Electric connector and manufacturing method thereof

Abstract

The invention discloses an electric connector and a manufacturing method of the electric connector, and the electric connector comprises a first terminal module which is provided with a row of first terminals and a shielding sheet, a first insulating part is formed on the first terminal module and the shielding sheet through injection molding, a first grounding terminal is provided with an exposed section, the shielding sheet is provided with a convex part, and a concave area is formed at a position corresponding to the convex part; the concave area is upwards exposed out of the first insulating part; the second terminal module is stacked on the first terminal module and is provided with a row of second terminals and a second insulating part formed on the row of second terminals in an injection molding manner, the exposed section of the first grounding terminal is partially overlapped with the second signal terminal when viewed from the vertical direction, and the second insulating part covers the upper part of the concave area; the outer insulating part wraps the first terminal module and the second terminal module in an injection molding mode, the second insulating part is used for preventing plastic cement of the outer insulating part from entering the concave area, the outer insulating part is provided with an open groove, laser enters the open groove to enable the exposed section and the lower surface of the convex part to be welded and fixed, and short circuit caused by mutual conduction of the first terminal and the second terminal is avoided.

Description

[Technical field]

[0001] The present invention relates to an electric connector and a method for manufacturing the electric connector, in particular to an electric connector capable of preventing terminal short circuit and a method for manufacturing the electric connector. [Background technology]

[0002] Existing electrical connectors usually include a lower terminal module, an upper terminal module, and a shielding sheet sandwiched therebetween, as well as an external insulating member injection molded on the outer side of the upper terminal module, the lower terminal module, and the shielding sheet. When manufacturing an electrical connector, a person skilled in the art will first injection mold a lower insulating block on the outer side of the lower row of terminals to obtain a lower terminal module, and then injection mold an upper insulating block on the outer side of the upper row of terminals to obtain an upper terminal module. The prepared lower terminal module and upper terminal module will be assembled on both sides of the shielding sheet, respectively, and the convex bump of the shielding sheet will be welded and fixed to the grounding terminal of the lower row of terminals by laser welding, and finally the external insulating member will be injection molded to cover and fix the welded lower terminal module, upper terminal module, and shielding sheet together. The above-mentioned method for manufacturing an electrical connector requires first processing the upper terminal module and the lower terminal module at an injection molding station, then transporting them to a welding station to weld and fix the convex bump of the shielding sheet to the grounding terminal of the lower row of terminals, and then transporting them back to the injection molding station to injection mold the external insulating member.

[0003] The reason why it is necessary to weld first and then injection mold the outer insulating part is that during the injection molding process of the outer insulating part, plastic will penetrate between the upper terminal module and the lower terminal module to cover and fix the shielding plate. Therefore, the recessed area on the upper side of the shielding plate corresponding to the convex bump will be filled with plastic. When laser welding is performed on the convex bump and the grounding terminal in the lower row of terminals, the high temperature generated by the laser will carbonize the plastic in the recessed area of ​​the shielding plate, and the carbonized plastic will directly contact the upper row of terminals, thereby causing the upper row of terminals, the shielding plate and the lower row of terminals to be connected to each other through the carbonized plastic, thereby causing a short circuit, affecting the yield rate of the electrical connector.

[0004] Therefore, it is necessary to design an electrical connector and a method for manufacturing the electrical connector to solve the above technical problems. [Summary of the invention]

[0005] The object of the present invention is to provide an electrical connector and a method for manufacturing the electrical connector, wherein a convex portion is provided on the bottom surface of the shielding sheet corresponding to the exposed section of the first grounding terminal, a recessed area is formed on the top surface of the shielding sheet corresponding to the position of the convex portion, and a second insulating member is sealed on the recessed area of ​​the shielding sheet to prevent plastic from entering the recessed area when the external insulating member is injection molded, so as to solve the problem that when the lower surface of the convex portion is welded to the exposed section, the plastic in the recessed area is carbonized, causing the exposed section of the first grounding terminal and the second signal terminal to be connected to each other and short-circuited, thereby improving the yield rate of the manufactured electrical connector.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] An electrical connector, comprising: a first terminal module, which has a plurality of first terminals arranged in a row along a left-right direction, and a shielding sheet located above the row of first terminals, a first insulating member injection-molded on the row of first terminals and the shielding sheet, and the row of first terminals includes a first grounding terminal and a first signal terminal, the first grounding terminal has an exposed section downwardly exposed outside the first insulating member, a convex portion is convexly provided on the bottom surface of the shielding sheet corresponding to the exposed section of the first grounding terminal, a concave area is formed on the top surface of the shielding sheet corresponding to the position of the convex portion, the lower surface of the convex portion contacts the exposed section, and the concave area is upwardly exposed outside the first insulating member; a second terminal module is stacked on the first terminal module, and the second terminal module It has a plurality of second terminals arranged in a row along the left-right direction, and a second insulating member injection-molded on the row of second terminals, the row of second terminals includes a second grounding terminal and a second signal terminal, and the exposed section of the first grounding terminal overlaps with the second signal terminal portion when viewed from the top to the bottom, and the second insulating member covers the upper part of the recessed area; an outer insulating member is injection-molded to cover the first terminal module and the second terminal module, the second insulating member is used to prevent the plastic of the outer insulating member from entering the recessed area, and the outer insulating member is provided with a groove corresponding to the exposed section of the first grounding terminal, the lower surface of the exposed section is exposed in the groove, which facilitates the laser to enter the groove and irradiate the lower surface of the exposed section, so that the exposed section is welded and fixed to the lower surface of the protrusion.

[0008] Furthermore, the exposed section of the first ground terminal includes a first part and a second part. The first part overlaps with the second signal terminal part when viewed in the up-down direction. The second part is protruded on one side of the first part in the left-right direction. The second part is offset from the second signal terminal when viewed in the up-down direction, and the second part is welded to the lower surface of the protrusion.

[0009] Furthermore, there are multiple first signal terminals and first ground terminals, two adjacent first signal terminals form a first differential pair, each first signal terminal has a first signal contact portion and a first signal fixing portion connected to the rear end of the first signal contact portion, the first signal fixing portion is fixed to the first insulating member, and the width of the first signal fixing portion in the left-right direction is smaller than the width of the first signal contact portion, and the second portions of the two first ground terminals arranged on the left and right sides of the first differential pair are both protruded toward the first signal fixing portion of the first differential pair.

[0010] Furthermore, each first grounding terminal has a first grounding contact portion and a first grounding fixing portion connected to the first grounding contact portion, the width of the first grounding fixing portion in the left-right direction is greater than the width of the first signal fixing portion, and the first grounding fixing portion has an exposed section connected to the rear end of the first grounding contact portion and a buried section bent downward and extending from the exposed section, the buried section is buried in the first insulating member, and a through hole penetrating along the up-down direction is provided at the bent connection between the exposed section and the buried section.

