Terminal structure and connector of USB connector

Abstract

The application relates to the technical field of connectors, in particular to a terminal structure of a USB connector and the connector. The terminal structure of the USB connector comprises a USB3.0 terminal group and a USB2.0 terminal group. The USB3.0 terminal group comprises a two-difference signal terminal group and a USB3.0 grounding terminal. The USB2.0 terminal group comprises a power terminal, a signal terminal group and a USB2.0 grounding terminal. The USB3.0 grounding terminal is connected with the USB2.0 grounding terminal. In the application, the grounding terminal of the USB3.0 terminal group is connected with the grounding terminal of the USB2.0 terminal group to generate a channel, which can play a shielding role between the USB2.0 low-speed terminal and the USB3.0 high-speed terminal, prevents low-frequency signals and high-frequency signals from causing crosstalk, and makes the USB3.0 high-frequency terminal meet the high-frequency transmission requirement of USB3.1.

Description

Technical Field

[0001] This application relates to the field of connector technology, and in particular to a terminal structure and connector for a USB connector. Background Technology

[0002] In the field of modern electronic devices, the USB 3.0 connector, with its high-speed data transmission capabilities, has become a key interface for data interaction among numerous devices. USB 3.0 introduces high-speed differential signal transmission, significantly improving data transmission rates and representing a qualitative leap in performance compared to its predecessor, USB 2.0. To achieve broad compatibility, USB 3.0 connectors typically include both USB 3.0 and USB 2.0 terminal groups to meet the different data transmission needs of various devices. Among these, the terminal, as the core component responsible for signal transmission, plays a decisive role in the stability and efficiency of data transmission due to its structural design. Terminals with different functions, such as the differential signal terminals and ground terminals in the USB 3.0 terminal group responsible for high-speed signal transmission, and the power terminals, signal terminal groups, and ground terminals in the USB 2.0 terminal group responsible for low-frequency signal transmission, work together to complete the data interaction task between devices.

[0003] In existing USB 3.0 connector terminal structures, the USB 3.0 terminal group and the USB 2.0 terminal group operate independently. The USB 3.0 terminal group includes differential signal terminal groups and ground terminals, responsible for high-speed signal transmission; the USB 2.0 terminal group consists of power terminals, signal terminal groups, and ground terminals, undertaking low-frequency signal transmission and power supply functions. The two types of terminal groups are arranged in a specific layout inside the connector to meet the signal transmission requirements of USB 3.0 and USB 2.0 respectively, ensuring the connector's compatibility with different devices.

[0004] In the current USB 3.0 connector terminal structure, crosstalk easily occurs between the low-frequency signals transmitted by the USB 2.0 terminal group and the high-frequency signals transmitted by the USB 3.0 terminal group. This leads to signal distortion and packet loss during data transmission, severely reducing the stability and reliability of data transmission. With the increasing demand for data transmission rates, this crosstalk problem has become a key obstacle restricting the upgrade of USB 3.0 connectors to higher-frequency transmission standards (such as USB 3.1), failing to meet the urgent needs of modern electronic devices for high-speed and stable data interaction. Utility Model Content

[0005] To address the problem of frequent crosstalk when high-frequency and low-frequency signals are transmitted simultaneously, which seriously affects the stability and speed of data transmission, this application provides a terminal structure and connector for a USB connector.

[0006] The terminal structure and connector of the USB connector provided in this application adopt the following technical solution: On one hand, a terminal structure for a USB connector includes: The USB 3.0 terminal block includes a dual differential signal terminal block and a USB 3.0 ground terminal; and The USB 2.0 terminal block includes a power terminal block, a signal terminal block, and a USB 2.0 ground terminal block, wherein the USB 3.0 ground terminal block is connected to the USB 2.0 ground terminal block.

[0007] Optionally, both the USB 2.0 terminal group and the USB 3.0 ground terminal are located between the two differential signal terminal groups.

[0008] Optionally, the USB 3.0 ground terminal is connected to the USB 2.0 ground terminal via a connecting part, which extends from the USB 3.0 ground terminal to the area between the signal terminal group and the USB 2.0 ground terminal.

[0009] Optionally, the middle portion of the connection part and the middle portion of the differential signal terminal group are arranged aligned on the same plane.

