Socket electrical connector

Abstract

A socket electrical connector includes a shielding housing, an insulating body, a first flat terminal, a second flat terminal, and a grounding piece; the insulating body is disposed inside the shielding housing, the first and second flat terminals and the grounding piece are disposed on the insulating body, the insulating body includes a base and a tongue plate, the tongue plate extends from one side of the base, the grounding piece includes a plate body, extending arms, and contact areas, the front end of the plate body is adjacent to the front side surface of the tongue plate, the rear end of the plate body extends to the base, the plate body is located between the first and second flat terminals, each extending arm extends outward from both sides behind the plate body to both sides of the base, and each contact area is formed on the surface of each extending arm to contact the inner wall surface of the shielding housing, and grounding and the effect of reducing electromagnetic interference can be provided through the grounding piece contacting the shielding housing.

Description

Technical Field

[0001] The present invention relates to an electrical connector, in particular to a socket electrical connector. Background Art

[0002] Generally, the interface of electrical connectors is the Universal Serial Bus (USB), which is widely used by the public. It has developed from the USB 2.0 transmission specification to the current USB 3.0 transmission specification with a faster transmission speed.

[0003] The appearance, structure, terminal contact method, number of terminals, distance (Pitch) between each terminal, and distribution (Pin Assignment) of each terminal of the existing USB Type-C socket electrical connector are completely different from those of the current USB socket electrical connector. The current USB Type-C socket electrical connector includes upper and lower rows of flat terminals arranged on a plastic core, and an outer iron shell covers the outside of the plastic core and other structures. A shielding sheet is provided on the plastic core, and the shielding sheet is located between the upper and lower rows of flat terminals.

[0004] However, the existing shielding sheet is located in the plastic core to provide shielding for the signal between the upper and lower rows of flat terminals to avoid signal interference. However, the shielding sheet is not provided with any structure that can contact the outer iron shell, so it cannot provide grounding and the effect of reducing electromagnetic interference (EMI). Therefore, how to solve the problems of the existing structure is the problem that relevant manufacturers must consider. Summary of the Invention

[0005] In view of the above problems, the present invention provides a socket electrical connector, including a shielding housing, an insulating body, a first flat terminal, a second flat terminal, and a grounding piece. The shielding housing includes a body and a receiving groove formed inside the body; the insulating body is disposed in the receiving groove of the shielding housing, and the insulating body includes a base and a tongue plate extending from one side of the base. The insulating body includes a first plate and a second plate. The first plate is disposed on the upper surface of the second plate. The first plate and the second plate are combined to jointly define the base and the tongue plate. The second plate includes two side walls, and each side wall protrudes upward from both sides of the second plate; the first flat terminal is disposed on the insulating body; the second flat terminal is disposed on the insulating body; the grounding piece is located in the insulating body, and the grounding piece includes a plate body, extending arms, a buckling space, and a contact area. The front end of the plate body is adjacent to the front side of the tongue plate, the rear end of the plate body extends to the base, the plate body is located between the first flat terminal and the second flat terminal, each extending arm is bent from both sides of the plate body into a hanging ear structure, each hanging ear structure is respectively disposed inside, on the top, and outside each side wall, each buckling space is respectively formed in each extending arm to accommodate each side wall, and each contact area is formed on the outer surface of each extending arm to contact the inner wall surface of the body.

[0006] In some embodiments, the socket electrical connector further includes conductive pieces. Each conductive piece is located in the insulating body, and each conductive piece includes a flat plate and a contact arm. Each flat plate respectively covers both sides of the tongue plate, and each contact arm extends from the edge of each flat plate to contact the inner wall surface of the body.

[0007] In some embodiments, the grounding piece includes protrusions. Each protrusion is located in the contact area to contact the inner wall surface of the body.

[0008] In some embodiments, the shielding housing includes contact structures. Each contact structure is formed on the inner wall surface of the body to contact the contact area.

[0009] In some embodiments, the grounding piece includes through holes formed in the plate body.

[0010] In some embodiments, the insulating body further includes a third plate disposed between the first plate and the second plate. The third plate forms the tongue plate. The first plate, the second plate, and the third plate are combined to jointly define the base and the tongue plate, and the grounding piece is disposed on the third plate.

[0011] In some embodiments, the grounding piece includes a locking hole formed in the plate body, and the second plate includes a locking block locked in the locking hole.

[0012] In some embodiments, the grounding piece includes a shielding plate which extends from the edge of the plate body and is disposed between the first flat terminal and the second flat terminal.

[0013] In some embodiments, the grounding piece includes hook structures which respectively extend outward from both sides of the front of the plate body and protrude from both sides of the tongue plate.

[0014] In some embodiments, the shielding housing includes a cover plate which covers one side of the body. The cover plate includes pins which respectively extend from the bottom of the cover plate.

[0015] In some embodiments, the shielding housing includes a hollowed-out area which is formed on one side of the body. When the cover plate is in the open position, the hollowed-out area is exposed. When the cover plate is in the closed position, the cover plate is inserted from the top of one side of the body into the bottom of one side of the body.

[0016] In some embodiments, the body includes an annular wall, and the accommodating groove is formed inside the annular wall to accommodate the insulating body.

[0017] In some embodiments, the cover plate extends from one side of the housing to cover the opening of the annular wall. The cover plate includes an opening area which is recessed from the bottom of the cover plate.

[0018] In some embodiments, the shielding housing includes snap pieces which respectively extend relatively from both sides of the rear end of the annular wall. Both sides of the cover plate are respectively snapped onto the snap pieces to cover the hollowed-out area.

[0019] In some embodiments, the body includes a housing which covers the annular wall.

[0020] In some embodiments, the shielding housing includes snap pieces which respectively extend relatively from both sides of the rear end of the housing. Both sides of the cover plate are respectively snapped onto the snap pieces to cover the hollowed-out area.

[0021] In some embodiments, the socket electrical connector further includes a circuit board which includes terminal contacts and grounding contacts. Each of the terminal contacts is disposed corresponding to the position of the hollowed-out area and solders to the first flat terminal, and each of the pins of the cover plate is connected to each of the grounding contacts.

[0022] In some embodiments, each of the grounding contacts is a connecting hole, and each of the pins is inserted into the connecting hole to contact the inner wall surface of the connecting hole.

[0023] In some embodiments, each of the terminal contacts is an elongated welding pad, and the first flat terminal contacts each of the elongated welding pads.

[0024] In some embodiments, the second plate includes an assembling portion, each of the assembling portions is respectively recessed in the two side walls, and each of the extending arms is respectively buckled to each of the assembling portions.

[0025] The present invention also provides a socket electrical connector, including a shielding housing, an insulating body, a first flat terminal, a second flat terminal, a grounding piece, and a conductive piece. The shielding housing includes a body and a receiving groove formed inside the body. The insulating body is disposed in the receiving groove of the shielding housing. The insulating body includes a base, a tongue plate, concave holes, and fastening holes. The tongue plate extends from one side of the base. The insulating body includes a first plate and a second plate. The first plate is disposed on the upper surface of the second plate. The first plate and the second plate are combined to jointly define the base and the tongue plate. Each of the concave holes is respectively formed on two sides of the tongue plate. Each of the fastening holes is respectively formed on two sides of the tongue plate and adjacent to each of the concave holes. The first flat terminal is disposed on the insulating body. The second flat terminal is disposed on the insulating body. The grounding piece is located in the insulating body. The grounding piece includes a plate body located between the first flat terminal and the second flat terminal. Each of the conductive pieces is located in the insulating body. Each of the conductive pieces includes a flat plate, a protrusion, a fastening arm, and a contact arm. Each of the flat plates respectively covers two sides of the tongue plate. Each of the protrusions respectively extends outward from the side edge of each of the flat plates into each of the concave holes. The protrusion located on one side of the tongue plate contacts the first flat terminal, and the protrusion located on the other side of the tongue plate contacts the second flat terminal. Each of the fastening arms respectively extends outward from the side edge of each of the flat plates into each of the fastening holes. Each of the fastening arms contacts the plate body of the grounding piece. Each of the contact arms extends from the edge of each of the flat plates to contact the inner wall surface of the body.

