CN112825395A

CN112825395A - Positive reverse plug USB socket

Info

Publication number: CN112825395A
Application number: CN201911142256.5A
Authority: CN
Inventors: 陈小硕; 陆苏; 田刚; 张秀华
Original assignee: Shenzhen Everwin Precision Technology Co Ltd
Current assignee: Dongguan Nuo Meng Electronics Co ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2021-05-21
Anticipated expiration: 2039-11-20
Also published as: CN112825395B

Abstract

The utility model provides a positive reverse plug USB socket, includes the metal medium plate, is located respectively the first, second terminal group of metal medium plate both sides and general the metal medium plate with first, second terminal group is the insulator as an organic whole constitutively, first, second terminal group includes ground terminal, high frequency signal terminal, power supply terminal, conventional signal terminal, power supply terminal, high frequency signal terminal and ground terminal respectively in proper order in the transverse direction, ground terminal is greater than with the thickness of power supply terminal high frequency signal terminal and conventional signal terminal's thickness, and is the same row ground terminal stamping forming is as an organic whole and gilding, and is the same row power supply terminal stamping forming is as an organic whole and plates rhodium ruthenium, and is the same row conventional signal terminal and high frequency signal terminal stamping forming are as an organic whole and plate rhodium ruthenium. This application is compromise high frequency and heavy current transmission, and the cost is lower relatively.

Description

Positive reverse plug USB socket

Technical Field

The present application relates to the field of electrical connectors, and more particularly, to a USB socket with a positive and negative plug.

Background

The existing USB3.1 Type C socket generally includes a middle plate, and a first terminal set and a second terminal set respectively disposed on the upper and lower sides of the middle plate. In the standards of the association, the standard for power transmission is only 2A, and the current smart phone basically needs to be charged with large current, so that the standard structure cannot meet the market requirement. And several different kinds of high current versions have been developed, i.e., the middle portion of the midplane is cut away, leaving the outer portions of the midplane directly in contact with the ground terminals for grounding. The structure sacrifices the high-frequency transmission performance of the socket, and because the shielding of the middle plate is lost among high-frequency signals, the high-frequency transmission cannot be realized. In addition, for transmission of high frequency signals, the ground terminal is required to be not connected to the midplane but grounded. The high-frequency large-current socket applied by the republic of china 201821600514.0 solves the technical problems, but after the middle plate extends backwards, the space between the welding leg of the high-frequency signal terminal of the first terminal group and the welding leg of the high-frequency signal terminal of the second terminal group cannot be shielded, and the high-frequency performance cannot be effectively improved; at present, the requirement on the signal transmission performance of each terminal group is higher, part of the conductive terminals require to be electroplated with noble metal rhodium ruthenium, the cost is limited, and the part of the conductive terminals only need to be electroplated with noble metal gold, and the thickness of the terminals is different, so that new requirements are provided for the structure and the manufacturing process; the USB socket disclosed in the patent application No. 201720630490.2 of the people's republic of China is provided with a front section and a rear section on an insulating body, and water resistance is realized by injecting glue into a section difference space, but when glue is injected at the rear end of the insulating body, air bubbles are possibly caused due to the fact that gas cannot be smoothly discharged, and the water resistance is poor.

Disclosure of Invention

Therefore, it is desirable to provide a reversible USB socket that supports high frequency transmission, carries large current for charging, and has a relatively low cost.

For solving above-mentioned technical problem, the application provides a positive reverse plug USB socket, include the metal medium plate, be located respectively the first of metal medium plate both sides, second terminal group and with the metal medium plate with first, second terminal group is the insulator as an organic whole constitutively, first, second terminal group includes ground terminal, high frequency signal terminal, power supply terminal, conventional signal terminal, power supply terminal, high frequency signal terminal and ground terminal respectively in proper order in the transverse direction, the thickness of ground terminal and power supply terminal is greater than the thickness of high frequency signal terminal and conventional signal terminal, and one row with the ground terminal stamping forming is as an organic whole and the gilding, one row with the power supply terminal stamping forming is as an organic whole and the ruthenium plating, one row with the conventional signal terminal and high frequency signal stamping forming are as an organic whole and the ruthenium plating, the ground terminal of gilding, The power supply terminal of rhodium-plated ruthenium and the conventional signal terminal and high-frequency signal terminal of rhodium-plated ruthenium are combined in the lateral direction into the first or second terminal group.

