CN205452597U - Socket connector and connector combination - Google Patents

Abstract

The utility model discloses a socket connector and a connector combination. The socket connector is used to connect with a plug connector. The socket connector includes an insulating body, the front end of the insulating body has a tongue plate, and the tongue plate has a first surface oppositely arranged and the second surface, the metal parts are arranged between the first surface and the second surface, the first terminal group is arranged on the first surface, the second terminal group is arranged on the second surface, and the second terminal group is only controlled by a third power supply terminal and a fourth power terminal, the third power terminal and the fourth power terminal are respectively aligned with the first power terminal and the second power terminal in the thickness direction of the tongue plate, so that the receptacle connector and the plug connector can be plugged in front and back , reduce the number of the second terminal group, effectively reduce the manufacturing cost, make the assembly of the socket connector easy, facilitate mass production, avoid the damage of the first power terminal and the second power terminal due to excessive current, and the metal parts strengthen the tongue plate Strength of.

Description

Receptacle Connectors and Connector Combinations

technical field

The utility model relates to a socket connector and a connector combination, in particular to an IO socket connector and a connector combination.

Background technique

An existing receptacle connector includes an insulating body, the insulating body has a tongue plate, and two rows of conductive terminals are respectively arranged on the upper and lower surfaces of the tongue plate, each row of conductive terminals has twelve, Each row of conductive terminals is first fixed with an insulating block to form a terminal module, and then two terminal modules are assembled or injection-molded to form the insulating body, and the two rows of conductive terminals are respectively located on the upper and lower sides of the tongue plate The surface is in contact with two rows of butt terminals in a plug connector, and the conductive terminals in the upper row and the conductive terminals in the lower row have the same signal transmission specification.

However, due to the large number of conductive terminals in each row, the socket connector is provided with two rows of conductive terminals up and down, thereby increasing the manufacturing cost of the socket connector, and the assembly process of the two rows of conductive terminals Complicated, not easy to mass-produce, and the tongue plate is not provided with any reinforcement structure, so that the strength of the tongue plate is weak, and signal interference is likely to occur between the two rows of conductive terminals, which affects the socket connector. high frequency performance.

Therefore, it is necessary to design an improved socket connector and connector combination to overcome the above problems.

Contents of the invention

Aiming at the problems faced by the background technology, the purpose of the utility model is to provide a socket connector and a connector assembly which are cost-saving and easy to assemble.

In order to achieve the above object, the utility model adopts the following technical means:

A receptacle connector is used to connect with a plug connector, the plug connector includes two rows of butt terminals, the two rows of butt terminals are arranged symmetrically in points, and it is characterized in that it includes an insulating body, and the insulating body The front end has a tongue plate, and the tongue plate has a first surface and a second surface opposite to each other; a metal piece is arranged between the first surface and the second surface; a first terminal group is arranged On the first surface, the first terminal group includes a first ground terminal, a first power terminal, two first signal terminals, a second power terminal and a second ground terminal; On the second surface, the second terminal group is only composed of a third power supply terminal and a fourth power supply terminal, the third power supply terminal and the fourth power supply terminal are spaced apart from the first The power terminal and the second power terminal are aligned in the thickness direction of the tongue plate.

Further, the metal piece is embedded in the tongue plate, and the board surfaces of the first power terminal and the second power terminal are parallel to the board surfaces of the third power terminal and the fourth power terminal, so that The first power terminal, the second power terminal, the third power terminal, and the fourth power terminal are arranged symmetrically with respect to the center line of the metal piece.

Further, the first terminal group also includes a detection terminal and a reserved terminal, the detection terminal is located between the first power supply terminal and the two first signal terminals, and the reserved terminal is located between the two first signal terminals Between the second power supply terminal and the two first signal terminals.

Further, the first terminal group further includes two first differential signal terminals and two second differential signal terminals, the two first differential signal terminals are located between the first ground terminal and the first power supply terminal, so The two second differential signal terminals are located between the second ground terminal and the second power supply terminal.

Further, the first signal terminal is used to transmit USB2.0 signals, and the two first differential signal terminals and the two second differential signal terminals are used to transmit USB3.0 signals.

