Shielding structure, electric connector and connector assembly

Abstract

The utility model discloses a shielding structure, an electric connector and a connector assembly, which belong to the field of electric connectors, the shielding structure is used for shielding the electric connector and comprises a metal shell, a first grounding piece and a second grounding piece, and the first grounding piece and the second grounding piece are respectively arranged on two sides of a cable of the electric connector. The first grounding piece and the second grounding piece are electrically connected with a shielding layer of a cable of the electric connector, the first grounding piece is electrically connected with a grounding terminal of the electric connector, the first grounding piece is provided with an extending part, and the extending part is electrically connected with the metal shell. According to the shielding structure, the electric connector and the connector assembly provided by the utility model, the extension part is additionally arranged at the first grounding piece, so that stable connection between the first grounding piece and the metal shell can be effectively ensured. Furthermore, stable conduction among the grounding terminal, the coaxial line shielding layer connected with the signal terminal and the metal shell is achieved. The electromagnetic interference shielding effectiveness of the metal shell can be fully exerted, and the problem that wires are scalded possibly in a traditional mode is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of electrical connectors, and particularly relates to a shielding structure, an electrical connector, and a connector assembly. Background Technology

[0002] In electrical connectors, especially LVDS connectors (low-voltage differential signal connectors), in order to fully utilize the electromagnetic interference (EMI) shielding effect of the connector's metal shell, the shielding layer of the grounding terminal and the coaxial line connected to the signal terminal needs to achieve stable conductivity with the metal shell.

[0003] Currently, the conventional method for achieving conductivity is to establish a connection between the grounding component, the grounding terminal, and the shielding layer of the coaxial cable, and then add solder through an opening in the metal shell to establish conductivity between the metal shell and the grounding component. However, this conventional method has significant drawbacks. On the one hand, when the opening in the metal shell is small, the soldering operation is very inconvenient, and poor soldering is prone to occur during the soldering process. This results in unstable conductivity between the grounding terminal of the electrical connector and the shielding layer of the coaxial cable connected to the signal terminal, as well as the metal shell, thus affecting the EMI shielding effect of the electrical connector. This makes the electrical connector more susceptible to external electromagnetic interference during operation, reducing the stability and reliability of signal transmission. On the other hand, when the opening in the metal shell is large, the solder can easily flow during the soldering process, potentially burning the wire. This not only damages the wire and affects the normal use of the entire connector but also increases the defect rate and cost in the production process. Furthermore, traditionally, the upper and lower grounding components are located on the upper and lower sides of the coaxial cable. When soldering the grounding components, the upper and lower grounding components generate high temperatures. If there are electronic wires sandwiched between the upper and lower grounding components, the insulation layer of the electronic wires can easily be burned, resulting in poor insulation withstand voltage. To avoid this problem, the current practice is as follows:

[0004] 1. All wires soldered to LVDS connectors are coaxial cables, eliminating the need for electronic wires. Disadvantage: Some control signal and power transmission pins could have been connected with ordinary electronic wires, so the use of coaxial cables is necessary, leading to increased costs.

[0005] 2. Completely separate coaxial cables and electronic wires, using all coaxial cables on one side and all electronic wires on the other. Disadvantage: Pins for transmitting high-speed signals must be concentrated on one side, while pins for transmitting power must be concentrated on the other side, greatly limiting pin definitions and client wiring layout. Summary of the Invention

[0006] The purpose of this invention is to provide a shielding structure, an electrical connector, and a connector assembly to overcome at least one of the aforementioned defects in the prior art.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] The shielding structure provided by this utility model is used for shielding electrical connectors. It includes a metal shell, a first grounding component, and a second grounding component. The first grounding component and the second grounding component are respectively disposed on both sides of the cable of the electrical connector and are electrically connected to the shielding layer of the cable of the electrical connector. The first grounding component is electrically connected to the grounding terminal of the electrical connector. The first grounding component has an extension portion, which is electrically connected to the metal shell.

[0009] Preferably, the first grounding member further includes a main body and conductive parts, the main body having a plurality of conductive parts for electrical connection with the grounding terminals of the electrical connector, and an extension is provided on the main body.

[0010] Preferably, both the conductive part and the extension part are integrally formed with the main body.

[0011] Preferably, the conductive portion is disposed on one side of the main body, and the extension portion is disposed on the opposite side of the main body.

[0012] Preferably, a plurality of conductive parts are distributed at intervals along the length direction of the main body.

[0013] Preferably, the first grounding component and the second grounding component are electrically connected.

