A magnetic core structure and a T transformer using the same
By designing a large-area welding station, wire welding groove, and avoidance guide position on the core structure of the T transformer, the problem of insufficient pad spacing was solved, the welding performance and inductor performance were improved, and the current carrying capacity was enhanced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN KUNCI TECH CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-08-04
AI Technical Summary
The existing T-transformer has a core that is too small and a pad spacing that is too small, resulting in performance defects such as short circuits in the bonding wires, which affects the performance of the network transformer.
Design a magnetic core structure, including setting three large-area welding platforms on the side pillars, setting wire welding grooves and avoidance guide positions to increase the welding area and the smoothness of wire arrangement, and using cross welding grooves and notches to optimize the welding method, thereby increasing the number of winding coils and wire diameter.
It improves welding performance, reduces the risk of short circuits due to wire bridging, enhances the inductance and current capacity of the inductor, and makes full use of the space of the winding post.
Smart Images
Figure CN224595336U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic components, specifically to a magnetic core structure and a T-transformer using the magnetic core structure. Background Technology
[0002] The T-transformer, as an important component of network transformers, consists of a 1:1 transformer. Based on the principle of electromagnetic coupling in transformers, when a balanced signal is applied to the twisted pair (UTP), an equal signal can be induced on the primary side of the transformer without loss, thus enabling signal transmission.
[0003] Due to the small size of network transformers, T-type transformers typically employ a surface-mount structure, primarily consisting of I-shaped and cylindrical cores, with I-shaped cores being widely used due to their even smaller size. However, existing transformers using I-shaped cores have relatively small cores, resulting in smaller turns and wire diameters in the wound coils, leading to relatively weaker inductance and current-carrying capacity. Furthermore, the use of numerous pads on the side columns results in excessively small pad spacing, which can easily cause short circuits and other performance defects, thus affecting the performance of the network transformer. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a magnetic core structure and a T-transformer using this magnetic core structure, thereby solving the problems of small magnetic cores and insufficient pad spacing in existing T-transformers.
[0005] The technical solution adopted by this utility model to achieve the above objectives is as follows:
[0006] A magnetic core structure includes a magnetic core body, which includes a first side post and a second side post. A winding post is provided between the first side post and the second side post. Three welding stations are respectively provided on the upper ends of the first side post and the second side post. Two of the three welding stations are located at the two ends of the first side post or the second side post, and one of the three welding stations is located in the middle of the first side post or the second side post and is spaced apart from the other two welding stations. The three welding stations on the first side post are staggered with the three welding stations on the second side post. One of the three welding stations is a common terminal welding station, and the upper end face of the three welding stations is provided with a wire welding groove.
[0007] The wire welding groove extends to both sides along the direction of wire welding to the edge of the welding table, forming a through groove.
[0008] The three welding stations located on the first side column are the first welding station, the second welding station, and the third welding station. The first welding station and the second welding station are located at opposite ends of the first side column, and the first welding station is a common terminal welding station. The second welding station is located away from the first welding station. The three welding stations located on the second side column are the fourth welding station, the fifth welding station, and the sixth welding station. The fourth welding station and the sixth welding station are located at opposite ends of the second side column, and the fourth welding station is a common terminal welding station. The fifth welding station is located away from the fourth welding station.
[0009] The inner surfaces of the first, third, fourth, and sixth welding stations are provided with notches, the width of which is the same as the width of the wire welding groove.
[0010] The first welding station and the fourth welding station are provided with two wire welding grooves, and the two wire welding grooves are arranged crosswise.
[0011] The intersection of the two intersecting wire welding grooves is higher than the surrounding area.
[0012] The inner sides of the second and fifth welding stations are provided with clearance guides.
[0013] A T-transformer using the aforementioned core structure includes a core body, a cover plate at the lower end of the core body, and two sets of magnetic coils are stacked on the winding post. Each set of magnetic coils consists of two alternately wound magnetic coils, and each magnetic coil extends to both ends to form terminals, which are soldered to the soldering platform.
