CN203415735U - Socket connector - Google Patents

Abstract

The utility model discloses a socket connector, which comprises an insulating seat body, an insulating body, a plurality of conductive terminals and a shielding shell; the insulating seat body is provided with a rear wall, the lower part of the front surface of the rear wall protrudes forwards to form a bottom wall, the left side and the right side of the rear wall are both provided with a side wall in a protruding mode forwards, and the two side walls, the rear wall and the bottom wall are enclosed to form a first accommodating groove; the insulation body is assembled in the first accommodating groove of the insulation base body and comprises a first insulation body and a second insulation body; the first insulating body is provided with a plurality of first terminal grooves and a plurality of second terminal grooves; the plurality of conductive terminals are respectively assembled in the first terminal groove and the second terminal groove; the shielding shell is fixedly arranged on the insulating base body and the insulating body, and the front part of the shielding shell is enclosed to form an inserting space. The utility model discloses the socket connector changes the equipment mode into through with conductive terminal and insulator by integrated into one piece to reduce the manufacturing cost of socket connector, improve conductive terminal's transmission performance.

Description

socket connector

technical field

The utility model relates to a connector, in particular to a socket connector.

Background technique

Referring to FIGS. 1 and 2 , a conventional receptacle connector 100 ′ includes an insulating body 10 ′, a set of lower conductive terminals 20 ′, a set of upper conductive terminals 30 ′, and a shielding shell 40 ′. The insulating body 10' has a base 11' in the shape of a rectangular plate. The left and right sides of the base 11' are connected with side walls 12', and the upper part of the front surface of the base 11' protrudes forward. A rectangular plate-shaped butt joint 13 is provided. '. Each lower conductive terminal 20' has a first mounting part 21', a first holding part 22' extending downward from the rear end edge of the first mounting part 21', and a first holding part 22' extending from the first mounting part 21'. The front end edge first bends the extended end forward and downward, and then bends upward the arched first contact portion 23 ′. Each upper conductive terminal 30' has an elongated second mounting portion 31', a second holding portion 32' bent and extended downward from the rear end edge of the second mounting portion 31', and a second holding portion 32' extending from the second mounting portion 31'. The front edge of the mounting portion 31 ′ is first bent downwards and then extended forwards to the second contact portion 33 ′. The first installation part 21' and the second installation part 31' of the lower conductive terminal 20' and the upper conductive terminal 30' are integrally formed in the base part 11' and the docking part 13' of the insulating body 10', and the first contact part 23' and the second contact portion 33 ′ protrude from the lower surface of the docking portion 13 ′, and the first holding portion 22 ′ and the second holding portion 32 ′ protrude from the rear surface of the base portion 11 ′. The ends of the first holding portion 22 ′ and the second holding portion 32 ′ are welded on a circuit board (not shown). The shielding shell 40' is wrapped around the insulating body 10', and the front portion of the shielding shell 40' and the docking portion 13' enclose an insertion space 50'.

Please refer to Figure 2, due to the shape of the insulating body 10', when integrally formed, the rear part of the first mounting part 31' of the upper conductive terminal 30' needs to be bent upwards and extended, and then bent horizontally to extend a bend. The folded portion 34', the front portion of the first mounting portion 31' and the bent portion 34' are integrally formed on the base portion 11'. Since the first mounting portion 34 ′ of the upper conductive terminal 30 ′ has a bent portion 34 ′, the first mounting portion 31 ′ needs to be bent one more time, which will affect the high frequency characteristics of the upper conductive terminal 30 ′. When the body is integrally formed, the conductive terminals 30' are manually placed, and the molding cycle is long and the cost is relatively high. In addition, the precision of the integrally formed conductive terminal 30 ′ is high, and if the precision of the conductive terminal 30 ′ is not good, it is easy to damage the integrally formed mold, which increases the cost and affects the quality of the receptacle connector 100 ′.

Therefore, there is an urgent need for a socket connector with low manufacturing cost and good transmission performance of conductive terminals.

Contents of the invention

The purpose of the utility model is to provide a socket connector with low manufacturing cost and good transmission performance of conductive terminals in view of the defects and deficiencies of the prior art.

