TWM496876U - Electrical connector - Google Patents

Description

Electrical connector

The present invention relates to an electrical connector, and more particularly to an electrical connector capable of reliably grounding a grounded metal piece without the need to additionally provide a ground pad on the circuit board.

Continental Patent No. CN201320378153.0 discloses an electrical connector comprising an insulative housing, a first terminal set held on the insulative housing, a shielding member and a metal housing disposed outside the insulating body, the insulative housing comprising a base and extending forward a tongue plate having opposite first and second surfaces, the first terminal set being exposed to the first surface, the shield being disposed on the tongue and positioned between the first surface and the second surface The first terminal group includes a grounding terminal, and the grounding terminal is provided with a contact portion that protrudes toward the shielding member and contacts the shielding member.

The shield of such an electrical connector is grounded by contact with a pointed arch contact formed by bending of the ground terminal toward the shield and a soldering foot behind the shield. However, due to the lack of elasticity, such a pointed arch contact portion is not easy to provide a stable contact, and the grounding effect is inferior, and the grounding terminal is also easy to be assembled due to slight deflection or deformation, resulting in a pointed arch contact portion. It is not possible to keep in contact with the shield, and this way of grounding through the pointed arch contacts is not reliable enough. Grounding through the soldering feet of the shield requires special pads on the board to provide grounding for the solder pads, which will increase the number of pads on the board and the complexity of the ground lines.

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art described above, and to provide an electrical connector that can reliably ground the grounded metal piece without additionally providing a ground pad on the circuit board.

The present invention is directed to the above technical problem and includes an electrical connector that can be correspondingly mounted on a circuit board. The device includes an insulative housing including a body portion and a tongue portion extending forward from the body portion. The tongue portion has a first surface and a second surface opposite to each other; a plurality of conductive terminals are fixed on the insulating body, and the conductive terminals are divided into a set of first conductive terminals and a set of second conductive terminals, Each of the conductive terminals includes a pair of joints and a soldering portion, wherein the abutting portion of the first conductive terminal is exposed on the first surface, and the abutting portion of the second conductive terminal is exposed on the second surface; an outer shield shell, the outer The shielding shell surrounds the tongue portion and forms a pair of connecting cavities, the outer shielding shell extends at least one grounding leg; and a grounding metal piece includes a plate body and at least one ground extending from the plate body a soldering leg, the plate body being embedded in the tongue plate portion and spaced apart from the first conductive terminal and the second conductive terminal, the grounding pad of the grounding metal piece The grounding pads of the outer shield housing are grounded together.

In some embodiments, one side of the outer shield housing extends downwardly from the grounding solder fillet; the grounded metal strip also extends from the two sides of the board to one of the ground solder fillets.

In some embodiments, the outer shield housing has two receiving slots above the ground soldering leg, and the grounding soldering legs of the grounding metal strip are correspondingly disposed in the receiving slot and then from the outer side and the outer shielding shell. The grounding foot is attached to the ground and protrudes downward.

In some embodiments, the receiving groove is open rearward, and the grounding leg of the grounding metal piece is horizontally inserted and fixed into the receiving groove from the back to the front.

In some embodiments, the grounding leg of the grounded metal piece and the grounding leg of the outer shielded housing are both perforated and can be soldered to the same grounded soldering hole of the circuit board.

In some embodiments, a grounding leg of the outer shield case and/or a ground pad of the grounded metal piece are provided with a soldering hole.

In some embodiments, the grounding metal sheet further includes a connecting portion extending rearward from the rear edge of the board body, a cross member extending laterally and connected to the connecting portion, the beam being embedded in the body portion of the insulating body And extending outward from both sides of the body portion, the two grounding legs of the grounding metal piece are respectively bent and extended downward from both ends of the beam.

In some embodiments, the first conductive terminal, the second conductive terminal, and the grounding metal piece are respectively embedded in a first insulating member, a second insulating member, and a third insulating member; wherein the first insulating member is disposed in On the third insulating member, the first insulating member and the second insulating member sandwich the third insulating member therein.