Further, the front end of each terminal in the first terminal group has a flat contact portion exposed on the first surface, offset from one side of the contact portion to form an offset portion, and from the offset portion Extending a connecting portion backward, bending and extending a welding portion backward from the connecting portion, the width of the contact portion of the first ground terminal is smaller than the width of the connecting portion, and the width of the first differential signal terminal The width of the contact portion is greater than the width of the connecting portion thereof, and the width of the contact portion of the first ground terminal is greater than the width of the contact portion of the first differential signal terminal.

Further, the insulating body includes a base, a stepped portion extends forward from the base, the thickness of the stepped portion is smaller than the thickness of the base, and the tongue plate is formed by extending forward from the stepped portion, the The thickness of the tongue plate is smaller than the thickness of the step part, the offset part is located on the first surface, the connecting part is accommodated in the step part and the base part, and the welding part protrudes from the bottom surface of the base part and parallel to the bottom surface of the base.

Further, the first terminal group is integrally injection-molded with the metal part and the insulating body, and the third power terminal and the fourth power terminal are assembled to the insulating body.

Further, the first terminal group is integrally injection molded with the metal part and the insulating body, the third power terminal and the fourth power terminal are integrally injection molded with an insulating seat, and the insulating seat is integrated with the insulating seat The insulating body is integrally formed by injection molding.

Further, the metal piece has a plate body, the plate body is provided with a plurality of openings, the front edge of the plate body is provided with a gap backward, and the two ends of the rear side of the plate body are respectively provided with a protruding A through hole is formed through the board surface of the protruding part, and a grounding leg extends from the end of the protruding part, and the grounding leg is welded vertically to a circuit board.

Further, a depression is recessed on both sides of the tongue plate, a buckling part is recessed on both sides of the metal part and located in the depression, and the buckling part is matched with the plug connector and fixed.

Further, a metal shell covers the outer periphery of the insulating body, the metal shell has a docking cavity for accommodating the tongue plate, and one end of the metal shell is bent and extends in a direction away from the docking cavity. The bending piece bends and extends at least one holding foot from the end of the bending piece, and the holding foot is inserted into a circuit board and fixed by welding.

Further, a connector combination is characterized in that it includes a plug connector, the plug connector includes a plastic body, the plastic body has a receiving cavity, the plug connector includes an upper row of butt terminal groups and a lower row A row of butt terminal groups, and the upper row of butt terminal groups and the lower row of butt terminal groups are arranged point-symmetrically with the center of the receiving cavity; a socket connector can be plugged with the plug connector forward and backward, and the socket is connected The device includes an insulating body, the front end of the insulating body has a tongue plate, and the tongue plate has a first surface and a second surface opposite to each other; a metal part is arranged on the first surface and the second surface Between; a first terminal group is arranged on the first surface to connect with the upper butt terminal group or the lower butt terminal group, and the first terminal group includes a first ground terminal, A first power terminal, two first signal terminals, a second power terminal, and a second ground terminal; a second terminal group is set on the second surface, and the second terminal group consists of only a third power terminal Composed of a fourth power terminal, and connected to the power terminals in the lower row of docking terminal groups or the upper row of docking terminal groups, the third power supply terminal and the fourth power supply terminal are respectively connected to the first A power terminal and the second power terminal are aligned in the thickness direction of the tongue plate.

Further, the metal piece is embedded in the tongue plate, and the board surfaces of the first power terminal and the second power terminal are parallel to the board surfaces of the third power terminal and the fourth power terminal, so that The first power terminal, the second power terminal, the third power terminal, and the fourth power terminal are arranged symmetrically with respect to the center line of the metal piece.

Further, the first terminal group has twelve terminals, which are respectively arranged in order on the first surface as follows: the first ground terminal, two first differential signal terminals, the first power supply terminal, a detection terminal, the two first signal terminals, a reserved terminal, the second power supply terminal, two second differential signal terminals and the second ground terminal.

Further, the two first signal terminals are used to transmit USB2.0 signals, and the two first differential signal terminals and the two second differential signal terminals are used to transmit USB3.0 signals.

Further, the first terminal, the metal part and the insulating body are integrally molded by injection molding, and the third power terminal and the fourth power terminal are assembled to the insulating body.

Further, the first terminal group and the metal parts are integrally injection-molded with the insulating body, the third power terminal and the fourth power terminal are integrally injection-molded with an insulating seat, and the insulating seat is integrated with the insulating seat The insulating body is integrally formed by injection molding.