Preferably, the gold-plated ground terminal, the power terminal of the rhodium-plated ruthenium, and the high-frequency signal terminal of the rhodium-plated ruthenium are respectively connected with the conventional signal terminal by three groups of material belts after punch forming, and when the three groups of material belts are combined, the three groups of material belts are superposed, combined and positioned.

Preferably, the metal middle plate is punched and formed separately and is connected with a middle plate material belt, and the middle plate material belt is fixed with the material belt of the second terminal group in an overlapping manner.

Preferably, at least one of the three sets of tapes of the first terminal set is fixed together by riveting, and at least one of the three sets of tapes of the second terminal set is fixed together with the middle plate tape by riveting.

Preferably, at least a part of the three sets of material belts of the first and second terminal groups and the material belt of the metal middle plate are bent, so that when the material belts are stacked, at least one side surfaces of the ground terminal, the power terminal, the high-frequency signal terminal and the conventional signal terminal are coplanar.

Preferably, each of the conductive terminals of the first and second terminal sets includes a contact portion, a holding portion extending rearward from the contact portion, and a solder tail extending out of the insulating body from the holding portion, the thicknesses of the ground terminal and the power terminal are greater than the thicknesses of the high-frequency signal terminal and the conventional signal terminal, the metal middle plate includes a main plate portion located between the high-frequency signal terminals and a protruding portion extending outward from the front end of the main plate portion in the lateral direction, and a vertical projection of the rear end edge of the main plate portion is located between the solder tail of the high-frequency signal terminal of the first terminal set and the solder tail of the high-frequency signal terminal of the second terminal set.

Preferably, the insulation body includes a first insulator integrally formed by injection molding of the first terminal group, a second insulator integrally formed by molding of the second terminal group and the metal middle plate, and a third insulator integrally formed by molding of the first and second insulators, the first and second terminal groups are respectively located at the upper and lower sides of the metal middle plate, and the solder tails of the second terminal group are located behind the first terminal group.

Preferably, the rear end of the holding portion of the first terminal group is bent downward and then extends in parallel to form a bent portion, the rear end of the main plate portion of the metal middle plate is bent downward at a position corresponding to the bent portion of the first terminal group to form a sinking portion, and the rear end edge of the sinking portion is located between the solder legs of the high-frequency signal terminals of the first and second terminal groups on the vertical projection plane.

Preferably, two flow holes are formed in the sinking portion of the metal middle plate, the insulation body comprises a base portion, a butt joint tongue portion formed by extending the base portion forward and a tail portion formed at the rear end of the base portion, a filling space is formed between the base portion and the tail portion, and the sinking portion at the position of the flow hole is exposed in the filling space.

Preferably, the ground terminal is formed with a groove structure at a position corresponding to the protruding portion so as to avoid the protruding portion and prevent the middle plate from contacting the ground terminal, the sinking portion extends laterally outward to form an extending portion extending outward, and the extending portion passes through between the ground terminals of the first and second terminal groups and extends out of the insulating body to connect the material strap.

