Forward and reverse plugging USB socket

Abstract

The invention relates to a forward and reverse plugging USB socket, which comprises a plug connector, a metal insert and a metal tail cover, wherein the metal insert and the metal tail cover are integrally formed in the plug connector; the plug connector comprises a first terminal group and a second terminal group which are arranged in an upper row and a lower row, a shielding plate arranged between the first terminal group and the second terminal group, a first shielding sheet and a second shielding sheet which are arranged on the outer sides of the first terminal group and the second terminal group, and a plug connector which connects the first terminal group, the second terminal group and the shielding plate. The first shielding sheet and the second shielding sheet are fixedly held into an integrated insulating body, and the insulating body comprises a base part, a wrapping part formed by forward extension from the base part, and a butt joint tongue part formed by forward extension from the wrapping part; each of the first shielding sheet and the second shielding sheet comprises a lap joint part exposed on the surface of the wrapping part and a spot welding part formed by extending backwards from the lap joint part, and the metal tail cover covers the rear part of the base part and is connected with the spot welding part of the first shielding sheet into a whole; and the spot welding part of the second shielding sheet is integrally connected with the metal insert in the base part. The forward and reverse plugging USB socket has good shielding performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electrical connectors, and particularly to a reversible USB socket. BACKGROUND

[0002] The USB Type C interface is widely used in various industries for charging and high-speed data transmission. According to the standard specification of the association, the physical carrier of the interface is a Type C plug and socket, which supports the plug and socket in the forward and reverse directions. This solves the problem of easy damage when the previous Micro USB is inserted in the wrong direction. The socket structure of Type C defines two rows of symmetrical conductive terminal groups, a metal middle plate between the conductive terminal groups, an insulating body that holds the two rows of conductive terminal groups and the metal middle plate together, and a metal ring that is set in the middle position of the insulating body. The metal ring serves to reinforce the assembled insulating body and to contact the spring of the plug to conduct ground to serve as a shield. As disclosed in the applicant's patent with application number 201420479369.0, the retaining member. Subsequently, with the difference in actual application scenarios, while maintaining compatibility, the metal ring is cancelled. For example, in high-end application fields, waterproofing is required. The insulating body is designed using an in-mold injection molding method, and there is no need for reinforcement to prevent the upper and lower parts from splitting. Setting the metal ring is not conducive to waterproof design and affects waterproof performance. Cancelling the metal ring can overcome the above defects, but it is inevitable to lose some shielding performance, which may affect high-frequency signal transmission. After the evolution of Type C interface to USB4.0, the high-frequency transmission performance requirement is further improved. How to combine waterproof performance and metal shielding performance has become a technical problem to be solved. SUMMARY

[0003] In view of this, it is necessary to provide a reversible USB socket with good shielding performance.

[0004] To solve the above technical problems, the application provides a positive and negative plug-in USB socket, which comprises a plug-in part, a metal insert integrally formed in the plug-in part, and a metal tail cover. The plug-in part comprises a first terminal group and a second terminal group arranged in two rows from top to bottom, a shielding plate arranged between the first terminal group and the second terminal group, a first shielding sheet and a second shielding sheet arranged outside the first terminal group and the second terminal group, and an insulating body for integrally holding the first terminal group, the second terminal group, the shielding plate, the first shielding sheet, and the second shielding sheet. The insulating body comprises a base, a wrapping part extending forward from the base, and a butt joint tongue part extending forward from the wrapping part. The first shielding sheet and the second shielding sheet each comprise a lap joint part exposed on the surface of the wrapping part and a spot welding part extending backward from the lap joint part. The metal tail cover is arranged behind the base and is integrally connected with the spot welding part of the first shielding sheet. The spot welding part of the second shielding sheet is integrally connected with the metal insert in the base.