In some embodiments, the third insulating member is provided with the tongue portion, and the first surface of the tongue portion is formed with a set of first terminal receiving grooves, and the second surface of the tongue portion is formed with a group of The two terminals are received in the first terminal receiving groove, and the abutting portion of the second conductive terminal is correspondingly received in the second terminal receiving groove.

In some embodiments, the rear portion of the third insulating member is provided with a plurality of terminal receiving grooves for accommodating the second conductive terminals.

Compared with the prior art, the electrical connector of the present invention can be grounded by grounding the grounding legs of the grounding metal piece and the grounding soldering feet of the outer shielding case, so that the grounding welding of the outer shielding case on the circuit board can be shared. Ground pad for the foot setting. This grounding pad structure of the grounded metal piece eliminates the need for additional grounding pads on the board and also provides a reliable grounding effect.

10‧‧‧Electrical connector

1‧‧‧Insulating body

11‧‧‧First insulation

111‧‧‧ base

112‧‧‧Fixed Department

113‧‧‧ escaping slot

12‧‧‧Second insulation

121‧‧‧ base

122‧‧‧Fixed Department

124‧‧‧fixed slot

13‧‧‧ Third insulation

15‧‧‧ Main body

152‧‧‧Extended side

1522‧‧‧Second Installation Department

1526‧‧‧Limited blocks

153‧‧‧ accommodating space

155‧‧‧Strengthened ribs

1551‧‧‧Terminal receiving slot

14‧‧‧ Body Department

16‧‧ ‧ tongue plate

161‧‧‧First terminal receiving slot

162‧‧‧Second terminal receiving slot

163‧‧‧ holding slot

164‧‧‧ housing trough

165‧‧‧After

1651, 1652‧‧‧ ribs

166‧‧‧

168‧‧‧ first surface

169‧‧‧ second surface

1671‧‧‧ front surface

1672‧‧‧ side surface

109‧‧‧ docking chamber

2‧‧‧Electrical terminals

20‧‧‧ boards

201‧‧‧First pad

202‧‧‧second pad

205‧‧‧ Front ground pad

207‧‧‧After ground pad

209‧‧ ‧ gap

21‧‧‧First conductive terminal

211‧‧‧Docking Department

212‧‧‧Weld Department

213‧‧‧Connecting Department

22‧‧‧Second conductive terminal

221‧‧‧Docking Department

222‧‧‧Weld Department

223‧‧‧Connecting Department

3‧‧‧Outer shield housing

31‧‧‧ top wall

311‧‧‧ joints

32‧‧‧ side wall

322‧‧‧ Reception trough

33‧‧‧ bottom wall

331‧‧‧ joints

35‧‧‧ Front grounding foot

36‧‧‧Snap pieces

37‧‧‧After grounding solder fillet

371‧‧‧Catch tin hole

4‧‧‧Inside shielded housing

41‧‧‧Metal housing components

413‧‧‧Vertical connecting plate

414‧‧‧ hook

4141‧‧‧ bayonet

415‧‧‧Fixed tabs

416‧‧‧ hook

4161‧‧‧ bayonet

417‧‧‧ horizontal fixing plate

418‧‧‧ horizontal extension board

45‧‧‧Fixed section

46‧‧‧Extension

47‧‧‧Connecting section

5‧‧‧Grounding metal sheet

51‧‧‧ board

52‧‧‧Grounding feet

53‧‧‧Connecting Department

54‧‧‧ beams

57‧‧‧Flanking

58, 59‧‧‧through holes

6‧‧‧Combined ontology

7‧‧‧ first module

8‧‧‧ second module

9‧‧‧ Third module

Other features and advantages of the present invention will be apparent from the detailed description of the embodiments referring to the drawings. FIG. 1 is a view of a preferred embodiment and circuit board of the present invention.

Figure 2 is a front elevational view of the electrical connector and circuit board of Figure 1.

Figure 3 is a cross-sectional view taken along line A-A of Figure 2;

Figure 4 is a view showing the circuit board of Figure 1 separated.

Figure 5 is a view showing the outer shield case of the present type of electrical connector separated.

Figure 6 is a view showing the inner shield case of the electrical connector shown in Figure 5 separated.

