CN107293894B

CN107293894B - Electric connector and manufacturing method thereof

Info

Publication number: CN107293894B
Application number: CN201610198776.8A
Authority: CN
Inventors: 姚涛; 赵俊
Original assignee: Foxconn Kunshan Computer Connector Co Ltd; Hongteng Precision Technology Co Ltd
Current assignee: Foxconn Kunshan Computer Connector Co Ltd; Hongteng Precision Technology Co Ltd
Priority date: 2016-04-01
Filing date: 2016-04-01
Publication date: 2021-05-25
Anticipated expiration: 2036-04-01
Also published as: TW201740634A; TWI689145B; CN107293894A; JP2017188420A

Abstract

An electric connector comprises an insulating body with a base and a tongue plate, a plurality of conductive terminals fixed on the insulating body, a shielding shell sleeved outside the insulating body, and a metal shell connected with a circuit board.

Description

Electric connector and manufacturing method thereof

[ technical field ] A method for producing a semiconductor device

The present invention relates to an electrical connector, and more particularly, to an electrical connector suitable for positive and negative insertion and a method for manufacturing the same.

[ background of the invention ]

In the prior art, please refer to a waterproof socket electrical connector disclosed in chinese invention No. CN104538782A, which includes a rubber core housing, a shielding shell, an insulating body and a sealing body. The rubber core shell comprises a hollow opening, and an inserting side and a sealing side which are respectively positioned at two sides of the hollow opening. The shielding shell is arranged in the hollow opening. The sealing body is formed on the sealing side and is filled in the gap between the rubber core shell and the shielding shell. Refer to a waterproof electrical connector disclosed in the chinese invention patent No. CN 104752888A. The electric connector comprises an insulating body, a terminal, a shielding shell and a waterproof shell. The waterproof shell is sleeved on the shielding shell. And the waterproof rubber ring is sleeved on the waterproof shell in a penetrating manner. The rear end of the waterproof shell is provided with a sleeving part, and the sleeving part wraps the rear baffle at the rear end of the shielding shell. The rear end of the insulating body and the sleeving part of the waterproof shell are jointly surrounded by a glue filling cavity for filling waterproof glue. Refer to a waterproof electric connector disclosed in the chinese utility model No. CN 204289872U. The waterproof electric connector comprises an outer shielding shell, a fixing element, a composite module and an insulating shell. The top plate of the fixing member is fixed to the outer shield shell. The outer shield shell and the fixing member are insert-molded inside the insulating housing. In the prior art, the waterproof design cannot be completely attached to the metal shell of the electric connector, and water leakage, liquid leakage and the like are easily caused, so that the internal structure of the electric connector is damaged. Meanwhile, the waterproof shell cannot ensure the product rightness, and the auxiliary shell is easily and loosely connected with the main shell and cannot be stably fixed. In addition, when the anti-abrasion oil is used in certain occasions, a protective check ring and a dust ring are often required to be additionally arranged, even lubricating oil is required to be added, abrasion is prevented, and time and labor are wasted.

Refer to a waterproof electrical connector disclosed in the chinese invention patent No. CN 103208698B. The electric connector comprises a metal shell, an insulation body arranged in the metal shell, a terminal fixedly arranged on the insulation body and an insulation shell coated outside the metal shell. And a metal fixing piece connected with the circuit board is formed outside the insulating shell in an injection molding mode. In such a design, the holding member is formed outside the insulating housing and is sleeved on the metal housing, which easily causes the possibility of slipping caused by the untight fit between the insulating housing and the metal housing.

Therefore, there is a need to provide a new electrical connector and a method for manufacturing the same to overcome the above-mentioned drawbacks.

[ summary of the invention ]

The invention aims to provide an electric connector and a manufacturing method thereof, which can prevent water and enhance the strength of the electric connector.

The purpose of the invention is realized by the following technical scheme one: an electric connector comprises an insulating body with a base and a tongue plate, a plurality of conductive terminals fixed on the insulating body, a shielding shell sleeved outside the insulating body, and a metal shell connected with a circuit board.

Further, the metal shell and the shielding shell are fixed in a welding mode.

