Forward and reverse plugging USB socket

Abstract

A forward and reverse plugging USB socket comprises a plug connector and a grounding sleeve sleeved outside the plug connector, the plug connector comprises a middle plate, a first terminal group, a second terminal group and an insulation body, the first terminal group and the second terminal group are located on the upper side and the lower side of the middle plate, and the insulation body fixedly holds the middle plate, the first terminal group and the second terminal group into a whole. The insulation body comprises a base part, a transition part formed by forward extension from the base part and a butt joint tongue part formed by forward extension from the transition part, and the middle plate comprises a plate body part and a buckle protrusion formed by protruding from the transverse outer side of the front end of the plate body part. The grounding sleeve comprises a rear ring body wrapping the periphery of the base part, a bending end face which is formed by extending from the rear ring body in the center direction and wraps the front end face of the base part, and a front ring body which extends forwards from the bending end face and wraps the transition part. The distance between a pair of buckle protrusions of the middle plate is larger than the transverse distance between the inner wall faces of the front ring body, the USB socket is in butt joint with a USB plug, the USB plug comprises a plug shell, and an elastic structure which is in lap joint conduction with the upper surface and the lower surface of the front ring body is arranged in the plug shell. The device is simple in structure and low in manufacturing cost.

Description

Technical Field

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

[0002] Type C is currently the most widely used power supply and data transmission interface. The connector interface structure has been initially restricted in the standards published by the association, such as size and appearance to achieve compatibility, while the internal structure can be changed according to demand. Early Type C sockets, such as the People's Republic of China Patent Application No. 201710228598.3, disclose a USB socket comprising a metal isolation middle plate, a first terminal group and a second terminal group located on either side of the metal isolation middle plate, an insulating body that holds the isolation middle plate and the first and second terminal groups together, a metal fastener mounted on the outside of the insulating body, and a metal shell mounted on the outside of the insulating body. The lateral width of the metal fastener is smaller than the width of the docking tongue at the front end of the insulating body according to standards. It is generally made of sheet metal that is bent and then riveted or welded together. The metal fastener is welded to the metal shell. The metal fastener guides the docking plug to ground and reinforces the insulating body.

[0003] In subsequent application scenarios, with the advancement of manufacturing technology, the insulating body no longer needs to be reinforced, and when the high-frequency performance requirements are not high, most of the metal reinforcements are cancelled. However, with the release of the USB4.0 standard, high-frequency transmission performance has been further enhanced, and overseas markets require grounding in accordance with the standard. In fact, the patent application No. 202410554933.9 of the People’s Republic of China discloses a high-frequency transmission USB socket, which also includes a conventional middle plate, first and second conductive terminals located on the upper and lower sides of the middle plate, and an insulating body that holds it as a whole, and the metal fastener is divided into two pieces, which are molded in the insulating body and welded to the metal shell at the base of the insulating body. However, this structure has high manufacturing costs and relatively complex processes. Utility Model Content

[0004] In view of this, it is necessary to provide a reversible USB socket with a simple structure and a grounding function.

[0005] To solve the above-mentioned technical problems, the present application provides a reversible USB socket, comprising a connector and a grounding sleeve disposed on the outside of the connector. The connector includes a middle plate, a first terminal group and a second terminal group located on upper and lower sides of the middle plate, and an insulating body that holds the middle plate, the first terminal group, and the second terminal group together. The insulating body includes a base, a transition portion extending forward from the base, and a docking tongue extending forward from the transition portion. The middle plate includes a body and a snap-fit ​​protrusion protruding laterally from the front end of the body. The grounding sleeve includes a rear ring wrapped around the periphery of the base, a bent end surface extending from the rear ring along the center direction and wrapping around the front end surface of the base, and a front ring extending forward from the bent end surface and wrapping around the outside of the transition portion. The distance between the pair of snap-fit ​​protrusions on the middle plate is greater than the lateral distance between the inner wall surfaces of the front ring. The USB socket is connected to a USB plug. The USB plug includes a plug shell. The plug shell is provided with an elastic structure that overlaps and conducts with the upper and lower surfaces of the front ring.

[0006] Preferably, the outer diameter of the base is larger than the outer diameter of the transition portion, the outer diameter of the transition portion is larger than the outer diameter of the docking tongue, and the snap protrusion is exposed outside the docking tongue of the insulating body along the lateral outer side.