[0011] Furthermore, a first signal inclined portion extends backward and downward from the first signal fixed portion, a first signal welding portion extends from the rear end of the first signal inclined portion, the width dimension of the first signal welding portion in the left-right direction is smaller than the width dimension of the first signal fixed portion in the left-right direction, the two first signal inclined portions of a first differential pair have two turning sections away from each other, the second grounding terminal has a second grounding contact portion and a second grounding fixed portion extending backward and bent from the second grounding contact, the second grounding fixed portion partially overlaps with the two first signal fixed portions when viewed in the up-down direction, and the left and right sides of the second grounding fixed portion are folded back with two folded arms toward the turning sections of the corresponding two first signal inclined portions, and the two folded arms are respectively shielded above the corresponding two turning sections.

[0012] Furthermore, the rear end of the exposed section of the first grounding terminal is bent and extended to form a buried section, and a first grounding inclined section is bent backward and extended obliquely from the buried section. The connection between the first grounding inclined section and the buried section is buried in the first insulating member, and a glue flow hole is passed through the connection between the first grounding inclined section and the buried section.

[0013] Further, the left and right sides of the shielding sheet respectively extend a connecting portion and a holding portion located behind the connecting portion, the connecting portion and the recessed area partially overlap along the left and right directions, and the two connecting portions are of different lengths, the two connecting portions are held on the first insulating member and are respectively exposed on the left and right sides of the first insulating member, and the holding portion is inserted and fixed to the first insulating member

[0014] Furthermore, the second grounding terminal has a second grounding contact portion and a second grounding fixing portion extending backward and bent from the second grounding contact portion, and a second grounding welding portion extending from the lower end of the second grounding fixing portion and bent backward, the second grounding fixing portion has a horizontal section connected to the rear end of the second grounding contact portion and a vertical section extending and bent downward from the horizontal section, a through hole passes through the horizontal section from top to bottom, an abutting spring sheet is bent backward and downward from the front wall of the through hole, the end of the abutting spring sheet close to the second grounding welding portion is a free end, and the abutting spring sheet is used to abut against the upper surface of the shielding sheet.

[0015] Furthermore, the second signal terminal has a second signal contact portion and a second signal fixing portion extending backward from the second signal contact portion and bent, the width of the second grounding fixing portion in the left-right direction is greater than the width of the second signal fixing portion, and a first hole is penetrated at the bent connection between the horizontal section and the vertical section of the second grounding fixing portion, the vertical section is buried in the external insulating member, and a second hole is penetrated on one side of the vertical section close to the second grounding welding portion along the thickness direction of the second grounding terminal, and part of the plastic of the external insulating member enters the second hole.

[0016] Furthermore, the second insulating part is provided with a material groove concave from top to bottom, and the abutting spring sheet is exposed in the material groove. The outer insulating part is provided with a clearance groove corresponding to the material groove. The clearance groove is located above the material groove and is connected to the material groove. When viewed from top to bottom, the surrounding contour of the material groove is exposed within the surrounding contour of the clearance groove.

[0017] In addition, a method for manufacturing an electrical connector includes the following steps:

[0018] A row of first terminals is provided, the row of first terminals including a first grounding terminal and a first signal terminal; a metal plate is provided, and the metal plate is punched into a shielding sheet having a convex portion and a corresponding concave area; the shielding sheet is stacked on the top of the row of first terminals so that the lower surface of the convex portion contacts the first grounding terminal, and then the stacked row of first terminals and the shielding sheet are put into an injection mold together, and a first injection-molded insulating member is used to cover and fix the row of first terminals and the shielding sheet to form a first terminal module, wherein the exposed section of the first grounding terminal is downwardly exposed to the first insulating member, and the concave area of ​​the shielding sheet is upwardly exposed to the first insulating member;

[0019] Providing a row of second terminals, the row of second terminals including a second ground terminal and a second signal terminal; placing the row of second terminals into an injection mold, and injecting a second insulating member to cover and fix the row of second terminals to form a second terminal module;

[0020] The second terminal module is stacked and assembled on the top of the first terminal module so that the second insulating member covers the recessed area and the first ground terminal and the second signal terminal partially overlap in the up-down direction;

[0021] Put the assembled first terminal module and the second terminal module into an injection mold together, and inject an outer insulating member to cover and fix the first terminal module and the second terminal module, wherein the outer insulating member has a groove, and the lower surface of the exposed section is exposed in the groove;

[0022] Laser welding is performed on the lower surface of the exposed section exposed in the groove, so that the exposed section is welded and fixed to the welding surface of the protrusion to obtain a semi-finished electric connector;

[0023] A metal shell is provided, and the semi-finished electric connector is installed in the metal shell to obtain the electric connector.

[0024] Furthermore, the step of providing a metal housing and installing the semi-finished electrical connector into the metal housing to obtain the electrical connector further includes:

[0025] A support member having a socket extending through the front-to-back direction is provided, the bottom wall of the metal shell is inserted into the socket to install the support member on the metal shell, and then the semi-finished electric connector is installed into the metal shell, and the lower surface of the outer insulating member in the semi-finished electric connector contacts the upper surface of the support member.

[0026] Compared with the prior art, the electrical connector and the method for manufacturing the electrical connector designed in the present invention have the following beneficial effects:

[0027] The first insulating member in the first terminal module of the present invention is injection molded on a row of first terminals and a shielding sheet, the first grounding terminal has an exposed section that is exposed downward outside the first insulating member, the bottom surface of the shielding sheet corresponds to the exposed section of the first grounding terminal and is convexly provided with a convex portion, the top surface of the shielding sheet corresponds to the position of the convex portion to form a recessed area, the lower surface of the convex portion is in contact with the exposed section, the recessed area is upwardly exposed to the first insulating member, the second terminal module is stacked on the first terminal module, and the exposed section of the first grounding terminal overlaps with the second signal terminal portion when viewed from the top and bottom, and the second insulating member covers the recessed area; in this way, when the outer insulating member is injection molded to cover the first terminal When the sub-module and the second terminal module are assembled, the second insulating member can prevent the plastic of the outer insulating member from entering the recessed area, thereby preventing the plastic from carbonizing and causing a short circuit when the exposed section and the lower surface of the protrusion enter the recessed area during laser welding, thereby improving the yield rate of the electrical connector; and because the exposed section and the lower surface of the protrusion are welded after the first insulating member, the second insulating member and the outer insulating member are injection molded, the first insulating member, the second insulating member and the outer insulating member can be injection molded in the same injection molding station, which can simplify the manufacturing process of the electrical connector and save the manufacturing cost of the connector.