[0005] Preferably, the first shielding sheet and the second shielding sheet further comprise a connecting part connecting the spot welding part and the lap joint part. The rear end of the connecting part is bent outward at the position of the base to form a bending part and is connected with the spot welding part, so that the spot welding part protrudes outward compared with the lap joint part. The metal insert is formed in the base of the insulating body. The metal insert comprises a main body part crossing the base and located inside the spot welding part of the second shielding sheet. The spot welding part of the second shielding sheet and the main body part are fixed together by welding. The insulating body further comprises a tail part located behind the base and covered by the metal tail cover. The spot welding part of the first shielding sheet extends to the tail part. The metal tail cover is arranged on the tail part and is in contact with the spot welding part of the first shielding sheet for welding.

[0006] Preferably, the first shielding sheet and the second shielding sheet further comprise a connecting part connecting the spot welding part and the lap joint part. The first shielding sheet and the metal tail cover are integrally formed by stamping. The spot welding part of the first shielding sheet is directly connected to the front end surface of the metal tail cover. The second shielding sheet and the metal insert are integrally formed by stamping. The spot welding part of the second shielding sheet is the main body part of the metal insert, and the two parts are combined into one.

[0007] Preferably, the thickness of the first shielding sheet is smaller than the thickness of the metal tail cover, and the thickness of the second shielding sheet is smaller than the thickness of the metal insert. Specifically, before stamping the sheet, the front end part of the sheet is first pressed to a predetermined size.

[0008] Preferably, the metal insert further comprises ears extending out of the insulating body from both lateral sides of the main body portion, the metal tail cover comprises ears extending out of the base portion from both lateral sides forward, the ears of the metal tail cover are welded together to form an integral part after being stacked together with the ears of the metal insert.

[0009] Preferably, the outer diameter of the base portion is larger than the outer diameter of the wrapping portion, the outer diameter of the wrapping portion is larger than the outer diameter of the docking tongue portion, a partition portion is formed between the base portion and the tail portion, the first terminal set is injection molded to form a first terminal module, the first terminal module comprises the first terminal set and a first insulating body holding the first terminal set together, the second terminal set and the shielding plate are injection molded to form a second terminal module, the second terminal module comprises the second terminal set, the shielding plate and a second insulating body, the first shielding sheet and the second shielding sheet are assembled on the first insulating body and the second insulating body and then injection molded to form a third insulating body, the first insulating body, the second insulating body and the third insulating body constitute the insulating body; each conductive terminal of the first terminal set and the second terminal set comprises a contact portion exposed to the upper and lower surfaces of the docking tongue portion, a wrapped portion embedded in the insulating body formed by extending backward from the contact portion, and a soldering leg extending out of the insulating body backward from the wrapped portion.

[0010] Preferably, the first terminal set and the second terminal set respectively comprise a pair of grounding terminals located at the outermost side, two pairs of high-frequency terminals located inside the pair of grounding terminals, a pair of power terminals located inside the two pairs of high-frequency terminals, and two pairs of signal terminals located between the pair of power terminals, the shielding plate is located between the high-frequency terminals of the first terminal set and the second terminal set for shielding, the shielding plate further exposes to the outside surface of the docking tongue portion by outwardly extending beyond the grounding terminals at the front end, the thickness of the grounding terminals and the power terminals is greater than the thickness of the high-frequency terminals and the signal terminals.

[0011] Preferably, the first insulating body and the second insulating body comprise a front bearing portion and a rear bearing portion located at the rear side of the front bearing portion, the outer surface of the rear bearing portion protrudes from the outer surface of the front bearing portion, the front bearing portion corresponds to the wrapping portion, the rear bearing portion corresponds to the rear bearing portion, and the lap portion extends in the lateral direction and its surface is exposed to the outer surface of the wrapping portion.

[0012] Preferably, the front end of the lap portion extends forward to form a plurality of extension contacts, the inner surface of both ends of the lap portion is thinned to form a thinned end portion, and the outer surface of the lap portion is at the same level as the outer surface of the wrapping portion.

[0013] Preferably, the thinned end portion is located outside the high-frequency terminals and shields the high-frequency terminals.