Compared with the prior art, the grounding terminal of the same row is formed by punching and plated with gold independently, the power supply terminal of the same row is formed by punching and plated with rhodium and ruthenium independently, the high-frequency signal terminal of the same row and the conventional signal terminal are formed by punching and plated with rhodium and ruthenium independently, the problem that the signal terminal and the power supply terminal need to be plated with precious metal rhodium and ruthenium to improve the performances of high frequency, ageing resistance and current transmission is solved, and the grounding terminal only needs to be plated with gold to reduce the cost; and the thickness of the power supply terminal is larger than that of the signal terminal, so that the problem that the power supply terminal and the signal terminal cannot be simultaneously subjected to punch forming is solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a perspective assembly view of a front-to-back USB socket according to the present application;

FIG. 2 is an exploded perspective view of the front-to-back USB socket of the present application;

FIG. 3 is a perspective view of the plug member of the present application for positively and negatively plugging the USB socket;

FIG. 4 is an exploded perspective view of the plug member of the present application for positively and negatively plugging the USB socket;

fig. 5 is a perspective view of the second terminal set, the metal middle plate and the second insulator of the front-back plug USB socket of the present application formed as a whole;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 7 is a perspective view of a metal middle plate of the present application with USB sockets plugged in both sides;

FIG. 8 is a top view of the first terminal set of the positive-negative-insertion USB socket of the present application;

fig. 9 is a top view of the first and second terminal sets and the metal middle plate of the front-back plug USB socket of the present application;

fig. 10 is a top view of the first terminal set and the metal middle plate of the front-back plug USB socket of the present application;

fig. 11 is a left side view of the first and second terminal sets and the metal middle plate of the USB socket of the present application;

FIG. 12 is a cross-sectional view taken along line B-B of FIG. 9;

FIG. 13 is a perspective view of the USB receptacle of the present application inserted forwardly and backwardly at a second angle;

FIG. 14 is a perspective view of the USB receptacle of the present application inserted in a third angle;

fig. 15 is a perspective view of the power terminal connection material strap of the second terminal group of the forward and reverse plug USB socket of the present application;

fig. 16 is a perspective view of the connecting material belt for the conventional signal terminal and the high-frequency signal terminal of the second terminal set of the forward-backward-insertion USB socket according to the present application;

fig. 17 is a perspective view of the grounding terminal connecting material strap of the second terminal set of the positive and negative insertion USB socket of the present application;

FIG. 18 is a perspective view of the second terminal set of the front-to-back USB socket of the present application when connected to the carrier tape and stacked together for injection molding;

FIG. 19 is a perspective view of the second terminal set of the front-to-back USB socket of the present application after a portion of the carrier tape is cut away after injection molding;

fig. 20 is a perspective view of the first terminal group and the metal middle plate connecting the material strap of the positive and negative plug-in USB socket of the present application, which are combined together for injection molding;

fig. 21 is a perspective view of the second terminal set of the front-back plug-in USB socket according to the present application after a portion of the material strap is cut away after injection molding;

FIG. 22 is a perspective view of the first and second terminal sets of the reversible USB receptacle of the present application assembled together after injection molding and ready for injection molding again;

fig. 23 is a perspective view of the front and back plug-in USB socket according to the present invention, after injection molding, the tape is connected thereto.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments.

Referring to fig. 1 to 4, 13 and 14, the front-back plug USB socket of the present application includes a plug a, a drawing shell 50 sleeved outside the plug a,

fixed shells

71 and 72 fixed outside the drawing shell 50, a waterproof ring 30 disposed on an outer edge of the drawing shell 50, and a metal ring 60 sleeved outside the plug a and welded to the drawing shell 50.

The metal ring 60 is manufactured by a drawing process, the metal ring 60 includes an annular main body 61, and a wall portion 62 formed at a front end of the annular main body 61, and the wall portion 62 is perpendicular to the annular main body 51.

The fixed casing includes a first fixed casing 71 and a second fixed casing 72 clamped on the upper and lower sides of the drawing casing 50. The first fixing shell 71 comprises a first fixing portion 711, first ear portions 712 formed by extending the two transverse sides of the first fixing portion 711, a shielding portion 714 formed by extending the rear end of the first fixing portion 711 and covering the tail of the plug connector A, and a window 715 arranged between the shielding cloth 714 and the first fixing portion 711. The first fixing portion 711 further includes a side wrapping portion 713 formed to extend laterally outward and wrap a rear end of each of the two lateral sides of the plug connector a, and the shielding plate 714 is formed to be bent vertically downward from a rear end of the side wrapping portion 713.