Brief Description of the Drawings

[0028] Figure 1 is a perspective exploded view of a first embodiment of an electrical connector of the present invention;

[0029] Figure 2 It is a three-dimensional exploded view of the first terminal module of the first embodiment of the electrical connector of the present invention;

[0030] Figure 3 It is a three-dimensional exploded view of the second terminal module of the first embodiment of the electrical connector of the present invention;

[0031] Figure 4 It is a top view of the first embodiment of the electrical connector of the present invention without the metal shell;

[0032] Figure 5 for Figure 4 Section view on AA;

[0033] Figure 6 for Figure 4 Sectional view on BB;

[0034] Figure 7 A bottom view of a first terminal and a second terminal of a first embodiment of an electrical connector of the present invention;

[0035] Figure 8A schematic diagram of a first terminal, a second terminal and a shielding sheet of a first embodiment of an electrical connector of the present invention at a viewing angle;

[0036] Fig. 9 It is a three-dimensional assembly schematic diagram of the first embodiment of the electrical connector of the present invention without the metal shell;

[0037] Fig.10 A bottom view of the first embodiment of the electrical connector of the present invention without the metal housing;

[0038] Fig.11 A flowchart of a method for manufacturing an electrical connector according to an embodiment of the present invention;

[0039] Fig.12 for Fig.11 A structural flow diagram of a method for manufacturing a CEC connector;

[0040] Fig.13 A schematic diagram of a first terminal, a second terminal and a shielding sheet of a second embodiment of an electrical connector of the present invention at a viewing angle;

[0041] Fig.14 It is a three-dimensional exploded view of the first terminal, the second terminal and the shielding sheet of the second embodiment of the electrical connector of the present invention;

[0042] Fig.15 A three-dimensional assembly diagram of a first terminal, a second terminal and a shielding sheet of a second embodiment of an electrical connector of the present invention;

[0043] Fig.16 for Fig.15 Sectional view on CC.

[0044] Description of the accompanying drawings for the specific implementation:

[0045]

[0046] [Specific implementation method]

[0047] In order to better understand the content of the present invention, the present invention is further described in detail in conjunction with specific implementation schemes and drawings.

[0048] like Figures 1 to 10 , Figures 13 to 16 As shown, the electrical connector 1000 of the present invention is defined with a front-to-back direction, a left-to-right direction and an up-to-down direction perpendicular to the front-to-back direction. For the convenience of understanding the drawings, the forward direction in the front-to-back direction is the positive direction of the X-axis, the rightward direction in the left-to-right direction is the positive direction of the Y-axis, and the upward direction in the up-to-down direction is the positive direction of the Z-axis.

[0049] like Figures 1 to 10The first embodiment of the electrical connector 1000 of the present invention is soldered on a circuit board (not shown, the figure below), which includes a first terminal module M1 and a second terminal module M2 stacked on the first terminal module M1. An outer insulating member 6 is injection molded to cover the first terminal module M1 and the second terminal module M2. Then, the outer insulating member 6, the first terminal module M1 and the second terminal module M2, which are injection molded as one, are inserted into a docking cavity 71 of a metal shell 7, so that the electrical connector 1000 can be connected with a docking connector. For docking, the electrical connector 1000 also includes a support member 8 having a socket 81 extending through the front-to-back direction. The support member 8 is disposed on the bottom wall of the metal shell 7. The bottom wall of the metal shell 7 is partially inserted into the socket 81. The support member 8 is sleeved on the outside of the bottom wall of the metal shell 7, so that a portion of the support member 8 is disposed on the outside of the metal shell 7 to support the front end of the electrical connector 1000 upward, and another portion of the support member 8 is disposed inside the metal shell 7 to contact the outer insulating member 6 to locate the installation position of the outer insulating member 6 when it is installed in the metal shell 7. Furthermore, a boss 82 is disposed on the support member 8. The boss 82 is disposed on the lower surface of the support member 8. The boss 82 is used to be inserted into an external circuit board to locate the installation position of the electrical connector 1000.

[0050] like Figure 1 , Figure 2 , Figure 5 , Figure 7 and Fig.10As shown, the first terminal module M1 has a plurality of first terminals 1 arranged in a row along the left-right direction, and a shielding sheet 2 located above the row of first terminals 1, and a first insulating member 3 is injection molded on the row of first terminals 1 and the shielding sheet 2. The row of first terminals 1 includes a plurality of first signal terminals 11 and a plurality of first grounding terminals 12, each of the first signal terminals 11 has a first signal contact portion 111 and a first signal fixing portion 112 connected to the rear end of the first signal contact portion 111, the first signal fixing portion 112 is fixed to the first insulating member 3, and the width of the first signal contact portion 111 along the left-right direction is greater than the width of the first signal fixing portion 112, the rear end of each first signal fixing portion 112 is connected to a first signal inclined portion 113, and a first signal welding portion 114 extends from the rear end of the first signal inclined portion 113, the first signal welding portion 114 is used to be welded with a circuit board, and the width dimension of the first signal welding portion 114 in the left-right direction is smaller than the width dimension of the first signal fixing portion 112 in the left-right direction. Two adjacent first signal terminals 11 also form a first differential pair S1, and the distance between the first signal contact portions 111 of the two first signal terminals 11 of each first differential pair S1 in the left-right direction is greater than the distance between the first signal fixing portions 112 of the two first signal terminals 11 in the left-right direction. In addition, the two first signal inclined portions 113 of a first differential pair S1 have two turning sections 1131 away from each other. The provision of the two turning sections 1131 not only increases the distance between a portion of the two first signal inclined portions 113, but also increases the distance between the two first signal welding portions 114, thereby making the spacing between the two first signal welding portions 114 greater than the spacing between the two first signal fixing portions 112.

