cavity 2, and a winding coil 4 is wound on the first magnetic ring 3. A plurality of lead wire connectors 41 are led out from the winding coil 4. A plurality of metal terminals 5 are arranged at the lower end of the housing 1. Each metal terminal 5 is inserted into each first functional slot 11. The metal terminal 5 is provided with a wire clamping ear 6. The wire clamping ear 6 is bent and clamped in the first functional slot 11 and electrically connected to the lead wire connector 41. The fixing adhesive layer 7 matches the first functional slot 11, and the fixing adhesive layer 7 fills the first functional slot 11 and covers the wire clamping ear 6 and the lead wire connector 41.
[0039] The assembled network transformer of this application features a housing 1 with an open lower end cavity 2, facilitating the rapid positioning and assembly of the first magnetic ring 3 and the winding coil 4. The metal terminal 5 is directly bent and pressed against the lead connector 41 via the wire clamping lug 6, achieving a stable electrical connection with the lead connector 41. This avoids the multi-step operations of welding or complex clamping methods in traditional processes, improving assembly efficiency and connection reliability. The fixing adhesive layer 7 fills the first functional groove 11 and covers the wire clamping lug 6 and the lead connector 41, effectively enhancing the overall stability of the connection and preventing loosening or wire breakage due to mechanical vibration or impact. Furthermore, the matching design of the fixing adhesive layer 7 reduces the distance between the lead connector 41 and the housing 1. The relative movement between them further improves the stability of the network transformer in harsh environments (such as high vibration or large temperature changes). The first functional slot 11, the wire clamping lug 6 and the fixing adhesive layer 7 form a modular connection structure, which does not require complex embedding molds and precision machining, reducing mold costs and material costs. The fixing adhesive layer 7 covers the wire clamping lug 6 and the lead connector 41, which can effectively isolate the intrusion of the external environment (such as moisture, corrosive gases or pollutants), and extend the service life of the leads and metal terminals. That is, through the fixing and stress dispersion effect of the fixing adhesive layer 7, the local damage to the winding coil 4 leads caused by thermal expansion or vibration is reduced, thereby improving the electrical performance and reliability of the network transformer.
[0040] Furthermore, the fixing adhesive layer 7 fills the first functional groove 11 and covers the wire clamping lug 6 and lead connector 41, forming an effective sealing barrier. This prevents the conformal coating from penetrating into the network transformer during the coating process. Consequently, it avoids the conformal coating covering the lead surface of the winding coil 4, preventing the thermal motion between molecules inside the conformal coating from increasing at high temperatures, which would lead to an increase in the distance between molecules and thus an increase in volume, i.e., thermal expansion. This would cause the conformal coating to deform due to drastic temperature changes, resulting in necking of the lead it covers. In other words, the weak section of the lead shrinks rapidly, leading to fatigue cracking of the lead and ultimately breakage, causing potential open circuit defects in the transformer.
[0041] The sealing design of the aforementioned fixing adhesive layer 7 prevents the conformal coating from contaminating the internal magnetic ring, coil, and lead connectors of the network transformer, thus avoiding any impact on the coil insulation and electrical performance. Furthermore, the use of the fixing adhesive layer 7 completely covers key components such as the metal terminal 5 and the wire clamp lug 6, reducing the complex operation of additional shielding or protection required during conformal coating, thereby improving the efficiency of the production line. In other words, the sealing effect of the fixing adhesive layer 7 isolates the internal structure of the assembled network transformer from the outside world, ensuring that the conformal coating is only applied to the predetermined outer shell surface, avoiding uneven coating caused by leakage, and further improving the consistency of product appearance and function.
[0042] It is understood that multiple first magnetic rings 3 can be provided in this application. Multiple first magnetic rings 3 can be stacked in the accommodating cavity 2 or arranged at intervals in the accommodating cavity 2. The winding coil 4 is wound on each first magnetic ring 3 so as to adjust the specific performance and function of the assembled network transformer according to environmental requirements.
[0043] In one embodiment, the metal terminal 5 includes a first bent portion 51 integrally connected to the wire clamping lug 6. The first bent portion 51 is bent relative to the wire clamping lug 6 in a first direction and then attached to the outer wall of the housing 1 and the fixing adhesive layer 7.
