CN204304087U - Electric connector - Google Patents

Abstract

The utility model relates to a kind of electric connector, it comprises insulating body, in terminal module and coated insulation body, metal shell, the docking section that described insulating body comprises base portion and protrudes out forward from base portion, described base portion is arranged with a fixing hole, described docking section is provided with a butt hole, described terminal module comprises collets and is fixed on the some conducting terminals on collets, described collets comprise the leading section be plugged in forward in fixing hole and the rearward end protruding from insulating body from leading section backward, described metal shell is lengthwise tubular structure, described inner metal shell is monolithic structure, described metal shell is sheathed on inner metal shell, described inner metal shell comprises the body frame be sheathed in base portion and rearward end, described body frame is tubular structure.

Description

electrical connector

technical field

The utility model relates to an electric connector, in particular to an electric connector with a metal inner shell and a metal outer shell.

Background technique

With the fast pace of people's life and the increasing demand for fast transmission of large amounts of data, the signal transmission specifications of corresponding electronic equipment must also be improved, and the electrical connectors on electronic equipment must increase the frequency of transmission signals to cope. Since high-frequency signals are easily interfered by surrounding environmental variables and cause poor signals, the design and manufacturing standards of electrical connectors for transmitting high-frequency signals have also increased accordingly.

For the prior art related to this case, please refer to an electrical connector disclosed in Chinese Patent Application No. 2014205851157, which includes an insulating body, a terminal module assembled in the insulating body, and a metal inner shell and a metal outer shell covering the insulating body. The insulating body includes a top, a bottom, two sides connecting the top and the bottom, and a pair of connecting holes formed between the top, the bottom and the two sides, and the terminal module includes an insulating block and a plurality of conductive terminals fixed on the insulating block The insulating block includes a front end, a middle section, and a rear end. The front end is inserted into the insulating body, the middle end protrudes backward from the insulating body and is wrapped by a metal inner shell, and the rear end presses forward against the metal inner shell. , to limit the backward movement of the metal inner shell. With such a design, the fixing strength between the insulating block and the metal inner shell is not reliable, and the two are easy to loose, which may affect the use of the electrical connector.

Therefore, it is necessary to design a new electrical connector to solve the above technical problems.

Utility model content

The purpose of the utility model is to provide an electrical connector with improved high-frequency performance and structural strength.

In order to achieve the aforementioned purpose, the utility model adopts the following technical solutions: an electrical connector, which includes an insulating body, a terminal module assembled in the insulating body, and an inner and metal shell covering the insulating body, and the insulating body includes a base and a docking portion protruding forward from the base, the base is recessed with a fixing hole, the docking portion is provided with a pair of docking holes, the docking hole and the fixing hole are connected back and forth, the terminal module includes an insulating block and is fixed on A plurality of conductive terminals on the insulating block, the insulating block includes a front end inserted into the fixing hole forward and a rear end protruding from the front end backward out of the insulating body, and the conductive terminal has a front end extending forward The contact part that enters the butt joint hole behind the part and the welding foot extending backward from the rear end, the metal outer shell is a longitudinal cylindrical structure, the metal inner shell is a one-piece structure, and the metal outer shell is sleeved on the On the metal inner shell, the metal inner shell includes a main frame sheathed on the base and the rear end, and the main frame is a cylindrical structure.

As a further improvement of the utility model, the rear end of the metal shell is provided with a bent piece extending inwardly, and the bent piece presses forward against the metal inner shell.

As a further improvement of the utility model, the electrical connector also includes a metal grounding piece, the grounding piece includes a horizontal piece and a welding piece extending backward from the horizontal piece, and the welding piece is aligned with the welding feet left and right Together, the terminal modules include upper and lower terminal modules fixed together in an up-down direction, and the horizontal piece is clamped between insulating blocks of the upper and lower terminal modules.

As a further improvement of the utility model, the welding feet are arranged in two rows up and down along the left and right directions, and the welding pieces include a pair of welding pieces located on the left and right sides of the welding feet, wherein one welding piece and a row of welding feet are arranged in a row , another soldering pin is arranged in another row with another row of soldering pins.

As a further improvement of the utility model, the two rows of welding feet are aligned up and down one by one, and the two welding pieces are staggered left and right and have the same spacing as the welding feet.

As a further improvement of the utility model, the insulating blocks of the upper and lower terminal modules are provided with positioning posts and positioning holes that cooperate with each other, and the horizontal sheet has a through hole for the positioning posts to pass through.