Further, the metal piece has a plate body, the plate body is provided with a plurality of openings, the front edge of the plate body is provided with a gap backward, and the two ends of the rear side of the plate body are respectively provided with a protruding A through hole is formed through the board surface of the protruding part, and a grounding leg extends from the end of the protruding part, and the grounding leg is welded vertically to a circuit board.

Further, the plug connector also includes a shielding sheet, the shielding sheet is located between the upper row of butt terminal groups and the lower row of butt terminal groups. The arm enters the accommodating cavity, and a buckling part is respectively recessed on both sides of the metal part, and the buckling part protrudes from the side edge of the tongue plate to snap fit with the elastic arm.

Compared with the prior art, the utility model has the following beneficial effects: the metal part is arranged between the first surface and the second surface, and the second terminal group is only composed of the third power supply terminal and The fourth power supply terminal is formed, thereby reducing the number of the second terminal group, effectively reducing the manufacturing cost of the socket connector, and making the assembly of the socket connector easy, which is conducive to mass production. The three power terminals and the fourth power terminal are arranged at intervals and are respectively aligned with the first power terminal and the second power terminal in the thickness direction of the tongue plate, so that the socket connector and the plug connector can be positively aligned. Reverse plugging, and adding the third power terminal and the fourth power terminal to share the current, avoiding the damage of the first power terminal and the second power terminal due to excessive current, and the metal parts are set In the tongue plate, the strength of the tongue plate is strengthened, and the metal part can shield the interference signal between the first terminal group and the second terminal group, ensuring the high frequency of the socket connector performance.

【Description of drawings】

Figure 1 is a three-dimensional exploded view of the socket connector of the present invention;

Figure 2 is a partial assembly diagram of the socket connector of the present invention;

Fig. 3 is a partial assembly diagram of another perspective of the socket connector of the present invention;

Fig. 4 is a partial sectional view of the socket connector of the present invention;

Fig. 5 is a top view of the first terminal group of the socket connector of the present invention;

Fig. 6 is a three-dimensional exploded view of the plug connector of the present invention.

Description of the accompanying drawings for specific embodiments:

【detailed description】

In order to facilitate a better understanding of the purpose, structure, features, and effects of the utility model, the utility model will be further described in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1 and Figure 2, the socket connector 100 of the present invention is used to connect with a plug connector 200, and includes an insulating body 1, the front end of the insulating body 1 has a tongue plate 13, and the tongue plate 13 It has a first surface 131 and a second surface 132 opposite to each other, a metal piece 4 is arranged between the first surface 131 and the second surface 132, and a first terminal group 2 is arranged on the first surface 131 and the second surface 132. A surface 131, a second terminal group 3 is arranged on the second surface 132, a metal shell 5 is wrapped around the outer periphery of the insulating body 1 to shield external electromagnetic interference, and the socket connector 100 is used for Solder to a circuit board (not shown).

As shown in Fig. 1 and Fig. 2, the insulating body 1 includes a base 11, and a clamping block 111 protrudes from the two side walls of the base 11 respectively, and the clamping block 111 cooperates with the metal shell 5 and is fixed. . A step portion 12 extends forward from the base portion 11, the thickness of the step portion 12 is smaller than the thickness of the base portion 11, and the tongue plate 13 is formed forwardly from the step portion 12, the tongue plate 13 The thickness is smaller than the thickness of the step portion 12 , the tongue plate 13 has a first surface 131 and a second surface 132 oppositely arranged, and the first surface 131 and the second surface 132 are arranged in parallel. A concave portion 133 is respectively recessed from two side surfaces of the tongue plate 13 perpendicular to the first surface 131 and the second surface 132 .