[0014] The terminal block is placed along the direction of the wire welding groove after it is aligned with the welding station, and then welded into the wire welding groove.
[0015] The beneficial effects of this utility model are as follows: The magnetic core structure of this utility model adopts an I-shaped structure design, with three large-area welding platforms on the side columns. The three welding platforms include two single-wire welding platforms and one double-wire welding platform. Wire welding grooves with the same welding direction as the wires are provided on the welding platforms, thereby enabling better welding of the wires, increasing the contact area between the wires and the magnetic core, and improving welding performance. At the same time, the two single-wire welding platforms are spaced apart and far from the double-wire welding platform, and notches are provided on the inner sidewalls of the welding platforms at the ends, and clearance parts are provided on the inner side of the middle welding platform. This allows for better accommodation and guidance of the wires, enabling the wires to be routed and arranged in an orderly manner, thereby effectively reducing the risk of short circuits.
[0016] The T-transformer of this invention uses a magnetic core body, and two sets of coil groups are wound in layers on the winding post of the magnetic core body. Each coil group consists of two alternately wound coils. By adopting the magnetic core body structure of this invention, the space occupied by the winding post due to wiring can be reduced, making full use of the winding post space, thereby increasing the number of turns and the diameter of the winding wire, thus enhancing the inductance and current value. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the magnetic attraction structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the T-transformer structure of this utility model;
[0019] Figure 3 for Figure 2 Exploded view;
[0020] Figure 4 This is the equivalent circuit of the T transformer of this utility model.
[0021] In the diagram: 1. First side post 2. Second side post 3. Winding post 4. Wire welding groove 5. First welding station 6. Second welding station 7. Third welding station 8. Fourth welding station 9. Fifth welding station 10. Sixth welding station 11. Notch 12. Clearance guide 13. Cover plate 14. First coil 15. Second coil 16. Third coil 17. Fourth coil 18. Extension of winding post Detailed Implementation
[0022] Example: See Figure 1 This embodiment provides a magnetic core structure, which includes a magnetic core body. The magnetic core body includes a first side post 1 and a second side post 2. A winding post 3 is provided between the first side post 1 and the second side post 2. Three welding stations are respectively provided on the upper ends of the first side post 1 and the second side post 2. Two of the three welding stations are located at the two ends of the first side post 1 or the second side post 2, and one of the three welding stations is located in the middle of the first side post 1 or the second side post 2 and is spaced apart from the other two welding stations. The three welding stations on the first side post 1 are staggered with the three welding stations on the second side post 2. One of the three welding stations is a common terminal welding station, and the upper end face of the three welding stations is provided with a wire welding groove 4.
[0023] The wire welding groove 4 extends to both sides along the direction of wire welding to the edge of the welding table, forming a through groove.
[0024] The three welding stations located on the first side column 1 are the first welding station 5, the second welding station 6, and the third welding station 7. The first welding station 5 and the second welding station 6 are located at opposite ends of the first side column 1, and the first welding station 5 is a common terminal welding station. The second welding station 6 is located away from the first welding station 5. The three welding stations located on the second side column 2 are the fourth welding station 8, the fifth welding station 9, and the sixth welding station 10. The fourth welding station 8 and the sixth welding station 9 are located at opposite ends of the second side column 2, and the fourth welding station 8 is a common terminal welding station. The fifth welding station 9 is located away from the fourth welding station.
[0025] The inner surfaces of the first welding station 5, the third welding station 7, the fourth welding station 8 and the sixth welding station 10 are provided with notches 11, the width of which is the same as the width of the wire welding groove 4.
[0026] The first welding station 5 and the fourth welding station 8 are provided with two wire welding grooves 4, and the two wire welding grooves 4 are arranged crosswise.
[0027] The intersection of the two intersecting wire welding grooves 4 is higher than the surrounding area.
[0028] The inner sides of the second welding station 6 and the fifth welding station 9 are provided with clearance guides 12.
