USB socket

Abstract

A USB socket comprises a first terminal module, a second terminal module and an insulation body which fixedly holds the first terminal module and the second terminal module into a whole, the first terminal module comprises a first terminal group, the second terminal module comprises a second terminal group, and the insulation body is arranged on the insulation body. Each of the first terminal group and the second terminal group comprises a pair of grounding terminals arranged on the transverse outer side, a pair of power supply terminals located on the inner side of the pair of grounding terminals, and a plurality of signal terminals located between the pair of power supply terminals; each conductive terminal of the first terminal group and the second terminal group comprises an embedded part embedded in the insulating body, a contact part formed by extending forwards from the embedded part, and a weld leg formed by extending backwards from the embedded part, and the first terminal module and the second terminal module also comprise a grounding piece; the grounding sheet comprises a lap-joint plate body and contact sheet bodies, wherein the lap-joint plate body extends across the power supply terminal and the signal terminal along the transverse direction, and the contact sheet bodies are bent from two ends of the lap-joint plate body so as to be electrically contacted with the surface of the embedded part of the grounding terminal. The USB socket is simple in structure and is provided with the grounding piece.

Description

Technical Field

[0001] This application relates to the field of electrical connectors, and more particularly to a USB socket. Background Technology

[0002] A patent application of the People's Republic of China with application number 202420967313.3 discloses a USB socket without a shielding shell, which is used in mobile phones or tablets. The socket includes several conductive terminals, an insulating body that holds the conductive terminals together, a grounding plate integrally formed on the insulating body, a metal insert formed within the insulating body, and a metal tail cap. The insulating body includes a base, a wrapping portion extending forward from the base, a mating tongue extending forward from the wrapping portion, and a tail portion formed behind the base. The grounding plate includes a first grounding plate and a second grounding plate respectively formed on the upper and lower sides of the insulating body. Each grounding plate includes an overlapping portion fixed and exposed on the surface of the wrapping portion and a spot-welded portion extending rearward from the overlapping portion. The spot-welded portion of the first grounding plate extends to the tail portion and is welded to the metal tail cap for conductivity. The spot-welded portion of the second grounding plate extends to the base and is welded to the metal insert for conductivity.

[0003] To comply with standards and specifications, grounding plates are formed on the upper and lower sides of the insulating body. These grounding plates extend rearward to the metal tail cap for welding. This technical solution places high demands on product manufacturing, as the rearward-extending grounding plates encroach on the already limited thickness of the product and increase the spot welding process, thus raising costs. Furthermore, since the USB socket lacks a metal shielding shell, the front end cannot be supported on the printed circuit board during soldering, easily leading to poor solder flatness. Rongguo needs to provide additional technical solutions to overcome this problem. Utility Model Content

[0004] Therefore, it is necessary to provide a USB socket with a grounding plate that is simple in manufacturing process and structure.

[0005] To address the aforementioned technical problems, this application provides a USB socket, comprising a first terminal module, a second terminal module, and an insulating body that secures the first terminal module and the second terminal module together. The first terminal module includes a first terminal group, and the second terminal module includes a second terminal group. Both the first terminal group and the second terminal group include a pair of ground terminals arranged laterally on the outer side, a pair of power terminals located inside the pair of ground terminals, and a plurality of signal terminals located between the pair of power terminals. Each conductive terminal of the first terminal group and the second terminal group includes an embedded portion embedded in the insulating body, a contact portion extending forward from the embedded portion, and a solder pad extending backward from the embedded portion. Both the first terminal module and the second terminal module further include a grounding plate, which includes a lap plate extending laterally across the power terminals and signal terminals, and a contact piece bent from both ends of the lap plate to make electrical contact with the surface of the embedded portion of the ground terminal.

[0006] Preferably, the insulating body includes a base, a wrapping portion extending forward from the base, a mating tongue extending forward from the wrapping portion, and a tail portion extending rearward from the base; the lap plate of the grounding piece is exposed on the upper and lower surfaces of the wrapping portion.

[0007] Preferably, the contact piece is stamped to form a protrusion protruding toward the embedded portion of the grounding terminal, and the contact piece makes electrical contact with the surface of the embedded portion through the protrusion.

[0008] Preferably, the contact piece is attached to the surface of the embedded part of the grounding terminal and the two are fixed and electrically connected by spot welding.