[0014] Preferably, the metal casing includes a first casing and a second casing, the first casing and the second casing are snapped together, and the extension is electrically connected to the first casing.

[0015] This utility model also provides an electrical connector, including a conductive terminal group, a cable, and the aforementioned shielding structure. The conductive terminal group is disposed within the shielding structure and extends out of the shielding structure. One end of the cable extends into the shielding structure and is electrically connected to the conductive terminal group.

[0016] Preferably, the cable is a coaxial cable.

[0017] Preferably, it also includes an electronic wire, one end of which extends into the shielding structure and is electrically connected to the conductive terminal group.

[0018] Preferably, the cables are divided into several groups, and the electronic wires are arranged at least between two adjacent groups of cables.

[0019] Preferably, the electronic wire includes a conductor and an insulating layer covering the conductor, the conductor being electrically connected to a conductive terminal group, and the insulating layer being placed above the second grounding member.

[0020] Preferably, the conductive terminal group includes a signal terminal, a ground terminal, and an insulator, wherein the signal terminal and the ground terminal are both fixed to the insulator, and the insulator is mounted on a metal shell.

[0021] Preferably, at least one signal terminal pair is provided between two adjacent grounding terminals, and each signal terminal pair includes at least two signal terminals.

[0022] This invention also provides a connector assembly, including the aforementioned electrical connector and a mating connector that mates with the electrical connector.

[0023] The beneficial effects of this utility model are as follows:

[0024] 1. The innovative design of adding an extension at the first grounding component effectively ensures a stable connection between the first grounding component and the metal casing. Furthermore, it achieves stable conductivity between the grounding terminal, the coaxial cable shielding layer connected to the signal terminal, and the metal casing. This connection method fully utilizes the electromagnetic interference (EMI) shielding effectiveness of the metal casing, avoiding the wire burn problem that may occur in traditional methods. Moreover, the entire operation process is simpler and faster, significantly improving production efficiency and product quality.

[0025] 2. By connecting each grounding terminal through several conductive parts, a unified grounding reference plane can be formed, reducing the potential difference between different grounding terminals, reducing signal interference and noise, improving signal integrity and stability, and ensuring that the electrical connector can accurately transmit signals.

[0026] 3. The conductive part and the extension part are integrally formed with the main body, which not only reduces resistance but also improves signal stability, and has good mechanical strength and stability, making it easy to manufacture.

[0027] 4. The first and second grounding components are electrically connected, which not only optimizes the grounding effect but also equalizes the potential distribution and enhances the shielding effectiveness.

[0028] 5. The first and second shells are snapped together, which improves the ease of assembly and disassembly.

[0029] 6. Since the first grounding component is electrically connected to the metal shell through the extension, it is not necessary to open a hole from the top of the metal shell to add solder. Therefore, the second grounding component is allowed to have a gap between the metal shells. The insulation layer of the electronic wire can be placed on top of the second grounding component. Electronic wires can be sandwiched between cables, or cables and electronic wires can be alternately set to meet the circuit distribution requirements, improve the flexibility of pin definition, and will not cause the insulation layer of the electronic wire to be burned. The cost is low. Attached Figure Description

[0030] Figure 1 This is a three-dimensional exploded structural diagram of Embodiment 1 of this utility model.

[0031] Figure 2 This is a three-dimensional exploded view of the shielding structure and cable of Embodiment 1 of this utility model.

[0032] Figure 3 This is a top view schematic diagram of the shielding structure, cable, and part of the conductive terminal group of Embodiment 1 of this utility model.

[0033] Figure 4 This is a top view of the first grounding component in Embodiment 1 of this utility model.

[0034] Figure 5 This is a front view schematic diagram of the shielding structure, cable, and conductive terminal group of Embodiment 1 of this utility model.

[0035] Figure 6 yes Figure 5 A magnified structural diagram of A in the middle.

[0036] Figure 7 This is a three-dimensional structural diagram of Embodiment 2 of this utility model.

[0037] Figure 8 This is a top view of the structure of Embodiment 2 of this utility model (excluding the second shell).

[0038] Figure 9 This is a three-dimensional exploded view of the conductive terminal group in Embodiment 2 of this utility model.

[0039] Figure 10 This is a three-dimensional structural schematic diagram of Embodiment 3 of this utility model.

