Electric connector

Abstract

An electric connector comprises at least one terminal module, and the terminal module comprises a vertical insulator, a row of terminals fixed on the insulator, and a wave absorbing member made of a wave absorbing material. The insulator is provided with two opposite vertical outer side surfaces; each terminal comprises a contact part protruding out of one end of the insulator, a pin part protruding out of the other end of the insulator, and a middle part connecting the contact part and the pin part, and the middle part is vertically embedded in the insulator; one row of terminals at least comprises two adjacent signal terminal pairs and a grounding terminal located between the two signal terminal pairs, the wave absorbing piece at least partially covers the vertical outer side face of the insulator and does not make contact with the grounding terminal, and the vertical distance between the middle portions of the terminals and the opposite surfaces of the wave absorbing piece is not smaller than 0.3 mm. According to the wave absorbing piece, the electric field and the magnetic field of the terminal on the transmission path are consumed through the magnetic conductivity and the magnetic loss of the wave absorbing piece, noise is absorbed, crosstalk is improved, and meanwhile normal signals are not affected.

Description

[Technical field]

[0001] The invention discloses an electric connector. [Background technology]

[0002] U.S. Patent US7371117B2 discloses an electrical connector, which includes a signal terminal and a ground terminal. All ground terminals are connected together by an electrical loss material (such as conductive plastic) to push the resonant frequency range of the electrical connector to a higher range, so that the electrical connector meets specific transmission requirements. CN110752486B discloses an electrical connector, whose vertical terminal modules are covered with grounding plates, and the grounding plates of adjacent terminal modules are connected to each other by a laterally inserted shielding member. The shielding member can be a conductive metal, conductive plastic, or made of or including electromagnetic loss material or wave absorbing material. Then in actual development, high-frequency performance and cost are comprehensively considered, hoping to design a product that meets the requirements better. [Summary of the invention]

[0003] The technical problem to be solved by the present invention is to provide an electrical connector which can improve high frequency performance.

[0004] To achieve the above object, the present invention adopts the following technical scheme: an electrical connector, comprising at least one terminal module, the terminal module comprising a vertical insulator, a row of terminals fixed on the insulator, and an absorbing member made of an absorbing material; the insulator has two opposite vertical outer sides; the terminal comprises a contact portion protruding from one end of the insulator, a pin portion protruding from the other end of the insulator, and a middle portion connecting the contact portion and the pin portion, the middle portion being vertically buried in the insulator; a row of the terminals comprises at least two adjacent signal terminal pairs and a grounding terminal located between the two signal terminal pairs, the absorbing member at least partially covers the vertical outer side of the insulator and does not contact the grounding terminal, and the vertical distance between the middle portion of the terminal and the relative surface of the absorbing member is not less than 0.3 mm. .

[0005] Compared with the prior art, the wave absorbing member of the present invention relies on its own magnetic permeability and magnetic loss to consume the electric field and magnetic field of the terminal on the transmission path, thereby absorbing noise and improving crosstalk without affecting normal signals.

Brief Description of the Drawings

[0006] Figure 1 It is a three-dimensional diagram of the electrical connector of the present invention.

[0007] Figure 2 yes Figure 1 A partially exploded perspective view of the electrical connector shown.

[0008] Figure 3 yes Figure 2 A perspective view of the connector body shown is further exploded.

[0009] Figure 4 It is a three-dimensional diagram of a row of terminals.

[0010] Figure 5 yes Figure 4 A perspective view of the terminal shown with the insulator molded into it.

[0011] Figure 6 It is a stereoscopic image of two shielding and absorbing assemblies, one of which is disassembled.

[0012] Figure 7 This is a three-dimensional image of one of the terminal modules.

[0013] Figure 8 This is a three-dimensional image of the disassembled absorber in one of the terminal modules.

[0014] Fig. 9 is a view of a row of terminals with the shield behind them.

[0015] Fig.10 is a view of a row of terminals with a shield in front of them.

[0016] Fig.11 yes Figure 3 Cross-sectional view along dotted line AA.

