Electrical connector

Abstract

The present invention provides 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 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, the metal shell 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 stopper portion abutting against the rear end of the plastic shell forward and a welding piece welded to the metal welding plate portion. The waterproof effect is good and the holding effect is good.

Description

[Technical field]

[0001] The present invention relates to an electrical connector, and in particular to an electrical connector suitable for forward and reverse insertion. [Background technology]

[0002] Referring to Chinese invention patent No. CN108270106B, the previous case disclosed an electrical connector. When the semi-finished product of the terminal module and the shielding shell are assembled with the outer shell, the retaining structure on the bracket structure integrally formed with the outer shell is used to retain the rear end of the insulating body to achieve stability between the two. The rear end protrusion of the insulating body is made of plastic, which is easily damaged and has a poor retaining effect.

[0003] Therefore, it is necessary to provide a new electrical connector to overcome the above-mentioned defects. [Summary of the invention]

[0004] The object of the present invention is to provide an electrical connector with good waterproof effect and good retaining effect.

[0005] The objective of the present invention is achieved through the following technical solutions: an electrical connector, comprising an insulating body, a conductive terminal fixed on the insulating body to form a terminal module with the insulating body, a metal shell 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 out of the rear end of the insulating body, the metal shell 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 stopper portion pressed forward against the rear end of the plastic shell and a welding piece welded to the metal welding plate portion.

[0006] Furthermore, 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 end edge of the abutment portions.

[0007] Furthermore, 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.

[0008] Furthermore, two sides of the rear end surface of the plastic shell are concavely arranged forward to form a pair of slots, and the upper and lower limits of the stopper are located in the slots.

[0009] Furthermore, the rear end surface of the terminal module and the rear end of the plastic housing form a glue-filling space, and silica gel is filled into the glue-filling space to form a waterproof rubber plate located at the rear end of the electrical connector.

[0010] Furthermore, the folded portion is formed by bending backward from the rear end of the metal shell and then clamping the rear end surface of the plastic shell and then bending forward. The folded portion extending from the rear end of the metal shell to the stopper is located in the glue pouring space and buried by the waterproof rubber plate.

[0011] Furthermore, 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.

[0012] Furthermore, the electrical connector also includes a reinforcement member integrally formed with the plastic housing, the reinforcement member is made of metal, is embedded in a lower wall of the plastic housing and has the metal welding plate portion extending out of both sides of the plastic housing.

[0013] Furthermore, the rear baffle includes side portions located on both sides, the side portions are supported 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 in the vertical direction.

[0014] Furthermore, 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.

[0015] Compared with the prior art, the present invention has the following beneficial effects: the silicone is cast and molded at the rear end of the electrical connector, and does not deform or melt after being passed through a high-temperature furnace, and has a better waterproof effect. At the same time, the folded portion of the metal shell is bent forward and laser-fixed to the welding piece of the outer plastic shell, which has a good stopping effect and a good fixing effect.

Brief Description of the Drawings

[0016] Figure 1 It is a three-dimensional diagram of the electrical connector of the present invention.

[0017] Figure 2 yes Figure 1 View from the other direction.

[0018] Figure 3 It is a three-dimensional view of the electrical connector of the present invention when the waterproof rubber plate 8 is separated from the electrical connector.

[0019] Figure 4 It is a schematic diagram of the electrical connector of the present invention viewed from top to bottom.

[0020] Figure 5 It is a three-dimensional exploded view of the electrical connector of the present invention.

[0021] Figure 6 yes Figure 5 View from the other direction.

[0022] Figure 7 It is a three-dimensional exploded view of the reinforcing member, the plastic shell and the waterproof ring of the present invention. Figure 8 yes Figure 7 View from the other direction.

[0023] Fig. 9 yes Figure 4 Further exploded view.

[0024] Fig.10 yes Fig. 9 View from the other direction.

[0025] Fig.11 yes Figure 1 Section view from AA direction.

[0026] Fig.12 yes Figure 1 Section view along line BB.