[0051] like Figure 1 , Figure 2 , Figure 5 , Figure 7 and Fig.10As shown, each first grounding terminal 12 has a first grounding contact portion 121 and a first grounding fixing portion 122 connected to the rear end of the first grounding contact portion 121. The first grounding contact portion 121 is used to connect with the docking connector (not shown, the same below). The first grounding fixing portion 122 is fixed to the first insulating member 3. The width of the first grounding fixing portion 122 in the left-right direction is greater than the width of the first signal fixing portion 112. The first grounding fixing portion 122 of each first grounding terminal 12 further has an exposed section 1221 connected to the rear end of the first grounding contact portion 121 and an embedded section 1222 bent downward and extended from the rear end of the exposed section 1221. The exposed section 1221 is exposed downward outside the first insulating member 3. Furthermore, the exposed section 1221 of the first grounding terminal 12 includes a first portion 12211 and a second portion 12212; the first portion 12211 is in a long strip shape and extends in the front-to-back direction, and the second portion 12212 is convexly arranged on one side of the first portion 12211 in the left-right direction, and the second portion 12212 is used to be welded with the shielding sheet 2. The buried section 1222 is buried in the first insulating member 3, and a through hole 1223 is provided at the bent connection between the exposed section 1221 and the buried section 1222, which penetrates in the up-down direction. The provision of the through hole 1223 can facilitate the bending of the first grounding fixing portion 122, and can also prevent the first grounding fixing portion 122 from rebounding after bending. A first grounding inclined portion 123 is bent backward and extended obliquely from the lower end of the buried section 1222. The connection between the first grounding inclined portion 123 and the buried section 1222 is buried in the first insulating member 3, and a glue flow hole 124 is penetrated through the connection between the first grounding inclined portion 123 and the buried section 1222. The glue flow hole 124 can make the plastic glue of the first insulating member 3 flow more smoothly. The first grounding terminal 12 also has a first grounding welding portion 125 connected to the rear end of the first grounding inclined portion 123, and the first grounding welding portion 125 is used to weld with the circuit board. Two first grounding terminals 12 are respectively arranged on the left and right sides of a first differential pair S1 in the left and right directions, and the second parts 12212 of the two first grounding terminals 12 arranged on the left and right sides of the first differential pair S1 are both protruded toward the first signal fixing portion 112 of the first differential pair S1, and the second parts 12212 of the two first grounding terminals 12 are arranged opposite to each other in the left and right directions.

[0052] like Figure 1 , Figure 2 , Figure 5 , Figure 7 and Fig.10As shown, the shielding sheet 2 is in the shape of a horizontal plate, and the bottom surface of the shielding sheet 2 is provided with a convex portion 21 corresponding to the exposed section 1221 of the first grounding terminal 12 (in this embodiment, only two first grounding terminals 12 in a row of first terminals 1 are provided with a second portion 12212, and the shielding sheet 2 is also provided with two convex portions 21 only for the two second portions 12212 downwardly, and of course in other embodiments, the number of convex portions 21 may also be three, four, etc.), and the top surface of the shielding sheet 2 is formed with a recessed area 2 corresponding to the position of each convex portion 21 2, the lower surface of the convex portion 21 is used for laser welding with the second portion 12212 of the exposed section 1221, the recessed area 22 is exposed upward on the first insulating member 3, and the left and right sides of the shielding sheet 2 are respectively extended with a connecting portion 23 and a holding portion 24 located behind the connecting portion 23. When viewed from the left and right directions, the connecting portion 23 partially overlaps with the recessed area 22, so that when the convex portion 21 is stamped, the connecting portion overlapping with the recessed area 22 in the left and right directions will provide a corresponding connecting force to avoid the shielding sheet 2 from being offset when the convex portion 21 is stamped. The two connecting portions 23 are of different lengths in order to match the frame openings of the DP and HDMI connectors. The two connecting portions 23 are held on the first insulating member 3 and respectively expose the left and right sides of the first insulating member 3 and the outer insulating member 6. The holding portion 24 is inserted into the first insulating member 3 to increase the holding force between the shielding sheet 2 and the first insulating member 3.

[0053] like Figure 1 , Figure 2 , Figure 5 , Figure 7 and Fig.10 As shown, the first insulating member 3 has a first tongue portion 31 and a first base portion 32 extending backward from the first tongue portion 31. The front end of the first ground terminal 12 and the front end of the first signal terminal 11 both extend forwardly beyond the first tongue portion 31, and the lower surface of the first ground contact portion 121 and the lower surface of the first signal contact portion 111 are both exposed downwardly from the first tongue portion 31, and the exposed sections 1221 of the two first ground terminals 12 are exposed downwardly from the first base portion 32. The first signal inclined portion 113 and the first ground inclined portion 123 both extend from the lower surface of the first base portion 32 into the first insulating member 3, so that the first signal welding portion 114 and the first ground welding portion 125 can extend backwardly from the first insulating member 3.

[0054] like Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 8 and Fig. 9As shown, the second terminal module M2 has a plurality of second terminals 4 arranged in a row along the left-right direction, and a second insulating member 5 molded on the row of second terminals 4, and the second insulating member 5 covers the recessed area 22. The row of second terminals 4 includes a plurality of second signal terminals 41 and a plurality of second grounding terminals 42, and the first portion 12211 of the exposed section 1221 partially overlaps with the second signal terminal 41 when viewed from the top to the bottom, and the second portion 12212 is offset from the second signal terminal 41.

[0055] like Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 8 and Fig. 9 As shown, each second signal terminal 41 has a second signal contact portion 411 and a second signal fixing portion 412 extending backward and bending from the second signal contact portion 411. The second signal fixing portion 412 is fixed to the second insulating member 5, and the width of the second signal fixing portion 412 along the left-right direction is smaller than the width of the second signal contact portion 411. A second signal welding portion 413 extends from the lower end of each second signal fixing portion 412 and bends backward, and the second signal welding portion 413 is used to be welded with the circuit board. Two adjacent second signal terminals 41 form a second differential pair S2, and the two second signal fixing portions 412 of a second differential pair S2 further have deflection sections 4121 away from each other. The provision of the two deflection sections 4121 not only increases the distance between a portion of the two second signal fixing portions 412, but also increases the distance between the two second signal welding portions 413, thereby facilitating the first grounding welding portion 125 of the first grounding terminal 12 to extend between the two second signal welding portions 413.

[0056] like Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 8 and Fig. 9As shown, each second grounding terminal 42 has a second grounding contact portion 421 and a second grounding fixing portion 422 extending backward and bent from the second grounding contact portion 421, and the width of the second grounding fixing portion 422 in the left-right direction is greater than the width of the second signal fixing portion 412. The second grounding terminal 42 also has a second grounding soldering portion 423 connected to the rear end of the second grounding fixing portion 422, the second grounding soldering portion 423 is used to be soldered to the circuit board, and one second grounding soldering portion 423 is disposed between two first signal soldering portions 114 of a first differential pair S1 in the left-right direction, so that the soldering portions of a row of first terminals 1 and a row of second terminals 4 are arranged in a row in the left-right direction. The second grounding fixing portion 422 is fixed to the second insulating member 5, and each second grounding fixing portion 422 has a horizontal section 4221 connected to the rear end of the second grounding contact portion 421 and a vertical section 4222 extending downwardly from the horizontal section 4221. The horizontal section 4221 has a through hole 42211 extending from top to bottom, and a contact spring 42212 extending backward and bending downwardly from the front wall of the through hole 42211. The end of the contact spring 42212 close to the second grounding welding portion 423 is a free end, that is, the rear end of the contact spring 42212 is a free end, and the contact spring 42212 bent downward is used to contact the upper surface of the shielding sheet 2. A first hole 4223 is provided at the bent connection between the horizontal section 4221 and the vertical section 4222 of the second grounding fixing portion 422. The provision of the first hole 4223 can facilitate the bending of the second grounding fixing portion 422, and can also prevent the second grounding fixing portion 422 from rebounding after bending. The vertical section 4222 is buried in the outer insulating member 6. The vertical section 4222 is buried in the outer insulating member 6. A second hole 424 is penetrated by one side of the vertical section 4222 close to the second grounding welding portion 423 along the thickness direction of the second grounding terminal 42, and part of the plastic of the outer insulating member 6 enters the second hole 424. The setting of the second hole 424 can make the plastic flow of the outer insulating member 6 smoother.

