TWM668386U - Electrical connector and assemblyof the same - Google Patents

Abstract

An electrical connector includes an insulating body with a slot, a terminal and a grounding member. The terminal is arranged on opposite sides of the slot and includes a plurality of signal terminal pairs and a plurality of grounding terminals. The terminal includes a holding portion fixed to the insulating body, an elastic portion extending upward from the holding portion, and a contact portion located at the end of the elastic portion. The grounding member includes a ridge, and a plurality of shielding portions extending from the ridge, a plurality of first grounding portions and a second grounding portion. The shielding portions are located at the outer sides of the corresponding signal terminal pairs, the first and second grounding portions extend along the extension direction of the corresponding grounding terminals, the first grounding portion abuts against the holding portion of the grounding terminal, and the second grounding portion extends to the elastic portion of the grounding terminal. When the elastic portion is driven to move outward, it abuts against the corresponding second grounding portion. The grounding piece of the invention can not only play the role of grounding and signal shielding, but also form a common-mode choke structure between its two grounding parts and the corresponding grounding terminals, thereby achieving the purpose of eliminating differential-mode crosstalk.

Description

Electrical connector and assembly thereof

This invention relates to an electrical connector and a combination thereof.

The transmission rates of electrical connectors currently under development are getting higher and higher. The transmission bandwidth of some connectors has even reached 128Gbps. However, when high-speed signals are transmitted, external interference signals and differential signal crosstalk have a huge impact on signal transmission quality and speed. Therefore, it is necessary to provide an improved electrical connector to solve the above problems.

The invention provides an electrical connector and a combination thereof, which have good high-frequency performance.

To achieve the above-mentioned purpose, the present application may adopt the following technical solution: an electrical connector, comprising an insulating body, at least one row of terminals and a grounding member, wherein the insulating body comprises a longitudinal slot, the terminals are arranged at two opposite sides of the slot and a row of the terminals comprises a plurality of signal terminal pairs and a plurality of grounding terminals, the terminals comprise a retaining portion retained in the insulating body, an elastic portion extending upward from the retaining portion, and a contact portion located at the end of the elastic portion and protruding into the slot in an arc shape; the grounding member The component includes a spine, and a plurality of shielding portions, a plurality of first grounding portions and a plurality of second grounding portions extending from the spine, wherein the shielding portions are located at the outer sides of the corresponding signal terminal pair, the first grounding portions and the second grounding portions extend along the extension direction of the corresponding same grounding terminal, the first grounding portion abuts against the retaining portion of the corresponding grounding terminal, and the second grounding portion extends to the elastic portion of the corresponding grounding terminal, and when the elastic portion is driven to move outward, it abuts against the corresponding second grounding portion.

To achieve the above-mentioned purpose, the present application may also adopt the following technical solution: an electrical connector assembly, an electrical connector assembly, comprising a first connector, a second connector and a PCB board, the first connector comprising an insulating body, two rows of terminals and two grounding members, the insulating body comprising a first slot, the two rows of terminals being arranged at opposite sides of the slot and comprising a signal terminal pair and a grounding terminal, the terminals comprising a holding portion fixed to the insulating body, an elastic portion extending upward from the holding portion, a contact portion located at the end of the elastic portion and protruding into the slot in an arc shape, and a pin extending downward from the holding portion; the second connector comprising a second slot, the PCB board having a first contact portion that can be matched with the first slot; The first side is perpendicular to the second side; each of the grounding members is located on the outer side of the terminal away from the first slot, and the grounding member includes a ridge, and a plurality of shielding portions extending from the ridge, a plurality of first grounding portions and a plurality of second grounding portions, the shielding portions extending from the ridge and facing the corresponding pair of signal terminals, the first grounding portions and the second grounding portions extending along the extending direction of the same grounding terminal, the first grounding portion abuts against the holding portion of the corresponding grounding terminal, the second grounding portion extends to the outer side of the elastic portion of the corresponding grounding terminal and abuts against the second grounding portion when the elastic portion is actuated to move outward:

Compared with the prior art, the electrical connector of the present invention can not only ground its grounding terminal through the grounding portion, but also shield the signal terminal pair through the shielding portion, thereby effectively improving signal crosstalk; in addition, one of the two grounding portions can contact and be electrically connected to the elastic portion of the grounding terminal, and the other grounding portion can contact and be electrically connected to the retaining portion of the same grounding terminal, so that a common-mode choke structure can be formed between the two grounding portions and the corresponding grounding terminals, thereby achieving the purpose of eliminating differential-mode crosstalk and improving the high-frequency transmission performance of the connector.

