WO2012116505A1

WO2012116505A1 - Socket electrical connector

Info

Publication number: WO2012116505A1
Application number: PCT/CN2011/071990
Authority: WO
Inventors: 林万辉; 周亚; 彭雪; 胡光才
Original assignee: 东莞宇球电子有限公司
Priority date: 2011-02-28
Filing date: 2011-03-21
Publication date: 2012-09-07
Also published as: CN102185205A

Abstract

A socket electrical connector is provided, which includes an insulating body, a printed circuit board, a plurality of USB2.0 terminals and additional terminals, and a metal shell. The tongue plate of the insulating body has a slot. A plurality of connecting fingers, first welding portions and second welding portions are located on the printed circuit board. The connecting fingers are connected with the first welding portions by wiring. The printed circuit board is fixed in the slot. The additional terminals are welded with the first welding portions, and the USB2.0 terminals are welded with the second welding portions. Thus the additional terminals, the USB2.0 terminals and the printed circuit board are combined to be a module group, which is fixed in the tongue plate. Signal transmission rate could be increased by combinedly using the connecting fingers and the USB2.0 terminals, and short circuit between the terminals could be avoided by using the printed circuit board.

Description

Socket electrical connector

技术领域Technical field

The present invention relates to the field of electrical connectors, and more particularly to a socket electrical connector that is easy to assemble and has good product quality after assembly.

背景技术Background technique

Universal Serial Bus (USB) is a hot-swappable transmission interface widely used in PC peripheral products. The interface is connected to the hardware for data transmission without rebooting. It has good transmission performance. In 1988, the first generation of USB 1.1 transmission interface was pushed. In 2000, Intel released the official specification of USB2.0, which also expanded the types of computer peripheral products that can use the USB transmission interface, such as mobile hard disk and printer. , mouse, etc.

However, as the capacity of the files to be transmitted is increasing, the transmission speed of USB2.0 is limited by the control chip and various factors, and the demand for the next generation of USB3.0 is promoted. In addition to maintaining the previous structure and plug-and-play features, USB 3.0 extends the application area to synchronous instant transmission of personal computers, consumer electronics and mobile devices, and its transmission speed is 10 times faster than USB 2.0. And has the advantage of low power consumption.

Although the current USB3.0 electrical connector has the basic structure of the existing USB2.0 electrical connector, the structure is further complicated by the use of adding a set of terminals to increase the transmission speed. The existing USB3.0 electrical connector mainly comprises two sets of terminals, an insulating body and a metal outer casing. The two sets of terminals are formed by stamping, and the two sets of terminals are directly inserted or inserted. The mounting method is fixed on the insulating body, and the insulating body is covered by the metal casing. However, the manner in which the two sets of terminals are directly fixed to the insulating body by molding does not ensure the assembly quality of the product, and it is easy to cause a short circuit between the terminals, resulting in defective products, which are brought to the enterprise and the user. Inconvenient; and the manner in which the terminals are directly fixed to the insulating body by inserting and inserting makes the assembly inconvenient, the product assembly efficiency is low, and the product assembly quality is also not guaranteed. In addition, due to the increase in the number of terminals assembled on the insulative housing of the existing USB3.0 electrical connector, the existing USB3.0 electrical connector has insufficient strength of the insulating body and is easily damaged by external force, which brings inconvenience to the user.

发明内容Summary of the invention

In view of the above, the present invention is directed to the lack of the prior art, and the main purpose thereof is to provide a socket electrical connector, which can effectively solve the problem that the existing USB3.0 electrical connector is inconvenient to assemble and cannot guarantee product quality after assembly. .

Another object of the present invention is to provide a socket electrical connector that can effectively solve the problem that the strength of the insulating body of the existing USB 3.0 electrical connector is insufficient to be damaged by an external force.