[0044] It should be noted that this embodiment constructs an XYZ spatial coordinate system, in order to... Figure 1 For example, the Z-axis direction can be regarded as the first direction, the X-axis direction as the second direction, and the Y-axis direction as the third direction. The first direction can also be regarded as the extension direction of the upper and lower ends of the housing 1, that is, the direction perpendicular to the end face of the upper and lower ends of the housing 1. The second direction can also be regarded as the extension direction of the left and right sides of the housing 1. The third direction can also be regarded as the extension direction of the front and rear ends of the housing 1. Of course, this embodiment is not limited to this. XYZ can also be any other direction that is perpendicular to each other in space in actual needs, which will not be elaborated here.
[0045] The design of the first bending portion 51 ensures that the metal terminal 5 fits snugly against the outer wall of the housing 1 and the fixing adhesive layer 7, making the metal terminal 5 more securely fixed. This reduces the risk of loosening or poor electrical contact caused by external forces, vibrations, or thermal expansion and contraction, thereby improving the reliability and durability of the connection. Specifically, after bending, the first bending portion 51 fits snugly against the outer wall of the housing 1 and the fixing adhesive layer 7, forming a multi-point support structure. This disperses the stress acting on the metal terminal 5 to a larger contact surface, thereby reducing the potential damage to the wire clamping lug 6 or lead connector 41 caused by single-point stress concentration, and extending the product's service life. After the first bending portion 51 fits snugly against the fixing adhesive layer 7, it forms a tight bond with the outer wall of the housing 1, effectively preventing the metal terminal 5 from loosening during use. While displacement or loosening occurs during the process, the overall sealing of the device is improved, preventing external dust, moisture, or corrosive substances from seeping into the network transformer and protecting the internal structure. It is understandable that the first bending part 51 is integrally connected with the wire clamping lug 6, reducing the processing and assembly steps of additional parts, reducing manufacturing costs, and the bending structure can be fully bonded and fixed by automated equipment in one go, improving production efficiency and reducing the complexity of manual intervention. On the other hand, after the first bending part 51 is bonded to the fixing adhesive layer 7, the contact area between the adhesive layer and the terminal is increased, improving the adhesion strength of the fixing adhesive layer 7. That is, the covering effect of the fixing adhesive layer 7 is more uniform and firm, further improving the fixation of the metal terminal 5 and the reliability of electrical contact.
[0046] Preferably, the first bending portion 51 is integrally formed with the pressure-line wrapping ear 6.
[0047] Optionally, the first bend 51 is parallel to the side of the housing 1.
[0048] In one embodiment, the metal terminal 5 includes a second bent portion 52 integrally connected to the first bent portion 51. The second bent portion 52 is bent relative to the first bent portion 51 along a second direction and adheres to the lower end surface of the housing 1 and the fixing adhesive layer 7, for use as a patch pin for electrical connection with an external device, wherein the second direction is perpendicular to the first direction.
[0049] The design of the second bending portion 52, which bends along the second direction (perpendicular to the first direction) and adheres to the lower end surface of the housing 1 and the fixing adhesive layer 7, provides a smooth and reliable surface mount pin structure. The fitting design ensures that the second bending portion 52 has a larger contact surface and stable support during soldering, thereby improving soldering quality and conductivity. The surface mount design of the second bending portion 52 provides a flat and standardized soldering area, making it easy to operate during soldering and resulting in higher solder joint reliability. It is particularly suitable for automated soldering equipment and can significantly improve the accuracy and consistency of surface mount soldering.
[0050] Meanwhile, the second bend 52 adheres to the lower surface of the housing 1 and the fixing adhesive layer 7, forming a multi-point support structure. This disperses external forces over a larger area, effectively preventing the surface mount pins from loosening, desoldering, or being damaged due to mechanical vibration or external impact, thus improving the overall structural stability. Furthermore, the second bend 52 adheres to the fixing adhesive layer 7, further increasing the adhesive layer's adhesion area and enhancing the fixing effect. After the fixing adhesive layer 7 covers the second bend 52, it prevents external moisture, dust, or corrosive substances from penetrating into the electrical connection area, extending the product's lifespan. The second bend 52 bends vertically relative to the first bend 51, utilizing the lower surface of the housing 1 as the bearing area for the surface mount pins. This avoids excessive extension of the metal terminal 5 or its occupation of internal space, thus not affecting the internal space of the network transformer cavity or restricting the selection of the winding coil 4. This ensures the miniaturization optimization of the assembled network transformer, meaning the compact layout makes the network transformer suitable for applications with limited space, such as miniaturized electronic devices.
[0051] Furthermore, the second bending portion 52 is integrally connected with the first bending portion 51, which reduces the number of independent parts, simplifies the manufacturing and assembly process, facilitates mass production through automated equipment, improves production efficiency, and reduces manufacturing costs.
