Forward and reverse plugging USB socket

Abstract

A USB socket capable of being plugged forwards and backwards comprises a metal outer shell and a plug connector, the metal outer shell is communicated in the front-back direction to form a containing cavity, the plug connector is fixedly arranged in the containing cavity in a sleeved mode, the metal outer shell comprises an annular shell body and installation grooves formed in the inner wall faces of the upper side and the lower side of the containing cavity, and the USB socket further comprises grounding pieces fixed in the installation grooves of the metal outer shell. The grounding piece comprises a piece body fixed in the mounting groove and a contact elastic arm obliquely extending into the accommodating cavity, and the contact elastic arm is in electric contact with the surface of a metal shell of a butt joint plug, so that the USB socket and the metal shell of the butt joint plug are conducted to form a grounding path. The USB socket can effectively provide a grounding path between the socket and the metal shell of the plug.

Description

Technical Field

[0001] The present application relates to the field of electrical connection, and in particular to a forward and reverse plug-in USB socket. Background Art

[0002] Type C USB interface has been widely used in various electronic devices for data transmission and charging, etc. At the same time, it has also derived design solutions with different functional focuses and structures to adapt to different application environments and customer needs; such as high current, waterproof, high-frequency data transmission, etc.

[0003] Current handheld devices, such as mobile phones, are generally required to have certain waterproof properties, and the USB interface, as an external charging and data transmission port, needs to be exposed to the outside of the fuselage for plug-in charging or data transmission. In this way, the USB socket itself needs to have waterproof properties to ensure the waterproofness of the fuselage. Traditional USB sockets generally include a plug-in and a metal shell sleeved outside the plug-in. To facilitate waterproofing, the metal shell generally includes a seamless tube (generally manufactured by a drawing process) and an outer shell fixed to the outside of the seamless tube by spot welding. In order to make the seamless tube seamless, its inner wall is smooth and the limiting structure cannot be processed. It is necessary to embed a metal strip in the plug-in to fix it with the seamless tube by spot welding. This solution is relatively complex and costly. Patent No. 202020158328.7 of the People's Republic of China discloses a shell powder metallurgy solution, which forms a seamless metal shell with a limiting structure by powder metallurgy. This solution is relatively simple and reliable compared to the stamping metal shell solution. The metal shell of the USB socket in the above scheme is used to be inserted into the metal shell of the USB plug. Although the metal shell of the USB plug may be in contact and conductive with the metal shell of the USB socket, the conductive state is not stable, and the formed grounding path is not reliable, which is not conducive to shielding of high-frequency transmission. Summary of the invention

[0004] In view of this, it is necessary to provide a reversible USB socket with a good ground shielding path.

[0005] In order to solve the above technical problems, the present application provides a reversible USB socket, including a metal shell that penetrates front and back to form a receiving cavity and a connector that is sleeved and fixed in the receiving cavity, the metal shell includes an annular shell and mounting grooves provided on the inner wall surfaces of the upper and lower sides of the receiving cavity, the USB socket also includes a grounding plate fixed in the mounting groove of the metal shell, the grounding plate includes a plate body fixed in the mounting groove and a contact spring arm that extends obliquely into the receiving cavity, the contact spring arm is in electrical contact with the surface of the metal shell of the docking plug so that the USB socket and the metal shell of the docking plug are connected to form a grounding path.

[0006] Preferably, the metal shell is a seamless tube structure manufactured by a powder metallurgy process, and the grounding plate comprises a plate body fitted in the mounting groove, and the plate body and the annular shell are fixed together by spot welding.

[0007] Preferably, the front end of the mounting groove is open, and the mounting groove includes mounting groove side walls located on both sides of the mounting groove and a mounting groove rear wall located on the rear side of the mounting groove, and a slot is provided on the mounting groove side walls, and the grounding plate has outer portions inserted into the slots on both sides of the plate body, and the grounding plate is spot-welded to the annular shell through the outer portions.

[0008] Preferably, an outer edge of the sheet body is torn to form an elastic tear fastening portion, one end of the tear fastening portion extends beyond the surface of the sheet body and is tightly held by the slot to prevent the grounding sheet from falling off.

[0009] Preferably, the outer edge of the sheet body is torn to form an elastic tear fastening part, one end of the tear fastening part extends beyond the surface of the sheet body, and a card slot is provided at the corresponding position of the slot. After the tear fastening part is inserted, it is clamped in the card slot to limit the grounding sheet.

