[embodiment]
See also Fig. 1 to shown in Figure 8, the utility model electric connector 100 is a USB 3.0A type socket connector, in order to be installed on the circuit board for USB 2.0A type banjo (not shown) and USB 3.0A type banjo (not shown) grafting, it comprises: insulating body 1, be installed on positioning seat 2 on the insulating body 1, be located at the plurality of conductive terminals 3 on the insulating body 1 and the shielding casing 4 of coated insulation body 1.
See also Fig. 6 to shown in Figure 8, described insulating body 1 comprises body 11 and from body 11 hyoplastron 12 that extends of one forward.Described body 11 is roughly rectangular-shaped, comprises the front end face 1101 that connects hyoplastron 12, rear end face 1102, two side end faces 1103 front end face 1101 and rear end face 1102 between and the bottom face 1104 that be positioned at body 11 bottoms relative with front end face 1101.Described body 11 upwards caves in from bottom face 1104 first host cavity 111, and described first host cavity 111 runs through front end face 1101 forward.Described body 11 comprises and is positioned at first host cavity, 111 side walls 115 and is positioned at first host cavity, 111 rear sides and connects the rear wall 116 of two side 115, described sidewall 115 is equipped with step-like stage portion 1150,1160 with rear wall 116, and described two side 115 is concaved with the fixing recess 114 that is communicated with first host cavity 111.Described rear wall 116 is provided with from stage portion 1160 depression and be communicated with first host cavity 111 forward and run through second host cavity 112 of rear end face 1102 backward upwards.Described hyoplastron 12 be from body 11 front end faces 1101 tops forward vertical extent form and be positioned at the top of first host cavity 111.Described hyoplastron 11 is for tabular and comprise the lower surface 121 that upper surface 122 reaches towards first host cavity 111.Five second rectangular-shaped terminal grooves 124 that described lower surface 121 is concaved with four lengthwise shape the first terminal grooves 123 and is positioned at the first terminal groove 123 the place aheads.
See also Fig. 6 to shown in Figure 7, described positioning seat 2 comprises in order to be housed in the base portion 21 in first host cavity 111 and to extend flat part 22 forward from base portion 21 bottoms.Described base portion 21 comprises the side surface 201 that is positioned at two side ends, the front surface 202 that is positioned at front end, the rear surface 203 relative with front surface 202 and the bottom surface 204 that is positioned at the bottom.Described base portion 21 is provided with the terminal holding slot 201 that four intervals were provided with and ran through front surface 202 and rear surface 203, jube 212, the some depressed parts 213 that is formed at the slot part 211 between the adjacent jube 212 and is positioned at jube 212 tops that the some intervals in rear surface 203 extends rearwardly into insulating body 1 second host cavity 112 are provided with.Described base portion 21 also be provided with from both side surface 201 respectively to both sides protrude out in order to the insulating body 11 fixing recesses 115 fixing protuberance 214 of buckle mutually, so can prevent to move before and after positioning seat 2 is on insulating body 1.Described positioning seat 2 is outward extended with from flat part 22 both sides in order to support the extension 221 on insulating body 1 stage portion 1150, so, can prevent excessively motion in first host cavity 111 of positioning seat 2.
See also Fig. 4 to shown in Figure 6, described conducting terminal 3 comprises that four be arranged side by side and be installed on the first terminal 31 on the positioning seat 2 and five are arranged side by side and inlay and is embedded in second terminal 32 in the insulating body 1.Described second terminal 32 is positioned at the skin of the first terminal 31, promptly, second terminal 32 is coated on the outside of the first terminal 31, bearing of trend along hyoplastron 12, the main part 311 of described the first terminal 31 is positioned at the downside of second terminal, 32 main parts 321, and the offset portion 314 of described the first terminal 31 is positioned at the place ahead of second terminal, 32 vertical portions 323.Described the first terminal 31 is in order to docking with USB 2.0A type plug, and described second terminal 32 and the first terminal 31 are jointly in order to dock USB 3.0A type plug.