[0007] Preferably, when viewed in the longitudinal direction, the width of the buckle protrusion extending outward beyond the inner wall of the front ring body is between 0.08-0.12 mm, and the front ring body of the grounding sleeve is forced backward to squeeze the buckle protrusion into the outside of the connector.

[0008] Preferably, notches are formed in the middle of the upper and lower sides of the front ring body, and the notches help to improve the elasticity of the front ring body so as to facilitate its insertion into the connector.

[0009] Preferably, through grooves for avoiding the buckle protrusions are opened on both lateral sides of the front ring body, and the through grooves do not pass through the front end of the front ring body but pass backward to the bent end surface.

[0010] Preferably, the insulating body also includes a tail portion formed behind the base and a partition portion formed between the base and the tail portion. The base and the tail portion of the insulating body are connected as a whole to the middle plate through the first terminal group and the second terminal group. Material strip connection portions are formed on both lateral sides of the plate body of the middle plate. The material strip connection portions are located in the front ring body and are spot-welded to the front ring body.

[0011] Preferably, the USB socket further comprises a draw-out shell, the draw-out shell comprising a shell which is through-through from front to back to form a receiving cavity, a folded portion formed by folding from the front end of the shell, the rear end of the shell is at least partially surrounded by the outside of the partition portion, and waterproof glue is injected into the partition portion to form a seal which is attached to the inner wall surface of the shell, the inner wall surface of the shell is at least partially attached to the outer surface of the rear ring body, and first spot welding portions for fixing the rear ring body to the shell are formed on both lateral sides of the shell.

[0012] Preferably, the folding portion includes a reverse folding portion formed by bending in the opposite direction from the front end of the shell and an outward turning portion formed by bending radially outward from the reverse folding portion, and a sealing ring is formed by glue dotting on the outward turning portion.

[0013] Preferably, the USB socket further includes a metal shell, which includes a first shell and a second shell. The first shell and the second shell both include an attachment body attached to the upper surface or lower surface of the shell of the drawing shell, a bent body bent from the lateral sides of the attachment body and wrapping the lateral outer surface of the shell, and a welding body bent outward from the end of the bent body. The welding body of the first shell and the welding body of the second shell are attached together and spot welded, and the attachment body is spot welded to the upper and lower surfaces of the shell.

[0014] Preferably, the rear end of the welding body of the first shell is bent upward to form a pressure column, and the lateral outer side of the second shell is bent downward to form a welding foot.

[0015] The present invention employs a reversible USB socket that is stretched to form a seamless grounding sleeve. This sleeve is then inserted from the front to the back of the connector and smoothly installed by squeezing the snap-on protrusions on the mid-plate. The sleeve is then spot-welded to the drawer housing on the lateral sides, and the drawer housing surrounds the partition to achieve a waterproof seal. Compared to existing methods, the design utilizes sheet metal riveted to the outer periphery of the connector, resulting in a more stable structure, better retention, and simpler assembly. Furthermore, the design offers lower manufacturing costs compared to solutions with two upper and lower grounding plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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:

[0017] Figure 1 This is a three-dimensional combination diagram of the USB socket for this application;

[0018] Figure 2 This is a three-dimensional exploded view of the USB socket for this application;

[0019] Figure 3 This is a three-dimensional exploded view of the connector for inserting the USB socket in the forward and reverse directions of this application;

[0020] Figure 4 A three-dimensional assembly diagram of the middle plate and conductive terminal group of the forward and reverse plug-in USB socket of this application;

[0021] Figure 5 A three-dimensional diagram of the middle plate of the present application for inserting the USB socket in both directions;

[0022] Figure 6 A three-dimensional diagram of the grounding sleeve of the USB socket for this application;

[0023] Figure 7 For the Figure 6 A cross-sectional view taken along the dashed line AA is shown;

[0024] Figure 8 For the Figure 1 - BB dotted line cross-sectional view shown;

[0025] Figure 9 For the Figure 1 Cross-sectional view along the CC dashed line shown.

[0026] Description of Reference Numerals

[0027] Extraction housing 10; housing 11; first spot weld 111; second spot weld 112; receiving chamber 12; folding portion 13; reverse fold 131; outward fold 132; sealing ring 14; sealant 15; metal housing 20; first housing 21; second housing 22; attachment body 201; bending body 202; welding body 203; pressure column 211; welding foot 221; grounding sleeve 30; rear ring 31; bending end face 32; front ring 33; notch 34; rear Cavity 301; front cavity 302; connector A; insulating body 40; base 41; transition portion 42; docking tongue 43; tail 44; partition 45; conductive terminal group 50; first terminal module 51; second terminal module 52; middle plate 53; first terminal group 511; first insulator 512; second terminal group 521; second insulator 522; plate body 531; solder feet 532, 503; snap-on protrusion 533; contact portion 501; retaining portion 502. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions and advantages of this application more clear, the technical solutions of this application will be described clearly and completely below in conjunction 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.

