CN215266793U

CN215266793U - USB socket

Info

Publication number: CN215266793U
Application number: CN202120324031.8U
Authority: CN
Inventors: 资华古
Original assignee: Shenzhen Everwin Precision Technology Co Ltd
Current assignee: Shenzhen Everwin Precision Technology Co Ltd
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2021-12-21
Anticipated expiration: 2031-02-04

Abstract

A USB socket comprises a shell, a plug connector and a soldering lug, wherein the shell is provided with a cavity in a front-back penetrating manner, the plug connector is sleeved on the cavity, the soldering lug is used for fixing the plug connector in the shell, the plug connector comprises an upper row terminal group, a lower row terminal group, a middle plate arranged between the upper row terminal group and the lower row terminal group, and an insulating body which fixedly holds the upper row terminal group, the lower row terminal group and the middle plate into a whole, the insulating body comprises a base part and a butt joint tongue part formed by extending forwards from the base part, the outer diameter of the base part is larger than that of the butt joint tongue part, the inner wall surface of the cavity is protruded to form a limiting step, the front end surface of the base part is limited on the limiting step, the soldering lug is placed in the cavity and tightly attached to the rear end face of the base, at least part of the soldering lug is tightly attached to the limiting step, and the soldering lug and the attaching part of the limiting step are fixed together in a spot welding mode. The USB socket is good in waterproof performance and stable in structure.

Description

USB socket

Technical Field

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

Background

The positive and negative USB socket that inserts is widely used in mobile terminals such as cell-phones, along with the increase of battery capacity, the cell-phone speed of charging also requires more and more height, positive and negative USB socket that inserts need possess the ability that heavy current charges as current cell-phone interface that charges, when the electric current is bigger and bigger, conductive terminal except that need greatly reduce resistance, still because conductive terminal part exposes in the air, still probably be stained with user's sweat in summer, so, can directly produce electrochemical reaction when transmitting the heavy current and corrode conductive terminal and cause harm such as charging interface damage or firing. In view of this, in the industry, the corrosion resistance of the conductive terminal is enhanced by electroplating noble metals such as rhodium ruthenium on the conductive terminal, but rhodium ruthenium is very expensive, and how to reduce the cost and the loss is a problem to be mainly solved. And current waterproof positive reverse plug USB socket generally adopts to take out and draws technology shaping shell, but the shell is taken out and is drawn and draw and lead to smooth unable effective fixed plug connector in the shell, generally through behind the shaping metalwork in the plug connector, again with metalwork and casing spot welding fixed, this mode causes product outward appearance face to go wrong.

SUMMERY OF THE UTILITY MODEL

In view of this, it is necessary to provide a USB socket having excellent waterproof performance, stable structural dimensions, and good appearance.

In order to solve the technical problem, the application provides a USB socket, which comprises a housing, a connector and a soldering terminal, wherein a cavity is formed in the housing in a front-back penetrating manner, the connector is sleeved on the cavity, the soldering terminal is used for fixing the connector in the housing, the connector comprises an upper row of terminal group, a lower row of terminal group, a middle plate arranged between the upper row of terminal group and the lower row of terminal group, and an insulating body which fixedly holds the upper row of terminal group, the lower row of terminal group and the middle plate into a whole, the insulating body comprises a base part and a butt joint tongue part formed by extending from the base part in a forward direction, the outer diameter of the base part is larger than that of the butt joint tongue part, a limiting step is formed by protruding the inner wall surface of the cavity, the connector is inserted into the cavity from the rear end forward, the butt joint tongue part crosses the limiting step to enter the front side of the cavity, and the front end surface of the base part is limited on the limiting step, the limiting step at least partially crosses the base part to the rear end face position of the base part, the soldering lug is placed in the cavity and tightly attached to the rear end face of the base part, at least part of the soldering lug is tightly attached to the limiting step, and the soldering lug and the attaching part of the limiting step are fixed together through spot welding.

Preferably, the limiting step comprises a thicker spot welding portion and a thinner abutting portion, the front end surface of the abutting portion is flush with the front end surface of the spot welding portion, the base portion comprises a notch corresponding to the spot welding portion, the front end surface of the base portion abuts against the rear end surface of the abutting portion, and the spot welding portion penetrates through the notch and is exposed to the rear side.

Preferably, a rear end surface of the spot-welded portion is flush with a rear end surface of the base portion, and the tab is attached to the rear end surface of the spot-welded portion and fixed to the spot-welded portion by spot welding.