As a further improvement of the present utility model, the insulating body is provided with a top, a bottom and opposite side parts surrounding the outside of the docking hole, and the outer surfaces of the top and the bottom are respectively provided with a first recess and located in front of the first recess. The two sides are respectively provided with limiting holes, and the metal inner shell includes a pair of shielding sheets extending forward from the upper and lower ends of the main frame and a pair of pressing sheets extending forward from the left and right ends of the main frame. The shrapnel, the shielding piece and the pressing shrapnel are spaced apart from each other, the shielding piece is accommodated in the first recess, the shielding piece has an arc-shaped abutting piece protruding from the opening into the docking hole, the pressing shrapnel Pressing against the outer surface of the side part, the pressing elastic piece has an arc-shaped pressing piece protruding from the limiting hole into the docking hole.

As a further improvement of the utility model, the top and the bottom are respectively provided with a second recess and a number of terminal grooves connecting the second recess and the docking hole, the second recess is formed by recessing from the first recess toward the docking hole, so The contact portion is partly accommodated in the terminal slot, and the electrical connector includes an insulating sheet accommodated in the second recess to prevent the contact portion from contacting the metal inner shell.

As a further improvement of the utility model, the electrical connector also includes a built-in circuit board, the surface of the built-in circuit board is provided with gold fingers welded with conductive terminals and grounding plates, and the left and right ends of the metal inner shell have rearward Two pairs of inner tails are extended, and the built-in circuit board is clamped by the two pairs of inner tails.

As a further improvement of the present utility model, the metal casing includes a top wall, a bottom wall and opposite side walls connecting the top wall and the bottom wall, and the connection between the top wall and the bottom wall and the two side walls is provided with a rearward extending The two outer tails, the outer tails cover the inner tail one by one.

As a further improvement of the utility model, the electrical connector is a USB Type C plug connector, and the outer surface of the front end of the docking part is provided with an annular convex rib, and the metal shell is pressed against the convex rib to be restricted from moving forward. .

The metal inner shell of the electrical connector of the utility model includes a main body frame sleeved on the base and the rear end. The main body frame is a cylindrical structure, which increases the external signal shielding ability of the electrical connector and improves the high frequency of the electrical connector. performance, while increasing the fixing effect between the insulating body, the terminal module and the metal inner shell, strengthening the overall structural strength of the electrical connector, and prolonging the service life of the electrical connector.

Description of drawings

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

Fig. 2 is a three-dimensional exploded view of the metal inner shell and the metal outer shell of the electric connector of the present invention separated.

FIG. 3 is a partially exploded view of the electrical connector of the present invention, showing that the terminal module is plugged into the insulating body.

FIG. 4 is a three-dimensional exploded view of the electrical connector of the present invention.

Fig. 5 is a three-dimensional exploded view of another angle of electrical connection of the utility model.

FIG. 6 is a three-dimensional schematic diagram of the electrical connection insulating body of the present invention.

Detailed ways

Please refer to Figures 1 to 6, the electrical connector 100 of the present invention is a USB Type C plug connector supporting high-frequency signal transmission, which is used for plugging a pair of connectors (not shown), which includes An insulating body 10 , a metal grounding plate 20 , two terminal modules 30 , two insulating plates 40 , a metal inner shell 60 , a metal outer shell 70 and cables (not shown). The terminal module 20 is assembled forwardly in the insulating body 10 , the built-in circuit board 50 is welded to the cable, so that the cable is electrically connected to the terminal module 30 , and the metal inner shell 60 is sleeved on the insulating body 10 and the terminal module 30 , the metal shell 70 is sheathed on the metal inner shell 60 and the terminal module 30 .

The insulating body 10 includes a base portion 11 and a butt portion 12 protruding forward from the base portion 11 . The insulating body 10 also includes a top 13 , a bottom 14 , and opposite side portions 15 connecting the top 13 and the bottom 14 . The mating portion 12 is provided with a pair of mating holes 120 formed between the top 13 , the bottom 14 and the two side portions 15 for accommodating a mating connector. The mating holes 120 are vertically symmetrical. An annular protruding rib 122 is formed on a front end side surface of the docking portion 12 . The outer surfaces of the top 13 and the bottom 14 are respectively provided with a first concave portion 131, a second concave portion 132, and a plurality of snap grooves 133. The second concave portion 132 is further recessed from the first concave portion 131 to the direction of the docking hole 120. The snap grooves 133 is located in the first recess 131 .