In order to achieve the above object, the present invention adopts the following technical solutions:

A socket electrical connector includes an insulative housing, a printed circuit board, additional terminals, a USB 2.0 terminal, and a metal housing; wherein:

The insulative housing includes a base plate having a base and a front end of the base, and a rear end of the base is provided with a slot extending forward to the front end of the tongue plate;

The front end of the printed circuit board is laterally arranged with a plurality of gold fingers, the plurality of gold fingers exposing the same surface of the tongue plate, and the rear end of the printed circuit board is provided with a plurality of first welding positions and a second welding position, the plural The first soldering bits are respectively connected to the gold fingers by wires on the printed circuit board, and the printed circuit boards are inserted into the slots after the soldering terminals form a module;

The connecting end of the additional terminal is soldered and fixedly connected to the corresponding first welding position, and the welded end of the additional terminal protrudes out of the base;

The fixing portion of the USB2.0 terminal is soldered and fixed to the corresponding second welding position, and the elastic contact portion of the USB2.0 and the gold finger respectively expose the same surface of the tongue plate, and the elastic contact portion is located behind the gold finger. The USB2.0 soldering portion also protrudes out of the base;

The metal casing covers the outside of the insulation body.

As a preferred solution, the additional terminal includes two pairs of differential signal terminals and one ground terminal, and the USB 2.0 terminals are four.

As a preferred solution, the tongue plate is provided with a first through slot, and the printed circuit board is provided with a second through slot, and the second through slot is connected with the corresponding first through slot after assembly, so as to be USB2.0 The resilient contact of the terminal provides a space for deformation.

As a preferred solution, the fixing portion of the USB2.0 terminal is bent and extended with a positioning post, and the positioning post is inserted and positioned in the second welding position.

As a preferred solution, the base is divided into two parts, an upper and a lower base, and the tongue is disposed at the front end of the upper base.

As a preferred solution, the upper surface of the lower base is provided with a fixing hole, and the lower surface of the upper base extends downwardly to provide a fixing post, and the fixing post is tightly inserted into the fixing hole.

As a preferred solution, the connector further includes a fixing base fixed to the rear end of the base, and the soldering end corresponding to the additional terminal and the soldering portion of the USB 2.0 are disposed on the fixing seat The hole, the solder end of the additional terminal and the soldered portion of the USB 2.0 pass through the corresponding through hole for positioning.

As a preferred solution, the metal casing comprises a main body and a back cover, the main body includes a top plate, a bottom plate and a side plate connecting the top plate and the bottom plate, and the top plate, the bottom plate and the side plate are enclosed to form a hollow cavity. The rear cover extends rearwardly toward the rear end of the top plate and covers the rear end opening of the cavity.

As a preferred solution, the second welding position is located at the front end of the first welding position.

As a preferred solution, the soldering end of the additional terminal and the soldering portion of the USB 2.0 terminal are arranged in at least two rows.

The present invention has obvious advantages and advantageous effects compared with the prior art. Specifically, it can be known from the above technical solutions:

1. Forming a module by soldering and fixing each additional terminal to the first soldering position on the printed circuit board, and soldering and fixing each USB2.0 terminal to the second soldering position on the printed circuit board. It is fixed in the tongue of the insulating body, and cooperates with each gold finger and each USB2.0 terminal for signal transmission to improve the signal transmission rate. The structure is simple, and the modular assembly is formed, which facilitates assembly and is beneficial to improve product assembly efficiency. Moreover, the use of the printed circuit board during assembly can effectively avoid short-circuit phenomenon between the terminals, ensure the quality of the assembled product, and improve the product qualification rate, thereby achieving high efficiency and high quality of product assembly.

Second, the printed circuit board is inserted in the tongue plate, and the printed circuit board is used to effectively strengthen the strength of the tongue of the insulating body, thereby avoiding the product being easily damaged by external force, making the product more durable and bringing more convenience to the user. Sex.

3. The upper base is fixed to the lower base by the use of the fixing hole and the fixing column, and the upper base is fixed on the lower base to form a detachable structure, and the structure is simple, and the printed circuit board, each USB2.0 terminal and each additional terminal are convenient. It is assembled on the tongue plate to improve the assembly efficiency of the product.

