Standing-type electrical receptacle connector

A standing-type electrical receptacle connector includes a first terminal module, a second terminal module, and a grounding plate that are received in a metallic shell. The first terminal module includes a first insulated member and first receptacle terminals. The second terminal module includes a second insulated member and second receptacle terminals. The first receptacle terminals include first ground terminals, and tail portions of the first ground terminals are extending out of the first insulated member. The second receptacle terminals include second ground terminals, and tail portions of the second ground terminals are extending out of the second insulated member. The grounding plate includes legs each disposed between the corresponding tail portions, each of the legs and the corresponding tail portions are aligned along a vertical line and inserted into the same ground soldering hole of a circuit board. Therefore, the cost for soldering procedure can be reduced.

CROSS-REFERENCES TO RELATED APPLICATIONS

This non-provisional application claims priority under 35 U.S.C. §119(a) on Patent Application No. 201510477983.2 filed in China, P.R.C. on 2015 Aug. 7, the entire contents of which are hereby incorporated by reference.

FIELD OF THE INVENTION

The instant disclosure relates to an electrical receptacle connector, and more particular to a standing-type electrical receptacle connector.

BACKGROUND

Generally, Universal Serial Bus (USB) is a serial bus standard to the PC architecture with a focus on computer interface, consumer and productivity applications. The existing Universal Serial Bus (USB) interconnects have the attributes of plug-and-play and ease of use by end users. Now, as technology innovation marches forward, micro USB interconnects are developed which include advantageous like small occupation volume and ease of portability. Therefore, the micro USB interconnects are widely adopted to smart mobile devices, digital cameras, or other portable electronic devices to mate with connecting cables for data transmission or power supply.

The appearance, the structure, the contact ways of terminals, the number of terminals, the pitches between terminals (the distances between the terminals), and the pin assignment of terminals of a conventional USB type-C electrical connector are totally different from those of a conventional USB electrical connector. A conventional USB type-C electrical receptacle connector includes a plastic core, upper and lower receptacle terminals held on the plastic core, a grounding plate for shielding is disposed between the upper receptacle terminals and the lower receptacle terminals, and an outer iron shell circularly enclosing the plastic core.

SUMMARY OF THE INVENTION

The upper receptacle terminals include upper tail portions extending out of the plastic core, the lower receptacle terminals include lower tail portions extending out of the plastic core, and the grounding plate includes legs extending out of the plastic core. The upper tail portions, the lower tail portions, and the legs are respectively soldered to different soldering holes of a circuit board. Therefore, the manufacturing of the conventional connector is time consuming. For example, the circuit board has to be processed for several times to form the soldering holes respectively corresponding to the upper tail portion, the lower tail portions, and the legs. In addition, the soldering spots are required to cover the legs, the upper tail portions, and the lower tail portions, so that the legs, the upper tail portions, and the lower tail portions are firmly in contact with the respective soldering holes for conduction. Once any of the soldering holes are not in contact with the legs, the upper tail portions, or the lower tail portions, the transmission of the signal, power, or grounding may be failed.

In view of this, an embodiment of the instant disclosure provides a standing-type electrical receptacle connector. The standing-type electrical receptacle connector comprises a metallic shell, a first terminal module, a second terminal module, and a grounding plate. The metallic shell comprises a receptacle cavity. The first terminal module is received in the receptacle cavity. The first terminal module comprises a first insulated member and a plurality of first receptacle terminals. The first receptacle terminals are held at the first insulated member and at least comprise a plurality of first ground terminals each having a first tail portion. The first tail portions of the first ground terminals are extending out of the first insulated member. The second terminal module is received in the receptacle cavity and combined with the first terminal module. The second terminal module comprises a second insulated member and a plurality of second receptacle terminals The second receptacle terminals are held at the second insulated member and at least comprise a plurality of second ground terminals each having a second tail portion. The second tail portions of the second ground terminals are extending out of the second insulated member. An assembling space is formed between each of the first tail portions and the corresponding second tail portion. The grounding plate is between the first terminal module and the second terminal module. The grounding plate comprises a plate body and a plurality of legs. The plate body is between the first receptacle terminals and the second receptacle terminals. The legs are extending outward from two sides of a rear of the plate body and extending out of the second insulated member. Each of the legs is positioned in the corresponding assembling space. A first leg surface of each of the legs is adjacent to the corresponding first tail portion. A second leg surface of each of the legs is adjacent to the corresponding second tail portion. A cross section portion of each of the legs, a cross section portion of the corresponding first tail portion, and a cross section portion of the corresponding second tail portion are aligned along a vertical line.

In one embodiment, a surface of each of the first tail portions is in contact with the first leg surface of the corresponding leg. In addition, a surface of each of the second tail portions is in contact with the second leg surface of the corresponding leg.

In one embodiment, the surface of each of the first tail portions is spaced from the first leg surface of the corresponding leg by a distance. In addition, the surface of each of the second tail portions is spaced from the second leg surface of the corresponding leg by another distance.