1-3 , the present invention discloses an electrical connector assembly 100 for electrically connecting an external component such as a storage module (not shown in the figure) to an external circuit board (not shown in the figure), including a first connector 10, a second connector 20, and a PCB board 30 inserted between the first and second connectors 10, 20 to achieve electrical connection.

As shown in FIG3 , the first connector 10 includes an insulating body 11A and two rows of terminals 12, and one side of the PCB board 30 is plugged into the first connector 10. Further in conjunction with FIG4-5 , the terminals 12 of the first connector 10 are first formed into a terminal module, and then assembled in the insulating shell 11 to form the insulating body 11A, and two grounding members 13 are installed between the insulating body 11A and the terminal module. The insulating shell 11 includes a longitudinal slot 110, and the two rows of terminals 12 are arranged on opposite sides of the slot 110, and each row of terminals includes a plurality of signal terminal pairs 12S and a plurality of grounding terminals 12G. 7 , the terminal 12 includes a retaining portion 120 retained by the insulating body 11A, an elastic portion 121 extending upward from the retaining portion 120, a contact portion 122 located at the end of the elastic portion 121 and protruding in an arc shape into the slot 110, and a pin 123 extending downward from the retaining portion 120, and the pin 123 is used for soldering to the external circuit board.

Referring to FIG. 7 , each grounding member 13 includes a longitudinal ridge 130 and a plurality of shielding portions 131 extending from the ridge 130, a plurality of first grounding portions 132 and a plurality of second grounding portions 133. In conjunction with FIGS. 5-6 , the shielding portions 131 are located one by one on the outer side of the corresponding signal terminal pair 12S. In conjunction with FIG. 8 , the first grounding portion 132 and the second grounding portion 133 extend along the extension direction corresponding to the same grounding terminal 12G. The first grounding portion 132 abuts against the retaining portion 120 of the grounding terminal 12G, and the second grounding portion 133 extends to the elastic portion 121 of the corresponding grounding terminal 12G. As shown in FIG. 9 , after the first side 31 of the PCB board 30 is inserted into the slot 110, the second grounding portion 133 is actuated to abut against the elastic portion 121 of the corresponding grounding terminal. Preferably, the first grounding portion 132 is fixed to the holding portion 120 of the grounding terminal 12G by welding, so that the grounding member 13 can be relatively stably fixed to the grounding terminal 12G. In this way, signal transmission can be performed as follows: the first path is that the electrical signal is transmitted downward from the contact portion 122 to the elastic portion 121 and then to the holding portion 120, and then from the holding portion 120 to the first grounding portion 132, and then to the ridge 130. The second path is that the electrical signal is transmitted from the contact portion 122 to the second grounding portion 133 first, and then to the ridge 130. The two transmission paths can form a common mode choke structure, thereby achieving the purpose of eliminating differential mode crosstalk, as shown by the arrows in Figure 9. In this embodiment, the elastic portion 121 extends obliquely in the slot 110, and the second grounding portion 133 can abut against the position of the elastic portion 121 near the contact portion 122 after the elastic portion 121 is elastically deformed. In order to facilitate the second grounding portion 133 to contact the elastic portion 121, as shown in FIG7, in the longitudinal direction of the slot, the width of the elastic portion 121 is greater than the width of the second grounding portion 133, so that the elastic portion 121 can conveniently contact the second grounding portion 133 after being deformed outward. In addition, in order to further ensure the strength of the second grounding portion 133, the width of the second grounding portion 133 is greater than the width of the contact portion 122.

As shown in FIG. 7 , in this embodiment, the second grounding portion 133 is formed by the ridge 130 first extending vertically upward, and then bending and extending toward the elastic portion 121; the first grounding portion 132 is formed by the ridge 130 first extending vertically downward, and then bending and extending toward the retaining portion 120; the shielding portion 131 is formed by the ridge 130 extending vertically in the up-down direction, and the vertically extending portions of the first and second grounding portions 132 and 133 are located in the same plane as the shielding portion 131. In this embodiment, preferably, the shielding portion 131 extends vertically upward and shields at least a portion of the elastic portion 121 corresponding to the signal terminal pair 12S, and the upper end of the shielding portion 131 is lower than the upper end of the first grounding portion 132. In this embodiment, in order to facilitate the processing of the grounding member 13, the grounding member 13 can be integrally formed of a metal material.

