Waterproof USB socket capable of being plugged positively and negatively

Abstract

A waterproof forward and reverse plugging USB socket comprises a metal shell and a plug connector plugged in the metal shell, and the plug connector comprises a terminal set and an insulation body fixedly holding the terminal set into a whole. The insulating body comprises a base part, a clamping part formed on the front side of the base part, a butt joint tongue part formed by extending forwards from the clamping part, and a partition part formed between the base part and the clamping part. The metal shell comprises a tubular annular outer main body, an outer wrapping ring body formed by bending and extending backwards from the front end of the annular outer main body, an annular inner main body formed by stretching forwards from the rear end of the annular outer main body, and a clamping cavity formed by penetrating through the annular inner main body; the annular inner main body is arranged in the annular outer main body, the insertion cavity is formed in the annular outer main body, the annular outer main body is connected with the rear wall surface of the annular inner main body through the rear wall surface, the insertion piece is inserted into the metal shell from the rear part, the clamping part is clamped in the clamping cavity, the outer diameter of the base part is larger than that of the clamping part, and the outer diameter of the base part is larger than that of the clamping part. The front end face of the base portion forms an abutting end face abutting against the rear wall face, the partition portion at least partially intrudes into the clamping cavity, and waterproof glue is injected into the clamping cavity at the position where the partition portion is located to form a waterproof glue block to achieve waterproofness. The structure is simple, and the waterproof performance is good.

Description

Technical Field

[0001] The present application relates to the field of electrical connection, and in particular to a waterproof 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] Type C USB sockets are generally assembled in electronic devices for docking with plugs. Traditional USB sockets include a connector and a metal shell sleeved on the outside of the connector. If it is a waterproof solution, the metal shell is generally a seamless tubular structure formed by stretching, and the connector includes a first terminal group, a second terminal group, a middle plate placed between the first terminal group and the second terminal group, and an insulating body that holds the first terminal group, the second terminal group and the middle plate as a whole. In order to solve the fixation between the connector and the metal shell of the seamless tubular structure, the connector also includes a fixing member, which is generally made of metal material. The fixing member structure can be a circular sleeve sleeved on the insulating body or a sheet structure buried in the insulating body, and then the fixing member is fixed to the metal shell by spot welding to achieve positioning and fixation of the connector, as disclosed in Patent Application No. 201710405916.9 of the People's Republic of China. However, the above scheme has the problems that the molding scheme of the plug-in component is complicated, the addition of the fixing component affects the space utilization of the plug-in component and the structural layout of the plug-in component, and the spot welding process easily causes unevenness on the surface of the metal shell. Summary of the invention

[0004] In view of this, it is necessary to provide a waterproof reversible USB socket which has a simple structure, can directly limit the connector and is easy to achieve waterproofing.

[0005] In order to solve the above technical problems, the present application provides a waterproof forward and reverse plug-in USB socket, comprising a metal shell and a plug-in component inserted in the metal shell, the plug-in component comprising a terminal group and an insulating body that holds the terminal group as a whole, the insulating body comprising a base, a clamping portion formed on the front side of the base, a docking tongue portion extending forward from the clamping portion, and a partition portion formed between the base and the clamping portion, the metal shell comprising a tubular annular outer body, an outer ring body formed by bending backward and extending from the front end of the annular outer body, and a rear end of the annular outer body. An annular inner body formed by stretching forward, a clamping cavity formed by passing through the annular inner body, an inserting cavity formed in the annular outer body, and a rear wall surface connecting the annular outer body and the annular inner body, the connector is inserted into the metal shell from the rear, the clamping part is clamped in the clamping cavity, the outer diameter of the base is larger than the outer diameter of the clamping part, the front end face of the base forms an abutting end face against the rear wall surface, the partition part at least partially invades the clamping cavity, and waterproof glue is injected into the clamping cavity where the partition part is located to form a waterproof glue block to achieve waterproofing.