[0052] On the other hand, the wire clamping lug 6, the first bending portion 51 and the second bending portion 52 of the metal terminal 5 of this application are directly attached to the outer wall of the housing 1 and the fixing adhesive layer 7 in the first functional groove 11, without the need to embed the terminal into the plastic structure. This eliminates the complex structural requirements for terminal positioning and fixing in the mold, and eliminates the need for complex multi-cavity or multi-step injection molding design, reducing the number of trial moldings and design iteration costs, lowering mold development costs, and significantly improving production efficiency.
[0053] In one embodiment, the metal terminal 5 includes a connecting portion 53 that connects the first bent portion 51 and the wire clamping lug 6 respectively. The connecting portion 53 is snapped into the bottom of the first functional slot 11, thus forming a multi-point fixing structure. That is, the wire clamping lug 6 is connected to the lead connector 41 of the winding coil 4, the first bent portion 51 is attached to the outer wall of the housing 1 or the fixing adhesive layer 7, and the connecting portion 53 is mechanically locked to the bottom of the first functional slot 11 by snapping, which realizes additional support for the metal terminal 5, prevents the terminal from loosening due to vibration or stress during long-term use, improves the fixing stability and shock resistance of the terminal, and the connecting portion 53 is fixed to the bottom of the first functional slot 11 by snapping, which can effectively limit the displacement of the metal terminal 5. For example, the snapping prevents the metal terminal 5 from being pulled out or pushed during installation, and limits the metal terminal 5 from swaying or sliding left and right. The connecting portion 53 also simplifies the terminal installation process, eliminates the need for additional fixing procedures, reduces the device installation steps and time, and improves assembly efficiency.
[0054] In one embodiment, continue to combine Figure 5 A second functional groove 12 is formed by recessing part of the side wall of the first functional groove 11. Part of the wire clamping ear 6 is disposed in the second functional groove 12. The position of the wire clamping ear 6 is further fixed by the limiting effect of the second functional groove 12. That is, the wire clamping ear 6 is not only supported by the bottom of the first functional groove 11, but also fixed in three dimensions by the limiting effect of the side wall of the second functional groove 12. This prevents the wire clamping ear 6 from sliding laterally or longitudinally due to external force or vibration, and ensures its long-term stability. At the same time, the second functional groove 12 can also provide bending and pressing deformation space for the wire clamping ear 6, ensuring that the wire clamping ear 6 can be bent and pressed more fully, so that the contact surface between the lead connector 41 and the wire clamping ear is more closely fitted, reducing contact resistance and improving the firmness and conductivity of the electrical connection.
[0055] Furthermore, during the assembly of the metal terminal 5 and the housing 1, the second functional slot 12 provides a clear positioning space for the wire clamping ear 6. The automated equipment only needs to insert the wire clamping ear into the first functional slot 11 and partially embed it into the second functional slot 12 without adjustment, ensuring a high-precision installation effect, reducing possible misalignment and rework during assembly, and improving production efficiency. After the wire clamping ear 6 is partially configured in the second functional slot 12, the wire clamping ear 6 forms a more complex structural interface with the first functional slot 11 and the second functional slot 12. The fixing adhesive layer 7 can more fully fill the functional slot, covering the wire clamping ear 6, while sealing its contact points with the first functional slot 11 and the second functional slot 12, thereby reducing possible gaps in the fixing adhesive layer 7, improving the sealing performance of the adhesive layer, and enhancing the stability and protection capability of the metal terminal 5 structure.
[0056] Meanwhile, the second functional slot 12 can restrict the degree of freedom of movement of the wire clamp 6, especially near the bend, to prevent the wire clamp 6 from lifting or falling off due to external forces during installation or operation, ensuring that the wire clamp 6 always remains in a close fit within the slot, avoiding the risk of loosening of the lead connector 41. In addition, the second functional slot 12 provides additional mechanical support points, that is, the vibration energy of the wire clamp 6 can be dispersed by the slot wall of the second functional slot 12, avoiding fatigue damage caused by single-point force, which is suitable for long-term high-frequency working scenarios and improves the vibration resistance and fatigue resistance of the network transformer.