[0029] See also Figure 1 、 Figure 2 As shown, the reversible USB socket of the present application includes a connector A, a grounding sleeve 30 sleeved on the outside of the connector A, a drawer shell 10 sleeved on the outside of the connector A and the grounding sleeve 30, and a metal shell 20 spot-welded on the outside of the drawer shell 10.

[0030] Please continue reading Figures 2 to 5 As shown, the connector A includes a conductive terminal set 50 and an insulating body 40 that holds the conductive terminal set 50 as a whole.

[0031] The conductive terminal assembly 50 includes a mid-plate 53, a first terminal module 51, and a second terminal module 52 located on the upper and lower sides of the mid-plate 53. The first terminal module 51 includes a first terminal assembly 511 and a first insulator 512 that secures the first terminal assembly 511. The second terminal assembly 52 includes a second terminal assembly 521 and a second insulator 522 that secures the second terminal assembly 521 and the mid-plate 53. The first and second terminal modules 51 and 52 are secured together by the insulating body 40. The first and second terminal assemblies 511 and 521 each include a contact portion 501, a retaining portion 502 extending rearward from the contact portion 501, and a solder leg 503 extending rearward from the retaining portion 502 and out of the insulating body 40.

[0032] The insulating body 40 includes a base 41, a transition portion 42 extending forward from the base 41, a mating tongue 43 extending forward from the transition portion 42, a tail portion 44 located behind the base 41, and a partition 45 formed between the base 41 and the tail 44. The outer diameter of the base 41 is larger than that of the transition portion 42, which in turn is larger than that of the mating tongue 43. The partition 45 between the base 41 and the tail 44 is not formed of plastic and is connected solely through the first terminal set 511 and the second terminal set 521.

[0033] The middle plate 53 includes a body 531, solder legs 532 extending from the body 531 to the insulating body 40, and a snap-on protrusion 533 formed on the outer front end of the body 531. A strip connection portion 534, to which a strip is connected, extends outward from the center of the body 531. The snap-on protrusion 533 extends outward beyond the body 531 and is exposed laterally outside the mating tongue 43 of the insulating body 40.

[0034] In this application, the middle plate 53 is a one-piece structure, that is, the plate body 531 is a one-piece structure with left and right sides. The plate body 531 is provided with a plurality of through-holes for the flow of plastic. The distance between the pair of snap protrusions 533 is greater than the width of the rest of the plate body 531. In other embodiments, the middle plate 53 can be a two-part structure, but in this embodiment, the one-piece structure of the middle plate 53 provides better stability.

[0035] Please continue reading Figures 6 to 8 As shown, the grounding sleeve 30 is a seamless tubular structure formed by stretching a metal sheet. It comprises a rear ring body 31, a bent end face 32 extending from the rear ring body 31 toward the center, and a front ring body 33 extending forward from the bent end face 32. Notches 34 are formed at the front ends of the upper and lower sides of the front ring body 33. A rear cavity 301 is formed within the rear ring body 31, and a front cavity 302 is formed within the front ring body 33.

[0036] Key References Figure 9 As shown, the grounding sleeve 30 is inserted into the outside of the connector A from front to back, and the distance between the pair of snap-in protrusions 533 of the middle plate 53 is greater than the lateral distance of the front ring body 33 of the grounding sleeve 30. Specifically, the snap-in protrusions 533 on both sides extend outwardly from the inner wall surface of the front ring body 33 by a distance h, which is between 0.08-0.12mm, preferably 0.1mm. When the grounding sleeve 30 is inserted backward into the outside of the connector A, the front ring body 33 can only pass through the position of the snap-in protrusions 533 of the middle plate 53 by forced squeezing. However, the excess distance of the snap-in protrusions 533 is only about 0.1mm, allowing it to be easily squeezed in, specifically by deforming the front ring body 33.

[0037] After the grounding sleeve 30 is installed, the rear ring body 31 wraps around the base 41, the bent end face 32 abuts against the front face of the base 41, and the front ring body 33 wraps around the transition portion 42. The material connection portion 534 is located inside the front ring body 33 and can be fixed together by spot welding. The grounding sleeve 30 is generally made of continuous material through stretching.