Described the first terminal 31 comprises flat main part 311, autonomous body 311 front ends extend forward and form and rubber-like overshooting shape contact site 312, autonomous body 311 other ends extend back and form and accommodate and be immobilizated in holding parts 313 in the positioning seat 2 terminal holding slots 210, bend the offset portion 314 of extending vertically downward from holding parts 313, horizontal part 3151 from the offset portion 314 vertical extensions of bending backward, connect horizontal part 3151 is terminal and bending downwards forms vertical portion 3152 and from the vertical portion 3152 further backward level be bent to form in order to post the weld part 316 that is welded to circuit board (not shown).Described main part 311 all is contained in the first terminal groove 123 of hyoplastron 12 with contact site 312, and described contact site 312 protrudes out the lower surface 121 of hyoplastron 12 downwards.Offset portion 314 along continuous straight runs of described four the first terminals 31 are arranged in a row, from the direction of extending from top to down, described offset portion 314 is respectively from the skew of middle part, two laterals, so be provided with, can make from the spacing between the adjacent body portion 311 that the extension of offset portion 314 upper ends forms greater than the spacing between the weld part 316 that forms from the extension of offset portion 314 lower ends.Stage portion 315 of described continuous horizontal part 3151 and vertical portion 3152 common formation, described stage portion 315 can make the position at weld part 316 places be positioned at the rear of offset portion 314.When described the first terminal 31 is installed on the positioning seat 2, described offset portion 314 all is contained in the depressed part 213 of positioning seat 2 rear ends, and described stage portion 315 is fastened in the slot part 211 between the adjacent jube 212 one by one, so is provided with, and can make stage portion 315 stable being immobilizated on the positioning seat 2.Described stage portion 315 is positioned at second host cavity 112 of insulating body 1, and described weld part 316 is positioned at the below of second host cavity 112.
Described second terminal 32 comprises that the tabular contact site 322 of main part 321 belows is extended and convexedly stretches in flat main part 321, autonomous body 321 front ends bending, autonomous body 321 other ends extend vertical portion 323 that forms and the weld part 324 that the vertical bending backward in 323 bottoms is extended from the vertical portion downward vertically.Described contact site 322 more is positioned at the front end of hyoplastron 12 compared to the contact site 312 of the first terminal 31.Vertical portion 324 along continuous straight runs of described five second terminals 32 are arranged in a row, from the direction of extending from top to bottom, described vertical portion 324 is provided with the offset portion 3230 that is offset laterally by the middle part respectively, so be provided with, can make the weld part 316 of second terminal 32 be separated into two parts in order to be arranged in the both sides of the first terminal 31 weld parts 316 to both sides by the middle part, and the offset portion 314 of described the first terminal 31 is to bias internal, so can make the weld part 316 of the first terminal 31 and second terminal 32,324 are arranged in a row more equably, and shared space is less.Main part 321 edges of described second terminal 32 are embedded in the hyoplastron 12.Described contact site 322 is exposed in second terminal groove 124 of hyoplastron.Described vertical portion 323 edges are embedded in the rear wall 116 of insulating body 1, and described weld part 324 protrudes out the stage portion 1160 of rear wall 116 downwards and is arranged in the both sides of second host cavity 112.