4. A first through slot is disposed on the tongue plate, and a second through slot is disposed corresponding to the printed circuit board, and the first through slot and the second through slot are used together, and the corresponding USB2.0 terminal is used on the one hand. Provide sufficient deformation space to make the external plug plug and unplug smoothly, signal transmission is more stable and reliable, on the other hand, it can save raw materials and reduce manufacturing cost.

In order to explain the structural features and functions of the present invention more clearly, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

附图说明DRAWINGS

Figure 1 is an assembled perspective view of a first preferred embodiment of the present invention;

Figure 2 is an exploded view of the first preferred embodiment of the present invention;

Figure 3 is a partial assembled view of the first preferred embodiment of the present invention;

Figure 4 is a cross-sectional view showing a first preferred embodiment of the present invention;

Figure 5 is another cross-sectional view of the first preferred embodiment of the present invention;

Figure 6 is an assembled perspective view of a second preferred embodiment of the present invention;

Figure 7 is an exploded view of a second preferred embodiment of the present invention;

Figure 8 is another perspective view of Figure 7;

Figure 9 is a partial assembled view of a second preferred embodiment of the present invention;

Figure 10 is another perspective view of Figure 9;

Figure 11 is a cross-sectional view showing a second preferred embodiment of the present invention;

Figure 12 is another cross-sectional view of a second preferred embodiment of the present invention.

Description of the figure:

10. Insulating body 11 and base

101, upper base 102, lower base

111, fixing hole 112, positioning block

113, terminal channel 12, tongue plate

121, fixing column 122, positioning groove

123, slot 124, first through slot

20, printed circuit board 21, gold finger

22, the first welding position 23, wiring

24, the second welding position 25, the second through groove

30, additional terminal 31, connection end

32, soldering end 40, USB2.0 terminal

41. Elastic contact portion 42 and fixing portion

421, positioning post 43, welding part

50, fixing seat 51, through hole

60, metal shell 61, the main body

62, the back cover 63, fixed feet

601, cavity

具体实施方式detailed description

Please refer to FIG. 1 to FIG. 5, which shows a specific structure of a first preferred embodiment of the present invention, including an insulative housing 10, a printed circuit board 20, five additional terminals 30, and four USB 2.0. The terminal 40, a fixing base 50 and a metal outer casing 60.

The structural characteristics of each component of the socket connector will be described in detail below, and the assembly method of each component will be described. And if there is a description of the direction (up, down, left, right, front and back), the socket connector structure shown in FIG. 2 is taken as a reference, and the direction indicated by the double arrow in the figure is the front side, but The actual direction of use of the receptacle connector is not limited to this.

The insulative housing 10 includes a base 11 and a tongue 12 at the front end of the base 11. The base 11 has a square shape, and the tongue 12 extends forwardly from a lower portion of the front surface of the base 11, in this embodiment. The insulative housing 10 is an integrally formed structure, and the terminal channel 113 for the head of the USB 2.0 terminal 40 is disposed side by side correspondingly to the USB 2.0 terminal 40. The terminal channel 113 is provided in this embodiment. However, the number of the terminal channels 113 is limited to four, and may also be a large channel, which is not limited. The rear end of the base 11 is provided with a slot 123 extending forwardly to the front end of the tongue plate 12 for receiving the printed circuit board 20. In addition, the upper corresponding USB2.0 terminal 40 of the tongue plate 12 is laterally arranged with a first through slot 124. In this embodiment, there are four first through slots 124, and each of the first through slots 124 extends longitudinally. The corresponding USB 2.0 terminal 40 provides a deformation space.