[0038] Please continue reading Figure 2 、 Figure 8 、 Figure 9As shown, the extraction housing 10 includes a shell 11, a receiving cavity 12 formed by passing through the shell 11 from front to back, and a folded portion 13 formed by reverse bending from the front end of the shell 11. A first spot welding portion 111 is provided on both lateral sides of the shell 11, and a second spot welding portion 112 is provided on the upper and lower surfaces of the shell 11. The folded portion 13 includes a reverse folded portion 131 formed by reverse bending from the front end of the shell 11 and extending backward, and an outward turning portion 132 formed by bending and extending from the reverse folded portion 131 along the radial outer side. A space for forming a sealing ring 14 is formed on the front end surface of the outward turning portion 132. The extraction housing 10 is inserted into the periphery of the connector A from front to back. Specifically, the rear end of the shell 11 is sleeved on the outer surface of the rear ring body 31 of the grounding sleeve 30, and the first spot welding portions 111 on both lateral sides of the shell 11 are welded and connected to the rear ring body 31 by spot welding. The shell 11 surrounds at least a portion of the partition portion 45 , and glue is injected into the partition portion 45 to form a sealant 15 . The sealant 15 seals the partition portion 45 surrounded by the inner surface of the shell 11 .

[0039] The metal housing 20 includes a first housing 21 and a second housing 22 attached to the drawer housing 10 on the upper and lower sides. The first housing 21 and the second housing 22 each include an attachment body 201 attached to the upper or lower surface of the housing 11, a bent body 202 curved downward or upward from the lateral ends of the attachment body 201 to attach to the lateral outer side of the housing 11, and a welded body 203 bent horizontally outward from the bent body 202 and attached together. The welded bodies 203 of the first and second housings 21 and 22 are attached together and spot welded, and the attachment body 201 is spot welded to the upper and lower surfaces of the housing 11, respectively.

[0040] In the present application, the lateral sides of the rear ring body 31 of the grounding sleeve 30 are spot-welded to the lateral sides of the shell 11, thereby leaving the upper and lower surfaces of the shell 11 for spot-welding and fixing with the metal shell 20, avoiding the prior art in which the welding and fixing of the grounding sleeve 30, the extraction shell 10 and the metal shell 20 are all placed at the upper and lower sides, resulting in uneven upper and lower surfaces of the shell 11 after the extraction shell 10 and the grounding sleeve 30 are welded, thereby causing a large error in the fit between the metal shell 20 and the shell 11.

[0041] In other embodiments, the ground sleeve 30 of the present application may further include a through slot on the transverse outer side of the front ring body 33 along the front-to-back direction. This slot allows the snap protrusion 533 of the middle plate 53 to be avoided when the ground sleeve 30 is inserted into the connector A, eliminating the need for compression. To ensure the robustness of the front ring body of the ground sleeve 30, the through slot does not extend through the front face, but only extends rearward to the bent end face 32.

[0042] The rear end of the welding body 203 of the first housing 21 is bent upward to form a pressure post 211. The pressure post 211 is used to press against an object to apply forward pressure to the USB socket, thereby generating sufficient and uniform squeezing force between the sealing ring 14 on the outer periphery of the extraction housing 10 of the USB socket of this application and the frame of the electronic device to achieve waterproofing. The outer side of the welding body 203 of the second housing 22 is bent downward to form a plurality of welding pins 221. These welding pins 221 are used to be soldered to a printed circuit board to increase the strength of the USB socket of this application to be fixed to the printed circuit board. The welding pins 503 and 532 of the first terminal group 511, the second terminal group 521, and the middle plate 53 are all soldered to the printed circuit board and are conductive.

[0043] When the docking plug is inserted into the USB socket of the present application, an elastic structure is provided on the plug shell of the docking plug, which overlaps with the outer surface of the front ring body 33 so that the extraction shell 10, the metal shell 20 and the plug shell are electrically connected and grounded. The bent end surface 32 of the grounding sleeve 30 can abut the front end of the docking plug to prevent plugs of different specifications from being over-inserted and damaging the USB socket.