[0014] The USB socket of the application is provided with a first shielding sheet and a second shielding sheet on the upper and lower sides of the insulating body, so that the overlapping part of the shielding sheet is electrically connected with the wrapping part and the mating plug, and the plug and the socket are electrically connected with the metal shell and the shielding sheet through spot welding, so as to form a grounding path and provide better shielding performance. BRIEF DESCRIPTION OF DRAWINGS

[0015] 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 embodiments of the application and serve to explain the principles of the application, and do not limit the application. In the drawings:

[0016] Embodiment One

[0017] Figure 1 A perspective view of the USB socket of embodiment one welded on a printed circuit board;

[0018] Figure 2 A perspective view of the USB socket of embodiment one;

[0019] Figure 3 A perspective exploded view of the USB socket of embodiment one;

[0020] Figure 4 An exploded view of the first terminal module and the second terminal module of the USB socket of embodiment one;

[0021] Figure 5 A sectional view along the A-A line shown in the drawing; Figure 2

[0022] Figure 6 A perspective view of the shielding sheet of the USB socket of embodiment one;

[0023] Figure 7 A perspective view of the shielding sheet of the USB socket of embodiment one from another angle;

[0024] Figure 8 A perspective view of the shielding sheet of the USB socket of embodiment one assembled on the first terminal module and the second terminal module;

[0025] Figure 9 A front view of the metal shell of the USB socket of embodiment one;

[0026] Figure 10 A rear view of the metal shell of the USB socket of embodiment one;

[0027] Figure 11 A rear view of the metal shell of the USB socket of embodiment one;​

[0028] Figure 12 This is a diagram showing the combination of the shielding plate and the metal casing of the reversible USB socket in Embodiment 1;

[0029] Figure 13 For along Figure 2 The cross-sectional view shown by the dashed line BB.

[0030] Example 2

[0031] Figure 14 This is a cross-sectional view of the reversible USB socket in Embodiment 2.

[0032] Explanation of reference numerals in the attached figures

[0033] Printed Circuit Board - 10; Opening - 11; Soldering Protrusion - 12; Metal Housing - 20; Frame - 21; Front Recess - 211; Through Hole - 22; Front Baffle Protrusion - 221; Soldering Protrusion - 23; Ear - 24; Fixing Hole - 241; Extended Tail - 25; Side Plate - 251; Lower Support - 252; Soldering Part - 253; Conductive Terminal - 30; First Terminal Group - 30a; Second Terminal Group - 30b; Grounding Terminal - 301; High Frequency Terminal - 302; Power Terminal - 303; Signal Terminal - 304; Contact Part - 31; Encased Part - 32; Solder Foot - 33; Shielding Plate - 34; Insulating Body - 40; Base Part-401; Blocking protrusion-4011; Wrapping part-402; Butt joint tongue-403; Tail part-404; Partition part-405; First insulator-41; Front bearing part-411; Rear bearing part-412; Weld leg holding part-413; Slot-414; Second insulator-42; Third insulator-43; Waterproof adhesive-50; Sealing ring-60; Shielding sheet-70; Overlap part-71; Extension contact-711; Thinned end-712; Connecting part-72; Bending part-721; Spot weld part-73; Main body part-731; Spot weld area-732; Insertion part-733; Notch-734; Connector-A.

[0034] First shielding plate - 701; Second shielding plate - 702; Metal insert - 202; Metal tail cap - 201. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them.

[0036] This application is based on Figure 1 The X direction is the horizontal direction, the Y direction is the vertical direction in front, and the Z direction is the vertical direction above.

[0037] Example 1

[0038] Please refer to Embodiment 1 of this application. Figures 1 to 13 As shown in the accompanying drawings, the structure and technical principle of the high-frequency transmission USB socket of this embodiment will be described in detail.

[0039] This application describes a high-frequency transmission USB socket with a Type-C USB interface, which combines excellent waterproof performance and high-frequency signal shielding performance to prevent interference with the transmission of high-frequency signals.

[0040] Please see Figure 1 As shown, the high-frequency transmission USB socket of this application is soldered onto a printed circuit board 10. The edge of the printed circuit board 10 has a notch 11, which is used to accommodate an object (not shown) inserted thereto for fixing the USB socket. This object may be a protruding part of the outer frame of an electronic device, etc. The object has at least one locking hole on each of its two lateral sides for fixing the USB socket. A welding protrusion 12 protrudes forward from the middle of the notch 11, and the USB socket is soldered to the welding protrusion 12 to communicate with the printed circuit board 10. Solder holes 121 are provided on both lateral sides of the welding protrusion 12.