The second fixing case 72 includes a second fixing portion 721, and a second ear portion 722 extending from both lateral sides of the second fixing portion 721 and welded and fixed to the first ear portion 712. A supporting boss 723 is formed at the front end of the surface of the second ear portion 722 in a protruding manner, a buckling piece 724 is formed by extending the rear end of the second ear portion 722 inwards, and the first fixing shell 71 and the second fixing shell 72 are fixed with the upper surface and the lower surface of the drawing shell 50 in a spot welding manner respectively.

As shown in fig. 4 to 12, the plug connector a includes a middle metal plate 40, first and

second terminal sets

20 and 30 respectively located at upper and lower sides of the middle metal plate 40, and an insulating body 10 integrally formed by the middle metal plate 40 and the first and

second terminal sets

20 and 30.

The insulating body 10 includes a first insulator 11 formed by integrally preforming the first terminal group 20, a second insulator 12 formed by integrally preforming the second terminal group 30 and the middle metal plate 40, and a third insulator 13 formed by integrally molding the first insulator 11 and the second insulator 12. The third insulator 13 includes a base 131, a butt tongue 132 formed extending forward from the base 131, and a tail 133 located at the rear end of the base 131 and completely isolated from the base 131. The outer diameter of the base 131 is greater than the outer diameter of the docking tongue 132, and the upper and lower surfaces of the base 131 are provided with the ribs 134, the annular main body 61 of the metal ring 60 is sleeved outside the base 131, the ribs 134 enable the metal ring 60 and the base 131 to be tightly fixed without loosening, and the wall 62 abuts against the front end edge of the base 131 to prevent the plug connector a from moving forward to limit the plug connector a. The first, second and

second insulators

11, 12 and 13 each include a base portion 131 and a tail portion 133, and a filling space 135 is formed between the base portion 131 and the tail portion 133. The first, second and

third insulators

11, 12 and 13 are connected to the base portion 131 and the tail portion 133 through the first and

second terminal sets

20 and 30 exposed in the filling space and the metal middle plate 40. A passage 136 is formed at an upper side of the tail portion 133 of the third insulator 13 corresponding to the window 715 of the first fixing shell 71 to facilitate injection of glue into the filling space 135 through the window 715 and the passage 136.

The bottom surface of the tail portion 133 of the third insulator 13 is further provided with a fastening groove 138 for fastening the fastening piece 724, and the fastening piece 724 and the fastening groove 138 limit the plug connector a to retreat backwards.

The first and second terminal sets 20, 30 include, in order from left to right or from right to left, a

ground terminal

201, 301, a high-

frequency signal terminal

202, 302, a

power supply terminal

203, 303, a

normal signal terminal

204, 304, a

power supply terminal

203, 303, a high-

frequency signal terminal

202, 302, and a

ground terminal

201, 301.

The terminal thickness of the

grounding terminals

201 and 301 and the terminal thickness of the

power supply terminals

203 and 303 are 0.2mm or 0.25 mm; the terminal thickness of the

conventional signal terminals

204, 304 and the high-

frequency signal terminals

202, 302 is 0.12 mm; this helps to carry a greater current.

Each of the conductive terminals of the first and second terminal sets 20, 30 includes a contact portion 21, 31 exposed on the upper and lower surfaces of the mating tongue 132, a holding

portion

22, 32 extending rearward from the contact portion 21, 31, and a

solder leg

23, 33 extending rearward from the holding

portion

22, 32 and outside the insulating housing 10.

The holding

portions

22, 32 of the first or second terminal sets 20, 30 are bent upward at the base 131 of the insulative housing 10 to form a bent portion 221, so that the distance between the portions of the holding

portions

22, 32 of the first and second terminal sets 20, 30 located behind the bent portion 221 is increased. In an embodiment, the holding

portions

22, 32 of the first and second terminal sets 20, 30 may be bent and extended oppositely to increase the distance between the holding

portions

22, 32.