[0006] Preferably, the socket also includes a sleeve fixed to the rear end of the metal shell, the sleeve is penetrated from front to back to form a sleeve cavity, the front part of the sleeve is sleeved on the outer surface of the rear end of the annular outer body, and the base of the insulating body is at least partially inserted into the sleeve cavity to be limited and fixed.

[0007] Preferably, the socket also includes a fixed shell fixed on one side surface of the shell, the fixed shell includes a fitting body welded on the surface of the shell and fixed feet extending from both sides of the fitting body, the fixed feet are used to fix the socket on a printed circuit board, and the shell and the annular outer body are fixed together by spot welding.

[0008] Preferably, the base and the clamping part are connected as a whole through the terminal group, and the upper and lower sides of the shell are provided with glue injection holes connected to the partition part. The waterproof glue is injected into the partition part from the glue injection holes, and the waterproof glue fills the partition part and bonds to the inner wall surface of the clamping cavity to achieve waterproofing.

[0009] Preferably, the upper and lower sides of the base of the insulating body are provided with glue injection notches connected to the partition part, and the glue injection notches are formed by being recessed backward from the front end surface part of the base. Glue injection holes are provided on the upper and lower sides of the shell corresponding to the glue injection notches, and waterproof glue is injected into the glue injection notches and the partition part from the glue injection holes. The waterproof glue fills the partition part and bonds to the inner wall surface of the clamping cavity to achieve waterproofing.

[0010] Preferably, a front convex portion is formed in the middle of the glue injection notch, and the front end of the front convex portion does not exceed the supporting end surface of the base. The front convex portion is mainly used to increase the wrapping of the terminal group, and side flow ports are provided on both sides of the front convex portion to facilitate the flow of waterproof glue.

[0011] Preferably, the waterproof glue fills the partition part and then solidifies to form a waterproof glue block, and the waterproof glue block includes a middle part at least partially invading the clamping cavity and an injection part extending from the middle part to the periphery.

[0012] Preferably, the terminal group includes a first terminal group and a second terminal group arranged in two rows in a vertical direction and a middle plate placed between the first terminal group and the second terminal group, the first terminal group, the second terminal group and the middle plate are held as a whole by the insulating body, and each conductive terminal of the terminal group includes a contact portion exposed on the surface of the docking tongue, a holding portion extending backward from the contact portion and buried in the insulating body, and a welding foot extending backward from the holding portion to the base.

[0013] Preferably, the middle plate includes a middle plate body, a snap groove formed at the front ends of the middle plate body on both lateral sides and exposed on the outer side of the docking tongue, and a supporting force arm extending from the rear end of the middle plate body toward the lateral sides to the base, and the lateral width of a pair of the supporting force arms is greater than the lateral width of the clamping cavity.

[0014] Preferably, when viewed from the front-to-back direction, the supporting force arm at least partially overlaps with the rear wall surface, the middle plate main body includes two pieces arranged on both sides in the horizontal direction, the two middle plate main bodies are connected as a whole at the front and rear ends respectively through the front end connecting part and the rear end connecting part, and the supporting force arm is formed by extending from the middle plate main body on both sides in the horizontal direction of the rear end connecting part.

[0015] The waterproof USB socket for forward and reverse plugging in this application is manufactured by a stretching process to form a metal shell, which is formed into an annular outer body, stretched forward from the rear end of the annular outer body to form an annular inner body, and extended backward from the outer edge of the annular outer body to form an outer ring body. The metal shell manufactured by this process achieves a seamless structure. The plug-in is directly inserted into the clamping cavity in the annular inner body, and then the partition part of the plug-in is placed in the shell cavity of the shell sleeved at the rear end of the annular outer body, and the waterproof block is formed by opening a glue injection hole in the shell to connect the partition part to inject glue to form a waterproof waterproof block. 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 A three-dimensional diagram of the waterproof forward and reverse USB socket of this application;

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

[0019] Figure 3 A three-dimensional diagram of the metal housing of the present application;

[0020] Figure 4 A three-dimensional view of the metal casing of the present application from another angle;