[0017]

Component Symbol Description

[0018] Electrical connector 100 Contact part 41 Frame 10 Middle part 42 Installation section 11 Pin 43 Connector body 20 Horizontal portion 44 Docking slot 201 Inclined portion 45 Docking frame 21 Near surface 47 Terminal module 22 Shielding member 50 Fixing members 231, 232, 233 Shielding portion 51 Insulator 30 Grounding portion 52 Vertical outer side 31 Short bridge 53 Conductive terminal 40 Absorber 60 Signal terminal pair 40S Hole 61 Ground terminal 40G Inner surface 62

[0019] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. [Specific implementation method]

[0020] Ginseng Figure 1 As shown in the figure, the present invention is an electrical connector 100 for connecting an EDSFF module (Enterprise and Datacenter Small Form Fact Module) with a circuit board, and its structure is an orthogonal connector, that is, the corresponding card module and the circuit board are in an orthogonal mode, or perpendicular to each other, and the electrical connector 100 is installed on the circuit board. Figure 1-3As shown, in this embodiment, the electrical connector 100 includes a frame 10 and a connector body 20. The frame 10 is sleeved on the front end of the connector body 20 and has a mounting portion 11 for mounting the electrical connector on a circuit board (not shown). The connector body 20 is provided with a docking groove 201. The front end of the conductive terminal 40 protrudes into the docking groove 201 to make contact with the inserted card module (not shown) to achieve electrical connection. The connector body 20 includes an insulating docking frame 21 and two terminal modules 22. The two terminal modules 22 are assembled together and then fixed by a plurality of fixing members 231, 232, and 233, and then inserted into the docking frame 21. The docking groove 201 is formed on the docking frame 21, and the front end of the conductive terminal 40 is inserted into the docking frame 21. The structures of the two terminal modules are roughly the same and are bilaterally symmetrical. The fixing member 232 fixes the two terminal modules to each other at the bottom, the fixing member 233 fixes the two terminal modules to each other at the back, and the fixing member 231 fixes the two terminal modules to each other at the top, and fixes the terminal module to the docking frame 21. In order to improve the high-frequency performance of the terminal module, the present invention adds a shielding member 50 made of a metal plate and an absorbing member 60 made of an absorbing material to the terminal module.

[0021] The terminal module 22 is described in detail below. Figure 4-7 The terminal module 22 includes an insulator 30, a row of terminals 40 fixed on the insulator, a metal shielding member 50 and an absorber 60. The terminal 40 includes a contact portion 41 protruding from one end of the insulator 30, a pin portion 43 protruding from the other end of the insulator, and a middle portion 42 connecting the contact portion and the pin portion. The middle portion 42 is at least partially buried in the insulator 30, and the insulator is partially hollowed out so that the middle portion 42 of the terminal is partially exposed to the outside. After the terminals 40 are arranged in a row, the insulator 30 fixes the middle portion 42 of the row of terminals by injection molding, and the contact portion 41 and the pin portion 43 are exposed outside the insulator 30. The insulator has two opposite vertical outer sides, and a row of terminals 40 is located between the two outer sides. A row of the terminals includes at least two adjacent signal terminal pairs 40S and a ground terminal 40G located between the two signal terminal pairs. Each signal terminal pair consists of two adjacent signal terminals and transmits differential signals. In this embodiment, a row of the terminals 40 includes four pairs of signal terminals 40S and a ground terminal 40G arranged at intervals from each other, and other terminals can be defined as needed, such as detection terminals, power terminals or others. Figure 4 In a row of terminals, the contact portion 41 has the same structure and is located in the same plane; the pin portion 43 has the same structure and is fisheye-shaped; the structure of the middle portion 42 has changed, and the middle portion of the signal terminal has become significantly narrower. In a pair of signal terminals, the edges adjacent to each other extend from the contact portion without change, and the edges away from each other are suddenly concave near the contact portion 41, making the middle portion thinner.

[0022] The shielding member 50 includes a shielding portion 51 located on the side of the signal terminal pair 40S and a grounding portion 52 abutting against the grounding terminal 40G. The absorbing material 60 at least partially covers the outside of the shielding member, that is, it is located on the other side of the shielding member 50 relative to the terminal 40, and the absorbing member 60 does not contact the grounding terminal 40G. The shielding portion 51 is used to improve crosstalk; the absorbing member 60 has magnetic permeability and magnetic loss, and relies on its own magnetic permeability and magnetic loss to consume the electric field and magnetic field of the terminal on the transmission path to improve crosstalk. In this embodiment, the two shielding portions 51 are spaced apart from each other and connected to each other by a plurality of short bridge portions 53. The shielding portions 51 correspond to the signal terminal pair 40S one by one, and the grounding terminal has no shielding portion 51 one by one. The plurality of grounding portions 52 extend from the corresponding short bridge portions 53 and abut against different parts of the same grounding terminal, thereby realizing multiple contact points, shortening the length of the resonance cavity, and thus improving high-frequency performance.