[0041] Please continue reading. Figures 2 to 5 As shown, the high-frequency transmission USB socket in this embodiment includes a connector A, a metal shell 20 sleeved on the connector A, and a sealing ring 60 disposed on the front edge of the metal shell 20. The metal shell 20 is made of powder metallurgy or manufactured by stamping process.

[0042] The connector A includes conductive terminals 30 arranged in two rows, a shielding plate 34 and a shielding sheet 70 disposed between the two rows of conductive terminals 30, and an insulating body 40 that holds the shielding plate 34, the shielding sheet 70 and the conductive terminals 30 together. The insulating body 40 includes a base 401, a wrapping portion 402 extending forward from the base 401, a mating tongue 403 extending forward from the wrapping portion 402, a tail portion 404 located behind the base 401, and a partition portion 405 formed between the base 401 and the tail 404. The outer diameter of the wrapping portion 402 is smaller than the outer diameter of the base 401 and larger than the outer diameter of the mating tongue 403.

[0043] The conductive terminal 30 includes a first terminal module and a second terminal module arranged in two rows. The first terminal module includes a first terminal group 30a, a first insulator 41 for holding the first terminal group 30a as a whole, and a shielding sheet 70 arranged on the first insulator 41. The second terminal module includes a second terminal group 30b, a shielding plate 34, a second insulator 42 for holding the second terminal group 30b and the shielding plate 34 as a whole, and a shielding sheet 70 arranged on the second insulator 42.

[0044] The first terminal group 30a and the second terminal group 30b each include a pair of ground terminals 301 located at the outermost side in the lateral direction, two pairs of high-frequency terminals 302 located inside the pair of ground terminals 301, a pair of power terminals 303 located inside the two pairs of high-frequency terminals 302, and two pairs of signal terminals 304 located between the pair of power terminals 303. In a specific implementation, the high-frequency terminals 302 and the signal terminals 304 of the first terminal group 30a and the second terminal group 30b are isolated from each other and cannot be in electrical contact with each other, and the high-frequency terminals 302 in the two rows are also isolated by the shielding plate 34 to avoid crosstalk or interference between the high-frequency terminals 302 in the two rows. The thickness and width of the ground terminals 301 and the power terminals 303 can be increased to allow the ground terminals 301 in the upper row to contact the ground terminals in the lower row and the power terminals 303 in the upper row to contact the power terminals 303 in the lower row (see FIG. 6) to utilize the limited space. Figure 5 The shielding plate 34 is only located between the high-frequency terminals 302 in the two rows without occupying the space between the ground terminals 301 in the two rows and the power terminals 303 in the two rows. For a specific design scheme, refer to the patent No. 201811145442.X applied by the applicant in 2018, which will not be described here.

[0045] The outer surface of the first insulator 41 and the second insulator 42 comprises a front bearing part 411 corresponding to the position of the wrapping part 402 of the insulating body 40, a rear bearing part 412 corresponding to the position of the base part 401, and a solder leg holding part 413 corresponding to the position of the tail part 404. The rear bearing part 412 and the solder leg holding part 413 are disconnected and connected as a whole only by the first terminal group 30a or the second terminal group 30b. The rear bearing part 412 is recessed inwardly on both sides in the horizontal direction to form a clamping groove 414. In other embodiments, the clamping groove 414 can also be provided on other positions of the front bearing part 411 or the rear bearing part 412. The horizontal position of the front bearing part 411 is more inward than that of the rear bearing part 412, so that the surface of the rear bearing part 412 protrudes out of the surface of the front bearing part 411.

[0046] Please continue to refer to Figure 6 、 Figure 7 As shown in FIG. 7, the shielding sheet 70 comprises an overlapping part 71 extending in the horizontal direction, a connecting part 72 extending rearward from the overlapping part 71, and a spot welding part 73 connected to the rear end of the connecting part 72 and extending in the horizontal direction. The horizontal position of the spot welding part 73 protrudes outward more than that of the overlapping part 71, i.e., the horizontal position of the spot welding part 73 on both sides is higher or lower than that of the overlapping part 71. Specifically, the rear end of the connecting part 72 forms an outward bending part 721 to realize the difference in the horizontal position between the overlapping part 71 and the spot welding part 73.

