CN110707471A

CN110707471A - Waterproof USB socket

Info

Publication number: CN110707471A
Application number: CN201910976826.4A
Authority: CN
Inventors: 唐敏; 杨伟
Original assignee: JUST CONNECTOR KUNSHAN CO Ltd
Current assignee: JUST CONNECTOR KUNSHAN CO Ltd
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-01-17

Abstract

A waterproof USB socket comprises a plug connector and a metal shell fixed outside the plug connector, wherein the plug connector comprises a plurality of terminal groups and an insulating body which integrates the terminal groups, the insulating body comprises a base part, a butt joint tongue part formed by forward extension of the base part and a tail part formed by backward extension of the base part, an insertion cavity is formed by the front and the back of the metal shell in a through mode, the outer diameter of the base part is smaller than that of the tail part, an annular convex rib is formed on the periphery of the base part, the metal shell is fixed on the periphery of the tail part, the USB socket further comprises a waterproof sleeve inserted into the insertion cavity from the front end of the metal shell, a butt joint cavity is formed by the front and the back of the waterproof sleeve in a through mode, and the inner wall surface of the rear end of the butt joint cavity is clamped; the USB socket has simple waterproof performance and is low in cost.

Description

Waterproof USB socket

Technical Field

The present application relates to the field of connectors, and more particularly, to a waterproof USB socket.

Background

The Type C USB socket is widely used in electronic devices such as mobile phones, and is used as a data transmission and charging interface. The connector generally comprises a connector and a metal shell fixed outside the connector, wherein the connector comprises a first terminal group, a second terminal group, a middle plate arranged between the first terminal group and the second terminal group, and an insulating body which integrates the first terminal group, the second terminal group and the middle plate. Limited to the problem of the consistency of the USB socket and the printed circuit board, the metal shell is usually torn to form solder feet to enhance the holding force with the printed circuit board, thereby causing the metal shell to have holes or gaps, which cannot be waterproof. The existing solution is to prevent water by arranging the metal inner shell and the metal outer shell, namely, the metal inner shell is of a seamless structure, the welding leg is arranged on the metal outer shell, the metal outer shell is fixed on the metal inner shell in a spot welding manner, and then waterproof glue is coated on the tail of the socket to prevent water, so that the manufacturing cost of the scheme is high.

Disclosure of Invention

Accordingly, a waterproof USB socket with simple waterproof performance and low cost is needed.

In order to solve the above technical problem, the present application provides a waterproof USB socket, comprising a connector and a metal shell fixed outside the connector, the plug connector comprises a plurality of terminal groups and an insulating body which integrates the terminal groups into a whole, the insulating body comprises a base part, a butt joint tongue part formed by forward extension of the base part and a tail part formed by backward extension of the base part, the metal shell is penetrated from front to back to form an insertion cavity, the outer diameter of the base part is smaller than that of the tail part, the periphery of the base part is provided with an annular convex rib, the metal shell is fixed on the periphery of the tail part, the USB socket also comprises a waterproof sleeve which is inserted into the insertion cavity from the front end of the metal shell, the waterproof sleeve is formed with a butt joint cavity in a front-back through mode, and the inner wall face of the rear end of the butt joint cavity is clamped on the periphery of the annular convex rib to achieve waterproof.

Preferably, the terminal group includes a first terminal group and a second terminal group respectively exposed from the upper surface and the lower surface of the docking tongue, the connector further includes a middle plate located between the first terminal group and the second terminal group, the insulation body injection-molds the first terminal group and the second terminal group and the middle plate into a whole, the insulation body further includes a cladding portion located between the base portion and the docking tongue, and an outer diameter of the cladding portion is smaller than an outer diameter of the base portion.

Preferably, the base portion comprises a front end portion and a rear end portion, the annular convex rib is arranged on the periphery of the rear end portion, grooves are formed in the surface and the front end face of the front end portion, and a concave portion communicated with the grooves is formed in the surface of the cladding portion.