[0023] In this embodiment, the insulator 30 is in the shape of a vertical plate, and a row of terminals 40 are arranged in the vertical direction. It can be seen that the length of the terminals gradually shortens from top to bottom. When viewed from top to bottom, the contact portions 41 are located in the same plane and are aligned with each other. The middle portions 42 are located in the same plane, but their lengths gradually shorten. When viewed from front to back, the pin portions 43 are aligned with each other. In this embodiment, a row of the terminals 40 includes four pairs of signal terminal pairs 40S arranged at intervals from each other, and a grounding terminal 40G is spaced between adjacent signal terminal pairs. A grounding terminal 40G is provided on both sides of each signal terminal pair 40S. The shielding member 50 includes three shielding portions 51 and grounding portions 52 located on both sides of each shielding portion. The three shielding portions 51 are respectively located on the three signal terminal pairs from top to bottom, and the signal terminal pair located at the bottom is not covered by the shielding portion 51. Figure 9-10 The positional relationship between the shielding member 50 and a row of terminals 40 is shown. Since the bottom signal terminal pair is shorter, the electrical requirements can be met even if it is not covered with the shielding portion 51. In other embodiments, the bottom fourth signal terminal pair may also be covered with a shielding portion. Adjacent shielding portions are connected by a plurality of short bridge portions 43. In this embodiment, the shape of the shielding member includes a horizontal portion 44 and an inclined portion 45 due to the formation of matching terminals. Short bridge portions 53 are provided at the front and rear ends of the shielding member. Short bridge portions 53 are provided at the corners of the horizontal portion and the inclined portion. Furthermore, a short bridge portion 53 is provided at the horizontal portion, and two short bridge portions 53 are provided at the inclined portion. The grounding portion 52 extends forward at the front end of the short bridge portion and abuts against the grounding terminal. In this embodiment, the absorbing member 60 covers four pairs of signal terminal pairs 40S. The shielding member 50 is attached to the vertical outer side surface 31 of the insulator 30, and the absorbing member 60 is attached to the outer side surface of the shielding member.

[0024] In this embodiment, each of the grounding portions 52 is fixed to the corresponding grounding terminal 40G by laser spot welding. The wave absorbing member 60 is provided with a plurality of laterally penetrating holes 61, which correspond one to one with the corresponding grounding portions 52 for passing through the spot welding. The shielding member 50 is pressed by a jig so that its grounding portion 52 is tightly abutted against the grounding terminal 40G, and then the two are welded by spot welding, so as to avoid the risk of possible poor contact between the grounding portion and the grounding terminal.

[0025] In this embodiment, the absorbing member 60 is first combined with the shielding member 50 by injection molding to form a shielding absorbing assembly, and then installed on the vertical outer side of the insulator, and then the grounding portion is welded. In other embodiments, the shielding member 50 is first assembled on the vertical outer side of the insulator 30, and the absorbing member 60 is assembled to the outer side of the shielding member after molding, or the absorbing member 60 is molded on the outer side of the shielding member 50 by injection molding. In this embodiment, a shielding absorbing assembly is provided on both sides of each terminal module 22, so as to meet the high-frequency electrical performance, especially the performance requirements of far-end crosstalk.

[0026] The absorbing member 60 is spaced a certain distance from the terminal 40 to ensure that the normal signal without interference is affected. In this embodiment, the vertical spacing distance between the absorbing member 60 and the terminal 40 is not less than 0.3 mm. Fig.11 As shown, the vertical distance between the absorbing member and the adjacent surfaces of the terminal (the inner surface 62 of the absorbing member and the adjacent surface 47 of the ground terminal) is not less than 0.3 mm, otherwise it will affect the normal signal. The inner surface 62 is a plane. At the same time, the absorbing member 60 does not cover the entire middle portion 42 of the terminal 40. In this embodiment, the absorbing member 60 covers the inclined portion 45 of the terminal, which meets the premise requirement of absorbing noise but not affecting the normal signal.