[0047] The overlapping portion 71 extends in the lateral direction and has a front end protruding forward, and a plurality of extension contacts 711 are formed on the front end. The number of the extension contacts 711 can be determined according to the number of the contact springs in the corresponding USB plug. Preferably, the extension contacts 711 include three extension contacts formed on the front end of the middle and both ends in the lateral direction, respectively. The inner side surfaces of both ends of the overlapping portion 71 are thinned to form thin end portions 712, and the inner side surfaces of the thin end portions 712 are concave outward. The connecting portion 72 extends rearward from the rear end of the overlapping portion 71 in the plug-in direction, and the connecting portion 72 includes at least one strip structure. When the connecting portion 72 includes a plurality of strip structures, the strip structures are independent of each other, and gaps or cavities exist between adjacent strip structures. The spot welding portion 73 extends in the lateral direction, and the front end of the spot welding portion 73 is connected to the bent portion 721 of the connecting portion 72 integrally. A notch 734 is arranged at the connection between the spot welding portion 73 and the bent portion 721, and the projection of the bent portion 721 in the vertical direction is at least partially located in the notch 734, so as to facilitate the wrapping of the bent portion 721 in the subsequent injection molding process. The middle part of the spot welding portion 73 is outwardly punched to form a slightly convex spot welding area 732, and the outer surface of the spot welding area 732 is convex outwardly relative to the surface of the remaining part of the spot welding portion 73. The hooks 733 are formed by inwardly bending the both ends of the spot welding portion 73. In other embodiments, the hooks 733 can be formed by tearing the remaining part of the spot welding portion inwardly, and the hooks 733 can also be arranged on the overlapping portion 71 or the connecting portion 72.

[0048] Please continue to refer to Figures 3 to 8 as shown, please refer to Figure 4 , Figure 5 , Figure 8 as shown, two shielding sheets 70 are assembled on the first insulator 41 and the second insulator 42, respectively. Specifically, the overlapping portion 71 and the connecting portion 72 are supported on the surface of the front bearing portion 411, and the spot welding portion 73 is supported on the surface of the rear bearing portion 412. The hooks 733 on both sides are inserted into the clamping grooves 414 at both ends of the rear bearing portion 412 to be fixed. In other embodiments, the hooks 733 and the clamping grooves 414 can be arranged at other positions. As described above, the hooks 733 can also be arranged on other regions of the spot welding portion 73 or on the connecting portion 72 and the overlapping portion 71. However, due to the space utilization problem, the arrangement of the hooks 733 on the spot welding portion 73 is still the optimal arrangement scheme.

[0049] Please refer to Figure 3As shown, after the shielding sheet 70 is assembled on the first and second insulators 41 and 42 respectively, the first and second terminal modules are stacked together, and then a third insulator 43 is formed by injection molding again, and the first, second and third insulators 41, 42 and 43 together constitute the insulating body 40. In other embodiments, the first and second insulators 41 and 42 can also be the same component, i.e., the three injection molding in the first embodiment is changed to two injection molding.

[0050] The third insulator 43 holds and combines the first and second insulators 41 and 42 together, and finally forms the base 401, the wrapping part 402, the butt tongue part 403, the tail part 404 and the partition part 405. The injection molding method belongs to a commonly used technology, and has been disclosed in many patents applied by the applicant, which will not be described here. It should be noted that the rear end of the base 401 is also provided with a continuous or discontinuous ring of blocking protrusions 4011 protruding along the radial periphery, and the outer diameter of the blocking protrusions 4011 is greater than the outer diameter of the base 401.

[0051] At this time, the surface of the overlapping part 71 and the partial connecting part 72 of the shielding sheet 70 is exposed to the surface of the wrapping part 402, and the extension contact 711 of the overlapping part 71 has a long distance in the plug-in direction to facilitate electrical contact with the contact spring of the butt plug. The spot welding part 73 and the bending part 721 are fixed by the base 401, wherein the spot welding area 732 is exposed to the outer surface of the base 401, and other parts except the spot welding area 732 are wrapped by the base 401.