In one embodiment, the standing-type electrical receptacle connector further comprises a circuit board. The circuit board comprises a plurality of ground soldering holes. Each of the ground soldering holes is for the insertion of the corresponding first tail portion, the corresponding second tail portion, and the corresponding leg. The metallic shell comprises an inner shell and a cover plate enclosing the inner shell. The cover plate comprises a plurality of fixing pieces soldered with the circuit board.

In one embodiment, the first terminal module comprises a rear block protruding from a rear of the first insulated member and abutted against a periphery of the metallic shell.

In one embodiment, the second insulated member comprises a tongue portion. Each of the first receptacle terminals comprises a first flat contact portion. Each of the second receptacle terminals comprises a second flat contact portion. The tongue portion has two opposite surfaces. The first flat contact portions and the second flat contact portions are respectively disposed at the two surfaces of the tongue portion.

In one embodiment, the first receptacle terminals further comprise a plurality of first signal terminals and at least one first power terminal. The second receptacle terminals further comprise a plurality of second signal terminals and at least one second power terminal. The tail portions of the first signal terminals, the tail portion of the first power terminal, and the tail portions of the first ground terminals are aligned along a first horizontal line. The tail portions of the second signal terminals, the tail portion of the second power terminal, and the tail portions of the second ground terminals are aligned along a second horizontal line. The vertical line along where the legs, the first tail portions of the first ground terminals, and the second tail portions of the second ground terminals are aligned is substantially perpendicular to the first horizontal line and the second horizontal line.

Based on the above, the tail portion of the ground terminal of the first receptacle terminal, the tail portion of the ground terminal of the second receptacle terminal, and the leg of the grounding plate are adjacent to and drawn close with each other, so that the tail portions and the leg can be inserted into the same ground soldering hole for soldering with the circuit board. Accordingly, the manufacturing of the circuit board can be simplified, and the cost for soldering procedure can be reduced. Moreover, the rear block extending from the rear of the second insulated member can be engaged with the cover plate, so that the cover plate can be positioned with the first insulated member as well as the second insulated member. Additionally, the rear block and the cover plate may be omitted in some embodiments, and the first insulated member and the second insulated member are directly assembled in the inner shell of the metallic shell. Therefore, the manufacturing cost of the connector can be reduced, and the connector can be adapted to different needs.

Furthermore, the first receptacle terminals and the second receptacle terminals are arranged upside down, and the pin-assignment of the flat contact portions of the first receptacle terminals is left-right reversal with respect to that of the flat contact portions of the second receptacle terminals. Accordingly, the standing-type electrical receptacle connector can have a 180 degree symmetrical, dual or double orientation design and pin assignments which enables the standing-type electrical receptacle connector to be mated with a corresponding plug connector in either of two intuitive orientations, i.e. in either upside-up or upside-down directions. Therefore, when an electrical plug connector is inserted into the standing-type electrical receptacle connector with a first orientation, the flat contact portions of the first receptacle terminals are in contact with upper-row plug terminals of the electrical plug connector. Conversely, when the electrical plug connector is inserted into the standing-type electrical receptacle connector with a second orientation, the flat contact portions of the second receptacle terminals are in contact with the upper-row plug terminals of the electrical plug connector. Note that, the inserting orientation of the electrical plug connector is not limited by the standing-type electrical receptacle connector of the instant disclosure.

Detailed description of the characteristics and the advantages of the instant disclosure are shown in the following embodiments. The technical content and the implementation of the instant disclosure should be readily apparent to any person skilled in the art from the detailed description, and the purposes and the advantages of the instant disclosure should be readily understood by any person skilled in the art with reference to content, claims, and drawings in the instant disclosure.

DETAILED DESCRIPTION

Please refer toFIGS. 1 to 3, which illustrate a standing-type electrical receptacle connector100of an exemplary embodiment of the instant disclosure.FIG. 1illustrates a perspective view from the front of the standing-type electrical receptacle connector100.FIG. 2illustrates a perspective view from the back of the standing-type electrical receptacle connector100.FIG. 3illustrates an exploded view of the standing-type electrical receptacle connector100. The standing-type electrical receptacle connector100is soldered on a circuit board5by a standing manner; that is, the connecting direction of the standing-type electrical receptacle connector100is substantially perpendicular to the surface of the circuit board5. In this embodiment, the standing-type electrical receptacle connector100can provide a reversible or dual orientation USB Type-C connector interface and pin assignments, i.e., a USB Type-C receptacle connector. In this embodiment, the standing-type electrical receptacle connector100comprises a metallic shell11, a terminal seat2, and a grounding plate7.

