Integrated transformer combined type network port filtering assembly
By integrating the common-mode inductor and the chip transformer into a single device, the problem of high production and management costs of separate network filters is solved, enabling efficient winding and surface mounting, reducing production costs and meeting high-voltage isolation requirements.
Patent Information
- Application Number
- CN202422105842.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-08-28
AI Technical Summary
Existing discrete network filter solutions require two components to be combined, resulting in high production and management costs and hindering automated production.
By designing a common-mode inductor and a chip transformer into an integrated device, and employing a special structure of magnetic core and winding assembly, the integration of the common-mode inductor and chip transformer is achieved, simplifying the winding and surface mounting process.
It improves winding and surface mount efficiency, saves material and device footprint, reduces production costs, meets high voltage isolation requirements, and is compatible with various circuit modes.
Smart Images
Figure CN223539412U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of network port filter technology, specifically to an integrated transformer combined network port filter component. Background Technology
[0002] With the development of communication technology, ordinary users' home networks have entered the era of gigabit or even 10-gigabit Ethernet. After fiber optic cables are installed in the home, the distribution of the internal network is generally completed through devices such as optical modems, routers, and switches. These devices are equipped with network interfaces because wired network ports (also known as network interfaces) are essential interfaces for wired network transmission between these devices.
[0003] Between the wired network port and the chip, there is a filtering circuit. This circuit requires a network port filter, which provides signal coupling, impedance matching, and electromagnetic interference suppression. In recent years, the industry has gradually developed discrete network port filters, where the various components are broken down into several inductor devices. This approach facilitates fully automated production. However, with the application of these devices in production, the inventors discovered that current discrete inductor and capacitor solutions require two devices to combine for each winding. A single network port needs to be split into eight devices on the board, and customers also need to order two devices simultaneously, which is detrimental to production planning. This incurs material, production, and management costs for both the production and customer ends. Utility Model Content
[0004] To overcome the shortcomings of the existing technology, this utility model provides an integrated transformer-combined network filter assembly, which combines two independent components—a common-mode inductor and a chip transformer—into a single device. This improves winding and surface mount efficiency, saves materials, and reduces the device's footprint. Furthermore, the overall structure is simple and easy to manufacture.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] An integrated transformer combined network filter component includes a magnetic core and a winding assembly wound on the magnetic core. The magnetic core includes a sheet magnetic core and an E-shaped magnetic core. The sheet magnetic core is disposed on the upper part of the E-shaped magnetic core, and the two form a closed magnetic circuit.
[0007] The E-shaped magnetic core includes three baffles and three winding sections. Each of the three baffles is provided with multiple solder pads. The winding section includes multiple coils. Both ends of each coil are provided with solder sections, which are fixedly connected to the corresponding solder pads.
[0008] The coils of the winding assembly are wound on the three winding sections of the E-shaped magnetic core in various winding methods.
[0009] As a further implementation, the three winding sections are respectively a first winding section, a second winding section, and a third winding section.
[0010] As a further implementation, a first retaining wall and a second retaining wall are provided on both sides of the first winding portion, and a second retaining wall and a third retaining wall are provided on both sides of the second winding portion, with the third winding portion located on the second retaining wall.
[0011] As a further implementation, the first and third retaining walls each have two pads, and the second retaining wall has six pads.
[0012] As a further implementation, the two pads on the first barrier wall are the first pad and the second pad, the six pads on the second barrier wall are the third pad, the fourth pad, the fifth pad, the sixth pad, the seventh pad and the eighth pad, and the two pads on the third barrier wall are the ninth pad and the tenth pad.
[0013] As a further implementation, the first coil of the winding assembly is wound on the first winding section, and the welding parts at its beginning and end are fixed on the first solder pad and the third solder pad, respectively.
[0014] The second coil of the winding assembly is wound on the first winding section, and the welding parts at its beginning and end are fixed on the second and fourth welding pads, respectively.
[0015] The third coil of the winding assembly is wound on the second winding section, and its first and last welded parts are fixed on the sixth and ninth solder pads, respectively.
[0016] The fourth coil of the winding assembly is wound on the second winding section, and its first and last welded parts are fixed on the seventh and tenth solder pads, respectively.
[0017] The fifth coil of the winding assembly is wound on the third winding section, and its beginning and end welding parts are fixed on the fourth and fifth welding pads respectively.
[0018] The sixth coil of the winding assembly is wound on the third winding section, and its beginning and end welded parts are fixed on the seventh and eighth solder pads, respectively.
[0019] As a further implementation, the winding sequence and winding method of the coils in the winding assembly can be adjusted.
[0020] As a further implementation, the first and third coils, as well as the second and fourth coils, can be combined into a single coil during actual winding.
[0021] As a further implementation, the first and second coils are wound in the same direction and have the same number of turns, forming the upper part of a transformer; the third and fourth coils are wound in the same direction and have the same number of turns, forming the lower part of a transformer; and the fifth and sixth coils are wound in the same direction and have the same number of turns, forming a common-mode inductor.
