CN213484029U

CN213484029U - USB socket

Info

Publication number: CN213484029U
Application number: CN202022590912.2U
Authority: CN
Inventors: 张少灿
Original assignee: Shenzhen Everwin Precision Technology Co Ltd
Current assignee: Shenzhen Everwin Precision Technology Co Ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-06-18
Anticipated expiration: 2030-11-10

Abstract

A USB socket comprises terminal groups arranged in an upper row and a lower row, a middle plate arranged between the upper row and the lower row of the terminal groups, an insulating body for fixing the terminal groups and the middle plate into a whole, and a metal shell sleeved outside the insulating body, wherein the insulating body comprises a base part, a thickened part formed by forward extension of the base part and a butt joint tongue part formed by forward extension of the thickened part, each conductive terminal of the terminal groups comprises a contact part with the surface exposed on the upper surface or the lower surface of the butt joint tongue part, a fixing part formed by backward extension of the contact part and a welding pin extending out of the insulating body from the back of the fixing part, and the rear end of the contact part is close to the fixing part to form settlement embedded in the insulating body. The USB socket is low in manufacturing cost.

Description

USB socket

Technical Field

The utility model relates to an electric connector field especially relates to a USB socket.

Background

The Type C USB socket supports positive and negative insertion, and the conventional Type C USB socket, as shown in fig. 1, includes two sets of conductive terminals 30 'disposed oppositely from top to bottom, a middle plate disposed between the two sets of conductive terminals 30', an insulator 20 'combining the conductive terminals 30' and the middle plate into a whole, and a metal shell 10 'sleeved outside the insulator 20'. The insulation body 20 ' includes a base portion 21 ' fixedly connected to the metal shell 10 ', a thickened portion 22 ' extending forward from the base portion 21 ', and a butt tongue portion 23 ' extending forward from the thickened portion 22 '. Each conductive terminal 30 ' includes a contact arm 31 ' exposed on the upper or lower surface of the mating tongue 23 ', and the contact surface of the contact arm 31 ' of the conductive terminal 30 ' extends a long distance on the surface of the mating tongue 23 ' according to the standard specification of the USB-IF association, where h is 2.03mm, and the contact area of the plug terminal with the contact arm 31 ' does not need to be so long. The exposed contact arm 31 'needs to be plated with precious metals, such as gold, platinum and the like, and the electronic device for transmitting large current to realize rapid charging further requires that the contact arm 31' is plated with precious metals, such as rhodium, ruthenium and the like, which have better stability than platinum, so that the cost is high. If the plating area is too large, the plating cost is very high.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model provides a conductive terminal electroplates the cost and is lower, and does not influence the USB socket of performance.

In order to solve the technical problem, the application provides a USB socket, including the terminal group of two rows of settings from top to bottom, arrange the medium plate between two rows of terminal groups from top to bottom in, with terminal group and medium plate fixing insulator and cover as an organic whole locate the outer metal casing of insulator, insulator includes the basal portion, from the thickening portion that the basal portion forward extension formed and from the butt joint tongue portion that the thickening portion forward extension formed, every conductive terminal of terminal group includes the surface exposes in the contact site of the upper and lower surface of butt joint tongue portion, from the fixing part that the contact site backward extension formed and from the fixing part backward extension the outer leg of insulator, the contact site rear end is close to the fixing part forms the sinking portion of burying underground in the insulator.

Preferably, the docking tongue of the insulator body includes a cover portion covering the outside of the subsidence part, and an outer surface of the cover portion is flush with an outer surface of the contact portion.

Preferably, the upper and lower rows of terminal sets include first and second terminal sets respectively located at upper and lower sides, the sinking portion of the first terminal set is formed by bending from the rear end of the contact portion toward the second terminal set, and the sinking portion of the second terminal set is formed by bending from the rear end of the contact portion toward the first terminal set.

Preferably, the front end and the rear end of the sinking portion are respectively formed with a bending portion having a slope, and the outer side of the sinking portion is covered by the covering portion of the insulating body.

Preferably, the upper and lower rows of terminal sets include first and second terminal sets respectively located at upper and lower sides, and the sinking portion is a groove formed by punching from rear ends of contact portions of the first and second terminal sets respectively.

Preferably, each of the first and second terminal groups includes a pair of ground terminals located at the outermost sides, a power terminal located between the pair of ground terminals, and a signal terminal located between the pair of power terminals, the midplane includes a midplane body extending between the ground terminals of the first and second terminal groups, and no midplane exists between the power terminals and the signal terminals.

Preferably, the holding portions of the first and second terminal sets are embedded in the thickened portion and the base portion, the solder legs extend to the rear end of the base portion and are arranged in a row, and the middle plate further includes a fastening portion formed laterally outside the ground terminal and a soldering portion extending from the middle plate main body to the outside.

Preferably, the insulation body comprises a first insulator and a second insulator, the second insulator integrates the terminal group with the middle plate, and the first insulator wraps the second insulator.

