CN113922135A

CN113922135A - USB socket

Info

Publication number: CN113922135A
Application number: CN202111159365.5A
Authority: CN
Inventors: 邰军
Original assignee: Kunshan Jiahua Electronics Co Ltd
Current assignee: Kunshan Jiahua Electronics Co Ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-01-11

Abstract

The application discloses a USB socket which comprises a terminal module and a metal shell piece, wherein the metal shell piece is arranged around the terminal module; the metal shell piece is in a cylindrical shape with openings at two ends, and the metal shell piece and the terminal module jointly define a plugging space for inserting the butting connector; the terminal module comprises an insulating body and a plurality of terminals fixed with the insulating body; the insulating body comprises a base and a tongue part formed by extending forwards from the base; still include metal inner casing spare, be located the inside of metal outer casing spare, metal inner casing spare is fixed with the base and is fixed with metal outer casing spare, and metal inner casing spare will terminal module and metal outer casing spare are integrative to be fixed. This USB socket overall structure is stable and in order to do benefit to miniaturized design.

Description

USB socket

Technical Field

The application relates to the field of connectors, in particular to a USB socket.

Background

The prior art refers to chinese utility model patent CN213484029U, which discloses a Type C USB socket, including terminal groups arranged in two rows, a middle plate arranged between the two rows of terminal groups, an insulator and a cover, wherein the insulator and the cover are integrated with the terminal group and the middle plate, the insulator includes a base, a thickened portion formed by forward extending the base, and a butt tongue portion formed by forward extending the thickened portion. The insulating body and the metal shell piece jointly define a plugging space which is open forward.

Wherein, a plurality of bulges are formed at the rear end of the metal shell part, and the metal shell part is correspondingly matched with the base part in a clamping way to form a groove, so that the metal shell part is assembled and fixed with the insulating body. This assembly and securing requires a wider base structure (in the mating connector insertion direction), which increases the overall length of the receptacle; in addition, the fixing of the metal shell part and the insulating body still has the problem of unreliability.

In addition, after the butting connector is inserted into the inserting and pulling space, the insertion stop of the butting connector is realized through the front end face of the base part, the front end face of the base part needs to bear a large impact force from the butting connector, the base part is easy to damage, and the insulating body and the metal shell piece are easy to loosen.

Therefore, it is necessary to design a new USB socket to overcome the above-mentioned drawbacks of the prior art.

Disclosure of Invention

The utility model aims at providing a novel USB socket, its overall structure is stable and in order to do benefit to miniaturized design.

In order to achieve the above purpose, the present application provides the following technical solutions:

a USB socket comprises a terminal module and a metal shell piece surrounding the terminal module;

the metal shell piece is in a cylindrical shape with openings at two ends, and the metal shell piece and the terminal module jointly define a plugging space for inserting the butting connector;

the terminal module comprises an insulating body and a plurality of terminals fixed with the insulating body;

the insulating body comprises a base and a tongue part extending forwards from the base;

each terminal comprises a contact part at least partially exposed out of the surface of the tongue part, a fixing part which is formed by extending backwards from the contact part and is fixed in the insulating body, and a butt joint pin which extends backwards from the fixing part and out of the insulating body;

a plurality of terminals are arranged into an upper row terminal group and a lower row terminal group, the contact part of each terminal of the upper row terminal group is exposed from the upper surface of the tongue part, and the contact part of each terminal of the lower row terminal group is exposed from the lower surface of the tongue part;

still include metal inner casing spare, be located the inside of metal outer casing spare, metal inner casing spare is fixed with the base and is fixed with metal outer casing spare, and metal inner casing spare will terminal module and metal outer casing spare are integrative to be fixed.

Further, the metal inner shell member is formed with a stop plate covering at least a part of a front surface of the base portion facing the insertion and extraction space, the stop plate forming a stop surface for stopping excessive insertion of the mating connector.

Further, the stop plate is annular and covers the entire front surface of the base facing the plugging space.

Furthermore, the position-stopping plate extends backwards to form an anti-return clamping foot, and the anti-return clamping foot penetrates through the base part backwards from the front surface of the base part and is hung and buckled on the rear surface of the base part.

