High-frequency transmission USB socket

Abstract

A high-frequency transmission USB socket comprises a plug connector and a metal shell arranged on the periphery of the plug connector in a sleeving mode, the plug connector comprises a plurality of conductive terminals, an insulation body and a shielding piece, and the conductive terminals are fixedly held into a whole through the insulation body and the shielding piece. The insulation 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. The surface of the lap joint part is exposed out of the surface of the wrapping part, the lap joint part extends backwards to form the connecting part, the rear end of the connecting part is bent outwards and then extends in the transverse direction to form the spot welding part, and at least part of the spot welding part is in overlapped contact conduction with the metal shell. The high-frequency transmission USB socket provided by the utility model has relatively good shielding performance.

Description

Technical Field

[0001] The present application relates to the field of electrical connectors, and in particular to a high-frequency transmission USB socket. Background Art

[0002] The USB Type C interface is widely used in various industries for charging and high-speed data transmission. According to the association's standard specifications, the physical carrier of the interface is a Type C plug and socket, which supports plugging in the forward and reverse directions of the plug and socket, solving the problem that the previous Micro USB single-direction plug-in is easily damaged when inserted in the wrong direction. The Type C socket structure defines two rows of symmetrically arranged conductive terminal groups, a metal middle plate placed between the conductive terminal groups, an insulating body that holds the upper and lower rows of conductive terminal groups and the metal middle plate as a whole, and a metal ring sleeved in the middle of the insulating body. The metal ring serves to reinforce the insulating body of the assembled structure and is used to contact the spring of the plug to connect and ground to play a shielding role, such as the retaining member disclosed by the applicant in the patent application number 201420479369.0. Later, as the actual application scenarios changed, the metal ring was cancelled while maintaining compatibility. For example, high-end application fields need to be waterproof, and the insulating body is designed by in-mold injection molding, and no reinforcement is required to prevent the upper and lower parts from splitting. The setting of the metal ring is not conducive to waterproof design and affects the waterproof performance. Canceling the metal ring can overcome the above defects, but it will inevitably lose some shielding performance, which may affect high-frequency signal transmission. After the Type C interface evolved to USB4.0, the high-frequency transmission performance requirements were further improved. How to combine waterproof performance with metal shielding performance has become a technical problem that needs to be solved. Utility Model Content

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

[0004] In order to solve the above technical problems, the present application provides a high-frequency transmission USB socket, including a connector and a metal shell sleeved on the periphery of the connector, the connector including a plurality of conductive terminals, an insulating body and a shielding sheet that fixes the conductive terminals as a whole, the insulating body including a base, a wrapping portion extending forward from the base, and a docking tongue portion extending forward from the wrapping portion, the shielding sheet including a lap portion exposed to the surface of the wrapping portion, a connecting portion extending backward from the lap portion, and a spot welding portion extending in a lateral direction after being bent outward from the rear end of the connecting portion, the spot welding portion at least partially overlaps with the metal shell for contact and conduction.

[0005] Preferably, the outer diameter of the base portion is greater than the outer diameter of the wrapping portion, and the outer diameter of the wrapping portion is greater than the outer diameter of the docking tongue portion.

[0006] Preferably, the metal shell includes a frame with perforations formed through the front and back, and a welding lug extending from the front end edge of the frame and overlapping the outer surface of the spot welding part, and the welding lug is tightly attached to the spot welding part and fixed together by spot welding.

[0007] Preferably, the welding lugs are formed by bending toward each other from the upper and lower sides of the front end surface of the frame body and then extending horizontally forward, and the distance between a pair of the welding lugs is smaller than the distance between the upper and lower inner wall surfaces of the through hole.

[0008] Preferably, a blocking protrusion is formed on the rear edge of the base protruding radially outward, a front blocking protrusion which limits the blocking protrusion is formed on the front end inner wall surface of the through hole, the welding protrusion is located in front of the blocking protrusion, and the thickness of the welding protrusion is thinner than the thickness of the frame.