[0009] Preferably, the first terminal module further includes a first insulator that injection molds and fixes the first terminal group and the grounding piece into one piece; the second terminal module further includes a second insulator that injection molds and fixes the second terminal group and another grounding piece into one piece, the first insulator and the second insulator both include a front holding portion and a rear holding portion, and the grounding pieces are both fixed in the front holding portion.

[0010] Preferably, the overlapping plate has a molding hole formed vertically through it, and the first insulator has an injection hole formed through it at the position corresponding to the molding hole. The injection hole is connected between the first terminal module and the second terminal module. When molding the insulating body, molten plastic is pressed into the insulating body from the molding hole and the injection hole.

[0011] Preferably, the front retaining portion corresponds to the wrapping portion of the insulating body, the rear retaining portion is wrapped by the tail portion of the insulating body, and the insulating body further includes a pair of extending arms extending rearward from both sides of the tail portion, with buckle protrusions on the outer side of the extending arms.

[0012] Preferably, the USB socket further includes a reinforcing member, which includes an embedded portion extending laterally, a bent portion formed by bending upward from both ends of the embedded portion, a platform portion formed by bending outward from the bent portion, and a welding foot formed by bending downward from the outer end of the platform portion. The reinforcing member is fixed to the lower side of the rear retaining portion of the second insulator of the second terminal module and is integrally wrapped inside by the insulating body. The platform portion is exposed on the outward side of the tail portion.

[0013] Preferably, the USB socket further includes a metal tail cover covering the tail portion. The metal tail cover includes a cover body covering the tail portion and the upper side of a pair of extended arms, a side wall formed by bending downward from the outer and rear sides of the cover body, a snap hole formed on the side wall and engaging with the snap protrusion, welding feet formed under the side walls on both sides, and a welding platform formed by bending from the side wall to the outer side and overlapping the platform portion. The welding platform is spot welded to the platform portion of the reinforcing member.

[0014] Preferably, the USB socket is mounted on a printed circuit board, the printed circuit board including a board body, a notch formed on the outer edge of the board body, and a first solder hole and a second solder hole formed on the lateral sides and rear side of the notch. The solder feet of the first terminal group and the second terminal group are mounted on the board body on the rear side of the notch. The solder feet of the metal tail cap are inserted into the second solder hole on the rear side of the notch, and the solder feet of the reinforcing member are inserted into the first solder hole.

[0015] The USB socket of this application is grounded by bending the grounding plate downward on both sides to form a contact plate body that overlaps the grounding terminal. There is no need to extend the grounding plate to other directions for grounding. This structure is simple and reliable and does not occupy the limited thickness space of the USB socket. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a perspective view of the USB socket of this application supported on a printed circuit board by a balance frame;

[0018] Figure 2This is a perspective view of the USB socket of this application soldered onto a printed circuit board;

[0019] Figure 3 This is a perspective view of the balance frame of this application;

[0020] Figure 4 This is an exploded perspective view of the USB socket of this application;

[0021] Figure 5 For along Figure 1 The cross-sectional view shown by the dashed line AA;

[0022] Figure 6 This is a perspective view of the terminal block, grounding plate, reinforcing member, and middle plate of the USB socket of this application;

[0023] Figure 7 This is a perspective view of the grounding plate of the USB socket in this application;

[0024] Figure 8 For the purposes of this application Figure 6 The cross-sectional view shown by the dashed CC line;

[0025] Figure 9 A perspective view of the USB socket of this application without the insulating body and grounding plate;

[0026] Figure 10 For along Figure 2 The cross-sectional view shown by the dashed line BB.

[0027] Explanation of reference numerals in the attached figures

[0028] Printed Circuit Board - 10; Board Body - 11; Notch - 12; First Solder Hole - 13; Second Solder Hole - 14; Balance Frame - 20; Frame Body - 21; Through Cavity - 22; Guide Angle - 221; Raised Rib - 23; Balance Arm - 24; Support Raised Strip - 241; USB Socket - A; Insulating Body - 30; Base - 31; Wrapping Part - 32; Butt Tongue - 33; Tail - 34; Extension Arm - 35; Snap-on Protrusion - 36; Glue Inlet - 37; First Terminal Module - 40; First Terminal Group - 41; First Insulator - 42; Grounding Terminal - 401; Power Terminal - 402; High Frequency Terminal - 403; Signal Terminal - 404; Embedded Part - 411; Connector Contact part - 412; Bending part - 413; Welding foot - 414; Front holding part - 421, 521; Rear holding part - 422, 522; Tail end holding part - 423; Injection hole - 424; Molding groove - 425; Clearance part - 426; Second terminal module - 50; Second terminal group - 51; Second insulator - 52; Metal middle plate - 60; Reinforcing member - 70; Embedded part - 71; Bending part - 72; Platform part - 73; Welding foot - 74, 84; Metal tail cap - 80; Cover body - 81; Side wall - 82; Welding table - 83; Snap-in hole - 85; Grounding piece - 90; Overlap plate body - 91; Molding hole - 92; Contact piece body - 93; Protrusion - 931. Detailed Implementation

[0029] 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.

