Electric connector

Abstract

The invention provides an electric connector which comprises an insulating body and conductive terminals fixedly held on the insulating body, the insulating body comprises a base for fixedly holding the conductive terminals, the conductive terminals are provided with a first row of conductive terminals and a second row of conductive terminals which are arranged in the transverse direction, and each row of conductive terminals is provided with a plurality of grounding terminals and signal terminals. Each conductive terminal comprises a holding part held on the base, a pin which extends out of the base from one end of the holding part and is used for being electrically connected with an external circuit board, and an elastic contact part which is formed by extending from the other end of the holding part and can be elastically deformed, and the elastic contact part is used for abutting against a butting terminal of a butting connector; the electric connector further comprises metal shielding pieces electrically connected with the grounding terminals, the inner surfaces of the conductive terminals are integrally connected by one metal shielding piece, and the outer surfaces of the conductive terminals are integrally connected by the other metal shielding piece. The grounding terminals of the electric connector are integrally connected by the metal shielding piece, so that the crosstalk resonance phenomenon between the terminals is improved.

Description

[Technical field]

[0001] The present invention relates to an electrical connector, and more particularly to an electrical connector for improving crosstalk resonance. [Background technology]

[0002] Chinese invention patent No. CN107706675B discloses an electrical connector, which includes an insulating body and a conductive terminal fixed on the insulating body, the insulating body includes a pair of side walls extending laterally, a pair of end walls connecting the side walls and a base for holding the conductive terminal, the conductive terminal includes a holding portion fixed on the base, a pin extending from one end of the holding portion to extend out of the base, and an elastic contact portion extending from the other end of the holding portion to be elastically deformable, the conductive terminals are arranged in the transverse direction, and when high-frequency signals are transmitted, crosstalk is prone to resonance.

[0003] Therefore, it is necessary to provide a new electrical connector to overcome the above-mentioned defects. [Summary of the invention]

[0004] The object of the present invention is to provide an electrical connector for improving the crosstalk resonance phenomenon.

[0005] The objective of the present invention is achieved through the following technical solutions: an electrical connector, comprising an insulating body, a conductive terminal fixed on the insulating body, the insulating body comprising a pair of side walls extending transversely, a pair of end walls connecting the side walls and a base for holding the conductive terminal, the conductive terminal having a first row of conductive terminals and a second row of conductive terminals arranged in the transverse direction, each row of the conductive terminals being provided with a plurality of grounding terminals and signal terminals, the conductive terminal comprising a holding portion fixed on the base, a pin extending from one end of the holding portion from the base for electrical connection with an external circuit board, and an elastic contact portion extending from the other end of the holding portion and elastically deformable, the elastic contact portion being used to abut against a docking terminal of a docking connector, the electrical connector also comprising a metal shielding member electrically connected to the grounding terminal, the grounding terminal having an inner surface close to the center of the electrical connector in a width direction perpendicular to the transverse direction and an outer surface opposite to the inner surface, the inner surface of the grounding terminal being integrally connected with one of the metal shielding members, and the outer surface of the grounding terminal being integrally connected with another of the metal shielding members.

[0006] Furthermore, the metal shielding member is fixed to the plurality of grounding terminals by welding.

[0007] Furthermore, the metal shielding member is formed by integrally stamping and bending a metal plate, and the metal shielding member comprises a flat plate portion electrically connected to the elastic contact portions of the plurality of grounding terminals and a connecting portion integrally connecting the flat plate portion.

[0008] Furthermore, the flat plate portion is configured as a flat plate-shaped structure to fit the surface of the ground terminal, and the connecting portion is bent and extended in a direction away from the ground terminal in the width direction.

[0009] Furthermore, the inner surface and the outer surface of each grounding terminal are electrically connected to a single flat plate portion respectively, and each connecting portion is electrically connected to the grounding terminal from the flat plate portion arranged on the same side edge, and the connecting portion is a free end extending from the flat plate portion.