[0009] Preferably, the shielding sheet is integrally formed in the insulating body, the overlapping portion extends laterally and its surface is exposed to the outer surface of the wrapping portion, the connecting portion is formed by extending backward from the rear end of the overlapping portion, the rear end of the connecting portion is bent upward to form a bent portion, and the free end of the bent portion is connected to the spot welding portion as a whole, so that the spot welding portion is closer to the outside than the overlapping portion.

[0010] Preferably, the front end of the overlapping portion extends forward to form a plurality of extended contacts, the outer surface of the overlapping portion and the outer surface of the wrapping portion are on the same horizontal plane, the connecting portion is at least one strip structure extending backward from the rear end of the overlapping portion, adjacent strip structures are independent of each other, and are separated by gaps or holes, and a notch is provided at the front end of the connection between the spot welding portion and the bending portion of the connecting portion, and in the vertical projection direction, the bending portion is at least partially located in the notch.

[0011] Preferably, the spot welding portion includes a main body portion arranged laterally on the outer surface of the base, and a spot welding area punched outward from the middle of the main body portion to form a horizontal plane higher or lower than the outer surface of the main body portion. Except for the spot welding area, the rest of the spot welding portion is covered by the insulating body, and the shielding sheet is fixed and connected to the welding protrusion by spot welding through the spot welding area.

[0012] Preferably, the conductive terminal includes a first terminal group and a second terminal group arranged in two rows, a shielding plate is provided between the first terminal group and the second terminal group, the insulating body includes a first insulator that fixes the first terminal group as a whole, a second insulator that fixes the second terminal group and the shielding plate as a whole, and a third insulator that fixes the first insulator, the second insulator and the shielding sheet as a whole, the first insulator, the second insulator and the third insulator constitute the insulating body; 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, and the rear bearing part corresponds to the rear bearing part, the overlapping part of the shielding sheet is attached to the outer surface of the front bearing part, the spot welding part is attached to the outer surface of the rear bearing part, the spot welding part is provided with hooks on both lateral sides, and the rear bearing part is provided with slots for the hooks to be inserted and fixed on both lateral sides.

[0013] Preferably, the insulating body also includes a tail portion located behind the base portion, the tail portion and the base portion are separated to form a partition portion, the frame is arranged around the outer periphery of the partition portion, waterproof glue is injected into the partition portion to achieve that the inside of the USB socket is not waterproof, and a front groove is also provided on the front end surface of the frame body, a sealing ring is formed in the front groove, and the sealing ring abuts against an object of the electronic device to achieve waterproofing.

[0014] The high-frequency transmission USB socket of the present application is provided with shielding sheets on the upper and lower sides of the insulating body, so that the overlapping part of the shielding sheet is electrically connected with the docking plug at the wrapping part, and then is welded and connected with the metal shell through the spot welding part, so that the metal shell and shielding sheet of the plug and the socket are connected to form a grounding path, providing better shielding performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0016] Embodiment 1

[0017] Figure 1 This is a three-dimensional diagram of the high-frequency transmission USB socket of Example 1 being welded on a printed circuit board;

[0018] Figure 2 It is a three-dimensional diagram of the high-frequency transmission USB socket of the first embodiment;

[0019] Figure 3 This is a three-dimensional exploded view of the high-frequency transmission USB socket of Example 1;

[0020] Figure 4It is an exploded view of the first terminal module and the second terminal module of the high-frequency transmission USB socket of Example 1;

[0021] Figure 5 For along Figure 2 A cross-sectional view taken along the dashed line AA shown;

[0022] Figure 6 It is a three-dimensional diagram of the shielding sheet of the high-frequency transmission USB socket of the first embodiment;

[0023] Figure 7 It is a three-dimensional diagram of another angle of the shielding sheet of the high-frequency transmission USB socket of the first embodiment;

[0024] Figure 8 This is a three-dimensional diagram of the shielding sheet of the high-frequency transmission USB socket of Example 1 assembled on the first terminal module and the second terminal module;

[0025] Fig. 9 This is a front view of the metal shell of the high-frequency transmission USB socket of Example 1;

[0026] Fig.10 This is a rear view of the metal shell of the high-frequency transmission USB socket of Example 1;

[0027] Fig.11 It is a rear view of the metal shell of the high-frequency transmission USB socket of the first embodiment;

[0028] Fig.12 This is a diagram showing the combination of a shielding sheet and a metal shell of a high-frequency transmission USB socket in Example 1;

[0029] Fig.13 For along Figure 2 A cross-sectional view taken along the dashed line BB is shown.