[0026] In some embodiments, the grounding piece includes through holes formed in the plate body.

[0027] In some embodiments, the insulating body further includes a third plate disposed between the first plate and the second plate. The third plate forms the tongue plate. The first plate, the second plate, and the third plate are combined to jointly define the base and the tongue plate. The grounding piece is disposed on the third plate. Each of the concave holes is respectively formed in the first plate and the second plate. Each of the fastening holes is respectively formed in the first plate, the second plate, and the third plate.

[0028] In some embodiments, the grounding piece includes a locking hole formed in the plate body, and the second plate includes a locking block locked in the locking hole.

[0029] In some embodiments, the grounding piece includes a shielding plate extending from the edge of the plate body and disposed between the first flat terminal and the second flat terminal.

[0030] In some embodiments, the grounding piece includes a hook structure, and the hook structures respectively extend outward from both sides of the front of the plate body to protrude from both sides of the tongue plate.

[0031] In some embodiments, the shielding housing includes a cover plate that covers one side of the body, and the cover plate includes pins, and each pin extends from the bottom of the cover plate.

[0032] In some embodiments, the shielding housing includes a hollowed-out area formed on one side of the body. When the cover plate is in the open position, the hollowed-out area is exposed. When the cover plate is in the closed position, the cover plate is inserted from the top of one side of the body into the bottom of one side of the body.

[0033] In some embodiments, the body includes an annular wall, and the accommodating groove is formed inside the annular wall to accommodate the insulating body.

[0034] In some embodiments, the cover plate extends from one side of the housing to cover the opening of the annular wall, and the cover plate includes an opening area that is recessed from the bottom of the cover plate.

[0035] In some embodiments, the shielding housing includes snap pieces, and the snap pieces respectively extend relatively from both sides of the rear end of the annular wall, and both sides of the cover plate are respectively snapped onto the snap pieces to cover the hollowed-out area.

[0036] In some embodiments, the body includes a housing that covers the annular wall.

[0037] In some embodiments, the shielding housing includes snap pieces, and the snap pieces respectively extend relatively from both sides of the rear end of the housing, and both sides of the cover plate are respectively snapped onto the snap pieces to cover the hollowed-out area.

[0038] In some embodiments, the socket electrical connector further includes a circuit board, and the circuit board includes terminal contacts and grounding contacts. Each terminal contact is arranged corresponding to the position of the hollowed-out area and solders a first flat terminal, and each pin of the cover plate is connected to each grounding contact.

[0039] In some embodiments, each grounding contact is a connecting hole, and each pin is inserted into the connecting hole to contact the inner wall surface of the connecting hole.

[0040] In some embodiments, each terminal contact is an elongated welding pad, and the first flat terminal contacts each elongated welding pad.

[0041] In the above embodiments, the first flat terminal is located on one side of the tongue plate and transmits a set of first signals, and the second flat terminal is located on the other side of the tongue plate and transmits a set of second signals. The transmission specifications of the set of first signals conform to the transmission specifications of the set of second signals. The first flat terminal and the second flat terminal are point-symmetric to each other with the center point of the accommodation groove as a center of symmetry. The arrangement position of the first flat terminal corresponds to the arrangement position of the second flat terminal.

[0042] By lengthening the volume of the grounding piece, the shielding effect and the strength of the tongue plate are improved. And through the extension arm of the grounding piece contacting the inner wall surface of the body, grounding is provided and the electromagnetic interference (EMI) effect can be reduced. Also, through each contact arm of the conductive piece contacting the inner wall surface of the body, when the plug electrical connector is plugged into the socket electrical connector, the front end of the shielding housing of the plug electrical connector will contact the conductive piece, connecting the shielding housing of the plug electrical connector to the shielding outer shell of the socket electrical connector. Through the effective conduction of the conductive piece, the grounding and the electromagnetic interference (EMI) reduction effect are improved.

[0043] In addition, by arranging the cover plate on one side of the shielding outer shell, a hollow area is formed at the position of the cover plate, and the soldering condition of the first flat terminal and the circuit board is inspected through the hollow area.

[0044] Furthermore, through the structure of the protrusion, the fastening arm and the contact arm of the conductive piece, the protrusion contacts the first flat grounding terminal, the fastening arm contacts the grounding piece, and the contact arm contacts the inner wall surface of the body; enabling the conductive piece, the grounding piece and the shielding outer shell to be mutually conductive, providing grounding and the electromagnetic interference (EMI) reduction effect.

[0045] In addition, by making the first flat terminal and the second flat terminal of the socket electrical connector upside down, and the arrangement of the first contact section of the first flat terminal being opposite to the arrangement of the second contact section of the second flat terminal in the left-right direction, when the plug electrical connector is inserted forward into the socket electrical connector, the terminals of the plug electrical connector can be connected to the first contact section, and when the plug electrical connector is inserted backward into the socket electrical connector, the terminals of the plug electrical connector can also be connected to the second contact section. The socket electrical connector has the function of not restricting the forward or backward insertion of the plug electrical connector. Description of the Drawings

[0046] Figure 1 It is a schematic external view of the first embodiment of the present invention.

[0047] Figure 2 It is an exploded schematic view of the first embodiment of the present invention.

[0048] Figure 3 Exploded view diagram of another perspective of the first embodiment of the present invention.

[0049] Figure 4 Exploded view diagram during assembly of the first embodiment of the present invention.

[0050] Figure 5 Exploded view diagram of another combined form of the present invention.

[0051] Figure 6 Terminal pin position definition diagram of the first embodiment of the present invention.

[0052] Figure 7 External view diagram of the terminal of the first embodiment of the present invention.

[0053] Figure 8 Front view cross-sectional diagram of the first embodiment of the present invention.

[0054] Figure 9 Side view cross-sectional diagram of the first embodiment of the present invention.

[0055] Figure 10A Partial enlarged view diagram (one) of the contact between the grounding piece and the shielding housing of the first embodiment of the present invention.

[0056] Figure 10B Partial enlarged view diagram (two) of the contact between the grounding piece and the shielding housing of the first embodiment of the present invention.

[0057] Figure 10C Partial enlarged view diagram (three) of the contact between the grounding piece and the shielding housing of the first embodiment of the present invention.

[0058] Figure 11 External view diagram of the combined circuit board of the second embodiment of the present invention.

[0059] Figure 12 Exploded view diagram of the combined circuit board of the second embodiment of the present invention.

[0060] Figure 13 Top view diagram of the combined circuit board of the second embodiment of the present invention.

[0061] Figure 14 Side view partial enlarged view diagram of the combined circuit board of the second embodiment of the present invention.