[0022] As a further implementation, the upper part of the transformer, the lower part of the transformer, and the common-mode inductor together form a combined network filter.
[0023] The beneficial effects of this utility model are as follows:
[0024] This utility model provides an integrated transformer combined network filter component, which combines two independent devices, a common mode inductor and a chip transformer, into one device. This can improve winding and surface mount efficiency, save materials, reduce the device's footprint, reduce the number of times customers need to mount the board, and reduce the customer's part number from two to one. The production end only needs to produce one device, saving production time, material costs, and management costs.
[0025] This invention provides an integrated transformer-combined network filter assembly. Utilizing a special design for the magnetic core and winding, it can achieve various circuit modes through different winding methods. The winding process is simple, requires minimal winding machine specifications, and offers high winding efficiency. The overall structure is simple, easy to manufacture, and adaptable to different winding schemes, thus reducing production costs. Attached Figure Description
[0026] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.
[0027] Figure 1 This is a schematic diagram of the overall structure of the integrated transformer combined network filter component of this utility model;
[0028] Figure 2 This is a top view of the E-shaped magnetic core of this utility model. Figure 1 ;
[0029] Figure 3 This is a top view of the sheet-like magnetic core of this utility model.
[0030] Figure 4 This is a top view of the E-shaped magnetic core of this utility model. Figure 2 ;
[0031] Figure 5 This is a schematic diagram of one winding method of this utility model.
[0032] Among them, 10. E-shaped magnetic core, 11. First pad, 12. Second pad, 13. Third pad, 14. Fourth pad, 15. Fifth pad, 16. Sixth pad, 17. Seventh pad, 18. Eighth pad, 19. Ninth pad, 20. Tenth pad, 21. First barrier, 22. Second barrier, 22. Third barrier, 30. Sheet core, 31. First winding section, 32. Second winding section, 33. Third winding section, 111. First coil, 112. Second coil, 113. Third coil, 114. Fourth coil, 115. Fifth coil, 116. Sixth coil. Detailed Implementation
[0033] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.
[0034] Example 1
[0035] like Figure 1-5 As shown, this embodiment provides an integrated transformer-type network filter assembly, including a magnetic core and a winding assembly wound on the magnetic core. The magnetic core includes a sheet magnetic core 30 and an E-shaped magnetic core 10. The sheet magnetic core 30 is glued to the upper part of the E-shaped magnetic core 10, forming a closed magnetic circuit. The E-shaped magnetic core 10 includes three baffles and three winding sections. Multiple solder pads are respectively provided on the three baffles. The winding assembly includes multiple coils, and each end of the coil has a solder part, which is fixedly connected to the corresponding solder pad. The coils of the winding assembly can be wound on the three winding sections of the E-shaped magnetic core 10 in various winding methods.
[0036] The three winding sections are designated as a first winding section 31, a second winding section 32, and a third winding section 33. The first winding section 31 has a first retaining wall 21 and a second retaining wall 22 on both sides. The second winding section 32 has a second retaining wall 22 and a third retaining wall 23 on both sides. The third winding section 33 is located on the second retaining wall 22. Both the first retaining wall 21 and the third retaining wall 23 have two pads, while the second retaining wall 22 has six pads. The two pads on the first retaining wall 21 are designated as first pad 11 and second pad 12. The six pads on the second retaining wall 22 are designated as third pad 13, fourth pad 14, fifth pad 15, sixth pad 16, seventh pad 17, and eighth pad 18. The two pads on the third retaining wall 23 are designated as ninth pad 19 and tenth pad 20.
[0037] The first coil 111 of the winding assembly is wound on the first winding section 31, and its beginning and end soldered parts are fixed to the first solder pad 11 and the third solder pad 13, respectively; the second coil 112 of the winding assembly is wound on the first winding section 31, and its beginning and end soldered parts are fixed to the second solder pad 12 and the fourth solder pad 14, respectively; the third coil 113 of the winding assembly is wound on the second winding section 32, and its beginning and end soldered parts are fixed to the sixth solder pad 16 and the ninth solder pad 19, respectively; the fourth coil 114 of the winding assembly is wound on the second winding section 32, and its beginning and end soldered parts are fixed to the seventh solder pad 17 and the tenth solder pad 20, respectively; the fifth coil 115 of the winding assembly is wound on the third winding section 33, and its beginning and end soldered parts are fixed to the fourth solder pad 14 and the fifth solder pad 15, respectively; the sixth coil 116 of the winding assembly is wound on the third winding section 33, and its beginning and end soldered parts are fixed to the seventh solder pad 17 and the eighth solder pad 18, respectively.