As shown in FIG. 1 , FIG. 2 and FIG. 5 , the first terminal group 2 is injection molded integrally with the insulating housing 1 , and the first terminal group 2 is arranged on the first surface 131 . The first terminal group 2 includes a first ground terminal 21, a first power supply terminal 23, two first signal terminals 25, a second power supply terminal 28 and a second ground terminal 29. The first terminal group 2 It also includes a detection terminal 24 and a reserved terminal 26, the detection terminal 24 is located between the first power supply terminal 23 and the two first signal terminals 25, and the reserved terminal 26 is located at the second Between the two power terminals 28 and the two first signal terminals 25 . The first terminal group 2 also includes two first differential signal terminals 22 and two second differential signal terminals 27, the two first differential signal terminals 22 are located between the first ground terminal 21 and the first power supply terminal 23 Between, the two second differential signal terminals 27 are located between the second ground terminal 29 and the second power supply terminal 28 . The two first signal terminals 25 are used to transmit USB2.0 signals, and the two first differential signal terminals 22 and the two second differential signal terminals 27 are used to transmit USB3.0 signals. In this embodiment, the receptacle connector 100 is provided with the two first differential signal terminals 22 and the two second differential signal terminals 27, that is, the first terminal group 2 has twelve terminals, respectively The first surface 131 of the tongue plate 13 is arranged in order: the first ground terminal 21 (GND), the two first differential signal terminals 22 (TX+ and TX-), the first power supply terminal 23 (VBUS), the detection terminal 24 (CC), the first signal terminal pair 25 (D+ and D-), the reserved terminal 26 (RFU), the second power supply terminal 28 (VBUS) . The two second differential signal terminals 27 (RX+ and RX-) and the second ground terminal 29 (GND), that is, the arrangement of the first terminal group 2 complies with the USB3.0 terminal specification. In another embodiment, the receptacle connector 100 is not provided with the first differential signal terminal 22 and the second differential signal terminal 27, that is, the first terminal group 2 has eight terminals, respectively in the The first surface 131 of the tongue plate 13 is arranged in order: the first ground terminal 21 (GND), the first power supply terminal 23 (VBUS), a detection terminal 24 (CC), the second A signal terminal 25 (D+ and D-), the reserved terminal 26 (RFU), the second power supply terminal 28 (VBUS) and the second ground terminal 29 (GND), that is, the first terminal group 2 is an arrangement conforming to the USB2.0 terminal specification, as long as the first terminal group 2 is arranged on the first surface 131 .

As shown in Figure 1, Figure 2 and Figure 5, the front end of each terminal in the first terminal group 2 has a flat contact portion A exposed on the first surface 131, from the contact portion A side The offset forms an offset portion B, and the offset portion B is located on the first surface 131 . A connection part C is extended backward from the offset part B, and a welding part D is bent and extended backward from the connection part C, and the connection part C is accommodated in the step part 12 and the base part 11, so The welding portion D protrudes from the bottom surface of the base 11 and is parallel to the bottom surface of the base 11 , and the welding portion D is used for welding to the circuit board. The first ground terminal 21 has the same shape as the first power terminal 23, and the first ground terminal 21 and the first power terminal 23 are both connected to the second ground terminal 29 and the second power terminal. 28 is arranged symmetrically with respect to the vertical central plane of the tongue plate 13 . The contact portion A of the first ground terminal 21, the first power terminal 23, the second ground terminal 29, and the second power terminal 28 is compared with the first signal terminal 25, the second The contact portion A of a differential signal terminal 22 and the second differential signal terminal 27 is closer to the front end of the tongue plate 13 . The offset portion B of the first ground terminal 21 is offset towards the first differential signal terminal 22, and the offset portion B of the first differential signal terminal 22 is connected to the first ground terminal 21. The offset directions of the offset portions B are the same. The width of the contact portion A of the first ground terminal 21 is smaller than the width of the connection portion C thereof, and the width of the contact portion A of the first differential signal terminal 22 is greater than the width of the connection portion C thereof. The width of the contact portion A of the first ground terminal 21 is larger than the width of the contact portion A of the first differential signal terminal 22, and the width of the first differential signal terminal 22 is set such that the second A differential signal terminal 22 can pass high frequency signals smoothly. The two second differential signal terminals 27 and the two first differential signal terminals 22 are arranged symmetrically with respect to the vertical center plane of the tongue plate 13, that is, the shape of the second differential signal terminal 27 is the same as that of the first differential signal terminal 22. The differential signal terminals 22 have the same shape.