[0010] Furthermore, the metal shielding sheet includes a pair of first shielding sheets respectively electrically connected to the inner surfaces of the two rows of grounding terminals and a pair of second shielding sheets respectively electrically connected to the outer surfaces of the grounding terminals, and the projections of the connecting parts of the first shielding sheet and the second shielding sheet in the width direction do not overlap.

[0011] Furthermore, the ground terminals and the signal terminals in each row of the conductive terminals are arranged alternately in a transverse direction.

[0012] Furthermore, each metal shielding sheet integrally connects the grounding terminals in the same row.

[0013] Furthermore, a pair of the side walls and a pair of the end walls are arranged to form a receiving cavity which passes through from top to bottom, and the base includes a first base having a holding portion for holding the first row of conductive terminals and a second base having a holding portion for holding the second row of conductive terminals, the first row of conductive terminals and the first base form a first module, and the second row of conductive terminals and the second base form a second module, and the first module and the second module are mounted in the receiving cavity from bottom to top after being engaged with each other.

[0014] Furthermore, the first base and the second base are both provided with mutually matching recesses and protrusions, and the first base and the second base are engaged with each other from top to bottom through the recesses and the protrusions.

[0015] Compared with the prior art, the present invention has the following beneficial effects: the inner surface and the outer surface of each row of grounding terminals are each integrally connected by a metal shielding member, the grounding terminals are electrically integrated with each other, and the connecting portion of the metal shielding member shields the signal crosstalk between the conductive terminals in the width direction of the connector, effectively improving the high-frequency performance of the electrical connector while meeting the elasticity requirements of the conductive terminals.

Brief Description of the Drawings

[0016] Figure 1 It is a three-dimensional schematic diagram of the electrical connector of the present invention.

[0017] Figure 2 yes Figure 1 A three-dimensional diagram from another perspective.

[0018] Figure 3 It is a three-dimensional exploded view of the electrical connector of the present invention.

[0019] Figure 4 yes Figure 3 Another perspective exploded view.

[0020] Figure 5 It is a three-dimensional exploded view of the conductive terminal and the base of the present invention.

[0021] Figure 6 It is a side view of the conductive terminal and the base of the present invention.

[0022] Figure 7 The electrical connector of the present invention is Figure 1 Section view along line AA.

[0023] Figure 8 The electrical connector of the present invention is Figure 1 Sectional view along line BB.

[0024] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. [Specific implementation method]

[0025] Please refer to Figures 1 to 5 As shown, the electrical connector 100 includes an insulating body 1 and a conductive terminal 2 fixed to the insulating body 1. The insulating body 1 includes a pair of side walls 11 extending in the transverse direction, a pair of end walls 12 connected to the side walls 11, and a base 13 injection-molded outside the conductive terminal. The pair of side walls 11 and the pair of end walls 12 surround a receiving cavity 14 that passes through from top to bottom. A pair of mounting metal parts 3 are provided at both transverse ends of the insulating body 1. The conductive terminal 2 includes a first row of conductive terminals 21 arranged in the transverse direction, and a second row of conductive terminals 22 opposite to the first row of conductive terminals 21 in a width direction perpendicular to the transverse direction.

[0026] Please combine Figures 6 to 8As shown, the conductive terminal 2 includes a retaining portion 23 retained on the base 13, a pin 24 extending from the lower end of the retaining portion 23 and electrically connected to an external circuit board (not shown), and an elastic contact portion 25 extending from the upper end of the retaining portion 23 and formed by the base 13. The conductive terminal 2 is mounted in the receiving cavity 14 from bottom to top, and the receiving cavity 14 is further recessed to form a terminal groove 15. The elastic contact portion 25 can be elastically deformed within the range of the terminal groove 15 in the width direction. The elastic contact portion 25 is used to abut against a docking terminal (not shown) of a docking connector. Each row of the conductive terminals 2 is provided with a plurality of grounding terminals G and signal terminals S. In each row of the conductive terminals 2, two adjacent signal terminals S constitute a differential terminal pair, and the differential terminal pair and the grounding terminal G are alternately arranged in the lateral direction.