[0027]

Main component symbol description

[0028] Electrical connector 100 Insulation body 1

[0029] Base 11 Upper surface 111

[0030] Lower surface 112 Side portion 113

[0031] Front end surface 114 Retaining groove 115

[0032] Locking groove 116 Supporting portion 117

[0033] Tongue plate 12 Rear baffle 13

[0034] The front surface 131 is supported by the side portion 132

[0035] Conductive terminal 2 Contact portion 21

[0036] Connecting part 22 Welding part 23

[0037] Middle reinforcement sheet 3 Main body 31

[0038] Head 32 Welding foot 33

[0039] Metal shell 4 Accommodation space 40

[0040] First surface 41 Bump 411

[0041] Support block 412 Stop block 413

[0042] Second surface 42 Locking arm 421

[0043] Protrusion 422 Side 43

[0044] Folding portion 431 Stopping portion 4311

[0045] Abutment portion 4312 Welding piece 4313

[0046] Positioning foot 4314 Clearance 4315

[0047] Rear end 44 Front end 45

[0048] Inclined transition portion 46 Plastic housing 5

[0049] Accommodating space 50 Inclined guide portion 501

[0050] Upper wall 51 Sliding groove 511

[0051] Recessed portion 512 lower wall 52

[0052] Side wall 53 Front port 54

[0053] The first stop ring portion 541 The second stop ring portion 542

[0054] Groove 543 Rear port 55

[0055] Card slot 551 Reinforcement member 6

[0056] Frame 61 Holding foot 611

[0057] Through hole 612 Metal welding plate portion 62

[0058] Positioning column 63 Waterproof ring 7

[0059] Waterproof rubber sheet 8 Glue filling space 80

[0060] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. [Specific implementation method]

[0061] The following will be combined Figures 1 to 12 The specific implementation of the electrical connector of the present invention is introduced.

[0062] Please refer to Figures 1 to 12As shown, the present invention provides an electrical connector 100, comprising an insulating body 1, a conductive terminal 2 fixed to the insulating body 1 to form a terminal module with the insulating body 1, an intermediate reinforcing sheet 3 fixed to the insulating body 1, a metal shell 4 accommodating the terminal module, a plastic shell 5 sleeved outside the metal shell 4, a reinforcing member 6 integrally formed on the plastic shell 5, a waterproof ring 7 sleeved on the head of the plastic shell 5, and a waterproof rubber plate 8 sealed at the rear end of the electrical connector 100. The waterproof rubber plate 8 is cast and formed at the rear of the electrical connector to solidify, and the material of the waterproof rubber plate 8 is silicone, which is resistant to high temperature.

[0063] Please refer to Figures 1 to 12 The insulating body 1 includes a base 11, a tongue plate extending forward from the base 11, and a vertically arranged rear baffle 13 located at the rear end of the base 11 and higher than the upper surface 111 and the lower surface 112 provided on the base 11. The base 11 also includes side portions 113 located at both sides of the upper surface 111 and the lower surface 112, a front end surface 114 located at the front end of the base 11, a pair of abutment grooves 115 located on the upper surface 111 and formed by being recessed backward and downward from the front end surface 114, a pair of locking grooves 116 located on the lower surface 112 and formed by being recessed forward and upward from the rear end surface of the base, and a support portion 117 located between the pair of locking grooves 116 and extending to the rear end surface of the base. The rear baffle 13 includes a front surface 131 and supporting side portions 132 located on both sides.

[0064] Please refer to Figures 9 to 12 The conductive terminals 2 are arranged in a row in the insulating body, including a connecting portion 22 fixed to the base 11, a contact portion 21 extending forward from the connecting portion 22 and arranged on the lower surface of the tongue plate 12, and a soldering portion 23 extending backward from the connecting portion 22 out of the insulating body 1 and soldered to a circuit board (not shown).

[0065] Please refer to Figures 9 to 12 The intermediate reinforcing sheet 3 is fixed to the insulating body 1 and is located above the conductive terminal 2. The intermediate reinforcing sheet 3 includes a main body 31, an arc-shaped head 32 located in front of the main body 31 for grasping the tongue 12, and welding feet 33 extending from the main body 1 to both sides. The welding feet 33 are exposed on both sides of the base 11.