Preferably, the insulating body further includes a thickened portion extending forward from the base portion and a tail portion extending backward from the base portion, the butt-joint tongue portion extends forward from the thickened portion, the soldering lug includes an outer frame and a through hole formed in the middle of the outer frame, and the tail portion penetrates through the through hole to attach the outer frame to the rear end face of the base portion.

Preferably, the casing adopts aluminium or aluminum alloy die-casting shaping to make, the casing still includes annular main part, the cavity is run through from beginning to end annular main part forms, annular main part's front end is equipped with waterproof circle.

Preferably, preceding tip rear side certainly annular main part outer peripheral face is outwards projected and is formed with the plummer, preceding tip is located the outside protrusion in plummer the place ahead is formed with outer convex part, annular main part is located the plummer with be formed with the annular between the outer convex part, waterproof circle cover is located on the annular or the point gum shaping is in on the annular waterproof circle.

Preferably, the upper row terminal set and the lower row terminal set each include a pair of ground terminals located at the outermost side, two pairs of high-speed signal terminals located at the inner sides of the pair of ground terminals, a pair of power terminals located at the inner sides of the two pairs of high-speed signal terminals, and a plurality of conventional terminals located between the pair of power terminals, the ground terminals, the high-speed signal terminals, the power terminals, and the conventional terminals are collectively referred to as conductive terminals, each conductive terminal includes a contact portion exposed on the upper or lower surface of the docking tongue portion, a holding portion extending rearward from the contact portion and embedded in the insulating body, and a solder tail extending from the holding portion outside the insulating body.

Preferably, a pair of power terminals of the upper row of terminal group is separately punched and connected to the first material belt, a pair of grounding terminals and a conventional terminal of the upper row of terminal group are separately punched and connected to the second material belt, and a high-speed signal terminal and a part of conventional terminal of the upper row of terminal group are separately punched and connected to the third material belt; the high-speed signal terminal, the grounding terminal and part of the conventional terminals of the lower row of terminal group are separately punched and connected on the sixth material belt.

Preferably, the surfaces of contact parts of two pairs of power terminals connected with the first material belt and the fourth material belt are plated with noble metal rhodium ruthenium, the surfaces of the other conductive terminals are plated with gold, the thickness of the conductive terminals connected with the first material belt, the second material belt, the fourth material belt and the fifth material belt is 0.25mm, and the thickness of the conductive terminals connected with the third material belt and the sixth material belt is 0.12 mm.

Preferably, the insulation body includes a first insulator, a second insulator and a third insulator, the first insulator is formed by overlapping, fixing and injection molding the first to third tapes of the upper row of terminal groups, the second insulator is formed by overlapping, fixing and injection molding the fourth to sixth tapes of the lower row of terminal groups, and the third insulator is formed by overlapping, fixing and injection molding the first and second insulators.

This application USB socket adopts die-casting forming's casing, and the extrusion forms spacing step on the wall in the cavity of casing, will the basal portion of plug connector be spacing in on the spacing step, it will to pass through the soldering lug again the basal portion is fixed in the soldering lug with between the spacing step, realize the casing is seamless and need not casing surface spot welding avoids causing the outward appearance bad or because of spot welding causes the size deviation.

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. In the drawings:

FIG. 1 is a perspective view of a USB receptacle of the present application;

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

FIG. 3 is an exploded perspective view of the USB socket of the present application at another angle;

FIG. 4 is a perspective view of the plug member of the USB jack of the present application;

FIG. 5 is a perspective view of an upper row of terminal sets of the USB socket of the present application;

fig. 6 is a perspective view of the lower row of terminal sets of the USB socket of the present application.

Description of the reference numerals

A shell-10; an annular body-11; a cavity-12; front end-13; a carrier table-131; ring groove-132; an outer convex part-133; a waterproof ring-134; an ear-14; an ear body-141; a fixing hole-142; tail leg-15; a limiting step-16; spot welds-161; a holding portion-162; positioning port-163; a bonding pad-17; an outer frame-171; a perforation-172; waterproof glue-18; a plug-in unit-A; an upper row terminal group-20; a lower row terminal set-30; a ground terminal-21; a high-speed signal terminal-22; a power supply terminal-23; a conventional terminal-24; a contact portion-31; a holding portion-32; a fillet-33; a middle plate-40; -an insulator body-50; a base-51; a thickened portion-52; a docking tongue-53; tail-54.

