CN114079191B

CN114079191B - Electrical connector

Info

Publication number: CN114079191B
Application number: CN202010809798.XA
Authority: CN
Inventors: 赵俊
Original assignee: Foxconn Kunshan Computer Connector Co Ltd; Foxconn Interconnect Technology Ltd
Current assignee: Foxconn Kunshan Computer Connector Co Ltd; Foxconn Interconnect Technology Ltd
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2025-03-21
Anticipated expiration: 2040-08-13
Also published as: CN114079191A

Abstract

The invention provides an electric connector, which comprises an insulating body, a conductive terminal, a metal shell and a plastic shell, wherein the conductive terminal is fixedly held on the insulating body to form a terminal module with the insulating body, the metal shell is used for accommodating the terminal module, the plastic shell is sleeved outside the metal shell, the insulating body comprises a base and a tongue plate formed by extending forwards along the base, the conductive terminal comprises a contact part exposed on the tongue plate and a welding part extending backwards out of the rear end of the insulating body, the metal shell is assembled on the plastic shell from back to front, both lateral sides of the rear end of the metal shell are respectively bent forwards to form a bending part, both lateral sides of the plastic shell are respectively provided with a metal welding plate part, and the bending part is provided with a stop part propped forwards against the rear end of the plastic shell and a welding piece welded on the metal welding plate part. The waterproof effect is good and the fixing effect is good.

Description

Electric connector

[ Field of technology ]

The present invention relates to an electrical connector, and more particularly, to an electrical connector suitable for positive and negative insertion.

[ Background Art ]

Referring to CN108270106B, it discloses an electrical connector, when a semi-finished product of a terminal module and a shielding shell is assembled with a housing, a fastening structure on a bracket structure integrally formed with the housing is used to fasten the rear end of an insulating body with each other, so as to realize stability between the two, and a rear end lug of the insulating body is made of plastic, so that the terminal module is easy to be damaged, and the fastening effect is poor.

Accordingly, it is desirable to provide a new electrical connector that overcomes the above-described drawbacks.

[ Invention ]

The invention aims to provide an electric connector with good waterproof effect and good fixing effect.

The electric connector comprises an insulating body, a conductive terminal, a metal shell and a plastic shell, wherein the conductive terminal is fixedly held on the insulating body to form a terminal module with the insulating body, the metal shell is used for accommodating the terminal module, the plastic shell is sleeved outside the metal shell, the insulating body comprises a base and a tongue plate formed by extending forwards along the base, the conductive terminal comprises a contact part exposed on the tongue plate and a welding part extending backwards out of the rear end of the insulating body, the metal shell is assembled on the plastic shell from back to front, the two lateral sides of the rear end of the metal shell are respectively bent forwards to form a return part, the two lateral sides of the plastic shell are respectively provided with a metal welding plate part, and the return part is provided with a blocking part which is propped forwards against the rear end of the plastic shell and a welding piece which is welded on the metal welding plate part.

Further, the reverse folding part is also provided with an abutting part abutting against two lateral wall surfaces of the plastic shell, and the soldering lug is formed by extending outwards from the lower end edge of the abutting part.

Further, the reverse folding part is also provided with positioning pins which are bent backwards and downwards from the rear end edge of the leaning part and are arranged at intervals with the soldering lug.

Further, a pair of clamping grooves are concavely formed in the two sides of the rear end face of the plastic shell forwards, and the upper limit and the lower limit of the blocking part are located in the clamping grooves.

Further, the rear end face of the terminal module and the rear end of the plastic shell form a glue filling space, and the glue filling space is filled with silica gel to form a waterproof glue plate positioned at the rear end of the electric connector.

Further, the reverse folding part is formed by bending backwards from the rear end of the metal shell and then clamping the rear end face of the plastic shell and bending forwards, and the part of the reverse folding part extending from the rear end of the metal shell to the stop part is located in the glue filling space and buried by the waterproof glue plate.

Further, the insulating body further comprises a vertically arranged rear baffle plate positioned at the rear end of the base, the rear baffle plate is propped forward to the rear end of the metal shell, and the waterproof rubber plate is propped forward to the rear baffle plate and seals the rear end of the electric connector.

