TWM650096U - Shielding structure of electrical connector - Google Patents

Abstract

The invention is a shielding structure of an electrical connector, which includes: an insulating body, the front edge of the tongue plate of which is provided with a plurality of first hollow-shaped first docking grooves, a plurality of second docking grooves and a plurality of limiting grooves in sequence; a high-speed A terminal set, which includes a ground terminal, a first signal pair terminal and a second signal pair terminal inserted through the insulating body; a low-speed terminal set, which includes a ground terminal and the first signal pair inserted through the insulating body. a third signal pair terminal between the signal pair terminals, and a fourth signal pair terminal between the ground terminal and the second signal pair terminal; a shielding terminal including a base plate with two sides of the base plate turned to form a through-hole In the side plates in the limiting grooves, the penetration points of the two side plates are respectively located between the first pair of signal terminals and the third pair of signal terminals, and between the second pair of signal terminals and the fourth pair of signal terminals. , and the two side plates of the shielding terminal extend adjacent to the rear end of the tongue plate with a ground pin exposed on the rear side of the insulating body, and the base plate has an inner wall of the metal shell that abuts outwardly on the mating connector Department of resistance.

Description

Shielding structure of electrical connectors

This invention relates to a shielding structure of an electrical connector, and specifically refers to an electromagnetic wave generated when the first signal pair terminal and the second signal pair terminal of a high-speed terminal set in an electrical connector transmit high-frequency signals, which can pass through the two The shielding terminals between them are shielded and absorbed, and the first path for the shielding terminals to eliminate electromagnetic waves is to convert the absorbed electromagnetic waves into currents through the resisting portion and conduct them to the metal shell of the mating connector, and the metal shell receives The current is then directed to the grounding area of the connected first circuit board or the metal shell of the first electronic product for elimination; the second path for the shielding terminal to eliminate electromagnetic waves is to convert the electromagnetic waves into current through the two grounding pins of the shielding terminal. It is conducted to the preset second circuit board or the metal casing of the second electronic product for elimination. Through the first path and the second path, the crosstalk interference and electromagnetic wave interference problems generated by high-speed terminals when transmitting high-frequency signals can be eliminated.

According to the rapid development of electronic technology nowadays, various electronic devices have been popularized in every corner of society. As technology becomes more and more developed, the development trend of electronic products such as computers, laptops, and smart phones also increases. Moving towards strong computing power, fast transmission speed, and light, thin, short, and small size, the size and height of the connectors inside electronic products need to be smaller and more precise, and the overall structural strength also needs to be strengthened. In response to the current development trends of electronic products, various types of connectors have been developed.

Furthermore, as the connectors of current mobile devices are becoming smaller and smaller in design, the requirements for transmission speed and bandwidth are also getting higher and higher. In contrast, problems caused by high-frequency signal transmission are endless, and As connectors become miniaturized and transmission speeds increase significantly, the number of their terminal groups increases and their distribution becomes more dense. It is extremely easy for adjacent terminals to be too close to each other, causing electromagnetic waves and crosstalk interference during high-frequency signal transmission. In the future, With the advancement of semiconductor manufacturing processes, the problem of signal interference in the connector itself will become more serious. For high-frequency connectors, among many signal integrity problems, the size of electromagnetic interference (EMI) is closely related to the internal structure of electronic products. How the system grounding area is designed has a great relationship. For the USB3.1 TYPE-A connector, it includes two low-speed terminals (D+, D-) and power/ground terminals (VBUS, GND) at the back end of the docking, and The four high-speed terminals (SSTX+, SSTX-, SSRX+, SSRX-) located at the back end of the docking station and the ground terminal located in the center can easily cause crosstalk interference and electromagnetic wave interference when transmitting high-frequency signals, resulting in high-frequency The transmission cannot meet the predetermined standards. How to solve the aforementioned problems needs to be studied and overcome by those engaged in this industry.