FIG. 7 is a view in which the first module, the second module, and the third module in FIG. 6 are separated.

Fig. 8 is a view showing the conductive terminal, the grounding metal piece, and the insulating body of Fig. 7 separated.

Although the present invention can be readily embodied in various forms, the specific embodiments shown in the drawings and described in detail in the specification are only The exemplary description of the novel principles is not intended to limit the invention to what is described herein.

Thus, a feature indicated in this specification is intended to illustrate one of the features of one embodiment of the present invention, and is not intended to suggest that each embodiment of the present invention must have the features described. Moreover, it should be noted that this specification describes a number of features. Although certain features may be combined together to illustrate possible system designs, these features are also applicable to other combinations not explicitly illustrated. Accordingly, the illustrated combinations are not intended to be limiting, unless otherwise indicated.

In the embodiments shown in the figures, the indication of directions (such as up, down, left, right, front and back) is used to explain that the structure and motion of the various elements of the present invention are not absolute but relative. These descriptions are suitable when the elements are in the positions shown in the figures. If the description of the position of these elements changes, the indications of these directions also change accordingly.

The following is a better example of the present invention in conjunction with the drawings of the present specification. The examples are further elaborated. Referring to Figures 1 through 8, a preferred embodiment of the present electrical connector is shown.

Referring to Figures 1 through 4, the electrical connector 10 is an electrical connection receptacle that supports high speed data transfer. The electrical connector 10 can be mounted submersibly to a circuit board 20. A notch 209 is disposed in front of the circuit board 20. The circuit board 20 is provided at the rear with a set of first pads 201 and a set of second pads 202 which are laterally displaced from each other and arranged one behind the other. The circuit board 20 is also provided with two front ground pads 205 and two rear ground pads 207. The first pad 201 and the second pad 202 are surface mount type, and the ground pads 205 and 207 are through. The electrical connector 10 generally includes an insulative housing 1 , a plurality of conductive terminals 2 mounted on the insulative housing 1 , an outer shield housing 3 fixed to the outer periphery of the insulative housing 1 , and an outer shield shell fixed to the outer shield shell An inner shield case 4 between the body 3 and the insulative housing 1 and a grounding metal piece 5 embedded in the insulative housing 1. The outer shield housing 3 encloses a mating cavity 109 that is symmetrically disposed 180 degrees. The electrical connector 10 is submerged in a notch 209 of the circuit board 20. These conductive terminals 2 can be soldered to the two sets of pads 201, 202 of the circuit board 20 in a surface mount manner. The outer shield housing 3 has a plurality of ground soldering legs 35, 37 that can be soldered to the ground pads 205, 207 of the circuit board 20.

Referring to FIGS. 5-8, the insulative housing 1 includes a body portion 14 and a tongue portion 16 extending forwardly from the body portion 14. The body portion 14 is relatively wide and the tongue portion 16 is relatively narrow. The insulative housing 1 is specifically composed of a first insulating member 11 , a second insulating member 12 and a third insulating member 13 .

The first insulating member 11 mainly includes a base portion 111 having a rectangular parallelepiped shape, two fixing portions 112 extending in the vertical direction respectively disposed on opposite sides of the base portion 111, and two avoiding portions disposed on the top side of the base portion 111. The groove 113 and two fixing grooves (not shown) provided on the base portion 111. Specifically, each of the fixing portions 112 is a convex rail that extends vertically.

The second insulating member 12 mainly includes a base portion 121 having a rectangular parallelepiped shape, two fixing portions 122 extending in the vertical direction respectively disposed on opposite sides of the base portion 121, and two escaping portions disposed on the bottom side of the base portion 121. A groove (not shown) and two fixing grooves 124 provided on the base 121. Specifically, each fixing portion 122 is a convex rail that extends vertically.