[0062] Symbol description

[0063] 100 Socket electrical connector

[0064] 11 Shielding housing

[0065] 111 Body

[0066] 112 Accommodating groove

[0067] 113 Insertion frame opening

[0068] 121 Inner shell

[0069] 122 Outer shell

[0070] 14 Annular wall

[0071] 15 Cover plate

[0072] 151 Pin

[0073] 152 Opening area

[0074] 16 Hollow area

[0075] 17’ / 17’’ Snap piece

[0076] 18 Contact structure

[0077] 181 Elastic piece

[0078] 182 Protruding point

[0079] 2 Insulating body

[0080] 21 Base

[0081] 22 Tongue plate

[0082] 221 First side

[0083] 222 Second side

[0084] 223 Front side

[0085] 25 First plate

[0086] 26 Second plate

[0087] 26a Side wall

[0088] 261 Latching block

[0089] 262 Assembly part

[0090] 27 Third plate

[0091] 28 Concave hole

[0092] 29 Clamping hole

[0093] 31 First flat terminal

[0094] 311 First flat signal terminal

[0095] 3111 First pair of first flat high-speed signal terminals

[0096] 3112 First flat low-speed signal terminal

[0097] 3113 Second pair of first flat high-speed signal terminals

[0098] 312 First flat power terminal

[0099] 313 First flat ground terminal

[0100] 3141 First function detection terminal

[0101] 3142 First expansion terminal

[0102] 315 First contact section

[0103] 316 First welding section

[0104] 317 First connection section

[0105] 41 Second flat terminal

[0106] 411 Second flat signal terminal

[0107] 4111 First pair of second flat high-speed signal terminals

[0108] 4112 Second flat low-speed signal terminal

[0109] 4113 Second pair of second flat high-speed signal terminals

[0110] 412 Second flat power terminal

[0111] 413 Second flat ground terminal

[0112] 4141 Second function detection terminal

[0113] 4142 Second expansion terminal

[0114] 415 Second contact section

[0115] 416 Second welding section

[0116] 417 Second connection section

[0117] 5 Grounding plate

[0118] 51 Plate body

[0119] 511 Through hole

[0120] 512 Shielding plate

[0121] 53 Hook structure

[0122] 54 Extension arm

[0123] 541 Ear hook structure

[0124] 542 Buckling space

[0125] 55 Contact area

[0126] 56 Protruding point

[0127] 58 Latching hole

[0128] 6 Conductive sheet

[0129] 61 Flat plate

[0130] 62 Contact arm

[0131] 64 Protrusion

[0132] 65 Buckling arm

[0133] 9 Circuit board

[0134] 91 Terminal contact

[0135] 911 Extended welding pad

[0136] 92 Grounding contact

[0137] 921 Connection hole

[0138] 922 Welding pad. Specific embodiments

[0139] Referring to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , a first embodiment of the socket electrical connector 100 of the present invention, Figure 1 is a schematic external view, Figure 2 is an exploded schematic view, Figure 3 is an exploded schematic view from another perspective, Figure 4 is an exploded schematic view during assembly. Here, the socket electrical connector 100 conforms to the USB Type-C connection interface specification, and the socket electrical connector 100 includes a shielding housing 11, an insulating body 2, a first flat terminal 31, a second flat terminal 41, a grounding sheet 5, and a conductive sheet 6.

[0140] Referring to Figure 2 、 Figure 3 and Figure 4, the shielding housing 11 is a hollow housing. The shielding housing 11 includes a body 111, a receiving groove 112, a cover plate 15, and a hollow area 16. The receiving groove 112 is formed inside the body 111. The cover plate 15 and the body 111 are separate components. The cover plate 15 covers one side of the body 111. The cover plate 15 includes pins 151. Each pin 151 extends outward from both sides of the bottom of the cover plate 15. The hollow area 16 is formed at the position of the cover plate 15. Here, when the body 111 is composed of a multi-piece structure, the body 111 includes an annular wall 14 and a housing 122. The annular wall 14 is a hollow inner housing 121 structure relative to the housing 122 structure. The receiving groove 112 is formed inside the annular wall 14. The insulating body 2 is disposed in the receiving groove 112. The housing 122 is a cover plate member generally in an inverted U shape. The housing 122 covers the upper and both sides of the annular wall 14. The cover plate 15 is then coupled to the housing 122. Additionally, an arc-shaped insertion frame opening 113 is formed on one side of the shielding housing 11. The insertion frame opening 113 communicates with the receiving groove 112.

[0141] Refer to Figure 2 , Figure 3 and Figure 4 , in this embodiment, the shielding housing 11 includes snap pieces 17'. Here, each snap piece 17' is integral with the housing 122. Each snap piece 17' extends relatively from both sides of the rear end of the housing 122. An uncovered distance is reserved between each snap piece 17'. The range of the uncovered distance is the space of the hollow area 16. That is, the hollow area 16 is formed at the position of the cover plate 15. The hollow area 16 can be used to inspect each first welding section 316 of the first flat terminal 31. And when the cover plate 15 is in an open position, the hollow area 16 is exposed. When the cover plate 15 is in a closed position, the cover plate 15 covers the rear side of the housing 122, covering the hollow area 16. That is, when the cover plate 15 is assembled to the rear side of the housing 122 from top to bottom, both sides of the cover plate 15 are respectively buckled to each snap piece 17' to cover the hollow area 16. Here, the cover plate 15 includes latching protrusion points. Each latching protrusion point is disposed on both sides of the surface of the cover plate 15. Each snap piece 17' respectively includes a latching hole. The latching protrusion points are latched to the latching holes to fix the cover plate 15 on each snap piece 17'.

[0142] Refer to Figure 5, in this embodiment, the way the cover plate 15 is combined with the housing 122 is only an example and not limited thereto. In some embodiments, the cover plate 15 can be further combined with the annular wall 14, and the structure of the housing 122 can be omitted. That is to say, each buckle piece 17'' is integral with the annular wall 14, and each buckle piece 17'' extends relatively from both sides of the rear end of the annular wall 14. Both sides of the cover plate 15 are respectively buckled on each buckle piece 17'' to cover the hollow area 16. In addition, in some embodiments, the cover plate 15 can be further combined with the insulating body 2. That is to say, the insulating body 2 includes buckle pieces 17'. Each buckle piece 17' is integral with the base 21, and each buckle piece 17' extends relatively from both sides of the rear of the base 21. Both sides of the cover plate 15 are respectively buckled on each buckle piece 17' to cover the hollow area 16. In other words, each buckle piece 17' can be selectively applied to the shielding housing 11 or the insulating body 2 to increase the scope of application.

[0143] Refer to Figure 3 , Figure 4 and Figure 6 , in this embodiment, the cover plate 15 and the body 111 are separate components. When the cover plate 15 is assembled to one side of the body 111, the cover plate 15 can cover the opening on one side of the annular wall 14. That is to say, the cover plate 15 covers the hollow area 16 at the opening on one side of the annular wall 14, preventing the signals of the first flat terminal 31 or the second flat terminal 41 from spreading outside the annular wall 14 to achieve a shielding effect. In addition, it should be specifically noted that when the cover plate 15 is not assembled to one side of the body 111, the hollow area 16 at the opening on one side of the annular wall 14 is exposed, which is convenient for inspecting the welding condition of the first welding section 316 of the first flat terminal 31 and the terminal contact 91 of the circuit board 9, ensuring whether the first welding section 316 is in actual contact with each terminal contact 91, and whether the solders on each first welding section 316 are separated from each other to avoid short circuit. After the inspection is completed, the cover plate 15 can be assembled to the opening on one side of the annular wall 14 to cover the hollow area 16.