[0066] Please refer to Figures 2 to 12The metal shell 4 includes a receiving space 40 for receiving the insulating body 1. The metal shell 4 includes a first surface 41, a second surface 42 arranged opposite to the first surface 41, and a side portion 43 connecting the first surface 41 and the second surface 42. The metal shell 4 also includes a front end portion 45, a rear end portion 44, and an inclined transition portion 46 which is inclined along the side portion 43 toward the second surface 42 and forms a part of the receiving space 40. The metal shell 4 further includes a pair of abutting blocks 412 formed by the first surface 41 protruding into the receiving space 40 and abutting against the abutting groove 115, a convex block 411 formed by protruding upward from the first surface 41 and located in front of the abutting blocks 412, a stopper block 413 disposed at the rear end 44 of the first surface 41, a pair of locking arms 421 extending upward from the second surface 42 into the receiving space 40 near the rear end 44 and abutting against the locking groove 116, and a protruding portion 422 extending backward between the pair of locking arms 421 and abutting against the rear baffle 13. The rear baffle 13 of the insulating body 1 abuts forward against the rear end 44 of the metal shell 4 and exceeds the first surface 41 and the second surface 42. At the same time, the rear baffle 13 has the supporting side portion 132 supporting against the upper part of the stopper 4311. The two lateral sides of the rear end of the metal shell 4 are respectively bent forward to form a folded portion 431, that is, the folded portion 431 is formed by bending outward and forward from the side portion 43. The folded portion 431 includes a stopper 4311 bent outward and forward to abut against the rear end of the plastic shell 5, a contact portion 4312 extending forward from the stopper 4311 to abut against the lateral sides of the plastic shell 5, a welding piece 4313 extending outward from the lower edge of the contact portion 4312, and a positioning foot 4314 bent backward and downward and fixed to the circuit board and arranged at intervals behind the welding piece 4313. The positioning foot 4314 is located below the stopper 4311, and there is a gap 4315 between the two in the up and down directions.

[0067] Please refer to Figures 5 to 12The metal shell 4 is loaded into the plastic shell 5 from the back to the front so that the plastic shell 5 covers the metal shell 4 and has a receiving space 50 for receiving the metal shell 4. The plastic shell 5 is provided with metal welding plate parts 62 on both sides of the lateral direction. The plastic shell 5 is frame-shaped and has an inclined guide part 501 located on the inner side of the receiving space 50 corresponding to the inclined transition part 46. The plastic shell 5 includes an upper wall 51, a lower wall 52 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 corresponding to the front port 54. The upper wall 51 has a pair of sliding grooves 511 arranged at intervals on one side corresponding to the receiving space 50 and a recess 512 located in the middle of the pair of sliding grooves 511 and close to the rear port 55. The protrusion 411 is clamped and fixed at the front end of the sliding groove 511, and the stop block 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 spaced behind the first stop ring portion 541 and having an outer diameter larger than that of the first stop ring portion 541, and a groove 543 between the first stop ring portion 541 and the second stop ring portion 542. The waterproof ring 7 is sleeved in the groove 543. Of course, the waterproof ring 7 can also be directly molded in the groove 543 with liquid silicone. The combination of the waterproof ring 7 and the groove 543 is not limited here. The rear port 55 is also provided with a forward recessed slot 551, and the stop portion 4311 of the metal shell 4 is clamped in the slot 551.

[0068] Please refer to Figures 5 to 8 As shown, 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 welding plate portions 62 extending from the frame 61 to both sides of the side wall 53 of the metal housing 5, and a positioning column 63 extending downward from the lower wall 53 from the inner side of the frame 61 and contacting the circuit board of the metal housing 5. The frame 61 is formed on the lower wall 53 and has a retaining foot 611 fixed to the metal housing 5 and a through hole 612 formed in the lower wall 53. The welding piece 4313 of the metal housing 5 is laser welded to the metal welding plate portion 62. The metal welding plate portion 62 is fixed to the circuit board by laser welding to strengthen the strength of the circuit board.