[0052] Please continue to refer to Figures 9 to 11 As shown, the metal shell 20 includes a frame 21 provided with a through hole 22, ear parts 24 extending from the lateral sides of the frame 21, extension tail parts 25 extending from the rear end of the frame 21, and welding tabs 23 extending forward from the upper and lower sides of the front end of the frame 21.

[0053] The front end of the frame 21 is recessed to form a front recess 211, and the sealing ring 60 is mounted or molded in the front recess 211 of the front end of the frame 21.

[0054] The front end inner diameter of the through hole 22 is smaller than the inner diameter of the rear end of the through hole 22 and forms a front stop protrusion 221. The welding tabs 23 are formed by extending forward from the front end edges of the upper and lower sides of the frame body 21. The welding tabs 23 are first bent towards the other side from the front end edges of the upper and lower sides of the frame body 21 and then extend horizontally forward to form. The distance between a pair of the welding tabs 23 is smaller than the distance between the inner wall surfaces of the upper and lower sides of the frame body 21.

[0055] The ear portions 24 are formed by extending from the lateral outer sides of the frame body 21 and are provided with fixing holes 241 for locking on an object inserted into the break 11 of the printed circuit board 10. The extension tail portions 25 include side plates 251 formed by extending rearward from the lateral side walls of the frame body 21, lower support portions 252 formed by protruding towards the opposite inner sides from the bottom sides of the side plates 251, and welding portions 253 formed by extending downward from the bottom surfaces of the side plates 251.

[0056] Please continue to refer to Figures 8 to 13 as shown, please refer to Figure 12 , Figure 13 As shown, the plug A is inserted into the through hole 22 of the metal shell 20 from rear to front. The stop protrusion 4011 of the rear end edge of the base portion 41 of the insulating body 40 abuts against the front stop protrusion 221 of the front end edge of the through hole 22 of the metal shell 20 to limit the terminal position of the forward insertion of the plug A into the metal shell 20. At this time, the welding tabs 23 are tightly attached to the spot welding areas 732 of the shielding sheet 70 and are fixed and conducted by spot welding process. The through hole 22 of the frame body 21 is mainly located at the periphery of the partition portion 405. When the waterproof glue 70 is injected into the partition portion 405, the waterproof glue 70 fills the partition portion 405 to achieve the waterproof of the USB socket itself. The inner wall surface of the frame body 21 can be used as a container for the waterproof glue 70 to prevent the overflow of the waterproof glue 70 and simultaneously achieve the waterproof partition through the inner wall surface of the through hole 22. When the USB socket of the present application is assembled into an electronic device, the sealing ring 60 is used to abut against the outer frame of the electronic device to achieve the waterproof at the joint of the USB socket and the electronic device.

[0057] The present embodiment realizes the grounding conduction of the plug and the socket by the shielding sheet 70 conducting the shell of the plug and the welding of the shielding sheet 70 conducting the metal shell 20 of the USB socket to achieve good shielding performance.

[0058] Embodiment Two

[0059] Please refer to Figure 14 As shown, the cross-sectional view of the second embodiment of the present application is shown. Compared with the first embodiment, the second embodiment is different in that:

[0060] The metal shell 20 is cancelled and replaced by a metal insert 202 and a metal tail cover 201. The shielding sheet 70 is replaced by a first shielding sheet 701 and a second shielding sheet 702 with inconsistent upper and lower structures.

[0061] Specifically, because the metal shell 20 is cancelled, in order to realize the grounding conduction of the shielding sheet and the socket shell, it is impossible to symmetrically arrange the upper and lower shielding sheets, and the second embodiment proposes a feasible solution to the above technical problems.