[0030] Embodiment 2

[0031] Fig.14 This is a cross-sectional view of a high-frequency transmission USB socket according to Embodiment 2.

[0032] Description of Reference Numerals

[0033] Printed circuit board-10; breach-11; welding protrusion-12; metal shell-20; frame-21; front groove-211; through hole-22; front stop protrusion-221; welding protrusion-23; ear-24; fixing hole-241; extended tail-25; side plate-251; lower support part-252; welding part-253; conductive terminal-30; first terminal group-30a; second terminal group-30b; ground terminal-301; high frequency terminal-302; power terminal-303; signal terminal-304; contact part-31; wrapped part-32; welding foot-33; shielding plate-34; insulating body-40; base Part-401; blocking protrusion-4011; wrapping part-402; docking tongue part-403; tail part-404; partition part-405; first insulator-41; front bearing part-411; rear bearing part-412; welding foot holding part-413; card slot-414; second insulator-42; third insulator-43; waterproof glue-50; sealing ring-60; shielding sheet-70; overlapping part-71; extended contact-711; thin end part-712; connecting part-72; bending part-721; spot welding part-73; main body part-731; spot welding area-732; snap-in part-733; notch-734; connector-A.

[0034] First shielding sheet-701; second shielding sheet-702; metal insert-202; metal tail cover-201. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of this application clearer, the technical solution of this application will be clearly and completely described below in combination with the specific embodiments of this application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of this application, not all of them.

[0036] This application is Figure 1 The X direction is the lateral direction, the Y direction is the front of the longitudinal direction, and the Z direction is the upper direction of the vertical direction.

[0037] Embodiment 1

[0038] Please refer to Example 1 of this application Figures 1 to 13 As shown, the structural composition and technical principle of the high-frequency transmission USB socket of this embodiment will be described in detail in conjunction with the drawings of the specification.

[0039] The high-frequency transmission USB socket of the present application is a socket of a Type C USB interface, which has good waterproof performance and high-frequency signal shielding performance to avoid interference in the transmission of high-frequency signals.

[0040] See also Figure 1As shown, the high-frequency transmission USB socket of the present application is welded on a printed circuit board 10, and a break 11 is provided at the edge of the printed circuit board 10. The break 11 is used to accommodate an object (not shown) inserted therein for fixing the USB socket. The object may be a protruding part of the outer frame of an electronic device, etc. The object is provided with at least one lock hole on both sides in the horizontal direction for fixing the USB socket. The middle part of the break 11 protrudes forward to form a welding protrusion 12, and the USB socket is welded on the welding protrusion 12 to be connected with the printed circuit board 10. The welding protrusion 12 is provided with welding holes 121 on both sides in the horizontal direction.

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

[0042] The plug connector A includes conductive terminals 30 arranged in two rows, a shielding plate 34 disposed between the two rows of conductive terminals 30, a shielding sheet 70, and an insulating body 40 that holds the shielding plate 34, the shielding sheet 70 and the conductive terminals 30 as a whole. The insulating body 40 includes a base 401, a wrapping portion 402 extending forward from the base 401, a docking tongue 403 extending forward from the wrapping portion 402, a tail 404 located behind the base 401, and a partition 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 docking tongue 403.