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 and 2, the plugging direction of the USB socket is taken as the front-back direction, and the plugging end is taken as the front. This application USB socket is Type C Type socket, supports positive and negative the inserting, locates including plug connector A, cover the outer casing 10 of plug connector A, cover are located plug connector 10 outer and with casing 10 spot welding is fixed soldering lug 17 and coat in casing 10 tail end is sealed plug connector 10 with the glue 18 in gap between the casing 10.

As shown in fig. 2 and fig. 3, the housing 10 includes an annular main body 11, a cavity 12 penetrating the annular main body 11 in a front-back direction, and a limiting step 16 formed by protruding from an inner wall surface of the cavity 12. The limit step 16 includes a spot welding portion 161 that is thick in the front-rear direction, a holding portion 162 that is integrally formed with the spot welding portion 161 and extends around the inner wall surface of the cavity 12, and a positioning opening 163 that penetrates the limit step 16 in the front-rear direction. The rear end surface of the spot welding portion 161 is located more rearward than the rear end surface of the abutting portion 162, and the front end surface of the spot welding portion 161 and the front end surface of the abutting portion 162 are kept flat. The limit step 16 is of a non-closed loop structure due to the existence of the positioning hole 163.

The front end edge of the ring-shaped body 11 is formed with a front end portion 13, the rear side of the front end portion 13 is formed with a platform 131 protruding outward from the outer peripheral surface of the ring-shaped body 11, the front end portion 13 is formed with an outward protrusion 133 protruding outward in front of the platform 131, and an annular groove 132 formed between the platform 131 and the outward protrusion 133. The cover is equipped with waterproof circle 134 on annular 132, perhaps waterproof circle 134 adopts the mode shaping of gluing on plummer 131 is about to casing 10 is erect, through following glue plummer 131 encircles the round shaping, adopt the fashioned waterproof circle 134 of glue mode with annular 132 laminating is inseparabler, and water-proof effects is better.

The two lateral sides of the annular main body 11 also extend outwards to form an ear 14, and the ear 14 includes a plate-shaped ear main body 141 and a fixing hole 142 formed through the ear 141. The housing 10 is locked to the printed circuit board through the fixing holes 142 of the ears 14. The shell 10 further comprises tail welding feet 15 formed by extending backwards from the rear ends of the two transverse sides of the annular main body 11, and the tail welding feet 15 are welded and fixed with the printed circuit board.

The soldering lug 17 comprises an outer frame 171 and a through hole 172 formed in the outer frame 171, and after the outer frame 171 is buckled into the tail of the shell 10, the outer frame 171 and the spot welding part 161 of the limiting step 16 are fixed together in a spot welding mode.

As shown in fig. 3 to fig. 6, the plug connector a includes an upper row terminal set 20, a lower row terminal set 30, a middle plate 40 disposed between the upper row terminal set 20 and the lower row terminal set 30, and an insulating body 50 holding the upper row terminal set 20, the lower row terminal set 30 and the middle plate 40 together.

The upper terminal group 20 and the lower terminal group 30 each include a pair of ground terminals 21 located at the outermost side, two pairs of high-speed signal terminals 22 located inside the pair of ground terminals 21, a pair of power terminals 23 located inside the two pairs of high-speed signal terminals 22, and a plurality of regular terminals 24 located between the pair of power terminals. The ground terminal 21, the high-speed signal terminal 22, the power terminal 23 and the conventional terminal 24 are collectively referred to as conductive terminals, each of which includes a contact portion 31, a holding portion 32 extending from the contact portion 31 to the rear, and a solder leg 33 extending from the holding portion 32 to the outside of the insulating body 50.

The insulating body 50 includes a base 51, a thickened portion 52 extending forward from the base 51, a butt tongue 53 extending forward from the thickened portion 52, and a tail 54 extending backward from the base 51. The outer diameter of the base portion 51 is larger than the outer diameters of the thickened portion 52 and the tail portion 54, and the contact portions 31 of the upper row terminal set 20 and the lower row terminal set 30 are exposed on the upper and lower surfaces of the mating tongue portion 53 of the insulating body 50, respectively. The holding portion 32 is embedded in the thickened portion 52, the base portion 51 and the tail portion 54, and the solder fillets 33 are exposed on the lower surface of the tail portion 54, arranged in two rows in the front-rear direction and located on the same horizontal plane.