[0010] Optionally, the connection portion includes a bent section and an extended section, the bent section being bent from the USB 3.0 ground terminal in a direction away from the signal terminal group, such that the extended section is located below the USB 2.0 ground terminal.

[0011] Optionally, the differential signal terminal group includes two differential signal terminals, and the differential signal terminal includes a first contact portion, a first fixing portion and a first solder portion connected in sequence; The signal terminal group includes two signal terminals, and each signal terminal includes a second contact portion, a second fixing portion, and a second soldering portion connected in sequence. The first welded part and the second welded part are arranged aligned on the same plane.

[0012] Optionally, the first fixed part includes a first bent section and a first extension section, the first contact part, the first bent section, the first extension section and the first welded part are connected in sequence, the first bent section bends from the first contact part in a direction away from the second contact part, so that the first extension section is located below the second fixed part.

[0013] Optionally, the first contact portion is located below the second contact portion.

[0014] Optionally, the USB 3.0 terminal block and the USB 2.0 terminal block are integrally stamped.

[0015] On the other hand, a connector includes the terminal structure of a USB connector as described above.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. The USB 3.0 ground terminal and the USB 2.0 ground terminal are connected by a connector to form a shielding barrier, which greatly reduces electromagnetic cross-interference between high-frequency signals and low-frequency signals, enabling the USB 3.0 high-frequency terminal to meet the high-frequency transmission requirements of USB 3.1.

[0017] 2. The layered structure of the first contact portion and the second contact portion, the layout of the first extension section located below the second fixed portion, and the upper and lower layered structure of the extension section of the connecting portion make full use of the internal space of the connector without increasing the lateral dimension, reduce the overall volume of the connector, and meet the development needs of miniaturization of electronic devices.

[0018] 3. The middle part of the connection section and the middle part of the differential signal terminal group are arranged on the same plane, making the layout of each component more compact and orderly. This avoids signal transmission path distortion or interference superposition caused by structural misalignment, and reduces the risk of attenuation or distortion of high-frequency signals during transmission due to unreasonable spatial structure.

[0019] 4. The first and second welding parts are arranged in alignment on the same plane, which ensures that each welding part has a consistent welding height and contact stability when connected to the external circuit. This avoids welding gaps or poor contact caused by height differences, and ensures the reliability of the connection between high-frequency and low-frequency signals at the transmission endpoint.

[0020] 5. The USB 3.0 terminal block and USB 2.0 terminal block adopt an integrated stamping forming method, and the alignment setting of the connection part with the differential signal terminal block reduces the complex operation and precision error in the stamping process, improves production efficiency and product qualification rate, thereby reducing manufacturing costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the terminal structure of the USB connector in the embodiments of this application from one perspective; Figure 2 This is a schematic diagram of the terminal structure of the USB connector in the embodiments of this application from another perspective; Figure 3 This is a schematic diagram of the terminal structure of the USB connector in the embodiments of this application from another perspective; Figure 4 This is a side view of the terminal structure of the USB connector in an embodiment of this application.

[0022] Explanation of reference numerals in the attached figures: 1. USB 3.0 terminal block; 11. Differential signal terminal block; 111. First contact portion; 112. First fixing portion; 112a. First bending section; 112b. First extension section; 113. First soldering portion; 12. USB 3.0 ground terminal; 2. USB 2.0 terminal block; 21. Power terminal; 22. Signal terminal block; 221. Second contact; 222. Second fixing part; 223. Second soldering part; 23. USB 2.0 ground terminal; 3. Connecting section; 31. Bending section; 32. Extension section. Detailed Implementation

[0023] The following will be combined with the appendix Figure 1-4 The technical solutions in the embodiments of this application are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0024] This application discloses a terminal structure and connector for a USB connector. The connector includes a housing, an insulating colloid inside the housing, and a conductive terminal group, wherein the conductive terminal group is embedded in the insulating colloid. The innovation of this application mainly lies in the conductive terminal group, which will be described in detail below (i.e., the terminal structure of the USB connector).

[0025] Reference Figure 1 The terminal structure of the USB connector includes a USB 3.0 terminal group 1 and a USB 2.0 terminal group 2. The USB 3.0 terminal group 1 and the USB 2.0 terminal group 2 are integrally stamped, which can ensure the stability of the connection and the consistency of the structure between the USB 3.0 terminal group 1 and the USB 2.0 terminal group 2, reduce the error in the assembly process, and also improve production efficiency.

