Electric connector

Abstract

An electric connector comprises an insulation body, a wave absorbing member and a terminal module, the terminal module comprises an insulator and at least one row of terminals fixed on the insulator, the row of terminals comprises signal terminals and grounding terminals, the insulation body comprises two opposite side walls, a butt joint groove located between the side walls, and a mounting groove, and the butt joint groove is located between the side walls. The wave absorbing piece is formed in the mounting groove, or after the wave absorbing piece is formed in the insulator, the insulator of the terminal module is installed and fixed in the mounting groove, and the terminal extends into the butt joint groove. According to the technical scheme, after the wave absorbing piece is formed in the mounting groove or formed in the insulator, the terminal module is mounted in the mounting groove, the procedure of independently mounting the wave absorbing piece and related auxiliary parts are omitted, the material and labor cost is reduced, and the production efficiency is improved. Meanwhile, the wave absorbing piece is combined with the insulation body or the insulator more tightly, and the problem of displacement possibly generated in a vibration environment is solved.

Description

Technical Field

[0001] The present application relates to the technical field of communication equipment, and in particular to an electrical connector. Background Art

[0002] Reducing resonance in high-frequency signal transmission is becoming increasingly challenging. Related technologies typically incorporate magnetic materials within connectors. Magnetic materials (such as ferrites) convert high-frequency electromagnetic wave energy into heat through magnetic losses (eddy current loss and hysteresis loss), reducing radiated and conducted noise. Alternatively, ferrite beads or rings are used on differential lines or cables to suppress common-mode currents (such as crosstalk in USB and HDMI). However, adding magnetic materials to connectors often requires adding new assembly steps, which increases assembly time and the connector assembly process. Summary of the Invention

[0003] In view of this, the present application provides an electrical connector that can reduce the impact of the absorbing component on the connector assembly process.

[0004] An embodiment of the present application provides an electrical connector, comprising an insulating body, an absorbing member, and a terminal module. The terminal module comprises an insulator and at least one row of terminals fixed to the insulator, wherein the row of terminals comprises signal terminals and ground terminals. The insulating body comprises two opposing side walls, a docking groove located between the side walls, and a mounting groove. The absorbing member is molded in the mounting groove, or after the absorbing member is molded on the insulator, the insulator of the terminal module is installed and fixed in the mounting groove, and the terminals extend into the docking groove.

[0005] In some optional embodiments, the absorbing member is formed in the mounting groove, and the absorbing member includes a plurality of vertical bars, a horizontal bar connecting the plurality of vertical bars together, and a plurality of fixing columns, the plurality of fixing columns are buried in the corresponding side walls, and the plurality of vertical bars correspond one to one to the grounding terminals.

[0006] In some optional embodiments, the fixing post extends from the vertical bar portion in a direction away from the ground terminal, and the size of the end thereof becomes larger.

[0007] In some optional embodiments, the vertical strips are exposed on the inner wall surface of the side wall.

[0008] In some optional embodiments, the horizontal bar portion is integrally connected to the lower ends of the plurality of vertical bar portions, and protrudes out from the outer wall surface of the corresponding vertical bar portion in a direction away from the ground terminal.

[0009] In some optional embodiments, a plurality of clearance grooves are provided on the outer side surface of the insulator, the clearance grooves correspond to the grounding terminals one by one, and the vertical strips are clamped in the corresponding clearance grooves.

[0010] In some optional embodiments, the inner wall surface of the clearance groove is provided with a notch recessed toward the ground terminal, and an insulating material of an insulator is provided between the clearance groove and the corresponding ground terminal.

[0011] In some optional embodiments, the absorbing member is formed on the insulator, and the outer side surface of the insulator is provided with a plurality of fixing bosses spaced apart along the length direction of the insulator, and the absorbing member surrounds and is tightly attached to the outer circumference of each fixing boss.

[0012] In some optional embodiments, the terminal includes a contact portion and a pin portion located at both ends thereof, and a middle portion connecting the contact portion and the pin portion, the middle portion includes a fixed portion fixed to the insulator and an elastic arm extending from the insulator, the contact portion is formed by extending from the elastic arm, and the middle portion of the grounding terminal is smaller than the width of the signal terminal.

[0013] In some optional embodiments, the contact portions of adjacent terminals have the same pitch, and the pin portions of adjacent terminals have the same pitch.

[0014] The electrical connector provided in the embodiment of the present application adopts a technical solution in which the absorbing member is formed into the mounting groove or the insulator, and the terminal module is then installed in the mounting groove. This eliminates the process of separately installing the absorbing member and related auxiliary components, reduces material and labor costs, and improves production efficiency. At the same time, the absorbing member is more tightly combined with the insulating body or the insulator, which improves the displacement problem that may occur in the absorbing member under a vibration environment. In addition, the absorbing member is directly arranged near the terminal module, which can more effectively suppress the resonance and common-mode noise in high-frequency signal transmission and improve signal integrity. This design simplifies the connector structure and improves manufacturing efficiency while ensuring the quality of high-frequency signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the electrical connector and the circuit board according to the first embodiment of the present application, wherein the electrical connector is mounted on the circuit board.