[0057] like Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 8 and Fig. 9 As shown, the second insulating member 5 is used to be mutually clamped and fixed with the first insulating member 3, and the second insulating member 5 has a second tongue portion 51 and a second base portion 52 extending backward from the second tongue portion 51, the second grounding contact portion 421 and the second signal contact portion 411 both extend forwardly beyond the second tongue portion 51, and the second base portion 52 of the second insulating member 5 is concave from top to bottom with a material groove 521, the abutting spring piece 42212 is exposed in the material groove 521, and the second grounding welding portion 423 and the second signal welding portion 413 extend out of the second insulating member 5 for welding with the circuit board.

[0058] like Figure 1 , Figure 4 , Figure 5 , Figure 6 , Fig. 9 and Fig.10 As shown, the outer insulating member 6 is covered on the outer side of the first terminal module M1 and the second terminal module M2, and the outer insulating member 6 has a tongue plate 61 covered on the outer side of the first tongue portion 31 and the second tongue portion 51, and a base 62 covered on the outer side of the first base portion 32 and the second base portion 52. The first ground contact portion 121 and the first signal contact portion 111 are exposed downward on the lower surface of the tongue plate 61 for connecting with the docking connector; the second ground contact portion 421 and the second signal contact portion 411 are exposed upward on the upper surface of the tongue plate 61 for connecting with the docking connector. The lower surface of the base 62 of the outer insulating member 6 is recessed with a groove 621 corresponding to the exposed section 1221 of the plurality of first grounding terminals 12 (in the present embodiment, the number of the groove 621 is one, and of course the number of the grooves 621 may be two, three, etc. in other embodiments), and the lower surface of the exposed section 1221 is exposed in the groove 621, so that it is convenient for the laser to enter the groove 621 and irradiate the lower surface of the exposed section 1221, so that the exposed section 1221 is welded and fixed to the lower surface of the protrusion 21. The upper surface of the base 62 of the outer insulating component 6 is also provided with a recessed groove 622 corresponding to the material groove 521. The recessed groove 622 is located above the material groove 521 and is connected to the material groove 521. When viewed from top to bottom, the surrounding contours of the material groove 521 are exposed within the surrounding contours of the recessed groove 622. This can prevent the plastic of the outer insulating component 6 from flowing into the material groove 521, causing the abutting spring piece 42212 to be contaminated with plastic and thus affecting the abutting effect of the abutting spring piece 42212.

[0059] like Figures 13 to 16As shown, a second embodiment of the electrical connector 1000 is shown, which is different from the electrical connector 1000 of the first embodiment in that the remaining structures and connection relationships are the same: when viewed in the up-down direction, a second grounding terminal 42 partially overlaps with two first signal terminals 11 of a first differential pair S1, and in the left-right direction, the second grounding welding portion 423 is located between two first signal welding portions 114 of a first differential pair S1, when viewed in the up-down direction, the second grounding fixing portion 422 partially overlaps with two first signal fixing portions 112, and the left and right sides of the second grounding fixing portion 422 are folded back toward the turning sections 1131 of the corresponding two first signal inclined portions 113 to form two folded arms 4224, and the two folded arms 4224 are respectively shielded above the corresponding two turning sections 1131, and the folded arms 4224 of the second grounding terminal 42 are folded back toward the turning sections 1131 of the first signal inclined portions 113. The segment 1131 is extended, so that the distance between the inflected arm 4224 and the turning segment 1131 becomes smaller. The turning segment 1131 of the first signal terminal 11 will generate an induced electromagnetic field in the inflected arm 4224 of the second grounding terminal 42 during signal transmission, so that the two inflected arms 4224 are capacitively coupled with the two turning segments 1131 respectively. In other words, there is a capacitance between the inflected arm 4224 and the turning segment 1131 of the first signal terminal 11. Compared with the case where the inflected arm 4224 is not set, the capacitance of the turning segment 1131 of the first signal terminal 11 is increased, thereby offsetting the increased impedance due to the two turning segments 1131 of a first differential pair S1 being away from each other, so that the impedance of the first signal terminal 11 is matched, thereby optimizing the insertion loss (IL) and return loss (RL) of the electrical connector, improving the signal integrity performance of the electrical connector, and meeting the high-frequency and high-speed transmission requirements.

[0060] like Figures 1 to 12 As shown, the present invention also discloses a method for manufacturing an electrical connector 1000, comprising:

[0061] S1: providing a row of first terminals 1, wherein the row of first terminals 1 includes a first signal terminal 11 and a first grounding terminal 12; providing a metal plate, and punching the metal plate into a shielding sheet 2 having a convex portion 21 and a corresponding concave area 22; stacking the shielding sheet 2 on the row of first terminals 1 so that the lower surface of the convex portion 21 contacts the first grounding terminal 12, and then placing the stacked row of first terminals 1 and the shielding sheet 2 together into an injection mold, and injecting a first insulating member 3 to cover and fix the row of first terminals 1 and the shielding sheet 2 to form a first terminal module M1, wherein the exposed section 1221 of the first grounding terminal 12 is downwardly exposed to the first insulating member 3, and the concave area 22 of the shielding sheet 2 is upwardly exposed to the first insulating member 3;

[0062] S2: providing a row of second terminals 4, the row of second terminals 4 including second signal terminals 41 and second ground terminals 42; placing the row of second terminals 4 into an injection mold, and injecting a second insulating member 5 to cover and fix the row of second terminals 4 to form a second terminal module M2;

[0063] S3: stacking and assembling the second terminal module M2 on the top of the first terminal module M1 so that the second insulating member 5 covers the recessed area 22 and the first ground terminal 12 and the second signal terminal 41 partially overlap in the up-down direction;

[0064] S4: putting the assembled first terminal module M1 and second terminal module M2 into an injection mold together, and injecting an outer insulating member 6 to cover and fix the first terminal module M1 and second terminal module M2, wherein the outer insulating member 6 has a groove 621, and the lower surface of the exposed section 1221 is exposed in the groove 621;

[0065] S5: laser welding is performed on the lower surface of the exposed section 1221 exposed in the groove 621, so that the exposed section 1221 is welded and fixed to the welding surface of the protrusion 21 to obtain a semi-finished electrical connector;

[0066] S6: Provide a metal shell, and install the semi-finished electrical connector into the metal shell to obtain the electrical connector 1000.