[0010] Preferably, a cut hole is cut out of the sheet body of the grounding sheet at a position corresponding to the contact spring arm, and the contact spring arm includes a horizontal extension portion extending backward from the sheet body, an inclined extension arm extending backward from the horizontal extension portion and obliquely toward the receiving cavity, a hook portion bent from the end of the inclined extension arm toward a direction away from the receiving cavity, and a contact portion formed at the bending point between the inclined extension arm and the hook portion, and the contact portion extends into the receiving cavity.

[0011] Preferably, the rear end of the inner wall surface of the receiving cavity of the metal shell is recessed to form a recessed portion, the plug-in connector includes a first terminal module, a second terminal module, a middle plate located between the first terminal module and the second terminal module, and an insulating body that holds the first terminal module, the second terminal module, and the middle plate as a whole, the insulating body includes a base, a docking tongue extending forward from the base, and a tail formed behind the base, a partition portion is formed between the base and the tail, the base is at least partially inserted into the recessed portion to limit the position, and the outer periphery of the partition portion is surrounded by the inner wall surface of the receiving cavity.

[0012] Preferably, the first terminal module includes a first terminal group and a first insulator that holds the first terminal group as a whole, the second terminal module includes a second terminal group and a second insulator that holds the second terminal group as a whole, each conductive terminal of the first terminal group and the second terminal group includes a contact portion exposed on the surface of the docking tongue portion, a holding portion extending backward from the contact portion and wrapped by the insulating body, and a welding foot extending backward from the holding portion to the rear side of the insulating body, and the base and the tail are connected as a whole with the second terminal group through the first terminal group.

[0013] Preferably, waterproof glue is injected into the partition portion, and the partition portion is surrounded by the inner wall surface of the accommodating cavity. After the waterproof glue is fully filled, it solidifies to form a waterproof glue block.

[0014] Preferably, a front sealing groove is provided on the outer side of the front end of the annular shell of the metal shell, the annular shell protrudes outward at the rear side of the front sealing groove to form an outer convex portion, and a front sealing ring is formed in the front sealing groove by sleeve setting or dispensing molding; the USB socket also includes a fixed shell fixed to the outside of the metal shell, the fixed shell includes a first fixed shell and a second fixed shell, the first fixed shell and the second fixed shell both include a top wall attached to the upper surface or lower surface of the annular shell, an arc-shaped side wall bent and extended from the lateral sides of the top wall to form a welding surface bent from the lateral sides of the arc-shaped side wall to the lateral outside, the welding surfaces of the first fixed shell and the second fixed shell are attached together and spot welded, and the two sides of the rear end of the second fixed shell are bent upward to form a crimping hook, and the crimping hook is used to push the crimping hook forward through other objects in the device, so that the USB socket maintains a forward thrust so that the front sealing ring and the outer frame of the device body are kept in tight crimping to achieve sealing.

[0015] The reversible USB socket of the present application is provided with an installation groove on the inner wall surface of the metal shell, and then a grounding plate is provided in the installation groove. The grounding plate is connected to the metal shell of the docking plug, so that the metal shell of the plug and the metal shell of the socket are connected to form a grounding path, thereby achieving a better shielding effect. 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 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 A three-dimensional diagram of the metal shell of the USB socket for this application;

[0020] Figure 4 For along Figure 1 A cross-sectional view taken along the dashed line BB shown;

[0021] Figure 5 This is a three-dimensional picture of the grounding plate of the USB socket of this application;

[0022] Figure 6 A three-dimensional diagram of the connector for inserting the USB socket forward and reversely in this application;

[0023] Figure 7 This is a three-dimensional exploded view of the connector for inserting the USB socket forward and reversely in this application;

[0024] Figure 8 For along Figure 1 A cross-sectional view taken along the dashed line AA is shown.

[0025] Description of Reference Numerals

[0026] Connector-A; metal shell-10; annular shell-11; front sealing groove-12; outer protrusion-13; receiving cavity-14; installation groove-15; installation groove side wall-151; slot-152; installation groove rear wall-153; front sealing ring-16; recessed part-17; fixed shell-20; first fixed shell-21; second fixed shell-22; top wall-211; arc-shaped side wall-212; welding surface-213; crimping hook-214; waterproof rubber block-18; grounding sheet-30; sheet body-31; outer side-32; tear fastening part- 33; cutting hole-34; contact spring arm-35; horizontal extension portion-351; inclined extension arm-352; contact portion-353; hook portion-354; first terminal module-41; second terminal module-42; middle plate-43; contact portion-411; retaining portion-412; welding foot-413; first insulator-414; first terminal group-415; second terminal group-421; second insulator-422; insulating body-44; base-441; transition portion-442; docking tongue-443; tail-444; partition portion-445. DETAILED DESCRIPTION

[0027] 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.