[0044] The present invention's reversible USB socket forms a seamless grounding sleeve 30 by stretching. The grounding sleeve 30 is then inserted from front to back over the connector A and smoothly inserted by squeezing the snap-on protrusions 533 of the middle plate 53. The grounding sleeve 30 is then spot-welded to the drawer housing 10 on the outer side. The drawer housing 30 is surrounded by a partition 45 to achieve a waterproof seal. Compared to existing methods, the use of sheet metal riveted to the outer periphery of the connector A provides a more stable structure, better retention, and simpler assembly. Furthermore, the manufacturing cost is lower than that of solutions with two upper and lower grounding sheets.

[0045] The technical features of the above embodiments can 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.

[0046] The above embodiments merely represent preferred implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A reversible USB socket, comprising a connector and a grounding sleeve sleeved over the connector, the connector comprising a mid-plate, a first terminal group and a second terminal group located on upper and lower sides of the mid-plate, and an insulating body that integrally holds the mid-plate, the first terminal group, and the second terminal group, the insulating body comprising a base, a transition portion extending forward from the base, and a docking tongue extending forward from the transition portion, the mid-plate comprising a body and a snap-on protrusion protruding laterally outward from the front end of the body, characterized in that: The grounding sleeve includes a rear ring body wrapped around the periphery of the base, a bent end surface extending from the rear ring body along the center direction and wrapped around the front end surface of the base, and a front ring body extending forward from the bent end surface and wrapped outside the transition portion. The distance between the pair of snap protrusions of the middle plate is greater than the lateral distance between the inner wall surfaces of the front ring body. The USB socket is connected to a USB plug. The USB plug includes a plug shell. The plug shell is provided with an elastic structure that overlaps and conducts with the upper and lower surfaces of the front ring body.

2. The reversible USB socket according to claim 1, wherein: The outer diameter of the base is larger than the outer diameter of the transition portion, the outer diameter of the transition portion is larger than the outer diameter of the docking tongue, and the buckle protrusion is exposed outside the docking tongue of the insulating body along the lateral outer side.

3. The reversible USB socket according to claim 2, wherein: When viewed in the longitudinal direction, the width of the buckle protrusion extending outward beyond the inner wall of the front ring body is between 0.08-0.12 mm, and the front ring body of the grounding sleeve is forced backward to squeeze the buckle protrusion into the outside of the connector.

4. The reversible USB socket according to claim 2, wherein: Notches are cut in the middle of the upper and lower sides of the front ring body, and the notches help to improve the elasticity of the front ring body so as to facilitate its insertion into the outside of the connector.

5. The reversible USB socket according to claim 2, wherein: The front ring body is provided with through grooves on both lateral sides for avoiding the buckle protrusions. The through grooves do not pass through the front end of the front ring body but pass through backwards to the bent end surface.

6. The reversible USB socket according to claim 2, wherein: The insulating body also includes a tail formed behind the base and a partition formed between the base and the tail. The base and the tail of the insulating body are connected to the middle plate as a whole through the first terminal group and the second terminal group. Material strip connecting parts are formed on both sides of the plate body of the middle plate. The material strip connecting parts are located in the front ring body and are spot welded to the front ring body.

7. The reversible USB socket according to claim 6, wherein: The USB socket also includes a drawer shell, which includes a shell that is through-through and forms a receiving cavity, and a folded portion formed by folding from the front end of the shell. The rear end of the shell is at least partially surrounded by the outside of the partition portion. After waterproof glue is injected into the partition portion, a seal is formed that fits on the inner wall surface of the shell. The inner wall surface of the shell is at least partially in close contact with the outer surface of the rear ring body. First spot welding portions are formed on both lateral sides of the shell to fix the rear ring body to the shell.

8. The reversible USB socket according to claim 7, wherein: The folding portion includes a reverse folding portion formed by bending in the opposite direction from the front end of the shell and an outward turning portion formed by bending from the reverse folding portion toward the radial outside, and a sealing ring is formed by glue dotting on the outward turning portion.

9. The reversible USB socket according to claim 8, wherein: The USB socket also includes a metal shell, which includes a first shell and a second shell. The first shell and the second shell both include an attachment body attached to the upper surface or lower surface of the shell of the drawing shell, a bent body bent from the lateral sides of the attachment body and wrapping the lateral outer surface of the shell, and a welding body bent outward from the end of the bent body. The welding body of the first shell and the welding body of the second shell are attached together and spot welded, and the attachment body is spot welded to the upper surface and lower surface of the shell.

10. The reversible USB socket according to claim 9, wherein: The rear end of the welding body of the first shell is bent upward to form a pressing column, and the lateral outer side of the second shell is bent downward to form a welding foot.

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