TWI751634B - Electrical connector - Google Patents

Abstract

The present invention is related to an electrical connector having a casing, a terminal seat and at least one signal shielding terminal. The terminal seat has an insulation body and a terminal assembly. The insulation body partially encapsulates the terminal assembly and the signal shielding terminal. The signal shielding terminal is separately and parallelly placed outside one of the high-speed signal terminal pairs or outside of a ground terminal of the terminal assembly. When the electrical connector is directly and electrically connected to ground or is indirectly and electrically connected to ground through the casing, the signal shielding terminal filters noise generated by transmitting the high-speed signal through the high-speed signal terminal and a high-frequency characteristics of the electrical connector can be optimized.

Description

electrical connector

The present invention relates to an electrical connector, in particular to an electrical connector for reducing high-speed transmission interference.

With the increasing demand for high-speed signal transmission in electronic devices or computer devices, the electrical connectors used as electronic devices or computer devices must also support high-speed signal transmission accordingly. Taking USB connectors as an example, USB3.1 Type A connectors are not only Including low-speed signal terminal group (D+, D-), also added high-speed signal terminal group (SSTX+, SSTX-, SSRX+, SSRX-).

In actual use, the above-mentioned high-speed signal terminal group is prone to form near-end crosstalk interference and common mode effect during the transmission of high-speed signals, resulting in increased electromagnetic wave interference, which in turn affects the performance of its high-frequency characteristics; therefore, high-speed signal transmission is currently supported. The electrical connector needs to be further improved.

In view of the poor high-frequency characteristics of the above-mentioned electrical connector supporting high-speed signal transmission, the main purpose of the present invention is to provide an electrical connector with good high-frequency characteristics.

The main technical means used to achieve the above purpose is to make the electrical connector include: a shell; A terminal block is disposed in the casing, and includes an insulating body and a terminal group; wherein the terminal group is partially covered by the insulating body, and includes at least one ground terminal and a high-speed terminal group; wherein the high-speed terminal group is The terminal group includes a first high-speed signal terminal pair and a second high-speed signal terminal pair; and A first signal shielding terminal is partially covered by the insulating body, and is spaced and juxtaposed on one outer side of the first high-speed signal terminal pair.

As can be seen from the above description, the electrical connector of the present invention mainly adds a first signal shielding terminal to the terminal base, and is arranged side by side on one of the outer sides of the first high-speed signal terminal pair at intervals; thus, when the electrical connector of the present invention is welded to the On the circuit board of the electronic device, or indirectly through plugging into the USB socket, the first signal shielding terminal of the electronic device can be directly connected to the ground potential on the circuit board, or contacted with the ground terminal of the USB socket to be electrically connected to the ground It can filter out the noise generated by the high-speed signal terminal in the high-speed transmission signal, and optimize the high-frequency characteristics of the electrical connector.

The main technical means used to achieve the above purpose is to make another electrical connector include: a shell; a terminal block, disposed in the casing, and comprising an insulating body and a terminal group; wherein the terminal group is partially covered by the insulating body, and includes at least one ground terminal and a high-speed terminal group; and A first signal shielding terminal is partially covered by the insulating body, and is arranged side by side at an outer side of the at least one grounding terminal.

As can be seen from the above description, the electrical connector of the present invention mainly adds a first signal shielding terminal to the terminal block, and is arranged side by side on one of the outer sides of the grounding terminal at intervals; thus, when the electrical connector of the present invention is soldered to the circuit of the electronic device When plugged into the USB socket, the first signal shielding terminal can be directly connected to the ground potential of the circuit board, or contacted with the ground terminal of the USB socket to be electrically connected to the ground potential, and has Filter out the noise generated by the high-speed signal terminal in the high-speed transmission signal, and optimize the high-frequency characteristics of the electrical connector.

The present invention is aimed at improving the electrical connector, and the technical content of the present invention is described in detail with a plurality of embodiments in conjunction with the drawings.

