CN107799962B

CN107799962B - USB connector

Info

Publication number: CN107799962B
Application number: CN201710862543.8A
Authority: CN
Inventors: 张少灿
Original assignee: Shenzhen Everwin Precision Technology Co Ltd
Current assignee: Shenzhen Everwin Precision Technology Co Ltd
Priority date: 2017-09-21
Filing date: 2017-09-21
Publication date: 2023-06-16
Anticipated expiration: 2037-09-21
Also published as: CN107799962A

Abstract

The utility model provides a USB connector, includes butt joint subassembly, cover locate the outer first metal part of butt joint subassembly, be equipped with the plastic shell of acceping the cavity and integrated into one piece in the plastic shell, butt joint subassembly and first metal part insert in the plastic shell, butt joint subassembly include insulator and integrated into one piece in conductive terminal in the insulator, the insulator includes the basal portion and from the basal portion forward extension forms the butt joint tongue, first metal part including the cover locate annular main part on the basal portion and from the welding leg that the opposite both sides of annular main part backward extended and formed, the second metal part including the shaping in plate body in the plastic shell lateral wall and from the first welding part that the backward extension of plate body both sides formed, first welding part with the welding leg is laminated each other and welded as an organic wholely. The USB connector does not interfere with radio frequency signals, and is firm and stable in structure.

Description

USB connector

Technical Field

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

Background

In the field of traditional mobile phones, mobile phone antennas are mostly arranged externally, namely the antennas extend out of the mobile phones, so that the defect of imperfect appearance exists, and meanwhile, more space is occupied. Subsequently, the field of mobile phones starts to adopt built-in antennas, namely, the antennas are arranged in the outer cover of the mobile phone, so that the appearance problem is well solved.

Currently, with the use of a metal mobile phone middle frame, most terminal manufacturers directly set the mobile phone middle frame as a mobile phone antenna, and a metal iron shell penetrating through a USB connector of the metal middle frame can seriously interfere with radio frequency signals of the mobile phone antenna.

Disclosure of Invention

In view of this, it is necessary to provide a USB connector that eliminates the metal housing while compromising the structural strength, preventing interference with the antenna signal.

For solving above-mentioned technical problem, this application provides a USB connector, including butt joint subassembly, cover locate the outer first metalwork of butt joint subassembly, be equipped with accept the plastic shell of cavity and integrated into one piece in the second metalwork in the plastic shell, butt joint subassembly and first metalwork insert in the plastic shell, butt joint subassembly include insulator and integrated into one piece in the conductive terminal in the insulator, insulator include the basal portion and from the basal portion forward extension forms the butt joint tongue, first metalwork is including the cover locate annular main part on the basal portion and from the welding leg that annular main part opposite both sides backward extended forms, the second metalwork including the shaping in plate body in a side wall of plastic shell and from the first welding part that plate body both sides backward extended forms, first welding part with the welding leg is laminated each other and welded as an organic wholely.

Preferably, waterproof glue is smeared at the tail parts of the butt joint assembly and the plastic shell, and the waterproof glue fills gaps among the insulating body, the plastic shell, the first metal piece and the second metal piece.

Preferably, the rear end of the base of the insulating body extends backwards to form a protruding part, a through groove is formed in the protruding part, and the conductive terminal part is located in the through groove.

Preferably, the waterproof glue is filled in the through groove and surrounds the conductive terminal.

Preferably, the tail of the plastic shell is flush with the protruding part, a circle of glue containing groove is formed between the plastic shell and the protruding part, and the waterproof glue is firmly adhered in the glue containing groove and the through groove by taking the protruding part as a fulcrum.

Preferably, a clamping groove is formed in one end, close to the butt joint tongue, of the base of the insulating body, a clamping part clamped into the clamping groove is formed in the front end of the annular main body of the first metal piece, and a clamping part fixed with the rear end of the base is arranged at the rear end of the annular main body, corresponding to the base.

Preferably, the two lateral sides of the base extend outwards to form shoulders, the two lateral sides of the first metal piece are provided with accommodating parts corresponding to the positions of the shoulders, and the shoulders are clamped into the accommodating parts.