[0040] The labels in the attached diagram are as follows: 1-metal shell, 2-first grounding component, 3-second grounding component, 21-extension, 22-main body, 23-conductive part, 11-first shell, 12-second shell, 4-conductive terminal group, 5-cable, 51-shielding layer, 6-electronic wire, 61-conductor, 62-insulating layer, 41-signal terminal, 42-grounding terminal, 43-insulator, 7-connector. Detailed Implementation

[0041] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0042] Contents not described in detail in this specification are existing technologies known to those skilled in the art. In the description of this utility model, it should be understood that terms such as "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model. Furthermore, terms such as "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0043] Example 1:

[0044] like Figures 1 to 6 As shown, the shielding structure provided in this embodiment is used for shielding an electrical connector. It includes a metal shell 1, a first grounding element 2, and a second grounding element 3. The first grounding element 2 and the second grounding element 3 are respectively disposed on both sides of the cable 5 of the electrical connector and are both electrically connected to the shielding layer 51 of the cable 5. The first grounding element 2 is electrically connected to the grounding terminal 42 of the electrical connector. The first grounding element 2 has an extension 21, which is electrically connected to the metal shell 1. In this embodiment, the first grounding element 2 is located below the cable 5, and the second grounding element 3 is located above the cable 5. The cable 5 is a coaxial cable, the metal shell 1 is made of iron, and the electrical connector is an LVDS connector. During processing, the extension 21 added to the first grounding element 2 is pressed downwards to make it tightly fit the metal shell 1. Then, a spot welding operation is performed directly using a welding gun to achieve a reliable electrical connection between the extension 21 and the metal shell 1.

[0045] The innovative design of adding an extension 21 at the first grounding component 2 effectively ensures a stable connection between the first grounding component 2 and the metal shell 1. Furthermore, stable conductivity is achieved between the grounding terminal 42, the coaxial cable shielding layer 51 connected to the signal terminal 41, and the metal shell 1. This connection method fully utilizes the electromagnetic interference (EMI) shielding effectiveness of the metal shell 1, avoiding the wire burn problem that may occur in traditional methods. Moreover, the entire operation process is simpler and faster, significantly improving production efficiency and product quality.

[0046] The first grounding component 2 further includes a main body 22 and conductive portions 23. The main body 22 has a plurality of conductive portions 23 for electrical connection with the grounding terminals 42 of the electrical connector, and an extension portion 21 is disposed on the main body 22. Specifically, the conductive portions 23 are disposed on the rear side of the main body 22, and the extension portion 21 is disposed on the front side of the main body 22. The plurality of conductive portions 23 are spaced apart along the length direction of the main body 22. By connecting the various grounding terminals 42 through the plurality of conductive portions 23, a unified grounding reference plane can be formed, reducing the potential difference between different grounding terminals 42, reducing signal interference and noise, improving signal integrity and stability, and ensuring that the electrical connector can accurately transmit signals.

[0047] Both the conductive part 23 and the extension part 21 are integrally formed with the main body part 22. This not only reduces resistance but also improves signal stability, and provides good mechanical strength and stability, making it easy to manufacture.

[0048] In this embodiment, the first grounding component 2 and the second grounding component 3 are electrically connected. This not only optimizes the grounding effect but also homogenizes the potential distribution and enhances the shielding effectiveness. In this embodiment, the first grounding component 2 and the second grounding component 3 are electrically connected by welding. In other embodiments, the electrical connection can also be achieved by pressing the first grounding component 2 and the second grounding component 3 into close contact.

[0049] The metal casing 1 includes a first casing 11 and a second casing 12, which are snapped together. The extension 21 is electrically connected to the first casing 11. The snap-fit ​​connection between the first casing 11 and the second casing 12 improves the ease of assembly and disassembly.

[0050] Example 2:

[0051] like Figures 7 to 9 As shown, this embodiment provides an electrical connector, including a conductive terminal group 4, a cable 5, an electronic wire 6, and a shielding structure as described in Embodiment 1. The conductive terminal group 4 is disposed within and extends beyond the shielding structure. The rear end of the cable 5 extends into the shielding structure and is electrically connected to the conductive terminal group 4. The rear end of the electronic wire 6 extends into the shielding structure and is electrically connected to the conductive terminal group 4. The cable 5 is divided into several groups, and the electronic wire 6 is disposed at least between two adjacent groups of cables 5. In this embodiment, there are two groups of cables 5, and the electronic wire 6 is sandwiched between the left and right groups of cables 5. In other embodiments, the cable 5 and the electronic wire 6 can be alternately disposed. The cable 5 is a coaxial cable. The electronic wire 6 includes a conductor 61 and an insulating layer 62 covering the conductor 61. The conductor 61 is electrically connected to the conductive terminal group 4, and the insulating layer 62 rests on top of the second grounding member 3. Since the first grounding member 2 is electrically connected to the metal shell 1 through the extension 21, it is not necessary to open a hole from the top of the metal shell 1 to add solder. Therefore, a gap is allowed between the second grounding member 3 and the metal shell 1. The insulation layer 62 of the electronic wire 6 can be placed on top of the second grounding member 3. The electronic wire 6 can be sandwiched between the cables 5, or the cables 5 and the electronic wire 6 can be alternately set to meet the circuit distribution requirements, improve the pin definition flexibility, and will not cause the insulation layer 62 of the electronic wire 6 to be burned, and the cost is low.