[0021] Figure 5 This is a three-dimensional diagram of the connector of the waterproof USB socket of this company;

[0022] Figure 6 This is a three-dimensional exploded view of the connector of the waterproof reversible USB socket of this application;

[0023] Figure 7 For along Figure 5 A cross-sectional view taken along the dashed line AA shown;

[0024] Figure 8 A three-dimensional diagram of the insulating body of the waterproof reversible USB socket of the present application;

[0025] Fig. 9 This is a three-dimensional picture of the waterproof forward and reverse plug-in USB socket connector of the present application after the waterproof glue is injected and cured;

[0026] Fig.10 For along Figure 1 A cross-sectional view taken along the dashed line BB shown;

[0027] Fig.11 For along Figure 1 A cross-sectional view taken along the CC dashed line is shown.

[0028] Figures 12 to 15 The schematic diagram of the process of the metal shell forming method of this application is as follows:

[0029] Fig.12 This is a schematic diagram of the metal sheet connecting strip before drawing and forming;

[0030] Fig.13 This is a schematic diagram of the metal sheet after the first drawing process;

[0031] Fig.14 This is a schematic diagram of the metal sheet after the second drawing process;

[0032] Fig.15 This is a schematic diagram of the metal sheet after the third drawing process.

[0033] Description of Reference Numerals

[0034] Connector-A; metal shell-10; annular outer body-11; plug-in cavity-111; annular inner body-12; clamping cavity-121; rear wall-13; outer ring body-14; extended ring body-141; folding part-142; groove-143; metal shell-20; sleeve shell-21; sleeve shell-211; sleeve shell cavity-212; glue injection holes-213, 223; fixed shell-22; fitting body-221; fixed foot-222; sealing ring-23; waterproof glue block-24; middle part-241; injection part-24 2; insulating body-30; base-31; supporting end face-311; glue injection notch-312; front protrusion-313; side flow port-314; clamping portion-32; docking tongue-33; partition portion-34; first terminal group-41; contact portion-411; retaining portion-412; welding foot-413; second terminal group-42; middle plate-43; middle plate body-431; snap groove-432; supporting force arm-433; tail end connection portion-434; front end connection portion-435; first insulator-44; second insulator-45.

[0035] Main material strip-71; connecting material strip-72; metal plate-80; stretched front plate-81; stretched rear plate-82. DETAILED DESCRIPTION

[0036] 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.

[0037] This application is Figure 1 The 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.

[0038] See also Figure 1 , Figure 2 As shown, the waterproof reversible USB socket of the present application includes a connector A, a metal shell 10 sleeved outside the connector A, a metal shell 20 partially sleeved on the outer periphery of the rear end of the metal shell 10, a waterproof rubber block 24 and a sealing ring 16 arranged at the front end of the metal shell 10.

[0039] Please continue reading Figure 2 , Figures 5 to 9 , Fig.11As shown, the connector A includes a first terminal group 41, a second terminal group 42, a middle plate 43, and an insulating body 30 that holds the first terminal group 41 and the second terminal group 42 as a whole. The first terminal group 41 and the second terminal group 42 can be collectively referred to as a terminal group, and the present application is not only applicable to a structure with two upper and lower terminal groups, but also to a structure with only one terminal group.

[0040] The first terminal group 41 is fixed as a whole by the first insulator 44, and the second terminal group 42 and the middle plate are fixed as a whole by the second insulator 45. The first insulator 44 and the second insulator 45 are superimposed and then injection molded into the insulating body 30. In this application, the insulating body 30 refers to the combination of the first insulator 44, the second insulator 45 and the injection molded insulating body 30. The middle plate 43 can be provided separately, or integrally molded with the second terminal group 421 on the second insulator 422.

[0041] Each conductive terminal of the first terminal set 41 and the second terminal set 42 includes a contact portion 411 , a retaining portion 412 extending rearward from the contact portion 411 , and a solder foot 413 extending rearward from the retaining portion 412 .