The front end of the lower surface of the printed circuit board 20 is laterally arranged side by side with five gold fingers 21, and five first welding positions 22 are laterally arranged side by side corresponding to the rear end of the printed circuit board 20, and the first welding position 22 has a through hole shape. Soldering for the purpose of plugging, of course, can also be soldered in a flat manner, and the five first soldering sites 22 are electrically connected to the corresponding gold fingers 21 via the wires 23 on the printed circuit board 20, respectively. And, the rear end of the printed circuit board 20 is laterally arranged side by side with four second soldering places 24, the second soldering station 24 also has a through hole shape, and the second soldering station 24 is located at the front end of the first soldering station 22. . The printed circuit board 20 is inserted and fixed in the slot 123, and the five gold fingers 21 expose the lower surface of the tongue 12 for contact with an external plug. In addition, four second through slots 25 are laterally arranged on the surface of the printed circuit board 20 corresponding to the first through slots 124. Each of the second through slots 25 extends longitudinally. The second through slot 25 is first and the first through slot 25 The slots 124 cooperate with each other to provide a deformation space for the USB 2.0 terminal 40.

Of course, the number of the first through slots 124 and the second through slots 124 may also be one, not limited to four.

The five additional terminals 30 include two pairs of differential signal terminals and a ground terminal, and the two pairs of differential signal terminals are used for transmitting the USB 3.0 signal to improve signal transmission efficiency. Each of the additional terminals 30 has a connecting end 31 and a soldering end 32. The connecting end 31 has a hook shape. The connecting end 31 hooks the corresponding welding position 22 from above to the bottom and is welded to the corresponding welding position 22. Electrical connection. The solder end 32 extends downwardly out of the base 11 for soldering electrical connection to an external circuit board.

The USB 2.0 terminals 40 are four, and each of the USB 2.0 terminals 40 includes an elastic contact portion 41, a fixing portion 42, and a welded portion 43 which are integrally connected. The elastic contact portion 41 passes through the corresponding terminal passage 113 and is exposed to the outside of the corresponding first through groove 124. The elastic contact portion 41 and the gold finger 21 expose the lower surface of the tongue plate 12, and the elastic contact The portion 41 is located at the rear end of the gold finger 21, and the elastic contact portion 41 is for contacting the external plug. The fixing portion 42 is located in the corresponding terminal passage 113, and the fixing portion 42 is bent upward to have two positioning posts 421. The two positioning posts 421 are inserted into the through holes of the corresponding second welding positions 24 and are fixedly welded to the corresponding second welding positions 24; the welding portions 43 extend downwardly outside the base 11 for The external board is soldered to the electrical connection.

The fixing base 50 is inserted from the bottom up and fixed to the rear end of the base 11, and the fixing base 50 abuts against the rear end surface of the printed circuit board 20 to prevent the printed circuit board 20 from being loosened backward. The fixing base 50 The soldering portion 32 corresponding to the aforementioned additional terminal 30 and the soldering portion 43 of the USB 2.0 terminal 40 are provided with a plurality of through holes 51, and the soldering end 32 of the additional terminal 30 and the soldering portion 43 of the USB 2.0 terminal 40 pass downward. Corresponding through hole 51 for better fixing the soldering end 32 of the additional terminal 30 and the soldering portion 43 of the USB 2.0 terminal 40, the soldering end 32 of the additional terminal 30 and the USB 2.0 terminal 40 The soldering portions 43 are arranged in at least two rows extending beyond the fixing base 50 to solder the soldering end 32 of the additional terminal 30 and the soldering portion 43 of the USB 2.0 terminal 40 to the external circuit board.

The fixing base 50 is provided for the connector of the above horizontal structure, and in the vertical connector product, since the welding end of all the terminals can be further fixed without bending, the fixing seat 50 can be omitted. A bent cleat is bent over the iron shell to replace the fixing base 50 to be fixed to the printed circuit board, and then the connector is vertically inserted into the external circuit board. This structure is also applicable to the second embodiment.