Preferably, a recess is provided between the shoulders of the base, the recess accommodating the rearward extension of the annular body such that the surface of the annular body is no higher than the surface of the base.

Preferably, the plate body of the second metal piece is provided with a notch, and the outer surface of the protruding part of the notch is covered by the plastic shell and is not exposed to the outside.

Preferably, the second metal piece further comprises a second welding part formed by bending from two lateral sides and extending, and the welding leg of the first metal piece and the second welding part are welded on the circuit board.

The USB connector adopts the plastic shell to avoid the influence on the mobile phone radio frequency signal caused by direct contact with the mobile phone metal shell, and simultaneously, the structural strength of the USB connector is ensured by arranging the first metal piece fixedly held by the butt joint assembly and the second metal piece integrally formed with the plastic shell and then mutually welding and fixing the first metal piece and the second metal piece or respectively welding the first metal piece and the second metal piece on the circuit board.

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 embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application.

FIG. 1 is a perspective view of a USB connector of the present application integrally soldered to a printed circuit board;

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

FIG. 3 is an exploded perspective view of a docking assembly, a first metal piece of the USB connector of the present application;

FIG. 4 is a perspective view of a docking assembly and a first metal piece of the USB connector of the present application;

FIG. 5 is a perspective view of a second metal piece of the USB connector of the present application;

fig. 6 is a cross-sectional view of a USB connector of the present application.

Detailed Description

For the purposes, technical solutions and advantages of the present application, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

Referring to fig. 1 and 2, the USB connector of the present application includes a docking assembly 10, a first metal member 30 coated outside the docking assembly 10, a plastic housing 20 for inserting the first metal member 30 and the docking assembly 10, a second metal member 40 integrally formed in the plastic housing 20, and a waterproof adhesive 50 coated at the tail portions of the docking assembly 10 and the plastic housing 20.

Referring to fig. 3 and 4, the docking assembly 10 includes an insulating body 11 and a conductive terminal 12 integrally formed in the insulating body 11. The insulating body 11 includes a base 111, and a mating tongue 119 extending forward from the base 111. The base 111 includes a recess 112 formed to be recessed downward from an upper surface of the base 111, a shoulder 113 formed to extend from both sides of the base 111 in a lateral direction, a hollowed portion 114 formed under the shoulder 113, a protruding portion 115 formed to extend from a rear side of the base 111, a through groove 116 formed to penetrate the protruding portion 115 in a vertical direction, a fitting portion 118 formed at an end of the base 111 near the abutment portion 119, and a plurality of catching grooves 117 concavely provided on the fitting portion 118 and a rear end of the base 111. The upper and lower side surfaces of the sleeve portion 118 are respectively provided with a clamping groove 117, and at least one side surface of the rear end of the base portion 111, which is far away from the abutment portion 119, is provided with a clamping groove 117.

The conductive terminal 12 penetrates the base 111 and extends to the abutment tongue 119 and is exposed from the abutment tongue 119. The conductive terminals 12 are partially disposed within the through slots 116 and are visually observable.

The first metal part 30 includes a ring-shaped main body 31, fillets 32 extending rearward from two lateral sides of the ring-shaped main body 31, a plurality of fastening

portions

34,35,36 formed on the ring-shaped main body 31 and fastened to the fastening groove 117, and a receiving portion 37 formed by cutting away portions of two lateral sides of the ring-shaped main body 31 corresponding to the shoulder 113 of the insulating body 11. The leg 32 extends from the annular body 31 laterally outward and then rearward, and thereby forms a bent portion 33. The

fastening parts

35,36 at the rear end of the first metal member 30 are formed by punching, bending, etc. after the first metal member 30 is mounted on the base 111 of the docking assembly 10, and then the fastening parts 25,26 are fastened into the fastening grooves 117 at the rear end of the insulating body 11 or are fastened to the tail surface of the base 111 by bending, so as to irreversibly fix the first metal member 30 on the docking assembly 10.