Therefore, in view of the above-mentioned problems and deficiencies, the creator collected relevant information, and after multiple evaluations and considerations, he came up with the creation of the shielding structure of this electrical connector.

This invention is mainly a shielding structure of an electrical connector, which includes: an insulating body, the front edge of the tongue plate of which is provided with a plurality of hollow-shaped first docking grooves, a plurality of second docking grooves and a plurality of limiting grooves in sequence; a high-speed A terminal set, which includes a ground terminal, a first signal pair terminal and a second signal pair terminal inserted through the insulating body; a low-speed terminal set, which includes a ground terminal and the first signal pair inserted through the insulating body. a third signal pair terminal between the signal pair terminals, and a fourth signal pair terminal between the ground terminal and the second signal pair terminal; a shielding terminal The sub-unit includes a base plate and two sides of the base plate are turned to form side plates that pass through the limiting grooves, and the penetration points of the two side plates are respectively located between the first pair of signal terminals and the third pair of signal terminals, and Between the second signal pair terminal and the fourth signal pair terminal, a ground pin exposed on the rear side of the insulating body extends from the two side plates of the shielding terminal adjacent to the rear end of the tongue plate, and in the substrate It has a resisting portion that abuts outwardly against the inner wall of the metal housing of the mating connector. With the above structure, the electromagnetic waves generated by the first signal pair terminal and the second signal pair terminal of the high-speed terminal group when transmitting high-frequency signals can be shielded and absorbed by the shielding terminal located between them, and the shielding terminal eliminates the electromagnetic waves. The first path is to convert the absorbed electromagnetic wave into a current through the resisting part and conduct it to the metal shell of the mating connector, and the current received by the metal shell is then directed to the connection of the connected first circuit board. area or the metal shell of the first electronic product; the second path for the shielding terminal to eliminate the electromagnetic wave is to convert the electromagnetic wave into a current through the two ground pins of the shielding terminal and conduct it to the preset second circuit board or the metal of the second electronic product. Elimination is carried out in the casing. Through the first path and the second path, the problems of crosstalk interference and electromagnetic wave interference generated by high-speed terminals when transmitting high-frequency signals can be eliminated.

The secondary purpose of this invention is to assemble a shielding case outside the insulating body. The shielding case has a butt side adjacent to the front edge of the tongue plate and an assembly side away from the front edge of the tongue plate. The assembly side of the shielding case is Provide a back plate for snap-fastening.

Another object of this invention is that the tongue plate of the insulating body further extends rearward with a tall body, which penetrates the ground terminal, the first signal pair terminal, the second signal pair terminal, and the third signal pair terminal in the tongue plate. The three signal pair terminals and the fourth signal pair terminal are turned downward in the elevated body and each has an exposed welding portion extending horizontally.

Another purpose of this creation is that the shielding terminal is in a "U" shape or an inverted "U" shape. ‖-shaped plate body, and the base plate of the shielding terminal can shield the top or bottom side of the ground terminal, the third signal pair terminal and the fourth signal pair terminal from electromagnetic waves generated during high-speed transmission.

1: Insulating body

11: Tongue plate

111: First docking slot

112: Second docking slot

113:Limit slot

12: Elevated body

2:High speed terminal group

21: Ground terminal

211: docking department

212:Welding Department

22: First signal pair terminal

221: docking department

222:Welding Department

23: Second signal pair terminal

231: docking department

232:Welding Department

3: Low speed terminal group

31: The third signal pair terminal

311: docking department

312:Welding Department

32: The fourth signal pair terminal

321: docking department

322:Welding Department

4: Shield terminal

41:Substrate

411: Resistance Department

42:Side panel

421: Ground pin

5: Shielding shell

51: docking side

52:Assembly side

6:Back panel

7: Intermateable connector

71:Metal shell

[Picture 1] is a three-dimensional appearance of the electrical connector of this invention.

