USB connector with enhanced anti-interference performance

Abstract

The utility model discloses an enhanced anti-interference USB connector, comprising a first terminal assembly (1), a second terminal assembly (2) and a metal housing (3) sleeved outside the first terminal assembly (1) and the second terminal assembly (2), the first terminal assembly (1) is at least provided with a first grounding terminal (1A) and a second grounding terminal (1B), one end of the first grounding terminal (1A) is located in an inner cavity of the metal shell (3), and the other end of the first grounding terminal (1A) extends out of the metal shell (3); one end, located in the inner cavity of the metal shell (3), of the first grounding terminal (1A) is provided with a first elastic bending part (1A1) and a second elastic bending part (1A2), the first elastic bending part (1A1) is located in the inner cavity of the metal shell (3) and used for making contact with an insertion terminal, and the second elastic bending part (1A2) keeps making elastic contact with the interior of the metal shell (3); the second ground terminal (1B) has the same structure as the first ground terminal (1A).

Description

Technical fields:

[0001] This utility model relates to the field of connector technology, and specifically to a USB connector with enhanced anti-interference capabilities. Background technology:

[0002] Traditional USB female connectors typically include two sets of terminals: one dedicated to signal transmission and the other for current conduction and device grounding. When the female connector mates with the male connector, signals are exchanged through the transmission terminals, while current is connected through the conduction terminals. While this design achieves its functionality, it also presents some technical challenges, particularly regarding impedance matching in grounding.

[0003] Specifically, the grounding terminal in the female connector is connected to the system ground via the circuit board's ground wire. However, impedance mismatches may exist in the grounding path, leading to radio frequency interference (RFI) during signal transmission. This interference not only affects the communication stability of the USB interface itself but also adversely impacts surrounding wireless devices such as mice, headphones, and keyboards. These devices may malfunction, degrade the user experience, or even cause system errors.

[0004] Furthermore, with the widespread adoption of wireless devices and the diversification of usage scenarios, the problem of radio frequency (RF) interference is becoming increasingly prominent. In high-density wireless environments, RF interference issues not properly addressed in USB connector design can be further amplified, affecting the overall system performance. Therefore, how to optimize the design of traditional USB female connectors to reduce RF interference while maintaining the functional integrity of the connectors is a pressing technical problem that needs to be solved in the current connector technology field.

[0005] In view of the above, the inventors propose the following technical solution. Utility model content:

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a USB connector with enhanced anti-interference capabilities.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a USB connector with enhanced anti-interference, comprising: a first terminal assembly and a second terminal assembly, and a metal shell sleeved on the outside of the first terminal assembly and the second terminal assembly, wherein the first terminal assembly is provided with at least a first ground terminal and a second ground terminal, wherein one end of the first ground terminal is located in the inner cavity of the metal shell, and the other end of the first ground terminal extends out of the metal shell; the end of the first ground terminal located in the inner cavity of the metal shell is provided with a first elastic bending portion and a second elastic bending portion, wherein the first elastic bending portion is located in the inner cavity of the metal shell for contacting the insertion terminal, and the second elastic bending portion maintains elastic contact with the inside of the metal shell; the second ground terminal has the same structure as the first ground terminal.

[0008] Furthermore, in the above technical solution, the first grounding terminal and the second grounding terminal are symmetrically located on both sides of the first terminal assembly, and one end of the first grounding terminal and the second grounding terminal are provided with an elastic part for contacting the insertion terminal.

[0009] Furthermore, in the above technical solution, the metal shell is also bent on both sides and provided with a third elastic contact portion and a fourth elastic contact portion extending into the inner cavity and located on both sides of the second terminal assembly.

[0010] Furthermore, in the above technical solution, the second terminal assembly includes a second insulating base encapsulated in a metal housing and at least four second connecting terminals disposed in the second insulating base. One end of each second connecting terminal is located on the tongue plate of the second insulating base and elastically protrudes from the tongue plate. At least one second connecting terminal is a grounding terminal, and the remaining second connecting terminals are data signal terminals.