First, please refer to FIG. 1 and FIG. 2A , which are the first embodiment of the electrical connector 1 of the present invention, which includes a housing 10 , a terminal base 20 and a first signal shielding terminal 50 .

In this embodiment, the casing 10 is a metal casing.

The above-mentioned terminal block 20 is disposed in the housing 10 and includes an insulating body 30 and a terminal group 40 ; as shown in FIG. 2B , the terminal group 40 is partially covered by the insulating body 30 and at least includes At least one ground terminal 41 (GND) and a high-speed terminal group 43 ; wherein the high-speed terminal group 43 includes a first high-speed signal terminal pair 431 and a second high-speed signal terminal pair 432 . Preferably, the ground terminal 41 is located between the first high-speed signal terminal pair 431 (SSTX+, SSTX-) and the second high-speed signal terminal (SSRX+, SSRX-). In this embodiment, the terminal group 40 further includes a low-speed terminal group 42, which includes a first terminal pair 421 and a second terminal pair 422; preferably, the ground terminal 41 is located in the first terminal pair 421 (VBUS, D-) and the second terminal pair 422 (GND, D+), while the first high-speed signal terminal pair 431 (SSTX+, SSTX-) and the second high-speed signal terminal (SSRX+, SSRX-) The pairs are respectively arranged on the outside of the first terminal pair 421 and the second terminal pair 422 at intervals. The insulating body 30 includes a tongue insulating portion 31 and a base 32 , the grounding terminal 41 , the first and second terminal pairs 421 , 422 and the first and second high-speed signal terminal pairs 431 , 432 are arranged side by side and spaced apart In the tongue piece insulating portion 31 , the front ends 411 , 423 , 424 , 433 , and 434 of each terminal are exposed to the tongue piece insulating portion 31 , and the rear ends 412 , 425 , 426 , 435 , and 436 of each terminal are released from the base 32 is protruded from the outside; wherein the ground terminal 41 and the front ends 411, 433, 434 of the respective terminals of the first and second high-speed signal terminal pairs 431, 432 are exposed on the upper surface of the tongue insulating portion 31, and Flush and close to the front side of the tongue piece insulating portion 31 , the front ends 423 and 424 of each terminal of the first and second terminal pairs 421 and 422 are exposed on the upper surface of the tongue piece insulating portion 31 and away from the tongue piece insulation. The front side of the portion 31 , that is, the respective terminals of the first and second terminal pairs 421 , 422 are shorter than the ground terminal 41 and the respective terminals of the first and second high-speed signal terminal pairs 431 , 432 .

As shown in FIG. 2A and FIG. 2B , the above-mentioned first signal shielding terminal 50 is also partially covered by the insulating body 30 , and is arranged side by side on one of the outer sides of the first high-speed signal terminal pair 431 at intervals; in this embodiment, the The first signal shielding terminals 50 are arranged side by side between the first high-speed signal terminal pair 431 and the grounding terminal 41, and the rear end 501 thereof protrudes from an outer side of the base 32; and this embodiment further includes a first Two signal shielding terminals 51, the second signal shielding terminals 51 are spaced side by side between the second high-speed signal terminal pair 432 and the ground terminal 41; in other words, the first and second signal shielding terminals 50, 51 are spaced apart respectively It is arranged on the opposite outer side of the ground terminal 41 . Specifically, the first signal shielding terminal 50 is spaced and arranged between the first high-speed signal terminal pair 431 and the first terminal pair 421, and the second signal shielding terminal 51 is spaced and arranged side by side with the second high-speed signal between the terminal pair 432 and the second terminal pair 422 . Preferably, the first and second signal shielding terminals 50 , 51 are shorter than the respective terminals of the first and second terminal pairs 421 , 422 .

