Electrical connector

Abstract

The application provides an electric connector for mounting to a circuit board to plug an electronic card, which comprises an elongated insulating body, two rows of conductive terminals and a grounding member. The insulating body comprises oppositely arranged upper and lower side walls and a mating slot penetrating forward between the upper and lower side walls. The two rows of conductive terminals are respectively held by the upper and lower side walls and comprise contact portions extending into the mating slot. The conductive terminals comprise a plurality of grounding terminals. After the electric connector is mounted to the circuit board, the upper and lower side walls are respectively located on the upper and lower sides of the circuit board. The grounding member is arranged on the upper side wall and in contact with the grounding terminals, so that interference signals can be effectively shielded, near-end crosstalk can be reduced, and high frequency and high speed can be achieved.

Description

Technical Field

[0001] This invention relates to electrical connectors, and more particularly to an electrical connector for transmitting high-speed signals. Background Technology

[0002] For relevant prior art, please refer to the electrical connector disclosed in Chinese patent application CN213242871U, which includes an insulating body, a plurality of upper row terminals and a plurality of lower row terminals. The insulating body includes an upper sidewall, a lower sidewall, and a mating groove located between the upper and lower sidewalls and extending forward. The upper row terminals are fixed to the upper sidewall and include an upper contact portion extending into the mating groove and a rear pin extending out of the insulating body. The lower row terminals are fixed to the lower sidewall and include a lower contact portion extending into the mating groove and a front pin extending out of the insulating body. The lower surface of the lower sidewall is a circuit board mounting surface. The electrical connector is mounted on a circuit board, which is not conducive to saving space on the circuit board. In addition, the electrical connector does not have a grounding component, and the shielding effect of signal crosstalk is poor.

[0003] Therefore, it is necessary to provide an improved electrical connector to address the aforementioned problems. Utility Model Content

[0004] The technical solution to be solved by this invention is to provide an electrical connector that helps to improve crosstalk between differential signal pairs.

[0005] This application provides a technical solution: an electrical connector for mounting to a circuit board to insert an electronic card. The electrical connector includes a longitudinally elongated insulating body, two rows of conductive terminals, and a grounding component. The insulating body includes an upper sidewall and a lower sidewall disposed opposite to each other, and a mating groove located between the upper and lower sidewalls and extending forward. The two rows of conductive terminals are respectively fixed to the upper and lower sidewalls and include contact portions extending into the mating groove. The conductive terminals include a plurality of grounding terminals. After the electrical connector is mounted to the circuit board, the upper and lower sidewalls are located on the upper and lower sides of the circuit board, respectively. The grounding component is disposed on the upper sidewall and contacts the grounding terminals.

[0006] Compared to existing technologies, the electrical connector of this invention is installed on the circuit board with its upper and lower sidewalls located on the upper and lower sides of the circuit board, respectively, which helps to save space on the circuit board. In addition, it is provided with a grounding component that contacts the grounding terminal, which can effectively reduce near-end crosstalk, optimize the high-frequency performance of the electrical connector, and achieve high frequency and high speed. Attached Figure Description

[0007] Figure 1 This is a perspective view of the electrical connector mounted on the circuit board.

[0008] Figure 2 This is a three-dimensional view of the electrical connector used in this creation from another angle.

[0009] Figure 3 for Figure 2 A three-dimensional image viewed from below.

[0010] Figure 4 for Figure 1 A 3D disassembly diagram.

[0011] Figure 5 for Figure 4 Another perspective of the three-dimensional disassembly diagram.

[0012] Figure 6 For along Figure 2 A cross-sectional view along line AA in the middle.

[0013] Figure 7 for Figure 2 The three-dimensional view with the insulation removed shows the positional relationship between the conductive terminals and the grounding component.

[0014] Figure 8 For along Figure 2 A cross-sectional view along the BB line.