Please refer toFIGS. 1, 3, and 5. The metallic shell11is a hollowed shell, and the metallic shell11comprises a receptacle cavity112. In addition, the metallic shell11may be a tubular member14. In this embodiment, the metallic shell11may be formed by a multi-piece member. The metallic shell11comprises an inner shell121and a cover plate122, and the inner shell11encloses the first insulated member212. The cover plate122is a hollowed shell and covers the rear of the inner shell121. In addition, the cover plate122comprises a plurality of fixing pieces123extending from the rear thereof for soldering with the circuit board5, but embodiments are not limited thereto. In some embodiments, the metallic shell11is a unitary member and only comprises the inner shell121. In addition, the inner shell121comprises a plurality of fixing pieces123extending from the rear thereof for soldering with the circuit board5. Accordingly, the cost for manufacturing the cover plate122can be saved. In addition, an insertion opening113with oblong shaped is formed at one side of the metallic shell11, the insertion opening113is for being inserted by an electrical plug connector, and the insertion opening113communicates with the receptacle cavity112.

Please refer toFIGS. 3 to 5. The terminal seat2comprises a first terminal module2aand a second terminal module2b.In this embodiment, the first terminal module2ais received in the receptacle cavity112of the metallic shell11. The first terminal module2acomprises a first insulated member21and a plurality of first receptacle terminals31. The first receptacle terminals31are held at the first insulated member21. The first receptacle terminals31comprise a plurality of ground terminals313, and each of the ground terminals313comprises a tail portion316. The tail portions316of the ground terminals313are extending out of the rear of the first insulated member21.

Please refer toFIGS. 3 to 5. In this embodiment, the first terminal module2acomprises a rear block211extending from the rear of the first insulated member21and abutted against the periphery of the metallic shell11. In addition, several extension plates are extending from two sides of the rear of the cover plate122to be engaged with the rear block211. Therefore, the cover plate122can be firmly assembled with the first insulated member21. Furthermore, in some embodiments, the first terminal module2amay not comprise the rear block211, and the first insulated member21is directly assembled in the inner shell121. In addition, as shown inFIG. 6, the inner wall of the inner shell121may comprise a buckling sheet125protruding therefrom, and the terminal seat2may comprise a recessed portion24, so that when the terminal seat2is assembled in the inner shell121, the buckling sheet125is engaged with the recessed portion24. Accordingly, the terminal seat2can be firmly positioned with the metallic shell11.

Please refer toFIGS. 3 to 5. The second terminal module2bis received in the receptacle cavity112of the metallic shell11. The second terminal module2bis combined with the first terminal module2a.The second terminal module2bcomprises a second insulated member22and a plurality of second receptacle terminals41. The second receptacle terminals41are held at the second insulated member22. The second receptacle terminals41comprise a plurality of ground terminals413, and each of the ground terminals413comprises a tail portion416. The tail portions416of the ground terminals413are extending out of the rear of the second insulated member22. Moreover, an assembling space W is formed between the tail portion316of each of the ground terminals313and the tail portion416of the corresponding ground terminal413, as shown inFIG. 9A. The assembling space W means, the space between the tail portion316of each of the ground terminals313and the tail portion416of the corresponding ground terminal413is only for assembling a leg72of the grounding plate7.

Please refer toFIGS. 3, 6, and 10. In this embodiment, the terminal seat2comprises a tongue portion221extending from one end of the second insulated member22, but not from the first insulated member21. Alternatively, two tongue portions may be respectively extending from the first insulated member21and the second insulated member22, the two tongue portions are stacked with each other, and the grounding plate7is between the two tongue portions. In a further option, the tongue portion may be extending from one end of the first insulated member21, but not from the second insulated member22.

Please refer toFIGS. 3, 6, and 10. In this embodiment, the second insulated member22and the tongue portion221are manufactured by injection molding technique or the like, so that the second insulated member22and the tongue portion221are integrated with each other to form a one-piece member. In addition, the grounding plate7is buried in the second insulated member22and the tongue portion221. In one embodiment, the first terminal module2aand the second terminal module2bare combined with each other by assembling, but embodiments are not limited thereto. In some embodiments, the first terminal module2aand the second terminal module2bmay be formed by injection molding or the like for being adapted to different needs. In addition, the tongue portion221has two opposite surfaces, one is a first surface221a(i.e., the upper surface), and the other is a second surface221b(i.e., the lower surface). In addition, the front lateral surface223of the tongue portion221is connected the first surface221awith the second surface221band is close to the insertion opening113. In other words, the front lateral surface223is near to the insertion opening113and perpendicularly connected to the first surface221aand the second surface221b,respectively.

Please refer toFIGS. 3, 6, and 10. In this embodiment, the first receptacle terminals31and the first insulated member21are combined with each other by insert-molded techniques; likewise, the second receptacle terminals41and the second insulated member22are combined with each other by insert-molded techniques.