The third insulating member 13 mainly includes a main body portion 15 and a tongue portion 16 extending forward from the front side of the main body portion 15. The body portion 15 generally includes opposing two extending side portions 152 and a reinforcing rib 155 laterally coupled between the two extending side portions 152. The main body portion 15 is formed with a receiving space 153 that penetrates vertically. The first insulating member 11 and the second insulating member 12 are respectively fixed to the lower portion and the upper portion of the receiving space 153 and abut against each other. The tongue portion 16 is further extended forward from the front ends of the two extending side portions 152. A pair of first mounting portions are respectively disposed on opposite inner sides of the lower portions of the two extending side portions 152. A second mounting portion 1522 is respectively disposed on each of the opposite inner sides of the upper portions of the two extending side portions 152. Specifically, the first mounting portion is a first channel that is vertically extended to be recessed inside the lower portion of the extended side portion 152, and the first channel is open at a lower end of the extended side portion 152. The second mounting portion 1522 is a second channel recessed vertically inside the upper portion of the extended side portion 152, and the second channel is open at the upper end of the extended side portion 152. Extended side 152 A limit block 1526 is also projected upwardly at the rear end of the top surface. The top surface of the reinforcing rib 155 is provided with a set of terminal receiving grooves 1551 for receiving and fixing the connecting portion 223 of the second conductive terminal 22 to prevent deformation thereof.

The tongue portion 16 has upper and lower opposing first surfaces (lower side surfaces) 168 and second surfaces (upper side surfaces) 169 and a laterally extending front surface 1671 connected between the first surface 168 and the second surface 169 and Two side surfaces 1672. The first surface 168 of the tongue portion 16 is formed with a set of first terminal receiving grooves 161. The second surface 169 of the tongue portion 16 is formed with a set of second terminal receiving grooves 162. The tongue portion 16 includes a rear section 165 proximate the body portion 14 and a front section 166 extending forwardly from the rear section 165. Each of the two sides of the front section 166 of the tongue portion 16 is further formed with a recessed catching groove 163. Each of the two sides of the rear section 165 of the tongue portion 16 is also formed with a receiving groove 164. The first surface 168 and the second surface 169 of the rear section 165 protrude perpendicularly from the extending direction of the tongue portion 16 to project a plurality of ribs 1651, 1652, and the terminal receiving grooves 161, 162 are formed between the two ribs 1651, 1652 One paragraph. The top surfaces of the ribs 1651, 1652 are substantially flush, and the distance between the top surfaces of the ribs 1651, 1652 on the upper and lower sides of the tongue portion 16 defines the thickness of the rear section 165. The thickness of the rear section 165 is larger than the thickness of the front section 166. This configuration allows the tongue portion 16 to have better strength from being damaged by the docking connector.

Specifically, the first insulating member 11 is matched with the two first mounting portions on the third insulating member 13 through the two fixing portions 112, and the first insulating member 11 is inserted and fixed from the bottom to the top. In the lower portion of the accommodating space 153. The second insulating member 12 is through two fixing portions 122 The two second mounting portions 1522 of the third insulating member 13 are correspondingly engaged, and the second insulating member 12 is inserted and fixed from the top to the upper portion of the receiving space 153. The base of the second insulating member 12 The bottom surface of the 121 and the top surface of the base portion 111 of the first insulating member 11 abut against each other. This mating structure allows the three insulating members 11, 12 and 13 to be joined together very compactly to form the body portion 14 of the insulative housing 1 (see Fig. 3).

Referring to FIGS. 5 to 8, the conductive terminals 2 are integrally formed by stamping and bending a metal material. These conductive terminals 2 are divided into a set of first conductive terminals 21 and a set of second conductive terminals 22. Each of the first conductive terminals 21 includes a pair of joints 211 , a welded portion 212 , and a connecting portion 213 connected between the abutting portion 211 and the welded portion 212 . The butting portion 211 is correspondingly received in the first terminal receiving groove 161 and exposed to the first surface 168 of the tongue portion 16 . The welded portion 212 extends rearward from the body portion 14 of the insulative housing 1. The connecting portion 213 is embedded in the body portion 14. Similarly, each of the second conductive terminals 22 includes a pair of joints 221, a welded portion 222, and a connecting portion 223 connected between the abutting portion 221 and the welded portion 222. The butting portion 221 is correspondingly received in the second terminal receiving groove 162 and exposed to the second surface 169 of the tongue portion 16 . The welded portion 222 extends rearward from the body portion 14 of the insulative housing 1. The connecting portion 223 is embedded in the body portion 14. The tail portion of the connecting portion 223 corresponds to the terminal receiving groove 1551 of the reinforcing rib 155 of the main body portion 14 . Referring to FIG. 2, the abutting portion 211 of the first conductive terminal 21 and the abutting portion 221 of the second conductive terminal 22 are symmetrically arranged 180 degrees in the mating cavity 109, thereby inserting the docking connector in the forward or reverse direction. The purpose of proper connection can be achieved in the electrical connector 10.