[Picture 2] is another three-dimensional view of the electrical connector of this invention.

[Picture 3] is a three-dimensional exploded view of the electrical connector of this invention.

[Picture 4] is an exploded three-dimensional view of the electrical connector of this invention from another perspective.

[Picture 5] is a three-dimensional view of the high-speed terminal set, low-speed terminal set and shielding terminal of this creation after assembly.

[Figure 6] is a side cross-sectional view of the electrical connector of this invention before it is connected to the mating connector.

[Figure 7] is a side cross-sectional view of the electrical connector of this invention after mating with the mating connector.

Please refer to Figures 1 to 5, which are respectively a three-dimensional appearance view, a three-dimensional appearance view from another perspective, an exploded perspective view, an exploded perspective view from another perspective, and the high-speed terminal set, low-speed terminal set and shielding of the electrical connector of this invention. From the three-dimensional view of the terminal assembly, it can be clearly seen from the figure that the electrical connector of this invention mainly includes an insulating body 1, a high-speed terminal group 2, a low-speed terminal group 3 and a shielding terminal 4. Its detailed structure and connection relationship are as follows :

The front edge of the tongue plate 11 of the insulating body 1 is provided with a plurality of first butt joint grooves 111 , a plurality of second butt joint grooves 112 and a plurality of limiting grooves 113 in a hollow shape in sequence at the rear.

The high-speed terminal set 2 includes a central connector inserted through the insulating body 1 The ground terminal 21, the first signal pair terminal 22 and the second signal pair terminal 23 located on both sides of the ground terminal 21, the butt portion of the ground terminal 21, the first signal pair terminal 22 and the second signal pair terminal 23 (211, 221, 231) are located in the first docking grooves 111.

The low-speed terminal set 3 includes a third signal pair terminal 31 inserted in the insulating body 1 between the ground terminal 21 and the first signal pair terminal 22 , and a third signal pair terminal 31 located between the ground terminal 21 and the second signal pair terminal. 23 between the fourth signal pair terminals 32, the mating portions (311, 321) of the third signal pair terminals 31 and the fourth signal pair terminals 32 are located in the second mating grooves 112.

The shielding terminal 4 includes a base plate 41 and two sides of the base plate 41 are turned to form side plates 42 that pass through the limiting grooves 113 . The penetration points of the two side plates 42 are respectively located at the first signal pair terminal 22 and the third signal pair terminal 22 . between the signal pair terminals 31, and between the second signal pair terminal 23 and the fourth signal pair terminal 32, and the two side plates 42 of the shielding terminal 4 extend adjacent to the rear end of the tongue plate 11 and are exposed to the There is a grounding pin 421 on the rear side of the insulating body 1 , and the base plate 41 has a resisting portion 411 that abuts outwardly against the inner wall of the metal shell 71 of the preset interconnection connector 7 .

The above-mentioned insulating body 1 is further assembled with a shielding case 5 on the outside. The shielding case 5 has a butt side 51 adjacent to the front edge of the tongue plate 11 and an assembly side 52 away from the front edge of the tongue plate 11. The shielding case 5 has The assembly side 52 is for a back plate 6 to be engaged and fixed, and the shielding case 5 and the back plate 6 are both made of metal materials, which can effectively shield the high-speed terminal group 2 and the low-speed terminal group 3 when transmitting signals. electromagnetic waves at various angles.

The tongue plate 11 of the insulating body 1 further has a tall body 12 extending rearward, and the ground terminal 21, the first signal pair terminal 22, the second signal pair terminal 23, and the ground terminal 21, the first signal pair terminal 22, the second signal pair terminal 23, and the The third signal pair terminal 31 and the fourth signal pair terminal 32 are turned in the elevated body 12 There are exposed welding portions (212, 222, 232, 312, 322) extending horizontally at the bottom and rear respectively.