[0027] The electrical connector 100 further includes a metal shield 4 electrically connected to the ground terminal G. The conductive terminal 2 has an inner surface close to the center of the electrical connector 100 in the width direction and an outer surface opposite to the inner surface. The metal shield 4 is formed by integrally stamping and bending a metal plate. The metal shield 4 includes a flat plate portion 41 electrically connected to the elastic contact portion 25 of the ground terminal G and a connecting portion 42 integrally connecting the flat plate portion 41. The flat plate portion 41 is a flat plate structure, which is welded and fixed to the elastic contact portion 25 of the ground terminal G in the width direction. The connecting portion 42 is formed by bending and extending from one end edge of the flat plate portion 41 in the vertical direction toward a direction away from the ground terminal G, and integrally connecting the flat plate portions 41 in the same row. The metal shielding sheet 4 is disposed as a whole above the base 13 and does not extend into the base 13. The connecting portion 42 partially covers the elastic contact portion 25 in the vertical direction to shield signal crosstalk. The metal shield 4 connects the ground terminals G in the same row as a whole, so that the ground terminals G are electrically integrated with each other, thereby improving the crosstalk resonance phenomenon. The connecting portion 42 of the metal shield 4 is a free end extending from the flat plate portion 41, and can be displaced in the width direction with the elastic deformation of the elastic contact portion 25.

[0028] The metal shield 4 includes a pair of first shielding pieces 43 electrically connected to the inner surfaces of the first row of conductive terminals 21 and the second row of conductive terminals 22, and a pair of second shielding pieces 44 electrically connected to the outer surfaces of the first row of conductive terminals 21 and the second row of conductive terminals 22. In the width direction, the first shielding piece 43 is bent from the lower end of the flat plate portion 41 toward the center of the electrical connector 100, and the second shielding piece 44 is bent from the upper end of the flat plate portion 41 toward the center of the electrical connector 100. The connecting portions 42 of the first shielding piece 43 and the second shielding piece 44 are spaced apart in the vertical direction, and their projections in the width direction do not overlap. The inner surface and the outer surface of each of the grounding terminals G are electrically connected to the metal shield 4 through a single flat plate portion 41. The flat plate portion 41 of each of the metal shields 4 is located on the same side of the connecting portion 42 in the vertical direction and on the same straight line in the transverse direction. Compared with welding on the upper and lower sides, the connection portion 42 is welded to the elastic contact portion 25 of the ground terminal G through the flat plate portion 41 located on the same side, which can reduce the generation of stress. The angle formed between the connection portion 42 and the flat plate portion 41 in the first shielding sheet 43 is greater than 90 degrees to avoid interference between the connection portion 42 and the docking terminal (not shown) during docking.

[0029] Please refer to Figures 3 to 6 As shown, the base 13 includes a first base 16 for holding the holding portion 23 of the first row of conductive terminals 21 and a second base 17 for holding the holding portion 23 of the second row of conductive terminals 22. The first base 16 includes a base 131 for holding the holding portion 23 and a plurality of convex portions 132 protruding from the base 131 toward the second base 17, and a concave portion 133 is formed between adjacent convex portions 132, and the shapes of the convex portions 132 and the concave portions 133 match. The second base 17 is also provided with a base 131 for holding the holding portion 23, and a plurality of convex portions 132 and concave portions 133 provided corresponding to the convex portions 132 and concave portions 133 of the first base 16. The first base 16 and the second base 17 are matched in the up-down direction through the convex portions 132 and the concave portions 133. The first row of conductive terminals 21 and the first base 16 form a first module, and the second row of conductive terminals 22 and the second base 17 form a second module. The first module and the second module are mutually engaged and installed from bottom to top in the receiving cavity 14. The elastic contact portion 25 is received in the receiving cavity 14.