In order to achieve the above object, the utility model provides a socket connector, which includes an insulating seat body, an insulating body, a plurality of conductive terminals and a shielding shell; the insulating seat body has a rear wall, and the lower part of the front surface of the rear wall faces The front protrudes out of a bottom wall, and the left and right sides of the rear wall protrude forward with one side wall, and the two side walls, the rear wall and the bottom wall form a first receiving groove; the insulating body is assembled on the second part of the insulating seat body. A receiving groove includes a first insulating body and a second insulating body; the first insulating body is installed on the second insulating body from back to front, and a plurality of first terminal slots are opened on the first insulating body and a plurality of second terminal slots; the plurality of conductive terminals include a set of lower conductive terminals and a set of upper conductive terminals, each lower conductive terminal is respectively assembled in the first terminal slot, and each upper conductive terminal is respectively assembled in the second terminal slot The shielding shell is fixed on the insulating base and the insulating body, and the front part of the shielding shell encloses a plug-in space.

As a further improvement, the first insulating body has a holding base and a first tongue plate protruding forward from the upper part of the front surface of the holding base, and a rectangular notch is opened in the lower part of the left and right sides of the holding base; The second insulating body has a main body, the lower part of the rear surface of the main body is inwardly opened with an installation slot through the bottom surface of the main body, the lower parts of the left and right side walls in the installation slot are formed with stoppers, and the front surface of the main body The upper part protrudes forward a second tongue plate, and the upper part of the front wall surface before installing the groove opens a second receiving groove extending to the front part of the lower surface of the second tongue plate; the holding base of the first insulating body is installed on the In the installation slot of the second insulating body, the stopper part matches with the notch on the holding base so as to hold the holding base in the installation slot, and the first tongue is accommodated in the second receiving groove of the second tongue.

As a further improvement, the front wall of the second accommodating groove protrudes backward to form a plurality of horizontally arranged locking blocks, and the lower part of the front surface of the first tongue plate is provided with a plurality of horizontally arranged docking grooves. The front end surface of a tongue plate abuts against the front wall of the second receiving groove, and the fastening block engages with the docking groove so as to match the second tongue plate with the first tongue plate.

As a further improvement, at least one fastening post protrudes from the lower surface of the main body of the second insulating body, and a rectangular extension plate protrudes backward from the upper part of the rear surface of the main body. At least one positioning hole; the top surface of the rear wall of the insulating seat body is provided with at least one positioning post, and the bottom wall of the insulating seat body is provided with at least one fixing hole; the extension plate is installed on the upper surface of the rear wall, extending The positioning hole on the plate engages with the positioning column on the upper surface of the rear wall, the clamping column on the main body engages with the fixing hole on the bottom wall, and the lower surface of the main body abuts against the upper surface of the bottom wall of the insulating base.

As a further improvement, each of the lower conductive terminals has a first mounting portion extending horizontally, the rear end edge of the first mounting portion is bent downward to extend a first holding portion, and the front end edge of the first mounting portion is connected to There is an arched first contact part that bends forward and downward first, then bends forward and upward to form an arch; each of the upper conductive terminals has a second mounting part that extends horizontally, and the rear end edge of the second mounting part faces A second holding portion is extended from the downward bend, and the front end edge of the second mounting portion is connected with a second contact portion that is bent downward and extended forward; a plurality of first terminal grooves have A plurality of horizontally arranged first holding grooves formed by extending up and down and a plurality of horizontally arranged first installation grooves formed by extending back and forth from the lower surface of the first tongue plate, the first installation grooves and the first fixing grooves The grooves are correspondingly connected; the rear surface of the holding base is provided with a group of second holding grooves arranged horizontally, and the top surface of the holding base is provided with multiple groups of horizontally arranged protrusions at intervals, and the adjacent two protrusions of each group of protrusions A second mounting groove is formed between them, and the second holding groove and the second mounting groove are combined to form a second terminal groove; a plurality of guide holes are opened on the bottom wall of the insulating base; the first of the lower conductive terminals The upper end of a holding part is held in the first holding groove, the lower end of the first holding part protrudes from the lower surface of the holding base and passes through the guide holes correspondingly, and the first mounting part is accommodated in the first mounting groove; The upper part of the second holding part of each upper conductive terminal is held in the second fixing groove, the lower part of each second holding part protrudes from the lower surface of the holding base and passes through the guide holes correspondingly, and each second mounting part Installed in the second installation groove, the second contact portion is arranged on the front surface of the first tongue plate and extends forward.