Preferably, the USB socket further includes a stopper disposed in the groove and the recessed portion, and the stopper includes a first plate portion fastened in the groove on the surface of the front end portion, a stopper portion bent and extended from the first plate portion and fastened in the groove on the front end surface of the front end portion, and a second plate portion bent and extended from the stopper portion and fastened in the recessed portion.

Preferably, the horizontal both sides of the recess of front end portion surface are equipped with the fixed orifices, the horizontal both ends of first board are bent and are formed with the insertion portion that inserts in the fixed orifices, the insertion portion be equipped with the barb that the fixed orifices was interfered, the surface of first board is equipped with protruding face.

Preferably, the waterproof jacket is formed by injection molding of a hard plastic material, the waterproof jacket further comprises a seamless annular body and an extension portion formed by bending the front end edge of the annular body outwards, and a waterproof ring is arranged on the inner side of the extension portion and located at the periphery of the front end of the annular body.

Preferably, the waterproof jacket is manufactured by a drawing process by using a metal plate, the waterproof jacket further comprises a seamless annular body and an extension portion formed by bending the front end edge of the annular body outwards, and a waterproof ring is arranged on the outer periphery of the front end of the annular body and positioned on the inner side of the extension portion.

Preferably, spot welding is performed on the positions of the metal shell and the waterproof sleeve, which correspond to the protruding surfaces of the stopper, so that the protruding surfaces of the stopper, the waterproof sleeve and the metal shell are fixed into a whole through spot welding.

Preferably, metal casing still including the casing that is the loop configuration and tear a plurality of fillets that the casing formed, the casing be equipped with the cladding in the back casing of insulator's afterbody periphery, insulator's afterbody periphery is equipped with a plurality of card holes, back casing is equipped with the card and goes into card in the card hole.

Preferably, an annular groove is formed in the rear end portion of the base portion, the annular convex rib is a waterproof ring sleeved in the annular groove, the metal shell is firstly sleeved and fixed outside the tail portion of the insulating body, and then the waterproof sleeve is inserted into the insertion cavity from the front end of the metal shell and enables the inner wall surface of the butt joint cavity of the waterproof sleeve to clamp the waterproof ring.

The waterproof USB socket of this application is through the basal portion periphery of the insulator of plug connector sets up annular protruding muscle or waterproof ring, then insert a waterproof cover in metal casing's the cavity that inserts, waterproof cover's rear end pressure joint in metal casing with it is waterproof to realize the rear end between annular protruding muscle or the waterproof ring, has reduced manufacturing cost.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application.

FIG. 1 is a combination view of the waterproof USB socket of the present application;

FIG. 2 is an exploded perspective view of the waterproof USB receptacle of the present application;

FIG. 3 is an exploded perspective view of the waterproof USB socket according to the present application from another angle;

FIG. 4 is a perspective view of the connector and stopper of the waterproof USB socket of the present application;

FIG. 5 is an exploded perspective view of the plug and stopper of the waterproof USB socket of the present application;

fig. 6 is a perspective view of the waterproof USB socket of the present application with the waterproof cover removed;

fig. 7 is a sectional view taken along the broken line a-a shown in fig. 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1 to 3, the waterproof USB socket of the present application includes a connector 40, a waterproof cover 20 covering the connector 40, and a metal shell 10 covering the waterproof cover 20 and the connector 40. In the present application, the X direction shown in fig. 1 is the front, and the Y direction is the lateral right direction.

As shown in fig. 4 and fig. 5, the plug connector 40 includes a first terminal set 41, a second terminal set 42, a middle plate 43 located between the first and second terminal sets 41 and 42, and an insulating body 44 integrally formed by the first and second terminal sets 41 and 42 and the middle plate 43.

The insulative housing 44 includes a base 441, a cover 442 extending forward from the base 441, a mating tongue 442 extending forward from the cover 442, and a tail 444 extending rearward from the base 441. The tail 444 has an outer diameter greater than that of the base 441, the base 441 has an outer diameter greater than that of the shroud 442, and the shroud 442 has an outer diameter greater than that of the docking tongue 443. The base part 441 comprises a front end part 446 close to the cladding part 442 and a rear end part 445 close to the tail part 444, an annular convex rib is arranged on the periphery of the rear end part 445, grooves 447 are formed in the upper surface and the front end edge of the front end part 446, a recessed part 448 communicated with the grooves 447 is arranged on the surface of the cladding part 442, and fixing holes 449 are formed in two transverse sides of the grooves 447. The upper and lower surfaces of the tail 444 are respectively provided with a locking hole 45.