[0015] Component Symbol Explanation Electrical connector 100; Insulating body 10, Upper sidewall 11, mounting groove 110, plate receiving part 111, mounting surface 112, mounting post 113, Lower sidewall 12, mating groove 13; Conductive terminal 20, Upper terminal block 21, upper connecting part 211, upper contact part 212, upper pin 213, retaining section 214 215 barbs, 216 inclined portion, 217 abutting portion Lower terminal block 22, lower connecting part 221, lower contact part 222, lower pin 223 Vertical part 224, horizontal part 225, insertion part 226. Grounding terminal G, signal terminal S; Grounding component 30, main body 32, flexible arm 31; Circuit board 200. Detailed Implementation

[0016] The following will combine Figures 1 to 8 The specific embodiments of this utility model are described below.

[0017] like Figure 1 As shown, the electrical connector 100 of this utility model is used to be mounted to a circuit board 200 to insert an electronic card (not shown). See also... Figures 1 to 5The electrical connector 100 includes a longitudinally elongated insulating body 10, two rows of conductive terminals 20, and a grounding element 30. The insulating body 10 includes an upper sidewall 11 and a lower sidewall 12 disposed opposite to each other, and a mating groove 13 located between the upper and lower sidewalls and extending forward. The two rows of conductive terminals 20 include upper row terminals 21 and lower row terminals 22 respectively fixed to the upper sidewall 11 and lower sidewall 12, and have contact portions extending into the mating groove 13 to contact the electronic card. Each conductive terminal 20 includes a plurality of grounding terminals G and a plurality of signal terminals S. After the electrical connector 100 is installed on the circuit board 200, the upper sidewall 11 and lower sidewall 12 are located on the upper and lower sides of the circuit board 200, respectively, in conjunction with... Figure 6 As shown, the grounding component 30 is disposed on the upper sidewall 11 and contacts the grounding terminal G, which can effectively shield the interference between signal terminal pairs, reduce near-end crosstalk, optimize SI effect, and achieve high frequency and high speed.

[0018] See Figure 7 and Figure 8 The upper row of terminals 21 includes an upper connecting portion 211 disposed on the upper sidewall 11, an upper contact portion 212 extending obliquely forward from the upper connecting portion 211 toward the mating groove 13, and an upper contact foot 213 extending rearward from the upper connecting portion 211 out of the upper sidewall. The grounding member 30 extends longitudinally and includes an elastic arm 31, which abuts against the upper connecting portion 211. Specifically, the grounding member 30 is sheet-shaped and covers the upper row of terminals 21. The grounding member 30 has at least two elastic arms 31 corresponding to each grounding terminal G. The two elastic arms 31 abut against different parts of the same grounding terminal G in the front-back direction, which can realize the impedance continuity of the conductive terminal and avoid the phenomenon of impedance abrupt change in the circuit. In this embodiment, the upper connecting part 211 includes a retaining section 214, and the retaining section 214 is provided with longitudinally protruding barbs 215 on both sides. One of the elastic arms 31 abuts against the retaining section 214, so that the elastic arm and the grounding terminal G are in contact in a wider retaining section 214, which helps to improve the stability of the contact.

[0019] like Figure 2 and Figure 5 As shown, the upper sidewall 11 is provided with a rearward-opening mounting groove 110, and the grounding member 30 is inserted into the mounting groove 110 from rear to front. The grounding member 30 includes a main body 32, and the elastic arm 31 extends obliquely from the main body 32 to the rear and downward to facilitate the smooth assembly of the grounding member 30 into the mounting groove 110.

[0020] See Figure 1 , Figure 3 , Figure 6 and Figure 8In the front-rear direction, the upper sidewall 11 extends rearward beyond the lower sidewall 12 to form a plate receiving portion 111 below the upper sidewall 11. The upper sidewall 11 includes a mounting surface 112 facing the plate receiving portion 111. Specifically, the plate receiving portion 111 is used to receive the circuit board 200 so that the electrical connector 100 is mounted to the circuit board 200 in a recessed manner, which helps to save space on the circuit board. The upper connector 213 includes an inclined portion 216 extending downward from the upper connector 211 and an abutment portion 217 extending horizontally from the inclined portion 216. The abutment portion 217 overlaps a conductive sheet (not shown) on the circuit board 200. The mounting surface 112 has downwardly protruding mounting posts 113 at both ends, and the mounting posts 113 are inserted into the circuit board 200.