Referring to FIGS. 4-8, the outer shield housing 3 includes a top wall 31, two side walls 32, and a bottom wall 33. A front grounding leg 35 extends downwardly from the middle of each side wall 32. A rear grounding leg 37 extends downwardly from the rear of each side wall 32. A soldering hole 371 is provided on the rear grounding leg 37 to increase the bonding force with the circuit board 20. A locking piece 36 is also formed at the rear of each side wall 32. Each of the side walls 32 defines an elongated receiving groove 322 above the rear grounding leg 37. The receiving groove 322 is located below the snap tab 36 and is open rearward. When the outer shielding shell 3 is sleeved on the insulative housing 1, the rear end of the side wall 32 will abut against the limiting block 1526 on the insulative housing 1. The locking tab 36 will be correspondingly bent. The outer side of the insulative housing 1 is fastened to the insulative housing 1 .

Referring to FIGS. 3 and 5 to 8, the inner shield case 4 is fixed to the outer periphery of the body portion 14 and abuts a distance extending around the rear portion 165 of the tongue portion 16. Specifically, the inner shield case 4 includes a fixed section 45 positioned at the rear and attached to the front section of the body portion 14, an extended section 46 positioned forward and attached to the rear section 165 of the tongue portion 16, and A connecting section 47 is vertically connected between the fixed section 45 and the extended section 46. The inner shield case 4 can be grounded by the fixed section 45 in contact with the outer shield case 3. Since the extending portion 46 is mounted on the ribs 1651 and 1652, the extending portion 46 and the first conductive terminal 21 and the second conductive terminal 22 can maintain a gap along the thickness direction of the tongue portion 16.

The inner shield shell 4 is specifically formed by assembling two metal shell members 41 up and down. Each of the metal housing members 41 includes a horizontal fixing plate 417 fixed to the body portion 14 and attached to the rear portion 165 of the tongue portion 16 A horizontal extension plate 418 and a vertical connection plate 413 vertically connected between the horizontal fixing plate 417 and the horizontal extension plate 418. The rear edge of the horizontal fixing plate 417 vertically extends two fixing protrusions 415, and the fixing protrusions 415 are preferably barbs. Two hooks 414, 416 are vertically extended on both sides of the horizontal extension plate 418, wherein the bayonet 4141 of the hook 414 is opposite to the bayonet 4161 of the hook 416.

The fixing tab 415 of the metal housing member 41 located below is correspondingly inserted into the fixing groove 114 of the first insulating member 11. The fixing tab 415 of the metal housing member 41 located above is correspondingly inserted into the fixing groove 124 of the second insulating member 12. In addition, the two metal housing members 41 can be locked to each other by the mutual hooking of the hooks 414, 416. Specifically, the hooks 414, 416 are fastened in the receiving grooves 164 of the insulative housing 1 so that the rear portion 165 of the tongue portion 16 can be hung therein.

The inner shield case 4 may be joined to the joint portions 311, 331 of the outer shield case 3 by laser welding or elastic contact to be grounded.

Referring to Figure 8, the grounded metal sheet 5 is integrally stamped and formed. The grounding metal piece 5 includes a plate body 51 and a connecting portion 53 extending rearward from the rear edge of the plate body 51, and a cross beam 54 extending laterally to the connecting portion 53 and further extending from both sides of the beam 54 Two grounding legs 52 extending outwardly.