5-6, the two rows of terminals 12 include a row of first terminals 124 and a row of second terminals 125. The first rows of terminals 124 are fixed to the first insulating strip 111 to form a terminal module, and the second rows of terminals 125 are fixed to the second insulating strip 112 to form a second terminal module. The two terminal modules are assembled to each other and then assembled to the insulating shell 11 to form the insulating body 11A. The ridge 130 is sandwiched between the corresponding first and second insulating strips 111, 112 and the insulating shell 11. The outer sides of the first and second insulating strips 111, 112 are provided with receiving grooves 114, the grounding member 13 is located in the receiving groove 114 and the lower end of the grounding member 13 abuts against the bottom of the receiving groove 114, so that the grounding member 13 is stably supported on the corresponding insulating strips 111, 112 in the up and down directions. Preferably, the lower end of the shielding portion 131 abuts against the bottom of the receiving groove 114, as can be clearly shown in FIG9.

In the invention, grounding members 13 are disposed on the outer sides of the first terminal module and the second terminal module, and the structures of the two terminal modules are the same or symmetrically arranged, and the structures of the grounding members 13 located on both sides of the two terminal modules are also the same or symmetrically arranged; of course, in other embodiments, the grounding member 13 can also be arranged to be located only on the outer side of one side of the terminal module. Referring to FIG. 4 , the first connector 10 includes a high-speed transmission area A and a low-speed transmission area B, and the grounding member 13 is located on the outer side of the terminal 12 corresponding to the high-speed transmission area A.

Referring to Figs. 1, 2 and 10, the second connector 20 includes an insulating body 21 and two rows of terminals 22. The insulating body 21 is provided with a slot 221 at its front end and a slot 220 at its rear end. The two rows of terminals 22 are provided at opposite sides of the slots 221 and 220. The second side 32 provided on the PCB board is inserted into the slot 220, and the first side 31 provided is inserted into the slot 110, so as to achieve electrical connection between the first and second electrical connectors 10 and 20. The first side 31 is perpendicular to the second side 32. The slot 221 of the second connector 20 is used for inserting external components such as storage modules, so that the connection between the external components such as storage modules and the circuit board is realized through the electrical connector assembly 100. The insulating body 21 of the second connector is wrapped with a metal shell 23, which has mounting feet 231 that are offset from each other. The bottom surface of the mounting feet is provided with a notch 232, and the top surface is provided with an upward protrusion 233 for fixing.

The main improvement of the first connector 10 is the additional grounding member 13. In this embodiment, the first connector is used to mate with the PCB board 30, but it is not limited to this embodiment. The first connector can be an independent electrical connector separately provided on the external circuit board or the main circuit board, and can be directly matched with, for example, an EDSFF module.

In summary, the above embodiments are preferred implementations of the present invention, but not all implementations. 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 present invention.

100: electrical connector assembly 124: first terminal 10: first connector 125: second terminal 11A, 21: insulation body 13: grounding piece 11: insulation shell 130: spine 110, 220, 221: slot 131: shielding part 111: first insulation strip 132: first grounding part 112: second insulation strip 133: second grounding part 114: receiving groove 20: second connector 12, 22: terminal 23: metal shell 12S: signal terminal pair 231: mounting foot 12G: grounding terminal 232: notch 120: retaining part 233: protrusion 121: elastic part 30PCB: board 122: contact part 31: first side 123: pin 32: second side

Figure 1 is a three-dimensional diagram of the electrical connector assembly of the present invention; Figure 2 is a three-dimensional exploded diagram of Figure 1 of the present invention; Figure 3 is another three-dimensional exploded diagram of Figure 1; Figure 4 is a three-dimensional exploded diagram of the first connector in Figure 1; Figure 5 is a further three-dimensional exploded diagram of Figure 4; Figure 6 is a three-dimensional diagram of the two terminal modules in Figure 5; Figure 7 is a further three-dimensional exploded diagram of Figure 6, in which the grounding piece is separated from the terminal module; Figure 8 is a cross-sectional view of the first connector; Figure 9 is a cross-sectional view of the first connector, in which the PCB board is inserted into the first connector; and Figure 10 is a three-dimensional exploded view of the second connector in Figure 1.