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

[0044] The first terminal group 30a and the second terminal group 30b respectively include a pair of grounding terminals 301 located at the outermost sides in the horizontal direction, two pairs of high-frequency terminals 302 located inside the pair of grounding 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 electrically contacted with each other, and the upper and lower rows of the high-frequency terminals 302 are also isolated by the shielding plate 34 to avoid crosstalk or interference between the upper and lower rows of the high-frequency terminals 302. In order to improve the current carrying capacity and reduce the impedance between the ground terminals 301 and the power terminals 303 in the upper and lower rows, the thickness and width of the ground terminals 301 and the power terminals 303 can be increased during implementation, so that the ground terminals 301 in the upper row and the ground terminals in the lower row are allowed to contact each other, and the power terminals 303 in the upper row and the power terminals 303 in the lower row are allowed to contact each other (see Figure 5 The shielding plate 34 is only located between the upper and lower rows of high-frequency terminals 302 and does not occupy the space between the upper and lower rows of grounding terminals 301 and the upper and lower rows of power terminals 303. The specific design scheme refers to the patent No. 201811145442.X applied by the applicant in 2018, which will not be repeated here.

[0045] The outer surfaces of the first insulator 41 and the second insulator 42 include a front bearing portion 411 provided at a position corresponding to the wrapping portion 402 of the insulating body 40, a rear bearing portion 412 provided at a position corresponding to the base portion 401, and a solder leg retaining portion 413 provided at a position corresponding to the tail portion 404. The rear bearing portion 412 and the solder leg retaining portion 413 are disconnected and connected as a whole only by the first terminal group 30a or the second terminal group 30b. The two lateral sides of the rear bearing portion 412 are recessed inward to form a card slot 414. In other embodiments, the card slot 414 can also be provided at other positions of the front bearing portion 411 or the rear bearing portion 412. The horizontal position of the front bearing portion 411 is closer to the inside than the rear bearing portion 412, so that the surface of the rear bearing portion 412 protrudes from the surface of the front bearing portion 411.

[0046] Please continue reading Figure 6 , Figure 7As shown, the shielding sheet 70 includes a lap portion 71 extending in the transverse direction, a connecting portion 72 extending backward from the lap portion 71, and a spot welding portion 73 connected to the rear end of the connecting portion 72 and extending in the transverse direction. The horizontal position of the spot welding portion 73 is more outwardly protruding than the lap portion 71, that is, the horizontal positions of the spot welding portions 73 on the upper and lower sides are higher or lower than the horizontal position of the lap portion 71. Specifically, an outward bending portion 721 is formed at the rear end of the connecting portion 72 to achieve the horizontal position difference between the lap portion 71 and the spot welding portion 73.

[0047] The overlapping portion 71 extends in the lateral direction and the front end protrudes forward to form a plurality of extended contacts 711. The number of the extended contacts 711 can be determined according to the number of contact springs in the corresponding USB plug. Preferably, the extended contacts 711 include three extending forward in the middle and at both ends. The inner surfaces of the two lateral ends of the overlapping portion 71 are thinned to form thin ends 712, so that the inner surfaces of the thin ends 712 are recessed outward. The connecting portion 72 is formed by extending backward from the rear end of the overlapping portion 71 along the plug-in direction. The connecting portion 72 includes at least one strip structure. If the connecting portion 72 is a plurality of strip structures, the strip structures are independent of each other so that there are gaps or holes between adjacent strip structures. The spot welding part 73 is formed by extending in the lateral direction, and the front end is connected to the bending part 721 of the connecting part 72 as a whole. A notch 734 is provided at the connection between the spot welding part 73 and the bending part 721, so that the projection of the bending part 721 in the vertical direction is at least partially located in the notch 734, so as to wrap the bending part 721 in the subsequent injection molding process. The middle part of the spot welding part 73 is punched outward to form a spot welding area 732 that slightly protrudes outward, and the outer surface of the spot welding area 732 protrudes outward from the surface of the rest of the spot welding part 73. The lateral ends of the spot welding part 73 are bent inward to form a hook 733. In other embodiments, the hook 733 can also be formed by bending inward after tearing from the rest of the spot welding part, or it can be arranged on the overlap part 71 and the connecting part 72.