In addition, please refer to FIG. 3A again, which is a second embodiment of the terminal block 20a of the present invention. Most of the structures are the same as those of the first embodiment shown in FIG. 2B , but the first signal shielding terminals 50 of this embodiment are spaced apart from each other. are arranged side by side on the other outer side of the first high-speed signal terminal pair 431 , that is, the first signal shielding terminals 50 are arranged side by side at the outer side of the first high-speed signal terminal pair 431 away from the ground terminal 41 ; In the embodiment, the second signal shielding terminals 51 are arranged side by side at the other outer side of the second high-speed signal terminal pair 432 , that is, the second signal shielding terminals 51 are arranged side by side at intervals of the second high-speed signal terminal 41 away from the ground terminal 41 . The outer side of the signal terminal pair 432 .

Please refer to FIG. 3B again, which is a third embodiment of the terminal block 20b of the present invention. Most of the structures are the same as those of the first embodiment shown in FIG. 2B , but the first signal shielding terminals 50 of this embodiment are arranged at intervals. Between the two terminals (VBUS, D-) of the first terminal pair 421; and the second signal shielding terminal 51 of this embodiment is disposed between the two terminals (GND, D+) of the second terminal pair 422 at intervals.

As shown in FIG. 3C, it is the fourth embodiment of the terminal block 20c of the present invention. Most of the structure is the same as that of the first embodiment shown in FIG. 2B, except that the first signal shielding terminals 50 of this embodiment are arranged at intervals on the ground. between the terminal 41 and the first terminal pair 421 (VBUS, D-); and the second signal shielding terminal 51 of this embodiment is spaced between the ground terminal 41 and the second terminal pair 422 (GND, D+). between.

As can be seen from the above-mentioned first to fourth embodiments of the terminal block of the present invention, since the first signal shielding terminal 50 and the second signal shielding terminal 51 are arranged side by side with each terminal of the terminal block 20, 20a, 20b, 20c at intervals, The rear ends 501 and 511 also pass through the base 32 of the insulating body 30; therefore, when the electrical connector 1 of the present invention is soldered to a circuit board (not shown in the figure) corresponding to an electronic device, the first and second The signal shielding terminals 50 and 51 can be directly connected to the ground potential on the circuit board, so as to filter out the noise generated by the high-speed signal terminals in the high-speed transmission signal, and optimize the high-frequency characteristics of the electrical connector.

In addition, as shown in FIG. 4 , it is a fifth embodiment of the electrical connector 1 of the present invention. Most of the structures are the same as those of the first embodiment shown in FIG. 2A , except for a first signal shielding terminal 50 ′ and a second signal shielding terminal 50 ′. The front end of the shielding terminal (not shown in the figure) penetrates the tongue insulating portion 31 and is in contact with one of the inner walls of the housing 10. Similarly, a second signal shielding terminal (not shown in the figure) of this embodiment has a The front end also protrudes out of the tongue insulating portion and contacts the inner wall surface of the casing to improve the performance of guiding noise grounding; in this embodiment, the electrical connector 1 of the present invention can be a USB socket to connect with a USB plug 60 are plugged into each other.

To sum up, the electrical connector of the present invention mainly adds at least one signal shielding terminal to the terminal base, and is arranged side by side at intervals on one of the outer sides of the first high-speed signal terminal pair or the ground terminal; in this way, when the electrical connector is soldered To the circuit board of the electronic device, its signal shielding terminal can be directly connected to the ground potential on the circuit board, or when the electrical connector is plugged into the corresponding USB socket, its signal shielding terminal is in contact with the ground terminal of the USB socket It is electrically connected to the ground potential, and can filter out the noise generated by the high-speed signal terminal in the high-speed transmission signal, thereby optimizing the high-frequency characteristics of the electrical connector.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention in any form. Although the present invention has been disclosed as above by embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field, Within the scope of not departing from the technical solution of the present invention, when the technical content disclosed above can be used to make some changes or modifications to equivalent embodiments with equivalent changes, but any content that does not depart from the technical solution of the present invention, according to the technical essence of the present invention Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solutions of the present invention.