[0011] Furthermore, in the above technical solution, the first terminal assembly includes a first insulating base mounted on a second insulating base and a plurality of first connecting terminals disposed within the first insulating base, wherein the first grounding terminal and the second grounding terminal are disposed within the first insulating base and located on both sides of the first connecting terminal.

[0012] Furthermore, in the above technical solution, the first insulating seat includes an upper positioning plate located above the second insulating seat and a rear positioning plate located at the rear end of the second insulating seat. The upper positioning plate has a tongue plate first formed in the middle, located above the tongue plate second. The upper positioning plate has a first extension arm and a second extension arm formed on both sides of the tongue plate first for fixing the first grounding terminal and the second grounding terminal.

[0013] Furthermore, in the above technical solution, the second insulating base is provided with a first positioning pin hole and a second positioning pin hole for matching and positioning with the first extension arm and the second extension arm, respectively. The rear positioning plate is fastened to the rear end face of the second insulating base. The two side walls of the second insulating base are provided with a first positioning groove and a second positioning groove for locking and fixing the rear positioning plate. The two sides of the rear positioning plate are provided with a first pin part and a second pin part that can be inserted into the first positioning groove and the second positioning groove.

[0014] Furthermore, in the above technical solution, the rear end of the metal shell is also provided with a rear cover that covers the rear end of the first terminal assembly. The metal shell has multiple first elastic rocker plates on both sides for fastening with the rear cover, and the bending plates on both sides of the rear cover have first locking holes for matching and fastening with the first elastic rocker plates.

[0015] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: In the present invention, a first grounding terminal and a second grounding terminal are provided on both sides of the first terminal assembly. The first elastic bending part and the second elastic bending part on the first grounding terminal and the second grounding terminal keep the metal shell always grounded and can make contact and conduction after the male socket shell is inserted. This makes the male socket shell and the metal shell, the first grounding terminal, the second grounding terminal and the GND of the circuit board all conduct to each other during communication connection. This improves the impedance matching degree by strengthening the GND of the circuit board, thereby reducing RFI. Attached image description:

[0016] Figure 1 This is a breakdown of the utility model. Figure 1 ;

[0017] Figure 2 This is a breakdown of the utility model. Figure 2 ;

[0018] Figure 3 This is a perspective view of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of this utility model;

[0020] Figure 5 This is an exploded view of the first terminal assembly in this utility model. Detailed implementation method:

[0021] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0022] The USB connector of this utility model is a USB 3.0.B female connector, which is generally used for printer data signal transmission.

[0023] See Figures 1 to 5As shown, a USB connector with enhanced anti-interference capability includes a first terminal assembly 1, a second terminal assembly 2, and a metal housing 3 sleeved on the outside of the first terminal assembly 1 and the second terminal assembly 2. The first terminal assembly 1 is provided with at least a first ground terminal 1A and a second ground terminal 1B. One end of the first ground terminal 1A is located in the inner cavity of the metal housing 3, and the other end of the first ground terminal 1A extends out of the metal housing 3. The end of the first ground terminal 1A located in the inner cavity of the metal housing 3 is provided with a first elastic bending portion 1A1 and a second elastic bending portion 1A2. The first elastic bending portion 1A1 is located in the inner cavity of the metal housing 3 for contacting the insertion terminal, and the second elastic bending portion 1A2 maintains elastic contact with the inside of the metal housing 3. The second ground terminal 1B has the same structure as the first ground terminal 1A.

[0024] By setting a first grounding terminal 1A and a second grounding terminal 1B on both sides of the first terminal assembly 1, the metal housing 3 is kept grounded by the first elastic bending portion 1A1 and the second elastic bending portion 1A2 on the first grounding terminal 1A and the second grounding terminal 1B, and can make contact and conduction after the male housing is inserted. This makes the male housing, the metal housing 3, the first grounding terminal 1A, the second grounding terminal 1B and the GND of the circuit board all conduct to each other during communication connection, thereby improving the impedance matching degree by strengthening the GND of the circuit board, and thus reducing RFI.