Further, the electric connector further comprises a reinforcing piece integrally formed with the plastic shell, the reinforcing piece is made of metal, and the reinforcing piece is buried in the lower wall of the plastic shell and provided with metal welding plate parts extending out of two sides of the plastic shell.

Further, the rear baffle comprises a rack leaning side part positioned at two sides, the rack leaning side part is leaning against the stopping part, and the front surface of the rear baffle is propped against the rear end of the metal shell and exceeds the first surface and the second surface of the metal shell, which are arranged in the up-down direction from the up-down direction.

Further, the insulation body comprises a supporting groove and a locking groove, wherein the supporting groove is formed in the upper surface of the base and concavely arranged downwards and backwards from the front end surface of the base, the locking groove is formed in the lower surface of the base and concavely arranged upwards and forwards from the rear end surface of the base, the metal shell comprises a supporting block, a protruding block and a locking arm, the supporting block is located on the first surface and supported in the supporting groove, the protruding block is located in front of the supporting block and protrudes upwards, and the locking arm is located on the second surface and locked in the locking groove.

Compared with the prior art, the invention has the advantages that the silica gel is molded at the rear end of the electric connector in an pouring way, deformation or melting does not occur after the electric connector passes through a furnace at high temperature, the waterproof effect is good, and simultaneously, the folded part of the metal shell is folded forwards to be molded and the welding lug of the plastic shell at the outer side is fixed in a laser way, so that the waterproof effect is good, and the fixing effect is good.

[ Description of the drawings ]

Fig. 1 is a perspective view of an electrical connector of the present invention.

Fig. 2 is a view of fig. 1 from another direction.

Fig. 3 is a perspective view of the waterproof glue plate 8 of the electric connector of the present invention separated from the electric connector.

Fig. 4 is a schematic view of the electrical connector of the present invention from above.

Fig. 5 is an exploded perspective view of the electrical connector of the present invention.

Fig. 6 is a view of fig. 5 from another direction.

Fig. 7 is an exploded perspective view of the reinforcement, plastic housing and waterproof ring of the present invention. Fig. 8 is a view of fig. 7 from another direction.

Fig. 9 is a further exploded perspective view of fig. 4.

Fig. 10 is a view of fig. 9 from another direction.

Fig. 11 is a cross-sectional view taken from A-A of fig. 1.

Fig. 12 is a cross-sectional view taken along line B-B of fig. 1.

[ Main reference numerals Specification ]

Insulation body 1 of electric connector 100

Upper surface 111 of base 11

Lower surface 112 side 113

Front end face 114 abuts against groove 115

Latch groove 116 support 117

Back baffle 13 of tongue plate 12

Front surface 131 rests against side 132

Contact portion 21 of conductive terminal 2

Connecting portion 22 welding portion 23

The main body 31 of the middle reinforcing sheet 3

Head 32 leg 33

The metal shell 4 is accommodated in the space 40

First surface 41 bump 411

Stop block 413 of stop block 412

Second surface 42 latch arm 421

Projection 422 side 43

Stop 4311 of return 431

Contact portion 4312 tab 4313

Positioning leg 4314 gap 4315

Rear end 44 front end 45

Plastic housing 5 with inclined transition 46

The accommodation space 50 is inclined to the guide portion 501

Upper wall 51 sliding groove 511

Lower wall 52 of recess 512

Front port 54 of sidewall 53

First stop ring 541 and second stop ring 542

Groove 543 rear port 55

Card slot 551 stiffener 6

Frame 61 holds foot 611

Through hole 612 metal weld plate portion 62

Waterproof ring 7 of positioning column 63

Glue filling space 80 of waterproof glue plate 8

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

[ Detailed description ] of the invention

Hereinafter, a specific embodiment of the electrical connector of the present invention will be described with reference to fig. 1 to 12.

Referring to fig. 1 to 12, the present invention provides an electrical connector 100, which includes an insulating body 1, a conductive terminal 2 fixed on the insulating body 1 to form a terminal module with the insulating body 1, a middle reinforcing plate 3 fixed on the insulating body 1, a metal housing 4 for accommodating the terminal module, a plastic housing 5 sleeved outside the metal housing 4, a reinforcing member 6 integrally formed on the plastic housing 5, a waterproof ring 7 sleeved on the head of the plastic housing 5, and a waterproof rubber plate 8 sealed at the rear end of the electrical connector 100. The waterproof rubber plate 8 is formed behind the electric connector by pouring to be solidified, and the waterproof rubber plate 8 is made of silica gel and resistant to high temperature.