Furthermore, the metal shell is provided with a plurality of glue overflow holes, and the glue overflow holes are filled in the waterproof shell when the waterproof shell and the metal shell are integrally formed.

Furthermore, the waterproof shell is provided with a containing cavity, and the tongue plate extends forwards out of the shielding shell and is contained in the containing cavity.

Further, the base is provided with a rear end portion formed by horizontally extending from the top end to the rear, the shielding shell is provided with a tail portion formed by horizontally extending to the rear, and the tail portion is attached to the upper surface of the rear end portion.

Furthermore, the rear end of the base is provided with a pair of placing grooves, the rear end edge of the bottom of the shielding shell is provided with a plurality of first abutting arms which are bent upwards and extend, and the first abutting arms are accommodated and fixed in the placing grooves of the insulating body.

Furthermore, the metal shell is provided with a plurality of first fixing pins and a plurality of second fixing pins, the first fixing pins extend towards two sides and are bent and extended downwards in a suspended mode so as to be fixed on the circuit board, the first fixing pins are lower than the second fixing pins in the vertical direction, and the first fixing pins are partially wrapped in the waterproof shell.

Furthermore, a plurality of convex hulls which protrude inwards are arranged on the shielding shell, and the convex hulls are in interference contact with the butting connector.

The purpose of the invention is realized by the following technical scheme II: a method of manufacturing an electrical connector comprising: a. forming a terminal module which comprises an insulating body with a tongue plate, and a conductive terminal and a reinforcing piece which are fixedly held on the insulating body; b. providing a shielding shell, and sleeving the shielding shell outside the terminal module; c. providing a metal shell, and integrally forming a waterproof shell outside the metal shell; d. the metal shell and the waterproof shell are sleeved on the outer side of the shielding shell, and the metal shell is fixedly connected with the shielding shell.

Further, the metal shell is welded and fixed on the shielding shell.

Compared with the prior art, the invention has the following beneficial effects: the sealing part of the electric connector completely seals the rear end of the electric connector, the metal shell and the waterproof shell are integrally formed and then assembled outside the shielding shell, the forming process is simple, meanwhile, the metal shell and the shielding shell are welded and fixed to enhance firmness, the service life is long, and the electric connector is not easy to leak.

[ description of the drawings ]

Fig. 1 is a perspective assembly view of the electrical connector of the present invention attached to a circuit board.

Fig. 2 is a perspective view of the electrical connector of the present invention separated from the circuit board.

Fig. 3 is a perspective view of the electrical connector of the present invention with the waterproof housing removed.

Fig. 4 is a perspective view of the electrical connector of the present invention with the waterproof housing and the sealing ring removed and the metal housing removed.

Fig. 5 is a perspective view of fig. 4 viewed from another direction.

Fig. 6 is a perspective view of fig. 4 with the metal shell removed and the shield case removed.

Fig. 7 is a perspective view of fig. 6 viewed from another direction.

Fig. 8 is a further exploded perspective view of fig. 6.

Fig. 9 is an exploded perspective view of fig. 8 viewed from another direction.

Fig. 10 is a schematic view of the insulating block of the insulating body of the electrical connector of the present invention when the insulating block is not molded.

Fig. 11 is a cross-sectional view of the electrical connector of the present invention taken along line a-a of fig. 1.

[ description of main reference symbols ]

Electrical connector	100	Insulating body	1
				Base seat	11	Perforation	111
Groove	112	Placing groove	113
				Tongue plate	12	Terminal groove	121
Hollow-out part	122	Empty gap	123
				Platform	124	Accommodating tank	125
Rear end part	13	Pressing groove	131
				Insulating block	14	Conductive terminal	2
Convex hull	20	First terminal	21
				First contact part	211	A first holding part	212
A first welding part	213	Second terminal	22
				Second contact part	221	Second fixing part	222
Second welding part	223	Reinforcing element	3
				Main body part	31	A bent part	32
Solder leg	33	Shielding shell	4
				Inner edge	40	Roof wall	41
The first abutting part	411	Bottom wall	42
				First abutting arm	421	The second abutting part	422
Convex hull	423	Side wall	43
				Tail part	44	Second abutting arm	441
Connecting arm	45	Opening of the container	450
				Metal shell	5	Glue overflow hole	50
Air vent	51	First bending foot	52
				First fixed foot	53	Second fixing leg	54
Second bending foot	55	Waterproof case	6
				Containing cavity	60	Convex column	61
Step part	62	Front inner wall	63
				Rear inner wall	64	Sealing part	7
Circuit board	200