[0030] The signal terminal S and the ground terminal G are both formed by integrally stamping and bending a metal plate. The thickness of the conductive terminal 2 in the width direction is kept consistent, that is, the thickness of the pin 23, the retaining portion 23 and the elastic contact portion 25 are consistent. The elastic contact portion 25 is exposed to the air as a whole. The retaining portion 23 is covered by the first base 16 or the second base 17 of the same material, and the dielectric constant of the first base 16 and the second base 17 is higher than the dielectric constant of air. The outer surface of the retaining portion 23 is exposed outwardly to the surface of the base 131. The lateral dimension of the retaining portion 23 of the signal terminal S is smaller than the lateral dimension of the elastic contact portion 25.

[0031] 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. An electrical connector, comprising an insulating body and a conductive terminal held by the insulating body, the insulating body comprising a pair of side walls extending transversely, a pair of end walls connecting the side walls and a base holding the conductive terminal, the conductive terminal having a first row of conductive terminals and a second row of conductive terminals arranged transversely, each row of the conductive terminals being provided with a plurality of grounding terminals and signal terminals, the conductive terminal comprising a holding portion held by the base, a pin extending from one end of the holding portion to electrically connect the base to an external circuit board, and an elastic contact portion extending from the other end of the holding portion to be elastically deformable, the elastic contact portion being used to abut against a docking terminal of a docking connector, characterized in that: The electrical connector also includes a metal shielding member electrically connected to the grounding terminal, the grounding terminal having an inner surface close to the center of the electrical connector in a width direction perpendicular to the lateral direction and an outer surface opposite to the inner surface, the inner surface of the grounding terminal is integrally connected to one of the metal shielding members, and the outer surface of the grounding terminal is integrally connected to another of the metal shielding members.

2. The electrical connector according to claim 1, characterized in that: The metal shield is fixed to the ground terminals by welding.

3. The electrical connector according to claim 1, wherein: The metal shielding member is formed by integrally stamping and bending a metal plate, and comprises a flat plate portion electrically connected to the elastic contact portions of the grounding terminals and a connecting portion integrally connecting the flat plate portion.

4. The electrical connector according to claim 3, characterized in that: The flat plate portion is configured as a flat plate structure to fit the surface of the ground terminal, and the connecting portion is bent and extended in a direction away from the ground terminal in the width direction.

5. The electrical connector according to claim 3, characterized in that: The inner surface and the outer surface of each grounding terminal are electrically connected to a single flat plate portion respectively, and each connecting portion is electrically connected to the grounding terminal from the flat plate portion arranged at the same side edge, and the connecting portion is a free end extending from the flat plate portion.

6. The electrical connector according to claim 5, characterized in that: The metal shielding sheet includes a pair of first shielding sheets respectively electrically connected to the inner surfaces of the two rows of grounding terminals and a pair of second shielding sheets respectively electrically connected to the outer surfaces of the grounding terminals, and the projections of the connecting parts of the first shielding sheet and the second shielding sheet in the width direction do not overlap.

7. The electrical connector according to claim 1, characterized in that: The ground terminals and the signal terminals in each row of the conductive terminals are arranged alternately in a transverse direction.

8. The electrical connector according to claim 1, wherein: Each metal shielding sheet integrally connects the grounding terminals in the same row.

9. The electrical connector according to claim 1, wherein: A pair of the side walls and a pair of the end walls are arranged to form a receiving cavity which passes through from top to bottom. The base includes a first base which holds a holding portion of the first row of conductive terminals and a second base which holds a holding portion of the second row of conductive terminals. The first row of conductive terminals and the first base form a first module, and the second row of conductive terminals and the second base form a second module. The first module and the second module are engaged with each other and are installed in the receiving cavity from bottom to top.

10. The electrical connector according to claim 8, characterized in that: The first base and the second base are both provided with a concave portion and a convex portion that match each other, and the first base and the second base are engaged with each other from top to bottom through the concave portion and the convex portion.

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