As a further improvement, the upper conductive terminal includes a first terminal and a plurality of second terminals, the front part of the second mounting part of the first terminal is equal in width to the second contact part, and the rear part of the second mounting part It is equal in width to the upper part of the second holding part and wider than the front part connected to the second mounting part, and the lower end of the second holding part is gradually reduced; the front part of the second mounting part of the second terminal is equal in width to the second contact part , the middle part of the second mounting part is narrower than the front part of the second mounting part, the rear part of the second mounting part and the upper part of the second holding part are equal in width and wider than the front part of the second mounting part, and the lower end of the second holding part Gradually shrink.

As a further improvement, the front part of the lower surface of the second tongue plate is provided with a plurality of stepped terminal locking grooves arranged in a transverse direction, the rear ends of which communicate with the second receiving groove; the second contact portion of the upper conductive terminal Accommodated in the terminal card slot.

As a further improvement, the shielding shell has a top plate, two side plates, a bottom plate and a rear plate; the two side plates are bent and extended from both sides of the top plate, and the bottom plate is connected to the lower edge of the two side plates, The top plate, the two side plates and the bottom plate enclose the front part of the shielding shell to form the insertion space, and the rear plate is formed by bending and extending downward from the rear end edge of the top plate; the rear end edges on both sides protrude backward A first locking foot, the front edges of the two side plates are bent outwards to extend a locking piece, and the middle part of the rear end edge of the bottom plate protrudes backward and protrudes a second locking foot; the rear wall of the insulating seat body The middle part of the left and right sides of the front surface is provided with a fastening hole, and the front surface of the two side walls of the insulating seat body is provided with a card slot; the lower part of the front surface of the main body of the second insulating body is provided with a slot, and the middle part of the slot is There is a through hole; the first clamping feet of the left and right side plates of the shielding shell are respectively inserted into the clamping holes of the insulating seat body, and the rear end edge of the bottom plate is inserted into the slot of the main body of the second insulating body Inside, the second clamping pin is inserted into the through hole, and the clamping pieces of the left and right side plates are respectively clamped in a clamping groove, so that the insertion space of the shielding shell connects the first tongue plate and the second tongue plate of the first insulating body. The second tongue plate of the insulating body surrounds it.

As mentioned above, the socket connector of the present invention is provided with a first receiving groove on the insulating base body, the insulating body is assembled in the first receiving groove of the insulating base body, and a plurality of first terminal grooves and multiple A second terminal slot, a plurality of conductive terminals are respectively assembled in the first terminal slot and the second terminal slot, so that the conductive terminal and the insulating body are changed from one-piece molding to an assembly method, so as to reduce the manufacturing cost of the socket connector and improve the electrical conductivity. The transmission performance of the terminal.

Description of drawings

FIG. 1 is a perspective view of a socket connector in the prior art.

FIG. 2 is an exploded perspective view of the socket connector shown in FIG. 1 .

Fig. 3 is a perspective view of an embodiment of the socket connector of the present invention.

FIG. 4 is an exploded perspective view of the socket connector of the present invention shown in FIG. 3 .

FIG. 5 is a three-dimensional exploded view of another angle of the socket connector of the present invention shown in FIG. 3 .

FIG. 6 is a perspective view of the assembly state of the insulating body and the conductive terminals of the socket connector of the present invention.

Wherein, the reference signs are explained as follows:

Socket connector 100 insulating seat body 10

Rear wall 11 positioning column 111

Fastening hole 112 bottom wall 12

Guide hole 121 Fixing hole 122

Side wall 13 card slot 131

The first accommodating groove 14 and the insulating body 20

The first insulating body 21 holds the base 211

The gap 213 of the first tongue plate 212

The first terminal groove 214 and the first holding groove 2141

The first installation groove 2142 bump 215

The second terminal slot 216 and the second holding slot 2161

The second installation slot 2162 docks with the card slot 217

The main body part 221 of the second insulating body 22

Install slot 2211 stopper 2212

Fastening column 2213 extension plate 2214

Positioning hole 2215 slot 2216

Through hole 2217 second tongue plate 222

Terminal slot 2221 Fastening block 2222

The second receiving groove 223 conduction terminal 30

The first mounting part 311 of the lower conductive terminal 31

The first holding part 312 and the first contact part 313

The second mounting part 321 of the upper conductive terminal 32

The second holding part 322 and the second contact part 323

First terminal 33 Second terminal 34

Shield housing 40 top plate 41

Side plate 42 first clamping foot 421

Fastening sheet 422 bottom plate 43

The second clamp foot 431 rear plate 44

Docking space 45

Detailed ways

In order to describe the technical content, structural features, achieved purpose and effect of the present utility model in detail, the following will be described in detail in combination with specific embodiments and accompanying drawings.