[0042] The insulating body 30 includes a base 31, a clamping portion 32 formed in front of the base 31, a docking tongue 33 extending forward from the clamping portion 32, and a partition 34 formed between the base 31 and the clamping portion 32. There is no plastic in the space where the partition 34 is located, and the base 31 and the clamping portion 32 are connected as a whole through the first terminal group 41, the second terminal group 42 and the middle plate 43. The outer diameter of the base 31 is larger than the outer diameter of the clamping portion 32. In particular, the lateral sides of the base 31 extend outward beyond the lateral outer side of the clamping portion 32, and the outer diameter of the clamping portion 32 is larger than the outer diameter of the docking tongue 33. The contact portions 411 of the first terminal group 41 and the second terminal group 42 are respectively exposed on the upper or lower side surface of the docking tongue 33, the retaining portion 412 is buried in the insulating body 30, and the welding foot 413 extends out of the rear end of the insulating body 30.

[0043] The middle plate 43 is placed between the first terminal group 41 and the second terminal group 42. The middle plate 43 includes a pair of middle plate bodies 431 arranged on both sides in the transverse direction, a snap groove 432 formed on both sides in the transverse direction of the front end of the middle plate body 431 and exposed to the transverse outer side of the insulating body 30, and a pair of abutting force arms 433 extending from the rear end of the middle plate body 431 along both sides in the transverse direction. The pair of middle plate bodies 431 are connected together at the front end through a front end connecting portion 435, and the pair of middle plate bodies 431 are connected together at the rear end through a rear end connecting portion 434, so that the middle plate bodies 431 are integrated to strengthen the strength of the middle plate bodies 431. The middle plate body 431 is wrapped in the insulating body 30, and the pair of abutting force arms 433 of the middle plate 43 are wrapped and extend on both sides in the transverse direction of the base 31. In another embodiment, the middle plate body 431 is an integral structure, and does not need to be designed as a left and right two-piece structure.

[0044] The front end face of the base 31 constitutes an abutting end face 311. A glue injection notch 312 connected to the partition part 34 is formed in the middle of the front side of the base 31 adjacent to the partition part 34, and the lateral width of the glue injection notch 312 is smaller than the lateral width of the clamping part 32. The glue injection notch 312 protrudes forward in the middle of the vertical direction to form a front convex part 313, and the front end face of the front convex part 313 does not exceed the abutting end face 311 of the base 31. The rear end connection part 434 of the middle plate 43 is partially formed in the front convex part 313, and there is a gap between the front end edge of the rear end connection part 434 and the rear end face of the clamping part 32 for glue to flow. In another embodiment, when the middle plate body 431 is an integral structure, it is only necessary to cut a hole in the middle plate body 431 corresponding to the position of the partition part 34 to form a flow hole. It should be noted that the front protrusion 313 is an optional feature and can be omitted in actual applications. The function of the front protrusion 313 is to reduce the length of the first terminal group 41, the second terminal group 42 and the middle plate 43 in the suspended state to avoid excessive injection molding or injection pressure causing terminal deformation and poor quality. The lateral sides of the front protrusion 313 are provided with side flow ports 314 that pass through from top to bottom to facilitate the upward and downward flow of glue.

[0045] Please continue reading Figures 2 to 4 , Fig.10 , Fig.11As shown, the metal shell 10 includes an annular outer body 11, an outer ring body 14 formed by stretching backward from the front end of the annular outer body 11, an annular inner body 12 stretched inward from the rear end of the annular outer body 11 to the inside of the annular outer body 11, a rear wall surface 13 formed at the rear ends of the annular outer body 11 and the annular inner body 12, a clamping cavity 121 formed by passing through the annular inner body 12, and an insertion cavity 111 formed in the annular outer body 11.