The stopper 50 includes a first plate 51 that is inserted into the groove 447 on the upper surface of the base 441, a stopping step 52 that is bent from the front end of the first plate 51 and extends to be received in the groove 447 on the front end edge of the base 441, and a second plate 53 that is bent from the stopping step 52 and extends to be inserted into the recess 448 on the surface of the cover 442. The two transverse ends of the first plate part 51 are also bent and extended to form pins 54 which are clamped in the fixing holes 449, and the pins 54 are provided with barbs for interference fixing with the fixing holes 449. The first plate 51 has a projection surface 55 on its upper surface. The stopper 50 is made of metal and is used for stopping the excessive insertion of the plug and preventing the damage to the insulating body 44.

As shown in fig. 2 and fig. 6, the metal shell 10 includes a shell 11 having a ring structure, an insertion cavity 12 penetrating through the shell, and a plurality of solder tails 13 formed by tearing the shell 11. The shell is provided with a rear shell 13 which is wrapped on the periphery of the tail part 44, and the rear shell 13 is provided with a card 15 which is clamped in the card hole 45 so that the metal shell 10 is fixed outside the insulating body 44.

As shown in fig. 2, fig. 3 and fig. 7, the waterproof case 20 includes a seamless annular body 21, a butt-joint cavity 25 penetrating the annular body 21 in the front-back direction, and an extension portion 24 bent outward from the front end edge 22 of the annular body 21. The upper and lower surfaces of the ring body 21 are respectively recessed into the docking cavity 25 to form protrusions 26, and the protrusions 26 can increase the friction force between the waterproof jacket 20 and the docking plug. The rear end 23 of the annular body 21 is sleeved on the annular convex rib on the rear end 445 of the base part 441 of the insulating body 44, so that the annular body 21 is tightly pressed and connected with the annular convex rib to realize water resistance.

The waterproof jacket 20 is sleeved into the insertion cavity 12 of the metal shell 10 from the front end of the metal shell 10 after the metal shell 10 is fixed on the insulating body 44, and the rear end 23 of the waterproof jacket 20 is located between the annular convex rib and the metal shell 10. The waterproof jacket 20 is formed by injection molding of hard plastic materials, and is low in cost. The periphery of the front end of the waterproof sleeve 20 is sleeved with a waterproof ring 30, and the waterproof ring 30 is limited behind the extension portion 24 and is prevented from protruding forwards. The waterproof ring 30 is in compression joint with the mobile phone shell to achieve waterproof. The waterproof ring 30 is sandwiched between the extension portion 24 and the front end edge of the metal case 10.

In another embodiment, the waterproof case 20 is made of a metal material (such as stainless steel) by a drawing process, and is a seamless ring body 21. After the waterproof cover 20 is inserted between the annular rib of the base 441 and the metal shell 10, the protruding surface 55 on the upper surface of the first plate 51 of the stopper 50, the annular body 21, and the metal shell 10 are fixed together by spot welding. Therefore, the force of the plug applied to the stopping portion 52 of the stopper 50 can be transmitted to the metal shell 10, and the problem of the loosening of the solder tails of the first and second terminal sets 41, 42 caused by excessive insertion force can be further prevented.

In another embodiment, the rear end 44 of the base 441 of the insulating body 44 is provided with an annular groove, and a waterproof ring is sleeved in the annular groove and replaces the annular rib to be tightly pressed with the rear end 23 of the waterproof sleeve 20 for waterproof. It is also understood that the waterproof ring is an embodiment of the annular bead. The waterproof ring is made of silica gel.

A gap for inserting the waterproof cover 20 exists between the rear end 445 of the base 441 of the insulating body 44 and the metal case 10.