Please refer to FIG. 3 and FIG. 4 , the socket connector 100 of the present invention includes an insulating base 10 , an insulating body 20 , a plurality of conductive terminals 30 and a shielding shell 40 .

4 and 5, the insulating base 10 has a rectangular rear wall 11, the top surface of the rear wall 11 is provided with at least one positioning post 111, and the middle parts of the left and right sides of the front surface of the rear wall 11 are A fastening hole 112 is defined. The lower part of the front surface of the rear wall 11 projects forward a bottom wall 12 in the shape of a rectangular plate. There is at least one fixing hole 122 . The left and right sides of back wall 11 all protrude forward to be provided with side wall 13, and the upper surface of side wall 13 is higher than the upper surface of back wall 11, and side wall 13 is surrounded with back wall 11 and bottom wall 12 to form a first wall. An accommodating slot 14 , a card slot 131 is defined on the front surface of the two side walls 13 .

Referring to FIGS. 4 to 6 , the insulating body 20 defines a plurality of first terminal slots 214 and a plurality of second terminal slots 216 . The insulating body 20 includes a first insulating body 21 and a second insulating body 22 . Specifically, the first insulating body 21 has a rectangular holding base 211 and a first tongue 212 protruding forward from the upper part of the front surface of the holding base 211, and the lower parts of the left and right sides of the holding base 211 are opened. There is a rectangular notch 213, and a plurality of first terminal slots 214 have a plurality of horizontally arranged first holding slots 2141 extending up and down from the front surface of the holding base 211 and extending back and forth from the lower surface of the first tongue plate 211. A plurality of horizontally arranged first mounting grooves 2142 are formed, and the first mounting grooves 2142 communicate with the first holding grooves 2141; the rear surface of the holding base 211 is provided with a set of horizontally arranged T-shaped second holding grooves. Groove 2161, the top surface of the holding base 211 is provided with multiple groups of projections 215 arranged horizontally at intervals, and a second installation groove 2162 is formed between two adjacent projections 215 of each group of projections 215, and the second holding groove 2161 Combined with each second mounting slot 2162 to form a second terminal slot 216 . The lower portion of the front surface of the first tongue plate 212 defines a plurality of docking slots 217 arranged in a transverse direction between the two first installation slots 2142 .

Please continue to refer to FIG. 4 to FIG. 6, the second insulating body 22 has a rectangular main body 221, and the lower part of the rear surface of the main body 221 opens a T-shaped installation slot through the bottom surface of the main body 221 inwardly. 2211 , stoppers 2212 are formed on the lower parts of the left and right side walls of the installation slot 2211 . The lower surface of the main body 221 is protruded with at least one fastening column 2213, and the upper part of the rear surface of the main body 221 protrudes a rectangular extension plate 2214. The extension plate 2214 is provided with at least one circular positioning Hole 2215. A lower portion of the front surface of the main body 221 defines a left and right through slot 2216 , and a middle portion of the slot 2216 defines a through hole 2217 . The upper part of the front surface of the main body part 221 protrudes forward with a second tongue plate 222, and the upper part of the front wall surface of the installation slot 2211 opens a second receiving groove 223 extending to the front of the lower surface of the second tongue plate 222. . A front portion of the lower surface of the second tongue plate 222 is defined with a plurality of stepped terminal locking grooves 2221 arranged transversely and whose rear ends communicate with the second receiving groove 223 . A front wall of the second receiving groove 223 protrudes backward between the two terminal locking grooves 2221 to form a plurality of locking blocks 2222 arranged in a transverse direction.

Please continue to refer to FIG. 4 and FIG. 5, the plurality of conductive terminals 30 include a group of lower conductive terminals 31 and a group of upper conductive terminals 32, each lower conductive terminal 31 has a first mounting portion 311 extending horizontally, the first The rear end edge of the installation part 311 bends downwards and extends a first holding part 312, and the front end edge of the first installation part 311 is connected with a first bending and extending forward and downward, and then bending and extending forward and upward to form an arch. contact portion 313 .