[0067] Furthermore, the row of first terminals 1 in step S1 is also stamped from a metal plate, and the material of the metal plate for stamping the row of first terminals 1 is different from the material of the metal plate for stamping the shielding sheet 2; it can be understood that the row of first terminals 1 can be stamped first, or the shielding sheet 2 can be stamped first, and the stamping order of the row of first terminals 1 and the shielding sheet 2 is not restricted here, and it is ensured that the shielding sheet 2 can be stacked above the row of first terminals 1 so that the lower surface of the protrusion 21 contacts the first grounding terminal 12.

[0068] Furthermore, a row of first terminals 1 includes a plurality of first signal terminals 11 and a plurality of first grounding terminals 12, and the number of the first signal terminals 11 and the first grounding terminals 12 is not limited here. The number of the protrusions 21 on the shielding sheet 2 can also be one or more; when the number of the protrusions 21 is one, the protrusion 21 contacts one of the first grounding terminals 12; and when the number of the protrusions 21 is multiple, each protrusion 21 can contact each first grounding terminal 12 respectively, so that there are multiple contact points between the shielding sheet 2 and the row of first terminals 1, thereby improving the reliability of the connection between the shielding sheet 2 and the first grounding terminals 12 in the row of first terminals 1. It can be understood that when the number of the protrusions 21 is multiple, each protrusion 21 can also contact the same first grounding terminal 12; preferably, when the number of the protrusions 21 is multiple, each protrusion 21 contacts different first grounding terminals 12 respectively.

[0069] Furthermore, in step S2, a row of second terminals 4 includes a plurality of second signal terminals 41 and a plurality of second ground terminals 42, and a row of second terminals 4 is also stamped from a metal plate, and the material of the metal plate for stamping the row of second terminals 4 is the same as the material of the metal plate for stamping the row of first terminals 1; it can be understood that the row of second terminals 4 and the row of first terminals 1 can be stamped on the same metal plate. Furthermore, the order of step S1 and step S2 is not limited, that is, the first terminal module M1 can be processed first and then the second terminal module M2, or the second terminal module M2 can be processed first and then the first terminal module M1.

[0070] Furthermore, the injection molds for molding the first insulating part 3, the second insulating part 5 and the outer insulating part 6 are all arranged in the same injection molding station, so steps S1 to S4 can be implemented at the injection molding station. After the injection molding of the outer insulating part 6 is completed, it can be transferred to the welding station for laser welding. Only one transfer is required to complete the production of the electrical connector 1000, thereby improving the production efficiency of the electrical connector 1000.

[0071] Furthermore, since the second insulating member 5 covers the recessed area 22, in step S4, during the injection molding process of the outer insulating member 6, the second insulating member 5 can prevent the plastic of the outer insulating member 6 from flowing into the recessed area 22, thereby ensuring that in the welding process of the exposed section 1221 and the convex portion 21 in step S5, no plastic in the recessed area 22 is carbonized by the laser, thereby avoiding the short circuit between the first grounding terminal 12 and the second signal terminal 41 at the laser welding position, thereby improving the yield rate of the electrical connector 1000; and, precisely because the problem of the conduction between the first grounding terminal 12 and the second signal terminal 41 at the laser welding position is solved, the first insulating member 3, the second insulating member 5 and the outer insulating member 6 can be injection molded first, and laser welding can be performed after the injection molding process is completed, without the need for multiple transfers between the injection molding station and the welding station, and the electrical connector 1000 can be manufactured with only one transfer, thereby improving the manufacturing efficiency of the electrical connector 1000.

[0072] Furthermore, step S6 also includes: providing a support member 8 having a socket 81 extending through the front-to-back direction, inserting the bottom wall portion of the metal shell 7 into the socket 81 to install the support member 8 on the metal shell 7, and then installing the semi-finished electrical connector into the metal shell 7, the lower surface of the outer insulating member 6 in the semi-finished electrical connector being in contact with the upper surface of the support member 8, and positioning the installation position of the outer insulating member 6 by the portion of the support member 8 protruding into the metal shell 7. In this embodiment, an opening extending through the lower side of the metal shell 7 is provided on the lower side, and an insert extends backward from the front side in the opening, and the insert is correspondingly inserted into the socket 81 to install the support member 8 on the bottom wall of the metal shell 7.

[0073] In summary, the terminal module and the electrical connector 1000 of the present invention have the following beneficial effects:

[0074] (1) The first insulating member 3 in the first terminal module M1 is injection molded on a row of first terminals 1 and shielding sheet 2, the first grounding terminal 12 has an exposed section 1221 exposed downward outside the first insulating member 3, the bottom surface of the shielding sheet 2 is provided with a convex portion 21 corresponding to the exposed section 1221 of the first grounding terminal 12, and the top surface of the shielding sheet 2 forms a concave area 22 at a position corresponding to the convex portion 21, the lower surface of the convex portion 21 is in contact with the exposed section 1221, and the concave area 22 is exposed upward from the first insulating member 3, the second terminal module M2 is stacked on the first terminal module M1, and the exposed section 1221 of the first grounding terminal 12 partially overlaps with the second signal terminal 41 when viewed from the top to the bottom, and the second insulating member 5 covers the concave area 22; in this way, when the outer insulating member 5 is When the first terminal module M1 and the second terminal module M2 are injection molded by the outer insulating member 6, the second insulating member 5 can prevent the plastic of the outer insulating member 6 from entering the recessed area 22, thereby preventing the plastic from carbonizing and causing a short circuit when the exposed section 1221 and the lower surface of the protrusion 21 are laser welded, thereby improving the yield rate of the electrical connector. Moreover, because the exposed section 1221 and the lower surface of the protrusion 21 are welded after the first insulating member 3, the second insulating member 5 and the outer insulating member 6 are injection molded, the first insulating member 3, the second insulating member 5 and the outer insulating member 6 can be injection molded in the same injection molding station, which can simplify the manufacturing process of the electrical connector 1000 and save the manufacturing cost of the connector.