[0038] The first coil 111, second coil 112, third coil 113, fourth coil 114, fifth coil 115, and sixth coil 116 each have a number of winding coils. The first coil 111 and second coil 112 have the same number of turns, the third coil 113 and fourth coil 114 have the same number of turns, and the fifth coil 115 and sixth coil 116 have the same number of turns. The winding sequence and method of the coils in the above winding groups can be adjusted. There is no strict restriction on the specific winding sequence; any one of the winding groups can be wound first according to process requirements. It is sufficient to ensure that the first coil 111 and second coil 112 have the same number of turns, the third coil 113 and fourth coil 114 have the same number of turns, and the fifth coil 115 and sixth coil 116 have the same number of turns. Multiple circuit modes can be achieved through different winding methods. The winding process is simple, requires less sophisticated winding machines, and has high winding efficiency. The overall structure of this utility model's mesh filter component is simple, easy to manufacture, adaptable to different winding schemes, and reduces production costs.
[0039] The first coil 111 and the third coil 113, the second coil 112 and the fourth coil 114 can be combined into a single coil during actual winding.
[0040] The first coil 111 and the second coil 112 are wound in the same direction and have the same number of turns, forming the upper part of a transformer. The third coil 113 and the fourth coil 114 are wound in the same direction and have the same number of turns, forming the lower part of a transformer. The fifth coil 115 and the sixth coil 116 are wound in the same direction and have the same number of turns, forming a common-mode inductor. The upper part of the transformer, the lower part of the transformer, and the common-mode inductor together form a combined network filter. This design combines the common-mode inductor and the chip transformer, two independent components in an inductive filter circuit, into a single component, reducing the number of board mounting steps for customers. The customer's part number is reduced from two to one, and the production end only needs to produce one component, saving production time, material costs, and management costs.
[0041] The technical solution of this utility model integrates a transformer and a common-mode inductor as filtering devices to meet the requirements of 1500V high-voltage isolation.
[0042] This invention's inductive separation scheme is derived from a traditional toroidal network transformer. Communication signal transmission is achieved through transformer induction, and a common-mode coil enhances EMC performance. The device integrates both the transformer and the common-mode coil, meeting the transmission requirements of IEEE 802.3 while also providing 1500VAC high-voltage isolation.
[0043] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. An integrated transformer-combined network port filter assembly, characterized in that, It includes a magnetic core and a winding assembly wound on the magnetic core. The magnetic core includes a sheet magnetic core and an E-shaped magnetic core. The sheet magnetic core is disposed on the upper part of the E-shaped magnetic core, and the two form a closed magnetic circuit. The E-shaped magnetic core includes three baffles and three winding sections. Each of the three baffles is provided with multiple solder pads. The winding section includes multiple coils. Both ends of each coil are provided with solder sections, which are fixedly connected to the corresponding solder pads. The coils of the winding assembly are wound on the three winding sections of the E-shaped magnetic core in various winding methods; The three winding sections are respectively the first winding section, the second winding section, and the third winding section; The first winding section is provided with a first retaining wall and a second retaining wall on both sides, and the second winding section is provided with a second retaining wall and a third retaining wall on both sides, with the third winding section located on the second retaining wall; The first and third retaining walls each have two pads, while the second retaining wall has six pads. The two pads on the first barrier wall are the first pad and the second pad, the six pads on the second barrier wall are the third pad, the fourth pad, the fifth pad, the sixth pad, the seventh pad and the eighth pad, and the two pads on the third barrier wall are the ninth pad and the tenth pad. The first coil of the winding assembly is wound on the first winding section, and the welding parts at its beginning and end are fixed on the first solder pad and the third solder pad, respectively. The second coil of the winding assembly is wound on the first winding section, and the welding parts at its beginning and end are fixed on the second and fourth welding pads, respectively. The third coil of the winding assembly is wound on the second winding section, and its first and last welded parts are fixed on the sixth and ninth solder pads, respectively. The fourth coil of the winding assembly is wound on the second winding section, and its first and last welded parts are fixed on the seventh and tenth solder pads, respectively. The fifth coil of the winding assembly is wound on the third winding section, and its beginning and end welding parts are fixed on the fourth and fifth welding pads respectively. The sixth coil of the winding assembly is wound on the third winding section, and its beginning and end welded parts are fixed on the seventh and eighth solder pads, respectively.
2. The integrated transformer combined network port filter assembly as described in claim 1, characterized in that, The winding sequence and winding method of the coils in the winding assembly can be adjusted.
3. The integrated transformer combined network port filter assembly as described in claim 1, characterized in that, In actual winding, the first and third coils, as well as the second and fourth coils, can be combined into a single coil.
4. The integrated transformer combined network port filter assembly as described in claim 1, characterized in that, The first and second coils are wound in the same direction and have the same number of turns, forming the upper part of a transformer. The third and fourth coils are wound in the same direction and have the same number of turns, forming the lower part of a transformer. The fifth and sixth coils are wound in the same direction and have the same number of turns, forming a common-mode inductor.
5. The integrated transformer combined network port filter assembly as described in claim 1, characterized in that, The upper part of the transformer, the lower part of the transformer, and the common-mode inductor together form a combined network filter.