Please continue to refer to FIG. 4 and FIG. 5 , each of the upper conductive terminals 32 has a second mounting portion 321 extending horizontally, and the rear end edge of the second mounting portion 321 is bent downward to extend a second holding portion 322 , A front edge of the second mounting portion 321 is connected to a second contact portion 323 that is bent downwards and then extended forwards. The upper conductive terminal 32 includes a first terminal 33 and a plurality of second terminals 34, the front part of the second mounting part 321 of the first terminal 33 is equal to the width of the second contact part 323, the second mounting part 321 The rear part is as wide as the upper part of the second holding part 322 and wider than the front part connected to the second mounting part 321, and the lower end of the second holding part 322 is gradually reduced; the front part of the second mounting part 321 of the second terminal 34 Equal width to the second contact part 323, the middle part of the second mounting part 321 is narrower than the front part of the second mounting part 321, the rear part of the second mounting part 321 and the upper part of the second holding part 322 are equal in width and narrower than the second mounting part 321. The front part of the part 321 is wide, and the lower end of the second holding part 322 is tapered gradually.

Please refer to FIG. 1 , the shielding housing 40 has a top panel 41 , two side panels 42 , a bottom panel 43 and a rear panel 44 . The two side plates 42 are formed by bending downwards from both sides of the top plate 41, and the bottom plate 43 is connected to the lower edge of the two side plates 42. The inserting space 45 penetrates front and back, and the rear plate 44 is formed by bending and extending downward from the rear end edge of the top plate 41 . The rear edges of the two side plates 42 protrude backwards to protrude a first clamping foot 421 , and the front edges of the two side plates 42 bend outwards to extend a locking piece 422 . A second locking foot 431 protrudes backward from a middle portion of the rear edge of the bottom plate 43 .

Please refer to FIGS. 3 to 6. When assembling the socket connector 100 of the present invention, firstly, each lower conductive terminal 31 is respectively assembled in the first terminal groove 214 of the first insulating body 21. Specifically, each lower conductive terminal 31 The upper end of the first holding portion 312 is held in the first holding groove 2141, the lower end of the first holding portion 322 protrudes from the lower surface of the holding base 211, and the first mounting portion 311 of the lower conductive terminal 31 is accommodated in the first mounting groove 2142, the first contact portion 313 protrudes from the lower surface of the first tongue plate 212; secondly, each upper conductive terminal 32 is respectively assembled in the second terminal groove 216 of the first insulating body 21, specifically, the first terminal 33 is assembled in the second terminal groove 216 in the middle, the second terminal 34 is assembled in the second terminal groove 216 on both sides, the upper part of each second holding part 322 is fixed in the second fixing groove 2161, each second holding part 322 protrudes from the lower surface of the holding base 211, each second mounting portion 321 is installed in the second mounting groove 2162, and the second contact portion 323 is located on the front surface of the first tongue plate 212 and extends forward; then, Install the first insulating body 21 assembled with the lower conductive terminal 31 and the upper conductive terminal 32 on the second insulating body 22 from back to front, specifically, the holding base 211 is installed in the installation slot 2211, and the stop The part 2212 corresponds to the notch on the holding base 211 so as to hold the holding base 211 in the installation slot 2211, the first tongue plate 212 is accommodated in the second receiving groove 223 of the second tongue plate 222, the first tongue plate 212 The front end face of the second accommodating groove 223 is pressed against the front wall of the second receiving groove 223, and the locking block 2222 is engaged with the docking groove 217 so that the second tongue plate 222 and the first tongue plate 212 are matched together, and the upper conductive terminal 32 The second contact portion 323 is accommodated in the terminal slot 2221; then the insulating body 20 is assembled in the first accommodation slot of the insulating base 10 from top to bottom, specifically, the first fixing portion of the lower conductive terminal 31 is The lower end and the lower end of the second holding portion 322 of the upper conductive terminal 32 pass through the guide hole 121 respectively, the extension plate 2214 is installed on the upper surface of the rear wall 11, and the positioning hole 2215 on the extension plate 2214 is connected to the rear wall 11. The positioning post 2215 on the surface is engaged, the fastening post 2213 of the main body 221 of the second insulating body 22 is engaged with the fixing hole 122 on the bottom wall 12, and the lower surface of the main body 221 of the second insulating body 22 abuts against the insulating The upper surface of the bottom wall 12 of the seat body 10; finally, the shielding shell 40 is fixed on the insulating seat body 10 and the insulating body 20, specifically, the first clamp feet 421 of the left and right side plates 42 of the shielding shell 40 are respectively Inserted in the fastening hole 112 of the insulating base 10, the rear end edge of the bottom plate 43 is inserted in the slot 2216 of the main body 221 of the second insulating body 22, and the second clamping foot 431 is inserted in the through hole 2217 , the clamping pieces 422 of the left and right side plates 42 are respectively clamped in a clamping groove 131, and the insertion space 45 of the shielding shell 40 is used to connect the first insulating body 2 The first tongue plate 212 of 1 and the second tongue plate 222 of the second insulating body 22 are enclosed therein.