Referring to fig. 7 with emphasis, the portion of the metal middle plate 40 between the

power terminals

203, 303 and the

conventional signal terminals

204, 304 is completely cut off, thereby forming two independent middle plate structures on the left and right. Each of the individual intermediate metal plates 40 includes a main plate portion 41 extending in the insertion/removal direction, a protruding portion 42 extending laterally outward from the front end of the main plate portion 41, a depressed portion 44 formed at the rear end of the main plate portion 41, and a welded portion 47 extending from the depressed portion 44. The front end edge of the main plate portion 41 is thinned to form a thinned portion 411, and the thinned portion 411 can be bent to avoid the front end edge of the high-

frequency signal terminal

202, 302 to leave a space.

The depressed portion 44 is formed by bending downward from the main plate 41 and extending, thereby forming an inclined portion 43. The transverse width of the sinking portion 44 is greater than that of the main board portion 41, two circulation holes 45 are formed in the sinking portion 44, the sinking portion 44 extends transversely outward to form an extending portion 46, and the transverse outer side of the extending portion 46 is used for connecting the material belt so as to facilitate production automation. The welding portion 47 is formed extending from the rear end of the extension portion 46. A locking groove 421 for locking with a plug (not shown) is formed at the outer edge of the protrusion 42, and a through hole 422 is formed on the protrusion 42 for allowing plastic to flow so as to fix the metal middle plate 40. The position of the inclined portion 43 corresponds to the position of the bending portion 221 of the first or second terminal set 20, 30, the bending portion 221 is formed by bending the first terminal set 20 downwards at the position of the holding portion 22, and the inclined portion 43 is formed by bending downwards from the main board portion 41 to avoid contact with the bending portion 221. The flow holes 45 are not closed outside of the one hole structure inside to minimize the space occupied by the sink 44 at the location of the flow holes 45. The sinking portion 44 at the position of the flow hole 45 is exposed to the filling space 135. The sinking portion 44 is adopted to bend at least one conductive terminal 20, so that the gap between the fixing

portions

22 and 23 at the position of the filling space 135 and the sinking portion 44 is increased, meanwhile, the arrangement of the circulation hole 45 can also increase the gap, thereby facilitating glue injection, enhancing the fluidity of glue, and preventing poor water resistance caused by the fact that the filling space 135 cannot be completely filled with the glue.

As shown in fig. 6, the first and

second insulators

11 and 12 are stacked to form an air gap 137 penetrating in the inserting and extracting direction, when the third insulator 13 is injection molded, plastic does not fill the air gap 137, when glue 81 is injected from the window 175 during glue injection, the glue 81 extrudes air in the filling space 135, most of the air is discharged from the exposed portion of the outer periphery of the filling space 135, but if the tail portion 133 is located on one side of the filling space 135 and is closed, the space is extremely small, air bubbles may be formed inside the tail portion 133, and the air gap 137 may enable the air to be discharged from the filling space 135 backwards to ensure that the glue fills the filling space 135.

Referring to fig. 9 to 12, the main plate 41 and the sinking portion 44 are disposed between the high-

frequency signal terminals

202, 302 of the first and second terminal sets 20, 30 to shield the interference between the high-frequency signals between the two rows of high-

frequency signal terminals

202, 302.

The holding

portions

22, 32 of the first or second terminal sets 20, 30 are bent and extended away from each other such that there is a sufficient distance between the holding

portions

22, 32 to allow the desired lateral outer side of the sinking portion 44 to extend and connect the carrier tape.

In an embodiment, the middle metal plate 40 is not provided with the sunken part 44, and the sunken part 44 is only a part of the main plate part 41, that is, the main plate part 41 and the sunken part 44 are located on the same horizontal plane. And the holding

portions

22, 32 of the first and second terminal sets 20, 30 are formed by bending and extending in a direction away from each other, so that a space for the metal middle plate 40 to extend transversely is reserved for the distance between the holding

portions

22, 32 of the first and second terminal sets 20, 30.