[0028] This application is Figure 1The X direction is the front in the front-back direction, the Y direction is the right in the lateral direction, and the Z direction is the top in the vertical direction.

[0029] See also Figure 1 , Figure 2 As shown, the reversible USB socket of the present application includes a connector A, a metal shell 10 sleeved on the outside of the connector A, a fixed shell 20 welded and fixed to the outside of the metal shell 10, a waterproof rubber block 18 for sealing the connector A and the metal shell 10 by glue, a front sealing ring 16 provided at the front end of the metal shell 10 and a grounding plate 30 fixed inside the metal shell 10.

[0030] Please continue reading Figure 6 , Figure 7 As shown, the connector A includes a first terminal module 41 , a second terminal module 42 , a middle plate 43 , and an insulating body 44 that holds the first terminal module 41 and the second terminal module 42 as a whole.

[0031] The first terminal module 41 includes a first terminal group 415 and a first insulator 414 that holds the first terminal group 415 as a whole. The second terminal module 42 includes a second terminal group 421 and a second insulator 422 that holds the second terminal group 421 as a whole. Each conductive terminal of the first terminal group 415 and the second terminal group 421 includes a contact portion 411, a holding portion 412 extending backward from the contact portion 411, and a welding foot 413 extending backward from the fixing portion 412. The middle plate 43 can be provided separately, or can be integrally formed with the second terminal group 421 on the second insulator 422. The middle plate 43 is a conventional technology and will not be described here.

[0032] The first terminal module 41 , the second terminal module 42 and / or the middle plate 43 are stacked together and then injection molded again to form the insulating body 44 .

[0033] The insulating body 44 includes a base 441, a transition portion 442 extending forward from the base 441, a butt tongue 443 extending forward from the transition portion 442, and a tail 444 formed behind the base 441. A partition 445 is formed between the base 441 and the tail 444. There is no plastic in the space where the partition 445 is located. The base 441 and the tail 444 are connected as a whole through the first terminal group 415 and the second terminal group 421. The waterproof rubber block 18 is filled in the partition 445 and solidified.

[0034] Please continue reading Figures 3 to 5As shown, the metal shell 10 includes an annular shell 11 with a receiving cavity 14 formed therethrough, mounting grooves 15 opened on the upper and lower inner wall surfaces of the receiving cavity 14 , and a front sealing groove 12 formed at the front end of the annular shell 11 .

[0035] The rear side of the front sealing groove 12 of the annular housing 11 protrudes outward to form an outer convex portion 13, and the front side of the outer convex portion 13 forms the front sealing groove 12. A front sealing ring 16 is arranged in the front sealing groove 12. The front sealing ring 16 can be formed first and then sleeved in the front sealing groove 12, or it can be formed in the front sealing groove 12 by dispensing glue and solidified. The front sealing ring 16 formed in the latter way is bonded in the front sealing groove 12, and the sealing effect is better.

[0036] The inner wall surfaces on both sides of the receiving cavity 14 are recessed at the rear end to form a recessed portion 17. After the plug A is inserted into the receiving cavity 14 from the rear end, the base 441 of the insulating body 44 is inserted into the recessed portion 17 on both sides to limit the plug A. The recessed portion 17 can also be formed by being recessed around the receiving cavity 14.

[0037] The front end of the mounting slot 15 is open, and includes mounting slot side walls 151 located on both sides of the mounting slot 15 and a mounting slot rear wall 153 located on the rear side of the mounting slot 15. The mounting slot side walls 151 are provided with a slot 152, and the grounding sheet 30 is inserted into the mounting slot 15 through the slot 152. The recessed portion 17 is located behind the mounting slot rear wall 153.