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

[ detailed description ] embodiments

Hereinafter, an embodiment of the electrical connector 100 of the present invention will be described with reference to fig. 1 to 11. The port where the electrical connector 100 is plugged with a mating connector is defined as a plugging end. Defining a docking direction, a transverse direction perpendicular to the docking direction, and a vertical direction perpendicular to both the docking direction and the transverse direction.

Referring to fig. 1 to fig. 3, the electrical connector 100 of the present invention is fixedly connected to a circuit board 200, and includes an insulative housing 1, a conductive terminal 2 held in the insulative housing 1, a stiffener 3 installed in the insulative housing 1, a shielding shell 4 covering the insulative housing 1, a metal shell 5 covering the shielding shell 4, and a waterproof shell 6 covering the exterior.

Referring to fig. 6 to 10, the insulating body 1 includes a base 11 and a tongue plate 12 extending forward from the base 11. The top end of the base 11 is horizontally extended backwards to form a rear end part 13. Referring to fig. 10, the rear end portion 13 is provided with a plurality of pressing grooves 131 on the upper and lower surfaces thereof. The base 11 is provided with a plurality of through holes 111 penetrating up and down near the rear end 13, and the through holes 111 are used for positioning the conductive terminals 2 and accommodating glue circulation. The top end of the base 11 is provided with a groove 112. The base 11 is provided at a rear end thereof with a pair of placement grooves 113. The tongue plate 12 has a plurality of terminal grooves 121 on the upper and lower surfaces thereof and hollow portions 122 disposed around the terminal grooves 121. The terminal grooves 121 on the upper and lower surfaces of the tongue plate 12 are arranged in a staggered manner, so that the conductive terminals 2 can be pressed and positioned by the mold core. The two sides of the tongue plate 12 are provided with the empty gaps 123, so that the conductive terminals 2 at the outermost side are exposed from the empty gaps 123, thereby facilitating the positioning of the mold core and preventing the deflection during the glue filling. The insulating body 1 further comprises an insulating block 14 integrally formed on the tongue plate 12. Referring to fig. 10, a platform 124 formed by extending horizontally is disposed on the tongue plate 12 adjacent to the base 11, so that the mold core can be pressed when the insulating block 14 is formed, thereby preventing the filling of the glue. The tongue plate 12 has an accommodating groove 125 formed on the upper and lower surfaces thereof and penetrating the terminal groove 121. The accommodating groove 125 is disposed on both sides of the terminal groove 121 for easy placement.

Referring to fig. 7 to 9, the conductive terminal 2 is integrally formed with the insulating housing 1, and includes a first terminal 21 and a second terminal 22. The first terminal 21 includes a first contact portion 211 exposed on the upper surface of the tongue plate 12, a first holding portion 212 accommodated in the base 11, and a first soldering portion 213 extending out of the insulating housing 1. The second terminal 22 includes a second contact portion 221 exposed from the lower surface of the tongue plate 12, a second holding portion 222 accommodated in the base 11, and a second soldering portion 223 extending out of the insulating housing 1. The first welding parts 213 and the second welding parts 223 are disposed in a row on the same plane. The first terminals 21 and the second terminals 22 are respectively eight and symmetrically distributed along a central axis extending back and forth. The first contact portion 211 of the first terminal 21 and the second contact portion 221 of the second terminal 22 are vertically disposed in correspondence, and the first soldering portion 213 of the first terminal 21 and the second soldering portion 223 of the second terminal 22 are respectively located on the same plane. Therefore, the first contact portion 211 and the second contact portion 221 of the electrical connector 100 can be electrically connected with the corresponding contact portions of the mating connector in a correct and aligned manner regardless of the forward or reverse insertion of the mating connector.