A notch 511 is formed in the position, corresponding to the spot welding portion 161 of the limiting step 16, of the base 51, the plug connector a is inserted into the cavity 12 from back to front, the abutting tongue 53 and the thickened portion 52 pass through the limiting step 16 and extend to the front side of the cavity 12, the front end surface of the base 51 is limited on the rear end surface of the abutting portion 162 of the limiting step 16, the spot welding portion 161 passes through the notch 511 on the base 51 backwards, and finally the rear end surface of the base 51 and the rear end surface of the spot welding portion 161 are on the same horizontal plane; then, the soldering lug 17 is sleeved into the rear side of the cavity 12 from the tail portion 54 of the plug connector a, the soldering lug 17 is attached to the spot welding portion 161 and the rear end face of the base portion 51 after being placed, and the base portion 51 is fixed between the abutting portion 162 and the soldering lug 17 by fixing the spot welding portion 161 and the outer frame 171 of the soldering lug 17 through spot welding. And finally, coating glue 18 in the cavity 12 at the rear end of the soldering lug 17 to seal a gap between the plug connector A and the inner wall surface of the shell 10 so as to realize waterproof performance.

The thicknesses of the power terminal 23, the ground terminal 21 and the at least one conventional terminal 24 of the upper row terminal set 20 are greater than the thicknesses of the high-speed signal terminal 22 and the remaining conventional terminals 24, specifically, the thicknesses of the power terminal 23, the ground terminal 21 and the one conventional terminal 24 are 0.25mm, and the thicknesses of the high-speed signal terminal 22 and the remaining conventional terminals 24 are 0.12 mm. The thickness of the power terminal 23, the at least one ground terminal 21 and the at least one conventional terminal 24 of the lower terminal group 30 is 0.25mm, and the thickness of the remaining one ground terminal 21, the high-speed signal terminal 22 and the remaining conventional terminals 24 is 0.12 mm. The thickened conventional terminal 24 is one near the power terminal 23.

On the material belt connection, the two power terminals 23 of the upper row terminal group 20 are separately punched and formed and connected to the first material belt; the pair of grounding terminals 21 and the thickened conventional terminals 24 of the upper row terminal group 20 are separately punched and formed and connected to a second material belt; the high speed signal terminals 22, conventional terminals 24, having a thickness of 0.12mm, are stamped and formed separately and attached to a third strip of material. The two power terminals 23 of the lower row terminal group 30 are separately punched and connected to the fourth material belt, at least one grounding terminal 21 and one conventional terminal 24 of the lower row terminal group 30 are separately punched and connected to the fifth material belt, and the high-speed signal terminal 22, one grounding terminal 21 and the rest conventional terminals 24 of the lower row terminal group 30 are separately punched and connected to the sixth material belt.

The power terminals 23 of the upper row terminal group 20 and the lower row terminal group 30 are respectively plated with noble metal rhodium ruthenium, and the other conductive terminals are plated with noble metal gold. Thus, only the power supply terminal 23 is electroplated with rhodium ruthenium, so that the cost can be greatly reduced, and the competitiveness can be improved.

When the insulation body 50 is formed, a first insulator is formed by overlapping, fixing and injection molding the first to third material belts of the upper row terminal group 20, a second insulator is formed by overlapping, fixing and injection molding the fourth to sixth material belts of the lower row terminal group 30, and the middle plate is connected with the upper row terminal group 20 or the lower row terminal group 30 through the middle plate material belt and is formed in the first or second insulator in an overlapping, fixing and injection molding manner. Then, the first and second insulators are fixed together and injection molded to form a third insulator, and the first to third insulators constitute the insulator body 50.

This application USB socket adopts die-casting forming's casing 10, and the protrusion forms spacing step 16 on the 12 internal faces of cavity of casing 10, will plug connector A's basal portion 51 spacing in on the spacing step 16, rethread soldering lug 17 will basal portion 51 is fixed in the soldering lug 17 with between the spacing step 16, realize casing 10 is seamless and need not casing 10 surface spot welding avoids causing the outward appearance bad or causes the size deviation because of spot welding.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

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.