As mentioned above, the utility model receptacle connector 100 is surrounded by a first receiving groove 14 by the insulating base body 10 , the insulating body 20 is assembled in the first receiving groove 14 of the insulating base body 10 , and the first insulating body 21 A plurality of first terminal slots 214 and a plurality of second terminal slots 216 are provided, each lower conductive terminal 31 is respectively assembled in the first terminal slot 214 on the first insulating body 21, and each upper conductive terminal 32 is respectively assembled in the first insulating body 21. In the second terminal groove 216 on the body 21 , the conductive terminal 30 and the insulative body 20 are changed from one-piece molding to assembly, so as to reduce the manufacturing cost of the receptacle connector 100 and improve the transmission performance of the conductive terminal 30 .

Claims (8)

1. A socket connector, characterized in that: it includes an insulating seat body, an insulating body, a plurality of conductive terminals and a shielding shell; the insulating seat body has a rear wall, and the lower part of the front surface of the rear wall protrudes forward There is a bottom wall, and the left and right sides of the rear wall are protruding forward with one side wall, and the two side walls, the rear wall and the bottom wall are surrounded by a first receiving groove; the insulating body is assembled in the first receiving groove of the insulating seat body Inside, it includes a first insulating body and a second insulating body; the first insulating body is installed on the second insulating body from back to front, and a plurality of first terminal slots and a plurality of first terminal slots are opened on the first insulating body The second terminal slot; the plurality of conductive terminals include a set of lower conductive terminals and a set of upper conductive terminals, each lower conductive terminal is respectively assembled in the first terminal slot, and each upper conductive terminal is respectively assembled in the second terminal slot; the shielding shell The body is fixed on the insulating base body and the insulating body, and the front part of the shielding shell encloses a plug-in space. 2. The receptacle connector according to claim 1, wherein the first insulating body has a holding base and a first tongue protruding forward from the top of the front surface of the holding base, the holding base The lower parts of the left and right sides are provided with a rectangular gap; the second insulating body has a main body, and the lower part of the rear surface of the main body is inwardly provided with an installation slot that runs through the bottom surface of the main body, and the left and right side walls in the installation slot The lower part is formed with a stopper, the upper part of the front surface of the main body protrudes forward and protrudes a second tongue plate, and the upper part of the front wall surface of the installation slot is provided forward with a second accommodation extending to the front part of the lower surface of the second tongue plate. Groove; the holding base of the first insulating body is installed in the installation slot of the second insulating body, the stopper is matched with the gap on the holding base so as to hold the holding base in the installation slot, and the first tongue plate accommodates in the second receiving groove of the second tongue plate. 3. The receptacle connector according to claim 2, characterized in that: the front wall of the second receiving groove protrudes backward to form a plurality of locking blocks arranged in a transverse direction, and the lower part of the front surface of the first tongue plate is opened There are a plurality of docking slots arranged horizontally, the front end of the first tongue plate is against the front wall of the second receiving slot, and the locking block is engaged with the docking slots so as to connect the second tongue plate to the first tongue plate Mated together. 4. The receptacle connector according to claim 2, characterized in that: the lower surface of the main body of the second insulating body is protruded with at least one fastening column, and the upper part of the rear surface of the main body protrudes backward. A rectangular extension plate, at least one positioning hole is opened on the extension plate; at least one positioning post is protruded from the top surface of the rear wall of the insulating seat body, and at least one fixing hole is opened on the bottom wall of the insulating seat body; The extension plate is installed on the upper surface of the rear wall, the positioning hole on the extension plate engages with the positioning column on the upper surface of the rear wall, the locking column on the main body engages with the fixing hole on the bottom wall, and the lower surface of the main body engages with the positioning column on the upper surface of the rear wall. It is on the upper surface of the bottom wall of the insulating seat body. 5. The receptacle connector according to claim 2, wherein each of the lower conductive terminals has a first mounting portion extending horizontally, and the rear end edge of the first mounting portion is bent downward to extend a first mounting portion. A holding part, the front end edge of the first installation part is