The waterproof USB socket of this application is through the basal portion 441 periphery of the insulator 44 of plug connector 40 sets up annular protruding muscle or waterproof ring, then metal casing 10 inserts a waterproof cover 20 in inserting the cavity 12, waterproof cover 20's rear end pressure joint in metal casing 10 with it is waterproof to realize the rear end between annular protruding muscle or the waterproof ring, has reduced manufacturing cost.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. The utility model provides a waterproof USB socket, includes the plug connector and is fixed in the outer metal casing of plug connector, the plug connector includes a plurality of terminal group and will terminal group shaping is in insulator of an organic whole, insulator includes the basal portion, certainly the butt joint tongue that the basal portion was preceding to be extended to form reaches certainly the afterbody that the basal portion was backward extended to form, link up around the metal casing and be formed with and insert the cavity, its characterized in that, the external diameter of basal portion is less than the external diameter of afterbody, the basal portion periphery is formed with annular protruding muscle, metal casing is fixed in the afterbody periphery, the USB socket still includes certainly the metal casing front end inserts waterproof cover in the insertion cavity, link up around the waterproof cover and be formed with the butt joint chamber, the internal face centre gripping of butt joint chamber rear end in annular protruding muscle periphery realizes waterproofly.

2. The waterproof USB socket according to claim 1, wherein the terminal set includes a first terminal set and a second terminal set respectively exposed on the upper and lower surfaces of the mating tongue, the connector further includes a middle plate located between the first and second terminal sets, the insulating body injection-molds the first and second terminal sets and the middle plate into a single body, the insulating body further includes a covering portion located between the base portion and the mating tongue, and an outer diameter of the covering portion is smaller than an outer diameter of the base portion.

3. The waterproof USB socket according to claim 2, wherein the base includes a front end and a rear end, the annular rib is provided on an outer periphery of the rear end, a groove is provided on a surface of the front end and a front end surface of the front end, and a recess communicating with the groove is provided on a surface of the cover.

4. The waterproof USB socket according to claim 3, wherein the USB socket further comprises a stopper disposed in the recess and the recess, and the stopper comprises a first plate portion fastened in the recess of the front surface, a stopper bent and extended from the first plate portion and fastened in the recess of the front surface of the front portion, and a second plate portion bent and extended from the stopper and fastened in the recess.

5. The waterproof USB socket according to claim 4, wherein fixing holes are formed at both lateral sides of the groove of the front end surface, insertion portions inserted into the fixing holes are formed at both lateral ends of the first plate portion by bending, the insertion portions are provided with barbs interfering with the fixing holes, and a protruding surface is formed on the surface of the first plate portion.

6. The waterproof USB socket according to claim 3, wherein the waterproof case is injection molded from a hard plastic material, and further comprises a seamless annular body and an extension portion bent outward from a front edge of the annular body, and a waterproof ring is provided on an outer periphery of a front end of the annular body inside the extension portion.

7. The waterproof USB socket according to claim 5, wherein the waterproof case is made of a metal plate by a drawing process, and further comprises a seamless annular body and an extension portion bent outward from a front end edge of the annular body, and a waterproof ring is provided on an outer periphery of a front end of the annular body inside the extension portion.

8. The waterproof USB socket according to claim 7, wherein the metal shell and the waterproof cover are spot-welded at positions corresponding to the protruding surfaces of the stoppers, so that the protruding surfaces of the stoppers, the waterproof cover and the metal shell are integrally spot-welded.

9. The waterproof USB socket according to claim 6 or 8, wherein the metal shell further includes a casing having a ring structure and a plurality of solder tails formed by tearing the casing, the casing has a rear casing covering the outer periphery of the rear portion of the insulator, the outer periphery of the rear portion of the insulator has a plurality of locking holes, and the rear casing has a locking piece locked in the locking hole.

10. The waterproof USB socket according to claim 9, wherein an annular groove is formed at a rear end of the base, the annular rib is a waterproof ring that is fitted in the annular groove, the metal shell is fitted and fixed to the outer side of the tail of the insulator, and the waterproof sleeve is inserted into the insertion cavity from the front end of the metal shell so that the waterproof ring is clamped by an inner wall surface of the abutting cavity of the waterproof sleeve.