[0016] Figure 2 yes Figure 1 3D exploded view of .

[0017] Figure 3 yes Figure 1 A sectional perspective view of .

[0018] Figure 4 yes Figure 2 Exploded three-dimensional diagram of the insulating body and the absorbing component.

[0019] Figure 5 yes Figure 4 Enlarged stereogram of part A.

[0020] Figure 6 yes Figure 2Enlarged stereogram of part B.

[0021] Figure 7 This is a three-dimensional diagram of the electrical connector and the circuit board of the second embodiment of the present application, wherein the electrical connector is installed on the circuit board, and the metal shell and the insulating body are hidden, so as to facilitate the display of the relationship between the absorbing component and the insulator.

[0022] Figure 8 yes Figure 7 A three-dimensional exploded view of the device, in which the metal shell and insulating body are not hidden.

[0023] Description of main component symbols 001. Electrical connector; 10. Insulating body; 11. Side wall; 12. Docking groove; 13. Mounting groove; 14. External mounting portion; 20. Absorber; 21. Vertical bar portion; 22. Horizontal bar portion; 23. Fixing column; 231. Connecting portion; 232. Blocking portion; 30. Terminal module; 31. Insulator; 311. Giving way groove; 3111. Recess; 312. Fixing boss; 32. Terminal; S. Signal terminal pair; S1. Signal terminal; G. Ground terminal; 321. Contact portion; 3211. Contact point; 322. Middle portion; 3221. Fixing portion; 3222. Elastic arm; 323. Pin portion; 40. Metal housing; 41. Soldering foot; 42. Card slot; 50. Grounding member; 51. Pin; 002. Circuit board; d1. Conductive pad; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0024] The following describes some embodiments of the present application in detail with reference to the accompanying drawings. Unless there is a conflict, the features in the following embodiments and examples can be combined with each other.

[0025] See also Figure 1 An embodiment of the present application provides an electrical connector 001, which is arranged on a circuit board 002 and realizes pluggable electrical connection and mechanical fixation by clamping the contacts of the docking components. It is commonly used for the installation and signal transmission of modular components such as memory and expansion cards.

[0026] See also Figure 2 and Figure 3 The electrical connector 001 includes an insulating body 10, an absorber 20, and a terminal module 30. The terminal module 30 includes an insulator 31 and at least one row of terminals 32 fixed to the insulator 31. The terminal row 32 includes multiple signal terminal pairs S and two ground terminals G located on either side of each signal terminal pair S. The signal terminal pairs S include two adjacent signal terminals S1, which form a differential pair for high-speed signal transmission. In this embodiment, the terminals 32 are arranged in two rows, with the two rows of terminals 32 facing each other along a first direction X.

[0027] Each terminal 32 includes a contact portion 321 and a pin portion 323 at opposite ends, and a middle portion 322 connecting the contact portion 321 and the pin portion 323. The contact portion 321 has a contact point 3211 for contacting a mating component. The circuit board 002 has multiple conductive pads d1, and the pin portions 323 press against corresponding conductive pads d1 one by one, thereby establishing a conductive path.

[0028] The middle portion 322 includes a fixed portion 3221 and a resilient arm 3222. The fixed portion 3221 is fixed to the insulator 31. The resilient arm 3222 extends upward from the fixed portion 3221, out of the insulator 31. The contact portion 321 further extends upward from the resilient arm 3222. The contact portions 321 of adjacent terminals 32 have the same spacing, and the pin portions 323 of adjacent terminals 32 have the same spacing. The contact portions 321 and pin portions 323 of adjacent terminals 32 are arranged with equal spacing, ensuring impedance consistency between the two signal terminals S1.

[0029] The insulating body 10 includes two sidewalls 11 facing each other along a first direction X, a mating slot 12 between the sidewalls 11, and a mounting slot 13. The mating slot 12 is located above the mounting slot 13. The absorber 20 is formed in the mounting slot 13, and the terminal 32 extends into the mating slot 12.

[0030] By directly molding the absorber 20 into the mounting slot 13, the separate installation process and associated auxiliary components for the absorber 20 are eliminated, reducing material and labor costs and improving production efficiency. Furthermore, the absorber 20 is more tightly integrated with the insulating body 10, mitigating potential displacement issues that may occur in vibration environments. Furthermore, the absorber 20 is positioned directly near the terminal module 30, effectively suppressing resonance and common-mode noise during high-frequency signal transmission, thereby improving signal integrity. This design simplifies the connector structure and improves manufacturing efficiency while ensuring high-frequency signal transmission quality.