[0021] like Figure 8 As shown, the lower terminal block 22 includes a lower connecting portion 221 fixed to the lower sidewall 12, a lower contact portion 222 extending forward from the lower connecting portion 221 towards the mating groove 13 at an incline, and a lower connecting foot 223 extending rearward from the lower connecting portion 221 out of the lower sidewall 12. The lower connecting foot 223 includes an upwardly extending vertical portion 224, a rearwardly extending horizontal portion 225, and a downwardly extending insertion portion 226 from the horizontal portion 225. The vertical portion 224 is located behind the mating groove 13, the horizontal portion 225 extends close to the mounting surface 112, and the insertion portion 226 is electrically connected to the circuit board 200 through a through-hole insertion method.

[0022] The above are merely preferred embodiments of this utility model and should not be construed as limiting the scope of this utility model. Any simple equivalent changes and modifications made in accordance with the claims and description of this utility model should still fall within the scope of this utility model patent.

Claims

1. An electrical connector for mounting to a circuit board to insert an electronic card, the electrical connector comprising a longitudinally elongated insulating body, two rows of conductive terminals, and a grounding component, the insulating body comprising an upper sidewall and a lower sidewall disposed opposite to each other, and a mating groove located between the upper and lower sidewalls and extending forward, the two rows of conductive terminals respectively fixed to the upper and lower sidewalls and including contact portions extending into the mating groove, the conductive terminals including a plurality of grounding terminals, characterized in that, After the electrical connector is installed on the circuit board, the upper sidewall and the lower sidewall are located on the upper and lower sides of the circuit board, respectively, and the grounding component is disposed on the upper sidewall and contacts the grounding terminal.

2. The electrical connector as described in claim 1, characterized in that: The two rows of conductive terminals include an upper row of terminals and a lower row of terminals. The upper row of terminals includes an upper connecting portion disposed on the upper sidewall, an upper contact portion extending forward from the upper connecting portion toward the mating groove, and an upper contact foot extending backward from the upper connecting portion out of the upper sidewall. The grounding member extends longitudinally and includes an elastic arm, which abuts against the upper connecting portion.

3. The electrical connector as described in claim 2, characterized in that: The upper connecting part includes a retaining section, on both sides of which are longitudinally protruding barbs, and the elastic arm abuts against the retaining section.

4. The electrical connector as described in claim 2, characterized in that: In the front-rear direction, the upper sidewall extends rearward beyond the lower sidewall to form a plate receiving portion below the upper sidewall, the upper sidewall including a mounting surface facing the plate receiving portion.

5. The electrical connector as described in claim 4, characterized in that: The upper connector includes an inclined portion extending downward from the upper connecting portion and an abutting portion extending horizontally from the inclined portion, the abutting portion overlapping a conductive sheet on the circuit board.

6. The electrical connector as described in claim 4, characterized in that: The lower terminal block includes a lower connecting portion fixed to the lower sidewall, a lower contact portion extending forward from the lower connecting portion toward the mating groove, and a lower connecting foot extending backward from the lower connecting portion out of the lower sidewall. The lower connecting foot includes an upwardly extending vertical portion, a horizontal portion extending backward from the vertical portion, and a plug-in portion extending downward from the horizontal portion.

7. The electrical connector as claimed in claim 6, characterized in that: The vertical part is located behind the docking groove, the horizontal part extends close to the mounting surface, and the plug-in part is electrically connected to the circuit board through a through-hole insertion method.

8. The electrical connector as claimed in claim 2, characterized in that: The grounding element is arranged in a sheet shape and covers the upper row of terminals. The grounding element has at least two elastic arms corresponding to each grounding terminal. The two elastic arms abut against different parts of the same grounding terminal in the front-back direction.

9. The electrical connector as claimed in claim 2, characterized in that: The upper sidewall is provided with a rearward-opening mounting groove, and the grounding member is inserted into the mounting groove from back to front.

10. The electrical connector as claimed in claim 9, characterized in that: The grounding member includes a main body, and the elastic arm extends obliquely downward from the main body.

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