Preferably, the length of the contact part in the front-back direction is between 0.9 and 1.1mm, and the length of the subsidence part in the front-back direction is between 0.7 and 0.9 mm.

Preferably, the outer surface of the contact portion of the terminal group is required to be plated with a noble metal, and the surface of the sinking portion is not required to be plated with a noble metal.

This application USB socket is through the sunken portion that buries completely in the insulator body that forms of the contact site rear end with first, the second terminal group of terminal group, and insulator body's butt joint tongue portion is in subside outside shaping of portion and form the cover part in order to incite somebody to action subside the portion and cover completely, so, reduced the terminal group needs electroplate the electroplating cost of noble metal, has reduced more than electroplating area 40%, makes the more environmental protection of product production process, energy-conservation.

Drawings

FIG. 1 is a cross-sectional view of a prior art USB receptacle

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

FIG. 3 is a perspective view of the plug member of the USB jack of the present application;

FIG. 4 is an exploded perspective view of the connector of the USB jack of the present application;

FIG. 5 is a side view of the terminal set and the middle plate of the USB socket of the present application;

fig. 6 is a sectional view taken along the broken line a-a shown in fig. 2.

The attached drawings are as follows:

metal shell-10; an annular outer wall-11; a first weld-12, a second weld-13; a pressure holding part-14; an insulating body 20; a base-21; a thickened portion-22; a docking tongue-23; a cover-24; a first insulator-20 a; a second insulator-20 b; a terminal group-30; a ground terminal-301; a power supply terminal-302; signal terminal-303; a first terminal set-30 a; a second terminal set-30 b; a contact portion-31; bending the end-311; a sink-32; a bending part-321; a holding portion-33; a solder tail-34; a middle plate-40; a middle plate main body-41; a connecting pin-42; a latch portion-43.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

In the present application, the X direction shown in fig. 2 is the front in the front-rear direction or the longitudinal direction, the Y direction is the right in the left-right direction or the lateral direction, and the Z direction is the upper direction in the vertical direction.

Referring to fig. 2 to 6, the USB socket of the present application includes two rows of terminal sets 30, a middle plate 40 disposed between the two rows of terminal sets 30, an insulating body 20 holding the terminal sets 30 and the middle plate together, and a metal shell 10 sleeved outside the insulating body 20.

The metal shell 10 comprises an annular outer wall 11 enclosing a cavity 15, first and

second welding parts

12 and 13 formed by downwards tearing and extending two transverse sides of the annular outer wall 11, and a pressing part 14 protruding from the top surface and the bottom surface of the annular outer wall 11 towards the cavity 15. The pressing portion 14 is provided with a pair of pressing portions respectively on the top surface and the bottom surface of the annular outer wall 11.

The terminal set 30 includes a first terminal set 30a and a second terminal set 30b which are arranged in an up-down isolation manner. Each

terminal group

30a,30b includes a pair of ground terminals 301 located at the outermost side, a pair of power terminals 302 located inside the pair of ground terminals 301, and a plurality of signal terminals 303 located between the pair of power terminals 302. Each conductive terminal of the terminal set 30 includes a contact portion 31, a holding portion 33 extending from a rear portion of the contact portion 31, and a solder leg 34 extending from a rear portion of the holding portion 33 to a rear end of the insulating body 20.

The rear end of the contact portion 31 of each conductive terminal of the first terminal set 30a is recessed toward the second terminal set 30b near the position of the holding portion 33 to form a sinking portion 32; the rear end of the contact portion 31 of each conductive terminal of the second terminal set 30b near the holding portion 33 is recessed toward the first terminal set 30a to form a sinking portion 32. The front ends of the contact portions 31 of the first and

second terminal groups

30a,30b are bent to extend along the front line to form embedded ends 311.

In a specific implementation, the sinking portion 32 may be formed by bending and recessing the rear end of the contact portion 31 of each conductive terminal and extending a distance, so that bending portions 321 with a certain slope are formed at the front and rear ends of the sinking portion 32, and the distance between the contact portions 31 of the first and

second terminal sets

30a and 30b is greater than the distance between the sinking portions 32.

In an embodiment, for some products with thicker conductive terminals of the terminal set 30, the sinking portion 32 may be directly die-cut at the rear end of the contact portion 31 to form a groove structure without extending by bending.

The middle plate 40 includes a middle plate body 41 extending between the ground terminals 301 of the first and

second terminal sets

30a,30b, a connecting leg 42 extending rearward from the middle plate body 41, and a locking portion 43 formed laterally outward of the front end of the middle plate body 41. The fastening portion 43 is formed on the lateral outer side of the ground terminal 301 and exposed to the outside, when the butt plug is inserted, a fastening elastic sheet is arranged on the plug, and the fastening elastic sheet is fastened on the fastening portion 43 to increase the insertion and extraction force.