Furthermore, the stop plate extends backwards to form a combination plate, and the combination plate is attached to the inner surface of the metal shell piece and is fixed with the metal shell piece.

Furthermore, the combination plate is in a ring shape and is attached to the inner surface of the metal shell part for a circle.

Further, the rear end edge of combination board further extends and is formed with the anti-moving back cardboard, the anti-moving back cardboard is hung and is detained on the rear surface of basal portion, metal inner casing spare is equipped with two, and rides on the basal portion along upper and lower direction respectively.

Further, the metal inner shell member is integrally formed by extending the rear end edge of the metal outer shell member.

Further, the metal inner shell spare includes first inner shell spare and the second inner shell spare of mutually independent, first inner shell spare forms the stop board with the joint plate, second inner shell spare be formed with correspond the butt in limiting plate on the rear surface of base and extend by the limiting plate is integrative to form and correspond the fixed plate of laminating in the internal surface of metal outer shell spare, the fixed plate is fixed with metal outer shell spare.

Further, the first inner housing member and the second inner housing member are identical in shape.

Further, the rear surface of insulator covers there is the back waterproof layer, back waterproof layer combines with the internal surface of metal casing spare, the butt joint foot of terminal passes the back waterproof layer backward and protruding the stretching out, still includes back insulating block, back insulating block is with all the butt joint foot of terminal is integrative fixed, fill between insulating block and the insulator back waterproof layer.

Compared with the prior art, the beneficial effects of this application are: the utility model discloses USB socket overall structure is stable and be favorable to miniaturized design.

Drawings

Fig. 1 is a perspective view of a USB socket according to a first embodiment of the present application.

Fig. 2 is a perspective view of the USB socket shown in fig. 1 from another angle.

Fig. 3 is a partially exploded perspective view of the USB socket shown in fig. 2, particularly illustrating a perspective view of the rear waterproof layer separated from the terminal mold assembly.

Fig. 4 is a further exploded perspective view of the USB socket shown in fig. 3, particularly illustrating the rear waterproof layer and the terminal module separated from the metal shell.

Fig. 5 is a front view of the USB receptacle shown in fig. 1.

Fig. 6 is a cross-sectional view taken along line a-a of fig. 5.

Fig. 7 is an exploded perspective view of the USB socket according to the second embodiment of the present invention, specifically showing a perspective view of the rear waterproof layer, the terminal module, and the metal inner housing separated from the metal outer housing.

Fig. 8 is a sectional view of the second embodiment of the USB socket of the present application, in which the specific sectional position and direction are the same as those of the first embodiment along the line a-a in fig. 5.

Fig. 9 is an exploded perspective view of the USB socket according to the third embodiment of the present invention, specifically showing a perspective view of the rear waterproof layer, the terminal module, and the metal inner housing separated from the metal outer housing.

Fig. 10 is a sectional view of a third embodiment of the USB socket according to the present application, in which the specific sectional position and direction are the same as those of the first embodiment along the line a-a in fig. 5.

Fig. 11 is an exploded perspective view of a fourth embodiment of the USB socket according to the present invention, specifically showing a perspective view of the rear waterproof layer, the terminal module, and the metal inner housing separated from the metal outer housing.

Fig. 12 is a sectional view of a fourth embodiment of the USB socket according to the present application, in which the specific sectional position and direction are the same as those of the first embodiment along the line B-B in fig. 5.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part 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.

For the sake of accuracy of the full-text representation, all the references relating to the directions are made with reference to fig. 1, and the direction of the X-axis is defined as the left-right direction; the direction of the Y axis is defined as the up-down direction, and the direction of the Z axis is defined as the front-back direction (i.e. the plugging direction of the mating connector), wherein the forward direction of the Z axis is the back direction.

Referring to fig. 1 to 6, a USB socket according to a first embodiment of the present disclosure includes a terminal module 1 and a metal shell 2 surrounding the terminal module 1. In the present application, the metal shell member 2 is preferably formed by drawing a metal plate, or the metal shell member 2 is further drawn or formed by processing a metal pipe body, and the metal shell member 2 is formed in a cylindrical shape with both ends open. Wherein the metal housing part 2 and the terminal module 1 together define a plug space 10 for inserting a mating connector (not shown).