[0029] A winding post extension 18 is provided at the connection between the first side post 1 and the second side post 2 and the winding post 3. By providing the winding post extension 18, the magnetic coil can be brought close to the first side post 1 and the second side post 2. The winding post extension 18 can facilitate the connection of the terminals at both ends of the magnetic coil, thereby increasing the number of windings and the wire diameter of the magnetic coil.
[0030] See Figures 2 to 4 A T-transformer using the aforementioned magnetic core structure includes a magnetic core body, a cover plate 13 located at the lower end of the magnetic core body, and two sets of magnetic coil groups are stacked on the winding post 3. Each set of magnetic coil groups consists of two magnetic coils wound alternately, and each magnetic coil extends to both ends to form terminals, which are soldered to the soldering table.
[0031] The terminal block is placed along the direction of the wire welding groove after it is aligned with the welding station, and then welded into the wire welding groove.
[0032] Among them, the two coils in the lower layer of the magnetic coil group are the first coil 14 and the second coil 15, and the two coils in the upper layer of the magnetic coil group are the third coil 16 and the fourth coil 17.
[0033] One end of the first coil 14 is soldered to the first soldering station 5, and the other end is soldered to the sixth soldering station 10. One end of the second coil 15 is soldered to the third soldering station 7, and the other end is soldered to the fourth soldering station 8. One end of the third coil 16 is soldered to the first soldering station 5, and the other end is soldered to the fifth soldering station 9. One end of the fourth coil 17 is soldered to the second soldering station 6, and the other end is soldered to the fourth soldering station 8.
[0034] However, the above description is only a preferred embodiment of the present utility model and is not intended to limit the patent scope of the present utility model. Therefore, all other embodiments described in the present utility model and the equivalent changes made thereto are included within the protection scope of the present utility model.
Claims
1. A magnetic core structure, characterized in that, It includes a magnetic core body, which includes a first side post and a second side post. A winding post is provided between the first side post and the second side post. Three welding stations are respectively provided on the upper end of the first side post and the second side post. Two of the three welding stations are located at the two ends of the first side post or the second side post, and one of the three welding stations is located in the middle of the first side post or the second side post and is spaced apart from the other two welding stations. The three welding stations on the first side post are staggered with the three welding stations on the second side post. One of the three welding stations is a common terminal welding station, and the upper end face of the three welding stations is provided with a wire welding groove.
2. The magnetic core structure according to claim 1, characterized in that, The wire welding groove extends to both sides along the direction of wire welding to the edge of the welding table, forming a through groove.
3. The magnetic core structure according to claim 1, characterized in that, The three welding stations located on the first side column are the first welding station, the second welding station, and the third welding station. The first welding station and the second welding station are located at opposite ends of the first side column, and the first welding station is a common terminal welding station. The second welding station is located away from the first welding station. The three welding stations located on the second side column are the fourth welding station, the fifth welding station, and the sixth welding station. The fourth welding station and the sixth welding station are located at opposite ends of the second side column, and the fourth welding station is a common terminal welding station. The fifth welding station is located away from the fourth welding station.
4. The magnetic core structure according to claim 3, characterized in that, The inner surfaces of the first, third, fourth, and sixth welding stations are provided with notches, the width of which is the same as the width of the wire welding groove.
5. The magnetic core structure according to claim 3, characterized in that, The first welding station and the fourth welding station are provided with two wire welding grooves, and the two wire welding grooves are arranged crosswise.
6. The magnetic core structure according to claim 5, characterized in that, The intersection of the two intersecting wire welding grooves is higher than the surrounding area.
7. The magnetic core structure according to claim 3, characterized in that, The inner sides of the second and fifth welding stations are provided with clearance guides.
8. A T-transformer employing the core structure described in any one of claims 1 to 7, characterized in that, The device includes a magnetic core body, a cover plate located at the lower end of the magnetic core body, and two sets of magnetic coils are stacked on the winding post. Each set of magnetic coils consists of two magnetic coils wound alternately, and each magnetic coil extends to both ends to form a terminal, which is soldered to the soldering table.
9. The T-transformer according to claim 8, characterized in that, The terminal block is placed along the direction of the wire welding groove after it is aligned with the welding station, and then welded into the wire welding groove.