The metal casing 60 covers the insulative housing 10 for preventing electromagnetic interference, and the metal casing 60 includes a main body 61 and a rear cover 62. The main body 61 is composed of a top plate, a bottom plate and two side plates connecting the top plate and the bottom plate. The top plate, the bottom plate and the two side plates are enclosed to form a hollow cavity 601. The rear cover 62 is folded downward at the rear end surface of the top plate. Bending and sealing the rear end opening of the cavity 601, the soldering end 32 of each of the additional terminals 30 and the soldering portion 43 of the USB 2.0 terminal 40 are both extended from the metal casing 60; and the two sides of the metal casing 60 A fixing leg 63 for soldering and fixing the metal casing 60 to the external circuit board is respectively extended.

The assembly process of this embodiment is detailed as follows:

As shown in FIG. 2 and FIG. 3, first, the connection end 31 of each additional terminal 30 and the fixing portion 42 of each USB 2.0 terminal 40 are correspondingly inserted into each of the first welding positions 22 and the second welding positions 24, and then, The connection end 31 of each additional terminal 30 is soldered and fixed to the corresponding first soldering position 22, and the fixing portion 42 of each USB2.0 terminal 40 is soldered and fixed to the second soldering station 24, thereby making the printed circuit board 20 Each additional terminal 30 and each USB 2.0 terminal 40 are combined to form a module (as shown in FIG. 3).

Next, the front end of the module is inserted from the rear end opening of the slot 123 of the tongue plate 12, thereby fixing the printed circuit board 20 in the tongue plate 12 while making the elastic contact portion 41 of each USB 2.0 terminal 40 and The gold fingers 21 on the printed circuit board 20 are exposed downwardly to the lower surface of the tongue 12.

Then, the fixing base 50 is inserted and fixed from the bottom to the rear end of the base 11, and the fixing base 50 is used to abut the printed circuit board 20 to prevent the printed circuit board 20 from being loosened backward, and at the same time, the aforementioned USB2.0 terminals are made. The welded portion 43 of 40 and the welded end 32 of each additional terminal 30 extend downward through the corresponding through hole 51 of the mount 50.

Finally, the front end of the insulative housing 10 is inserted into the rear end opening of the main body 61 of the metal casing 60, so that the insulative housing 10 is fixed in the cavity 601 of the insulative housing 10, and the rear cover 62 is bent downward to the cavity 601. The rear end opening is covered. As shown in FIG. 1, the metal casing 60 covers the insulative housing 10. The soldering portion 43 of each USB 2.0 terminal 40 and the soldering end 32 of each additional terminal 30 extend out of the metal casing 60.

In use, the socket connector is soldered and fixed to the external circuit board by the fixing legs 63, and the soldering portion 43 of each USB2.0 terminal 40 and the soldering end 32 of each additional terminal 30 are respectively soldered to the external circuit board for electrical connection. Just fine.

Please refer to FIG. 6 to FIG. 12, which shows a specific structure of a second preferred embodiment of the present invention, including an insulative housing 10, a printed circuit board 20, five additional terminals 30, and four USB 2.0. The terminal 40, a fixing base 50 and a metal outer casing 60.

The structural characteristics of each component of the socket connector will be described in detail below, and the assembly method of each component will be described. If there is a description of the direction (up, down, left, right, front and back), the socket connector structure shown in FIG. 8 is taken as a reference, and the direction indicated by the double arrow in the figure is the front side, but The actual direction of use of the receptacle connector is not limited to this.