It should be noted that, the metal casing member 2 may also be formed by bending a metal plate, and the above-mentioned drawing method or metal pipe body method is certainly an optimal solution, and the metal casing member 2 of the optimal solution has no seam, better structural strength, better combination stability with the terminal module 1, and is more favorable for waterproof design.

Of course, it should be noted that, in order to more stably and conveniently mount the metal shell member 2 combined with the terminal module 1 to the internal of the butt circuit board or the electronic device, the USB socket further includes an outer shell metal member 201, and the outer shell metal member 201 is sleeved on the periphery of the opening end of the metal shell member 2 and is welded and fixed with the metal shell member 2. A waterproof rubber ring 202 for waterproofing is further arranged at the front end of the outer casing metal piece 201 and at the periphery of the opening end of the metal casing piece 2. The metal casing member 2 can easily form a fixing structure (not numbered) to fix the electronic device housing or the butt circuit board.

Referring to fig. 4 to 6, in the present embodiment, the terminal module 1 includes an insulating body 11 and a plurality of terminals 12 fixed to the insulating body 11. The insulating body 11 is formed by injection molding of an insulating plastic material. The insulation body 11 includes a base 111, a tongue root 1121 formed by extending forward from the base 111, and a tongue end 1122 formed by extending forward from the tongue root 1121, and the tongue root 1121 and the tongue end 1122 are collectively referred to as a tongue 112. Each of the terminals 12 includes a contact portion 121 at least partially exposed on the surface of the tongue end portion 1122, a fixing portion 122 extending rearward from the contact portion 121 and fixed inside the insulating body 11 (mainly the tongue root portion 1121 and the base portion 111), and a pair of pins 123 extending rearward from the fixing portion 122 and out of the insulating body 11. A plurality of the terminals 12 are arranged into an upper row terminal group (not numbered) and a lower row terminal group (not numbered), the contact portion 121 of each terminal 12 of the upper row terminal group 121 is exposed from the upper surface of the tongue end portion 1122, and the contact portion 121 of each terminal 12 of the lower row terminal group 122 is exposed from the lower surface of the tongue end portion 1122. The contact portion 121 is used for electrically contacting with a docking connector, and the docking pin 123 is used for electrically connecting with a docking circuit board. In the present application, the USB socket is a non-Pin-full USB-Type-C socket connector, that is, the number of terminals is less than 24, but the number of the terminals 12 is not limited to the present application.

Further, the USB socket of the present application further includes a middle plate 6, where the middle plate 6 is disposed between two rows of upper and lower terminal sets along the up-down direction, and more specifically, two middle plates 6 are disposed, and the two middle plates 6 are respectively disposed on two sides of the tongue plate 112 along the left-right direction. Each middle plate 6 protrudes out of the side of the tongue 112 in the left-right direction, and is used for being electrically connected with a butting connector and being buckled.

Referring to fig. 3 to 6, in the present embodiment, the USB socket further includes a metal inner casing 3, and the metal inner casing 3 is integrally formed by extending a rear end edge of the metal outer casing 2, specifically, by folding the rear end edge of the metal outer casing 2 back and forth. The metal inner shell 3 is located in the cylindrical interior of the metal outer shell 2, and the metal inner shell 3 includes an annular stop plate 31 extending in a plane along the vertical direction and the horizontal direction, a coupling plate 312 formed by further extending the outer periphery of the stop plate 31 rearward, and a retaining leg 311 formed by further extending the inner periphery of the stop plate 31 rearward. The rear end edge of the coupling plate 312 is integrally connected to the rear end edge of the metal shell member 2.