As shown in Figure 1, Figure 3 and Figure 4, the second terminal group 3 is arranged on the second surface 132, and the second terminal group 3 only consists of a third power terminal 31 and a fourth power terminal 32 Composition, the third power supply terminal 31 and the fourth power supply terminal 32 are arranged at intervals and arranged parallel to the first power supply terminal 23 and the second power supply terminal 28 respectively and aligned in the thickness direction of the tongue plate 13 . The front edge surfaces of the third power terminal 31 and the fourth power terminal 32 are aligned with the front edge surfaces of the first power terminal 23 and the second power terminal 28 in the thickness direction of the tongue plate 13 , and the cross-sectional area of the third power supply terminal 31 and the fourth power supply terminal 32 is the same as the cross-sectional area of the first power supply terminal 23 and the second power supply terminal 28, and the third power supply terminal 31 The length dimension of the fourth power supply terminal 32 is the same as the length dimension of the first power supply terminal 23 and the second power supply terminal 28, that is, the third power supply terminal 31, the fourth power supply terminal 32 and the The first power terminal 23 and the second power terminal 28 have the same structure, that is, the first power terminal 23 and the second power terminal 28 are opposite to the third power terminal 31 and the fourth power terminal 32 The centerlines of the metal parts 4 are arranged symmetrically. The third power terminal 31 and the fourth power terminal 32 . The second terminal group 3 is only composed of the third power supply terminal 31 and the fourth power supply terminal 32, thereby reducing the number of the second terminal group 3 and effectively reducing the manufacturing cost of the socket connector 100. cost, and make the receptacle connector 100 easy to assemble and facilitate mass production, the third power terminal 31 and the fourth power terminal 32 are spaced apart from the first power terminal 23 and the second power terminal 32 respectively The power terminals 28 are aligned in the thickness direction of the tongue plate 13, so that the receptacle connector 100 and the plug connector 200 can be plugged in front and back, and the third power terminal 31 and the fourth power terminal 32 are added to share current, avoiding damage to the first power supply terminal 23 and the second power supply terminal 28 due to excessive current.

As shown in Fig. 1, Fig. 2 and Fig. 4, the metal part 4 is embedded in the tongue plate 13, the metal part 4 is located between the first surface 131 and the second surface 132, and the metal part 4 The component 4 has a board body 41 , and two buckling parts 411 are recessed on both sides of the board body 41 and located in the recessed part 133 , and the buckling parts 411 are matched with the plug connector 200 and fixed. The plate body 41 is provided with a plurality of openings 412 through, and the shapes and sizes of the plurality of openings 412 are different. The notch 413 is for the plastic material to flow in during the injection molding of the insulating body 1 , so that the plastic material fills the opening 412 and the notch 413 , so that the metal part 4 and the insulating body 1 are firmly fixed. A protruding portion 42 protrudes from both ends of the rear side of the plate body 41, and a through hole 421 is formed through the plate surface of the protruding portion 42, and a grounding pin 43 extends from the end of the protruding portion 42. The ground pin 43 is welded vertically to the circuit board. The metal piece 4 is arranged on the tongue plate 13 to strengthen the strength of the tongue plate 13, and the metal piece 4 can shield the interference between the first terminal group 2 and the second terminal group 3 signal to ensure the high-frequency performance of the receptacle connector 100 .

As shown in Fig. 1, Fig. 2 and Fig. 4, the metal shell 5 is wrapped around the periphery of the insulating body 1 to shield the electromagnetic interference from the outside, and the metal shell 5 has a connecting cavity 51 for accommodating the The tongue plate 13, one end of the metal shell 5 bends and extends a bending piece 53 toward the direction away from the receiving cavity 2011, and at least one holding foot 53 is bent and extending from the end of the bending piece 53, the holding The feet 53 are arranged parallel to the grounding feet 43 , and the holding feet 53 are inserted into the circuit board and fixed by welding. Two clamping holes 52 are defined on both sides of the metal shell 5 , and the clamping holes 52 cooperate with the clamping blocks 111 to fix the metal shell 5 and the insulating body 1 .

As shown in Figure 6, the plug connector 200 includes a plastic body 201, the plastic body 201 has a receiving cavity 2011, the plug connector 200 includes two rows of butt terminals, respectively the upper row of butt terminal groups 202 and The lower row of docking terminal groups 203, and the upper row of docking terminal groups 202 and the lower row of docking terminal groups 203 are arranged point-symmetrically with the center of the receiving cavity 2011, and the transmission specifications of the upper row of docking terminal groups 202 It conforms to the transmission specifications of the lower docking terminal group 203, which are GND, TX+, TX-, VBUS, CC, D+, D-, RFU, VBUS, RX-, RX+ and GND in sequence, that is, there is no limit to the plug connector 200 is forwardly or reversely inserted into the socket connector 100 for signal transmission. The plug connector 200 also includes a shielding sheet 204, the shielding sheet 204 is located between the upper row of butt terminal group 202 and the lower row of butt terminal group 203, for shielding the upper row of butt terminal group 202 For noise signals between the lower row of docking terminal groups 203, two elastic arms 205 are respectively extended forward on both sides of the shielding sheet 204 to enter the receiving cavity 2011, and the buckling portion 411 protrudes from the The side edge of the tongue plate 13 is snap-fitted with the elastic arm 205 to increase the plugging force of the plug connector 200 and make the plug connector 200 and the receptacle connector 100 more stable. A shielding shell 206 covers the plastic body 201 to shield external interference signals and ensure the high frequency performance of the plug connector 200 .