[0075] (2) When viewed from the top and bottom, the second portion 12212 is misaligned with the second signal terminal 41. Thus, when the second portion 12212 is welded to the lower surface of the protrusion 21, the laser directly irradiates the second portion, and does not irradiate the first portion overlapping the second signal terminal. This can prevent the first ground terminal 12, the shielding sheet 2, and the second signal terminal 41 from being short-circuited by the carbonized plastic. In addition, since the width of the first signal fixing portion 112 in the left-right direction is smaller than the width of the first signal contact portion 111, the first signal fixing portion 112 is narrower, which can cause the first ground terminal 12, the shielding sheet 2, and the second signal terminal 41 to be short-circuited by the carbonized plastic. The impedance of the signal fixing part 112 is relatively large, and the second parts 12212 of the two first grounding terminals 12 arranged on the left and right sides of the first differential pair S1 are both protruded toward the first signal fixing part 112 of the first differential pair S1; in this way, the impedance of the first signal fixing parts 112 of the two first signal terminals 11 can be reduced, and the second parts 12212 of the two first terminals 1 are both protruded toward the two first signal fixing parts 112 in the same first differential pair S1, so that the impedance matching of the two first signal fixing parts 112 in a first differential pair S1 can be ensured, which is beneficial to the transmission of high-frequency signals.

[0076] (3) The width of the first grounding fixing portion 122 in the left-right direction is greater than the width of the first signal fixing portion 112, and the first grounding fixing portion 122 has an exposed section 1221 connected to the rear end of the first grounding contact portion 121 and a buried section 1222 bent downward and extended from the exposed section 1221, the buried section 1222 is buried in the first insulating member 3, and a through hole 1223 penetrating in the up-down direction is provided at the bent connection between the exposed section 1221 and the buried section 1222. The provision of the through hole 1223 can reduce the rebound strength of the first grounding terminal 12 at the connection between the exposed section 1221 and the buried section 1222, thereby avoiding the problem that the rebound difference between the first grounding terminal 12 and the first signal terminal 11 is too large due to the inconsistency between the width of the first grounding fixing portion 122 and the width of the first signal fixing portion 112, thereby affecting the coplanarity of the first signal welding portion 114 and the first grounding welding portion 125.

[0077] (4) When viewed from the top and bottom directions, the second ground fixing portion 422 partially overlaps with the two first signal fixing portions 112, and two inverted arms 4224 are formed on the left and right sides of the second ground fixing portion 422 toward the turning sections 1131 of the corresponding two first signal inclined portions 113. The two inverted arms 4224 are respectively shielded above the corresponding two turning sections 1131, and extend toward the turning sections 1131 through the inverted arms 4224, so that the two inverted arms 4224 are capacitively coupled with the two turning sections 1131, that is, there is capacitance between the inverted arms 4224 and the turning sections 1131. Compared with the case where the inverted arms 4224 are not provided, the capacitance of the turning section 1131 is increased, thereby offsetting the impedance increased due to the two turning sections 1131 of a first differential pair S1 being away from each other, so that the impedance of the first signal terminal 11 is matched, thereby optimizing the insertion loss (IL) and return loss (RL) of the electrical connector, improving the signal integrity performance of the electrical connector, and meeting high-frequency and high-speed transmission requirements.

[0078] (5) The connection between the first grounding inclined portion 123 and the buried section 1222 is buried in the first insulating member 3, and the connection between the first grounding inclined portion 123 and the buried section 1222 is penetrated by a glue flow hole 124. The glue flow hole 124 can make the glue liquid pass through the glue flow hole 124 to better cover the row of first terminals 1 when the first insulating member 3 is injection molded, so as to improve the problem of incomplete mold when the first insulating member 3 is injection molded.

[0079] (6) A through hole 42211 is passed through the horizontal section 4221 of the second grounding fixing portion 422 from top to bottom. A contact spring sheet 42212 is bent backward and downward from the front wall of the through hole 42211. The end of the contact spring sheet 42212 close to the second grounding welding portion 423 is a free end, and the contact spring sheet 42212 is used to contact the upper surface of the shielding sheet 2. In this way, the force arm of the contact spring sheet 42212 is away from the second grounding welding portion 423, so as to prevent the second grounding welding portion 423 from being affected by the elastic force of the contact spring sheet 42212 and being displaced after the second grounding terminal 42 is reflowed at an over-high temperature, thereby causing the second grounding welding portion 423 to short-circuit with the first signal welding portion 114, or causing the second grounding welding portion 423 to shift upward or downward, thereby affecting the flatness of the welding portion of a row of first terminals 1 and a row of second terminals 4.

[0080] (7) The second insulating component 5 is provided with a recessed groove 521 from top to bottom, and the abutting spring piece 42212 is exposed in the recessed groove 521. The outer insulating component 6 is provided with a clearance groove 622 corresponding to the recessed groove 521. The clearance groove 622 is located above the recessed groove 521 and is connected to the recessed groove 521. When viewed from top to bottom, the surrounding contours of the recessed groove 521 are exposed within the surrounding contours of the clearance groove 622. In this way, when the outer insulating component 6 is injection-molded, since the surrounding contours of the recessed groove 521 are exposed within the surrounding contours of the clearance groove 622, the plastic of the outer insulating component 6 will not enter the recessed groove 521, thereby preventing the abutting spring piece 42212 from being stained with plastic, thereby affecting the elastic abutment effect between the abutting spring piece 42212 and the shielding sheet 2.

[0081] The above detailed description is only an explanation of the preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Therefore, all equivalent technical changes made by using the description and illustrations of this creation are included in the patent scope of this creation.

Claims

1. An electrical connector, characterized in that: include: A first terminal module, comprising a plurality of first terminals arranged in a row along a left-right direction, and a shielding sheet located above the row of first terminals, a first insulating member injection molded on the row of first terminals and the shielding sheet, and the row of first terminals comprises a first grounding terminal and a first signal terminal, the first grounding terminal has an exposed section downwardly exposed outside the first insulating member, a convex portion is convexly provided on the bottom surface of the shielding sheet corresponding to the exposed section of the first grounding terminal, a concave area is formed on the top surface of the shielding sheet at a position corresponding to the convex portion, the lower surface of the convex portion contacts the exposed section, and the concave area is upwardly exposed outside the first insulating member; A second terminal module is stacked on the first terminal module, the second terminal module has a plurality of second terminals arranged in a row along the left-right direction, and a second insulating member injection-molded on the row of second terminals, the row of second terminals includes a second grounding terminal and a second signal terminal, and the exposed section of the first grounding terminal overlaps with the second signal terminal in the up-down direction, and the second insulating member covers the upper part of the recessed area; An outer insulating member is injection molded to cover the first terminal module and the second terminal module. The second insulating member is used to prevent the plastic of the outer insulating member from entering the recessed area. The outer insulating member is provided with a groove corresponding to the exposed section of the first grounding terminal. The lower surface of the exposed section is exposed in the groove, which facilitates the laser to enter the groove and irradiate the lower surface of the exposed section, so that the exposed section is welded and fixed to the lower surface of the protrusion.