The top 13 and the bottom 14 are respectively provided with a plurality of openings 134 and terminal slots 135 through which the openings 134 are located in front of the terminal slots 135 and are spaced apart from each other. In front of 133 , the terminal grooves 135 respectively penetrate through the second recesses 132 . The holes 134 on the top 13 and the bottom 14 are respectively arranged in a row along the left-right direction, and the terminal slots 135 on the top 13 and the bottom 14 are also arranged in a row along the left-right direction. The two side portions 15 are respectively provided with through limiting holes 151 , and the opening 134 , the terminal groove 135 and the limiting holes 151 are all connected with the docking hole 120 .

The rear end of the base 11 is provided with a fixing hole 110 between the top 13, the bottom 14 and the two sides 15 and a partition wall 112 between the fixing hole 110 and the docking hole 120, and the partition wall 112 is provided with a connection docking hole 120 There are two rows of grooves 114 on the top and bottom of the fixing hole 110 . The top 13 and the bottom 14 are respectively provided with a plurality of fastening holes 136 communicating with the fixing holes 110 .

The ground sheet 20 is a horizontal plate structure, which includes a horizontal sheet 21 and a pair of welding sheets 22 extending backward from the left and right ends of the horizontal sheet 21. The horizontal sheet 21 is provided with a number of through holes 23, and the rear end of the horizontal sheet 21 is provided with a There is a gap 24 between the pair of welding pieces 22, and the two welding pieces 22 are staggered left and right.

The terminal module 30 includes upper and lower terminal modules 31, 32 fixed together in the up and down direction, each terminal module 30 includes an insulating block 33 and a number of conductive terminals 34 fixed on the insulating block 33, the two terminal modules The insulating blocks 33 of 31 and 32 have opposite horizontal planes, and a positioning post 334 and a positioning hole 335 that cooperate with each other are provided between the two insulating blocks 33 . The horizontal piece 21 of the ground piece 20 is clamped between the insulating blocks 33 of the two terminal modules 31, 32, so that the ground piece 20 is located between the conductive terminals 34 of the upper terminal module 31 and the lower terminal module 32, lowering the upper terminal module 31 and the lower terminal module 32. 1. Signal interference between the lower terminal modules 31 and 32 , the welding piece 22 extends backward out of the insulating block 33 , and the positioning column 334 passes through the through hole 23 of the horizontal piece 21 .

Each insulating block 33 includes a front end 331 and a rear end 332 protruding backward from the front end 331 . The thickness and width of the front end 331 are smaller than that of the rear end 332 . The front end 331 and the rear end 332 have a stepped structure. A plurality of locking blocks 333 are disposed on the outer surfaces of the front end portion 331 and the rear end portion 332 .

Each conductive terminal 34 includes a fixing portion (not shown) embedded in the insulating block 33, an arc-shaped contact portion 341 protruding forward from the fixing portion to the front end portion 331, and a rear end portion protruding backward from the fixing portion. 332, the contact portion 341 and the welding leg 342 of each terminal module 30 are arranged in a row along the left and right direction, the contact portion 341 and the welding leg 342 of the upper and lower terminal modules 31 are aligned up and down one by one, and the grounding piece The welding piece 22 of 20 is located at the outside of the welding foot 342, and is aligned with the welding foot 342. Specifically, one welding piece 22 is arranged in a row with the welding foot 342 of the upper terminal module 31, and the other welding piece 22 is aligned with the welding foot 342 of the upper terminal module 31. The welding feet 342 of the lower terminal module 32 are arranged in another row, and the distance between the two welding pieces 22 and the welding feet 342 is the same, so that the upper and lower terminal modules 31, 32, the grounding piece 20 and the built-in circuit board 50 support positive and negative directions. assembly, and at the same time facilitate the soldering process of the electrical connector 100 . The conductive terminals 34 of the two terminal modules 30 are arranged in reverse order, so that the electrical connector 100 supports forward and reverse insertion.

The front ends 331 of the upper and lower terminal modules 31, 32 and the insulating blocks 33 are plugged forward into the fixing holes 110 of the insulating body 10, and the buckling blocks 333 on the front ends 331 are buckled in the buckling holes 136 to limit the upper and lower The lower terminal modules 31 , 32 move backward, the rear end portion 332 protrudes backward from the insulating body 10 , the contact portion 341 enters the mating hole 120 through the channel 114 , and partially enters the terminal groove 135 .

The two insulating sheets 40 are accommodated in the second concave portion 132 of the insulating body 10 one by one, covering the outside of the terminal slot 135 and limiting the movement range of the contact portion 341 of the conductive terminal 34 .