Further, the base 111 defines a front surface 1111 facing the insertion space 10 and a rear surface 1112 at a rear end of the base 111. The stop plate 31 covers the front surface 1111 of the base 111. The connecting plate 312 is disposed around the outer periphery of the base 111 and is attached to the inner surface of the metal casing 2 (the attachment is not particularly limited to a seamless attachment, but rather should be understood to include an opposite attachment with a small gap, mainly because the metal plate is difficult to achieve a 180-degree folding seamless attachment in the actual drawing or bending process). The anti-back-blocking pin 311 passes through the base 111 from the front surface 1111 of the base 111 to the back and is hooked on the back surface 1112 of the base 111. Specifically, in the present embodiment, the stop plate 31 is formed in a ring shape (shown by covering the entire front surface 1111 of the base portion 111), and the coupling plate 312 is formed in a ring shape (shown by being attached to the inner surface of the metal casing member 2 for a circle).

When the mating connector is inserted into the inserting and pulling space 10, the stop plate 31 serves as a stop surface after the mating connector is inserted in place, so that the structural strength is very good, and the metal stop plate 31 is not easily scratched, deformed and damaged. In addition, the metal inner housing part 3 is directly and integrally formed by extending the metal outer housing part 2, the annular combination plate 312 and the annular stop plate 31, so that the structural strength of the metal inner housing part 3 is better. The anti-retreat clamping pin 311 is used for fixing the terminal module 1 assembled in the metal shell member 2, and preventing the terminal module 1 from retreating. When the USB socket is butted with the butting connector, the impact force from the butting connector, which needs to be borne by the terminal module 1, is small, so that the stability of the overall structure of the USB socket connector is enhanced.

Referring to fig. 7 and 8, as a second example of the USB socket of the present application, considering that the manner in which the metal inner housing 3 in the first embodiment is directly and integrally formed by extending the metal outer housing 2 has a certain difficulty in the actual production process, specifically, it is difficult to form the coupling plate 312 to be completely attached to the inner surface of the metal outer housing 2 by folding back 180 degrees through a drawing or bending process. Thus, in the second embodiment, the metal inner housing part 3 is designed as a separate metal element, and the metal inner housing part 3 in the second embodiment is substantially the same in structure as the metal inner housing part 3 in the first embodiment, with the only difference that: the rear end edge of the coupling plate 312 is not integrally connected to the metal shell member 2. The second embodiment is able to easily design the joint plate 312 of the independent metal inner casing 3 and the inner surface of the metal outer casing 2 to be closely attached by the manufacturing precision of the current technology, and more preferably, the annular joint plate 312 is designed to be tightly fitted and fixed with the inner surface of the metal outer casing 2, and the stable joint is ensured by welding or adhesive reinforcement.

Referring to fig. 9 and 10, a third example of the USB socket of the present application is shown, in which the metal inner housing part 3 is designed as a two-piece structure including a first inner housing part 301 and a second inner housing part 302. The first inner case member 301 includes a stopper plate 31 (having the same structure as the stopper plate 31 in the second embodiment) and a coupling plate 312 (having the same structure as the coupling plate 312 in the second embodiment, and having a slightly narrower width in the front-rear direction); the second inner housing 302 is formed with a stopper plate 3021 which abuts against the rear surface 1112 of the base 111, and a fixing plate 3022 which is integrally extended from the stopper plate 3021 and is fitted to the inner surface of the metal outer housing 2, and the coupling plate 312 of the first inner housing 301 and the fixing plate 3022 of the second inner housing 302 are fixed to the inner surface of the metal outer housing 2 by welding or gluing. Further, in the third embodiment, it is preferable that the first inner housing member 301 and the second inner housing member 302 have the same shape. The first inner housing 301 and the second inner housing 302 clamp the front surface 1111 and the rear surface 1112 of the base 111 of the terminal module 1 in the front-rear direction, so that the fixing effect of the first embodiment and the second embodiment can be achieved, and the third embodiment is convenient to assemble and process. The bending action of the anti-back-off pin 311 in the first and second embodiments is avoided, and the combining stability of the terminal module 1 and the metal shell member 2 is better.