[0025] The first grounding terminal 1A and the second grounding terminal 1B are symmetrically located on both sides of the first terminal assembly 1, and one end of each of the first grounding terminal 1A and the second grounding terminal 1B is provided with an elastic portion for contacting the insertion terminal. The metal housing 3 is also bent on both sides and provided with a third elastic contact portion 31 and a fourth elastic contact portion 32 extending into the inner cavity and located on both sides of the second terminal assembly 2. By providing the third elastic contact portion 31 and the fourth elastic contact portion 32 on both sides of the inner cavity of the metal housing 3, when the male connector housing is inserted into the female connector's metal housing 3, the first elastic bending portion 1A1, the second elastic bending portion 1A2, the third elastic contact portion 31, and the fourth elastic contact portion 32 can all achieve mutual conduction between the male connector housing and the GND of the circuit board, thereby effectively reducing RFI generated during the use of the USB female connector.

[0026] The second terminal assembly 2 includes a second insulating base 21 encapsulated in a metal housing 3 and at least four second connecting terminals 22 disposed in the second insulating base 21. One end of the second connecting terminal 22 is located on the tongue plate of the second insulating base 21 and elastically protrudes from the tongue plate. At least one second connecting terminal 22 is a grounding terminal, and the remaining second connecting terminals 22 are data signal terminals.

[0027] The first terminal assembly 1 includes a first insulating base 11 mounted on a second insulating base 21 and a plurality of first connecting terminals 12 disposed within the first insulating base 11. A first grounding terminal 1A and a second grounding terminal 1B are disposed within the first insulating base 11 and located on either side of the first connecting terminals 12. The first insulating base 11 includes an upper positioning plate 111 located above the second insulating base 21 and a rear positioning plate 112 located at the rear end of the second insulating base 21. A tongue plate 1 is formed in the middle of the upper positioning plate 111, located above the second tongue plate. A first extension arm 113 and a second extension arm 114 are formed on both sides of the tongue plate 1 for fixing the first grounding terminal 1A and the second grounding terminal 1B. The second insulating base 21 is provided with a first positioning pin hole 211 and a second positioning pin hole 212 for matching and positioning with the first extension arm 113 and the second extension arm 114, respectively. The rear positioning plate 112 is fastened to the rear end face of the second insulating base 21. The two side walls of the second insulating base 21 are provided with a first locking groove 213 and a second locking groove 214 for locking and fixing the rear positioning plate 112. The two sides of the rear positioning plate 112 are provided with a first pin portion 115 and a second pin portion 116 that can be inserted into the first locking groove 213 and the second locking groove 214.

[0028] The rear end of the metal housing 3 is also provided with a rear cover 4 that covers the rear end of the first terminal assembly 1. The metal housing 3 has multiple first elastic rocker plates 33 on both sides for fastening with the rear cover 4, and the bending plates on both sides of the rear cover 4 are provided with first locking holes 41 for matching and fastening with the first elastic rocker plates 33.

[0029] In summary, in this utility model, five first connecting terminals 12 are arranged in an aligned manner, and the first connecting terminal 12 located in the middle can be set as a grounding terminal. The first grounding terminal 1A and the second grounding terminal 1B are respectively located on both sides of the five first connecting terminals 12. The first insulating seat 11 is molded and wrapped around the first connecting terminal 12, the first grounding terminal 1A and the second grounding terminal 1B to form the first terminal assembly 1. The four second connecting terminals 22 of the second terminal assembly 2 are first snapped onto the second insulating seat 21. The second insulating seat 21 and the second connecting terminals 22 are then sequentially inserted into the metal shell 3. The first terminal assembly 1 is then installed onto the second insulating seat 21. Sealant is then injected between the second insulating seat 21 and the first terminal assembly 1 to fix the second connecting terminals 22, the second insulating seat 21 and the first terminal assembly 1 into a whole. Finally, the rear cover 4 is installed onto the rear end of the metal shell 3, which is formed by sheet metal stamping and bending. Therefore, compared with the traditional female connector which only has one grounding terminal, this application reduces the RFI generated when using the USB female connector by adding a first grounding terminal 1A and a second grounding terminal 1B.