The aforementioned electrical connector specifications refer to the USB3.1 TYPE-A socket connector. The symbols corresponding to each terminal of this creation are: the pin definition of the ground terminal 21 is (GND_DRAIN); the pin definition of the first signal pair terminal 22 are (SSTX+, SSTX-); the pins of the second signal pair of terminal 23 are defined as (SSRX+, SSRX-); the pins of the third signal pair of terminal 31 are defined as (VBUS, D-); the fourth signal pair of terminal 32 The pins are defined as (GND, D+), and the mating connector 7 corresponding to the electrical connector of the invention refers to a plug connector with USB3.1 TYPE-A specifications.

The above-mentioned shielding terminal 4 is composed of a "U"-shaped (not shown in the figure) or an inverted "U"-shaped plate, and the base plate 41 of the shielding terminal 4 can shield the grounding terminal 21 and the third The top or bottom sides of the three signal pair terminals 31 and the fourth signal pair terminal 32 generate electromagnetic waves during high-speed transmission; and the resisting portion 411 of the shielding terminal 4 is made of elastic pieces or bumps (not shown in the figure). The shielding terminal 4 is formed into the insulating body 1 by insert molding or by pushing the elevated body 12 through a preset pushing fixture (not shown in the figure). Although the aforementioned shielding terminal 4 is an inverted "U"-shaped plate in the implementation structure, by changing the design of the insulating body 1, the "U"-shaped shielding terminal 4 can also be fixed therein. Furthermore, the shielding terminal 4 can also be designed as a long rectangular body with a hollow interior and provided with resisting portions 411 on both the top and bottom surfaces, so that the resisting portions 411 of the shielding terminal 4 can be in contact with the mutual distribution connection at the same time. The simple changes of the shielding terminal 4 at the upper and lower inner walls of the metal shell 71 of the device 7 (as shown in Figure 7) should be included in the protection scope of this invention.

The above-mentioned high-speed terminal group 2 and the low-speed terminal group 3 are formed in the insulating body 1 through the embedded injection process.

When assembling the electrical connector of the present invention, a preferred method is to mold the high-speed terminal set 2, the low-speed terminal set 3 and the shielding terminal 4 into the insulating body 1 through the embedded injection process, and then the insulating body 1 The tongue plate 11 is pushed and inserted into the assembly side 52 of the shielding case 5, and finally the back plate 6 is placed on the assembly side 52 of the shielding case 5 through buckles (not labeled) and buckle grooves (not labeled). One snap is fixed and the purpose is achieved by the aforementioned method.

The main feature of this invention is that the electromagnetic waves generated by the first signal pair terminal 22 and the second signal pair terminal 23 of the high-speed terminal group 2 in the electrical connector when transmitting high-frequency signals can be detected through the shielding terminal 4 located between them. Shielding and absorption, and the first path for the shielding terminal 4 to eliminate electromagnetic waves is to convert the absorbed electromagnetic waves into current through the resisting portion 411 and conduct it to the metal shell 71 of the mating connector 7 , and the metal shell 71 receives the current Then it is guided to the grounding area (not shown in the figure) of the connected first circuit board or the metal shell (not shown in the figure) of the first electronic product for elimination; the second path for the shielding terminal 4 to eliminate electromagnetic waves is through The two ground pins 421 of the shielding terminal 4 convert electromagnetic waves into current and conduct it to the preset second circuit board (not shown in the figure) or the metal shell (not shown in the figure) of the second electronic product for elimination through the first path. and the second path can eliminate crosstalk interference and electromagnetic wave interference problems caused by high-speed terminals when transmitting high-frequency signals. This invention is used in the field of electrical connector manufacturing and has excellent practicability, so a patent application was filed to seek patent protection.

The above descriptions are only preferred embodiments of this invention, and do not limit the patent scope of this invention. Therefore, any simple modifications and equivalent structural changes made by using the contents of the description and drawings of this invention should be similarly included in This creation is within the scope of the patent and is hereby stated.