[0026] Combination Figure 1 and Figure 2 The USB 3.0 terminal block 1 includes two differential signal terminal blocks 11 and a USB 3.0 ground terminal 12. The USB 3.0 ground terminal 12 is located between the two differential signal terminal blocks 11 and arranged side by side. Each differential signal terminal block 11 includes two differential signal terminals. One differential signal terminal block 11 includes a positive receive terminal and a negative receive terminal, while the other differential signal terminal block 11 includes a positive output terminal and a negative output terminal.

[0027] Each differential signal terminal includes a first contact portion 111, a first fixing portion 112, and a first soldering portion 113 connected in sequence. The first contact portion 111 is used for signal contact with external devices, the first fixing portion 112 is used to fix the differential signal terminal in the insulating colloid, and the first soldering portion 113 is used for soldering connection with external circuits to realize signal transmission.

[0028] Combination Figure 1 and Figure 2 The USB 2.0 terminal group 2 is located between two differential signal terminal groups 11. The USB 2.0 terminal group 2 includes a power terminal 21, a signal terminal group 22 and a USB 2.0 ground terminal 23 arranged in parallel. The signal terminal group 22 includes two signal terminals.

[0029] Each signal terminal includes a second contact portion 221, a second fixing portion 222, and a second soldering portion 223 connected in sequence. The second contact portion 221 is used for signal contact with external devices, the second fixing portion 222 is used to fix the signal terminal in the insulating colloid, and the second soldering portion 223 is used for soldering to external circuits to realize the transmission of low-frequency signals.

[0030] The first contact portion 111 is located below the second contact portion 221. The first contact portion 111 serves as the signal contact area for the USB 3.0 differential signal terminal, while the second contact portion 221 serves as the signal contact area for the USB 2.0 signal terminal. The two are physically separated in the vertical direction, which significantly reduces electromagnetic crosstalk between high-frequency and low-frequency signals during the contact transmission phase, lowers the probability of signal crosstalk, and ensures the purity and stability of both types of signal transmission. Simultaneously, the layered structure eliminates the need for excessive horizontal spacing, enabling the orderly arrangement of different terminal groups within the limited connector space. This helps reduce the overall size of the connector and adapts to the miniaturization trend of electronic devices.

[0031] The first welding part 113 and the second welding part 223 are arranged in alignment on the same plane, so that each welding part can maintain a consistent welding height and contact stability when connected to the external circuit, avoiding welding gaps or poor contact caused by height differences, ensuring the reliability of high-frequency signals and low-frequency signals at the transmission endpoint, and reducing signal loss during transmission.

[0032] Reference Figure 2The first fixing part 112 includes a first bent section 112a and a first extension section 112b. The first contact part 111, the first bent section 112a, the first extension section 112b and the first welding part 113 are connected in sequence. The first bent section 112a bends from the first contact part 111 in a direction away from the second contact part 221, so that the first extension section 112b is located below the second fixing part 222. The upper and lower layered structure reduces the wiring distance with the USB 2.0 VBUS terminal, makes full use of the internal space of the connector, achieves a compact arrangement of the terminal group without increasing the lateral size, optimizes far-end crosstalk, and meets the high-frequency transmission requirements of USB 3.1.

[0033] Reference Figure 1 The USB 3.0 ground terminal 12 and the USB 2.0 ground terminal 23 are connected by a connecting part 3, which extends from the USB 3.0 ground terminal 12 to the area between the signal terminal group 22 and the USB 2.0 ground terminal 23. Since USB 2.0 primarily handles low-frequency signals, while USB 3.0 is responsible for high-frequency signal transmission, in situations with frequent data exchange, without effective shielding measures, low-frequency signals and high-frequency signals are highly susceptible to mutual interference, i.e., crosstalk.

[0034] The ground terminal of USB 3.0 terminal group 1 is connected to the ground terminal of USB 2.0 terminal group 2. The resulting path acts as a barrier, effectively blocking the mutual interference between high and low frequency signals, thereby ensuring the stability of signal transmission. During signal transmission, it can act as a shield between the USB 2.0 low-speed terminal and the USB 3.0 high-speed terminal, enabling the USB 3.0 high-frequency terminal to meet the high-frequency transmission requirements of USB 3.1.

