TWM650095U - 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 hollow-shaped first butt-joint grooves, a plurality of second butt-joint 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 substrate has a resisting portion that abuts outwardly against the inner wall of the metal housing of the mating connector.

Description

Shielding structure of electrical connector

This invention relates to a shielding structure of an electrical connector, and specifically refers to an electromagnetic wave generated by the first signal pair terminal and the second signal pair terminal of a high-speed terminal set in an electrical connector when transmitting high-frequency signals, which can pass through the two The shielding terminal in between is shielded and absorbed, and the shielding terminal converts the absorbed electromagnetic wave through the resisting part to form a current and conducts it to the metal shell of the mating connector, and the current received by the metal shell is then guided to the By eliminating it in the grounding area of the circuit board or in the metal casing of the electronic product, you can eliminate the crosstalk interference and electromagnetic interference problems caused by high-speed terminals when transmitting high-frequency signals.

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, their As the number of terminal groups increases and their distribution becomes more dense, it is very 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 connector itself will The problem of signal interference will become more serious. For high-frequency connectors, among many signal integrity issues, the size of electromagnetic interference (EMI) has a great relationship with how the internal system grounding area of electronic products is designed. USB3. 1 TYPE-A connector, including two low-speed terminals (D+, D-) and power/ground terminals (VBUS, GND) at the back end of the docking end, and four high-speed terminals (SSTX+, SSTX) at the back end of the docking end. -, SSRX+, SSRX-) and the ground terminal located in the center. When the high-speed terminal transmits high-frequency signals, it is easy to cause crosstalk interference and electromagnetic wave interference, causing the high-frequency transmission to fail to meet the predetermined standards. How to solve the aforementioned problems remains to be seen. Those engaged in this industry should study and overcome them.

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 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. , while the substrate has an outward abutment The resisting portion at 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 is further used. The resisting portion converts the absorbed electromagnetic waves into currents and conducts them to the metal shell of the mating connector. The current received by the metal shell is then directed to the grounding area of the connected circuit board or the metal shell of the electronic product for elimination. , it can eliminate crosstalk interference and electromagnetic wave interference problems caused by high-speed terminals when transmitting high-frequency signals.

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 invention is that the shielding terminal is composed of a "U"-shaped or inverted "U"-shaped plate, and the substrate of the shielding terminal can shield the ground terminal and the third signal pair terminal. And the electromagnetic wave generated by high-speed transmission on the top side or bottom side of the fourth signal pair terminal.

Another object of this invention is that the two side plates of the shielding terminal further have a protruding portion adjacent to the rear end of the tongue plate that is deeply engaged with the limiting groove.

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:Protrusion

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 ground terminal 21 located in the center of the insulating body 1, and a first pair of signal terminals 22 and a second pair of signal terminals 23 located on both sides of the ground terminal 21. The ground terminals 21, The mating portions (211, 221, 231) of the first pair of signal terminals 22 and the second pair of signal terminals 23 are located in the first mating 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 2 and the ground terminal 2 . 1 and the fourth signal pair terminal 32 between the second signal pair terminal 23, the mating portions (311, 321) of the third signal pair terminal 31 and the fourth signal pair terminal 32 are located in the second mating slots 112 in.

The shielding terminal 4 includes a base plate 41 and two sides of the base plate 41 are turned to form side plates 42 passing 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 pair of signal terminals 31 , and between the second pair of signal terminals 23 and the fourth pair of signal terminals 32 , and the substrate 41 has a metal shell 71 that abuts outwardly on the preset interconnection connector 7 The resisting portion 411 at the wall.

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 downward in the elevated body 12 and each has an exposed welding portion (212, 222, 232, 312, 322) extending horizontally.

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 pin position is defined as (GND, D+), and this The mating connector 7 for corresponding joining of the electrical connector refers to a plug connector with the specification of USB3.1 TYPE-A.

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 two side plates 42 of the shielding terminal 4 have deep engagement adjacent to the rear end of the tongue plate 11 There is a protruding portion 421 in the limiting groove 113; the resisting portion 411 of the shielding terminal 4 is made of elastic pieces or bumps (not shown in the figure); and the shielding terminal 4 is ejected through embedding. Insert Molding, or the elevated body 12 is pushed and molded into the insulating body 1 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 shielding terminal 4 converts the absorbed electromagnetic waves through the resisting portion 411 to form a current and conducts it to the metal shell 71 of the mating connector 7 , and the current received by the metal shell 71 is then guided to the connected By eliminating them in the grounding area of the circuit board (not shown in the picture) or the metal casing of the electronic product (not shown in the picture), the crosstalk interference and electromagnetic wave interference problems caused by high-speed terminals when transmitting high-frequency signals can be eliminated. 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 meets the application requirements for a new patent. It is filed in accordance with the law. Application, hoping that the review committee will approve this case as soon as possible to protect the creator's hard work. If the review committee of Jun Bureau has any doubts, please feel free to send a letter for instructions. The creator will do its best to cooperate. I feel that it will be convenient.

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:Protrusion

5: Shielding shell

51: docking side

52:Assembly side

6:Back panel

Claims (8)

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 hollow-shaped first butt-joint grooves, a plurality of second butt-joint grooves and a plurality of limiting grooves in sequence; 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 pair of signal terminals and the fourth pair of signal terminals, the substrate has a resisting portion that abuts outwardly against the inner wall of the metal shell of the default mutual-mark connector. The shielding structure of an 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 insulating body The tongue plate further extends rearward with a tall body, which penetrates the ground terminal, the first signal pair terminal, the second signal pair terminal, the third signal pair terminal and the fourth signal pair terminal in the tongue plate. In the elevated body, there are exposed welding portions extending horizontally after turning downward. 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 an electrical connector as claimed in claim 1, wherein the two side plates of the shielding terminal further have a protruding portion adjacent to the rear end of the tongue plate that engages deeply in the limiting groove. 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 an 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 an electrical connector as claimed in 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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