Specifically, the connecting portion 53 is constituted by two extending arms that are spaced rearward from the rear edge of the plate body 51. The beam 54 has an I-shape, and two side wings 57 are formed at two ends thereof. Wherein, the wheel of the plate body 51 The profile is comparable to the contour of the front section of the tongue portion 16. The plate body 51 is embedded in the tongue plate portion 16 and is spaced apart from the first conductive terminal 21 and the second conductive terminal 22. The plate body 51 is partially exposed to the front surface 1671 and the two side surfaces 1672 of the tongue portion 16. It is to be noted that the two sides of the board body 51 are exposed to the latching groove 163 so as to be in contact with the elastic piece (not shown) on the side of the mating plug to provide a grounding loop for the grounding metal piece 5. The beam 54 is embedded in the main body portion 15 of the third insulating member 13 and protrudes outward from both sides of the main body portion 15. Specifically, the main body of the beam 54 is embedded in the reinforcing rib 155 of the main body portion 15. The two side wing portions 57 are respectively embedded on the two extending side portions 152 of the main body portion 15, thereby facilitating the structural strength of the main body portion 15. .

The two grounding legs 52 are bent downwardly from opposite ends of the beam 54 respectively. The two grounding legs 52 project outwardly from both sides of the body portion 14 of the insulative housing 1 and are grounded together with the grounding legs 37 of the outer shield housing 3. Specifically, each of the grounding legs 52 is horizontally disposed through the receiving groove 322 of the outer shielding case 3 and then protrudes from the outer side and the corresponding grounding leg 37 to the ground. The solder fillet 37 shares a ground pad 207 (see FIGS. 1 and 4) on the circuit board 20 for grounding. Contact of the grounding leg 52 with the outer shield case 3 also facilitates further enhancing the grounding effect of the grounded metal piece 5.

Further, a plurality of through holes 58 are formed in the plate body 51. Preferably, the through holes 58 are symmetrically arranged along the central axis extending forward and backward. Two through holes 59 are also formed at the boundary between the beam 54 and the connecting portion 53. These through holes 58, 59 can increase the bonding strength between the third insulating member 13 and the grounding metal piece 5. degree.

Referring to FIGS. 6-8, the first conductive terminals 21 are embedded in the first insulating member 11 by a manufacturing process using an insert mold to form a first module 7. The second set of second conductive terminals 22 are embedded into the second insulating member 12 by a manufacturing process of insert molding to form a second module 8. The grounding metal piece 5 is embedded into the third insulating member 13 by a manufacturing process of insert molding to form a third module 9. The first module 7 is stacked on the third module 9 from bottom to top, so that the abutting portion 211 of the first conductive terminal 21 is correspondingly inserted into the first terminal of the tongue portion 16 . The second module 8 is stacked on the third module 9 from top to bottom, so that the butting portion 221 of the second conductive terminal 22 is correspondingly inserted into the tongue plate portion 16 The two terminals are received in the receiving groove 162. This combined structure facilitates manufacturing and assembly.

The assembly process of the electrical connector of the present invention generally comprises: stamping and bending forming the conductive terminal 2, the outer shield shell 3, the metal shell member 41 and the grounding metal sheet 5; and then adopting the manufacturing process of insert molding to obtain the first mold Group 7, the second module 8 and the third module 9; then the first module 7 is inserted from the bottom to the bottom of the receiving space 153 of the third module 9, and then the second module 8 is Inserting the upper portion of the receiving space 153 of the third module 9 downward until the bottom surface of the second insulating member 12 abuts against the top surface of the first insulating member 11 , so that the first module 7 is disposed in the third module 9 and the first module 7 and the second module 8 tightly clamp the third module 9 therein to thereby obtain the combined body 6; then, the two metal housing members 41 are correspondingly assembled to the combination On the body 6; finally, the outer shield casing 3 is moved from the rear to the rear. The sleeve is placed on the insulating body 1.

Compared with the prior art, the electrical connector 10 of the present invention can be placed on the circuit board 20 by grounding the grounding legs 52 of the grounding metal piece 5 and the grounding legs 37 of the outer shielding case 3. The ground pad 207 of the grounding pad 37 of the shield case 10 is disposed. The ground pad 52 structure of the ground metal piece 5 does not need to additionally provide a ground pad on the circuit board 20, and the ground metal piece 5 can also be obtained. Reliable grounding effect.