[0038] The grounding sheet 30 includes a sheet body 31 and at least one contact spring arm 35 formed by stamping on the sheet body 31. Specifically, the sheet body 31 is formed with an outer side portion 32 inserted into the slot 152 on both sides in the horizontal direction, and the edge of the outer side portion 12 is stamped and torn to form a tear fastening portion 33 protruding to one side. The tear fastening portion 33 has a certain elasticity, so that the outer side portion 32 is pressed into the slot 152. The outer side portion 32 is also fixed to the annular shell 11 by spot welding at the corresponding position of the annular shell 11. In one embodiment, a card slot (not shown) is provided in the slot 152, and after the grounding sheet 30 is inserted, the tear fastening portion 33 is snapped into the card slot.

[0039] The sheet body 31 is provided with a cutout hole 34 at a position corresponding to the contact spring arm 35. The contact spring arm 35 is formed by extending backward from the front side of the cutout hole 34. The contact spring arm 35 includes a horizontal extension portion 351 extending horizontally backward from the front side of the cutout hole 34, an inclined extension arm 352 extending backward from the horizontal extension portion 351 and toward the receiving cavity 14, a hook portion 354 bent from the rear end of the inclined extension arm 352 toward a direction away from the receiving cavity 14, and a contact portion 353 formed at the end of the inclined extension arm 352. The contact portion 353 extends into the receiving cavity 14 to be in conductive contact with the metal shell of the docking plug, and a gap is formed between the hook portion 354 and the inner wall surface of the mounting slot 15 to provide deformation space for the contact spring arm 35.

[0040] In another embodiment, in order to reduce the thickness of the metal shell 10, the installation groove 15 is only provided with a groove structure with a front end open, and the slot 152 structure is not required. The grounding plate 30 is directly fixed to the annular shell 11 by spot welding in the space of the installation groove 15.

[0041] Please continue reading Figure 2 , Figure 3 , Figure 4 , Figure 8 As shown, the fixed shell 20 is fixed to the outside of the metal shell 10 to fix the USB socket to a printed circuit board or other objects. The fixed shell 20 includes a first fixed shell 21 and a second fixed shell 22. The first fixed shell 21 and the second fixed shell 22 both include a top wall 211 attached to the upper surface or lower surface of the annular shell 11, an arc-shaped side wall 212 formed by bending and extending from both sides of the top wall 211, and a welding surface 213 formed by bending from the arc-shaped side wall 212 to the outside. The welding surfaces 213 of the first fixed shell 21 and the second fixed shell 22 are attached together and fixed by spot welding, and the top wall 211 is fixed to the outer surface of the annular shell 11 by spot welding.

[0042] The two sides of the rear end of the second fixed shell 22 are bent upward to form a crimping hook 214, and the crimping hook 214 is used to push the crimping hook 214 forward through other objects in the device, so that the USB socket maintains a forward thrust to keep the front sealing ring 16 and the outer frame of the device body tightly crimped to achieve sealing.

[0043] During the assembly process, the connector A is first inserted into the receiving cavity 14 of the metal shell 10 from the rear end to the front, and the base 441 of the insulating body 44 is pressed into the recessed portion 17 at the rear end of the metal shell 10 to limit the forward position of the connector A and to limit the position. Then, waterproof glue is injected into the partition portion 445 from the rear side, and the partition portion 445 is filled with glue. The partition portion 445 is surrounded by the inner wall surface of the metal shell 10 so that the waterproof glue is bonded to the inner wall surface of the metal shell 10 at the same time. After the waterproof glue is cured, the waterproof glue block 18 is formed to achieve sealing and waterproofing.

[0044] The reversible USB socket of the present application is provided with a mounting groove 15 on the inner wall surface of the metal shell 10, and a grounding plate 30 is further provided in the mounting groove 15. The grounding plate 30 is connected to the metal shell of the docking plug, so that the metal shell of the plug is connected to the metal shell of the socket to form a grounding path, thereby achieving a better shielding effect.

[0045] The technical features of the above embodiments may be arbitrarily combined. 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 only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A reversible USB socket, comprising a metal shell with a receiving cavity formed through the front and back and a connector fixed in the receiving cavity, characterized in that: The metal shell includes an annular shell and mounting grooves provided on the inner wall surfaces at the upper and lower sides of the accommodating cavity. The USB socket also includes a grounding plate fixed in the mounting groove of the metal shell. The grounding plate includes a plate body fixed in the mounting groove and a contact spring arm obliquely extending into the accommodating cavity. The contact spring arm is in electrical contact with the surface of the metal shell of the docking plug so that the USB socket and the metal shell of the docking plug are connected to form a grounding path.