Referring to fig. 2, 5 and 6, the plastic housing 20 has a hollow structure, and includes a receiving cavity 21 for receiving the docking assembly 10, the second metal member 40 is integrally formed in a lower sidewall of the plastic housing 20, and includes a plate 41, two notches 42 formed on the plate 41 for being buckled with a docking plug (not shown), a first welding portion 43 formed by bending two lateral sides of the plate 41 and extending backward, and a second welding portion 44 formed by bending two lateral sides of the plate 41 and extending backward. The first welded portion 43 is attached to the leg 32 of the first metal member 30 and fixed by spot welding. The outer surface of the notch 42 is completely covered in the plastic housing 20, i.e. the convex side of the notch 42 does not leak out.

In an embodiment, the annular body 31 of the first metal piece 30 extends towards the socket direction of the plastic housing 20 to form an extension portion, and the notch 42 is disposed on the extension portion, and at this time, the plate 41 of the second metal piece 40 is integrally formed on the other side of the plastic housing 20 opposite to the extension portion.

The protruding portion 115 at the tail of the insulating body 11 is flush with the tail surface of the plastic housing 20, so that a ring of glue accommodating grooves (not numbered) are formed between the plastic housing 20 and the protruding portion 115.

The glue 50 is coated in the glue accommodating groove at the joint of the docking assembly 10 and the tail of the plastic housing 20, and at the same time, the glue passes through the through groove 116 in the protruding portion 115 of the insulating body 11 so that the glue has more adhesive supporting points, and the glue is more firmly adhered to the docking assembly 10 and the tail of the plastic housing 20 and penetrates into the gap between the insulating body 11 and the plastic housing 20. Meanwhile, the through groove 116 is formed, and glue surrounds the conductive terminal 12 to prevent water seepage between the conductive terminal 12 and the insulating body 11.

The solder tail 32 and the second solder part 44 are inserted into the solder hole of the circuit board 60 to be soldered and fixed.

Referring to fig. 1-6, the following will describe the assembly principle of the USB connector according to the present application in detail with reference to the accompanying drawings:

firstly, providing a butt joint assembly 10, wherein the butt joint assembly 10 is manufactured by a two-time injection molding process of a conductive terminal 12, a base 111 and a part of a butt joint tongue 119 of an insulating body 11 of the butt joint assembly 10 are molded in the first injection molding process, and meanwhile, the conductive terminal 12 must be fixed in the injection molding process of the butt joint tongue 119, so that a notch exists at the conductive terminal 12 position of the butt joint tongue 119, and the notch is mainly complemented in the second injection molding process;

then, the punched first metal piece 30 is sleeved on the base 111 of the insulating body 11 from one end of the abutting tongue 119 of the abutting assembly 10, at this time, the annular main body 31 of the first metal piece 30 just abuts against the sleeved part 118 at the front end of the base 111, part of the annular main body 31 extends backwards into the concave part 112, so that the outer surface of the annular main body 31 is not higher than the upper surface of the base 111, after the first metal piece 30 is completely sleeved, the fastening part 34 at the front end of the first metal piece 30 is fastened in the fastening groove 117 at the front end of the base 111, and then the

fastening parts

35,36 at the rear end of the first metal piece 30 are formed by bending or punching and fastened in the fastening groove 117 at the rear end of the base 111 or fastened on the surface of the tail of the base 111, thereby irreversibly fixing the first metal piece 30 on the insulating body 11;

then, providing a second metal piece 40 and the plastic housing 20 which are integrally formed, inserting the butt joint assembly 10 and the first metal piece 30 into the plastic housing 20 from one end of the plastic housing 20, at this time, attaching the welding leg 32 of the first metal piece 30 and the first welding portion 43 of the second metal piece 40 to each other, welding the welding leg 32 and the first welding portion 43 into a whole by spot welding, and fixedly connecting the plastic housing 20 and the butt joint assembly 10 into a whole;

finally, a waterproof glue 50 is smeared on the tail parts of the butt joint assembly 10 and the plastic shell 20, the waterproof glue 50 permeates into gaps among the plastic shell 20, the insulating body 11, the first metal piece 30 and the second metal piece 40, so that the tail part of the USB connector and the accommodating cavity 21 of the plastic shell 20 realize airtight waterproof, and water in the accommodating cavity 21 cannot penetrate through the gaps filled by the waterproof glue 50 to enter the electronic equipment; meanwhile, the waterproof glue 50 fills the through groove 116 at the tail of the insulating body 11 and surrounds the conductive terminal 12 to increase the air tightness between the conductive terminal 12 and the insulating body 11, and the protruding part 115 is positioned at the middle position, so that the waterproof glue 50 has a better supporting point, and is not easy to fall off after being dried to enhance the waterproof effect;