2. The electrical connector according to claim 1, wherein: The exposed section of the first ground terminal includes a first part and a second part. The first part overlaps with the second signal terminal part when viewed in the up-down direction. The second part is protruded on one side of the first part in the left-right direction. The second part is offset from the second signal terminal when viewed in the up-down direction, and the second part is welded to the lower surface of the protrusion.

3. The electrical connector according to claim 2, wherein: There are multiple first signal terminals and first ground terminals, two adjacent first signal terminals form a first differential pair, each first signal terminal has a first signal contact portion and a first signal fixing portion connected to the rear end of the first signal contact portion, the first signal fixing portion is fixed to the first insulating member, and the width of the first signal fixing portion along the left-right direction is smaller than the width of the first signal contact portion, and the second portions of the two first ground terminals arranged on the left and right sides of the first differential pair are both protruded toward the first signal fixing portion of the first differential pair.

4. The electrical connector according to claim 3, wherein: Each first grounding terminal has a first grounding contact portion and a first grounding fixing portion connected to the first grounding contact portion, the width of the first grounding fixing portion in the left-right direction is greater than the width of the first signal fixing portion, and the first grounding fixing portion has an exposed section connected to the rear end of the first grounding contact portion and an embedded section bent downward and extended from the exposed section, the embedded section is buried in the first insulating member, and a through hole penetrating along the up-down direction is provided at the bent connection between the exposed section and the embedded section.

5. The electrical connector according to claim 3, wherein: A first signal inclined portion extends backward and downward from the first signal fixed portion, a first signal welding portion extends from the rear end of the first signal inclined portion, the width dimension of the first signal welding portion in the left-right direction is smaller than the width dimension of the first signal fixed portion in the left-right direction, the two first signal inclined portions of a first differential pair have two turning sections away from each other, the second grounding terminal has a second grounding contact portion and a second grounding fixed portion extending backward and bent from the second grounding contact, the second grounding fixed portion partially overlaps with the two first signal fixed portions when viewed along the up-down direction, and the left and right sides of the second grounding fixed portion are folded back with two folded arms toward the turning sections of the corresponding two first signal inclined portions, and the two folded arms are respectively shielded above the corresponding two turning sections.

6. The electrical connector according to claim 1, wherein: The rear end of the exposed section of the first grounding terminal is bent and extended to form a buried section, and a first grounding inclined section is bent backward and extended obliquely from the buried section. The connection between the first grounding inclined section and the buried section is buried in the first insulating member, and a glue flow hole runs through the connection between the first grounding inclined section and the buried section.

7. The electrical connector according to claim 1, wherein: A connecting portion and a retaining portion located behind the connecting portion extend from the left and right sides of the shielding sheet respectively. The connecting portion and the recessed area partially overlap when viewed along the left and right directions, and the two connecting portions are of different lengths. The two connecting portions are retained on the first insulating member and are respectively exposed on the left and right sides of the first insulating member, and the retaining portion is inserted and fixed to the first insulating member.

8. The electrical connector according to claim 1, wherein: The second grounding terminal has a second grounding contact portion and a second grounding fixing portion extending backward and bent from the second grounding contact portion, and a second grounding welding portion extending from the lower end of the second grounding fixing portion and bent backward. The second grounding fixing portion has a horizontal section connected to the rear end of the second grounding contact portion and a vertical section extending and bent downward from the horizontal section. A through hole passes through the horizontal section from top to bottom. An abutting spring sheet is bent backward and downward from the front wall of the through hole. The end of the abutting spring sheet close to the second grounding welding portion is a free end, and the abutting spring sheet is used to abut against the upper surface of the shielding sheet.

9. The electrical connector according to claim 8, wherein: The second signal terminal has a second signal contact portion and a second signal fixing portion extending backward and bent from the second signal contact portion, the width of the second ground fixing portion in the left-right direction is greater than the width of the second signal fixing portion, and a first hole is penetrated at the bent connection between the horizontal section and the vertical section of the second ground fixing portion, the vertical section is buried in the external insulating member, and a second hole is penetrated along the thickness direction of the second ground terminal on one side of the vertical section close to the second ground welding portion, and part of the plastic of the external insulating member enters the second hole.

10. The electrical connector according to claim 8, wherein: The second insulating part is provided with a material cutting groove from top to bottom, and the abutting spring sheet is exposed in the material cutting groove. The outer insulating part is provided with a clearance groove corresponding to the material cutting groove. The clearance groove is located above the material cutting groove and is connected with the material cutting groove. When viewed from top to bottom, the surrounding contour of the material cutting groove is exposed within the surrounding contour of the clearance groove.

11. A method for manufacturing an electrical connector, characterized in that: The following steps are involved: A row of first terminals is provided, the row of first terminals including a first grounding terminal and a first signal terminal; a metal plate is provided, and the metal plate is punched into a shielding sheet having a convex portion and a corresponding concave area; the shielding sheet is stacked on the top of the row of first terminals so that the lower surface of the convex portion contacts the first grounding terminal, and then the stacked row of first terminals and the shielding sheet are put into an injection mold together, and a first injection-molded insulating member is used to cover and fix the row of first terminals and the shielding sheet to form a first terminal module, wherein the exposed section of the first grounding terminal is downwardly exposed to the first insulating member, and the concave area of ​​the shielding sheet is upwardly exposed to the first insulating member; Providing a row of second terminals, the row of second terminals including a second ground terminal and a second signal terminal; placing the row of second terminals into an injection mold, and injecting a second insulating member to cover and fix the row of second terminals to form a second terminal module; The second terminal module is stacked and assembled on the top of the first terminal module so that the second insulating member covers the recessed area and the first ground terminal and the second signal terminal partially overlap in the up-down direction; Putting the stacked and assembled first terminal module and the second terminal module into an injection mold together, injecting an outer insulating member to cover and fix the first terminal module and the second terminal module, wherein the outer insulating member has a groove, and the lower surface of the exposed section is exposed in the groove; Laser welding is performed on the lower surface of the exposed section exposed in the groove, so that the exposed section is welded and fixed to the welding surface of the protrusion to obtain a semi-finished electric connector; A metal shell is provided, and the semi-finished electric connector is installed in the metal shell to obtain the electric connector.

12. The method for manufacturing an electrical connector according to claim 11, characterized in that: The steps of providing a metal housing and installing the semi-finished electrical connector into the metal housing to obtain the electrical connector further include: A support member having a socket extending through the front-to-back direction is provided, the bottom wall of the metal shell is inserted into the socket to install the support member on the metal shell, and then the semi-finished electric connector is installed into the metal shell, and the lower surface of the outer insulating member in the semi-finished electric connector contacts the upper surface of the support member.

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