The upper and lower surfaces of the front part of the built-in circuit board 50 are respectively provided with a row of golden fingers 51 and a protruding part 52 protruding forward. The soldering piece 22 of the grounding piece 20 is welded together with the golden fingers 511 one by one. Since the grounding piece 20 is welded together with the built-in circuit board 50 , the grounding effect of the electrical connector 100 is improved and the high frequency performance of the electrical connector 100 is improved. The protruding portion 52 enters into the notch 24 of the ground plate 20 and is clamped between the two insulating blocks 33 of the terminal module 30 . The two insulating blocks 33 respectively have grooves 35 for accommodating the protruding portion 52 .

The metal inner shell 60 is a one-piece structure with high structural strength. It includes a cylindrical main frame 61, a pair of shielding sheets 62 extending forward from the upper and lower ends of the main frame 61, and a pair of shielding sheets 62 extending forward from the left and right ends of the main frame 61. There are two pairs of resisting elastic pieces 63 and two pairs of inner tails 64 extending backward from the main frame 61 . Viewed along the front-to-back direction, the main frame 61 is elliptical, and the shielding piece 62 is spaced apart from the pressing elastic piece 63. The main frame 61 is provided with a plurality of first buckle pieces 611 protruding outward, a plurality of buckle holes 612 and a plurality of buckle holes 612 protruding inwardly. A plurality of second locking pieces 613 are provided. In the front-rear direction, the first locking piece 611 is located in front of the second locking piece 613 , and the locking hole 612 is located between the first and second locking pieces 611 , 613 . The shielding piece 62 has a cantilever 621 protruding outward and a plurality of elastic arms 622 extending forward. The elastic arm 622 has an arc-shaped abutting piece 623 , and the resisting elastic piece 63 has an arc-shaped abutting piece 631 protruding inward. The inner tails 64 are aligned with the soldering feet 342 of the conductive terminals 34 , and the built-in circuit board 50 is clamped between the inner tails 64 .

The main body frame 61 is sleeved on the base 11 of the insulating body 10 and the rear end 332 of the insulating block 33 of the terminal module 30. The first buckle piece 611 is buckled downward in the buckling groove 133 of the insulating body 10. The insulating block 33 The locking block 333 on the rear end portion 331 is locked in the locking hole 612 , and the inner tail portion 64 extends out of the insulating block 33 backward.

The shielding sheet 62 is accommodated in the first recess 132 of the insulating body 10 and covers the insulating sheet 40 at the same time. The insulating sheet 40 can prevent the contact portion 341 of the conductive terminal 34 from contacting the shielding sheet 62, and the abutting sheet 623 enters the docking hole from the opening 134 120, used to contact the docking connector, the pressing spring 63 is pressed against the outer surface of the side part 15 of the insulating body 10, and the pressing sheet 631 enters the docking hole 120 from the limiting hole 151, and is also used to contact the docking connector . The metal inner shell 60 is easy and convenient to assemble, reduces the production cost, and can reliably combine the insulating body 10 and the terminal module 30 together, thereby enhancing the structural strength of the electrical connector 100 .

The metal shell 70 is a longitudinal cylindrical structure, which includes a top wall 71, a bottom wall 72, and two side walls 73 connecting the top wall 71 and the bottom wall 72. The metal shell 70 presses forward against the rib 122 of the insulating body 10. Restricted to move forward, wrapped on the metal inner shell 60 , the cantilevers 621 on the metal inner shell 60 are respectively in contact with the metal shell 60 . The top wall 71 and the bottom wall 72 are respectively provided with holding holes 713 that are snapped together with the second holding piece 613 of the metal inner shell 60, and the rear ends of the top wall 71 and the bottom wall 72 are respectively bent to press against the metal inner shell. The bending piece 714 on the 60, the rear end surface of the insulating block 33 of the terminal module 30 is provided with a recess 36 for receiving the bending piece 714. The junctions of the top wall 71 , the bottom wall 72 and the two side walls 73 are provided with two outer tails 74 extending backward, and the outer tails 74 cover the inner tails 64 of the metal inner shell 60 one by one.

The electrical connector 100 of the utility model is provided with a metal inner shell 60 and a metal outer shell 70 to form a double-layer electromagnetic shielding structure, which improves the shielding effect on external electromagnetic waves and improves the high-frequency signal transmission performance of the electrical connector 100. In addition, The front end 331 of the insulating block 33 of the terminal module 30 is fixed in the fixing hole 110 of the insulating body 10, and the rear end 332 protrudes from the insulating body 10 and is fixed in the metal inner shell 60, thereby increasing the signal shielding capability of the electrical connector 100, and at the same time The fixing effect between the insulating body 10 , the terminal module 30 and the metal inner shell 60 is increased, the overall structural strength of the electrical connector 100 is enhanced, and the service life of the electrical connector 100 is prolonged.