[0144] Refer to Figure 3 , Figure 6 and Figure 12, in this embodiment, each pin 151 of the cover plate 15 is a pin 151 structure designed in a fish-eye shape. Specifically, each pin 151 is a drop-shaped pin, and a hole is formed through the center of the drop-shaped pin. With this pin 151 type, it is connected to the circuit board 9 through the plug-in method. Here, the circuit board 9 includes terminal contacts 91 and ground contacts 92. Each terminal contact 91 is arranged corresponding to the position of the hollow area 16 and solders each first welding section. Each pin 151 of the cover plate 15 is connected to each ground contact 92. Each of the ground contacts 92 is a connecting hole 921. Each pin 151 is inserted into the connecting hole 921 and contacts the inner wall surface of the connecting hole 921. That is, the ground contacts 92 on the circuit board 9 are designed in a hole shape for each pin 151 to contact the ground contacts 92 in the connecting holes in a plug-in manner, so as to conduct the grounding effect between the shielding housing 11 and the circuit board 9. Through the connection type between the pins 151 and the circuit board 9, the process of welding can be omitted, and the movable cover plate 15 can be conveniently assembled or disassembled multiple times.

[0145] Refer to Figure 2 , Figure 3 and Figure 4 , in this embodiment, the insulating body 2 is arranged in the accommodating groove 112 of the shielding housing 11. The insulating body 2 forms a base 21 and a tongue plate 22. Here, the insulating body 2 includes a first plate 25, a second plate 26 and a third plate 27. The first plate 25 is arranged on the upper surface of the third plate 27, and the second plate 26 is arranged on the lower surface of the third plate 27. The first plate 25, the second plate 26 and the third plate 27 are combined to jointly define the base 21 and the tongue plate 22. Moreover, after the first plate 25, the second plate 26 and the third plate 27 are combined, the configurations of the base 21 and the tongue plate 22 are formed. Specifically, the third plate 27 is a flat and long plate member to form the tongue plate 22, the first plate 25 is a rectangular block to form the upper part structure of the base 21, and the second plate 26 is a rectangular block to form the lower part structure of the base 21. The third plate 27 is arranged between the first plate 25 and the second plate 26. The above three-piece first plate 25, second plate 26 and third plate 27 are not limited to this. In some implementation aspects, the insulating body 2 may at least include a two-piece first plate 25 and second plate 26, that is, only the first plate 25 and the second plate 26 are combined to jointly define the base 21 and the tongue plate 22. Here, the first plate 25 is arranged on the upper surface of the second plate 26, and the first plate 25 can form the upper part structure of the base 21, and the second plate 26 can form the lower part structure of the base 21. Moreover, the tongue plate 22 can be formed on the front side of the first plate 25 or the second plate 26. In this embodiment, the second plate 26 includes two side walls 26a. Each side wall 26a protrudes upward from both sides of the second plate 26 in the same direction, and an installation space is formed between the two side walls 26a to provide installation for the first plate 25.

[0146] Refer toFigure 2 , Figure 3 and Figure 4 , in this embodiment, the first plate 25, the second plate 26 and the third plate 27 are respectively formed by insert-molding. The first plate 25 is combined with the first flat terminal 31, the second plate 26 is combined with the second flat terminal 41, and the third plate 27 is combined with the grounding piece 5. That is, the grounding piece 5 is combined in the base 21 and the tongue plate 22. Thus, by adopting the processing method of forming three plates of the first plate 25, the second plate 26 and the third plate 27, it has the effects of simple mold development and stable production and processing. In addition, the tongue plate 22 extends from one side of the base 21. The tongue plate 22 is located at the front side inside the accommodation groove 112 of the shielding shell 11, and the base 21 is located at the rear side inside the accommodation groove 112 of the shielding shell 11. And the tongue plate 22 has two opposite planes, one side is the first surface 221 and the other side is the second surface 222. And the first surface 221 and the second surface 222 are connected by the front side surface 223 at one end close to the insertion frame opening 113. In other words, the front side surface 223 is close to the insertion frame opening 113 and is respectively vertically connected to the first surface 221 and the second surface 222. In this embodiment, the insulating body 2 is composed of a three-piece structure of the first plate 25, the second plate 26 and the third plate 27, but not limited thereto. In some implementation manners, the insulating body 2 may be composed of only two plates combined together.

[0147] Refer to Figure 7 , Figure 8 , Figure 9 and Table 1 (Table 1 is the terminal pin position definition diagram of the first embodiment of the present invention, as follows:) , The first flat terminal 31 respectively includes a first flat signal terminal 311, at least one first flat power terminal 312 and at least one first flat ground terminal 313. The first flat signal terminal 311 includes a pair of first flat high-speed signal terminals 3111 / 3113 and a pair of first flat low-speed signal terminals 3112. Viewed from the front of the first flat terminal 31, the terminal arrangement from left to right is in sequence: the first flat ground terminal 313 (Gnd), the first pair of first flat high-speed signal terminals 3111 (TX1+-, differential signal terminals for transmitting high-speed signals), the first flat power terminal 312 (Power / VBUS), the first function detection terminal 3141 (CC1 for detecting the function of plugging in forward or backward and identifying the function of the CABLE), a pair of first flat low-speed signal terminals 3112 (D+-, differential signal terminals for transmitting low-speed signals), the first expansion terminal 3142 (SBU1 which can be defined for other uses), the first flat power terminal 312 (Power / VBUS), the second pair of first flat high-speed signal terminals 3113 (RX2+-, differential signal terminals for transmitting high-speed signals), and the first flat ground terminal 313 (Gnd). Here, in order to form twelve first flat terminals 31 to conform to the transmission of USB3.0 signals. Each pair of first flat high-speed signal terminals 3111 / 3113 are respectively located between at least one adjacent first flat power terminal 312 and at least one first flat ground terminal 313. And a pair of first flat low-speed signal terminals 3112 are located between the first function detection terminal 3141 and the first expansion terminal 3142.

[0148] In addition, in some embodiments, the first flat ground terminal 313 (Gnd) on the leftmost side or the first flat ground terminal 313 (Gnd) on the rightmost side can be omitted, or further the first expansion terminal 3142 (SBU1 which can be defined for other uses) etc. can be omitted, so that it can be further reduced from twelve to seven to achieve the effect of simplifying the number of terminals. In addition, the above-mentioned first flat ground terminal 313 (Gnd) can also be replaced by the first flat power terminal 312 (Power / VBUS). The first flat power terminal 312 (Power / VBUS) is used for transmitting power. Here, the width of the first flat power terminal 312 (Power / VBUS) can be equal to the width of the first flat signal terminal 311, but not limited thereto. In some embodiments, the width of the first flat power terminal 312 (Power / VBUS) can also be greater than the width of the first flat signal terminal 311, so it can be used in electronic products that require the transmission of large current.

[0149] Refer to Figure 2 、 Figure 7 and Figure 9, the first flat terminal 31 is located above the base 21 and the tongue plate 22. The first flat terminal 31 forms the upper row of terminals relative to the second flat terminal 41. Each first flat terminal 31 includes a first contact section 315, a first connection section 317, and a first welding section 316. The first connection section 317 is disposed on the base 21 and the tongue plate 22. The first contact section 315 extends from one side of the first connection section 317 and is located on the first surface 221 of the tongue plate 22. The first welding section 316 extends from the other side of the first connection section 317 and penetrates outside the base 21. Each first welding section is disposed corresponding to the position of the hollow area 16. The first flat signal terminal 311 is located on the tongue plate 22 and transmits a group of first signals (i.e., USB3.0 signals). The first welding section 316 penetrates the bottom surface of the base 21. Moreover, the first welding section 316 is bent into a horizontal shape and is used in the form of a horizontal pin (SMT pin).

