electrical connectors

Abstract

The present invention discloses an electrical connector that can be mounted on an external circuit board. The electrical connector includes an insulating body and a terminal module assembled on the insulating body. The terminal module includes a docking terminal that can contact and mate with a docking plug, an insulating carrier having a receiving cavity, an intermediate terminal fixed to one side of the insulating carrier and electrically connected to the docking terminal, a pin terminal fixed to the other side of the insulating carrier for mounting on an external circuit board, and a filter module received in the receiving cavity of the insulating carrier and electrically connected to the intermediate terminal and the pin terminal. The insulating carrier is a two-piece housing, the intermediate terminal being fixed in one housing and the pin terminal being fixed in the other housing. The present invention forms an insulating carrier that accommodates the filter module by assembling the two-piece housing, thereby achieving a stable combination of the insulating carrier and the fisheye structure pin terminal. The invention also has stable quality, lower cost, small equipment investment, and can be achieved using only conventional molds and dies.

Description

Technical field

[0001] The present invention relates to an electrical connector, and more particularly to an electrical connector with a two-piece housing. [Background Technology]

[0002] With the increase in the signal transmission rate of RJ45 connectors, the use of fisheye structure pin terminals for press-fit connection to customer motherboards has become mainstream. Compared with ordinary through-hole mounting structure terminals, fisheye structure pin terminals have strong retention force, no need for soldering, low cost, good signal transmission performance, and meet the current high-precision design requirements of products. However, ordinary one-piece insulating carriers can only be implanted with through-hole mounting structure terminals. How to assemble and combine fisheye structure pin terminals with coil plastic shells is a process that the industry has its own methods. For example, adding a circuit board to the bottom of the terminal module to directly press-fit with the fisheye structure pin terminal, and then connecting the two circuit boards through the upper and lower intermediate terminals arranged on the insulating carrier clamped therein is one way. However, this process is complex, costly, and requires large equipment investment. Therefore, an improved electrical connector is needed to overcome the shortcomings of the existing technology. [Summary of the invention]

[0003] The main purpose of the present invention is to provide an electrical connector with more stable quality, lower cost, small equipment investment, and only conventional molds and dies are needed to achieve a stable combination of a two-piece housing and a fisheye structure terminal.

[0004] To achieve the above-mentioned purpose, the present invention can adopt the following technical solution: an electrical connector, which can be installed on an external circuit board, the electrical connector includes an insulating body and a terminal module assembled on the insulating body, the terminal module includes a docking terminal that can contact and cooperate with a docking plug, an insulating carrier with a receiving cavity, an intermediate terminal fixed on one side of the insulating carrier and electrically connected to the docking terminal, a pin terminal fixed on the other side of the insulating carrier for installation on an external circuit board, and a filter module received in the receiving cavity of the insulating carrier and electrically connected to the intermediate terminal and the pin terminal, characterized in that: the insulating carrier is a two-piece shell, the intermediate terminal is fixed in one shell, and the pin terminal is fixed in the other shell.

[0005] Furthermore, the two-piece housing includes an upper housing and a lower housing opposite to the upper housing, the intermediate terminal is mounted on the upper housing, and the pin terminal is integrally formed with the lower housing.

[0006] Furthermore, the pin terminal includes a contact portion electrically connected to the filter module, a mounting portion for mounting on an external circuit board, and an intermediate portion connecting the contact portion and the mounting portion, and the mounting portion is a fisheye structure.

[0007] Furthermore, the terminal module further includes a circuit board, and the intermediate terminal and the docking terminal are electrically connected through the circuit board.

[0008] Furthermore, the circuit board is arranged horizontally, the docking terminal is located at the front of the circuit board, and the insulating carrier is located at the bottom of the circuit board.

[0009] Furthermore, the upper housing includes a generally flat top wall and an intermediate wall extending downwardly from the top wall. The lower housing is generally flat. The upper and lower housings are assembled vertically, forming receiving cavities on both sides. The filter modules include a first filter module received in one receiving cavity and a second filter module received in an opposite receiving cavity.