Referring to fig. 6, the first contact portion 211 of the first terminal 21 and the second contact portion 221 of the second terminal 22 are provided with convex hulls 20 protruding to both sides. The convex hulls 20 are accommodated in the accommodating grooves 125, and the convex hulls 20 on each conductive terminal 2 are arranged in a staggered manner, so that the mold core can be pressed on the convex hulls 20.

The reinforcing piece 3 is provided with two pieces with hollow-out middle parts. Each reinforcing member 3 includes a main body 31 held in the base 11, a bent portion 32 bent and extended from the tail end of the main body 31, and a fillet 33 bent and extended downward from the bent portion 32. The front end of the main body 31 of the stiffener 3 is exposed out of the tongue plate 12 of the insulation body 1 and is covered in the insulation block 14.

Referring to fig. 1 to 9, the shielding shell 4 includes a top wall 41 and a bottom wall 42 opposite to each other and having an inner edge 40, and a pair of side walls 43 connecting the top wall 41 and the bottom wall 42. Referring to fig. 7, the rear end of the top wall 41 is provided with a first abutting portion 411 protruding inward, and the rear end of the bottom wall 42 is provided with a first abutting arm 421 bent downward and extending. The first abutting portion 411 is received in the groove 112 of the insulating housing 1, and the first abutting arm 421 is received in the placing groove 113 of the insulating housing 1, so as to enhance the fixation of the shielding shell 4 and the insulating housing 1. The bottom wall 42 is further provided with a pair of second abutting portions 422 protruding inwards, and the second abutting portions 422 abut against the front end surface of the base 11 of the insulating body 1. Referring to fig. 6 to 9, the first abutting portion 411 and the pair of second abutting portions 422 are disposed at three points to prevent damage to the electrical connector 100 when the mating connector is inserted excessively. The shielding shell 4 further has a tail portion 44 extending rearward from the top wall 41 and extending horizontally, and a connecting arm 45 connecting the tail portion 44 and the top wall 41. The tail portion 44 is higher than the top wall 41 in the up-down direction. Two sides of the tail portion 44 are provided with second abutting arms 441 formed by bending and extending downwards, and the second abutting arms 441 abut against the rear end face of the rear end portion 13 of the insulating body 1. Referring to fig. 4 and 5, the tail portion 44 is attached to the upper surface of the rear end portion 13 of the insulating body 1. An opening 450 is provided in the connecting arm 45. Referring to fig. 4, the connecting arm 45 corresponds to the through hole 111, so that a portion of the through hole 111 is exposed out of the opening 450. The front end of the tongue plate 12 is exposed out of the frame opening of the shielding shell 4. The base 11 of the insulating housing 1 covers the rear port of the shielding shell 4 to enhance the sealing performance of the electrical connector 100. The shielding shell 4 has several convex hulls 423 protruding inwards on the top wall 41 and the bottom wall 42, and the convex hulls 423 are in interference contact with the butting connector for grounding.

Referring to fig. 1 to 5, the metal shell 5 is substantially a flat plate and is disposed on the shielding shell 4. Referring to fig. 4 and 5, the metal shell 5 has a plurality of glue overflow holes 50 and an exhaust hole 51 disposed behind the glue overflow holes 50. The exhaust hole 51 corresponds to the opening 450 of the shield case 4. The front end of the metal shell 5 is provided with a plurality of first bending legs 52, and the first bending legs 52 are abutted against the upper end surface of the top wall 41 of the shielding shell 4. A pair of first fixing legs 53 and a pair of second fixing legs 54 extending towards two sides and bending downwards and extending are respectively arranged at two sides of the metal shell 5, and a second bending leg 55 is arranged between the first fixing legs 53 and the second fixing legs 54. Referring to fig. 3 to 5, the second bending legs 55 are clamped on two sides of the base 11 of the insulating body 1. The first fixing leg 53 is lower than the second fixing leg 54 in the vertical direction. Referring to fig. 3, the rear end of the metal shell 5 is soldered to the tail 44 of the shielding shell 4. The second fixing pin 54 is suspended outside the tail portion 44 of the shielding shell 4.

