Magnetic coil module and electric connector

Abstract

The invention discloses a magnetic coil module and an electric connector, the magnetic coil module comprises a first magnetic core, a second magnetic core and a plurality of enamelled wires wound on the first magnetic core and the second magnetic core, the enamelled wires are wound on the first magnetic core to form a transformer, the enamelled wires are wound on the second magnetic core to form a common mode choke, and the common mode choke is wound on the first magnetic core to form a common mode coil. The transformer is electrically connected with the common mode choke coil to form a signal transmission channel, the transformer comprises a center tap, the center tap comprises a tin pick-up part which forms mechanical and electrical connection through tin pick-up, the magnetic coil module further comprises an insulating part wrapping the tin pick-up part, and the insulating part is electrically connected with the common mode choke coil. The magnetic coil module can bear high-voltage impact of more than 3KV. According to the magnetic coil module and the electric connector provided by the invention, the insulating part is coated on the tin pick-up part of the center tap, so that the sparking of the tin pick-up part at the center tap and the magnetic coil or other parts due to high-voltage impact is greatly reduced, and the magnetic coil module and the electric connector have relatively high voltage resistance.

Description

Technical field

[0001] The present invention relates to a magnetic coil module and an electric connector, and in particular to a magnetic coil module and an electric connector that are resistant to high voltage impact and are used in the communication field. [Background Technology]

[0002] Please refer to U.S. Patent No. US8968026 published on March 3, 2015, which discloses an electrical connector including an insulating body and a terminal module housed in the insulating body, the terminal module including a magnetic coil assembly, the magnetic coil assembly including a plurality of magnetic coils and a plurality of enameled wires wound on the magnetic coils, the enameled wires being wound into a transformer and a common-mode choke, the transformer forming a center tap when wound, and having a welding bead welded at the center tap to achieve mechanical and electrical connection, the welding bead being exposed to the outside, and when there is an external high-voltage shock, such as a lightning strike, the welding bead is likely to spark with the magnetic coil or other structures inside the connector, resulting in poor voltage resistance. As a result, the connector has a weak ability to resist high-voltage shocks, so an improved electrical connector is needed to overcome the shortcomings of the prior art. [Summary of the invention]

[0003] The main purpose of the present invention is to provide a magnetic coil module used in the communication field, which can withstand higher high voltage impact.

[0004] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a magnetic coil module, comprising a first magnetic core, a second magnetic core, and a plurality of enameled wires wound around the first magnetic core and the second magnetic core, the enameled wires being wound around the first magnetic core to form a transformer, the enameled wires being wound around the second magnetic core to form a common-mode choke, the transformer being electrically connected to the common-mode choke to form a signal transmission channel, the transformer comprising a center tap, the center tap comprising a tinned portion for forming a mechanical and electrical connection, the magnetic coil module further comprising an insulating member coated on the tinned portion, and the magnetic coil module being capable of withstanding high-voltage shocks exceeding 3KV.

[0005] Another main purpose of the present invention is to provide an electrical connector used in the communication field, which can withstand higher high voltage impact.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: an electrical connector, which can be matched with a docking connector and can be installed on an external circuit board, the electrical connector including an insulating body, a conductive terminal accommodated in the insulating body, and a magnetic coil module accommodated in the insulating body and electrically connected to the conductive terminal, the magnetic coil module including a magnetic core and a plurality of enameled wires wound on the magnetic core, the enameled wires are wound on the magnetic core to form a transformer and a common-mode choke, the transformer and the common-mode choke form a signal transmission channel, the transformer includes a primary center tap and a secondary center tap, the secondary center tap includes a tinned portion that is tinned to form a mechanical and electrical connection, and the magnetic coil module further includes an insulating part covered on the tinned portion.

[0007] Compared with the prior art, the advantages of the present invention are that the tinned portion of the center tap of the magnetic coil module and the electrical connector of the present invention is covered with an insulating member, thereby greatly reducing the sparking between the tinned portion at the center tap and the magnetic coil or other parts due to high-voltage impact, and having higher pressure resistance.

Brief Description of the Drawings

[0008] Figure 1 is a perspective view of an electrical connector according to the present invention.

[0009] Figure 2 yes Figure 1 A three-dimensional view of the terminal module of the electrical connector is shown.

[0010] Figure 3 yes Figure 1 The circuit diagram of the electrical connector is shown.

[0011] Figure 4 yes Figure 3 Schematic diagram of the wiring for the filter path of one of the paths in the circuit diagram shown.

[0012] Figure 5 yes Figure 4 The three-dimensional view of the winding structure shown in FIG. 1 shows that the tinned portion is not covered with an insulating member.

