Reliably connected network transformer

Abstract

The utility model relates to the technical field of magnetic devices, and discloses a reliably-connected network transformer which comprises a plastic shell, a magnetic core assembly arranged in the plastic shell and a plurality of first connecting arms connected to the outer wall of the plastic shell, and the magnetic core assembly is electrically connected with the first connecting arms; a plurality of external supporting legs corresponding to the first connecting arms are arranged at one end of the plastic shell, and the external supporting legs and the first connecting arms extend out of the plastic shell in the first direction; a plurality of second connecting arms corresponding to the first connecting arms are further arranged at one end of the plastic shell, and the second connecting arms are attached to the sides, away from the plastic shell, of the external supporting legs and protrude out of the external supporting legs in the first direction. The sides, away from the plastic shell, of the external supporting legs are arranged in a plane mode, and the sides, away from the plastic shell, of the second connecting arms are located on the same plane. The structural connection reliability of the network transformer is improved.

Description

Technical Field

[0001] This application relates to the field of magnetic device technology, and more specifically to a network transformer with reliable connection. Background Technology

[0002] Network transformers, also known as network isolation transformers, are important components widely used in network interfaces. They are mainly used to achieve data transmission and voltage isolation, playing a key role in communication, automotive, and network equipment. They can effectively ensure signal integrity, suppress noise interference, and ensure electrical isolation between devices. However, existing network isolation transformers still have some problems in structural design and application. For example, the pins or connection terminals of existing network isolation transformers are usually connected to the external circuit by soldering. Due to the lack of support and positioning design, misalignment or poor connection can easily occur during the soldering process, affecting mechanical stability and electrical performance. They are particularly prone to failure under long-term operation or vibration environment. This situation needs to be changed. Utility Model Content

[0003] In view of this, this application provides a network transformer with reliable connection to solve the aforementioned technical problems.

[0004] To achieve the above objectives, the technical solution adopted is as follows:

[0005] A reliable network transformer includes:

[0006] A plastic housing, a magnetic core assembly disposed within the plastic housing, and a plurality of first connecting arms connected to the outer wall of the plastic housing, wherein the magnetic core assembly is electrically connected to the first connecting arms;

[0007] One end of the plastic shell is provided with a plurality of external support feet corresponding to the first connecting arm. The external support feet and the first connecting arm extend from the plastic shell along a first direction, wherein the first direction is a direction perpendicular to the outer wall of the plastic shell.

[0008] One end of the plastic shell is also provided with a plurality of second connecting arms corresponding to the first connecting arm. The second connecting arms are attached to the side of the external support foot away from the plastic shell and protrude from the external support foot in the first direction.

[0009] The external support foot is arranged in a plane on the side away from the plastic shell, and the sides of several second connecting arms away from the plastic shell are all located on the same plane.

[0010] This application is further configured such that: in a second direction, the first connecting arm, the second connecting arm, and the external support foot are evenly arranged on the outer wall of the plastic housing, wherein the second direction is perpendicular to the first direction.

[0011] This application is further configured such that: an isolation notch is provided between adjacent external support feet, and the isolation notch gradually expands in the first direction from the end closer to the plastic shell to the end farther away from the plastic shell.

[0012] This application further specifies that the magnetic core assembly includes a winding coil and at least one functional magnetic ring, the winding coil being wound on the functional magnetic ring, and the winding coil being electrically connected to the first connecting arm.

[0013] This application is further configured such that: lead wire connectors are led out from both sides of the winding coil, and the lead wire connectors are wound onto the first connecting arm through the isolation notch and welded to the first connecting arm for fixation.

[0014] This application further specifies that: the magnetic core assembly includes at least one auxiliary magnetic ring, the auxiliary magnetic ring is disposed in the plastic housing and arranged at intervals from the functional magnetic ring, and the winding coil is respectively wound on the functional magnetic ring and the auxiliary magnetic ring and has a plurality of lead wire connectors.

[0015] This application is further configured such that: in the third direction, the first connecting arm, the external support foot, and the second connecting arm are arranged sequentially and a first predetermined interval distance is maintained between the first connecting arm and the second connecting arm, wherein the third direction is perpendicular to the first direction and the second direction.