Referring to fig. 4 and 5, the front end of the

ground terminal

201, 301 is thinned to form a

slot structure

2011, 3011 towards the position of the protruding portion 42, so that the protruding portion 42 extends laterally outward beyond the position of the

ground terminal

201, 301 without contacting the ground terminal. While the sinker 44 is already at a sufficient distance to allow the sinker 44 to extend laterally.

Referring to fig. 7 and 8, except for the position where the protrusion 42 of the metal middle plate 40 extends outward to pass through the

slot structure

2011, 3011 of the

ground terminals

201, 301, the metal middle plate 40 is not present between the

ground terminals

201, 301 of the first and second terminal sets 20, 30, so that the

ground terminals

201, 301 may be thickened to 0.19 mm-0.21 mm or 0.24 mm-0.26 mm to carry larger current. The metal middle plate 40 is not arranged between the

power terminals

203, 303 of the first and second

terminal groups

20, 30, and the

power terminals

203, 303 can also be thickened to 0.19 mm-0.21 mm or 0.24 mm-0.26 mm to bear larger current.

The

conventional signal terminals

204, 304 transmit the conventional signal therebetween without shielding the conventional signal between the first and second terminal sets 20, 30, i.e. there is no metal midplane 40 between the

conventional signal terminals

204, 304.

As shown in fig. 11 and 12, the

solder fillets

23 and 33 of the first and second terminal sets 20 and 30 are respectively arranged in two rows in the inserting and extracting direction, the solder fillet 33 of the second terminal set 30 located at the upper side is located behind the solder fillet 23 of the first terminal set 20, and the rear end edge of the sinking portion 44 is located between the solder fillet 33 of the second terminal set 33 and the solder fillet 23 of the first terminal set 20 or is flush with the rear end edge of the solder fillet 23 of the first terminal set 20 in the vertical projection direction. Thus, the main plate portion 41 and the sinking portion 44 are completely isolated from the high-

frequency signal terminals

202, 302, and include the

solder fillets

23, 33 extending backward, so that the high-frequency transmission performance can be effectively improved.

Compared with the prior art, the metal middle plate 40 cannot shield the upper and lower rows of

solder fillets

23, 33 of the first and second terminal sets 20, 30, and thus the high frequency performance is reduced. In the prior art, the middle metal plate 40 and the first terminal set 20 located in the lower row are integrally injection-molded, so that the rear end of the sinking portion 44 needs to be coated, and the solder tails 23 of the first terminal set 20 need to be exposed, so that the solder tails 23 of the first terminal set 20 cannot be shielded.

Referring to fig. 15 to 23, a method for manufacturing a USB socket with a positive and negative insertion according to the present application is described in detail, which includes the following steps:

s10, stamping the

ground terminals

201, 301, the signal terminals (including the high-

frequency signal terminals

202, 302 and the regular signal terminals 203, 303) and the

power terminals

203, 303 of the first and second terminal sets 20, 30 respectively; simultaneously, punch forming the metal middle plate 40;

in this step, two terminals of the

ground terminals

201 and 301 are respectively connected to the front end and the rear end of the first front material belt 2011 and the first rear material belt 2012; the front end and the rear end of the signal terminals are respectively connected with a second front material belt 2021 and a second rear material belt 2022; the front end and the rear end of the

power terminals

203, 303 are connected with a third front material belt 2031 and a third rear material belt 2032. The metal middle plate 40 is connected with a middle plate material belt 401, the middle plate material belt 401 extends through the lateral outer side of the extending portion 46 to form a first connecting portion 402, and a second connecting portion 403 connected with the middle plate material belt 401 is arranged at the front end of the main body plate portion 41.