Please refer toFIGS. 3, 4, 10, and 11. The first receptacle terminals31comprise a plurality of first signal terminals311, at least one power terminal312, and a plurality of ground terminals313. The first signal terminals31comprises a plurality of pairs of first high-speed signal terminals3111/3113and a pair of first low-speed signal terminals3112. Referring toFIG. 11, the first receptacle terminals31comprise, from left to right, a ground terminal313(Gnd), a first pair of first high-speed signal terminals3111(TX1+−, differential signal terminals for high-speed signal transmission), a power terminal312(PowerNBUS), a first function detection terminal3141(CC1, a terminal for inserting orientation detection of the connector and for cable recognition), a pair of first low-speed signal terminals3112(D+−, differential signal terminals for low-speed signal transmission), a supplement terminal3142(SBU1, a terminal can be reserved for other purposes), another power terminal312(PowerNBUS), a second pair of first high-speed signal terminals3113(RX2+−, differential signal terminals for high-speed signal transmission), and another ground terminal313(Gnd). In this embodiment, twelve first receptacle terminals31are provided for transmitting USB 3.0 signals. Each pair of the first high-speed signal terminals3111/3113is between the corresponding power terminal312and the adjacent ground terminal313. The pair of the first low-speed signal terminals3112is between the first function detection terminal3141and the supplement terminal3142.

In some embodiments, the rightmost ground terminal313(Gnd) (or the leftmost ground terminal313(Gnd)) or the first supplement terminal3142(SBU1) can be further omitted. Therefore, the total number of the first receptacle terminals31can be reduced from twelve terminals to seven terminals. Furthermore, the ground terminal313(Gnd) may be replaced by a power terminal312(PowerNBUS) and provided for power transmission. In this embodiment, the width of the power terminal312(PowerNBUS) may be, but not limited to, equal to the width of the first signal terminal311. In some embodiments, the width of the power terminal312(Power/VBUS) may be greater than the width of the first signal terminal311and a standing-type electrical receptacle connector100having the power terminal312(PowerNBUS) can be provided for large current transmission.

Please refer toFIGS. 3, 4, 10, and 11. The first receptacle terminals31are held in the first insulated member21and formed as the upper-row terminals of the standing-type electrical receptacle connector100. Each of the first receptacle terminals31comprises a flat contact portion315, a body portion317, and a tail portion316. For each of the first receptacle terminals31, the body portion317is held in the first insulated member21, the flat contact portion315is extending forward from the body portion317in the rear-to-front direction and partly exposed upon the first surface221aof the tongue portion221, and the tail portion316is extending backward from the body portion317in the front-to-rear direction and protruding from the rear of the first insulated member21. The first signal terminals311are disposed at the first surface221aand transmit first signals (namely, USB 3.0 signals). The tail portions316are extending horizontally from the body portions317to form vertical legs (with respect to the insertion direction of the circuit board5), named through-hole legs, that are inserted into holes drilled in a printed circuit board by using through-hole technology. In addition, the width across all of the tail portions316is greater than the width across all of the body portions317. Therefore, the tail portion316and the body portion317of each of the first receptacle terminals31are not aligned along the same line, and the distance between two adjacent tail portions316correspond the distance between two adjacent soldering holes of the circuit board5.

Please refer toFIGS. 3, 4, and 7A. In this embodiment, the first receptacle terminals31further comprise a plurality of bending portions318. Each of the bending portions318is extending between the corresponding tail portion316and the corresponding body portion317, so that the distance between the tail portion316of each of the ground terminals313and the corresponding leg72of the grounding plate7can be widened. In other words, the bending portions318are extending toward a direction away from the grounding plate7, so that the distance between the tail portion316of each of the ground terminals313and the corresponding leg72of the grounding plate7can be adjusted. In some embodiments, the bending portions318may be extending toward the grounding plate7(as shown inFIG. 7B), so that the tail portion316of each of the ground terminals313can be drawn close with the corresponding leg72. Specifically, the tail portions316of the ground terminals313are respectively drawn close with the legs72at two sides of the grounding plate7. Here, the term “drawn close” means that the components may be in contact with each other (as shown inFIG. 9D) or spaced apart from each other by a distance D1′ (as shown inFIG. 9A).

Please refer toFIGS. 3, 4, 10, and 11. The second receptacle terminals41comprise a plurality of second signal terminals411, at least one power terminal412, and a plurality of ground terminals413. The second receptacle terminals41comprise a plurality of pairs of second high-speed signal terminals4111/4113and a pair of second low-speed signal terminals4112. Referring toFIG. 11, the second receptacle terminals41comprise, from right to left, a ground terminal413(Gnd), a first pair of second high-speed signal terminals4111(TX2+−, differential signal terminals for high-speed signal transmission), a power terminal412(PowerNBUS), a second function detection terminal4141(CC2, a terminal for inserting orientation detection of the connector and for cable recognition), a pair of second low-speed signal terminals4112(D+−, differential signal terminals for low-speed signal transmission), a supplement terminal4142(SBU2, a terminal can be reserved for other purposes), another power terminals412(PowerNBUS), a second pair of second high-speed signal terminals4113(RX1+−, differential signal terminals for high-speed signal transmission), and another ground terminal413(Gnd). Each pair of the second high-speed signal terminals4111/4113is between the corresponding power terminal412and the adjacent ground terminal413. The pair of the second low-speed signal terminals4112is between the second function detection terminal4141and the supplement terminal4142.