The above examples only represent preferred embodiments of the present invention, which are described in more detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A USB socket comprises a shell, a plug connector and a soldering lug, wherein a cavity is formed in the front and back of the shell in a penetrating mode, the plug connector is sleeved on the cavity, the soldering lug is used for fixing the plug connector in the shell, the plug connector comprises an upper row of terminal groups, a lower row of terminal groups, a middle plate arranged between the upper row of terminal groups and the lower row of terminal groups, and an insulating body which fixedly holds the upper row of terminal groups, the lower row of terminal groups and the middle plate into a whole, the insulating body comprises a base part and a butt joint tongue part formed by extending from the front side of the base part, the outer diameter of the base part is larger than that of the butt joint tongue part, the USB socket is characterized in that the inner wall surface of the cavity is protruded to form a limiting step, the plug connector is installed in the cavity from the back end, the butt joint tongue part passes through the limiting step to enter the front side of the cavity, the front end surface of the base part is limited by the limiting step, at least part of the base part passes through the back end surface of the base part, the soldering lug is placed in the cavity and tightly attached to the rear end face of the base, at least part of the soldering lug is tightly attached to the limiting step, and the soldering lug and the attaching part of the limiting step are fixed together in a spot welding mode.

2. The USB socket according to claim 1, wherein the limiting step includes a thicker spot welding portion and a thinner abutting portion, a front end surface of the abutting portion is flush with a front end surface of the spot welding portion, the base includes a notch corresponding to the spot welding portion, the front end surface of the base abuts against a rear end surface of the abutting portion, and the spot welding portion is exposed to the rear side of the base through the notch.

3. The USB socket according to claim 2, wherein a rear end surface of the spot-welded portion is flush with a rear end surface of the base portion, and the tab is fitted over the rear end surface of the spot-welded portion and fixed thereto by spot welding.

4. The USB socket of claim 3, wherein the housing further includes a thickened portion extending forward from the base and a tail portion extending backward from the base, the butt-joint tongue portion extends forward from the thickened portion, the soldering lug includes an outer frame and a through hole formed in the middle of the outer frame, and the tail portion penetrates through the through hole to attach the outer frame to the rear end surface of the base.

5. The USB socket according to claim 4, wherein the housing is made of aluminum or aluminum alloy by die-casting, the housing further comprises a ring-shaped main body, the cavity is formed through the ring-shaped main body in a front-back direction, and a waterproof ring is disposed at a front end portion of the ring-shaped main body.

6. The USB socket according to claim 5, wherein a platform is formed on the rear side of the front end portion protruding outward from the outer peripheral surface of the ring-shaped main body, an outer protrusion is formed on the front side of the platform, a ring groove is formed between the platform and the outer protrusion, and the waterproof ring is sleeved on the ring groove or formed by dispensing glue on the ring groove.

7. The USB socket of claim 1, wherein the upper row terminal set and the lower row terminal set each include a pair of ground terminals located at the outermost side, two pairs of high-speed signal terminals located inside the pair of ground terminals, a pair of power terminals located inside the two pairs of high-speed signal terminals, and a plurality of normal terminals located between the pair of power terminals, the ground terminals, the high-speed signal terminals, the power terminals, and the normal terminals are collectively referred to as conductive terminals, each of the conductive terminals includes a contact portion exposed on the upper or lower surface of the mating tongue, a holding portion extending rearward from the contact portion and embedded in the insulating body, and a solder tail extending from the holding portion outside the insulating body.

8. The USB socket according to claim 7, wherein the pair of power terminals of the upper row of terminal sets are individually stamped and formed and connected to a first material strip, the pair of ground terminals and a normal terminal of the upper row of terminal sets are individually stamped and formed and connected to a second material strip, and the high-speed signal terminals and a portion of the normal terminal of the upper row of terminal sets are individually stamped and formed and connected to a third material strip; the high-speed signal terminal, the grounding terminal and part of the conventional terminals of the lower row of terminal group are separately punched and connected on the sixth material belt.

9. The USB socket of claim 8, wherein the surfaces of the contact portions of the two pairs of power terminals connected to the first and fourth carrier tapes are plated with rhodium and ruthenium, and the surfaces of the other conductive terminals are plated with gold, the thickness of the conductive terminals connected to the first, second, fourth, and fifth carrier tapes is 0.25mm, and the thickness of the conductive terminals connected to the third and sixth carrier tapes is 0.12 mm.

10. The USB socket of claim 9, wherein the housing includes first, second and third insulators, the first through third strips of the upper row of terminals are over-molded to the first insulator, the fourth through sixth strips of the lower row of terminals are over-molded to the second insulator, and the first and second insulators are over-molded to the third insulator.