[0016] This application is further configured such that, in the third direction, there is a second predetermined interval distance between the vertical projections of the first connecting arm and the second connecting arm.

[0017] This application further specifies that: the external support foot includes an integrally connected fixing part and a guiding part, the fixing part is integrally injection molded with the plastic shell, and the guiding part protrudes from the plastic shell along the first direction.

[0018] This application further specifies that the cross-sectional profile of the first connecting arm is rectangular, and the cross-section of the first connecting arm has a designed size.

[0019] In summary, compared with the prior art, this application discloses a reliable network transformer, including a plastic shell, an external support foot, a first connecting arm, and a second connecting arm. The magnetic core assembly is disposed inside the plastic shell and electrically connected to the first connecting arm, which is connected to the outer wall of the plastic shell. The external support foot and the second connecting arm are located at one end of the plastic shell, with the second connecting arm attached to the side of the external support foot facing away from the plastic shell. The external support foot and the first connecting arm extend out of the plastic shell along a first direction. The second connecting arm protrudes from the external support foot in the first direction, and the side of the external support foot facing away from the plastic shell is planar. Several second connecting arms are located on the same plane on the side facing away from the plastic shell. Through this arrangement, supported by the external support foot, the second connecting arms are stably and firmly arranged relative to the first connecting arm and welded to the external environment, thereby improving the structural connection reliability of the network transformer. Attached Figure Description

[0020] 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.

[0021] Figure 1 This is a schematic diagram of the network transformer for reliable connection in this embodiment;

[0022] Figure 2 This is a schematic diagram of the structure of a network transformer with reliable connection from another perspective in this embodiment. Detailed Implementation

[0023] 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.

[0024] 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.

[0025] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] Please refer to Figure 1 and Figure 2 The reliable network transformer in this application embodiment includes a plastic housing 1, a magnetic core assembly 2, a first connecting arm 3, an external support foot 4, and a second connecting arm 5.

[0030] In the specific implementation process, the magnetic core assembly 2 is disposed inside the plastic shell 1, the first connecting arm 3 has several of them and is connected to the outer wall of the plastic shell 1, the magnetic core assembly 2 is electrically connected to the first connecting arm 3, and the external support foot 4 has several of them and is disposed at one end of the plastic shell 1 corresponding to the first connecting arm 3. The external support foot 4 and the first connecting arm 3 extend out of the plastic shell 1 along a first direction, wherein the first direction is a direction perpendicular to the outer wall of the plastic shell 1. At the same time, several second connecting arms 5 corresponding to the first connecting arm 3 are disposed at one end of the plastic shell 1 and are attached to the side of the external support foot 4 away from the plastic shell 1, and protrude from the external support foot 4 in the first direction.

[0031] Furthermore, the external support foot 4 is arranged in a plane on the side opposite to the plastic shell 1, and several second connecting arms 5 are all located on the same plane on the side opposite to the plastic shell 1.

[0032] In this embodiment, the second connecting arm 5 of the network transformer, supported by the external support foot 4, ensures structural stability when soldered to external circuits. The planar arrangement of the external support foot 4 on the side facing away from the plastic housing 1 ensures a tight fit between the second connecting arm 5 and the external support foot 4, preventing poor contact due to uneven surfaces. This ensures the soldering quality of the external support foot 4, especially in SMT (Surface Mount Technology) processes. Furthermore, it provides a high-precision foundation for the common surfaces of several second connecting arms 5, meaning that the sides of several second connecting arms 5 facing away from the plastic housing 1 are all located on the same plane. This planar design provides a consistent soldering height for the network transformer, improving mounting stability and ensuring that the second connecting arm 5 remains horizontal when soldered to external circuits. This reduces the risk of tilting during soldering, ensures the consistency of solder joints, and ultimately improves the structural connection reliability of the network transformer.