1: Electrical connector 10: Shell 20, 20a, 20b, 20c: Terminal Block 30: Insulation body 31: Tongue insulation part 32: Pedestal 40: Terminal group 41: Ground terminal 411: Front End 412: Backend 42: Low-speed terminal group 421: first terminal pair 422: Second terminal pair 423, 424: front end 425, 426: backend 43: High-speed terminal group 431: The first high-speed terminal pair 432: The second high-speed terminal pair 433, 434: Front end 435, 436: Backend 50, 50': first signal shielding terminal 501: Backend 51: The second signal shielding terminal 511: Backend 60: Plug

FIG. 1 is a three-dimensional external view of the electrical connector of the present invention. FIG. 2A is a three-dimensional external view of the first embodiment of the terminal block of the present invention. Figure 2B: A top plan view of Figure 2A. 3A: A top plan view of the second embodiment of the terminal block of the present invention. 3B: A top plan view of the third embodiment of the terminal block of the present invention. 3C: A top plan view of the fourth embodiment of the terminal block of the present invention. FIG. 4 is a cross-sectional view of the fifth embodiment of the electrical connector of the present invention being connected to a corresponding electrical connector.

20: Terminal Block

30: Insulation body

31: Tongue insulation part

32: Pedestal

40: Terminal group

41: Ground terminal

42: Low-speed terminal group

43: High-speed terminal group

50: The first signal shielding terminal

51: The second signal shielding terminal

Claims (7)

An electrical connector, comprising: a shell; a terminal seat, which is arranged in the shell, and includes an insulating body and a terminal group; wherein the terminal group is partially covered by the insulating body, and includes at least one grounding terminals, a low-speed terminal group and a high-speed terminal group; wherein the low-speed terminal group includes a first terminal pair and a second terminal pair, and the high-speed terminal group includes a first high-speed signal terminal pair and a second high-speed signal terminal pair A terminal pair, the at least one ground terminal is arranged side by side between the first high-speed signal terminal pair and a second high-speed signal terminal pair, the first terminal pair is arranged side by side between the at least one ground terminal and the first high-speed signal terminal between the terminal pairs, the second terminal pair is arranged side by side between the at least one ground terminal and the second high-speed signal terminal pair; and a first signal shielding terminal is partially covered by the insulating body and arranged side by side at intervals between the first terminal pair and the first high-speed signal terminal pair. The electrical connector of claim 1 further comprises a second signal shielding terminal, which is partially covered by the insulating body and is spaced and juxtaposed between the second terminal pair and the second high-speed signal terminal pair. The electrical connector of claim 2, wherein the lengths of the first signal shielding terminal and the second signal shielding terminal are shorter than the first high-speed signal terminal pair and the second high-speed signal terminal pair. The electrical connector according to claim 2 or 3, wherein: the first signal shielding terminal and the second signal shielding terminal respectively pass through the insulating body and are in contact with an inner wall surface of the housing. An electrical connector, comprising: a housing; a terminal block, which is arranged in the housing and includes an insulating body and a terminal group; wherein the terminal group is partially covered by the insulating body, and includes at least one grounding terminal, a low-speed terminal group and A high-speed terminal group; wherein the low-speed terminal group includes a first terminal pair and a second terminal pair, the high-speed terminal group includes a first high-speed signal terminal pair and a second high-speed signal terminal pair, the at least one ground Terminals are arranged side by side between the first high-speed signal terminal pair and a second high-speed signal terminal pair, the first terminal pair is arranged side by side between the at least one ground terminal and the first high-speed signal terminal pair, the first terminal pair Two terminal pairs are arranged side by side between the at least one ground terminal and the second high-speed signal terminal pair; and a first signal shield terminal is partially covered by the insulating body, and is spaced apart from the at least one ground terminal and the second high-speed signal terminal pair. between the first terminal pair. The electrical connector according to claim 5, further comprising a second signal shielding terminal, which is partially covered by the insulating body, and is spaced and juxtaposed between the at least one ground terminal and the second terminal pair. The electrical connector as claimed in claim 6, wherein: the first signal shielding terminal and the second signal shielding terminal respectively pass through the insulating body and are in contact with an inner wall surface of the housing.

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