A space for accommodating the

power supply terminal

203, 303 is provided between the

normal signal terminal

204, 304 and the high-

frequency signal terminal

202, 302, and the

ground terminals

201, 301 are respectively located on both lateral sides of the high-

frequency signal terminal

202, 302. The rear ends of the holding

parts

22, 32 of the

ground terminals

201, 301 extend laterally outward to form

tape connecting parts

2013, 2014, and the first rear tape 2012 is connected by the

tape connecting parts

2013, 2014; the tape connecting portion includes a first extension portion 2013 extending outwardly from the lateral outer side of the holding

portion

22, 32 and a second extension portion 2014 extending rearwardly from the end of the first extension portion 2013 and linking with the first rear tape 2012. The

tape connecting parts

2013, 2014 are designed to have enough space for accommodating the

power terminals

203, 303 and the tape connecting parts at the rear ends of the signal terminals. The thickness of the

ground terminals

201, 301 and the

power terminals

203, 303 is larger than the thickness of the

signal terminals

202, 302, 204, 304.

S20, electroplating the

power terminals

203 and 303 and the signal terminals respectively, wherein the electroplated layer comprises rhodium ruthenium; electroplating the

grounding terminals

201 and 301, wherein the electroplated layer comprises gold;

in this step, the

power terminals

203, 303 and the signal terminals have higher requirements for transmission capability, and require noble metal rhodium ruthenium with better electroplating performance, and the

power terminals

203, 303 and the signal terminals may be electroplated separately or simultaneously; the

ground terminals

201 and 301 have lower requirements for signal or current transmission capability, and only noble metal gold is plated.

S30, stacking the ground terminal 201, the power terminal 203, and the

signal terminals

202 and 204 of the first terminal group 20 together, and electroplating to form the first insulator 11; the second insulator 12 is injection molded by dropping the ground terminal 301, the power terminal 303, the

signal terminals

302 and 304 of the second terminal group 30 and the metal middle plate 40 together;

when the first insulator 11 is molded, the second front material belt 2021 and the third front material belt 2031 are overlapped together, and the first front material belt 2011 is located at the periphery of the second front material belt 2021 and the third front material belt 2031; the first to third

back material belts

2012, 2022, 2032 are overlapped together and fixed, and in order to accurately overlap the ground terminal 201, the power terminal 203 and the signal terminal, a plurality of riveting holes are arranged in the first to third

back material belts

2012, 2022, 2032 and riveted into a whole for injection molding. When the second insulator 12 is molded, the metal intermediate plate 40 and the second terminal group 30 may be fixed together. When the material belts are required to be overlapped during injection molding, the grounding terminal, the power supply terminal and the signal terminal can still keep a preset plane position when the material belts are required to be bent and overlapped.

S40, cutting off the first to third

front tapes

2011, 2021, 2031 and the second and

third back tapes

2022, 2032 of the first terminal set 20; the first to third front tape strips 3011, 3021, 3031 and the first to third rear tape strips 3021, 3022, 3023 of the second terminal group 30 are cut off, and the second connecting portions 403 of the middle boards 401 are cut off at the same time.

S50, overlapping and fixing the first terminal set 20 and the first insulator 11 thereof with the second terminal set 30, the metal middle plate 40 and the second insulator 12 thereof, and injection molding again to form the third insulator 13;

the surface of the second insulator 12 close to the first insulator 11 is provided with a supporting boss 121 and a terminal groove 122, and the conductive terminals of the first terminal set 20 are positioned and limited in the supporting boss 121 and the terminal groove 122.

In this step, the first rear material strap 2012 is cut off, and neither the first extension portion 2013 nor the second extension portion 2014 is cut off and molded in the first and/or third insulators 13.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A positive and negative USB socket, comprising a metal middle plate, first and second terminal groups respectively located on both sides of the metal middle plate, and a type of the metal middle plate and the first and second terminals. It is an integral insulating body, and the first and second terminal groups respectively include a ground terminal, a high-frequency signal terminal, a power terminal, a conventional signal terminal, a power terminal, a high-frequency signal terminal and a ground terminal in sequence in the lateral direction. The thicknesses of the ground terminals and the power terminals are greater than the thicknesses of the high-frequency signal terminals and the conventional signal terminals, the ground terminals in the same row are stamped and formed into one piece and plated with gold, and the power terminals in the same row are stamped into one piece. And rhodium-plated ruthenium, the conventional signal terminals and high-frequency signal terminals in the same row are stamped into one body and plated with rhodium-ruthenium, the gold-plated ground terminals, the rhodium-plated ruthenium-plated power terminals, and the rhodium-plated ruthenium-plated conventional signal terminals are integrated with the high-frequency signal terminals. The frequency signal terminals are combined into the first or second terminal group in the lateral direction.