As shown in Fig. 1, Fig. 2 and Fig. 4, when assembling, the first terminal group 2, the metal part 4 and the insulating body 1 are injection molded into one body, and then the third power terminal 31 and the fourth power terminal 32 are inserted into the second surface 132 of the tongue plate 13 from the base 11, so as to assemble the third power terminal 31 and the fourth power terminal 32 to the insulating body 1. Then set the metal shell 5 on the insulating body 1 so that the docking cavity 51 surrounds the tongue plate 13, the clamping hole 52 is buckled with the clamping block 111, and finally the The socket connector 100 is vertically soldered to the circuit board. In this embodiment, the third power terminal 31 and the fourth power terminal 32 are assembled to the insulating housing 1. In other embodiments, the third power terminal 31 and the fourth power terminal 32 It can also be integrated with an insulating seat (not shown) by injection molding, and then the insulating seat and the insulating body 1 are injection-molded as one, as long as the third power terminal 31 and the fourth power terminal 32 are ensured It only needs to be fixed on the second surface 132 of the tongue plate 13 .

As shown in FIG. 2 , FIG. 3 and FIG. 6 , when the receptacle connector 100 is docked with the plug connector 200 , when the plug connector 200 is inserted into the docking cavity 51 forward, the tongue plate 13 Inserted into the receiving cavity 2011, the contact portion A of the first terminal group 2 is in contact with each docking terminal of the upper row of docking terminal groups 202, and the third terminal in the second terminal group 3 The power terminal 31 and the fourth power terminal 32 are in contact with the two power terminals in the lower butt terminal group 203 to form a complete electrical connection. When the plug connector 200 is reversely inserted into the When the docking cavity 51 is described, the third power terminal 31 and the fourth power terminal 32 in the second terminal group 3 are connected to the two power terminals in the upper row of docking terminal group 202, and the The contact portion A of the first terminal group 2 is in contact with each mating terminal of the lower row of mating terminal groups 203 , so the plug connector 200 can be mated with the receptacle connector 100 front and back.

To sum up, the socket connector and the connector combination of the utility model have the following beneficial effects:

(1) The second terminal group 3 is only composed of the third power supply terminal 31 and the fourth power supply terminal 32, thereby reducing the number of the second terminal group 3 and effectively reducing the socket connector 100 manufacturing cost, and make the receptacle connector 100 easy to assemble and facilitate mass production. The second power supply terminal 28 is aligned in the thickness direction of the tongue plate 13, so that the socket connector 100 and the plug connector 200 can be plugged in front and back, and the third power supply terminal 31 and the fourth power supply terminal 31 are added. The terminals 32 share the current, which prevents the first power supply terminal 23 and the second power supply terminal 28 from being damaged due to excessive current.

(2) The metal piece 4 is arranged on the tongue plate 13, which strengthens the strength of the tongue plate 13, and the metal piece 4 can shield the connection between the first terminal group 2 and the second terminal group 3 Interfering signals between them ensure the high-frequency performance of the receptacle connector 100 .

(3) The shielding sheet 204 is located between the upper row of butt terminal groups 202 and the lower row of butt terminal groups 203 to shield the connection between the upper row of butt terminal groups 202 and the lower row of butt terminal groups 203 Noise signals between the two sides of the shielding sheet 204 are respectively extended forward and provided with two elastic arms 205 to enter the receiving cavity 2011, and the buckling part 411 protrudes from the side edge of the tongue plate 13 to be in line with the The elastic arm 205 is snap-fitted, so as to increase the plugging force of the plug connector 200 , so that the plug connector 200 and the socket connector 100 are inserted more stably.