Referring to fig. 1 to 12, the insulating body 1 includes a base 11, a tongue plate extending forward from the base 11, and a vertically disposed back plate 13 located at the back end of the base 11 and higher than an upper surface 111 and a lower surface 112 of the base 11. The base 11 is further provided with side portions 113 on both sides of the upper surface 111 and the lower surface 112, a front end surface 114 on the front end of the base 11, a pair of holding grooves 115 formed on the upper surface 111 recessed rearward and downward from the front end surface 114, a pair of locking grooves 116 formed on the lower surface 112 recessed forward and upward from the rear end surface of the base, and a supporting portion 117 extending to the rear end surface of the base between the pair of locking grooves 116. The tailgate 13 includes a front surface 131 and side rest portions 132 on either side.

Referring to fig. 9 to 12, the conductive terminals 2 are disposed in the insulating body and are arranged in a row. Comprises a connecting part 22 fixed on the base 11, a contact part 21 extending forwards from the connecting part 22 and arranged on the lower surface of the tongue plate 12, and a welding part 23 extending backwards from the connecting part 22, extending out of the insulating body 1 and welded on a circuit board (not shown).

Referring to fig. 9 to 12, the middle reinforcing sheet 3 is fixed on the insulating body 1 and is located above the conductive terminal 2. The middle reinforcing sheet 3 comprises a main body 31, a circular arc-shaped head 32 positioned in front of the main body 31 for grasping the tongue plate 12, and a welding leg 33 formed by bending and extending from the main body 1 to two sides. The fillets 33 are exposed at both sides of the base 11.

Referring to fig. 2 to 12, the metal housing 4 includes a receiving space 40 for receiving the insulating body 1. The metal case 4 includes a first surface 41, a second surface 42 disposed opposite to the first surface 41, and a side 43 connecting the first surface 41 and the second surface 42. The metal case 4 further includes a front end 45, a rear end 44, and an inclined transition 46 that forms a part of the accommodating space 40 and is inclined along the side 43 toward the second surface 42. The metal case 4 further includes a pair of holding blocks 412 protruding from the first surface 41 into the accommodating space 40 and held by the holding grooves 115, a projection 411 protruding upward from the first surface 41 in front of the holding blocks 412, a stopper 413 provided at the rear end 44 and positioned on the first surface 41, a pair of latch arms 421 extending upward from the second surface 42 into the accommodating space 40 near the rear end 44 and held by the latch grooves 116, and a protruding portion 422 extending rearward between the pair of latch arms 421 and held by the rear baffle 13. The rear baffle 13 of the insulating body 1 is pressed forward against the rear end 44 of the metal housing 4 and protrudes beyond the first surface 41 and the second surface 42. While the tailgate 13 has the shelf side portion 132 that is shelf-resting above the stop 4311. The metal shell 4 is formed with a folded portion 431 by bending forward the two lateral sides of the rear end thereof, i.e., the folded portion 431 formed by bending forward the side portion 43. The folded portion 431 includes a stop portion 4311 that is bent forward and abuts against the rear end of the plastic housing 5, an abutting portion 4312 that is formed by extending forward from the stop portion 4311 and abuts against two lateral sides of the plastic housing 5, a soldering lug 4313 that is formed by extending outward from the lower end edge of the abutting portion 4312, and a positioning leg 4314 that is fixed on the circuit board and is bent downward and is arranged at a distance behind the soldering lug 4313. The positioning leg 4314 is located below the stop portion 4311, and a gap 4315 is formed between the positioning leg and the stop portion in the up-down direction.