[0150] Refer to Figure 7 , Figure 8 , Figure 9 and Table 1, the second flat terminal 41 respectively includes a second flat signal terminal 411, a second flat power terminal 412, and a second flat ground terminal 413. The second flat signal terminal 411 includes a pair of second flat high-speed signal terminals 4111 / 4113 and a pair of second flat low-speed signal terminals 4112. Viewed from the front of the second flat terminal 41, the terminal arrangement from right to left is in sequence the second flat ground terminal 413 (Gnd), the first pair of second flat high-speed signal terminals 4111 (TX2+-, differential signal terminals, used to transmit high-speed signals), the second flat power terminal 412 (Power / VBUS), the second function detection terminal 4141 (CC2, used to detect the function of forward and reverse insertion and identify the function of the CABLE), a pair of second flat low-speed signal terminals 4112 (D+-, differential signal terminals, used to transmit low-speed signals), the second expansion terminal 4142 (SBU2, which can be defined for other uses), the second flat power terminal 412 (Power / VBUS), the second pair of second flat high-speed signal terminals 4113 (RX1+-, differential signal terminals, used to transmit high-speed signals), and the second flat ground terminal 413 (Gnd). Here, in order to form twelve second flat terminals 41 to conform to the transmission of USB3.0 signals. Each pair of second flat high-speed signal terminals 4111 / 4113 are respectively located between at least one second flat power terminal 412 and at least one second flat ground terminal 413 adjacent thereto. A pair of second flat low-speed signal terminals 4112 are located between the second function detection terminal 4141 and the second expansion terminal 4142.

[0151] In addition, in some embodiments, the leftmost second flat ground terminal 413 (Gnd) or the rightmost second flat ground terminal 413 (Gnd) can be omitted, or the second expansion terminal 4142 (SBU2, which can be defined for other uses) can be further omitted, etc. It can be further reduced from twelve to seven to achieve the effect of simplifying the number of terminals. In addition, the above-mentioned second flat ground terminal 413 (Gnd) can also be replaced with a second flat power terminal 412 (Power). The second flat power terminal 412 is used to transmit power. Here, the width of the second flat power terminal 412 (Power) can be equal to the width of the second flat signal terminal 411, but not limited thereto. In some embodiments, the width of the second flat power terminal 412 can also be greater than the width of the second flat signal terminal 411. Therefore, it can be used in electronic products that require large current transmission.

[0152] Refer to Figure 2 , Figure 7 and Figure 9 , the second flat terminal 41 is located below the base 21 and the tongue plate 22. The second flat terminal 41 forms a lower row of terminals relative to the first flat terminal 31. The first flat terminal 31 is disposed around the second flat terminal 41. Each second flat terminal 41 includes a second contact section 415, a second connection section 417, and a second welding section 416. The second connection section 417 is disposed on the base 21 and the tongue plate 22. The second contact section 415 extends from one side of the second connection section 417 and is located on the second surface 222 of the tongue plate 22. The second welding section 416 extends from the other side of the second connection section 417 and penetrates out of the base 21. The second flat signal terminal 411 is located on the tongue plate 22 and transmits a set of second signals (i.e., USB3.0 signals). The second welding section 416 penetrates out of the bottom surface of the base 21. Moreover, the second welding section 416 is bent into a vertical shape to be used in the form of a vertical pin (DIP pin).

[0153] Refer to Figure 1 , Figure 7 and Figure 8 , in this embodiment, from the arrangement of the first flat terminal 31 and the second flat terminal 41, it can be seen that the first flat terminal 31 is disposed on the first surface 221 of the tongue plate 22, and the second flat terminal 41 is disposed on the second surface 222 of the tongue plate 22. Each pair of second flat high-speed signal terminals 4111 / 4113 is adjacent to each pair of first flat high-speed signal terminals 3111 / 3113 and maintains a consistent spacing distance to avoid signal interference between each pair of second flat high-speed signal terminals 4111 / 4113 and each pair of first flat high-speed signal terminals 3111 / 3113.

[0154] Refer to Figure 1 , Figure 7 and Figure 8, the first flat terminal 31 and the second flat terminal 41 are point-symmetrical to each other with the center point of the receiving groove 112 as the center of symmetry. The so-called point symmetry means that when the first flat terminal 31 and the second flat terminal 41 are rotated 180 degrees with this center of symmetry as the rotation center, the rotated first flat terminal 31 and the second flat terminal 41 completely coincide. That is to say, the rotated first flat terminal 31 is located at the original arrangement position of the second flat terminal 41, and the rotated second flat terminal 41 is located at the original arrangement position of the first flat terminal 31. In other words, the first flat terminal 31 and the second flat terminal 41 are upside down, and the arrangement of the first contact section 315 is opposite to that of the second contact section 415 in the left-right direction. Among them, the plug electrical connector is inserted into the socket electrical connector 100 in the forward direction to transmit a set of first signals, and can also be inserted into the socket electrical connector 100 in the reverse direction to transmit a set of second signals, and the transmission specifications of a set of first signals conform to the transmission specifications of a set of second signals. It has the function of transmitting signals by inserting the plug electrical connector into the socket electrical connector 100 regardless of the forward or reverse direction.

[0155] In addition, in some embodiments, when the plug electrical connector has upper and lower rows of elastic terminals, the socket electrical connector 100 can omit the first flat terminal 31 or the second flat terminal 41. When the first flat terminal 31 is omitted, the plug electrical connector is inserted into the socket electrical connector 100 in the forward or reverse direction, and either one of the upper and lower rows of elastic terminals of the plug electrical connector can contact the first flat terminal 31. When the second flat terminal 41 is omitted, the plug electrical connector is inserted into the socket electrical connector 100 in the forward or reverse direction, and either one of the upper and lower rows of elastic terminals of the plug electrical connector can contact the second flat terminal 41. The socket electrical connector 100 has the function of being inserted into the plug electrical connector regardless of the forward or reverse direction.

[0156] Refer to Figure 2 , Figures 7 to 9 , in this embodiment, the first welding section 316 and the second welding section 416 extend out of the base 21 and are arranged separately. The arrangement method can be that the first welding section 316 and the second welding section 416 respectively form a double-row parallel array, or the second welding section 416 is separated into a double-row asymmetric array, and together with the single-row first welding section 316, it is generally used in three rows.

[0157] Refer to Figure 2 , Figures 7 to 8, in this embodiment, when viewed from the front of the first flat terminal 31 and the second flat terminal 41, the arrangement positions of the first flat terminals 31 correspond to the arrangement positions of the second flat terminals 41. That is to say, the arrangement position of the first contact section 315 is aligned with the arrangement position of the second contact section 415, but it is not limited thereto. In some embodiments, the arrangement positions of the first flat terminals 31 and the arrangement positions of the second flat terminals 41 may be further offset. That is to say, the arrangement positions of the first contact sections 315 and the arrangement positions of the second contact sections 415 are offset. When the first contact section 315 and the second contact section 415 transmit signals, with the offset arrangement position relationship, the effect of crosstalk signal interference is effectively improved. It should be particularly noted that the terminals of the plug electrical connector also need to be arranged corresponding to the positions of the first flat terminal 31 and the second flat terminal 41 of the socket electrical connector 100, so that the terminals of the plug electrical connector can correspondingly contact the first flat terminal 31 and the second flat terminal 41 to transmit power or signals.

[0158] In this embodiment, it is only an example that the first flat terminal 31 or the second flat terminal 41 can respectively conform to transmitting USB3.0 signals. In some embodiments, when used to transmit USB2.0 signals, taking the first flat terminal 31 as an example, the first flat terminal 31 can omit the first pair of first flat high-speed signal terminals 3111 (TX1+-, differential signal terminals), the second pair of first flat high-speed signal terminals 3113 (RX2+-, differential signal terminals), and only at least retain a pair of first flat low-speed signal terminals 3112 (D+-, differential signal terminals) and the first flat power terminal 312 (Power / VBUS) for use in transmitting USB2.0 signals. Taking the second flat terminal 41 as an example, the second flat terminal 41 can also omit the first pair of second flat high-speed signal terminals 4111 (TX2+-, differential signal terminals), the second pair of second flat high-speed signal terminals 4113 (RX1+-, differential signal terminals), and only at least retain a pair of second flat low-speed signal terminals 4112 (D+-, differential signal terminals) and the second flat power terminal 412 (Power / VBUS) for use in transmitting USB2.0 signals.