[0033] It should be noted that this embodiment constructs an XYZ spatial coordinate system, in order to... Figure 1 For example, the X-axis direction can be regarded as the first direction, the Y-axis direction as the second direction, and the Z-axis direction as the third direction. The first direction can also be regarded as the extension direction of the left and right sides of the plastic shell 1, that is, the direction perpendicular to the outer wall of the plastic shell 1. The second direction can also be regarded as the extension direction of the front and rear ends of the shell 1. The third direction can also be regarded as the extension direction of the upper and lower ends of the plastic shell 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.

[0034] In the specific implementation process, in the second direction, the first connecting arm 3, the second connecting arm 5 and the external support foot 4 are evenly arranged on the outer wall of the plastic shell 1. This design ensures that the structure of each part of the network transformer is neat and tidy, and also facilitates the automated winding and automated welding of the leads of the magnetic core assembly 2 and the first connecting arm 3. In addition, the evenly arranged first connecting arm 3 and second connecting arm 5 result in a more uniform heat distribution during welding or operation, reducing the risk of local heat concentration and extending the service life of the network transformer.

[0035] Furthermore, in the second direction, the first connecting arm 3 and the second connecting arm 5 can be linearly arranged on the outer wall of the plastic housing 1, and the linearly arranged first connecting arm 3 and the second connecting arm 5 are kept parallel to each other, so as to facilitate welding quality inspection by automatic optical inspection (AOI) equipment, screen out connecting arm breakage or poor solder joint detachment, and improve the structural connection reliability of the network transformer.

[0036] Furthermore, an isolation notch 6 is provided between adjacent external support feet 4. The isolation notch 6 gradually expands in the first direction from the end closer to the plastic shell 1 to the end farther away from the plastic shell 1. Thus, the isolation notch 6 creates a clear interval area between the external support feet 4 and between the second connecting arm 5 supported by the external support feet 4, so as to avoid contact or short circuit between adjacent connecting arms due to external vibration or deformation during use, and ensure the reliability of electrical insulation performance. At the same time, the isolation notch 6 can also play a limiting role. That is, the isolation notch 6 can guide the lead wire of the magnetic core assembly 2 to be electrically connected to the first connecting arm 3, thereby reducing the assembly difficulty of the network transformer and improving the efficiency and quality of welding. Meanwhile, the isolation notch 6 gradually expands in the first direction from the end closer to the plastic shell 1 to the end farther away from the plastic shell 1 to optimize the thermal flow environment of the external support feet 4, which helps the heat dissipation performance of the network isolation transformer under high load operation, reduces the risk of local overheating, and improves the structural connection reliability of the network transformer.

[0037] Optionally, the shape of the isolation notch 6 can be designed as a regular trapezoid, arc, or other gradually expanding structure to ensure high-precision manufacturing during machining and injection molding, while also taking into account good mechanical strength and electrical insulation performance.

[0038] It should be noted that the magnetic core assembly 2 includes a winding coil 21 and at least one functional magnetic ring 22. The winding coil 21 is wound on the functional magnetic ring 22, and the winding coil 21 is electrically connected to the first connecting arm 3. Furthermore, lead wire connectors 23 are led out from both sides of the winding coil 21. The lead wire connectors 23 are wound onto the first connecting arm 3 through the isolation notch 6 and welded to the first connecting arm 3. The design of the isolation notch 6 makes the wiring and connection process of the lead wire connectors 23 facing the first connecting arm 3 clearer and easier to operate, provides a precise positioning reference for the lead wire connectors 23, and improves assembly efficiency and consistency. That is, the isolation notch 6 guides the lead wire connectors 23 to a fixed path, avoiding the leads from tangling with each other or contacting other components, thereby reducing the risk of signal interference and improving the electrical performance of the network transformer.

[0039] In one embodiment, the magnetic core assembly 2 further includes at least one auxiliary magnetic ring (not shown). The auxiliary magnetic ring is disposed in the plastic housing 1 and is spaced apart from the functional magnetic ring 22. The winding coil 21 is wound on the functional magnetic ring 22 and the auxiliary magnetic ring respectively and has several lead wire connectors 23. According to the actual environmental requirements, the network transformer can also be provided with at least one auxiliary magnetic ring, which is arranged spaced apart from the functional magnetic ring 22 to form a multi-magnetic ring structure. The functional magnetic ring 22 may include a transformer magnetic ring and the auxiliary magnetic ring may include a common-mode magnetic ring. Thus, the network transformer performs voltage conversion through the functional magnetic ring 22 and signal filtering through the auxiliary magnetic ring, thereby improving the overall performance of the device.