[0052] The conductive terminal group 4 includes signal terminals 41, ground terminals 42, and an insulator 43. Both signal terminals 41 and ground terminals 42 are fixed to the insulator 43, which is mounted on the metal housing 1. Each pair of adjacent ground terminals 42 is connected to a signal terminal pair, and each signal terminal pair includes at least two signal terminals 41. For systems employing differential signal transmission (such as many high-speed data interfaces), the presence of the ground terminals 42 better supports differential signal transmission, further improving signal anti-interference capability and transmission performance. Differential signals have a strong ability to suppress common-mode interference, and the proper layout of the ground terminals 42 can enhance this suppression effect.

[0053] Example 3:

[0054] like Figure 10 As shown, the embodiment provides a connector assembly, including the electrical connector of embodiment two and a mating connector 7 that mates with the electrical connector.

[0055] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A shielding structure for shielding electrical connectors, characterized in that: It includes a metal shell (1), a first grounding component (2), and a second grounding component (3); The first grounding component (2) and the second grounding component (3) are respectively disposed on both sides of the cable (5) of the electrical connector, and are both electrically connected to the shielding layer (51) of the cable (5) of the electrical connector; The first grounding member (2) is electrically connected to the grounding terminal (42) of the electrical connector. The first grounding member (2) has an extension (21) which is electrically connected to the metal shell (1).

2. The shielding structure according to claim 1, characterized in that: The first grounding member (2) also includes a main body (22) and a conductive part (23); The main body (22) has a plurality of conductive parts (23) for electrical connection with the grounding terminal (42) of the electrical connector. The extension (21) is disposed on the main body (22).

3. The shielding structure according to claim 2, characterized in that: Both the conductive part (23) and the extension part (21) are integrally formed with the main body part (22).

4. The shielding structure according to claim 2, characterized in that: The conductive part (23) is disposed on one side of the main body (22), and the extension part (21) is disposed on the opposite side of the main body (22).

5. The shielding structure according to claim 2, characterized in that: Several of the conductive portions (23) are spaced apart along the length direction of the main body portion (22).

6. The shielding structure according to claim 1, characterized in that: The first grounding component (2) and the second grounding component (3) are electrically connected.

7. The shielding structure according to claim 1, characterized in that: The metal shell (1) includes a first shell (11) and a second shell (12); The first shell (11) and the second shell (12) are snapped together; The extension (21) is electrically connected to the first shell (11).

8. An electrical connector, characterized in that: Includes conductive terminal group (4), cable (5), and shielding structure as described in any one of claims 1-7; The conductive terminal group (4) is disposed within the shielding structure and extends out of the shielding structure; One end of the cable (5) extends into the shielding structure and is electrically connected to the conductive terminal group (4).

9. The electrical connector according to claim 8, characterized in that: The cable (5) is a coaxial cable.

10. The electrical connector according to claim 8, characterized in that: It also includes electron wires (6); One end of the electronic wire (6) extends into the shielding structure and is electrically connected to the conductive terminal group (4).

11. The electrical connector according to claim 10, characterized in that: The cables (5) are divided into several groups, and the electronic wires (6) are at least located between two adjacent groups of cables (5).

12. The electrical connector according to claim 10, characterized in that: The electronic wire (6) includes a conductor (61) and an insulating layer (62) covering the conductor (61). The conductor (61) is electrically connected to the conductive terminal group (4); The insulating layer (62) is placed on top of the second grounding member (3).

13. The electrical connector according to claim 8, characterized in that: The conductive terminal group (4) includes a signal terminal (41), a ground terminal (42), and an insulator (43); The signal terminal (41) and the ground terminal (42) are both fixed to the insulator (43). The insulator (43) is mounted on the metal shell (1).

14. The electrical connector according to claim 13, characterized in that: At least one pair of signal terminals (41) is provided between two adjacent grounding terminals (42); Each signal terminal (41) pair includes at least two signal terminals (41).

15. A connector assembly, characterized in that: Includes the electrical connector as described in any one of claims 8-14, and a mating connector (7) that mates with the electrical connector.

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