[0069] 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 rubber sheet 8 located at the rear end of the electrical connector 100. The folded portion 431 is bent backward from the rear end of the metal housing 4 and then clamped in the clamping groove 551 provided on the rear end face of the plastic housing 5, and then bent forward. The folded portion 431 extending from the rear end of the metal housing 4 to the stopper 4311 is located in the glue filling space 80 and buried by the waterproof rubber sheet 8.

[0070] The waterproof rubber sheet 8 is formed at the rear end of the electrical connector 100 for waterproofing.

[0071] A method for manufacturing an electrical connector, providing an insulating body 1 so that it has a base 11, a tongue plate 12 and a rear baffle 13, and then integrally forming a conductive terminal 2 and an intermediate reinforcement sheet 3 on the insulating body 1 and making the intermediate reinforcement sheet 3 located above the conductive terminal 2; providing a metal shell 4, and loading a terminal module consisting of the insulating body 1, the conductive terminal 2 and the intermediate reinforcement sheet 3 into the metal shell 4 from back to front to form a first semi-finished product, during which the abutting block 412 abuts against the abutting groove 115, the locking arm 421 abuts against the locking groove 116, and the rear baffle 13 stops at the rear end 44 of the metal shell 4 to fix the terminal module The second semi-finished product is formed by molding the plastic shell 5 and the reinforcing member 6 with a waterproof ring 7, and the first semi-finished product is loaded into the first semi-finished product from the back to the front. The protrusion 411 passes through the sliding groove 511 from the back to the front until it is clamped in the front of the sliding groove and fixed. The stop block 413 is positioned in the recess 512, and the stop portion 4311 is positioned and clamped in the clamping groove 511. The welding piece 4313 and the metal welding plate portion 62 are fixed by laser welding to achieve the fixation of the two. Silicone is poured on the rear end of the insulating body 1 to form a waterproof rubber plate 8. After the assembly is completed, it is passed through the furnace at high temperature. At the same time, because the waterproof rubber plate 8 is close to the welding portion 23 and the silicone is resistant to high temperature, the waterproof rubber plate 8 will not be warped, and the waterproof performance is good, which is better than ordinary glue, such as epoxy glue as a waterproof rubber plate. Meanwhile, the reinforcing member 6 is integrally formed with the plastic housing 5 and fixed to the metal housing 4 by laser welding, so that the fixing effect is good. Meanwhile, the reinforcing member 6 strengthens the strength of the circuit board.

[0072] The above descriptions are only some embodiments of the present invention, not all embodiments. Any equivalent changes made to the technical solution of the present invention by ordinary technicians in this field after reading the specification of the present invention are covered by the claims of the present invention.

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 that accommodates the terminal module is assembled on the plastic shell from back to front, and the two lateral sides of the rear end of the metal shell are bent forward to form a folded portion, and the two lateral sides of the plastic shell are respectively provided with a metal welding plate portion, and the folded portion has a stopping portion that presses forward against the rear end of the plastic shell 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 transverse side walls of the plastic housing, and the welding sheet is formed by extending outward from the lower end edge of the abutment portions.

3. The electrical connector according to claim 2, wherein: 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: Both sides of the rear end surface of the plastic shell are concavely arranged 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 silica gel is filled into the glue-filling space to form a waterproof rubber plate located at the rear end of the electrical connector.

6. The electrical connector according to claim 5, wherein: The folded portion is bent backward from the rear end of the metal shell, then clamps the rear end surface of the plastic shell and then bends forward. The folded portion extending from the rear end of the metal shell to the stopper is located in the glue injection space and buried by the waterproof rubber plate.

7. The electrical connector according to claim 6, wherein: 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 according to claim 1, wherein: The electrical connector further comprises a reinforcing member integrally formed with the plastic housing, the reinforcing member is made of metal, is embedded in a lower wall of the plastic housing and has the metal welding plate portions extending out of both sides of the plastic housing.

9. The electrical connector according to claim 7, wherein: The rear baffle includes side portions located on both sides, the side portions are supported on the stop portion, and the front surface of the rear baffle is abutted against the rear end of the metal shell and exceeds the first surface and the second surface of the metal shell set in the vertical direction from the vertical direction.

10. The electrical connector according to claim 9, wherein: 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. 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.

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