The waterproof housing 6 is integrally formed with the metal housing 5, and forms an accommodating chamber 60. The receiving cavity 60 receives the portion of the tongue plate 12 exposed from the shielding shell 4. Referring to fig. 1 and 2, the rear end surface of the waterproof housing 6 is located at the rear end 13 of the insulating body 1 and the front end of the tail portion 44 of the shielding shell 4. The two sides of the waterproof housing 6 are provided with protruding posts 61 to enhance the strength of the electrical connector 100. The waterproof case 6 fills the glue overflow hole 50 to enhance the holding force between the waterproof case 6 and the metal case 5. The first fixing leg 53 of the metal shell 5 is partially wrapped in the waterproof shell 6, and the waterproof shell 6 and the circuit board 200 are supported, so that the risk of unstable size of the first fixing leg 53 caused by the integral molding of the waterproof shell 6 and the metal shell 5 is reduced.

Referring to fig. 11, the waterproof housing 6 has a step portion 62 inside, so that the upper and lower inner walls of the waterproof housing 6 are divided into a pair of front inner walls 63 located at the front end of the step portion 62 and a pair of rear inner walls 64 located at the rear end of the step portion 62. The distance between the pair of front inner walls 63 is smaller than the distance between the pair of rear inner walls 64. The top wall 41 and the bottom wall 42 of the shielding shell 4 are attached to the rear inner wall 64, so that the front end of the shielding shell 4 abuts against the step 62 of the waterproof housing 6, and the inner edge 40 of the shielding shell 4 is flush with the front inner wall 63 of the waterproof housing 6. The port of the waterproof shell 6 is arranged obliquely up and down, and the lower port protrudes out of the upper port.

Referring to fig. 2, the electrical connector 100 further includes a sealing portion 7 sealed at the rear end of the insulating housing 1. The sealing part 7 is filled with glue through the opening 450 of the shielding shell 4 and the through hole 111 of the insulating body 1, so as to fill the gap between the base 11 and the rear end 13 of the insulating body 1 and the waterproof housing 6, thereby fully achieving the waterproof effect. The air vent 51 on the metal shell 5 can be used to exhaust air in the glue circulation channel during glue filling.

The manufacturing method of the invention is as follows: the metal plate is made into a conductive terminal 2 and a reinforcing piece 3, the insulating body 1 is integrally formed outside the conductive terminal 2 and the reinforcing piece 3, and then the insulating block 14 is formed secondarily to seal a gap on the insulating body 1; the metal plate is made into a shielding shell 4 and a metal shell 5, the shielding shell 4 is sleeved outside the insulating body 1, and the metal shell 5 is integrally formed into the waterproof shell 6; the waterproof shell 6 and the metal shell 5 are sleeved outside the shielding shell 4, and the metal shell 5 and the shielding shell 4 are fixed through laser welding; the sealing portion 7 is formed by pouring a sealant through the opening 450 of the shield case 4.

The above description is only a part of the embodiments of the present invention, and not all embodiments, and any equivalent variations of the technical solutions of the present invention, which are made by those skilled in the art through reading the present specification, are covered by the claims of the present invention.

Claims

1. An electric connector comprises an insulating body with a base and a tongue plate, a plurality of conductive terminals fixed on the insulating body, a shielding shell sleeved outside the insulating body, and a metal shell connected with a circuit board, and is characterized in that: the metal shell is provided with a plurality of glue overflow holes, the electric connector also comprises a waterproof shell which is integrally formed with the metal shell, the shielding shell comprises a top wall and a tail part which is connected with the rear side of the top wall, the waterproof shell and the metal shell are sleeved outside the shielding shell, the metal shell is provided with a pair of first fixing feet which are positioned at the front side and a pair of second fixing feet which are positioned at the rear side, extend towards two sides and are bent downwards, the first fixing feet and the second fixing feet are fixedly positioned on a circuit board, the rear end point of the metal shell is welded and connected on the tail part of the shielding shell to ensure that the metal shell is fixedly connected with the shielding shell, the top end of the base is horizontally extended backwards and provided with a rear end part, the base is provided with a plurality of through holes which are penetrated up and down and contain glue circulation, and the shielding shell is also provided with a connecting arm which is connected with the tail part and the top wall and, the electric connector comprises an insulating body, a connecting arm and a through hole, wherein the connecting arm is internally provided with an opening, part of the through hole is exposed out of the opening, the metal shell is provided with an exhaust hole, the exhaust hole corresponds to the opening, the electric connector further comprises a sealing part which is plugged at the rear end of the insulating body, and the sealing part penetrates through the opening, the through hole and the through hole to be filled with glue and passes through the exhaust hole to remove air in a glue circulation channel.