[0010] Furthermore, the terminal module further includes a metal shielding sheet formed on the middle wall, the lower shell is provided with a through slot, and the metal shielding sheet extends downward through the through slot and can be connected to an external circuit board.

[0011] Furthermore, the pin terminal includes a plurality of first pin terminals and a plurality of second pin terminals, part of the first pin terminals and part of the second pin terminals form a first group arranged on one side of the first filter module and electrically connected to one end of the first filter module, another part of the first pin terminals and another part of the second pin terminals form a second group arranged on the other side of the second filter group and electrically connected to one end of the second filter module, the middle parts of the first pin terminal and the second pin terminal have different shapes, so that the contact parts of the first pin terminal and the second pin terminal arranged adjacent to each other in the first group and the second group have different longitudinal heights, and the mounting parts are staggered into two rows.

[0012] Furthermore, part of the intermediate terminals form a first group arranged on the side of the first filter module and electrically connected to the other end of the first filter module, and another part of the intermediate terminals form a second group arranged on the other side of the second filter module and electrically connected to the other end of the second filter module, and the adjacent intermediate terminals in the first group and the second group are staggered and arranged in two rows.

[0013] Optionally, the pin terminal is a through-hole mounting structure.

[0014] Compared with the prior art, the advantages of the present invention are: the present invention forms an insulating carrier by assembling a two-piece shell, thereby achieving a stable combination of the insulating carrier and the fisheye structure pin terminal, and has stable quality, lower cost, small equipment investment, and can be achieved with only conventional molds and dies.

Brief Description of the Drawings

[0015] Figure 1 FIG. 1 is a perspective view of an electrical connector according to the present invention.

[0016] Figure 2 yes Figure 1 A perspective view of the electrical connector from another perspective is shown.

[0017] Figure 3 yes Figure 1 A partially exploded view of the electrical connector is shown.

[0018] Figure 4 yes Figure 1 A three-dimensional view of the terminal module of the electrical connector is shown.

[0019] Figure 5 yes Figure 4 A three-dimensional view of the terminal module of the electrical connector from another perspective is shown.

[0020] Figure 6 yes Figure 4 A partial exploded view of the terminal module of the electrical connector is shown.

[0021] Figure 7 yes Figure 4 The terminal module of the electrical connector shown is a three-dimensional view without the filter module installed.

[0022] Figure 8 yes Figure 7 A three-dimensional view of the terminal module of the electrical connector from another perspective is shown.

[0023] Figure 9 yes Figure 7 A partial exploded view of the terminal module of the electrical connector is shown.

[0024] Figure 10 yes Figure 9 The terminal module of the electrical connector is shown in a partially exploded view with the circuit board removed.

[0025] Figure 11 yes Figure 10 A partially exploded view of the terminal module of the electrical connector from another perspective is shown.

[0026] Figure 12 yes Figure 10 A further exploded view of the terminal module of the electrical connector is shown.

[0027] Figure 13 yes Figure 11 A further exploded view of the terminal module of the electrical connector is shown.

[0028] Figure 14 yes Figure 12 A further enlarged view of the intermediate terminal and the pin terminal of the electrical connector is shown.

[0029]

Main component symbol description

[0030] Electrical connector 100 insulating body 1

[0031] Terminal module 2 insulation carrier 20

[0032] Circuit board 21 docking terminal 22

[0033] Intermediate terminal 23 filter module 24

[0034] Pin terminal 25 upper housing 201

[0035] Lower housing 202 top wall 211

[0036] Side walls 212, 213 and middle wall 214

[0037] Terminal hole 231 first positioning columns 2121, 2122

[0038] Second positioning columns 2131 and 2132 First positioning holes 2123 and 2124

[0039] The second positioning hole 2133 and the third positioning holes 2022 and 2023