2. The reversible USB socket as claimed in claim 1, characterized in that: The metal shell is a seamless pipe structure manufactured by powder metallurgy process. The grounding plate comprises a plate body fitted in the installation groove. The plate body and the annular shell are fixed together by spot welding.

3. The reversible USB socket as claimed in claim 2, characterized in that: The front end of the mounting groove is open, and the mounting groove includes mounting groove side walls located on both sides of the mounting groove and a mounting groove rear wall located on the rear side of the mounting groove. A slot is provided on the mounting groove side walls, and the sheet body of the grounding plate is provided with outer portions inserted into the slots on both sides of the sheet body, and the grounding plate is spot-welded to the annular shell through the outer portions.

4. The reversible USB socket as claimed in claim 3, characterized in that: The outer edge of the sheet body is torn to form an elastic tear fastening portion, one end of the tear fastening portion exceeds the surface of the sheet body and is tightly held by the slot to prevent the grounding sheet from falling off.

5. The reversible USB socket as claimed in claim 3, characterized in that: The outer edge of the sheet body is torn to form an elastic tear fastening part, one end of the tear fastening part exceeds the surface of the sheet body, and a card slot is provided at the corresponding position of the slot. After the tear fastening part is inserted, it is clamped in the card slot to limit the grounding sheet.

6. The reversible USB socket as claimed in claim 3, characterized in that: The grounding sheet has a cutout hole formed at a position corresponding to the contact spring arm, and the contact spring arm includes a horizontal extension portion extending backward from the sheet, an inclined extension arm extending backward from the horizontal extension portion and obliquely toward the receiving cavity, a hook portion bent from the end of the inclined extension arm toward a direction away from the receiving cavity, and a contact portion formed at the bending point between the inclined extension arm and the hook portion, and the contact portion extends into the receiving cavity.

7. The reversible USB socket as claimed in claim 6, characterized in that: The rear end of the inner wall surface of the receiving cavity of the metal shell is recessed to form a recessed portion, the plug-in connector includes a first terminal module, a second terminal module, a middle plate located between the first terminal module and the second terminal module, and an insulating body that holds the first terminal module, the second terminal module, and the middle plate as a whole, the insulating body includes a base, a docking tongue extending forward from the base, and a tail formed behind the base, a partition portion is formed between the base and the tail, the base is at least partially inserted into the recessed portion to limit the position, and the outer periphery of the partition portion is surrounded by the inner wall surface of the receiving cavity.

8. The reversible USB socket as claimed in claim 7, characterized in that: The first terminal module includes a first terminal group and a first insulator that holds the first terminal group as a whole, the second terminal module includes a second terminal group and a second insulator that holds the second terminal group as a whole, each conductive terminal of the first terminal group and the second terminal group includes a contact portion exposed on the surface of the docking tongue portion, a holding portion extending backward from the contact portion and wrapped by the insulating body, and a welding foot extending backward from the holding portion to the rear side of the insulating body, and the base and the tail are connected as a whole with the second terminal group through the first terminal group.

9. The reversible USB socket as claimed in claim 8, characterized in that: Waterproof glue is injected into the partition part, and the partition part is surrounded by the inner wall surface of the receiving cavity. After the waterproof glue is fully filled, it solidifies to form a waterproof glue block.

10. The reversible USB socket as claimed in claim 1, characterized in that: A front sealing groove is provided on the outer side of the front end of the annular shell of the metal shell, and the annular shell protrudes outwardly at the rear side of the front sealing groove to form an outer convex portion, and a front sealing ring is formed in the front sealing groove by sleeve setting or dispensing molding; the USB socket also includes a fixed shell fixed outside the metal shell, and the fixed shell includes a first fixed shell and a second fixed shell, and the first fixed shell and the second fixed shell both include a top wall attached to the upper surface or lower surface of the annular shell, an arc-shaped side wall bent and extended from the lateral sides of the top wall to form a welding surface, and the welding surface of the first fixed shell and the second fixed shell is bent to the lateral outside to form a welding surface, the welding surfaces of the first fixed shell and the second fixed shell are attached together and spot welded, and the two sides of the rear end of the second fixed shell are bent upward to form a crimping hook, and the crimping hook is used to push the crimping hook forward through other objects in the device, so that the USB socket maintains a forward thrust so that the front sealing ring and the outer frame of the device body are kept in tight crimping to achieve sealing.

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