[0040] In the specific implementation process, from the third-party perspective, the first connecting arm 3, the external support foot 4, and the second connecting arm 5 are arranged sequentially, and a first predetermined interval distance is maintained between the first connecting arm 3 and the second connecting arm 5 (e.g., Figure 2 As indicated by the mark at point A), based on the first set interval distance, the distance between the first connecting arm 3 and the second connecting arm 5 can be effectively constrained, ensuring the accuracy of the welding process of the first connecting arm 3 and the second connecting arm 5. At the same time, the first set interval distance can reduce the electromagnetic coupling effect between the first connecting arm 3 and the second connecting arm 5, reduce the influence of parasitic parameters, and thus improve the electrical performance stability of the network transformer.

[0041] Preferably, the first connecting arm 3 and the second connecting arm 5 are integrally connected in the side wall of the plastic housing 1, and the first connecting arm 3 and the second connecting arm 5 after integral connection have an overall C-shaped structure design, thereby maintaining a first set interval distance in structure, and the positions of the first connecting arm 3 and the second connecting arm 5 are fixed based on the setting of embedding in the plastic housing 1, ensuring that the second connecting arm 5 is accurately connected to the external circuit, avoiding assembly errors caused by loosening or offset during the welding process of traditional connecting pins. That is, the plastic housing 1 can provide stable support for the first connecting arm 3 and the second connecting arm 5 through the side wall, improving its vibration resistance performance, especially suitable for high vibration environments such as vehicle communication equipment.

[0042] Optionally, the numerical range of the first set interval distance includes 1.5mm to 4.1mm.

[0043] Preferably, the first set interval distance is 2mm.

[0044] In one embodiment, in a third-direction orientation, there is a second predetermined interval distance between the vertical projections of the first connecting arm 3 and the second connecting arm 5 (e.g., ...). Figure 2 As indicated by the mark at point B), it should be noted that the second set interval distance is a positive number greater than zero. That is to say, the first connecting arm 3 and the second connecting arm 5 are offset in the third direction. Based on this design of the second set interval distance, the first connecting arm 3 and the second connecting arm 5 form a clear spatial separation during the welding or winding process, avoiding overlap or visual interference. As a result, when the AOI inspection equipment inspects the welding quality of the first connecting arm 3, it can clearly distinguish the position and state of each first connecting arm 3, achieving 100% coverage and higher inspection accuracy.

[0045] Furthermore, the staggered arrangement of the first connecting arm 3 and the second connecting arm 5 provides sufficient space for welding operations, avoiding problems such as solder ball splashing or mutual interference of solder during the welding process, thereby reducing the occurrence of defects such as short circuits and cold solder joints and improving welding quality. At the same time, the second predetermined interval between the first connecting arm 3 and the second connecting arm 5 is conducive to optimizing the heat distribution design of the plastic shell 1 and reducing the heat concentration effect. Thus, the first connecting arm 3 and the second connecting arm 5 are more evenly distributed on the side of the plastic shell 1, and the mechanical stress distribution is more reasonable, thereby improving the structural connection reliability of the network transformer.

[0046] Optionally, the second set interval distance is ≥0.2mm.

[0047] In one embodiment, the external support foot 4 includes an integrally connected fixing part 41 and a guide part 42. The fixing part 41 is integrally injection molded with the plastic shell 1, and the guide part 42 protrudes from the plastic shell 1 in a first direction. The integral injection molding ensures a tight fit between the fixing part 41 and the plastic shell 1, avoiding gaps or detachment caused by secondary assembly. The second connecting arm 5 can be attached to the guide part 42 and protrudes from the guide part 42 in the first direction. Thus, the guide part 42 supports, guides, and attaches to the second connecting arm 5, ensuring the structural connection reliability of the network transformer.