[0013] Figure 6 yes Figure 4 The three-dimensional diagram of the winding structure shown in FIG. 1 shows that the tinned portion is covered with an insulating member.

[0014]

Main component symbol description

[0015] Electrical connector 100 Insulation body 10

[0016] Conductive terminal 20 Magnetic coil module 30

[0017] Magnetic core 31 Enameled wire 32

[0018] First enameled wire 320 Second enameled wire 321

[0019] The third enameled wire 323 and the fourth enameled wire 324

[0020] Fifth enameled wire 325 transformer 33

[0021] Primary center tap 330 Secondary center tap 331

[0022] Tinning part 332 Insulation part 333

[0023] Primary coil 334 Primary coil 334

[0024] Secondary coil 335 Secondary coil 335

[0025] Common mode choke 34 Insulation carrier 35

[0026] The first set of terminals 36 The second set of terminals 37

[0027] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. [Specific implementation method]

[0028] like Figures 1 to 6 FIG2 shows an electrical connector 100 according to the present invention. The electrical connector 100 can be mounted on an external circuit board (not shown) and can be inserted into and mated with a mating connector (not shown). The electrical connector 100 includes an insulating body 10, conductive terminals 20 housed within the insulating body 10, and a magnetic coil module 30 housed within the insulating body 10 and electrically connected to the conductive terminals 20. The electrical connector is an RJ45-type receptacle connector, comprising eight conductive terminals 20 forming four pairs of transmission channels.

[0029] The magnetic coil module 30 includes several magnetic cores 31 and several enameled wires 32 wound around the cores 31. The enameled wires 32 are wound around the cores 31 to form transformers 33 and common-mode chokes 34. In this embodiment, the magnetic coil module 30 includes eight separate magnetic cores 31. Four of the magnetic cores 31 (i.e., the first magnetic cores) are wound to form the transformers 33. The remaining four magnetic cores 31 (i.e., the second magnetic cores) are wound to form the common-mode chokes 34. Each transformer 33 and each common-mode choke 34 are electrically connected together to form a signal transmission channel, which is electrically connected to the transmission channel formed by the conductive terminals 20. The transformers 33 and corresponding common-mode chokes 34 filter the signal transmission, improving the signal transmission quality of the entire connector 100. The magnetic coil module 30 further includes an insulating carrier 35 that houses the magnetic cores 31, and a first set of terminals 36 and a second set of terminals 37 mounted on the insulating carrier 35.

[0030] Each transformer 33 includes a primary center tap 330 and a secondary center tap 331. The primary center tap 330 is mechanically and electrically connected to a corresponding one of the first set of terminals 36. The secondary center tap 331 includes a tinned portion 332 formed by tinning one end of two sets of enameled wires 32 to form a mechanical and electrical connection. The magnetic coil module 30 further includes an insulating member 333 covering the tinned portion 332, thereby enabling the magnetic coil module 30 to withstand high voltage shocks of 3 kV to 8 kV. Specifically, the insulating member 333 is a heat shrink tubing that is heat-shrunk and fixed to the tinned portion 332.

[0031] Each transformer 33 includes a primary coil 334 and a secondary coil 335 coupled to the primary coil 334 . The primary center tap 330 is provided on the primary coil 334 . The secondary center tap 331 is provided on the secondary coil 335 .

[0032] The enameled wire 32 includes a first enameled wire 320 and a second enameled wire 321. One end of the first enameled wire 320 and one end of the second enameled wire 321 are tinned to form the primary center tap 330. The other ends of the first enameled wire 320 and the second enameled wire 321 together form the input end of the signal transmission channel. The other ends of the first enameled wire 320 and the second enameled wire 321 are mechanically and electrically connected to a corresponding one of the first set of terminals 36.

[0033] The enameled wire 32 includes a third enameled wire 323, a fourth enameled wire 324, and a fifth enameled wire 325. Together, the third and fifth enameled wires 323 and 325 form the secondary coil 335. One end of the third enameled wire 323 and one end of the fifth enameled wire 325 form the secondary center tap 331. One end of the fourth enameled wire 324 and the secondary center tap 331 are tinned to form the tinned portion 332. Together, the third, fourth, and fifth enameled wires 323, 324, and 325 form the common-mode choke coil 34. The other ends of the third, fourth, and fifth enameled wires 323, 324, and 325 form the output end of the signal transmission channel. The other ends of the third, fourth, and fifth enameled wires 323, 324, and 325 are mechanically and electrically connected to corresponding ones of the second set of terminals 37.

[0034] To further enhance the magnetic coil module 30's ability to withstand high-voltage shocks, the enameled wire 32 is fully insulated (FIW) wire. Compared to conventional UWW (polyurethane enamelled copper wire) straight-weld enameled wire, this allows the magnetic coil module 30 to withstand higher high-voltage shocks.