[0030] This application is based on Figure 1 The X direction is the horizontal direction, the Y direction is the front direction (forward), and the Z direction is the top direction (vertical).

[0031] Please see Figures 1 to 5 As shown, the USB socket A of this application is mounted and soldered onto a broken printed circuit board 10. The printed circuit board 10 includes a board body 11, a notch 12 formed on one side of the outer perimeter of the board body 11, first solder holes 13 formed on the board body 11 and located on both sides of the notch 12 laterally, and a second solder hole 14 located on the board body 11 at the rear end of the notch 12.

[0032] Key references Figure 2 , Figure 4As shown, the USB socket A of this application includes a first terminal module 40, a second terminal module 50, a middle plate 60, a reinforcing member 70, a grounding plate 90, and an insulating body 30 that holds the aforementioned components together. The insulating body 30 includes a base 31, a wrapping portion 32 extending forward from the base 31, a mating tongue 34 extending forward from the wrapping portion 32, and a tail portion 34 extending backward from the base 31. The grounding plate 90 is integrally formed on the upper and lower side surfaces of the wrapping portion 32, and the reinforcing member 80 is integrally formed on the outer periphery of the tail portion 34 and extends from the insulating body 30 on both lateral sides. A pair of extension arms 35 also extend backward on both lateral sides of the tail portion 34, and a snap-fit ​​protrusion 36 is provided on the lateral outer side of the pair of extension arms 35. The injection port for the insulating body 30 during injection molding is formed on one side surface of the wrapping portion 32 and has an injection port 37. The rear side of the tail portion 34 is located below the extended arm portion 35 to allow the insulating body 30 to sink into the notch 12 from the front side starting from the tail portion 34.

[0033] Key references Figure 3 As shown, the balancing frame 20 includes a frame 21, a cavity 22 extending through the frame 21 from front to back, and balancing arms 24 extending laterally outward from the frame 21 and mounted on plates 11 on both sides of the notch 12. The inner wall of the cavity 22 has several raised ribs 23. The rear opening of the cavity 22 gradually increases in size and forms a guide slope 221. The balancing arms 24 extend laterally outward from the upper side of the frame 21, and a supporting protrusion 241 is formed on the bottom surface of the balancing arms 24. The balancing frame 20 is supported on the plates 11 by the supporting protrusion 241 to prevent the front of the USB socket A from tilting due to gravity, facilitating subsequent SMT soldering operations. The lower part of the frame 21 is recessed into the notch 12.

[0034] When soldering the USB socket A onto the printed circuit board 10, the balance frame 20 is first fitted onto the outer periphery of the wrapping part 32 from the front, and the rib 23 keeps the wrapping part 32 and the cavity 22 precisely positioned and engaged.

[0035] Please continue reading. Figure 4 , Figures 6 to 10 As shown, the USB socket A of this application also includes a metal tail cover 80. The metal tail cover 80 is used to shield the rear ends of the first terminal module 40 and the second terminal module 50, and at the same time, it can strengthen the bonding strength of the USB socket A to the printed circuit board 10. After the bonding is completed, the balance frame 20 can be removed from the USB socket A.

[0036] The first terminal module 40 includes a first terminal group 41 and a first insulator 42 that holds the first terminal group 41 as a single unit; the second terminal module 50 includes a second terminal group 51 and a second insulator 52 that holds the second terminal group 51 as a single unit. Both the first terminal group 41 and the second terminal group 51 include a pair of outermost ground terminals 401, a pair of high-frequency terminals 403 located inside the pair of ground terminals 401, a pair of power terminals 402 located inside the two pairs of high-frequency terminals 403, and a plurality of signal terminals 404 located inside the pair of power terminals 402. Each conductive terminal of the first terminal group 41 and the second terminal group 51 includes an embedded portion 411 embedded in the insulating body 30, a contact portion 412 extending forward from the embedded portion 411 and exposed on both sides of the mating tongue portion 33, a bent portion 413 extending backward from the embedded portion 411, and a solder leg 414 extending from the bent portion 413.