[0035] The middle part of the connecting part 3 and the middle part of the differential signal terminal group 11 are arranged on the same plane and aligned (e.g.) Figure 4 As shown in the diagram, this avoids signal transmission path distortion or interference superposition caused by structural misalignment, reducing the risk of attenuation or distortion of high-frequency signals during transmission due to unreasonable spatial structure. Alignment facilitates stamping during manufacturing, reducing complex operations and precision errors in the stamping process, improving production efficiency and product qualification rate, and lowering manufacturing costs.

[0036] Furthermore, the parallel wiring structure of the USB 3.0 high-speed differential terminal block and the USB 2.0 VBUS terminal block in existing technologies results in a long wiring distance, making it susceptible to external interference during high-frequency transmission and increasing the risk of far-end crosstalk. This wiring method cannot meet the growing high-frequency transmission requirements of USB 3.1, limiting the data processing capabilities and transmission efficiency of devices, and failing to meet the urgent needs of modern electronic devices for high-speed and stable data transmission.

[0037] In this embodiment, combined with Figure 1 and Figure 2 The connecting part 3 includes a bending section 31 and an extension section 32. The bending section 31 bends from the USB 3.0 ground terminal 12 away from the signal terminal group 22, which can avoid unnecessary contact or electromagnetic coupling between the connecting part 3 and the signal terminal group 22, reduce interference to the signal transmission of the signal terminal group 22, and ensure the stability of low frequency signal transmission.

[0038] Extension section 32 is located below USB 2.0 ground terminal 23 (e.g.) Figure 3 As shown, this design not only extends the effective length of the grounding path and enhances the shielding coverage of the electromagnetic environment surrounding the USB 2.0 terminal block 2, but also avoids layout conflicts with other terminals on the same plane through the spatial layout of the upper and lower layers.

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0040] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and 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 a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A terminal structure of a USB connector, characterized by comprising: include: USB 3.0 terminal block (1), including a two differential signal terminal block (11) and a USB 3.0 ground terminal (12); as well as The USB 2.0 terminal block (2) includes a power terminal (21), a signal terminal block (22) and a USB 2.0 ground terminal (23), wherein the USB 3.0 ground terminal (12) is connected to the USB 2.0 ground terminal (23).

2. The terminal structure of a USB connector according to claim 1, wherein The USB 2.0 terminal group (2) and the USB 3.0 ground terminal (12) are both located between the two differential signal terminal groups (11).

3. The terminal structure of the USB connector according to claim 2, characterized by The USB 3.0 ground terminal (12) and the USB 2.0 ground terminal (23) are connected by a connecting part (3), which extends from the USB 3.0 ground terminal (12) to the area between the signal terminal group (22) and the USB 2.0 ground terminal (23).

4. The terminal structure of the USB connector according to claim 3, characterized by The middle part of the connecting part (3) and the middle part of the differential signal terminal group (11) are arranged on the same plane and aligned.

5. The terminal structure of the USB connector according to claim 4, wherein The connecting part (3) includes a bending section (31) and an extension section (32). The bending section (31) bends from the USB 3.0 ground terminal (12) away from the signal terminal group (22), and the extension section (32) is located below the USB 2.0 ground terminal (23).

6. The terminal structure of a USB connector according to claim 1, wherein The differential signal terminal group (11) includes two differential signal terminals, each of which includes a first contact portion (111), a first fixing portion (112), and a first soldering portion (113) connected in sequence. The signal terminal group (22) includes two signal terminals, each of which includes a second contact portion (221), a second fixing portion (222), and a second soldering portion (223) connected in sequence. The first welded part (113) and the second welded part (223) are arranged aligned on the same plane.

7. The terminal structure of the USB connector according to claim 6, wherein The first fixed part (112) includes a first bent section (112a) and a first extension section (112b). The first contact part (111), the first bent section (112a), the first extension section (112b) and the first welded part (113) are connected in sequence. The first bent section (112a) bends from the first contact part (111) in a direction away from the second contact part (221), so that the first extension section (112b) is located below the second fixed part (222).

8. The terminal structure of a USB connector according to claim 6, wherein The first contact portion (111) is located below the second contact portion (221).

9. The terminal structure of a USB connector according to claim 1, wherein The USB 3.0 terminal block (1) and the USB 2.0 terminal block (2) are integrally stamped.

10. A connector characterized by comprising: The terminal structure includes that of the USB connector as described in any one of claims 1 to 9.

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