[0040] Fourth positioning holes 2024, 2025 Third positioning columns 2026, 2027

[0041] Fourth positioning post 2028 first recess 2141

[0042] Second recess 2142 First receiving cavity 2143

[0043] The second receiving cavity 2144 and the first filter module 241

[0044] Second filter module 242 metal shielding sheet 26

[0045] First clamping portion 261 Second clamping portion 262

[0046] Shield grounding pin 263 through slot 2021

[0047] First pin terminal 251 Second pin terminal 252

[0048] First contact portion 31 and first intermediate portion 32

[0049] First mounting portion 33 and second contact portion 41

[0050] Second intermediate portion 42 and second mounting portion 43

[0051] The first vertical portion 321 and the first horizontal portion 322

[0052] first extension portion 323 and second horizontal portion 421

[0053] The first set of pin terminals 51 of the second vertical portion 422

[0054] The second group of pin terminals 52 and the first group of intermediate terminals 61

[0055] The second set of intermediate terminals 62 shields the housing 3 [Specific implementation method]

[0056] See also Figures 1 to 14 FIG2 shows an electrical connector 100 according to the present invention, which can be inserted into and mated with a mating connector (not shown) and mounted to an external device (not shown). The electrical connector includes an insulating body 1, a terminal module 2 mounted within the insulating body 1, and a metal housing 3 disposed outside the insulating body 1. The electrical connector 100 is an RJ45 connector.

[0057] The terminal module 2 includes a docking terminal 22 that contacts and cooperates with the docking plug, a circuit board 21 connected to the docking terminal, an insulating carrier 20 with a receiving cavity, an intermediate terminal 23 fixed on one side of the insulating carrier 20 and electrically connected to the docking terminal 22 through the circuit board 21, a pin terminal 25 fixed on the other side of the insulating carrier 20, and a filter module 24 received in the receiving cavity of the insulating carrier 20 and electrically connected to the intermediate terminal 23 and the pin terminal 25.

[0058] The circuit board 21 is arranged horizontally, the mating terminals 22 are located at the front of the circuit board 21, and the insulating carrier 20 is located at the bottom of the circuit board 21. The insulating carrier 20 is a two-piece housing, including an upper housing 201 and a lower housing 202 disposed opposite the upper housing 201. The upper housing 201 includes a top wall 211, side walls 212 and 213, and a middle wall 214. The top wall 211 is generally flat. The middle wall 214 is located below the top wall 211 and extends downwardly perpendicular to the top wall 211. The top wall is provided with a plurality of middle terminal holes 231. Two first positioning posts 2121 and 2122 protrude downwardly from the bottom of the side wall 212, and two second positioning posts 2131 and 2132 protrude downwardly from the bottom of the side wall 213. The sidewall 212 also has two first positioning holes 2123 and 2124 at its lower end. The first positioning holes 2123 and 2124 are recessed inward and extend through the bottom of the sidewall 212. The sidewall 213 has a second positioning hole 2133 at its lower end. The second positioning hole 2133 is protruding inward and extends through the bottom of the sidewall 213. The top wall 211, sidewalls 212 and 213, and middle wall 214 each have a first recessed portion 2141 and a second recessed portion 2142 formed inwardly on two side surfaces perpendicular to the mating direction. The lower shell 202 is roughly in the shape of a plate, and third positioning holes 2022 and 2023 are provided at positions corresponding to the first positioning columns 2121 and 2122, and fourth positioning holes 2024 and 2025 are provided at positions corresponding to the second positioning columns 2131 and 2132. Third positioning columns 2026 and 2027 are provided at positions corresponding to the first positioning holes 2123 and 2124, and a fourth positioning column 2028 is provided at the position of the second positioning hole 2133. When the upper shell 201 and the lower shell 202 are assembled in the up and down directions, the first positioning columns 2121 and 2122 are accommodated and fixed in the third positioning holes 2022 and 2023, the second positioning columns 2131 and 2132 are accommodated and fixed in the fourth positioning holes 2024 and 2025, the third positioning columns 2026 and 2027 are accommodated and fixed in the first positioning holes 2123 and 2124, and the fourth positioning column 2028 is accommodated and fixed in the second positioning hole 2133. The first recess 2141, the second recess 2142 and the lower shell 202 together constitute a first accommodating cavity 2143 and a second accommodating cavity 2144 that are relatively arranged. The filter module 24 includes a first filter module 241 and a second filter module 242. The first filter module 241 is accommodated in the first accommodating cavity 2143, and the second filter module 242 is accommodated in the second accommodating cavity 2144.