See also shown in Figure 5ly, described the first terminal 31 is respectively an earth terminal 3101,3102,3103, power supply terminals 3104 of a pair of difference signal terminal (comprising positive signal terminal, negative signal terminal) from left to right.Described second terminal 32 is respectively 3201,3002, earth terminals 3203 of a pair of difference signal terminal from left to right, another is to difference signal terminal 3204,3205.The earth terminal 3203 of described second terminal 32 is roughly tuning fork-like, comprise promptly that a main part 321, autonomous body 321 bifurcateds extend two offset portion 3230 of extending to both sides and two respectively from different offset portion 3230 backward the level bending extend the weld part 324 that forms, so be provided with, described second terminal 32 is provided with six weld parts 324, i.e. the weld part 324 of the weld part 324 of two pairs of difference signal terminal 3201,3002,3204,3205 and two earth terminals 3203.When first, second terminal 31,32 of conducting terminal 3 is combined, the main part 311 and the offset portion 314 of described the first terminal 31 is positioned at the main part 321 of second terminal 32 and the inboard of vertical portion 323, be the downside that the main part 311 of described the first terminal 31 is positioned at second terminal, 32 main parts 321, and the offset portion 314 of described the first terminal 31 is positioned at the place ahead of second terminal, 32 vertical portions 323.The stage portion 315 of described the first terminal 31 all is positioned at the tuning fork-like opening 325 of the earth terminal 3203 of second terminal 32, and the vertical portion 3152 of stage portion 315 and the vertical portion 323 of second terminal are arranged in a row, promptly be positioned at same plane, so be provided with, can make the arrangement of the weld part 316,324 of conducting terminal 3 have consistency, the crooked place that is weld part 316,324 is consistent with bending angle, make electric connector 100 in welding process, keep the consistency of weld part 316,324, be convenient to the assembling of electric connector 100.Be not provided with stage portion 315 between the weld part (not shown) of the first terminal (not shown) and the holding parts (not shown) in the known techniques, and described weld part is directly to be bent to form backward by a rake that directly tilts to bend from holding parts (not shown) end, though so the weld part crooked place that forms is identical with the crooked place of the weld part 324 of enemy's second terminal 32, but bending angle is inequality, when electric connector 100 in when welding, easily make the weld part and second terminal 324 of the first terminal can not guarantee a good coplane degree, be unfavorable for assembling.The width of the main part 321 of the earth terminal 3203 of described second terminal 32 is greater than the width of the main part 321 of second terminal, 32 difference signal terminal 3201,3201,3204,3205, so be provided with, can strengthen the shield effectiveness of earth terminal 3203, reduce the signal cross-talk between two pairs of difference signal terminal 3201,3201,3204,3205.
See also Fig. 6 and shown in Figure 8, described shielding casing 4 comprises roof 41, diapire 42, connect the two side 43 of roof 41 and diapire 42 and in order to the aft bulkhead 44 of coated insulation body 1 rear end, described two side 43 is extended with downwards respectively in order to be installed to the fixing pin 45 on the circuit board, and described roof 41, diapire 42 enclose jointly with two side 43 and form above-mentioned interface 101 in order to dock banjo.The contact site 312,322 of described conducting terminal 3 all is exposed in the described interface 101.
See also shown in Figure 5, in the utility model, the weld part 316,324 of described conducting terminal 3 is respectively the weld part 324 of the weld part 316 of the weld part 324 of a pair of difference signal terminal 3201,3202, one of them weld part 324 of earth terminal 3203, the weld part 316 of earth terminal 3101, a pair of difference signal terminal 3102,3103, the weld part 316 of power supply terminal 3104, another weld part 324 of earth terminal 3203, a pair of difference signal terminal 3204,3205 from left to right.In other embodiments, the weld part 316 of the earth terminal 3101 of described the first terminal 31 or power supply terminal 3104 can be positioned at the outside of the tuning fork-like opening of earth terminal 3203.Promptly, guarantee a pair of difference signal terminal 3201,3202 and adjacent another to being provided with the weld part 316,324 of two earth terminals 3101,3203 between the difference signal terminal 3102,3103, guarantee to be provided with between difference signal terminal 3102,3103 and another adjacent differential signal terminal 3204,3205 weld part 316 of a power supply terminal 3104 and the weld part 324 of an earth terminal 3103 simultaneously.So be provided with, increased the shield effectiveness between adjacent two pairs of difference signal terminal, reduced crosstalking between described two pairs of difference signal terminal, further improved the signal transmitting quality of electric connector 100.