Referring to fig. 11 and 12, a fourth example of the USB socket of the present application is shown, and the fourth embodiment is similar to the third embodiment in that the metal inner housing 3 is designed as two pieces, except that the single metal inner housing 3 is not ring-shaped, specifically: the stop plate 31 is in the shape of a strip plate, the combination plate 312 is in the shape of a strip plate, the rear end edge of the combination plate 312 is directly bent and extended to form a strip plate-shaped anti-return clamping plate 3121, and the anti-return clamping plate 3121 is hung and buckled on the rear surface 1112 of the base 111. In the fourth example, the two metal inner housing pieces 3 are respectively fastened to the base 111 in the up-down direction (straddling the base 111), then the terminal module 1 combined with the two metal inner housing pieces 3 is inserted into the metal outer housing piece 2 from the back to the front, and finally the combining plate 312 is welded or fixed to the inner surface of the metal outer housing piece 2 by gluing. In the modification of the fourth embodiment, the two metal inner cases 3 may be designed to be vertically engaged with the base 111 to form a ring, that is, the two metal inner cases 3 may be designed to cover the outer peripheries of the left and right sides of the base 111 at the same time.

Of course, in all embodiments of the present application, the rear surface of the insulating body 11 is further covered with a rear waterproof layer 4, the rear waterproof layer 4 is combined with the inner surface of the metal shell 3, and the pair of pins 123 of the terminal 12 protrude rearward through the rear waterproof layer 4. The rear insulating block 5 is further included, the rear insulating block 5 integrally fixes all the butt pins 123 of the terminals 12, and the rear waterproof layer 4 is filled between the insulating block 5 and the insulating body 11.

Although embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A USB socket comprises a terminal module and a metal shell piece surrounding the terminal module;

a plurality of the terminals are arranged into an upper row terminal group and a lower row terminal group, the contact portion of each terminal of the upper row terminal group is exposed from the upper surface of the tongue portion, and the contact portion of each terminal of the lower row terminal group is exposed from the lower surface of the tongue portion, characterized in that:

2. The USB socket according to claim 1, wherein the inner metal shell member is formed with a stopper plate covering at least a part of a front surface of the base portion facing the insertion and extraction space, the stopper plate forming a stopper surface for stopping excessive insertion of the mating connector.

3. The USB socket according to claim 2, wherein the stopper plate is formed in a ring shape covering the entire front surface of the base portion facing the insertion and extraction space.

4. The USB socket according to claim 2, wherein the stop plate extends backward to form an anti-back-blocking pin, and the anti-back-blocking pin passes through the base from the front surface of the base backward and is hooked on the rear surface of the base.

5. The USB socket according to claim 2, wherein the stopper plate is formed with a coupling plate extending rearward, the coupling plate being attached to an inner surface of the metal casing member and fixed to the metal casing member.

6. The USB socket according to claim 5, wherein the coupling plate is formed in a ring shape and is attached to the inner surface of the metal casing member for a circumference.

7. The USB socket as claimed in claim 5, wherein the rear end edge of the coupling plate is further extended to form a retaining plate, the retaining plate is hooked on the rear surface of the base, and the two metal inner housing members straddle the base in the up-down direction.

8. The USB socket according to any one of claims 1 to 6, wherein the metal inner shell member is formed by integrally extending a rear end edge of the metal outer shell member.

9. The USB socket according to any one of claims 2 to 6, wherein the metal inner housing member includes a first inner housing member and a second inner housing member that are independent from each other, the first inner housing member forms the stopper plate and the coupling plate, the second inner housing member forms a stopper plate that abuts against a rear surface of the base, and a fixing plate that is integrally formed with the stopper plate and is attached to an inner surface of the metal outer housing member, and the fixing plate is fixed to the metal outer housing member.

10. The USB receptacle of claim 9, wherein the first and second inner housing members are identical in shape.

11. The USB socket according to any one of claims 1 to 7, wherein the rear surface of the insulator is covered with a rear waterproof layer, the rear waterproof layer is bonded to an inner surface of the metal casing member, the pair of terminals protrude rearward through the rear waterproof layer, and the USB socket further includes a rear insulating block, the rear insulating block integrally fixes the pair of terminals, and the rear waterproof layer is filled between the insulating block and the insulator.