[0030] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A USB connector with enhanced anti-interference capability, comprising a first terminal assembly (1) and a second terminal assembly (2) and a metal housing (3) sleeved on the outside of the first terminal assembly (1) and the second terminal assembly (2), characterized in that: The first terminal assembly (1) is provided with at least a first grounding terminal (1A) and a second grounding terminal (1B), wherein one end of the first grounding terminal (1A) is located in the inner cavity of the metal shell (3), and the other end of the first grounding terminal (1A) extends out of the metal shell (3); The first grounding terminal (1A) is provided with a first elastic bending part (1A1) and a second elastic bending part (1A2) at one end of the inner cavity of the metal shell (3). The first elastic bending part (1A1) is located in the inner cavity of the metal shell (3) for contacting the insertion terminal, and the second elastic bending part (1A2) is kept in elastic contact with the inside of the metal shell (3). The second grounding terminal (1B) has the same structure as the first grounding terminal (1A).

2. The USB connector with enhanced anti-interference capability according to claim 1, characterized in that: The first grounding terminal (1A) and the second grounding terminal (1B) are symmetrically located on both sides of the first terminal assembly (1), and one end of the first grounding terminal (1A) and the second grounding terminal (1B) is provided with an elastic part for contacting the insertion terminal.

3. The USB connector with enhanced anti-interference capability according to claim 1, characterized in that: The metal casing (3) is also provided with a third elastic contact portion (31) and a fourth elastic contact portion (32) that extend into the inner cavity and are located on both sides of the second terminal assembly (2).

4. The USB connector with enhanced anti-interference capability according to claim 1, characterized in that: The second terminal assembly (2) includes a second insulating base (21) encapsulated in a metal housing (3) and at least four second connecting terminals (22) disposed in the second insulating base (21). One end of the second connecting terminal (22) is located on the tongue plate of the second insulating base (21) and elastically protrudes from the tongue plate. At least one second connecting terminal (22) is a grounding terminal, and the remaining second connecting terminals (22) are data signal terminals.

5. The USB connector with enhanced anti-interference capability according to claim 4, characterized in that: The first terminal assembly (1) includes a first insulating base (11) mounted on a second insulating base (21) and a plurality of first connecting terminals (12) disposed within the first insulating base (11), wherein the first grounding terminal (1A) and the second grounding terminal (1B) are disposed within the first insulating base (11) and located on both sides of the first connecting terminal (12).

6. The USB connector with enhanced anti-interference capability according to claim 5, characterized in that: The first insulating base (11) includes an upper positioning plate (111) located above the second insulating base (21) and a rear positioning plate (112) located at the rear end of the second insulating base (21). The upper positioning plate (111) has a tongue plate (1) located above the tongue plate (2) in the middle. The upper positioning plate (111) has a first extension arm (113) and a second extension arm (114) located on both sides of the tongue plate (1) for fixing the first grounding terminal (1A) and the second grounding terminal (1B).

7. The USB connector with enhanced anti-interference capability according to claim 6, characterized in that: The second insulating base (21) is provided with a first positioning pin hole (211) and a second positioning pin hole (212) for matching and positioning with the first extension arm (113) and the second extension arm (114), respectively. The rear positioning plate (112) is fastened to the rear end face of the second insulating base (21). The two side walls of the second insulating base (21) are provided with a first locking groove (213) and a second locking groove (214) for locking and fixing the rear positioning plate (112). The two sides of the rear positioning plate (112) are provided with a first pin part (115) and a second pin part (116) that can be inserted into the first locking groove (213) and the second locking groove (214).

8. A USB connector with enhanced anti-interference capability according to any one of claims 1-7, characterized in that: The rear end of the metal shell (3) is also provided with a rear cover (4) that covers the rear end of the first terminal assembly (1). The metal shell (3) has multiple first elastic rocker plates (33) on both sides for fastening with the rear cover (4), and the bending plates on both sides of the rear cover (4) are provided with first locking holes (41) for matching and fastening with the first elastic rocker plates (33).

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