[0037] Key references Figure 7 As shown, the grounding plate 90 includes two grounding plates arranged vertically opposite each other. Each grounding plate 90 includes an overlapping plate body 91 extending laterally, a forming hole 92 perpendicularly penetrating the overlapping plate body 91, and a contact plate body 93 bent from the outer lateral end of the overlapping plate body 91 toward the grounding terminal 401. The contact plate body 93 has a protrusion 931 stamped toward the grounding terminal 401.

[0038] In this embodiment, the first terminal group 41 and a grounding piece 90 are first formed into the first terminal module 40 by molding through the first insulator 42; the second terminal group 51, the middle plate 60, and the grounding piece 90 are formed into the second terminal module 50 by molding through the second insulator 52. Then, the first terminal module 40, the second terminal module 50, and the reinforcing member 70 are combined and injection molded to form the insulating body 30. When injection molding the first terminal module 40 and the second terminal module 50, the grounding piece 90 is mounted on the embedded portion 411 of the grounding terminal 401 on the first or second terminal group 41, 51. Specifically, the protrusion 931 of the contact piece 93 is pressed onto the embedded portion 411 for injection molding and fixation, and the protrusion 931 and the embedded portion 411 are made conductive and fixed by the first insulator 42 or the second insulator 52 to maintain stable conductivity.

[0039] In another embodiment, the contact plate body 93 of the grounding plate 90 is fixed together with the grounding terminal 401 by spot welding before injection molding.

[0040] In another embodiment, the first terminal group 41 is first injection molded with a first insulator 42, and the second terminal group 51 and the middle plate are injection molded with a second insulator 52. Both the first insulator 42 and the second insulator 52 include front retaining portions 421, 521 and rear retaining portions 422, 522. The front retaining portions 421, 521 correspond to the wrapping portion 32 of the insulating body 30. The surfaces of the front retaining portions 421, 521 are also provided with molding grooves 425 for pressing into the grounding piece 90, and the front retaining portion 421 is also provided with injection holes 424 corresponding to the molding holes 92 of the grounding piece 90. Molten plastic is injected into the insulating body 30 through the injection holes 424, which penetrate the front retaining portions 421. Subsequently, the grounding pieces 90 are respectively inserted into the molding grooves 425, and then the insulating body 30 is injection molded and fixed.

[0041] The first insulator 42 also includes a tail end retaining portion 423 located behind the rear retaining portion 422. The rear retaining portions 422 and 423 correspond to the tail end 34 of the insulating body 30. A clearance portion 426 is formed on the lower side of the tail end retaining portion 423. The clearance portion 426 facilitates the sinking of the USB socket A portion into the notch 12.

[0042] The reinforcing member 70 includes an embedded portion 71 extending laterally, a bent portion 72 bent upward from both sides of the embedded portion 71, a platform portion 73 bent outward from the bent portion 72, and a welding foot 74 bent vertically downward from the platform portion 73. The reinforcing member 70 is mounted on the lower surface of the rear holding portion 522 of the second insulator 52 and is enclosed by the insulating body 30. The platform portion 73 protrudes outward from the tail portion 34 of the insulating body 30. The welding foot 74 is inserted into the first solder hole 13 of the printed circuit board 10.

[0043] The USB socket A of this application also includes a metal tail cover 80, which covers the tail 34 and the upper side of a pair of extended arms 35 of the insulating body 30. The metal tail cover 80 includes a cover body 81, side walls 82 formed by bending downward from the lateral sides and rear end of the cover body 81, snap holes 85 formed on the side walls 82, welding feet 84 formed by extending downward from the side walls 82, and welding platforms 83 formed by bending a portion of the side walls 82 outward.

[0044] The snap-fit ​​hole 85 of the metal tail cap 80 engages with the snap-fit ​​protrusions 36 on the pair of extension arms 35. When mounted on the printed circuit board, the solder feet 84 of the metal tail cap 80 are inserted into the second solder holes 14 of the printed circuit board 10 for soldering and fixing. The soldering station 83 overlaps the platform portion 73 of the reinforcing member 70 and is soldered and fixed together.

[0045] The balance frame and the USB socket using the balance frame of this application are fitted outside the wrapping part 32 by the balance frame 20, and supported on the printed circuit board 10 by the balance arms 24 extending from the lateral sides of the balance frame 20. This solves the problem that the USB socket A cannot be stably soldered when it is soldered to the printed circuit board 10 because there is no support on the front side.