[0048] Please continue reading Figures 3 to 8 As shown, see Figure 4 , Figure 5 , Figure 8As shown, the two shielding sheets 70 are respectively assembled on the first insulator 41 and the second insulator 42. 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 slots 414 at both ends of the rear bearing portion 412 for fixing. In other embodiments, the hooks 733 and the slots 414 can be arranged at other positions. As mentioned above, the hooks 733 can also be arranged in other areas of the spot welding portion 73 or on the connecting portion 72 and the overlapping portion 71. However, due to the problem of space utilization, it is still the best setting scheme to arrange them on the spot welding portion 73.

[0049] Key References Figure 3 As shown, after the shielding sheet 70 is respectively assembled on the first insulator 41 and the second insulator 42, the first terminal module and the second terminal module are stacked and assembled together, and then injection molding is performed again to form the third insulator 43. The first insulator 41, the second insulator 42 and the third insulator 43 together constitute the insulating body 40. In other embodiments, the first insulator 41 and the second insulator 42 can also be the same component, that is, the three-time injection molding in the first embodiment is changed to a two-time injection molding.

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

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

[0052] Please continue reading Figures 9 to 11As shown, the metal shell 20 includes a frame 21 with through holes 22 passing through the front and back, ears 24 extending from the lateral sides of the frame 21, an extended tail 25 extending backward from the lateral sides of the rear end of the frame 21, and welding protrusions 23 extending forward from the upper and lower sides of the front end edge of the frame 21.

[0053] The front end surface of the frame body 21 is recessed backward to form a front groove 211, and the front groove 211 is used to install or mold the sealing ring 60. The sealing ring 60 is preferably fixed in the front groove 211 of the front end surface of the frame body 21 by molding.

[0054] The inner diameter of the front end 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 lugs 23 are formed by extending forward from the front edges of the upper and lower sides of the frame 21. The welding lugs 23 are first bent toward each other from the front edges of the upper and lower sides of the frame 21 and then extended forward horizontally. The distance between a pair of welding lugs 23 is smaller than the distance between the inner wall surfaces of the upper and lower sides of the frame 21.

[0055] The ear portion 24 is formed by extending from the outer side of the frame body 21 in the lateral direction and is provided with a fixing hole 241, and the fixing hole 241 is used to lock on an object inserted into the opening 11 of the printed circuit board 10. The extended tail portion 25 includes a side plate 251 extending backward from the two lateral side walls of the frame body 21, a lower support portion 252 protruding from the bottom side of the side plate 251 toward the opposite inner side, and a welding portion 253 extending downward from the bottom surface of the side plate 251.

[0056] Please continue reading Figures 8 to 13 As shown, see Fig.12 , Fig.13As shown, the connector A is inserted into the through hole 22 of the metal shell 20 from back to front, and the blocking protrusion 4011 at the rear edge of the base 41 of the insulating body 40 abuts against the front blocking protrusion 221 at the front edge of the through hole 22 of the metal shell 20 to limit the forward insertion of the connector A into the metal shell 20 to the terminal position. At this time, the welding protrusion 23 is tightly attached to the spot welding area 732 of the shielding sheet 70 and the welding protrusion 23 is spot welded and fixed to the spot welding area 732 through the spot welding process. The through hole 22 of the frame 21 is mainly located at the periphery of the partition part 405. When the waterproof glue 70 is injected into the partition part 405, the waterproof glue 70 fills the partition part 405 to realize the waterproofing of the USB socket itself. The inner wall surface of the frame 21 can be used as a container of the waterproof glue 70 to prevent the waterproof glue 70 from overflowing, and the waterproof partition is achieved 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 waterproofing of the joint between the USB socket of the present application and the electronic device.

[0057] In this embodiment, the shielding sheet 70 is used to connect the shell of the docking plug, and the shielding sheet 70 is then welded to connect the metal shell 20 of the USB socket of the present application to achieve grounding connection between the plug and the socket, so that it has good shielding performance.