In some embodiments, the rightmost ground terminal413(or the leftmost ground terminal413) or the second supplement terminal4142(SBU2) can be further omitted. Therefore, the total number of the second receptacle terminals41can be reduced from twelve terminals to seven terminals. Furthermore, the rightmost ground terminal413may be replaced by a power terminal412and provided for power transmission. In this embodiment, the width of the power terminal412(Power/VBUS) may be, but not limited to, equal to the width of the second signal terminal411. In some embodiments, the width of the power terminal412(Power/VBUS) may be greater than the width of the second signal terminal411and a standing-type electrical receptacle connector100having the power terminal412(Power/VBUS) can be provided for large current transmission.

Please refer toFIGS. 3, 4, 10, and 11. The second receptacle terminals41are held in the second insulated member11and formed as the lower-row terminals of the standing-type electrical receptacle connector100. In addition, the first receptacle terminals31are substantially aligned parallel with the second receptacle terminals41. Each of the second receptacle terminals41comprises a flat contact portion415, a body portion417, and a tail portion416. For each of the second receptacle terminals41, the body portion417is held in the second insulated member22and the tongue portion221, the flat contact portion415is extending from the body portion417in the rear-to-front direction and partly exposed upon the second surface221bof the tongue portion221, and the tail portion416is extending backward from the body portion417in the front-to-rear direction and protruding from the rear of the second insulated member22. The second signal terminals411are disposed at the second surface221band transmit second signals (i.e., USB 3.0 signals). The tail portions416are extending horizontally from the body portions417to form vertical legs (with respect to the insertion direction of the circuit board5), named through-hole legs, that are inserted into holes drilled in a printed circuit board by using through-hole technology. In addition, each of the tail portions416is obliquely extending to the corresponding body portion417, so that the distance between two adjacent tail portions416can be widened. Accordingly, the width across all of the tail portions416is greater than the width across all of the body portions417. Therefore, the tail portion416and the body portion417of each of the second receptacle terminals41are not aligned along the same line, and the distance between two adjacent tail portions416corresponds to the distance between two adjacent soldering holes of the circuit board5.

Please refer toFIGS. 3, 4, and 7A. In this embodiment, the second receptacle terminals41further comprise a plurality of bending portions418. Each of the bending portions418is extending between the corresponding tail portion416and the corresponding body portion417, so that the distance between the tail portion416of each of the ground terminals413and the corresponding leg72of the grounding plate7can be widened. In other words, the bending portions418are extending toward a direction away from the grounding plate7, so that the distance between the tail portion416of each of the ground terminals413and the corresponding leg72of the grounding plate7can be adjusted. Specifically, the distance between the tail portion316of each of the ground terminals313and the corresponding leg72of the grounding plate7is equal to the distance between the tail portion416of the corresponding ground terminal413and the leg72of the grounding plate7, but embodiments are not limited thereto. In some embodiments, the bending portions418may be extending toward the grounding plate7(as shown inFIG. 7B), so that the tail portion416of each of the ground terminals413can be drawn close with the leg72. Specifically, the tail portions416of the ground terminals413are respectively drawn close with the legs72at two sides of the grounding plate7. Here, the term “drawn close” means that the components may be in contact with each other (as shown inFIG. 9D) or spaced apart from each other by a distance D1″ (as shown inFIG. 9A). In addition, the distance between the tail portion316of each of the ground terminals313and the corresponding leg72may be equal to the distance between the tail portion416of the corresponding ground terminal413and the leg72.

The crosstalk interference can be reduced by the shielding of the grounding plate7when the flat contact portions315,415transmit signals. Furthermore, the structural strength of the tongue portion221can be improved by the assembly of the grounding plate7. In addition, the legs72of the grounding plate7are exposed from the second insulated member22and in contact with the circuit board5for conduction and grounding.

Please refer toFIGS. 3, 6, and 10. The grounding plate7is between the first terminal module2aand the second terminal module2b.The grounding plate7comprises a plate body71and a plurality of legs72. The plate body71is between the first receptacle terminals31and the second receptacle terminals41, i.e., the plate body71is held at the second insulated member22, and the plate body71is between the flat contact portions315of the first receptacle terminals31and the flat contact portions415of the second receptacle terminals41. The plate body71is assembled on the surface of the second insulated member22. The plate body71is lengthened and widened, so that the front of the plate body71is near to the front lateral surface223of the tongue portion221, two sides of the plate body71is near to two sides of the tongue portion221, and the rear of the plate body71is near to the rear of the second insulated member22. Accordingly, the plate body71can be disposed on the tongue portion221and the second insulated member22, and the structural strength of the tongue portion221and the shielding performance of the tongue portion221can be improved.