[0062] The first shielding sheet 701 is located on the upper side, and the second shielding sheet 702 is located on the lower side. Specifically, the first shielding sheet 701 and the second shielding sheet 702 both include the overlapping portion 71, the connecting portion 72, and the spot welding portion 73. The structure of the second shielding sheet 702 is basically the same as that of the shielding sheet 70 in the first embodiment, except that the connecting portion 72 of the first shielding sheet 701 passes through the base portion 401, crosses the partition portion 405, and extends to the position of the tail portion 404, and the spot welding portion 73 extends from the connecting portion 72 to the upper surface of the tail portion 404. The connecting portion 72 still adopts a strip-shaped structure to facilitate the flow of plastic during injection molding. Neither the first shielding sheet 701 nor the second shielding sheet 702 is exposed to the outer surface of the base portion 401, but is embedded in the plastic of the base portion 401.

[0063] The structure and fixing method of the metal insert 202 are the same as those of the metal reinforcing member in the patent No. 202210652078.6 applied by the applicant in 2022, including the main body portion 2021 crossing the base portion 401 and the ear portion (not shown) extending to the lateral outside of the base portion 401, except that the main body portion 2021 of the metal insert 202 is located on the inner side of the spot welding portion 73 of the second shielding sheet 702 and is tightly integrated with the spot welding portion 73. Before injection molding of the third insulator 43, the metal insert 202 and the second shielding sheet 702 are pre-welded together, or the metal insert 202 and the second shielding sheet 702 are integrally stamped and formed. Here, the spot welding process can be omitted to save costs. If the materials of the metal insert 202 and the second shielding sheet 702 are the same, this technical solution is the preferred solution, and it can save the vertical space of the overlapping portion and improve the space utilization.

[0064] The metal tail cover 201 has one function of shielding the conductive terminal 30 located in the tail portion 404, and the other function of extending to form a welding portion welded on the printed circuit board 10 to fix the USB socket, which is similar to the shielding member disclosed in the shielding plug tail shielding member of the patent application No. 201810877483.1 applied by the applicant in 2018, except that the metal tail cover 201 in the embodiment also needs to be improved to bear part of the function of the removed metal shell 20, the difference lies in that the metal tail cover 201 of the present application extends forward to the position of the base portion 401 on the transverse two sides and is bent to form an ear portion, the ear portion of the metal tail cover 201 is stacked together with the ear portion of the metal insert 202 and is spot welded to form the final ear portion, and the final ear portion is used to be fixed on the object to fix the USB socket of the present application. The spot welding portion 73 of the first shielding sheet 701 is located in the metal tail cover 201 and is spot welded together, and in other embodiments, the first shielding sheet 701 and the metal tail cover 201 are integrally formed by stamping, and the reason and principle of the second shielding sheet 702 and the metal insert 202 being integrally formed are the same.

[0065] The second embodiment realizes the shielding scheme of the metal shell-free USB socket product by the first shielding sheet 701 and the second shielding sheet 702 conducting the contact spring sheet of the plug, and then connecting to the metal insert 202 and the metal tail cover 201.

[0066] The technical features of the above embodiments can be combined arbitrarily, and in order to make the description simple, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0067] The above embodiments only express the preferred embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A reversible USB socket, comprising a plug-in part, a metal insert integrally formed in the plug-in part, and a metal tail cover, the plug-in part comprising a first terminal group and a second terminal group arranged in upper and lower rows, a shielding plate arranged between the first terminal group and the second terminal group, a first shielding sheet and a second shielding sheet arranged outside the first terminal group and the second terminal group, and an insulating body for integrally holding the first terminal group, the second terminal group, the shielding plate, the first shielding sheet, and the second shielding sheet, the insulating body comprising a base portion, a wrapping portion forwardly extending from the base portion, and a mating tongue portion forwardly extending from the wrapping portion, characterized in that, The first shielding sheet and the second shielding sheet each include a lap portion exposed to a surface of the package portion and a spot-welded portion extending rearward from the lap portion, the metal tail cover is arranged rearward of the base portion and is connected integrally with the spot-welded portion of the first shielding sheet, and the spot-welded portion of the second shielding sheet is connected integrally with the metal insert in the base portion.