[0058] Embodiment 2

[0059] See also Fig.14 The figure is a cross-sectional view of the second embodiment of the present application. Compared with the first embodiment, the second embodiment is different from the first embodiment in the following aspects:

[0060] The metal shell 20 is removed and replaced with a metal insert 202 and a metal tail cover 201; the shielding sheet 70 is replaced with 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 eliminated, in order to achieve grounding connection between the shielding sheet and the socket shell, two upper and lower shielding sheets cannot be symmetrically arranged. Embodiment 2 proposes a feasible solution to the above technical problem.

[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 a lap portion 71, a connecting portion 72 and a spot welding portion 73. The structure of the second shielding sheet 702 is roughly 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 401, crosses the partition portion 405 and extends to the position of the tail 404, while the spot welding portion 73 extends from the connecting portion 72 to the upper surface of the tail 404. The connecting portion 72 still adopts a strip structure to facilitate the flow of plastic during injection molding. Neither the first shielding sheet 701 nor the second shielding sheet 702 will be exposed on the outer surface of the base 401, but will be buried in the plastic of the base 401.

[0063] The structure and fixing method of the metal insert 202 are similar to the metal reinforcement in Patent No. 202210652078.6 applied for by the applicant in 2022, including a main body 2021 that transversely passes through the base 401 and an ear (not shown) that extends to the lateral outside of the base 401. The difference is that the main body 2021 of the metal insert 202 is located on the inner side of the spot welding portion 73 of the second shielding plate 702 and is spot welded together. Before injection molding the third insulator 43, the metal insert 202 and the second shielding plate 702 are pre-welded together, or the metal insert 202 and the second shielding plate 702 are an integral stamping structure. The spot welding process is omitted here, which can save costs. If the materials of the two are the same, this technical solution is the preferred solution, and it can save the vertical space of the overlapping parts of the two, thereby improving space utilization.

[0064] One of the functions of the metal tail cover 201 is to shield the conductive terminals 30 located in the tail 404. Secondly, the metal tail cover 201 will also extend to form a welding portion welded on the printed circuit board 10 to fix the USB socket. The structure is similar to the shielding part of the tail of the shielding connector disclosed in the patent application No. 201810877483.1 applied by the applicant in 2018. The difference is that the metal tail cover 201 in this embodiment needs to be improved to assume part of the function of the removed metal shell 20. The difference is that the lateral sides of the metal tail cover 201 of the present application extend forward to the position of the base 401 and are bent to form ears. The ears of the metal tail cover 201 and the ears of the metal insert 202 are stacked together and spot welded to form the final ears. The final ears are used to be fixed on an object to fix the USB socket of the present application. The spot welding portion 73 of the first shielding sheet 701 is located inside the metal tail cover 201 and spot welded tightly together. In other embodiments, the first shielding sheet 701 and the metal tail cover 201 are an integrally stamped structure, for the same reason and principle as the integrally formed structure of the second shielding sheet 702 and the metal insert 202.

[0065] The second embodiment realizes the shielding solution of USB socket products without metal shell by connecting the contact springs of the plug through the first shielding sheet 701 and the second shielding sheet 702 and then connecting to the metal insert 202 and the metal tail cover 201.

[0066] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above embodiments only express the preferred implementation of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A high-frequency transmission USB socket, comprising a plug-in connector and a metal shell sleeved on the outer periphery of the plug-in connector, wherein the plug-in connector comprises a plurality of conductive terminals, an insulating body and a shielding sheet for holding the conductive terminals as a whole, wherein the insulating body comprises a base, a wrapping portion extending forward from the base, and a docking tongue portion extending forward from the wrapping portion, wherein: The shielding sheet includes an overlapping portion whose surface is exposed to the surface of the wrapping portion, a connecting portion extending backward from the overlapping portion, and a spot welding portion extending in a lateral direction after being bent outward from the rear end of the connecting portion. The spot welding portion at least partially overlaps and contacts the metal shell.