Although preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that, without departing from the scope and spirit of the present invention as disclosed by the appended claims, Various improvements, additions, and substitutions are possible.

Claims (11)

1. an electric connector, it comprises insulating body, be assembled in terminal module in insulating body and coated insulation body, metal shell, the docking section that described insulating body comprises base portion and protrudes out forward from base portion, described base portion is arranged with a fixing hole, described docking section is provided with a butt hole, through before and after described butt hole and fixing hole, described terminal module comprises collets and is fixed on the some conducting terminals on collets, described collets comprise the leading section be plugged in forward in fixing hole and the rearward end protruding from insulating body from leading section backward, described conducting terminal have extend forward leading section after enter the contact site in butt hole and extend back the welding foot of rearward end, described metal shell is lengthwise tubular structure, described inner metal shell is monolithic structure, described metal shell is sheathed on inner metal shell, it is characterized in that: described inner metal shell comprises the body frame be sheathed in base portion and rearward end, described body frame is tubular structure.

2. electric connector according to claim 1, is characterized in that: described metal shell rear end is provided with the bent sheet extended to the inside, and described bent sheet is pressed on forward on inner metal shell.

3. electric connector according to claim 1, it is characterized in that: described electric connector also comprises a metal earthing sheet, the bonding pad that described ground strip comprises a horizontal plate and extends back from horizontal plate, described bonding pad is together with the alignment of welding foot left and right, described terminal module comprises the upper and lower end submodule group be fixed together along the vertical direction, and described horizontal plate is clamped between the collets of upper and lower end submodule group.

4. electric connector according to claim 3, it is characterized in that: described welding foot is arranged as two rows in left-right direction, described bonding pad comprises a pair bonding pad being positioned at the welding foot left and right sides, wherein a bonding pad and is arranged welding foot and is arranged in a row, another welding foot and another arrange welding foot and be arranged in another and arrange.

5. electric connector according to claim 4, is characterized in that: described two row's welding foots consistencies from top to bottom one by one, staggers and identical with the spacing of welding foot about described two bonding pads.

6. electric connector according to claim 3, is characterized in that: the collets of described upper and lower end submodule group are provided with the reference column and location hole that cooperatively interact, and described horizontal plate has the through hole passed for reference column.

7. electric connector according to claim 1, it is characterized in that: described insulating body is provided with the top be located in outside butt hole, bottom and relatively both sides, the outer surface of described top and bottom is respectively equipped with the first recess and is positioned at some perforates in the first recess front, described both sides are respectively equipped with spacing hole, what described inner metal shell comprised that the left and right end of a pair shielding plate that autonomous agent frame upper and lower side extends forward and autonomous agent frame extends forward compresses shell fragment a pair, described shielding sheet with compress shell fragment and be spaced from each other, described shielding sheet is contained in the first recess, described shielding sheet has the arc contact piece protruding into butt hole from perforate, the described shell fragment that compresses is pressed against exterior side surface, the described shell fragment that compresses has the arc arrived tableting protruding into butt hole from spacing hole.

8. electric connector according to claim 7, it is characterized in that: described top and bottom is respectively equipped with the second recess and connects some terminal grooves of the second recess and butt hole, described second recess is recessed to form towards butt hole direction from the first recess, described contact site is partially housed in terminal groove, and described electric connector comprises and being contained in the second recess to stop the insulating trip of contact site contacting metal inner casing.

9. electric connector according to claim 3, it is characterized in that: described electric connector also comprises an internal circuit board, described internal circuit board surface is provided with the golden finger welded with conducting terminal, ground strip, two ends, described inner metal shell left and right have the interior afterbody of two couple extended back, and described internal circuit board is clamped interior afterbody by two.

10. electric connector according to claim 9, it is characterized in that: described metal shell comprises roof, diapire and connects the two lateral walls of roof and diapire, the junction of described roof and diapire and two side is provided with the two external afterbodys extended back, and described outer afterbody hides one by one on interior afterbody.

11. electric connectors according to any one in claim 1-9, it is characterized in that: described electric connector is USB Type C type pin connector, the outer surface of front end, described docking section is provided with annular protruding rib, and described metal shell is pressed on fin and is limited to move forward.