111: The first insulation strip

112: Second insulation strip

12S: Signal terminal pair

12G: Ground terminal

124: First row of terminals

125: Second row of terminals

131: Shielding part

132: First grounding part

133: Second grounding part

Claims (10)

An electrical connector, comprising: an insulating body, comprising a longitudinal slot; terminals, at least one row, arranged on opposite sides of the slot, wherein one row of the terminals comprises a plurality of signal terminal pairs and a plurality of ground terminals, wherein the terminals comprise a retaining portion retained in the insulating body, an elastic portion extending upward from the retaining portion, and a contact portion located at the end of the elastic portion and protruding into the slot in an arc shape; and a grounding member; The grounding member includes a ridge, and a plurality of shielding portions extending from the ridge, a plurality of first grounding portions, and a plurality of second grounding portions. The shielding portions are located one by one on the outer side of the corresponding signal terminal pair. The first grounding portion and the second grounding portion extend along the extension direction of the corresponding grounding terminal. The first grounding portion abuts against the retaining portion of the corresponding grounding terminal. The second grounding portion extends to the elastic portion of the corresponding grounding terminal. When the elastic portion is actuated to move outward, it abuts against the corresponding second grounding portion. An electrical connector as described in claim 1, wherein the elastic portion extends obliquely into the slot, and the second grounding portion abuts against a position of the elastic portion close to the contact portion, and the first grounding portion is welded to a retaining portion of the grounding terminal. An electrical connector as described in claim 1, wherein the shielding portion is formed by a ridge extending vertically in an up-and-down direction. As described in claim 1, the first grounding portion is formed by first extending vertically downward from the spine and then bending and extending toward the retaining portion; the second grounding portion is formed by first extending vertically upward from the spine and then bending and extending toward the elastic portion. An electrical connector as described in claim 4, wherein the vertical portions, ridges and shielding portions of the first and second grounding portions are in the same plane. An electrical connector as described in claim 1, wherein the electrical connector includes two rows of terminals, the insulating body includes two insulating strips respectively holding the two rows of terminals and an insulating shell covering the outer sides of the two insulating strips, and the ridge is sandwiched between the corresponding insulating strips and the insulating shell. An electrical connector as described in claim 6, wherein the elastic portion extends upward from the insulating strip and extends obliquely into the slot, the shielding portion extends vertically upward and shields at least a portion of the elastic portion corresponding to the signal terminal pair, and the upper end of the shielding portion is lower than the upper end of the second grounding portion. An electrical connector as described in claim 6, wherein a receiving groove is provided on the outer side of the insulating strip, the grounding member is located in the receiving groove and the lower end of the grounding member abuts against the bottom of the receiving groove. An electrical connector as described in claim 1, wherein, in the longitudinal direction, the width of the second grounding portion is greater than the width of the contact portion and smaller than the width of the elastic portion. An electrical connector assembly, comprising: A first connector, comprising an insulating body, two rows of terminals and two grounding members, the insulating body comprising a first slot, the two rows of terminals being arranged on opposite sides of the slot and comprising a signal terminal pair and a grounding terminal, the terminals comprising a retaining portion retained by the insulating body, an elastic portion extending upward from the retaining portion, a contact portion located at the end of the elastic portion and protruding into the slot in an arc shape, and a pin extending downward from the retaining portion; A second connector, comprising a second slot; and A PCB board, having a first side that can be matched with the first slot and a second side that can be matched with the second slot, and the first side is perpendicular to the second side; Each of the grounding members is located on the outer side of the terminal away from the first slot, and the grounding member includes a ridge, and a plurality of shielding portions extending from the ridge, a plurality of first grounding portions, and a plurality of second grounding portions. The shielding portion extends from the ridge and is arranged directly opposite to the corresponding pair of signal terminals. The first grounding portion and the second grounding portion extend along the extension direction of the same grounding terminal. The first grounding portion abuts against the retaining portion of the corresponding grounding terminal. The second grounding portion extends to the outer side of the elastic portion of the corresponding grounding terminal and abuts against the second grounding portion when the elastic portion is actuated to move outward.