The insulative housing 10 includes a base 11 and a tongue 12 at the front end of the base 11. The base 11 has a square shape, and the tongue 12 extends forwardly from a lower portion of the front surface of the base 11, in this embodiment. The base 11 is divided into two parts, an upper base 101 and a lower base 102. The tongue 12 is disposed at the front end of the upper base 101. The upper surface of the lower base 102 is provided with a fixing hole 111 corresponding to the base. A fixing post 121 is defined on the lower surface of the lower surface of the bottom surface of the lower base 101, and a positioning block 112 is protruded upwardly from the rear end of the upper surface of the lower base 102. The positioning base 122 is disposed on the upper base 101. The positioning block 112 is disposed on the upper base 101. The upper base 101 is embedded in the positioning base 122 so that the upper base 101 is positioned on the lower base 102 and is fastened to the corresponding fixing hole 111 through the fixing post 121 so that the upper base 101 is fixed to the lower base 102. And the corresponding USB2.0 terminal 40 on the lower base 102 is laterally arranged side by side with a terminal passage 113 for the head of the USB2.0 terminal 40 to pass through. In this embodiment, four terminal passages 113 are provided, but the number of the terminal passages 113 is provided. Limited to four, can also be a large channel, not limited. The rear end of the base 11 is provided with a slot 123 extending forwardly to the front end of the tongue plate 12 for receiving the printed circuit board 20. In addition, the upper corresponding USB2.0 terminal 40 of the tongue plate 12 is laterally arranged with a first through slot 124. In this embodiment, there are four first through slots 124, and each of the first through slots 124 extends longitudinally. The corresponding USB 2.0 terminal 40 provides a deformation space. Of course, the number of the first through slots 124 can also be one, which is not limited.

The fixing base 50 is inserted and fixed to the rear end of the base 11 from the bottom to the top, and the fixing base 50 abuts against the rear end surface of the printed circuit board 20 to prevent the printed circuit board 20 from being loosened backwards. The soldering portion 32 corresponding to the aforementioned additional terminal 30 and the soldering portion 43 of the USB 2.0 terminal 40 are provided with a plurality of through holes 51, and the soldering end 32 of the additional terminal 30 and the soldering portion 43 of the USB 2.0 terminal 40 pass downward correspondingly a through hole 51 for better fixing the soldering end 32 of the additional terminal 30 and the soldering portion 43 of the USB 2.0 terminal 40, the soldering end 32 of the additional terminal 30 and the USB 2.0 terminal 40 The soldering portions 43 are arranged in at least two rows extending beyond the fixing base 50 to weld the soldering end 32 of the additional terminal 30 and the soldering portion 43 of the USB 2.0 terminal 40 to the external circuit board. The fixing base 50 is provided for the horizontal connector, and the fixing seat 50 may not be required for the vertical connector product, and a buckle is bent by the iron shell instead of the fixing base 50 to be fixed to the PCB board.

The assembly process of this embodiment is detailed as follows:

As shown in FIG. 7 and FIG. 8 , first, the connection end 31 of each additional terminal 30 and the fixing portion 42 of each USB 2.0 terminal 40 are correspondingly inserted into the respective first welding positions 22 and the second welding positions 24, and then, The connection end 31 of each additional terminal 30 is soldered and fixed to the corresponding first soldering position 22, and the fixing portion 42 of each USB2.0 terminal 40 is soldered and fixed to the second soldering station 24, thereby making the printed circuit board 20 Each additional terminal 30 and each USB 2.0 terminal 40 are combined to form a module (as shown in FIGS. 9 and 10).

Then, the positioning block 112 and the positioning groove 122 are cooperatively positioned, and the fixing post 121 is mated with the fixing hole 111 so that the tongue plate 12 is fixed on the base 11 (as shown in FIGS. 11 and 12).

Next, the fixing base 50 is inserted and fixed to the rear end of the base 11 from the bottom to the top, and the fixing base 50 is used to abut the printed circuit board 20 to prevent the printed circuit board 20 from being loosened backward, and at the same time, the aforementioned USB 2.0 terminals are made. The welded portion 43 of 40 and the welded end 32 of each additional terminal 30 extend downward through the corresponding through hole 51 of the mount 50.

Finally, the front end of the insulative housing 10 is inserted into the rear end opening of the main body 61 of the metal casing 60, so that the insulative housing 10 is fixed in the cavity 601 of the insulative housing 10, and the rear cover 62 is bent downward to the cavity 601. The rear end opening is covered. As shown in FIG. 6, the metal casing 60 covers the insulative housing 10. The soldering portion 43 of each USB 2.0 terminal 40 and the soldering end 32 of each additional terminal 30 extend out of the metal casing 60.