[0031] In this embodiment, the absorbing member 20 is disposed separately from the ground terminal G. The absorbing member 20 can absorb high-frequency electromagnetic interference and resonant energy, reducing noise and crosstalk in signal transmission. In another embodiment, the absorbing member 20 is partially in contact with the ground terminal G.

[0032] In this embodiment, the absorbing member 20 is formed on the inner wall of the installation groove 13 by a double-shot molding process. In other embodiments, the absorbing member 20 is formed on the inner wall of the installation groove 13 by a secondary molding process.

[0033] See also Figure 3 and Figure 4In some embodiments, the absorbing member 20 includes a plurality of vertical bars 21, a horizontal bar 22 connecting the vertical bars 21, and a plurality of fixing posts 23. The vertical bars 21 extend upward from the horizontal bar 22, and the vertical bars 21 correspond one to one with the ground terminals G. The fixing posts 23 are embedded in the corresponding sidewalls 11. In this embodiment, the fixing posts 23 extend from the vertical bars 21 in a direction away from the ground terminals G. In other embodiments, the fixing posts 23 extend from the horizontal bar 22 in a direction away from the ground terminals G.

[0034] See also Figure 4 and Figure 5 , the size of the end of the fixing post 23 becomes larger. In this embodiment, the fixing post 23 includes a connecting portion 231 and a blocking portion 232. The connecting portion 231 connects the blocking portion 232 and the vertical bar portion 21. The cross-sectional area of ​​the connecting portion 231 along the extension direction of the fixing post 23 is smaller than the cross-sectional area of ​​the blocking portion 232 along the extension direction of the fixing post 23. Correspondingly, the side wall 11 is provided with a small hole and a large hole of different cross-sectional areas. The large hole is located on the side of the small hole away from the ground terminal G and is interconnected. The fixing post 23 is formed and clamped within the small hole and the large hole.

[0035] In other embodiments, the outer circumference of the fixing post 23 is in an inverted cone shape, and the size of the end of the fixing post 23 gradually increases. Correspondingly, the side wall 11 is provided with a hole with a gradually increasing cross-sectional area, and the fixing post 23 is formed and clamped in the hole.

[0036] In some embodiments, the vertical strips 21 are exposed on the inner wall surface of the side wall 11 and are directly disposed toward the middle portion 322 of the ground terminal G, which can more effectively suppress resonance and common-mode noise in high-frequency signal transmission and improve signal integrity.

[0037] In some embodiments, the horizontal bar portion 22 is integrally connected to the lower ends of the plurality of vertical bar portions 21 and protrudes out from the outer wall surface of the corresponding vertical bar portion 21 in a direction away from the ground terminal G.

[0038] In some embodiments, the material of the wave absorbing member 20 may be at least one of manganese zinc ferrite, nickel zinc ferrite, amorphous alloy (such as Fe-Si-B), nanocrystalline (Fe-Cu-Nb-Si-B), and a mixed material of magnetic powder and polymer.

[0039] See also Figure 2 and Figure 6 In some embodiments, a plurality of clearance grooves 311 are provided on the outer side surface of the insulator 31, and the clearance grooves 311 correspond one-to-one to the ground terminals G. The vertical bar portions 21 are clamped in the corresponding clearance grooves 311, which is conducive to positioning the terminal module 30 through the cooperation between the clearance grooves 311 and the vertical bar portions 21.

[0040] In some embodiments, the inner wall surface of the recess 311 is provided with a notch 3111 that is recessed toward the ground terminal G. The vertical bar portion 21 is arranged toward the middle portion 322 of the ground terminal G through the notch 3111, thereby reducing the barrier effect of the insulating material and more effectively suppressing resonance and common-mode noise in high-frequency signal transmission.

[0041] The insulating material of the insulator 31 is separated from the corresponding ground terminal G by the recess 311 , thereby separating the ground terminal G from the vertical bar portion 21 .

[0042] See also Figure 1 and Figure 2 In some embodiments, the electrical connector 001 includes a metal housing 40 made of a conductive material. The metal housing 40 not only provides a shielding effect but also provides a locking and anti-mistakable function during docking. The metal housing 40 has solder pins 41 extending from the side of the circuit board 002 and is secured to the circuit board 002 by soldering. The insulating body 10 is disposed within the metal housing 40. A slot 42 is provided on the side of the metal housing 40. The side of the insulating body 10 also includes an external mounting portion 14, which is secured to the slot 42.

[0043] See also Figure 3 In some embodiments, the electrical connector 001 includes a grounding member 50 . The grounding member 50 is disposed within the insulator 31 corresponding to one row of terminals 32 and is located on the side of one row of terminals 32 facing another row of terminals 32 . The grounding member 50 is stamped with multiple pins 51 . Each ground terminal G in the same row is connected to at least one pin 51 , thereby interconnecting the multiple ground terminals G and forming a wraparound layout for the signal terminal pairs S, thereby reducing near-end crosstalk between the signal terminal pairs S.