Please refer toFIGS. 3, 4, 5, 7A, and 9A. The legs72of the grounding plate7are respectively extending from two sides of the rear of the plate body71and extending out of the rear of the second insulated member22. The legs72are positioned in the assembling space W. In other words, each of the legs72is disposed between the corresponding tail portion316and the corresponding tail portion416; namely, each of the legs72is disposed between the tail portion316of the corresponding ground terminal313and the tail portion416of the corresponding ground terminal413. In addition, a first leg surface72aof each of the legs72is adjacent to the tail portion316of the corresponding ground terminal313; specifically, the space (if have) between the leg72and the tail portion316is free of other components or structures. Likewise, a second leg surface72bof each of the legs72is adjacent to the tail portion416of the corresponding ground terminal413; specifically, the space (if have) between the leg72and the tail portion416is free of other components or structures. Moreover, as shown from the rear of the standing-type electrical receptacle connector100, a cross section portion of each of the legs72, a cross section portion of the tail portion316of the corresponding ground terminal313, and a cross section portion of the tail portion416of the corresponding ground terminal413are aligned along a vertical line O and overlapped with each other. The term “overlap” means that, from a top view, each of the legs72, the tail portion316of the corresponding ground terminal313, and the tail portion416of the corresponding ground terminal413are aligned with each other, with or without spaces therebetween. When the legs72and the tail portions316,416of the corresponding ground terminals313,413have the same width, the edges of the legs72and the edges of the tail portions316,416are aligned with each other. Accordingly, such overlapped configuration allows the diameter511′ of the ground soldering hole51′ for being inserted by the leg72and the tail portions316,416can be reduced. In other words, the diameter511′ of the ground soldering hole51′ may be slightly greater than the overall width of the leg72and the tail portions316,416. Therefore, the space on the circuit board5for drilling holes can be reduced, and available spaces on the circuit board5for other purposes can be increased; that is, the available spaces on the circuit board5for layout or wiring can be increased.

Please refer toFIGS. 3 and 8. From the rear of the standing-type electrical receptacle connector100, the tail portions316of the first signal terminals311, the tail portion316of the power terminal312, and the tail portions316of the ground terminals313are aligned along a first horizontal line L1. Likewise, the tail portions416of the second signal terminals411, the tail portion416of the power terminal412, and the tail portions416of the ground terminals413are aligned along a second horizontal line L2. The vertical line O along which the legs72, the tail portions316of the ground terminals313, and the tail portions416of the ground terminals413are aligned is substantially perpendicular to the first horizontal line L1and the second horizontal line L2.

Please refer toFIG. 3, in which the grounding plate7further comprises a plurality of hooks73. The plate body71is between the flat contact portions315of the first receptacle terminals31and the flat contact portions415of the second receptacle terminals41. The hooks73are extending outward from two sides of the front of the plate body71and protruding out of the front lateral surface223and two sides of the tongue portion221. When an electrical plug connector is mated with the standing-type electrical receptacle connector100, elastic pieces at two sides of an insulated housing of the electrical plug connector are engaged with the hooks73, and the elastic pieces would not wear against the tongue portion221of the standing-type electrical receptacle connector100. Hence, the grounding plate7can be in contact with the metallic shell11for conduction and grounding.

In addition, in the forgoing embodiments, the widths of the leg72, the tail portions316, and the tail portions416are the same, and the edges of the legs72and the edges of the tail portions316,416are aligned with each other, but embodiments are not limited thereto. Please refer toFIG. 9B. In some embodiments, the cross section portion of each of the legs72, the cross section portion of the tail portion316of the corresponding ground terminal313, and the cross section portion of the tail portion416of the corresponding ground terminal413are aligned along the vertical line O, but unaligned with each other. In addition, the widths of the leg72, the tail portions316, and the tail portions416may be different. Moreover, the position of each of the legs72and the positions of the tail portions316,416of the corresponding ground terminals313,413can be different. For example, in this embodiment, the cross section portion of each of the legs72and the cross section portions of the tail portions316,416of the corresponding ground terminals313,413are aligned along the vertical line O, but embodiments are not limited thereto. The cross section portion of each of the legs72and the cross section portions of the tail portions316,416of the corresponding ground terminals313,413may be aligned along a transversal line or a slant line. Furthermore, the leg72(or the tail portion316/416) may be shifted leftward or rightward, so that the leg72and the tail portions316,416are partially overlapped with each other. In other words, the center of the cross section portion of the each of the legs72, the center of the cross section portion of the tail portion316of the corresponding ground terminal313, and the center of the cross section portion of the tail portion416of the corresponding ground terminal13are not aligned with each other, so that the edges of the legs72and the edges of the tail portions316,416are not aligned with each other, i.e., aligned by an offset. In this configuration, each of the legs72, the tail portion316of the corresponding ground terminal313, and the tail portion416of the corresponding ground terminal413can also be inserted into the same ground soldering hole51′ for soldering with the circuit board5. In addition, in this embodiment, the cross section portion of each of the legs72, the cross section portion of the tail portion316of the corresponding ground terminal313, and the cross section portion of the tail portion416of the corresponding ground terminal413are rectangular shaped, but may be other geometrical shapes, like a round shape.