The design of the present invention focuses on: first, by soldering and fixing the additional terminals to the first soldering pads on the printed circuit board, and soldering and fixing the USB2.0 terminals to the second soldering pads on the printed circuit board. The module is inserted and fixed in the tongue of the insulating body, and is used for signal transmission by using the gold fingers and each USB2.0 terminal to improve the signal transmission rate, the structure is simple, and the modular assembly is formed, which facilitates assembly. It is beneficial to improve product assembly efficiency, and the use of printed circuit boards during assembly can effectively avoid short-circuit phenomenon between terminals, ensure product quality after assembly, improve product qualification rate, thereby achieving high efficiency and high quality of product assembly. Secondly, the printed circuit board is inserted and fixed in the tongue plate, and the strength of the tongue plate of the insulating body is effectively enhanced by the printed circuit board, thereby avoiding the product being easily damaged by external force, making the product more durable and bringing more convenience to the user. Sex. Furthermore, the upper base is fixed to the lower base by fitting the fixing holes and the fixing posts to each other to form a detachable structure, and the structure is simple, and the printed circuit board, each USB2.0 terminal and each additional are convenient. The terminals are assembled on the tongue plate together to improve product assembly efficiency. Finally, a first through slot is disposed on the tongue plate, and a second through slot is disposed corresponding to the printed circuit board, and the first through slot and the second through slot are used together, and the corresponding USB 2.0 terminal can be used. Provide sufficient deformation space to make the external plug plug and unplug smoothly, signal transmission is more stable and reliable, on the other hand, it can save raw materials and reduce manufacturing cost.

The above is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments in accordance with the technical spirit of the present invention are still It is within the scope of the technical solution of the present invention.

Claims

A socket electrical connector comprising: an insulative housing, a printed circuit board, an additional terminal, a USB 2.0 terminal, and a metal housing; wherein:

The metal casing covers the outside of the insulation body.

2. The receptacle electrical connector of claim 1 wherein said additional terminal comprises two pairs of differential signal terminals and a ground terminal, the USB 2.0 terminals being four.

The socket electrical connector according to claim 2, wherein the tongue plate is provided with a first through groove, and the printed circuit board is provided with a second through groove, and the second through groove is assembled and The corresponding first through slots are connected to provide a deformation space for the elastic contact portion of the USB 2.0 terminal.

The socket electrical connector of claim 1 , wherein the fixing portion of the USB 2.0 terminal is bent and extended with a positioning post, and the positioning post is inserted and positioned in the second welding position.

The socket electrical connector according to any one of claims 1 to 4, wherein the base is divided into two parts, an upper and a lower base, and the tongue is disposed at a front end of the upper base.

The socket electrical connector according to claim 5, wherein the upper surface of the lower base is provided with a fixing hole, and the lower surface of the upper base extends downwardly to provide a fixing post, and the fixing column is tightly inserted. In the fixing hole.

The socket electrical connector according to any one of claims 1 to 4, wherein the electrical connector further comprises a fixing base fixed to the rear end of the base, and the fixing seat corresponds to The soldering end of the aforementioned additional terminal and the soldering portion of the USB 2.0 are provided with a plurality of through holes, and the soldering end of the additional terminal and the soldering portion of the USB 2.0 pass through the corresponding through holes for positioning.

8. The receptacle electrical connector of claim 1 wherein said metal housing includes a body and a back cover, said body including a top plate, a bottom plate, and a side panel connecting the top plate and the bottom plate, the top plate The bottom plate and the side plate are enclosed to form a hollow cavity, and the rear cover is bent away from the rear end of the top plate to extend and cover the rear end opening of the cavity.

9. A receptacle electrical connector according to any one of claims 1 to 4 wherein said second weld location is located at the forward end of the first weld station.

The receptacle electrical connector according to any one of claims 1 to 4, characterized in that the soldering end of the additional terminal and the soldering portion of the USB 2.0 terminal are arranged in at least two rows.