To sum up, the shielding structure of the above-mentioned electrical connector of this invention can indeed achieve its effect and purpose when used. Therefore, this invention is truly a creation with excellent practicality and is in line with the new The application requirements for a type patent must be filed in accordance with the law. We hope that the review committee will approve this case as soon as possible to protect the creator's hard work. If the review committee of the Jun Bureau has any doubts, please feel free to write a letter and give instructions. The creator will try his best to cooperate and realize his moral integrity. Convenience.

1: Insulating body

11: Tongue plate

111: First docking slot

112: Second docking slot

113:Limit slot

12: Elevated body

2:High speed terminal group

21: Ground terminal

211: docking department

212:Welding Department

22: First signal pair terminal

221: docking department

222:Welding Department

23: Second signal pair terminal

231: docking department

232:Welding Department

3: Low speed terminal group

31: The third signal pair terminal

311: docking department

312:Welding Department

32: The fourth signal pair terminal

321: docking department

322:Welding Department

4: Shield terminal

41:Substrate

411: Resistance Ministry

42:Side panel

421: Ground pin

5: Shielding shell

51: docking side

52:Assembly side

6:Back panel

Claims (7)

A shielding structure of an electrical connector, including: an insulating body, the front edge of the tongue plate of which is provided with a plurality of first butt-shaped hollow grooves, a plurality of second butt grooves and a plurality of limiting grooves in order; a high-speed terminal group, which It includes a ground terminal located in the center of the insulating body, and a first pair of signal terminals and a second pair of signal terminals located on both sides of the ground terminal. The ground terminal, the first pair of signal terminals and the second signal pair The mating parts of the terminals are located in the first mating slots; a low-speed terminal group including a third signal pair terminal inserted in the insulating body between the ground terminal and the first signal pair terminal, and a fourth signal pair terminal located between the ground terminal and the second signal pair terminal, the mating portion of the third signal pair terminal and the fourth signal pair terminal is located in the second mating slots; and a shielding terminal , which includes a base plate and two sides of the base plate are turned to form side plates that pass through the limiting grooves. The penetration points of the two side plates are respectively located between the first pair of signal terminals and the third pair of signal terminals, and the Between the second signal pair terminal and the fourth signal pair terminal, the two side plates of the shielding terminal extend adjacent to the rear end of the tongue plate with a ground pin exposed on the rear side of the insulating body, and the substrate has The resisting portion is outwardly abutted against the inner wall of the metal housing of the predetermined mating connector. The shielding structure of the electrical connector as claimed in claim 1, wherein a shielding shell is further assembled outside the insulating body, and the shielding shell has a butt side adjacent to the front edge of the tongue plate and an assembly side away from the front edge of the tongue plate. The assembled side of the shielding shell is provided with a back plate for snap-fastening. The shielding structure of the electrical connector as claimed in claim 1, wherein the tongue plate of the insulating body further extends rearward with a tall body, which penetrates the ground terminal, the first signal pair terminal, and the The second pair of signal terminals, the third pair of signal terminals and the fourth pair of signal terminals each have an exposed welding portion extending horizontally after turning downward in the elevated body. The shielding structure of the electrical connector as described in claim 1, wherein the shielding terminal is composed of a "U"-shaped or inverted "U"-shaped plate, and the base plate of the shielding terminal can shield the ground The top or bottom sides of the terminal, the third signal pair terminal and the fourth signal pair terminal generate electromagnetic waves during high-speed transmission. The shielding structure of the electrical connector according to claim 1, wherein the resisting portion of the shielding terminal is composed of a spring piece or a bump. The shielding structure of the electrical connector as claimed in claim 1, wherein the shielding terminal is molded into the insulating body through a buried injection process, or is moved from an elevated body through a preset moving fixture. The shielding structure of the electrical connector according to claim 1, wherein the high-speed terminal group and the low-speed terminal group are formed in the insulating body through a buried injection process.

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