2. The high-frequency transmission USB socket according to claim 1, characterized in that: The outer diameter of the base portion is greater than the outer diameter of the wrapping portion, and the outer diameter of the wrapping portion is greater than the outer diameter of the butt tongue portion.

3. The high-frequency transmission USB socket as claimed in claim 2, characterized in that: The metal shell includes a frame body with perforations formed through the front and back, and a welding convex piece extending from the front end edge of the frame body and overlapping the outer surface of the spot welding part. The welding convex piece is tightly attached to the spot welding part and fixed together by spot welding.

4. The high-frequency transmission USB socket as claimed in claim 3, characterized in that: The welding convex pieces are formed by bending toward each other from the upper and lower sides of the front end surface of the frame body and then extending forward horizontally. The distance between a pair of the welding convex pieces is smaller than the distance between the upper and lower inner wall surfaces of the through hole.

5. The high-frequency transmission USB socket as claimed in claim 4, characterized in that: The rear edge of the base protrudes radially outward to form a blocking protrusion, and the front inner wall surface of the front end of the through hole is formed with a front blocking protrusion that limits the blocking protrusion. The welding protrusion is located in front of the blocking protrusion, and the thickness of the welding protrusion is thinner than the thickness of the frame.

6. The high-frequency transmission USB socket as claimed in claim 3, characterized in that: The shielding sheet is integrally formed in the insulating body, the overlapping portion extends laterally and its surface is exposed to the outer surface of the wrapping portion, the connecting portion is extended backward from the rear end of the overlapping portion, the rear end of the connecting portion is bent upward to form a bent portion, and the free end of the bent portion is connected to the spot welding portion as a whole, so that the spot welding portion is closer to the outside than the overlapping portion.

7. The high-frequency transmission USB socket according to claim 6, characterized in that: The front end of the overlapping portion extends forward to form a plurality of extended contacts, the outer surface of the overlapping portion and the outer surface of the wrapping portion are on the same horizontal plane, the connecting portion is at least one strip structure extending backward from the rear end of the overlapping portion, adjacent strip structures are independent of each other, and are separated by gaps or holes, a notch is provided at the front end of the connection between the spot welding portion and the bending portion of the connecting portion, and in the vertical projection direction, the bending portion is at least partially located in the notch.

8. The high-frequency transmission USB socket as claimed in claim 7, characterized in that: The spot welding portion includes a main body portion arranged laterally on the outer surface of the base, and a spot welding area punched outward from the middle of the main body portion to form a horizontal plane higher or lower than the outer surface of the main body portion. Except for the spot welding area, the rest of the spot welding portion is covered by the insulating body, and the shielding sheet is fixed and connected to the welding protrusion through spot welding in the spot welding area.

9. The high-frequency transmission USB socket according to claim 8, characterized in that: The conductive terminal includes a first terminal group and a second terminal group arranged in two rows, a shielding plate is provided between the first terminal group and the second terminal group, the insulating body includes a first insulator that fixes the first terminal group as a whole, a second insulator that fixes the second terminal group and the shielding plate as a whole, and a third insulator that fixes the first insulator, the second insulator and the shielding sheet as a whole, the first insulator, the second insulator and the third insulator constitute the insulating body; 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, and the rear bearing part corresponds to the rear bearing part, the overlapping part of the shielding sheet is attached to the outer surface of the front bearing part, the spot welding part is attached to the outer surface of the rear bearing part, the spot welding part is provided with hooks on both sides of the horizontal direction, and the rear bearing part is provided with slots for the hooks to be inserted and fixed on both sides of the horizontal direction.

10. The high-frequency transmission USB socket according to claim 9, characterized in that: The insulating body also includes a tail portion located behind the base portion, the tail portion and the base portion are separated to form a partition portion, the frame is arranged around the periphery of the partition portion, waterproof glue is injected into the partition portion to achieve waterproofing inside the USB socket, and a front groove is also provided on the front end surface of the frame body, a sealing ring is formed in the front groove, and the sealing ring abuts against an object of the electronic device to achieve waterproofing.

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