[0048] In one embodiment, the cross-sectional profile of the first connecting arm 3 is rectangular, and the cross-section of the first connecting arm 3 has a designed size. By appropriately controlling this set size, it can be ensured that the lead connector 23 has sufficient contact area when it is welded to the outer surface of the first connecting arm 3, thereby forming a strong solder joint and effectively reducing the risk of poor soldering and solder detachment. A smaller set size can reduce the exposed area and avoid oxidation caused by the influence of the external environment, while a larger set size can facilitate full coverage of solder and enhance the welding strength.

[0049] It should be noted that during the process of winding the lead connector 23 to the first connecting arm 3, a cutting operation can be performed on the area of ​​the lead connector 23 that is not covered by the first connecting arm 3, thereby removing the unwound part of the first connecting arm 3 and exposing the cross section of the first connecting arm 3. This cross section can then be used as the exposed copper part of the first connecting arm 3 to inspect the soldering effect between the lead connector 23 and the first connecting arm 3, such as whether the solder joint is full and whether the solder is evenly distributed, in order to avoid defects such as cold solder joints or false solder joints, thereby improving the structural connection reliability of the network transformer.

[0050] 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 description of the above embodiments is 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.

Claims

1. A network transformer with reliable connection, characterized in that, include: A plastic housing, a magnetic core assembly disposed within the plastic housing, and a plurality of first connecting arms connected to the outer wall of the plastic housing, wherein the magnetic core assembly is electrically connected to the first connecting arms; One end of the plastic shell is provided with a plurality of external support feet corresponding to the first connecting arm. The external support feet and the first connecting arm extend from the plastic shell along a first direction, wherein the first direction is a direction perpendicular to the outer wall of the plastic shell. One end of the plastic shell is also provided with a plurality of second connecting arms corresponding to the first connecting arm. The second connecting arms are attached to the side of the external support foot away from the plastic shell and protrude from the external support foot in the first direction. The external support foot is arranged in a plane on the side away from the plastic shell, and the sides of several second connecting arms away from the plastic shell are all located on the same plane.

2. The network transformer with reliable connection as described in claim 1, characterized in that, In the second direction, the first connecting arm, the second connecting arm, and the external support foot are evenly arranged on the outer wall of the plastic housing, wherein the second direction is perpendicular to the first direction.

3. The network transformer with reliable connection as described in claim 1, characterized in that, An isolation notch is provided between adjacent external support feet, and the isolation notch gradually widens in the first direction from the end closer to the plastic shell to the end farther away from the plastic shell.

4. The network transformer with reliable connection as described in claim 3, characterized in that, The magnetic core assembly includes a winding coil and at least one functional magnetic ring, the winding coil being wound on the functional magnetic ring, and the winding coil being electrically connected to the first connecting arm.

5. The network transformer with reliable connection as described in claim 4, characterized in that, The winding coil has lead wire connectors on both sides, and the lead wire connectors are wound onto the first connecting arm through the isolation notch and welded to the first connecting arm.

6. The network transformer for reliable connection as described in claim 5, characterized in that, The magnetic core assembly also includes at least one auxiliary magnetic ring, which is disposed in the plastic housing and spaced apart from the functional magnetic ring. The winding coils are respectively wound on the functional magnetic ring and the auxiliary magnetic ring and have several lead wire connectors extending out.

7. The network transformer with reliable connection as described in claim 2, characterized in that, In the third direction, the first connecting arm, the external support foot, and the second connecting arm are arranged in sequence, and a first predetermined interval distance is maintained between the first connecting arm and the second connecting arm, wherein the third direction is perpendicular to the first direction and the second direction.

8. The network transformer with reliable connection as described in claim 7, characterized in that, In the third direction, there is a second predetermined interval distance between the vertical projections of the first connecting arm and the second connecting arm.

9. The network transformer with reliable connection as described in claim 1, characterized in that, The external support foot includes an integrally connected fixing part and a guiding part. The fixing part is integrally injection molded with the plastic shell, and the guiding part protrudes from the plastic shell along the first direction.

10. The network transformer for reliable connection as described in claim 7, characterized in that, The first connecting arm has a rectangular cross-sectional profile and the cross-section of the first connecting arm has a designed size.

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