Please refer toFIG. 9A. In this embodiment, from a lateral sectional view of the standing-type electrical receptacle connector100, a surface of each of the tail portions316is spaced from the first leg surface72aof the corresponding leg72by a distance D1′. In addition, a surface of each of the tail portions416is spaced from the second leg surface72bof the corresponding leg72by a distance D1″. The distance D1′ is equal to the distance D1″. Therefore, each of the legs72, the corresponding tail portion316, and the corresponding tail portion416are inserted into the same ground soldering hole51′. Therefore, the number of the soldering holes of the circuit board5can be reduced. In this embodiment, the number of the soldering holes of the circuit board5is less than that of a conventional circuit board. In other words, the number of the soldering holes of the circuit board equals to the number of the soldering pins (i.e., the legs and the tail portions) in the conventional; while in this embodiment, several soldering pins may be inserted into the same soldering hole. Accordingly, the cost for soldering procedure can be reduced.

In some embodiments, from a lateral sectional view of the standing-type electrical receptacle connector100, the distance D1′ between the surface of each of the tail portions316and the first leg surface72aof the corresponding leg72may be less than the distance D1″ between the surface of each of the tail portions416and the second leg surface72bof the corresponding leg72. Alternatively, the distance D1′  between the surface of each of the tail portions316and the first leg surface72aof the corresponding leg72may be greater than the distance D1″ between the surface of each of the tail portions416and the second leg surface72bof the corresponding leg72.

Please refer toFIG. 9C. In some embodiments, from a lateral sectional view of the standing-type electrical receptacle connector100, the surface of each of the tail portions316is in contact with the first leg surface72aof the corresponding leg72, and the surface of each of the tail portions416is spaced from the second leg surface72bof the corresponding leg72by the distance D1″. Therefore, the diameter511″ of the ground soldering hole51″ in this embodiment is less than the diameter511′ of the ground soldering hole51′ in the foregoing embodiment (where the leg72is spaced from the tail portions316,416by the distances D1′ and D1″, respectively). Alternatively, the surface of each of the tail portions316is in contact with the first leg surface72aof the corresponding leg72, and the surface of each of the tail portions416is in contact with the second leg surface72bof the corresponding leg72. Therefore, the diameter511′″ of the ground soldering hole51′″ in this embodiment is further less than the diameter511″ of the ground soldering hole51″ (where the leg72is in contact with the tail portion316and spaced from the tail portion416by the distance D1″). Accordingly, the space of the circuit board5for drilling can be further reduced, and the available area of the circuit board5can further increase.

Please refer toFIGS. 5, 7A, and 8. The standing-type electrical receptacle connector100further comprises the circuit board5. The circuit board5comprises a plurality of ground soldering holes51′ and a plurality of terminal soldering holes52. The ground soldering holes51′ and the terminal soldering holes52are formed on the circuit board5. The diameter511′ of each of the ground soldering holes51′ is greater than the diameter521of each of the terminal soldering holes52. That is, the diameter511′ of the ground soldering hole51′ allows the insertion of several soldering pins; in this embodiment, one tail portion316of the ground terminal313, one tail portion416of the ground terminal413, and one leg72are inserted into the ground soldering hole51′. Conversely, the diameter521of the terminal soldering hole52allows the insertion of one soldering pin; in this embodiment, the tail portion316of each of the first signal terminals311, the tail portion316of the power terminal312, the tail portion416of each of the second signal terminals411, and the tail portion416of the power terminal412are respectively inserted into the terminal soldering holes52.

Please refer toFIGS. 3, 4, and 10. In this embodiment, the first receptacle terminals31and the second receptacle terminals41are held at the first surface221aand the second surface221bof the tongue portion221; which may be, the first receptacle terminals31are held at the first surface221aof the tongue portion221and the second receptacle terminals41are held at the second surface221bof the tongue portion221, or the first receptacle terminals31are held at the second surface221bof the tongue portion221and the second receptacle terminals41are held at the first surface221aof the tongue portion221. Specifically, each pair of the first high-speed signal terminals3111/3113are spaced from the corresponding pair of the second high-speed signal terminals4111/4113by a uniform interval. Therefore, the signal interference problem between each pair of the first high-speed signal terminals3111/3113and the corresponding pair of the second high-speed signal terminals4111/4113can be prevented and improved.

Please refer toFIGS. 3, 10, and 11. Pin-assignments of the first receptacle terminals31and the second receptacle terminals41are point-symmetrical with a central point of the receptacle cavity112as the symmetrical center. In other words, pin-assignments of the first receptacle terminals31and the second receptacle terminals41have 180 degree symmetrical design with respect to the central point of the receptacle cavity112as the symmetrical center. The dual or double orientation design enables an electrical plug connector to be inserted into the standing-type electrical receptacle connector100in either of two intuitive orientations, i.e., in either upside-up or upside-down directions. Here, point-symmetry means that after the first receptacle terminals31(or the second receptacle terminals41), are rotated by 180 degrees with the symmetrical center as the rotating center, the first receptacle terminals31and the second receptacle terminals41are overlapped. That is, the rotated first receptacle terminals31are arranged at the position of the original second receptacle terminals41, and the rotated second receptacle terminals41are arranged at the position of the original first receptacle terminals31. In other words, the first receptacle terminals31and the second receptacle terminals41are arranged upside down, and the pin assignments of the flat contact portions315are left-right reversal with respect to that of the flat contact portions415. An electrical plug connector is inserted into the standing-type electrical receptacle connector100with a first orientation where the first surface221ais facing up, for transmitting first signals. Conversely, the electrical plug connector is inserted into the standing-type electrical receptacle connector100with a second orientation where the first surface221ais facing down, for transmitting second signals. Furthermore, the specification for transmitting the first signals is conformed to the specification for transmitting the second signals. Note that, the inserting orientation of the electrical plug connector is not limited by the standing-type electrical receptacle connector100according embodiments of the instant disclosure.