[0044] See also Figure 7 and Figure 8 , which shows the second embodiment. And with reference to Figure 1 The present embodiment provides another electrical connector 001. This embodiment differs from the previous embodiments in that the absorbing member 20 is molded onto the insulator 31 before the insulator 31 of the terminal module 30 is installed and secured within the mounting slot 13. By directly molding the absorbing member 20 onto the insulator 31, the separate installation process and associated auxiliary components for the absorbing member 20 are eliminated, reducing material and labor costs and improving production efficiency. Furthermore, the absorbing member 20 is more tightly bonded to the insulator 31, mitigating potential displacement of the absorbing member 20 in a vibrating environment.

[0045] In this embodiment, the absorbing member 20 is formed on the outer wall of the insulator 31 by a double-shot molding process. In other embodiments, the absorbing member 20 is formed on the outer wall of the insulator 31 by a secondary molding process.

[0046] The outer side of the insulator 31 is provided with a plurality of fixing bosses 312 spaced apart along the length direction of the insulator 31 . The absorbing member 20 surrounds and is in close contact with the outer circumference of each fixing boss 312 , thereby improving the connection stability between the absorbing member 20 and the insulator 31 .

[0047] The middle portion 322 includes a fixed portion 3221 and a resilient arm 3222. The fixed portion 3221 is fixed to the insulator 31. The resilient arm 3222 extends upward from the fixed portion 3221 and out of the insulator 31. The contact portion 321 further extends upward from the resilient arm 3222. The contact portions 321 of adjacent terminals 32 have the same spacing, and the pin portions 323 of adjacent terminals 32 have the same spacing. The width of the middle portion 322 of the ground terminal G is smaller than that of the signal terminal S1.

[0048] In addition, those skilled in the art should recognize that the above embodiments are merely intended to illustrate the present application and are not intended to limit the present application. As long as they are within the spirit of the present application, appropriate changes and modifications to the above embodiments are within the scope of disclosure of the present application.

Claims

1. An electrical connector comprising an insulating body, an absorbing member, and a terminal module, wherein the terminal module comprises an insulating body and at least one row of terminals fixed to the insulating body, wherein the row of terminals comprises signal terminals and ground terminals, and the insulating body comprises two opposing side walls, a docking groove located between the side walls, and a mounting groove, wherein: The absorbing member is formed in the installation groove, or after the absorbing member is formed on the insulator, the insulator of the terminal module is installed and fixed in the installation groove, and the terminal extends into the docking groove.

2. The electrical connector according to claim 1, wherein: The absorbing member is formed in the mounting groove, and includes a plurality of vertical bars, a horizontal bar connecting the plurality of vertical bars, and a plurality of fixing columns. The plurality of fixing columns are embedded in the corresponding side walls, and the plurality of vertical bars correspond to the grounding terminals one by one.

3. The electrical connector according to claim 2, wherein: The fixing column extends from the vertical bar portion in a direction away from the ground terminal, and the size of the end thereof becomes larger.

4. The electrical connector according to claim 2, wherein: The vertical strips are exposed one by one on the inner wall surface of the side wall.

5. The electrical connector according to claim 4, wherein: The horizontal bar portion is integrally connected to the lower ends of the plurality of vertical bar portions and protrudes out from the outer wall surface of the corresponding vertical bar portion in a direction away from the ground terminal.

6. The electrical connector according to claim 2, wherein: A plurality of clearance grooves are provided on the outer side surface of the insulator, and the clearance grooves correspond to the ground terminals one by one, and the vertical strips are clamped in the corresponding clearance grooves.

7. The electrical connector according to claim 6, wherein: The inner wall surface of the clearance groove is provided with a notch sunken toward the ground terminal, and the insulating material of the insulator is spaced between the clearance groove and the corresponding ground terminal.

8. The electrical connector according to claim 1, wherein: The absorbing member is formed on the insulator. The outer side surface of the insulator is provided with a plurality of fixing bosses spaced apart along the length direction of the insulator. The absorbing member surrounds and is tightly attached to the outer peripheral surface of each fixing boss.

9. The electrical connector according to claim 8, wherein: The terminal includes a contact portion and a pin portion located at both ends thereof, and a middle portion connecting the contact portion and the pin portion. The middle portion includes a fixed portion fixed to the insulator and an elastic arm extending from the insulator. The contact portion is formed by extending from the elastic arm. The width of the middle portion of the ground terminal is smaller than the width of the signal terminal.

10. The electrical connector according to claim 9, wherein: The contact portions of adjacent terminals have the same pitch, and the pin portions of adjacent terminals have the same pitch.

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