[0027] In summary, the electrical connector includes at least one terminal module, the terminal module includes a vertical insulator, a row of terminals fixed on the insulator, and an absorbing member made of absorbing material; the insulator is provided with relative vertical outer sides, the terminal includes a contact portion protruding from one end of the insulator, a pin portion protruding from the other end of the insulator, and an intermediate portion connecting the contact portion and the pin portion, the intermediate portion is vertically buried in the insulator; a row of the terminals includes at least two adjacent signal terminal pairs and a grounding terminal located between the two signal terminal pairs, the absorbing member at least partially covers one side of the insulator and does not contact the grounding terminal, and the vertical distance between the relative surfaces of the intermediate portion of the terminal and the absorbing member is not less than 0.3 mm. The electrical connector includes a shielding member made of metal material, the shielding member is provided with a grounding portion abutting against the grounding terminal; the shielding member is fixed on one side of the insulator, and the absorbing member is attached to the shielding member and at least partially covers the shielding member. In this way, the absorbing member 60 meets the prerequisite requirements of absorbing noise but not affecting normal signals.

[0028] In summary, the above are only preferred embodiments of the present invention and should not be used to limit the scope of the present invention; that is, all simple equivalent changes and modifications made according to the claims of the present invention and the contents of the present invention should still fall within the scope of the patent of the present invention.

Claims

1. An electrical connector, comprising at least one terminal module, the terminal module comprising a vertical insulator, a row of terminals fixed to the insulator, and an absorbing member made of an absorbing material; the insulator has two opposite vertical outer sides; the terminal comprises a contact portion protruding from one end of the insulator, a pin portion protruding from the other end of the insulator, and a middle portion connecting the contact portion and the pin portion, the middle portion being vertically buried in the insulator; a row of the terminals comprises at least two adjacent signal terminal pairs and a ground terminal located between the two signal terminal pairs, characterized in that: The absorbing member at least partially covers the vertical outer side surface of the insulator and does not contact the ground terminal, and the vertical distance between the middle portion of the terminal and the relative surface of the absorbing member is not less than 0.3 mm.

2. The electrical connector according to claim 1, wherein: The middle portion of the terminal includes a horizontal portion connected to the contact portion and an inclined portion extending from the horizontal portion to the pin portion, and the wave absorbing member covers the inclined portion.

3. The electrical connector according to claim 1, wherein: The electrical connector comprises a shielding member made of metal material, the shielding member is provided with a grounding portion abutting against the grounding terminal; the shielding member is fixed to the vertical outer side surface of the insulator, and the absorbing member is attached to the outer side surface of the shielding member and covers the shielding member.

4. The electrical connector according to claim 3, wherein: The shielding member includes a shielding portion located on the opposite side of the signal terminal, and the grounding terminal has no corresponding shielding portion; the two shielding portions are spaced apart from each other and connected to each other by a plurality of short bridge portions, and a plurality of grounding portions extend from the corresponding short bridge portions and abut against different positions of the same grounding terminal.

5. The electrical connector according to claim 4, wherein: Each of the grounding portions is fixed to the corresponding grounding terminal by spot welding.

6. The electrical connector according to claim 4, wherein: The middle portion of the terminal includes a horizontal portion connected to the contact portion and an inclined portion extending from the horizontal portion to the pin portion, the shielding portion covers the horizontal portion and the inclined portion, and the absorbing member covers the inclined portion but does not extend to the horizontal portion.

7. The electrical connector according to claim 3, wherein: The absorbing member is firstly injection molded on the shielding member to form a shielding absorbing assembly, and the shielding absorbing assembly is then installed on one side of the insulator, and then the grounding portion is spot welded.

8. The electrical connector according to claim 7, wherein: Each vertical outer side surface of the insulator is equipped with a shielding and absorbing assembly.

9. An electrical connector, comprising at least one terminal module, the terminal module comprising an insulator, a row of terminals fixed to the insulator, a shielding member made of a metal plate, and an absorbing member made of an absorbing material, the terminal comprising a contact portion protruding from one end of the insulator, a pin portion protruding from the other end of the insulator, and a middle portion connecting the contact portion and the pin portion, the middle portion being at least partially buried in the insulator; a row of the terminals comprising at least two adjacent signal terminal pairs and a ground terminal located between the two signal terminal pairs, characterized in that: The shielding member includes a shielding portion located on opposite sides of the signal terminal and a grounding portion abutting against the grounding terminal; the absorbing material at least partially covers the other side of the shielding member opposite to the terminal and does not contact the grounding terminal.

10. The electrical connector according to claim 9, wherein: The two shielding parts are spaced apart from each other and connected to each other by a plurality of short bridge parts. The grounding terminal has no corresponding shielding part. The plurality of grounding parts extend from the corresponding short bridge parts and abut against different parts of the same grounding terminal.

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