[0159] Refer to Figure 2 , Figure 3 , Figure 8 and Figure 9, in this embodiment, the grounding piece 5 is located on the insulating body 2. The grounding piece 5 includes a plate body 51, a hook structure 53, an extension arm 54, a buckling space 542, and a contact area 55. The plate body 51 is a flat and long plate member. The length and width of the plate body 51 are slightly in line with the length and width of the third plate 27. That is, the front end of the plate body 51 is adjacent to the front side 223 of the tongue plate 22, the rear end of the plate body 51 extends to the base 21, and the plate body 51 is located between the first contact section 315 and the second contact section 415. The shielding effect and the strength of the tongue plate 22 are improved by increasing the volume of the plate body 51. That is, when the first contact section 315 and the second contact section 415 transmit signals, the problem of crosstalk signal interference can be improved through the isolation of the grounding piece 5. At the same time, the structural strength of the tongue plate 22 itself can also be enhanced by the grounding piece 5 located on the tongue plate 22.

[0160] Please refer to Figure 2 , Figure 3 , the hook structures 53 extend outward from both sides in front of the plate body 51 respectively, and each hook structure 53 protrudes from the front side 223 and both sides of the tongue plate 22. When the plug electrical connector is inserted into the socket electrical connector 100, the buckle elastic pieces on both sides of the plug electrical connector will latch onto the hook structures 53, which can prevent the buckle elastic pieces on both sides of the plug electrical connector from rubbing against both sides of the tongue plate 22 and causing wear of the tongue plate 22. In addition, conduction and grounding functions are provided by the contact between the grounding piece 5 and the shielding housing 11.

[0161] Please refer to Figure 2 , Figure 3 and Figure 10A , each extension arm 54 is a hanging ear structure 541. The cross-section of each extension arm 54 generally presents an inverted U-shaped appearance. Each extension arm 54 extends outward from both sides at the rear of the plate body 51 respectively. That is, after each extension arm 54 extends upward for a certain distance, it then bends horizontally outward for a certain distance, and finally, it bends downward and extends for a certain distance. Each extension arm 54 passes through to both sides of the base 21. The hanging ear structure 541 is generally a hook-shaped bending structure. That is, each extension arm 54 extends upward from both sides of the third plate 27 and then turns to both sides of the second plate 26 respectively, so that each hanging ear structure 541 is respectively arranged on the inner side, the top, and the outer side of each side wall 26a. And each buckling space 542 is respectively formed inside each extension arm 54 to accommodate each side wall 26a. By buckling the hanging ear structure 541 to the side wall 26a, the effect of being stable and not shaking is achieved. In addition, in this embodiment, the second plate 26 includes an assembly part 262. Each assembly part 262 forms a groove structure. Each assembly part 262 is respectively recessed on the inner side, the top, and the outer side of each side wall 26a. Each extension arm 54 is respectively buckled to each assembly part 262, so that each extension arm 54 is located in each assembly part 262 and is accurately positioned, increasing the effect of the stable combination of the second plate 26 and the third plate 27.

[0162] Please refer to Figure 2 、 Figure 3 and Figure 10A , each contact area 55 is formed on the surface of each extension arm 54, and each contact area 55 contacts the inner wall surface of the main body 111. In this embodiment, the grounding plate 5 includes bump points 56, and each bump point 56 is located in the contact area 55 and contacts the inner wall surface of the main body 111. That is, bump points 56 protrude on the surface of each extension arm 54 so that the bump points 56 do contact the inner wall surface of the main body 111, providing conduction between the grounding plate 5 and the shielding housing 11, improving grounding and reducing the electromagnetic interference (EMI) effect.

[0163] Please refer to Figure 10B and Figure 10C , in some embodiments, the grounding plate 5 may not include bump points 56, but the shielding housing 11 further includes contact structures 18, and each contact structure 18 is formed on the inner wall surface of the main body 111 and contacts the contact area 55. Here, each contact structure 18 is a spring piece 181 or a bump point 182. The spring piece 181 extends inward from the inner wall surface of the main body 111, and the bump point 182 protrudes inward from the inner wall surface of the main body 111, so that the spring piece 181 or the bump point 182 structure does contact the contact area 55, providing conduction between the grounding plate 5 and the shielding housing 11, improving grounding and reducing the electromagnetic interference (EMI) effect. In the above, bump points 182 protrude on the surface of each extension arm 54 so that the bump points 182 contact the inner wall surface of the main body 111, or, contact structures 18 are provided on the inner wall surface of the main body 111 so that the contact structures 18 contact the extension arms 54, providing different structural ways of contact to increase the scope of application.

[0164] Please refer to Figure 2 、 Figure 3 , in this embodiment, the grounding plate 5 includes through holes 511, and the through holes 511 are distributed and arranged on the surface of the plate body 51. When the third plate 27 is insert-molded, the plastic can overflow from each through hole 511, allowing the plastic to quickly cover the outside of the grounding plate 5 and shortening the molding processing time.

[0165] Please refer to Figure 2 、 Figure 3, in this embodiment, the grounding piece 5 further includes a latching hole 58 formed at the rear side of the plate body 51. The second plate 26 further includes a latching block 261 protruding from the surface of the second plate 26. When the second plate 26 is assembled on the lower surface of the third plate 27, the latching block 261 is correspondingly latched in the latching hole 58, making the position of the third plate 27 (the tongue plate 22) more stable and avoiding the problem of looseness of the third plate 27 (the tongue plate 22) during plug-in use.

[0166] Please refer to Figure 2 , Figure 3 and Figure 9 , in this embodiment, the grounding piece 5 further includes a shielding plate 512 which is integral with the plate body 51. The shielding plate 512 extends downward from the rear side edge of the plate body 51 and is disposed between each first welding portion 316 and each second welding portion 416. By shielding between each first welding portion 316 and each second welding portion 416 with the shielding plate 512, signal interference is prevented.

[0167] Please refer to Figure 2 , Figure 3 , Figure 8 and Figure 9 , in this embodiment, each conductive piece 6 is located on the insulating body 2. In particular, each conductive piece 6 is respectively located on the first surface 221 and the second surface 222 of the tongue plate 22. Viewed from the front of each conductive piece 6, it is generally a long sheet body with a U-shaped appearance, and each conductive piece 6 has the same structure and is symmetric with each other.

[0168] Please refer to Figure 2 , Figure 3 , Figure 7 and Figure 9 , each conductive piece 6 includes a flat plate 61, a protrusion 64, a latching arm 65 and a contact arm 62. Each flat plate 61 respectively covers both sides of the tongue plate 22, and each protrusion 64 respectively extends outward from the side edge of each flat plate 61. In particular, the number of each protrusion 64 is the same as the number of the first flat plate grounding terminal 313 and the second flat plate grounding terminal 413. In addition, each latching arm 65 respectively extends from both side edges of each flat plate 61 towards the tongue plate 22, and the latching arm 65 is adjacent to the protrusion 64, while each contact arm 62 extends from the edge of each flat plate 61 towards the inner wall surface of the body 111, and each contact arm 62 covers the top of the base 21.