Additionally, in some embodiments, the standing-type electrical receptacle connector100is devoid of the first receptacle terminals31(or the second receptacle terminals41) when an electrical plug connector to be mated with the standing-type electrical receptacle connector100has upper and lower plug terminals. In the case that the first receptacle terminals31are omitted, the upper plug terminals or the lower plug terminals of the electrical plug connector are in contact with the second receptacle terminals41of the standing-type electrical receptacle connector100when the electrical plug connector is inserted into the standing-type electrical receptacle connector100with the dual orientations. Conversely, in the case that the second receptacle terminals41are omitted, the upper plug terminals or the lower plug terminals of the electrical plug connector are in contact with the first receptacle terminals31of the standing-type electrical receptacle connector100when the electrical plug connector is inserted into the standing-type electrical receptacle connector100with the dual orientations.

Please refer toFIGS. 3 and 10. In this embodiment, as viewed from the front of the receptacle terminals31,41, the position of the first receptacle terminals31corresponds to the position of the second receptacle terminals41. In other words, the position of the flat contact portions315correspond to the position of the flat contact portions415, but embodiments are not limited thereto. In some embodiments, the first receptacle terminals31may be aligned by an offset with respect to the second receptacle terminals41. That is, the flat contact portions315are aligned by an offset with respect to the flat contact portions415. Accordingly, because of the offset alignment of the flat contact portions315,415, the crosstalk between the first receptacle terminals31and the second receptacle terminals41can be reduced during signal transmission. It is understood that, when the receptacle terminals31,41of the standing-type electrical receptacle connector100have the offset alignment, plug terminals of an electrical plug connector to be mated with the standing-type electrical receptacle connector100would also have the offset alignment. Hence, the plug terminals of the electrical plug connector can be in contact with the receptacle terminals31,41of the standing-type electrical receptacle connector100for power or signal transmission.

Please refer toFIG. 3. In this embodiment, the standing-type electrical receptacle connector100further comprises a plurality of conductive sheets. The conductive sheets are metal elongated plates and may comprise an upper conductive sheet and a lower conductive sheet. The upper conductive sheet is assembled on the upper portion of the first insulated member21, and the lower conductive sheet is assembled on the lower portion of the second insulated member22. When an electrical plug connector is mated with the standing-type electrical receptacle connector100, the front of a metallic shell of the electrical plug connector is in contact with the conductive sheets, the metallic shell of the electrical plug connector is efficiently in contact with the metallic shell11of the standing-type electrical receptacle connector100via the conductive sheets, and the electromagnetic interference (EMI) problem can be improved.

Based on the above, the tail portion of the ground terminal of the first receptacle terminal, the tail portion of the ground terminal of the second receptacle terminal, and the leg of the grounding plate are adjacent to and drawn close with each other, so that the tail portions and the leg can be inserted into the same ground soldering hole for soldering with the circuit board. Accordingly, the manufacturing of the circuit board can be simplified, and the cost for soldering procedure can be reduced. Moreover, the rear block extending from the rear of the second insulated member can be engaged with the cover plate, so that the cover plate can be positioned with the first insulated member as well as the second insulated member. Additionally, the rear block and the cover plate may be omitted in some embodiments, and the first insulated member and the second insulated member are directly assembled in the inner shell of the metallic shell. Therefore, the manufacturing cost of the connector can be reduced, and the connector can be adapted to different needs.

Furthermore, the first receptacle terminals and the second receptacle terminals are arranged upside down, and the pin-assignment of the flat contact portions of the first receptacle terminals is left-right reversal with respect to that of the flat contact portions of the second receptacle terminals. Accordingly, the standing-type electrical receptacle connector can have a 180 degree symmetrical, dual or double orientation design and pin assignments which enables the standing-type electrical receptacle connector to be mated with a corresponding plug connector in either of two intuitive orientations, i.e. in either upside-up or upside-down directions. Therefore, when an electrical plug connector is inserted into the standing-type electrical receptacle connector with a first orientation, the flat contact portions of the first receptacle terminals are in contact with upper-row plug terminals of the electrical plug connector. Conversely, when the electrical plug connector is inserted into the standing-type electrical receptacle connector with a second orientation, the flat contact portions of the second receptacle terminals are in contact with the upper-row plug terminals of the electrical plug connector. Note that, the inserting orientation of the electrical plug connector is not limited by the standing-type electrical receptacle connector of the instant disclosure.