[0046] The USB socket A of this application is grounded by bending the grounding piece 90 downward on both sides to form a contact piece 93 that overlaps the grounding terminal 401. This eliminates the need to extend the grounding piece 90 to other directions for grounding. This structure is simple and reliable and does not occupy much of the thickness space of the USB socket.

[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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.

[0048] The above embodiments only illustrate preferred implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A USB socket, comprising a first terminal module, a second terminal module, and an insulating body for securing the first terminal module and the second terminal module together, wherein the first terminal module includes a first terminal group, the second terminal module includes a second terminal group, and both the first terminal group and the second terminal group include a pair of ground terminals arranged laterally on the outer sides, a pair of power terminals located inside the pair of ground terminals, and a plurality of signal terminals located between the pair of power terminals; each conductive terminal of the first terminal group and the second terminal group includes an embedded portion embedded in the insulating body, a contact portion extending forward from the embedded portion, and a solder pad extending backward from the embedded portion, characterized in that... Both the first terminal module and the second terminal module include a grounding plate. The grounding plate includes a lap plate extending laterally across the power terminal and the signal terminal, and a contact plate bent from both ends of the lap plate to make electrical contact with the embedded surface of the grounding terminal.

2. The USB receptacle of claim 1, wherein, The insulating body includes a base, a wrapping portion extending forward from the base, a mating tongue extending forward from the wrapping portion, and a tail portion extending rearward from the base; the lap plate of the grounding piece is exposed on the upper and lower surfaces of the wrapping portion.

3. The USB receptacle of claim 2, wherein, The contact piece is stamped to form a protrusion that protrudes toward the embedded portion of the grounding terminal, and the contact piece makes electrical contact with the surface of the embedded portion through the protrusion.

4. The USB receptacle of claim 2, wherein, The contact piece is attached to the surface of the embedded part of the grounding terminal and the two are fixed and electrically connected by spot welding.

5. The USB socket of claim 3 or 4, wherein, The first terminal module further includes a first insulator that injection molds and fixes the first terminal group and the grounding piece into one piece; the second terminal module further includes a second insulator that injection molds and fixes the second terminal group and another grounding piece into one piece, the first insulator and the second insulator both include a front holding part and a rear holding part, and the grounding pieces are both fixed in the front holding part.

6. The USB receptacle of claim 5, wherein, The overlapping plate has a vertically penetrating forming hole, and the first insulator has a glue injection hole corresponding to the position of the forming hole. The glue injection hole is connected between the first terminal module and the second terminal module. When the insulating body is formed, molten plastic is pressed into the insulating body from the forming hole and the glue injection hole.

7. The USB receptacle of claim 6, wherein, The front retaining portion corresponds to the wrapping portion of the insulating body, and the rear retaining portion is wrapped by the tail portion of the insulating body. The insulating body also includes a pair of extending arms that extend rearward from both sides of the tail portion, and the outer side of the extending arms is provided with a buckle protrusion.

8. The USB receptacle of claim 7, wherein, The USB socket also includes a reinforcing member, which includes an embedded portion extending laterally, a bent portion formed by bending upward from both ends of the embedded portion, a platform portion formed by bending outward from the bent portion, and a welding foot formed by bending downward from the outer end of the platform portion. The reinforcing member is fixed to the lower side of the rear holding portion of the second insulator of the second terminal module and is integrally wrapped inside by the insulating body. The platform portion is exposed on the outward side of the tail portion.

9. The USB receptacle of claim 8, wherein, The USB socket also includes a metal tail cover covering the tail portion. The metal tail cover includes a cover body covering the tail portion and the upper side of a pair of extended arms, a side wall formed by bending downward from the outer and rear sides of the cover body, a snap hole formed on the side wall and engaging with the snap protrusion, welding feet formed under the side walls on both sides, and a welding platform formed by bending from the side wall to the outer side and overlapping the platform portion. The welding platform is spot welded to the platform portion of the reinforcing member.

10. The USB receptacle of claim 9, wherein, The USB socket is mounted on a printed circuit board, which includes a board body, a notch on the outer edge of the board body, and first and second solder holes formed on the lateral sides and rear side of the notch. The solder feet of the first and second terminal groups are mounted on the board body on the rear side of the notch. The solder feet of the metal tail cap are inserted into the second solder hole on the rear side of the notch, and the solder feet of the reinforcing member are inserted into the first solder hole.

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