finally, the USB connector is mounted on the circuit board 60, the soldering leg 32 of the first metal piece 30 and the second soldering portion 44 of the second metal piece 40 are soldered on the circuit board 60 in a patch manner or a jack manner, so that the firmness and stability of the USB connector are enhanced by multi-point soldering, and meanwhile, the relative positions of the plastic housing 20 and the docking assembly 10 on the circuit board 60 are ensured not to be affected by external force changes, so that the service performance and waterproof performance are not affected.

The USB connector of the application adopts the plastic shell 20 to avoid the influence on the mobile phone radio frequency signal caused by direct contact with the mobile phone metal shell, and simultaneously, the structural strength of the USB connector is ensured by arranging the first metal piece 30 fixedly held by the docking assembly 10 and the second metal piece 40 integrally formed with the plastic shell 20 and then mutually welding and fixing the first metal piece 30 and the second metal piece 40 or respectively welding and fixing the first metal piece 30 and the second metal piece 40 on the circuit board 60.

Meanwhile, the waterproof glue 50 is smeared on the tail parts of the butt joint assembly 10 and the plastic shell 20, so that gaps among the insulating body 11, the plastic shell, the first metal piece 30 and the second metal piece 40 are filled with the waterproof glue 50, and waterproof performance is achieved.

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 one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.

Claims

1. The USB connector is characterized by comprising a butt joint assembly, a first metal piece sleeved outside the butt joint assembly, a plastic shell provided with a containing cavity and a second metal piece integrally formed in the plastic shell, wherein the butt joint assembly and the first metal piece are inserted into the plastic shell, the butt joint assembly comprises an insulating body and a conductive terminal integrally formed in the insulating body, the insulating body comprises a base part and a butt joint tongue part formed by extending forwards from the base part, the first metal piece comprises an annular main body sleeved on the base part and welding feet formed by extending backwards from two opposite sides of the annular main body, the second metal piece comprises a plate body formed in one side wall of the plastic shell and first welding parts formed by extending backwards from two sides of the plate body, and the first welding parts and the welding feet are mutually attached and welded into a whole;

waterproof glue is smeared at the tail parts of the butt joint assembly and the plastic shell, and gaps among the insulating body, the plastic shell, the first metal piece and the second metal piece are filled with the waterproof glue;

the rear end of the base part of the insulating body extends backwards to form a protruding part, a through groove is formed in the protruding part, and the conductive terminal part is positioned in the through groove;

the waterproof glue is filled in the through groove and surrounds the conductive terminal;

the tail of the plastic shell is flush with the protruding part, a circle of glue containing groove is formed between the plastic shell and the protruding part, and the waterproof glue is firmly adhered in the glue containing groove and the through groove by taking the protruding part as a fulcrum;

the plate body of the second metal piece is provided with a notch, and the outer surface of the protruding part of the notch is covered by the plastic shell and is not exposed to the outside.

2. The USB connector of claim 1, wherein a base portion of the insulating body is provided with a clamping groove near one end of the abutting portion, a front end of the annular main body of the first metal piece is provided with a clamping portion clamped into the clamping groove, and a rear end of the annular main body corresponding to the base portion is provided with a clamping portion fixed with the rear end of the base portion.

3. A USB connector according to any one of claims 1 or 2, wherein the lateral sides of the base portion extend outwardly to form shoulders, the lateral sides of the first metal member being provided with receptacles corresponding to the locations of the shoulders, the shoulders being snapped into the receptacles.

4. A USB connector according to claim 3, wherein a recess is provided between the shoulders of the base, the recess accommodating the rearward extension of the annular body such that the surface of the annular body is not higher than the surface of the base.

5. The USB connector of claim 4, wherein the second metal member further comprises a second soldering portion formed by bending from two lateral sides and extending, and the soldering leg of the first metal member and the second soldering portion are soldered on the circuit board.