[0059] The terminal module 2 further includes a metal shielding sheet 26. The upper housing 201 is integrally formed with the metal shielding sheet 26. The metal shielding sheet 26 includes a first clamping portion 261 that clamps to the middle wall 214, a second clamping portion 262 that extends downward from the first clamping portion 261 and beyond the bottom of the middle wall 214, and a shielding grounding pin 263 that extends downward from the second clamping portion 262. The shielding grounding pin 263 has a fisheye-shaped structure and can be press-fitted to an external circuit board (not shown). The lower housing 202 also has a through slot 2021 that extends downward through the lower housing 202. The through slot 2021 is sized and shaped to accommodate the metal shielding sheet 26. The second clamping portion 262 of the metal shielding sheet 26 is clamped to the through slot, and the shielding grounding pin 263 is exposed at the bottom of the lower housing 202. The shielding sheet 26 shields the transmission paths on both sides, preventing crosstalk between the two transmission paths.

[0060] The lower shell 202 is integrally formed with the pin terminal 25, and the pin terminal 25 includes a plurality of first pin terminals 251 and second pin terminals 252. Part of the first pin terminals 251 and part of the second pin terminals 252 form a first group of pin terminals 51, which are arranged on the side below the first filter module 241 and are electrically connected to one end of the first filter module 241. Another part of the first pin terminals 251 and another part of the second pin terminals 252 form a second group of pin terminals 52, which are arranged on the side below the second filter module 252 and are electrically connected to one end of the second filter module 252. The first pin terminal 251 includes a first contact portion 31 electrically connected to the filter module 24, a first mounting portion 33 for mounting to an external circuit board, and a first intermediate portion 32 connecting the first contact portion 31 and the first mounting portion 33. The second pin terminal 252 includes a second contact portion 41 electrically connected to the filter module 24, a second mounting portion 43 for mounting to an external circuit board, and a second intermediate portion 42 connecting the second contact portion 41 and the second mounting portion 43. The first mounting portion 33 and the second mounting portion 43 have a fisheye structure. The advantage is that the mounting portion of the fisheye structure does not need to be soldered, but only needs to be pressed and installed to the external circuit board. The crimping is reliable and has strong holding force, and the signal transmission performance is good. The first intermediate portion 32 and the second intermediate portion 42 have different shapes. The first intermediate portion 32 includes a first vertical portion 321 extending downward and perpendicular to the first contact portion 31, a first horizontal portion 322 extending downward and perpendicular to the first vertical portion 321 from the first vertical portion 321, and a first extending portion 323 extending downward and perpendicular to the first horizontal portion 322 from the first horizontal portion 322. The second intermediate portion 42 includes a second horizontal portion 421 extending rearward and parallel to the second contact portion, and a second vertical portion 422 extending downward and perpendicular to the second horizontal portion 421 from the second horizontal portion 421. The different intermediate portions result in different longitudinal heights for the first contact portion 31 of the first pin terminal 251 and the second contact portion 41 of the second pin terminal 252, which are adjacent to each other in the first and second groups of pin terminals 51 and 52. The first mounting portion 33 and the second mounting portion 43 are staggered in two rows. This design increases the winding density of the enameled wire of the filter module 24 and the pin terminals 25.

[0061] Part of the intermediate terminals 23 forms a first group of intermediate terminals 61, which are arranged on the side above the first filter module 241 and are electrically connected to the other end of the first filter module 241. Another part of the intermediate terminals 23 forms a second group of intermediate terminals 62, which are arranged on the side above the second filter module 242 and are electrically connected to the other end of the second filter module 242. The adjacent intermediate terminals 23 in the first group of intermediate terminals 61 and the second group of intermediate terminals 62 are staggered in two rows and installed in the corresponding terminal holes 231 of the top wall 211 of the upper shell. Similarly, such a design also increases the winding density of the enameled wire of the filter module 24 on the intermediate terminals 23.