[0046] The extension length of the annular outer body 11 is greater than the extension length of the annular inner body 12, the inner diameter of the clamping cavity 121 is adapted to the clamping portion 32 of the connector A, and the inner diameter of the insertion cavity 111 is greater than the inner diameter of the clamping cavity 121. The insertion cavity 111 includes a first portion 112 located at the front side of the annular inner body 12 and a second portion 113 located between the annular outer body 11 and the annular inner body 12. The rear wall surface 13 is a planar structure. The outer ring body 14 includes an extended ring body 141 stretched in the opposite direction from the front end of the annular outer body 11 and attached to the outer surface of the annular outer body 11, a folded portion 142 folded laterally outward from the rear end of the extended ring body 141, and a groove 143 formed at the bending point of the extended ring body 141 and the folded portion 142. A sealing ring 23 is provided on the extended ring body 141 and the folded portion 142, and the sealing ring 23 is formed on the outer ring body 14 by sleeve mounting or dispensing.

[0047] The metal shell 20 includes a sleeve shell 21 partially fixed on the annular outer body 11 and a fixed shell 22 fixed on one side of the sleeve shell 21. The sleeve shell 21 is a tubular structure, and includes a sleeve shell 211, a sleeve shell cavity 212 that passes through the sleeve shell 211 from front to back, and a glue injection hole 213 provided on both upper and lower sides of the rear end of the sleeve shell 211. The front side of the sleeve shell 211 is sleeved on the outer surface of the annular outer body 11 and fixed together by spot welding, the rear end of the sleeve shell 211 extends backward beyond the annular outer body 11, and the glue injection hole 213 is located behind the annular outer body 11. The fixed shell 22 includes a fitting body 221 that fits on one side of the sleeve shell 211 and a fixed foot 222 that extends from the fitting body 221 along the lateral outer side, and the fitting body 221 is fixed to the surface of the sleeve shell 211 by spot welding. The fitting body 221 is also provided with a glue injection hole 223 at a position corresponding to the glue injection hole 213 on one side of the sleeve housing 211. The fixing housing 22 is used to fix the waterproof USB socket of the present application on a printed circuit board.

[0048] Please refer to Figures 7 to 11 As shown, the assembly method of the waterproof USB socket of the present application is as follows:

[0049] First, the metal shell 20 is spot welded to the metal shell 10, and the sealing ring 16 is glued on the metal shell 10; then, the plug connector A is inserted into the metal shell 10 from the back to the front along the clamping cavity 121, and the docking tongue portion 33 extends over the clamping cavity 121 to the plug-in cavity 111, and the clamping portion 32 is clamped in the clamping cavity 121, and the abutting end surface 311 of the base portion 31 abuts against the rear wall surface 13 of the metal shell 10. Upper limit; at this time, the supporting force arm 433 of the middle plate 43 is at least partially located behind the rear wall surface 13 to strengthen the strength of the base 31 to provide sufficient limiting force; the partition part 34 of the plug-in component A and the base 31 are inserted into the housing cavity 212 of the housing 21, and the injection hole 213 on the housing 211 is connected to the partition part 34 through the injection notch 312 on the base 31, and the front side of the partition part 34 at least partially invades the clamping cavity 121. Finally, the glue is injected into the partition part 34 from the injection holes 213 and 223 and solidified to form a waterproof glue block 24, which includes a middle part 241 that partially invades the clamping cavity 121 and an injection part 242 that fills the injection hole 213 and the rest of the partition part 34.

[0050] The socket of the present application can achieve good waterproof performance by partially invading the partition part 34 into the clamping cavity 121 and then filling the partition part 34 and the inner wall of the clamping cavity 121 with glue. At the same time, the glue is simultaneously filled between the partition part 34 and the inner wall of the shell cavity 212 of the shell body 211 to further enhance the waterproof performance.

[0051] In one embodiment, the partition portion 34 may not invade the clamping cavity 121, but a protruding structure protruding forward to be flush with the rear end surface of the clamping portion 32 is set on the lateral sides of the base 31, and the protruding structure is abutted against the rear wall surface 13 of the metal shell 10, so that the partition portion 34 is only enclosed in the shell cavity 212 of the shell 21 for glue injection and waterproofing.

[0052] In another embodiment, if the USB socket does not require waterproofing, the partition portion does not need to be provided, and the base portion 31 and the clamping portion 32 can be connected as one, and there is no need to inject glue to form the waterproof glue block 24. There is no need to provide a glue injection gap 312 in the middle of the base portion 31.