[0057] In one embodiment, continue to combine Figure 4A locking block 13 is formed on a portion of the side wall of the first functional slot 11. The locking block 13 abuts against the connecting part 53 and extends between the first bent part 51 and the wire clamping ear 6. The locking block 13 provides an additional fixed support point, reducing the shaking or loosening of the connecting part 53 in the first functional slot 11, enhancing the positioning accuracy and stability of the metal terminal 5, and reducing the problem of loosening or displacement of the metal terminal 5 due to vibration or external force during long-term use. The locking block 13 extends between the first bent part 51 and the wire clamping ear 6 to fix the relative position between the connecting part 53, the first bent part 51 and the wire clamping ear 6, improving the assembly accuracy. In addition, during external vibration, transportation or use, the locking block 13 can also effectively limit the shaking and deformation of the metal terminal 5, improve the shock resistance of the overall transformer structure, and adapt to harsh operating environments.
[0058] It should be noted that the assembled network transformer of this application also includes an adhesive layer 8. The adhesive layer 8 is disposed in the accommodating cavity 2 and connects the first magnetic ring 3, the winding coil 4, and the inner wall of the housing 1. That is, the adhesive layer 8 connects the first magnetic ring 3, the winding coil 4, and the inner wall of the housing 1 together, enhancing the overall structural stability between the components and reducing the risk of loosening or misalignment of the components due to vibration, external force, or temperature changes during use. At the same time, the adhesive layer 8 acts as a buffer, effectively absorbing the force transmitted from external vibration or impact to the internal components of the transformer. Therefore, the elastic properties of the adhesive layer 8... This reduces the impact of external vibrations on the magnetic ring and coil, improves the stability of the network transformer in harsh environments, and the adhesive layer 8, as an insulating layer, can effectively prevent electrical faults such as current leakage and short circuits, thus improving the electrical insulation of the network transformer. The adhesive layer 8 can fill the accommodating cavity 2, effectively preventing external moisture, dust, or other contaminants from entering the network transformer, ensuring the normal operation of the network transformer in various harsh environments. The adhesive layer 8 filling the accommodating cavity 2 can optimize the utilization of internal space, improve the compactness and integration of the product, and is suitable for miniaturized and highly integrated network transformer designs.
[0059] The adhesive layer 8 helps to evenly distribute the heat inside the network transformer, avoid local overheating, and help maintain the temperature stability of the network transformer. In other words, the adhesive layer 8 can help to effectively conduct and dissipate heat, preventing overheating from damaging the device. Of course, the adhesive layer 8 has strong adaptability and can select different types of adhesives according to different materials and design requirements to meet various performance needs.
[0060] In the specific implementation process, after the lead wire connector 41 is led out from the winding coil 4, it is electrically connected to the pressure ear 6 in a straight line along the second direction by soldering, wave soldering or laser welding. This makes the electrical connection simpler and more intuitive, avoiding unnecessary bends or complex path designs. This avoids the risk of the lead wire breaking due to repeated scraping in the corner area of the housing 1. In other words, the straight path makes the welding process between the lead wire connector 41 and the pressure ear 6 more standardized, reducing connection problems caused by non-standard lead wire shapes, thereby improving the reliability and stability of the entire network transformer.
[0061] When making electrical connections using soldering, wave soldering, or laser soldering, straight lead paths ensure easier contact at the solder joints and guarantee solder quality, improving the stability and durability of the solder joints. In other words, during long-term use, straight leads help maintain the stability of the solder joints and avoid connection failures caused by mechanical vibration or environmental changes. At the same time, since the lead connector 41 is led out straight along the second direction, unnecessary lead bending can be avoided, occupying less space and thus improving the compactness of the network transformer design. Furthermore, the optimized lead path makes the layout of other components and parts more reasonable, further improving the integration and overall performance of the equipment.
[0062] The solder joint formed between the lead connector 41 and the wire clamp 6 within the first functional slot 11 is wrapped with a fixing adhesive layer 7. This prevents the solder joint from loosening or falling off due to vibration or mechanical impact during use, thus maintaining the welding quality and preventing poor electrical contact caused by solder joint detachment. Simultaneously, the fixing adhesive layer 7 helps reduce stress fatigue caused by vibration, temperature changes, and other factors at the solder joint, extending the service life of the welded connection. Furthermore, the fixing adhesive layer 7 acts as a buffer, absorbing potential external vibrations, reducing mechanical stress concentration at the solder joint, and improving the fatigue resistance of the welded joint. It also prevents external environmental contaminants such as moisture and dust from entering the solder joint, reducing electrical faults caused by external factors and 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.