[0169] Please refer to Figure 2 , Figure 3 , Figure 7 and Figure 9, herein, the insulating body 2 further includes concave holes 28 and fastening holes 29. Each concave hole 28 is respectively formed on both sides of the tongue plate 22. In particular, each concave hole 28 is respectively formed on the first plate 25 and the second plate 26. Each fastening hole 29 is respectively formed on both sides of the tongue plate 22 adjacent to each concave hole 28. Herein, each fastening hole 29 is respectively formed on the first plate 25, the second plate 26 and the third plate 27. The position of the concave hole 28 on one side of the tongue plate 22 is set corresponding to the position of the first connection section 317 of the first flat ground terminal 313. And the number of the concave holes 28 on one side of the tongue plate 22 is the same as the number of the first flat ground terminals 313. In addition, the position of the concave hole 28 on the other side of the tongue plate 22 is set corresponding to the position of the second connection section 417 of the second flat ground terminal 413. And the number of the concave holes 28 on the other side of the tongue plate 22 is the same as the number of the first flat ground terminals 313.

[0170] Please refer to Figure 2 , Figure 3 , Figure 8 and Figure 9 , in this embodiment, each protrusion 64 is respectively inserted into each concave hole 28. The protrusion 64 located on one side of the tongue plate 22 contacts the first connection section 317 of the first flat ground terminal 313, and the protrusion 64 located on the other side of the tongue plate 22 contacts the second connection section 417 of the second flat ground terminal 413, providing the conduction function for each conductive sheet 6 to contact the first flat ground terminal 313 and the second flat ground terminal 413 respectively. Each fastening arm 65 is inserted into each fastening hole 29. The fastening arms 65 located on both sides of the tongue plate 22 contact the plate body 51 of the ground sheet 5, providing the conduction function for each conductive sheet 6 to contact the ground sheet 5. And each contact arm 62 contacts the inner wall surface of the body 111, providing the conduction function for each conductive sheet 6 to contact the shielding housing 11.

[0171] When the plug electrical connector is inserted into the socket electrical connector 100, the front end of the shielding housing of the plug electrical connector will contact the conductive sheet 6, connecting the shielding housing of the plug electrical connector to the shielding housing 11 of the socket electrical connector 100. Through the effective conduction of the conductive sheet 6, the grounding is improved and the electromagnetic interference (EMI) effect can be reduced.

[0172] Please refer to Figure 11 , Figure 12 , Figure 13 and Figure 14, which is the second embodiment of the socket electrical connector 100. The biggest difference between this embodiment and the first embodiment is that in this embodiment, the cover plate 15 and the outer shell 122 are integrated, while in the first embodiment, the cover plate 15 and the outer shell 122 are separate components. Here, the cover plate 15 extends downward from one side of the outer shell 122. The cover plate 15 covers the rear opening of the annular wall 14. And the cover plate 15 includes an opening area 152. The opening area 152 is recessed from the bottom of the cover plate 15 to expose the hollow area 16. In other words, pins 151 extend from both sides of the bottom of the cover plate 15. The two pins 151 and the central position of the bottom of the cover plate 15 jointly define the opening area 152. And the opening area 152 is equal to the hollow area 16. The design of the opening area 152 can facilitate the inspection of each first welding section 316 of the first flat terminal 31.

[0173] In this embodiment, each ground contact 92 of the circuit board 9 is a welding pad 922. Each pin 151 abuts against the surface of the welding pad 922 to contact the welding pad 922. In particular, each terminal contact 91 of the circuit board 9 is an elongated welding pad 911. The elongated welding pad 911 is exposed outside the opening area 152, which is convenient for inspecting the welding condition between each first welding section 316 and each terminal contact 91, ensuring whether each first welding section 316 and each terminal contact 91 are actually in contact, and whether the solders on each first welding section 316 are separated from each other to avoid short circuit.

[0174] By increasing the volume of the grounding piece to improve the shielding effect and the strength of the tongue plate, and through the contact between the extension arm of the grounding piece and the inner wall surface of the body, grounding is provided and the electromagnetic interference (EMI) effect can be reduced. And through the contact between each contact arm of the conductive piece and the inner wall surface of the body, when the plug electrical connector is inserted into the socket electrical connector, the front end of the shielding housing of the plug electrical connector will contact the conductive piece, connecting the shielding housing of the plug electrical connector and the shielding outer shell of the socket electrical connector. Through the effective conduction of the conductive piece, the grounding and the electromagnetic interference (EMI) reduction effect can be improved.

[0175] In addition, by arranging the cover plate on one side of the shielding outer shell, a hollow area is formed at the position of the cover plate, and the welding condition between the first flat terminal and the circuit board is inspected through the hollow area.

[0176] Furthermore, through the structure of the protrusion, the buckling arm and the contact arm of the conductive piece, the protrusion contacts the first flat grounding terminal, the buckling arm contacts the grounding piece, and the contact arm contacts the inner wall surface of the body; enabling the conductive piece, the grounding piece and the shielding outer shell to be electrically connected to each other, providing grounding and the electromagnetic interference (EMI) reduction effect.

[0177] In addition, the first flat terminal and the second flat terminal of the socket electrical connector are arranged upside down, and the arrangement of the first contact segments of the first flat terminal is opposite to that of the second contact segments of the second flat terminal. When the plug electrical connector is inserted into the socket electrical connector in the forward direction, the terminals of the plug electrical connector can be connected to the first contact segments, and when the plug electrical connector is inserted into the socket electrical connector in the reverse direction, the terminals of the plug electrical connector can also be connected to the second contact segments. The socket electrical connector has the function of not restricting the forward or reverse insertion of the plug electrical connector.

Claims

1. A socket electrical connector, characterized in that: comprising a shielding housing including a body and a receiving groove formed inside the body; an insulating body disposed in the receiving groove of the shielding housing, the insulating body including a base and a tongue plate extending from one side of the base, the insulating body including a first plate and a second plate, the first plate being disposed on the upper surface of the second plate, the first plate and the second plate being combined to jointly define the base and the tongue plate, the second plate including two side walls, each side wall protruding upward in the same direction from both sides of the second plate, and an installation space being formed between the two side walls to provide installation for the first plate; a first flat terminal disposed on the insulating body; a second flat terminal disposed on the insulating body; and a grounding piece located on the insulating body, the grounding piece including a plate body, extending arms, a buckling space and a contact area, the front end of the plate body being adjacent to the front side surface of the tongue plate, the rear end of the plate body extending to the base, the plate body being located between the first flat terminal and the second flat terminal, each extending arm being bent from both sides of the plate body into a hanging ear structure, the cross section of each extending arm generally presenting a U-shaped appearance, each hanging ear structure being respectively disposed on the inner side, the top and the outer side of each side wall, each buckling space being respectively formed in each extending arm to accommodate each side wall, each contact area being formed on the outer surface of each extending arm to contact the inner wall surface of the body, wherein the second plate includes an assembling portion, each assembling portion forming a groove structure, each assembling portion being respectively recessed on the inner side, the top and the outer side of each side wall, each extending arm being respectively buckled to each assembling portion so that each extending arm is located in each assembling portion and is firmly positioned.

2. The socket electrical connector according to claim 1, characterized in that: further comprising conductive sheets, each conductive sheet being located on the insulating body, each conductive sheet including a flat plate and a contact arm, each flat plate respectively covering both sides of the tongue plate, and each contact arm extending from the edge of each flat plate to contact the inner wall surface of the body.

3. The socket electrical connector according to claim 1, characterized in that: the grounding piece includes protruding points, each protruding point being located in the contact area to contact the inner wall surface of the body.