[0053] Please continue reading Figures 12 to 15 As shown, the forming method of the metal shell 10 of the present application will be described in detail below. The method includes the following steps:

[0054] S10. Provide Fig.12 The metal sheet 80 shown connected to the strips 71, 72;

[0055] The metal sheet 80 in this step is preferably made of stainless steel, and the metal sheet 80 is a circular plate-shaped structure. The metal sheet 80 is connected to the main material belt 71 through a plurality of connecting material belts 72, and the main material belt 71 surrounds the outer periphery of the metal sheet 80, and the main material belt 71 is provided with a material pulling hole 73. The connecting material belts 72 are preferably four connecting material belts 72 that evenly distribute the circular metal sheet 80 to the main material belt 71, and the connecting material belts 72 have a certain buffer space between the metal sheet 80 and the main material belt 71 through the curved structure.

[0056] S20, punching and stretching the metal plate 80 to form the outer ring body 14;

[0057] In this step, the structural features of the outer ring body 14 can be formed by stamping and stretching through multiple sub-steps, mainly forming the extended ring body 141, the folded portion 142 and the groove 143. The sub-steps mainly include first extruding and stamping to form the structure of the folded portion 142 and the groove 143. At the same time, the outer edge of the folded portion 142 is connected to the metal plate 80, and then the middle part of the folded portion 142 is stretched forward to form the extended ring body 141. When the extended ring body 141 is formed, the front end of the extended ring body 141 is in a closed state and forms a stretched front plate 81.

[0058] S30, stretching the stretched front plate 81 backward to form the annular outer body 11;

[0059] In this step, the stretching front plate 81 is stretched backward along the inner side of the outer ring body 14 , and the stretching length is greater than the length of the outer ring body 14 to form the annular outer body 11 , and the rear end of the annular outer body 11 is closed to form a stretching rear plate 82 .

[0060] S40, stretching the stretched plate 82 forward to form the annular inner body 12;

[0061] In this step, a closing plate is formed on the front end surface of the annular inner body 12 . At this time, the closing plate needs to be cut off to allow the annular inner body 12 to penetrate front and back to form a clamping cavity 121 .

[0062] The forming method of the metal shell of the present application is formed by a stretching process. The only disadvantage of this method is that the thickness of the outer ring body 14 is slightly greater than the thickness of the annular outer body 11, and the thickness of the annular outer body 11 is slightly greater than the thickness of the annular inner body 12.

[0063] The metal shell, the forming method of the metal shell and the waterproof USB socket of the present application manufacture the metal shell 10 through a stretching process, so that the metal shell 10 forms an annular outer body 11, stretches forward from the rear end of the annular outer body 11 to form an annular inner body 12, and extends backward from the outer edge of the annular outer body 11 to form an outer ring body 14, and the plug-in component A is directly inserted into the clamping cavity 121 in the annular inner body 12. Then, the partition part 34 of the plug-in component A is placed in the casing cavity in the casing 21 sleeved at the rear end of the annular outer body 11, and the partition part 34 is connected to form a waterproof rubber block 24 through the glue injection hole in the casing 21.

[0064] 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.

[0065] 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 waterproof reversible USB socket, comprising a metal shell and a connector inserted in the metal shell, the connector comprising a terminal group and an insulating body that holds the terminal group as a whole, the insulating body comprising a base, a clamping portion formed on the front side of the base, a docking tongue portion extending forward from the clamping portion, and a partition portion formed between the base and the clamping portion, characterized in that: The metal shell includes a tubular annular outer body, an outer ring body formed by bending and extending backward from the front end of the annular outer body, an annular inner body formed by stretching forward from the rear end of the annular outer body, a clamping cavity formed by passing through the annular inner body, a plug-in cavity formed in the annular outer body, and a rear wall surface connecting the annular outer body and the annular inner body. The plug-in component is inserted into the metal shell from the rear, the clamping part is clamped in the clamping cavity, the outer diameter of the base is larger than the outer diameter of the clamping part, the front end surface of the base forms an abutting end surface against the rear wall surface, the partition part at least partially invades the clamping cavity, and waterproof glue is injected into the clamping cavity where the partition part is located to form a waterproof glue block to achieve waterproofing.