(4) The offset portion B of the first ground terminal 21 is offset towards the first differential signal terminal 22, and the offset portion B of the first differential signal terminal 22 is connected to the first ground terminal 22. The offset directions of the offset portions B of the terminals 21 are the same. The width of the contact portion A of the first ground terminal 21 is smaller than the width of the connection portion C, and the width of the contact portion A of the first differential signal terminal 22 is larger than the width of the connection portion C, so The width of the contact portion A of the first ground terminal 21 is greater than the width of the contact portion A of the first differential signal terminal 22, and the width of the first differential signal terminal 22 is set such that the two first differential The signal terminal 22 can pass high-frequency signals smoothly.

(5) The plate body 41 is penetrated with a plurality of openings 412, the shapes and sizes of the plurality of openings 412 are different, and the front edge of the plate body 41 is recessed with the notch 413 backward, the The opening 412 and the notch 413 allow the plastic material to flow into the insulating body 1 during injection molding, so that the plastic material fills the opening 412 and the notch 413, so that the metal part 4 is fixed to the insulating body 1 firm.

The above detailed description is only a description of the preferred embodiment of the utility model, and does not limit the patent scope of the utility model. Therefore, all equivalent technical changes made by using the instructions and illustrations of this invention are included in the utility model. within the scope of the new patent.

Claims (20)