4. The socket electrical connector according to claim 1, characterized in that: the shielding housing includes contact structures, each contact structure being formed on the inner wall surface of the body to contact the contact area.

5. The socket electrical connector according to claim 1, characterized in that: the grounding piece includes through holes formed in the plate body.

6. The socket electrical connector according to claim 1, characterized in that: The insulating body further includes a third plate, the third plate is disposed between the first plate and the second plate, the third plate forms the tongue plate, and the first plate, the second plate and the third plate are combined to jointly define the base and the tongue plate, and the grounding piece is disposed on the third plate.

7. The socket electrical connector according to claim 6, wherein: the grounding piece includes a latching hole formed in the plate body, and the second plate includes a latching block latched in the latching hole.

8. The socket electrical connector according to claim 1, wherein: the grounding piece includes a shielding plate extending from the edge of the plate body and disposed between the first flat terminal and the second flat terminal.

9. The socket electrical connector according to claim 1, wherein: the grounding piece includes a hook structure that extends outward from both sides in front of the plate body and protrudes from both sides of the tongue plate.

10. The socket electrical connector according to claim 1, wherein: the shielding housing includes a cover plate covering one side of the body, and the cover plate includes pins, and each of the pins extends from the bottom of the cover plate.

11. The socket electrical connector according to claim 10, wherein: the shielding housing includes a hollowed-out area formed on one side of the body. When the cover plate is in the open position, the hollowed-out area is exposed. When the cover plate is in the closed position, the cover plate is inserted from the top of one side of the body into the bottom of one side of the body.

12. The socket electrical connector according to claim 11, wherein: the body includes an annular wall, and the receiving groove is formed inside the annular wall to dispose the insulating body.

13. The socket electrical connector according to claim 12, wherein: the cover plate extends from one side of the housing to cover the opening of the annular wall, and the cover plate includes an opening area recessed from the bottom of the cover plate.

14. The socket electrical connector according to claim 12, wherein: the shielding housing includes snap pieces, and each of the snap pieces extends relatively from both sides at the rear end of the annular wall, and both sides of the cover plate are respectively latched to each of the snap pieces to cover the hollowed-out area.

15. The socket electrical connector according to claim 12, wherein: the body includes a housing covering the annular wall.

16. The socket electrical connector according to claim 15, wherein: the shielding housing includes snap pieces, and each of the snap pieces extends relatively from both sides at the rear end of the housing, and both sides of the cover plate are respectively latched to each of the snap pieces to cover the hollowed-out area.

17. The socket electrical connector according to claim 11, wherein: it further includes a circuit board, the circuit board includes terminal contacts and grounding contacts, each of the terminal contacts is disposed corresponding to the position of the hollowed-out area and solders the first flat terminal, and each of the pins of the cover plate connects to each of the grounding contacts.

18. The socket electrical connector according to claim 17, wherein: The grounding contact is a connecting hole, and each of the pins is inserted into the connecting hole to contact the inner wall surface of the connecting hole.

19. The socket electrical connector according to claim 17, wherein: The terminal contact is an elongated welding pad, and the first flat terminal contacts each of the elongated welding pads.

20. The socket electrical connector according to claim 1, wherein: The insulating body further includes concave holes and fastening holes. Each of the concave holes is respectively formed on two sides of the tongue plate, and each of the fastening holes is respectively formed on two sides of the tongue plate and adjacent to each of the concave holes; and The socket electrical connector further includes conductive sheets. Each of the conductive sheets is located in the insulating body. Each of the conductive sheets includes a flat plate, a protrusion, a fastening arm, and a contact arm. Each of the flat plates respectively covers two sides of the tongue plate. Each of the protrusions respectively extends outward from the side edge of each of the flat plates into each of the concave holes. The protrusion located on one side of the tongue plate contacts the first flat terminal, and the protrusion located on the other side of the tongue plate contacts the second flat terminal. Each of the fastening arms respectively extends outward from the side edge of each of the flat plates into each of the fastening holes. Each of the fastening arms contacts the plate body of the grounding sheet, and each of the contact arms extends from the edge of each of the flat plates to contact the inner wall surface of the body.

21. The socket electrical connector according to claim 20, wherein: The grounding sheet includes a through hole formed in the plate body.

22. The socket electrical connector according to claim 20, wherein: The insulating body further includes a third plate. The third plate is disposed between the first plate and the second plate. The third plate forms the tongue plate. The first plate, the second plate, and the third plate are combined to jointly define the base and the tongue plate. The grounding sheet is disposed on the third plate. Each of the concave holes is respectively formed in the first plate and the second plate. Each of the fastening holes is respectively formed in the first plate, the second plate, and the third plate.

23. The socket electrical connector according to claim 22, wherein: The grounding sheet includes a locking hole formed in the plate body. The second plate includes a locking block locked in the locking hole.

24. The socket electrical connector according to claim 20, wherein: The grounding sheet includes a shielding plate that extends from the edge of the plate body and is disposed between the first flat terminal and the second flat terminal.

25. The socket electrical connector according to claim 20, wherein: The grounding sheet includes a hook structure that extends outward from both sides in front of the plate body and protrudes from both sides of the tongue plate.

26. The socket electrical connector according to claim 20, wherein: The shielding housing includes a cover plate that covers one side of the body. The cover plate includes pins that respectively extend from the bottom of the cover plate.

27. The socket electrical connector according to claim 26, wherein: The shielding housing includes a hollow area formed on one side of the body. When the cover plate is in the open position, the hollow area is exposed. When the cover plate is in the closed position, the cover plate is inserted from the top of one side of the body to the bottom of one side of the body.

28. The socket electrical connector according to claim 27, wherein: The body includes an annular wall, and the accommodating groove is formed inside the annular wall to dispose the insulating body.

29. The socket electrical connector according to claim 28, wherein: The cover plate extends from one side of the housing to cover the opening of the annular wall. The cover plate includes an opening area that is recessed from the bottom of the cover plate.

30. The socket electrical connector according to claim 28, wherein: The shielding housing includes snap pieces. Each of the snap pieces extends relatively from both sides of the rear end of the annular wall. Both sides of the cover plate are respectively snapped onto each of the snap pieces to cover the hollow area.

31. The socket electrical connector according to claim 28, wherein: The body includes a housing that covers the annular wall.

32. The socket electrical connector according to claim 31, wherein: The shielding housing includes snap pieces. Each of the snap pieces extends relatively from both sides of the rear end of the housing. Both sides of the cover plate are respectively snapped onto each of the snap pieces to cover the hollow area.

33. The socket electrical connector according to claim 27, wherein: It further includes a circuit board. The circuit board includes terminal contacts and ground contacts. Each of the terminal contacts is disposed corresponding to the position of the hollow area and solders a first flat terminal. Each of the pins of the cover plate is connected to each of the ground contacts.

34. The socket electrical connector according to claim 33, wherein: The ground contact is a connecting hole. Each of the pins is inserted into the connecting hole to contact the inner wall surface of the connecting hole.

35. The socket electrical connector according to claim 33, wherein: The terminal contact is an elongated welding pad, and the first flat terminal contacts each of the elongated welding pads.

36. The socket electrical connector according to any one of claims 1 or 20, wherein: The first flat terminal is located on one side of the tongue plate to transmit a set of first signals. The second flat terminal is located on the other side of the tongue plate to transmit a set of second signals. The transmission specification of the set of first signals conforms to the transmission specification of the set of second signals. The first flat terminal and the second flat terminal are point-symmetrical to each other with the center point of the accommodating groove as a center of symmetry.

37. The socket electrical connector according to claim 36, wherein: The arrangement position of the first flat terminal corresponds to the arrangement position of the second flat terminal.

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