Referring to fig. 5 to 12, the metal housing 4 is assembled into the plastic housing 5 from the back to the front such that the plastic housing 5 encloses the metal housing 4 and has an accommodating space 50 for accommodating the metal housing 4. The plastic housing 5 is provided with metal welding plate portions 62 on both lateral sides thereof. The plastic housing 5 has a frame shape and has an inclined guide portion 501 corresponding to the inclined transition portion 46 inside the accommodating space 50. The plastic housing 5 includes an upper wall 51, a lower wall 52 disposed corresponding to the upper wall, a side wall 53 connecting the upper wall 51 and the lower wall 52, a front port 54, and a rear port 55 disposed corresponding to the front port 54. The upper wall 51 has a pair of sliding grooves 511 provided at intervals on a side corresponding to the accommodation space 50, and a recess 512 provided near the rear port 55 and located between the pair of sliding grooves 511. The projection 411 is fixed to the front end of the sliding groove 511, and the stopper 413 is located in the recess 512. The front port 54 is correspondingly provided with a first stop ring portion 541, a second stop ring portion 542 disposed at a rear of the first stop ring portion 541 with a larger outer diameter than the first stop ring portion 541, and a groove 543 disposed between the first stop ring portion 541 and the second stop ring portion 542. The waterproof ring 7 is sleeved on the groove 543, however, the waterproof ring 7 may be directly formed on the groove 543 by liquid silica gel, and the combination of the waterproof ring 7 and the groove 543 is not limited. The rear port 55 is further provided with a concave-forward slot 551, and the stop portion 4311 of the metal housing 4 is clamped in the slot 551.

Referring to fig. 5 to 8, the reinforcement member 6 is integrally formed on the lower wall 52 of the plastic housing 5 and has a frame 61, a pair of metal solder plate portions 62 extending from the frame 61 to two sides of the side wall 53 of the metal housing 5, and positioning posts 63 extending from the inner side of the frame 61 downward from the lower wall 53 to contact with the circuit board of the metal housing 5. The frame 61 is formed in the lower wall 53 and has holding legs 611 held in the metal shell 5 and through holes 612 formed in the lower wall 53. The soldering lug 4313 of the metal shell 5 is welded to the metal welding plate 62 in a laser manner. The metal welding plate 62 is welded and fixed with the circuit board by laser to strengthen the strength of the circuit board.

The rear end face of the terminal module and the rear end of the plastic housing 5 form a glue filling space 80, and the glue filling space 80 is filled with silica gel to form a waterproof glue plate 8 positioned at the rear end of the electric connector 100. The folded portion 431 is folded back from the rear end of the metal housing 4 and then is clamped in a clamping groove 551 provided on the rear end face of the plastic housing 5, and is folded forward, and a portion of the folded portion 431 extending from the rear end of the metal housing 4 to the stop portion 4311 is located in the glue filling space 80 and is buried by the waterproof glue plate 8.

The waterproof glue plate 8 is formed at the rear end of the electrical connector 100 for waterproofing.

A manufacturing method of an electric connector comprises the steps of providing an insulating body 1, integrally forming a conductive terminal 2 and an intermediate reinforcing sheet 3 on the insulating body 1, enabling the intermediate reinforcing sheet 3 to be located above the conductive terminal 2, providing a metal shell 4, enabling a terminal module formed by the insulating body 1, the conductive terminal 2 and the intermediate reinforcing sheet 3 to be installed into the metal shell 4 from back to front to form a first semi-finished product, enabling a supporting block 412 to be supported against a supporting groove 115 during the process, enabling a locking arm 421 to be supported against a locking groove 116, enabling a rear end 44 of the metal shell 4 to be blocked by the locking arm 421 to be used for fixing the terminal module and the metal shell 4 to be prevented from falling off, providing a plastic shell 5 sleeved with a waterproof ring 7 and a reinforcing piece 6, enabling the plastic shell 5 and the reinforcing piece 6 to be integrally formed into a second semi-finished product, enabling the first semi-finished product to be installed into the first semi-finished product from back to front, enabling the protruding block 411 to be supported against the supporting groove 115 from back to front until being blocked in the sliding groove 413 is blocked in front, enabling the blocking block to be blocked against the supporting groove 413 to be blocked by the sliding groove to be located at the front, enabling the blocking block to be located at the front portion of the locking groove 413 to be located at the front portion of the sliding groove 511, enabling the locking arm 421 to be blocked by the locking arm to be blocked by the elastic member to be located at the end of the metal shell 4, and the metal shell 4 to be located at the end of the middle reinforcing sheet 3 is located at the middle, and the middle reinforcing piece 3 is located at the middle, and the insulating body is located between the insulating body is fixed to be located at a position and the insulating body 1, and the insulating body is fixed. After the assembly is completed, the assembly is passed through a furnace and subjected to high temperature, and meanwhile, as the waterproof glue plate 8 is close to the welding part 23, the waterproof glue plate 8 cannot warp due to high temperature resistance of silica gel, and the waterproof performance is better than that of common glue, such as epoxy glue, and the effect of the waterproof glue plate is better. Meanwhile, the reinforcing piece 6 is integrally formed in the plastic shell 5 so as to be fixed with the metal shell 4 by laser welding, the fixing effect is good, and meanwhile, the strength of the circuit board is reinforced by the reinforcing piece 6.