[0063] In one embodiment, the first functional slot 11 gradually expands from the upper end of the housing 1 toward the lower end of the housing 1, and the lead connector 41 on the first functional slot 11 maintains a set distance from the side wall of the fixing adhesive layer 7. The gradually expanding design of the first functional slot 11 makes it easier to install the lead connector 41 when inserting the wire clamping lug 6. As the slot gradually expands downward, it allows the lead connector 41 to obtain a wider space during installation, reducing the resistance during installation, improving assembly efficiency, and facilitating the placement of the fixing adhesive layer 7 in the first functional slot 11. Maintaining a set distance between the lead connector 41 and the side wall of the fixing adhesive layer 7 can avoid direct contact between the lead connector 41 and the folded edge of the housing 1 at the first functional slot 11, thereby preventing the risk of poor wire hanging or wire breakage caused by repeated scraping between the lead connector 41 and the housing 1.
[0064] Optionally, the set distance between the lead connector 41 and the sidewall of the fixing adhesive layer 7 is >0.2mm.
[0065] In one embodiment, the assembled network transformer further includes at least one second magnetic ring (not shown). The second magnetic ring can be configured in the accommodating cavity 2 of the housing 1 and arranged at intervals from the first magnetic ring 3. The winding coil 4 is wound on the first magnetic ring 3 and the second magnetic ring respectively and has several lead wire connectors 41. According to the actual environmental requirements, the assembled network transformer forms a multi-magnetic ring structure through the first magnetic ring 3 and the second magnetic ring. For example, the first magnetic ring 3 may include a transformer magnetic ring and the second magnetic ring may include a common-mode magnetic ring. Thus, the network transformer performs voltage conversion through the first magnetic ring 3 and signal filtering through the second magnetic ring, thereby improving the overall performance of the device.
[0066] This application also discloses an electronic device, including an assembled network transformer 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 assembled network transformer in the above embodiment, which will not be repeated here.
[0067] The assembled network transformer 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 emphases. Parts not described in detail or in a certain embodiment can be referred to the relevant descriptions of other embodiments.
[0068] 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. An assembled network transformer, characterized in that, include: The housing has a receiving cavity with an opening at the lower end, and a plurality of first functional grooves are recessed on the lower end surface of the housing. At least one first magnetic ring is disposed in the accommodating cavity, and a winding coil is wound on the first magnetic ring, the winding coil having a plurality of lead connectors extending out. Metal terminals, a plurality of said metal terminals are arranged at the lower end of said housing, each said metal terminal is inserted into each of the first functional slots, said metal terminals are provided with wire clamping lugs, said wire clamping lugs are bent and pressed into the lead connector in the first functional slots and electrically connected to the lead connector; A fixing adhesive layer that matches the first functional groove, and the fixing adhesive layer filling the first functional groove and covering the wire clamping lug and the lead connector.
2. The assembled network transformer as described in claim 1, characterized in that, The metal terminal includes a first bent portion integrally connected to the wire clamping lug. The first bent portion is bent relative to the wire clamping lug along a first direction and then attached to the outer wall of the housing and the fixing adhesive layer, wherein the first direction is the extension direction of the upper and lower ends of the housing.
3. The assembled network transformer as described in claim 2, characterized in that, The metal terminal includes a second bent portion integrally connected to the first bent portion. The second bent portion is bent relative to the first bent portion along a second direction and adheres to the lower end surface of the housing and the fixing adhesive layer, serving as a patch pin for electrical connection with an external device, wherein the second direction is perpendicular to the first direction.
4. The assembled network transformer as described in claim 2, characterized in that, The metal terminal includes a connecting part that connects the first bent part and the wire clamping lug respectively, and the connecting part is snapped into the bottom of the first functional slot.
5. The assembled network transformer as described in claim 4, characterized in that, A second functional groove is formed by recessing part of the sidewall of the first functional groove, and part of the pressure wire wrap ear is disposed in the second functional groove.
6. The assembled network transformer as described in claim 4, characterized in that, A locking block is formed on a portion of the sidewall of the first functional slot. The locking block abuts against the connecting portion and extends to the space between the first bent portion and the pressure wire ear.
7. The assembled network transformer as described in claim 1, characterized in that, It also includes an adhesive layer, which is disposed in the accommodating cavity and is respectively connected to the first magnetic ring, the winding coil and the inner wall of the housing.
8. The assembled network transformer as described in claim 3, characterized in that, After the lead wire is led out from the winding coil, it is electrically connected to the pressure coil lug in a straight line along the second direction by soldering, wave soldering or laser soldering.
9. The assembled network transformer as described in claim 1, characterized in that, The first functional slot gradually expands from the upper end of the housing toward the lower end of the housing, and the lead connector on the first functional slot maintains a set distance from the sidewall of the fixing adhesive layer.
10. An electronic device, characterized in that, Including the assembled network transformer as described in any one of claims 1 to 9.