2. The electrical connector of claim 1, wherein: and when the waterproof shell and the metal shell are integrally formed, the waterproof shell fills the glue overflow hole.

3. The electrical connector of claim 1, wherein: the waterproof shell is provided with a containing cavity, and the tongue plate extends forwards out of the shielding shell and is contained in the containing cavity.

4. The electrical connector of claim 3, wherein: the waterproof shell is internally and vertically provided with step parts to divide the inner wall of the waterproof shell into a front inner wall and a rear inner wall, and the outer part of the shielding shell is attached to the rear inner wall, so that the front port of the shielding shell is abutted to the step parts, and the upper inner edge and the lower inner edge of the shielding shell are flush with the front inner wall.

5. The electrical connector of claim 1, wherein: the rear end of the base is provided with a pair of placing grooves, the rear end edge of the bottom of the shielding shell is provided with a plurality of first abutting arms which are bent upwards and extend to form, and the first abutting arms are accommodated and fixed in the placing grooves of the insulating body.

6. The electrical connector of claim 1, wherein: the first fixing foot is lower than the second fixing foot in the vertical direction, and the first fixing foot is partially wrapped in the waterproof shell.

7. The electrical connector of claim 1, wherein: the waterproof shell is internally provided with a step part, the inner wall of the waterproof shell is divided into a front inner wall and a rear inner wall, the waterproof shell is wrapped outside the shielding shell and extends forwards to the front end of the shielding shell to form an accommodating cavity, the outer part of the shielding shell is attached to the rear inner wall, so that the front end opening of the shielding shell is abutted against the step part, the tongue plate extends forwards to the front end of the shielding shell and is accommodated in the accommodating cavity, the end opening of the waterproof shell is arranged in an up-and-down inclined mode, and the lower end opening protrudes out of the upper end opening.

8. The electrical connector of claim 7, wherein: the shielding shell is provided with a plurality of convex hulls which protrude inwards, the convex hulls are in interference contact with the butting connector, and the inner edge of the shielding shell is flush with the front inner wall.

9. A method of manufacturing an electrical connector comprising:

a. forming a terminal module, which comprises an insulating body, and a conductive terminal and a reinforcing piece which are fixedly held on the insulating body, wherein the insulating body comprises a base, a tongue plate which is formed by extending forwards from the base and a rear end part which is formed by horizontally extending backwards from the top end of the base, and a plurality of through holes which are penetrated up and down and are used for accommodating the circulation of glue are formed in the position, close to the rear end part, of the base;

b. providing a shielding shell, wherein the shielding shell comprises a top wall, a tail part connected to the rear side of the top wall and a connecting arm which is connected with the tail part and the top wall and corresponds to the through hole, an opening is formed in the connecting arm, the shielding shell is sleeved outside the terminal module, and part of the through hole is exposed out of the opening;

c. providing a metal shell, wherein the metal shell is provided with a plurality of glue overflow holes, a waterproof shell is integrally formed outside the metal shell, the metal shell is provided with a pair of first fixing pins which extend towards two sides and are bent downwards to form a pair of first fixing pins positioned at the front side and a pair of second fixing pins positioned at the rear side, the first fixing pins and the second fixing pins are fixedly fixed on a circuit board, and the metal shell is provided with exhaust holes which correspond to the openings;

d. the metal shell and the waterproof shell are sleeved outside the shielding shell, and the rear end point of the metal shell is welded and connected to the tail part of the shielding shell so that the metal shell is fixedly connected to the shielding shell;

e. and providing a sealing part blocked at the rear end of the insulating body, wherein the sealing part penetrates through the opening and the through hole for glue filling and exhausts air in the glue circulation channel through the exhaust hole.