[0062] It is worth noting that the two-piece housing is suitable for both fisheye-shaped pin terminals and ordinary through-hole mounting pin terminals.

[0063] The present invention forms an insulating carrier by assembling a two-piece shell, thereby achieving a stable combination of the insulating carrier and the fisheye structure pin terminal, and has stable quality, lower cost, small equipment investment, and can be achieved by only conventional molds and dies.

[0064] However, it will be understood that although many features and advantages of the invention have been mentioned in the foregoing description, including certain details of structure and function, this disclosure is illustrative and many details may be varied, particularly in the shape, size and arrangement of parts within the scope of the principles expressed in the broad general meaning of the terms as expressed in the appended claims.

Claims

1. An electrical connector capable of being mounted on an external circuit board, the electrical connector comprising an insulating body and a terminal module assembled with the insulating body, the terminal module comprising a mating terminal capable of mating with a mating plug, an insulating carrier having a receiving cavity, an intermediate terminal fixed to one side of the insulating carrier and electrically connected to the mating terminal, a pin terminal fixed to the other side of the insulating carrier for mounting on an external circuit board, and a filter module received in the receiving cavity of the insulating carrier and electrically connected to the intermediate terminal and the pin terminal, characterized in that: The insulating carrier is a two-piece shell, the intermediate terminal is fixed in one shell, and the pin terminal is fixed in the other shell. The two-piece shell includes an upper shell and a lower shell, and the upper shell and the lower shell are assembled together to form a receiving cavity. The intermediate terminal is installed in the upper shell, and the pin terminal is integrally formed on the lower shell. The electrical connector includes a circuit board electrically connecting the docking terminal and the intermediate terminal. The circuit board is arranged above the upper shell and only one is arranged.

2. The electrical connector according to claim 1, wherein: The pin terminal includes a contact portion electrically connected to the filter module, a mounting portion for mounting on an external circuit board, and a middle portion connecting the contact portion and the mounting portion, wherein the mounting portion is a fisheye structure.

3. The electrical connector according to claim 2, wherein: The circuit board is arranged horizontally, the butting terminals are located at the front of the circuit board, and the insulating carrier is located at the bottom of the circuit board.

4. The electrical connector according to claim 3, wherein: The upper shell includes a roughly flat top wall and an intermediate wall extending downward from below the top wall. The lower shell is roughly flat. The upper shell and the lower shell are assembled in the up and down directions to form a receiving cavity on both sides. The filter module includes a first filter module received in the receiving cavity on one side and a second filter module received in the receiving cavity on the other side opposite thereto.

5. The electrical connector according to claim 4, wherein: The terminal module further includes a metal shielding sheet formed on the middle wall. The lower shell is provided with a through slot. The metal shielding sheet extends downward through the through slot and can be connected to an external circuit board.

6. The electrical connector according to claim 5, wherein: The pin terminals include multiple first pin terminals and multiple second pin terminals, part of the first pin terminals and part of the second pin terminals form a first group of pin terminals arranged on one side of the first filter module and electrically connected to one end of the first filter module, another part of the first pin terminals and another part of the second pin terminals form a second group of pin terminals arranged on the other side of the second filter module and electrically connected to one end of the second filter module, the middle parts of the first pin terminal and the second pin terminal have different shapes, so that the contact parts of the first pin terminal and the second pin terminal adjacent to each other in the first group of pin terminals and the second group of pin terminals have different longitudinal heights, and the mounting parts are staggered into two rows.

7. The electrical connector according to claim 5, wherein: Part of the intermediate terminals forms a first group of intermediate terminals which are arranged on the side of the first filter module and are electrically connected to the other end of the first filter module. Another part of the intermediate terminals forms a second group of intermediate terminals which are arranged on the other side of the second filter module and are electrically connected to the other end of the second filter module. Adjacent intermediate terminals in the first group of intermediate terminals and the second group of intermediate terminals are staggered and arranged in two rows.

8. The electrical connector according to claim 1, wherein: The pin terminal is a through-hole mounting structure.

Images