The above is only a preferred embodiment of the present invention, and is not intended to limit the embodiments of the present invention. Those skilled in the art can make corresponding modifications or modifications in a very convenient manner according to the main idea and spirit of the present invention. The scope of protection shall be subject to the scope of protection required by the scope of application for patents.

10‧‧‧Electrical connector

2‧‧‧Electrical terminals

20‧‧‧ boards

201‧‧‧First pad

202‧‧‧second pad

205‧‧‧ Front ground pad

207‧‧‧After ground pad

209‧‧ ‧ gap

32‧‧‧ side wall

322‧‧‧ Reception trough

35‧‧‧ Front grounding foot

37‧‧‧After grounding solder fillet

52‧‧‧Grounding feet

Claims (10)

An electrical connector that can be correspondingly mounted on a circuit board; the electrical connector includes: an insulative housing including a body portion and a tongue portion extending forwardly from the body portion, the tongue portion a first surface and a second surface opposite to each other; a plurality of conductive terminals fixed on the insulating body, the conductive terminals being divided into a set of first conductive terminals and a set of second conductive terminals, each conductive terminal comprising a pair of joints and a soldering portion, wherein the abutting portion of the first conductive terminal is exposed on the first surface, and the abutting portion of the second conductive terminal is exposed on the second surface; an outer shield shell surrounding the outer shield shell The outer space of the tongue portion forms a pair of connecting cavities, the outer shielding shell extends at least one grounding leg; and a grounding metal piece includes a plate body and at least one grounding leg extending from the plate body The plate body is embedded in the tongue plate portion and spaced apart from the first conductive terminal and the second conductive terminal, and the grounding soldering leg of the grounding metal piece is grounded with the grounding soldering leg of the outer shielding case. The electrical connector of claim 1, wherein each of the two sides of the outer shield case extends downwardly from the grounding solder fillet; the grounding metal piece extends from each side of the board body Grounding solder feet as described. The electrical connector of claim 2, wherein the outer shield housing has two receiving slots above the ground soldering leg, and the grounding soldering stud of the grounding metal piece is correspondingly disposed in the receiving slot and then from the outside The outer shield shell is connected The grounding foot is attached to the ground and protrudes downward. The electrical connector of claim 3, wherein the receiving slot is open rearward, and the grounding leg of the grounding metal piece is horizontally inserted and fixed into the receiving slot from the back to the front. The electrical connector of claim 1, wherein the grounding leg of the grounding metal piece and the grounding leg of the outer shielding case are both perforated and can be soldered to the same grounding hole of the circuit board. in. The electrical connector of claim 5, wherein the grounding soldering leg of the outer shielding housing and/or the grounding soldering leg of the grounding metal piece are provided with a soldering hole. The electrical connector of any one of claims 2 to 6, wherein the grounding metal sheet further comprises a connecting portion extending rearward from a rear edge of the plate body, a beam extending laterally and connected to the connecting portion The beam is embedded in the body portion of the insulating body and protrudes outwardly from both sides of the body portion. The two grounding legs of the grounding metal piece are respectively bent and extended downward from both ends of the beam. The electrical connector of any one of claims 1 to 6, wherein the first conductive terminal, the second conductive terminal, and the grounding metal piece are respectively embedded in a first insulating member, a second insulating member, and a third In the insulating member, wherein the first insulating member is disposed on the third insulating member, and the first insulating member and the second insulating member sandwich the third insulating member therein. The electrical connector of claim 8, wherein the third insulating member is provided with the tongue portion, and the first surface of the tongue portion is formed with a set of first terminal receiving grooves, and the tongue portion is The second surface is formed with a set of second terminal receiving slots; wherein the abutting portion of the first conductive terminal is correspondingly received to the first terminal In the receiving slot, the abutting portion of the second conductive terminal is correspondingly received in the second terminal receiving groove. The electrical connector of claim 8, wherein the rear portion of the third insulating member is provided with a plurality of terminal receiving slots for receiving the second conductive terminals.