The insulating body 20 includes a base portion 21, a thickened portion 22 formed by extending forward from the base portion 21, and a butt tongue portion 23 formed by extending forward from the thickened portion 22. The contact surface of the contact portion 31 of the terminal set 30 is exposed on the upper or lower side surface of the docking tongue 23, the holding portion 33 is fixed in the thickened portion 22 and the base portion 21 by molding, and the solder tails 34 extend out of the rear end of the base portion 21 and are arranged in a row. The sinking portion 32 is embedded in the abutting tongue portion 23 near the thickened portion 22, the insulating body 20 includes a covering portion 24 covering the outer side of the sinking portion 32, and the surface of the covering portion 24 is flush with the outer surface of the contact portion 31. After the cover 24 covers the subsidence part 32, the outer surface of the subsidence part 32 is not exposed to the outside.

The insulation body 20 includes a first insulation body 20a and a second insulation body 20b, the first and

second terminal sets

30a,30b and the middle plate 40 are firstly formed into the second insulation body 20b by injection molding, and then the first insulation body 20a is formed outside the second insulation body 20b by injection molding again. The sinker portions 32 of the upper and lower pair of ground terminals 303 are respectively pressed against the upper and lower surfaces of the middle plate body 41 and positioned with respect to each other.

Referring to fig. 6, the length X of the covering portion 24 in the front-back direction is about 0.7 to 0.9mm, preferably 0.82 mm. And the front and rear length L of the exposed part of the contact part 31 is 0.9-1.1 mm, preferably 1.01 mm. Therefore, the exposed part of the contact part 31 is greatly reduced, meanwhile, the area of the conductive terminal for electroplating noble metal is reduced, and the electroplating cost can be greatly reduced.

The USB socket of the application forms the sinking part 32 completely embedded in the insulating body 20 through the rear end of the contact part 31 of the first and

second terminal groups

30a and 30b of the terminal group 30, and the butt joint tongue part 23 of the insulating body 20 is formed on the outer side of the sinking part 32 to form the covering part 32 so as to completely cover the sinking part 32, so that the electroplating cost of the terminal group 30 needing electroplating of precious metal is reduced, the electroplating area is reduced by more than 40%, and the production process of the USB socket is more environment-friendly and energy-saving.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

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 terminal groups arranged in an upper row and a lower row, a middle plate arranged between the upper row and the lower row of the terminal groups, an insulating body for fixing the terminal groups and the middle plate into a whole, and a metal shell sleeved outside the insulating body, wherein the insulating body comprises a base part, a thickened part formed by forward extension of the base part and a butt joint tongue part formed by forward extension of the thickened part, each conductive terminal of the terminal groups comprises a contact part with the surface exposed on the upper surface or the lower surface of the butt joint tongue part, a fixing part formed by backward extension of the contact part and a welding pin extending out of the insulating body from the back of the fixing part, and the USB socket is characterized in that a sinking part embedded in the insulating body is formed at the rear end of the contact part close to the fixing part.

2. The USB receptacle of claim 1, wherein the mating tongue portion of the insulator body includes a cover portion overlying an outer side of the sinker portion, an outer surface of the cover portion being flush with an outer surface of the contact portion.

3. The USB socket according to claim 2, wherein the two rows of terminal sets include first and second terminal sets respectively located at upper and lower sides, the depression portion of the first terminal set is formed by bending from the rear end of the contact portion toward the depression of the second terminal set, and the depression portion of the second terminal set is formed by bending from the rear end of the contact portion toward the depression of the first terminal set.

4. The USB socket according to claim 3, wherein the sinking portion is formed with bent portions having a slope at front and rear ends thereof, and the outer side of the sinking portion is covered with the covering portion of the insulating body.

5. The USB socket according to claim 2, wherein the two rows of terminal sets include a first terminal set and a second terminal set respectively located at upper and lower sides, and the sinking portion is a recess punched from rear ends of the contact portions of the first terminal set and the second terminal set.

6. The USB socket according to claim 4 or 5, wherein the first and second terminal groups each include a pair of ground terminals located at the outermost side, a power terminal located between a pair of the ground terminals, and a signal terminal located between a pair of the power terminals, and the midplane includes a midplane body extending between the ground terminals of the first and second terminal groups, and no midplane exists between the power terminal and the signal terminal.

7. The USB socket as claimed in claim 6, wherein the holding portions of the first and second terminal sets are embedded in the thickened portion and the base portion, the solder tails extend to the rear end of the base portion and are arranged in a row, and the middle plate further includes a locking portion formed laterally outside the ground terminal and a soldering portion extending from the middle plate main body to the outside.

8. The USB socket according to claim 6, wherein the insulator includes first and second insulators, the second insulator integrally combines the terminal group and the middle plate, and the first insulator is wrapped around the second insulator.

9. The USB receptacle according to claim 6, wherein the contact portion has a length in the front-rear direction of 0.9 to 1.1mm, and the depressed portion has a length in the front-rear direction of 0.7 to 0.9 mm.

10. The USB socket of claim 9, wherein the outer surface of the contact portion of the terminal set requires precious metal plating and the surface of the depressed portion does not require precious metal plating.