connected with a first contact part that bends forward and downward, then bends forward and upward to form an arch; each of the upper conductive terminals has a second horizontally extending For the installation part, the rear end edge of the second installation part is bent downward to extend a second holding part, and the front end edge of the second installation part is connected with a second contact part which is first bent downward and then extended forward; The first terminal groove has a plurality of horizontally arranged first holding grooves extending up and down from the front surface of the holding base, and a plurality of laterally arranged first holding grooves extending forward and backward from the lower surface of the first tongue plate. One mounting groove, the first mounting groove communicates with the first holding groove correspondingly; the rear surface of the holding base is provided with a group of second holding grooves arranged horizontally, and the top surface of the holding base is provided with multiple sets of horizontally arranged convex holes at intervals. block, a second installation groove is formed between two adjacent protrusions of each group of protrusions, and the second holding groove and the second installation groove are combined into a second terminal groove; the bottom wall of the insulating seat body is provided with a plurality of Guide holes; the upper ends of the first holding parts of the lower conductive terminals are held in the first holding grooves, and the lower ends of the first holding parts protrude from the lower surface of the holding base and pass through the guide holes correspondingly. A mounting part is accommodated in the first mounting groove; the upper part of the second holding part of each upper conductive terminal is fixed in the second fixing groove, and the lower part of each second holding part protrudes from the lower surface of the holding base and corresponds to Through the guide hole, each second installation part is installed in the second installation groove, and the second contact part is arranged on the front surface of the first tongue plate and extends forward. 6. The receptacle connector according to claim 5, wherein the upper conductive terminal includes a first terminal and a plurality of second terminals, and the front part of the second mounting part of the first terminal is in contact with the second The width of the contact part is equal, the rear part of the second mounting part is equal to the upper part of the second holding part and the width is greater than the front part connected to the second mounting part, and the lower end of the second holding part is gradually reduced; the second terminal of the second terminal The front part of the mounting part is as wide as the second contact part, the middle part of the second mounting part is narrower than the front part of the second mounting part, the rear part of the second mounting part and the upper part of the second holding part are equal in width and wider than the second mounting part The front part of the first part is wide, and the lower end of the second holding part is gradually narrowed. 7. The receptacle connector according to claim 5, characterized in that: the front part of the lower surface of the second tongue plate is provided with a plurality of stepped terminal cards arranged in a horizontal direction, the rear ends of which communicate with the second receiving groove slot; the second contact portion of the upper conductive terminal is accommodated in the terminal slot. 8. The receptacle connector according to claim 2, wherein the shielding housing has a top plate, two side plates, a bottom plate and a rear plate; The bottom plate is connected to the lower end edges of the two side plates, the top plate, the two side plates and the bottom plate enclose the front part of the shielding housing to form the insertion space, and the rear plate is formed by bending and extending downward from the rear end edge of the top plate; The rear edges of both sides protrude backward with a first locking foot, the front edges of both side plates are bent outward and extend a locking piece, and the middle part of the rear edge of the bottom plate protrudes backward with a first clamping foot. Two clip feet; the middle part of the left and right sides of the front surface of the rear wall of the insulating seat body is provided with a fastening hole, and the front surface of the two side walls of the insulating seat body is provided with a card slot; the front surface of the main body of the second insulating body The lower part of the surface is provided with a slot, and the middle part of the slot is provided with a through hole; the first clamp feet of the left and right side plates of the shielding shell are respectively inserted into the clamping holes of the insulating seat body, and the rear end edge of the bottom plate is inserted into It is arranged in the slot of the main body of the second insulating body, the second clip is inserted in the through hole, and the clips on the left and right side plates are respectively clipped in a clip slot, and the insertion space of the shielding shell will The first tongue plate of the first insulating body and the second tongue plate of the second insulating body surround it.

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