2. The reversible USB receptacle of claim 1, wherein, The first shielding sheet and the second shielding sheet further include a connecting portion connecting the spot-welded portion and the lap portion, a rear end of the connecting portion is bent outward at a position of the base portion to form a bent portion and is connected to the spot-welded portion, the spot-welded portion protrudes outward compared to the lap portion, the metal insert is formed in the base portion of the insulating body, the metal insert includes a main body portion extending across the base portion and located inward of the spot-welded portion of the second shielding sheet, the spot-welded portion of the second shielding sheet and the main body portion are welded and fixed together, the insulating body further includes a tail portion located rearward of the base portion and arranged by the metal tail cover, the spot-welded portion of the first shielding sheet extends to the tail portion, and the metal tail cover is arranged on the tail portion and is in contact with the spot-welded portion of the first shielding sheet.

3. The reversible USB receptacle of claim 1, wherein, The first shielding sheet and the second shielding sheet further include a connecting portion connecting the spot-welded portion and the lap portion, the first shielding sheet and the metal tail cover are integrally formed by stamping, the spot-welded portion of the first shielding sheet is directly connected to a front end surface of the metal tail cover, the second shielding sheet and the metal insert are integrally formed by stamping, and the spot-welded portion of the second shielding sheet is the main body portion of the metal insert.

4. The reversible USB receptacle of claim 3, wherein, The thickness of the first shielding sheet is less than the thickness of the metal tail cover, and the thickness of the second shielding sheet is less than the thickness of the metal insert, specifically, before the plate is stamped, a front end portion of the plate is first thinned to a predetermined size.

5. The reversible USB receptacle of claim 2 or 3, wherein, The metal insert further includes ear portions extending outward from both sides of the main body portion, and the metal tail cover includes ear portions extending forward from both sides of the main body portion to the outside of the base portion, the ear portions of the metal tail cover and the ear portions of the metal insert are welded and fixed together after being stacked together.

6. The reversible USB receptacle of claim 5, wherein, The outer diameter of the base is greater than the outer diameter of the wrapping part, the outer diameter of the wrapping part is greater than the outer diameter of the docking tongue part, a partition part is formed between the base and the tail part, the first terminal group is injection molded into a first terminal module, the first terminal module includes the first terminal group and a first insulator that holds the first terminal group as a whole, the second terminal group and the shielding plate are injection molded into a second terminal module, the second terminal module includes the second terminal group, the shielding plate, and a second insulator, the first shielding sheet and the second shielding sheet are assembled on the first insulator and the second insulator and then injection molded to form a third insulator, and the first insulator, the second insulator, and the third insulator constitute the insulating body; each conductive terminal of the first terminal group and the second terminal group includes a contact part exposed to the upper and lower surfaces of the docking tongue part, a wrapped part embedded in the insulating body formed by extending backward from the contact part, and a solder leg extending out of the insulating body from the wrapped part.

7. The reversible USB receptacle of claim 6, wherein, The first terminal group and the second terminal group each include a pair of grounding terminals located at the outermost side, two pairs of high-frequency terminals located inside the pair of grounding terminals, a pair of power supply terminals located inside the two pairs of high-frequency terminals, and two pairs of signal terminals located between the pair of power supply terminals, the shielding plate is located between the high-frequency terminals of the first terminal group and the second terminal group for shielding, the shielding plate further exposes the outside surface of the docking tongue part outside the grounding terminals at the front end, and the thickness of the grounding terminals and the power supply terminals is greater than the thickness of the high-frequency terminals and the signal terminals.

8. The reversible USB receptacle of claim 7, wherein, The first insulator and the second insulator include a front bearing part and a rear bearing part located at the rear side of the front bearing part, the outer surface of the rear bearing part protrudes from the outer surface of the front bearing part, the front bearing part corresponds to the wrapping part, the rear bearing part corresponds to the rear bearing part, and the lapping part extends in the transverse direction and the surface is exposed to the outer surface of the wrapping part.

9. The reversible USB receptacle of claim 8, wherein, The front end of the lapping part extends to form a plurality of extension contacts, the inner surfaces of the two ends of the lapping part are thinned to form a thinned end part, and the outer surface of the lapping part is at the same level as the outer surface of the wrapping part.

10. The reversible USB receptacle of claim 9, wherein, The thinned end part is located outside the high-frequency terminals and shields the high-frequency terminals.

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