1. A socket connector for docking with a plug connector, the plug connector includes two rows of butt terminals, and the two rows of butt terminals are arranged symmetrically in points, and it is characterized in that it includes: An insulating body, the front end of the insulating body has a tongue plate, and the tongue plate has a first surface and a second surface oppositely arranged; a metal piece is disposed between the first surface and the second surface; A first terminal group is arranged on the first surface, and the first terminal group includes a first ground terminal, a first power terminal, two first signal terminals, a second power terminal and a second ground terminal ; A second terminal group is arranged on the second surface, the second terminal group is only composed of a third power supply terminal and a fourth power supply terminal, the third power supply terminal and the fourth power supply terminal are spaced apart and respectively aligned with the first power terminal and the second power terminal in the thickness direction of the tongue plate. 2. The receptacle connector according to claim 1, characterized in that: the metal part is embedded in the tongue plate, the board surface of the first power terminal, the second power terminal and the third power supply terminal and the fourth power terminal are parallel to each other, and the first power terminal, the second power terminal, the third power terminal, and the fourth power terminal are in a shape relative to the centerline of the metal part. Symmetrical setting. 3. The receptacle connector according to claim 1, wherein the first terminal group further comprises a detection terminal and a reserved terminal, the detection terminal is located between the first power supply terminal and the Between the two first signal terminals, the reserved terminal is located between the second power supply terminal and the two first signal terminals. 4. The receptacle connector according to claim 1, wherein the first terminal group further comprises two first differential signal terminals and two second differential signal terminals, and the two first differential signal terminals are located on the Between the first ground terminal and the first power supply terminal, the two second differential signal terminals are located between the second ground terminal and the second power supply terminal. 5. The socket connector according to claim 4, wherein the two first signal terminals are used to transmit USB2.0 signals, and the two first differential signal terminals and the two second differential signal terminals are used for To transmit USB3.0 signal. 6. The receptacle connector according to claim 4, characterized in that: the front end of each terminal in the first terminal group has a flat contact portion exposed on the first surface, from the contact portion one The side offset forms an offset portion, a connecting portion extends backward from the offset portion, and a welding portion is bent and extended backward from the connecting portion, and the width of the contact portion of the first ground terminal is smaller than its The width of the connection portion, the width of the contact portion of the first differential signal terminal is greater than the width of the connection portion, the width of the contact portion of the first ground terminal is greater than the width of the first differential signal terminal The width of the contact portion. 7. The receptacle connector according to claim 6, wherein the insulating body comprises a base, a stepped portion extends forward from the base, the thickness of the stepped portion is smaller than the thickness of the base, and since The step portion extends forward to form the tongue plate, the thickness of the tongue plate is smaller than the thickness of the step portion, the offset portion is located on the first surface, and the connecting portion is accommodated between the step portion and the step portion. In the base, the welding portion protrudes from the bottom surface of the base and is parallel to the bottom surface of the base. 8. The socket connector according to claim 1, wherein the first terminal group is injection-molded with the metal part and the insulating body, and the third power supply terminal and the fourth power supply terminal The terminals are assembled to the insulating body. 9. The socket connector according to claim 8, characterized in that: the first terminal group is injection-molded with the metal part and the insulating body, and the third power supply terminal and the fourth power supply terminal The terminal is integrally injection-molded with an insulating seat, and the insulating seat is integrally injection-molded with the insulating body. 10. The receptacle connector according to claim 1, wherein the metal part has a plate body, and a plurality of openings are formed through the plate body, and a notch is recessed on the front edge of the plate body backward. , the two ends of the rear side of the board are respectively protruded with a protruding part, the plate surface of the protruding part is provided with a through hole, and a grounding pin is extended from the end of the protruding part, and the grounding pin is welded vertically on the a circuit board. 11. The receptacle connector according to claim 1, characterized in that: two sides of the tongue plate are respectively recessed with a recessed part, and the two sides of the metal part are respectively recessed with a buckle part located in the recessed part, the The buckling part is matched and fixed with the plug connector. 12. The receptacle connector according to claim 1, characterized in that: a metal shell covers the periphery of the insulating body, the metal shell has a mating cavity for accommodating the tongue plate, the metal shell One end of the housing is bent and extended toward a direction away from the docking cavity, and at least one holding leg is bent and extended from the end of the bending sheet, and the holding leg is inserted into a circuit board and fixed by welding. 13. A connector combination, characterized in that it comprises: A plug connector, the plug connector includes a plastic body, the plastic body has a receiving cavity, the plug connector includes an upper row of butt terminal groups and a lower row of butt terminal groups, and the upper row of butt terminal groups and the lower row of butt terminal groups The rows of butt terminal groups are arranged point-symmetrically with the center of the receiving cavity; A receptacle connector, which can be plugged with the plug connector in the front and back, the receptacle connector includes an insulating body, the front end of the insulating body has a tongue plate, and the tongue plate has a first surface and a A second surface; a metal piece is arranged between the first surface and the second surface; a first terminal group is arranged on the first surface for connecting with the upper row of terminal groups or the The lower row of docking terminal groups are connected, and the first terminal group includes a first grounding terminal, a first power supply terminal, two first signal terminals, a second power supply terminal and a second grounding terminal; a second terminal group Located on the second surface, the second terminal group is only composed of a third power terminal and a fourth power terminal, and is connected to the power terminals in the lower row of docking terminal groups or the upper row of docking terminal groups Oppositely, the third power terminal and the fourth power terminal are respectively aligned with the first power terminal and the second power terminal in the thickness direction of the tongue plate. 14. The connector combination according to claim 13, wherein the metal part is embedded in the tongue plate, and the board surface of the first power terminal, the second power terminal and the third power supply terminal and the fourth power terminal are parallel to each other, and the first power terminal, the second power terminal, the third power terminal, and the fourth power terminal are in a shape relative to the centerline of the metal part. Symmetrical setting. 15. The connector assembly according to claim 13, characterized in that: the first terminal group has twelve terminals, which are respectively arranged in order on the first surface as follows: the first grounding terminal, the second A differential signal terminal, the first power supply terminal, a detection terminal, the two first signal terminals, a reserved terminal, the second power supply terminal, two second differential signal terminals and the second ground terminal. 16. The connector assembly according to claim 15, wherein the two first signal terminals are used to transmit USB2.0 signals, and the two first differential signal terminals and the two second differential signal terminals are used for To transmit USB3.0 signal. 17. The connector assembly according to claim 13, characterized in that: the first terminal, the metal part and the insulating body are integrally molded by injection molding, and the third power terminal and the fourth power terminal assembled to the insulating body. 18. The connector assembly according to claim 13, characterized in that: the first terminal group and the metal part are integrally injection-molded with the insulating body, and the third power terminal and the fourth power terminal The terminal is integrally injection-molded with an insulating seat, and the insulating seat is integrally injection-molded with the insulating body. 19. The connector assembly according to claim 13, wherein the metal part has a plate body, and a plurality of openings are formed through the plate body, and a notch is recessed backward on the front edge of the plate body , the two ends of the rear side of the board are respectively protruded with a protruding part, the plate surface of the protruding part is provided with a through hole, and a grounding pin is extended from the end of the protruding part, and the grounding pin is welded vertically on the a circuit board. 20. The connector combination according to claim 13, wherein the plug connector further comprises a shielding sheet, and the shielding sheet is located between the upper row of butt terminal groups and the lower row of butt terminal groups Two elastic arms extend forward on both sides of the shielding sheet to enter the receiving cavity, and a buckling part is recessed on both sides of the metal part, and the buckling part protrudes from the side of the tongue plate edge to snap fit with the elastic arm.