The foregoing is only some, but not all, embodiments of the present invention, and any equivalent modifications of the technical solution of the present invention will be covered by the claims of the present invention by a person of ordinary skill in the art from reading the present specification.

Claims

1. An electrical connector, comprising an insulating body, a conductive terminal fixed to the insulating body to form a terminal module with the insulating body, a metal shell for accommodating the terminal module and a plastic shell sleeved outside the metal shell, the insulating body comprising a base and a tongue plate extending forward along the base, the conductive terminal comprising a contact portion exposed to the tongue plate and a welding portion extending backward from the rear end of the insulating body, characterized in that the metal shell for accommodating the terminal module is assembled to the plastic shell from back to front, the lateral sides of the rear end of the metal shell are respectively bent forward to form a folded portion, the lateral sides of the plastic shell are respectively provided with a metal welding plate portion, the folded portion has a stopping portion that abuts against the rear end of the plastic shell forward to stop the plastic shell from moving backward, and a welding piece welded to the metal welding plate portion.

2. The electrical connector according to claim 1, wherein the folded portion is further provided with abutment portions abutting against the lateral side walls of the plastic housing, and the welding sheet is formed by extending outward from the lower edge of the abutment portions.

3. The electrical connector as claimed in claim 2, characterized in that: the folded portion is further provided with a positioning foot which is bent backward and then downward from the rear end edge of the abutting portion and is spaced apart from the welding piece.

4. The electrical connector according to claim 1, wherein two sides of the rear end surface of the plastic housing are concavely formed forward to form a pair of slots, and the upper and lower limits of the stopper are located in the slots.

5. The electrical connector according to claim 1, wherein the rear end surface of the terminal module and the rear end of the plastic housing form a glue filling space, and the glue filling space is filled with silica gel to form a waterproof rubber plate located at the rear end of the electrical connector.

6. The electrical connector as described in claim 5 is characterized in that: the folded portion is bent backward from the rear end of the metal shell and then clamps the rear end surface of the plastic shell and then bends forward, and the part of the folded portion extending from the rear end of the metal shell to the stop portion is located in the glue filling space and is buried by the waterproof rubber plate.

7. The electrical connector as described in claim 6 is characterized in that: the insulating body also includes a vertically arranged rear baffle located at the rear end of the base, the rear baffle is forwardly pressed against the rear end of the metal shell, and the waterproof rubber plate is forwardly pressed against the rear baffle and seals the rear end of the electrical connector.

8. The electrical connector as described in claim 1 is characterized in that: the electrical connector also includes a reinforcement member integrally formed with the plastic shell, the reinforcement member is made of metal, the reinforcement member is embedded in the lower wall of the plastic shell and has the metal welding plate portion extending out of both sides of the plastic shell.

9. The electrical connector as described in claim 7 is characterized in that: the rear baffle includes side portions located on both sides, the side portions rest on the stop portion, and the front surface of the rear baffle is abutted against the rear end of the metal shell and extends beyond the first surface and the second surface of the metal shell set in the upper and lower directions.

10. The electrical connector as described in claim 9 is characterized in that: the insulating body includes a supporting groove located on the upper surface of the base and recessed downward and backward from the front end surface of the base, and a locking groove located on the lower surface of the base and recessed forward and upward from the rear end surface of the base, and the metal shell includes a supporting block located on the first surface and supported by the supporting groove, a protrusion located in front of the supporting block and protruding upward, and a locking arm located on the second surface and locked in the locking groove.