2. The USB socket as claimed in claim 1, wherein the gold-plated ground terminal, the rhodium-plated ruthenium-plated power supply terminal, the rhodium-plated ruthenium-plated high-frequency signal terminal and the conventional signal terminal are formed by stamping and forming. The three groups of material belts are connected separately. When combined, the three groups of material belts are superimposed and combined for positioning.

3 . The front and rear USB socket according to claim 2 , wherein the metal middle plate is stamped and formed separately and is connected with a middle plate material strip, the middle plate material strip and the material of the second terminal group. 4 . With overlay fixed.

4. The reversible USB socket according to claim 2 or 3, wherein at least one of the three groups of material tapes of the first terminal group is fixed together by riveting, and the second terminal group is At least one of the three groups of material strips is riveted to the middle sheet material strip.

5 . The USB socket of claim 4 , wherein the three groups of material strips of the first and second terminal groups and the material strips of the metal middle plate are at least partially bent, so that the material strips are superimposed. 6 . At least one side surface of the ground terminal, the power terminal, the high-frequency signal terminal and the conventional signal terminal is coplanar.

6 . The reversible USB socket according to claim 1 , wherein each conductive terminal of the first and second terminal groups comprises a contact portion and a holding portion extending backward from the contact portion. 7 . and the solder pins extending out of the insulating body from the holding portion, the thicknesses of the ground terminals and the power terminals are greater than those of the high-frequency signal terminals and the conventional signal terminals, and the metal middle plate includes The main body plate portion between the signal terminals and the protruding portion extending laterally outward from the front end of the main body plate portion, the vertical projection of the rear edge of the main body plate portion is located at the high-frequency signal terminals of the first terminal group between the solder pins of the second terminal group and the solder pins of the high-frequency signal terminals of the second terminal group.

7 . The reversible USB socket according to claim 6 , wherein the insulating body comprises a first insulator formed by injection molding the first terminal group, the second terminal group and the metal A second insulator formed as a whole by the plate and a third insulator formed by forming the first and second insulators as a whole, the first and second terminal groups are respectively located on the lower and upper sides of the metal middle plate, the The solder pins of the second terminal group are located behind the first terminal group.

8 . The USB receptacle of claim 7 , wherein the rear end of the holding portion of the first terminal group is bent downward and then extends in parallel to form a bent portion, and the metal middle plate has a bent portion. 9 . The rear end of the main body plate is bent downward at the position corresponding to the bending portion of the first terminal group to form a sunk portion, and the rear end edge of the sunk portion is located on the first and second sides on the vertical projection plane. Between the solder pins of the high-frequency signal terminals of the terminal group.

9 . The reversible USB socket according to claim 8 , wherein the sinking portion of the metal middle plate is provided with two flow holes, and the insulating body comprises a base portion extending forward from the base portion. 10 . The formed butting tongue and the tail formed at the rear end of the base, a filling space is formed between the base and the tail, and the sinking part at the position of the flow hole is exposed in the filling space.

10 . The reversible USB socket of claim 9 , wherein the ground terminal is pressed into a groove structure corresponding to the position of the protruding portion to avoid the protruding portion so that the middle plate does not contact the middle plate. 11 . a ground terminal, the sinking portion extends laterally outward to form an extension portion extending outward, and the extension portion extends out of the insulating body to connect between the ground terminals of the first and second terminal groups Strip.