[0035] The above descriptions are only some embodiments of the present invention, not all embodiments. Any equivalent changes made to the technical solution of the present invention by ordinary technicians in this field after reading the specification of the present invention are covered by the claims of the present invention.

Claims

1. A magnetic coil module, comprising a first magnetic core, a second magnetic core, and a plurality of enameled wires wound around the first and second magnetic cores, wherein the enameled wires are wound around the first magnetic core to form a transformer, and the enameled wires are wound around the second magnetic core to form a common-mode choke coil, wherein the transformer and the common-mode choke coil are electrically connected to form a signal transmission channel, wherein the transformer includes a center tap, and the center tap includes a tinned portion for forming a mechanical and electrical connection, wherein: The magnetic coil module further includes an insulating member coated on the tinning portion, and the magnetic coil module can withstand a high voltage impact of more than 3KV.

2. The magnetic coil module according to claim 1, wherein: The insulating member is a heat shrink tubing which is fixed on the tinning portion by heat shrinkage.

3. The magnetic coil module according to claim 1, wherein: The transformer includes a primary coil and a secondary coil coupled to the primary coil, the center tap includes a primary center tap set on the primary coil and a secondary center tap set on the secondary coil, the enameled wire includes a first enameled wire and a second enameled wire, one end of the first enameled wire and one end of the second enameled wire are tinned to form the primary center tap, and the other end of the first enameled wire and the other end of the second enameled wire together form the input end of the signal transmission channel.

4. The magnetic coil module according to claim 3, wherein: The enameled wire includes a third enameled wire, a fourth enameled wire and a fifth enameled wire, the third enameled wire and the fifth enameled wire together form the secondary coil, one end of the third enameled wire and one end of the fifth enameled wire form the secondary center tap, one end of the fourth enameled wire and the primary center tap are tinned to form the tinned portion, the third enameled wire, the fourth enameled wire and the fifth enameled wire together form the common mode choke, the other end of the third enameled wire, the other end of the fourth enameled wire and the other end of the fifth enameled wire form the output end of the signal transmission channel.

5. The magnetic coil module according to claim 1, wherein: The enameled wire is a completely insulated wire and can withstand high voltage impact below 8KV.

6. An electrical connector capable of mating with a docking connector and being mounted on an external circuit board, the electrical connector comprising an insulating body, conductive terminals housed within the insulating body, and a magnetic coil module housed within the insulating body and electrically connected to the conductive terminals, the magnetic coil module comprising a magnetic core and a plurality of enameled wires wound around the magnetic core, the enameled wires wound around the magnetic core forming a transformer and a common-mode choke, the transformer and the common-mode choke forming a signal transmission channel, the transformer comprising a primary center tap and a secondary center tap, the secondary center tap including a tinned portion for forming a mechanical and electrical connection, characterized in that: The magnetic coil module further includes an insulating member coated on the tinning portion.

7. The electrical connector according to claim 6, wherein: The insulating member is a heat shrink tubing which is fixed on the tinning portion by heat shrinkage.

8. The electrical connector according to claim 6, wherein: The transformer includes a primary coil and a secondary coil coupled with the primary coil, the primary center tap is arranged on the primary coil, and the secondary center tap is arranged on the secondary coil. The enameled wire includes a first enameled wire and a second enameled wire, one end of the first enameled wire and one end of the second enameled wire are tinned to form the primary center tap, and the other end of the first enameled wire and the other end of the second enameled wire jointly form the input end of the signal transmission channel. The enameled wire includes a third enameled wire, a fourth enameled wire and a fifth enameled wire, and the third enameled wire and the fifth enameled wire jointly form the secondary coil, one end of the third enameled wire and one end of the fifth enameled wire form the secondary center tap, and one end of the fourth enameled wire and the center tap are tinned to form the tinned portion. The third enameled wire, the fourth enameled wire and the fifth enameled wire jointly form the common mode choke, and the other end of the third enameled wire and the other end of the fifth enameled wire form the output end of the signal transmission channel.

9. The electrical connector according to claim 6, wherein: The enameled wire is a completely insulated wire and can withstand a high voltage shock of 3KV to 8KV.

10. The electrical connector according to claim 6, wherein: The terminal module includes an insulating carrier, a first group of terminals and a second group of terminals installed on the insulating carrier, the magnetic coil module is accommodated on the insulating carrier, one end of the first enameled wire, one end of the second enameled wire and the primary center tap are mechanically and electrically connected to the corresponding first group of terminals, and the other end of the third enameled wire, the other end of the fourth enameled wire and the other end of the fifth enameled wire are mechanically and electrically connected to the corresponding second group of terminals.

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