2. The waterproof reversible USB socket as claimed in claim 1, characterized in that: The waterproof reversible USB socket also includes a sleeve fixed to the rear end of the metal shell, the sleeve is connected front to back to form a sleeve cavity, the front part of the sleeve is sleeved on the outer surface of the rear end of the annular outer body, and the base of the insulating body is at least partially inserted into the sleeve cavity to be limited and fixed.

3. The waterproof reversible USB socket as claimed in claim 2, characterized in that: The socket also includes a fixed shell fixed on one side surface of the shell, the fixed shell includes a fitting body welded on the surface of the shell and fixing feet extending from both sides of the fitting body, the fixing feet are used to fix the socket on a printed circuit board, and the shell and the annular outer body are fixed together by spot welding.

4. The waterproof reversible USB socket as claimed in claim 2, characterized in that: The base and the clamping part are connected as a whole through the terminal group. The upper and lower sides of the shell are provided with glue injection holes connected to the partition part. Waterproof glue is injected into the partition part from the glue injection holes. The waterproof glue fills the partition part and adheres to the inner wall surface of the clamping cavity to achieve waterproofing.

5. The waterproof reversible USB socket as claimed in claim 2, characterized in that: The upper and lower sides of the base of the insulating body are provided with glue injection notches connected to the partition part, and the glue injection notches are formed by being recessed backward from the front end surface part of the base. The upper and lower sides of the shell are provided with glue injection holes corresponding to the glue injection notches. Waterproof glue is injected into the glue injection notches and the partition part from the glue injection holes. The waterproof glue fills the partition part and is bonded to the inner wall surface of the clamping cavity to achieve waterproofing.

6. The waterproof reversible USB socket as claimed in claim 5, characterized in that: The middle of the glue injection notch protrudes forward to form a front convex portion, the front end of the front convex portion does not exceed the supporting end surface of the base, the front convex portion is mainly used to increase the wrapping of the terminal group, and the front convex portion has side flow ports on both sides to facilitate the flow of waterproof glue.

7. The waterproof reversible USB socket as claimed in claim 6, characterized in that: The waterproof glue is filled with the partition part and solidified to form a waterproof glue block. The waterproof glue block includes a middle part that at least partially penetrates into the clamping cavity and an injection part extending from the middle part to the periphery.

8. The waterproof reversible USB socket as claimed in claim 2, characterized in that: The terminal group includes a first terminal group and a second terminal group arranged in two rows in a vertical direction, and a middle plate placed between the first terminal group and the second terminal group. The first terminal group, the second terminal group and the middle plate are fixed as a whole by the insulating body. Each conductive terminal of the terminal group includes a contact portion exposed on the surface of the docking tongue portion, a retaining portion extending backward from the contact portion and buried in the insulating body, and a welding foot extending backward from the retaining portion to the base.

9. The waterproof reversible USB socket as claimed in claim 8, characterized in that: The middle plate includes a middle plate body, a snap groove formed at the front ends of the middle plate body on both sides and exposed on the outer side of the docking tongue, and a supporting force arm extending from the rear end of the middle plate body toward the lateral sides to the base, and the lateral width of a pair of the supporting force arms is greater than the lateral width of the clamping cavity.

10. The waterproof reversible USB socket according to claim 9, characterized in that: When viewed from the front-to-back direction, the supporting force arm at least partially overlaps with the rear wall surface, and the middle plate body includes two pieces arranged on both sides in the horizontal direction. The two middle plate bodies are connected as a whole at the front and rear ends respectively through the front end connecting part and the rear end connecting part, and the supporting force arm is formed by extending from the middle plate body on both sides in the horizontal direction of the rear end connecting part.

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