The content of the invention
For background technology problem encountered, it is an object of the invention to provide one kind by metal-back, shielding case andGround strip three turns on to form complete earth-return circuit to reduce the electric connector of electromagnetic interference.
To achieve the above object, the present invention uses following technological means：A kind of electric connector, including：One insulating body, instituteStating insulating body includes a horizontal part extended forward and the vertical portion below the horizontal part；Multiple terminals, bagMultiple signal terminals and at least a ground terminal are included, each terminal has a horizontal arm and bent from the horizontal arm downwardExtend the vertical arm formed, the horizontal arm is fixed on the horizontal part, and the vertical arm is fixed on the vertical portion；One gold medalBelong to shell, coat the horizontal part, the metal-back forms an at least through hole through its surface；One ground strip, it is installed on the goldBelong to outer surface, the ground strip has an at least elastic arm, and the elastic arm enters in the metal-back through the through hole to be supportedConnect the horizontal arm of the ground terminal；One shielding case, coats the vertical portion, and the shielding case has an abutment arms, instituteState abutment arms and abut the ground strip；
Further, the ground strip is provided with an at least clasp arm, and the horizontal part corresponds to the through hole and is provided with a groove, the buttonGripping arm enters the groove through the through hole, and the opposite sides of the clasp arm protrudes out to form a convex portion respectively, the convex portionWith the inwall interference engagement of the groove, paste the ground strip and be fixed on the metal-back surface；
Further, the ground strip is stamped and formed out by a metallic plate, the plate of the plate face of the clasp arm perpendicular to the elastic armEdge；
Further, the ground strip opens up an opening through its surface, and two sides relative from the opening are bent downwards respectivelyExtension forms a clasp arm, and a crossbeam connects the other two relative sides of the opening, two clasp arm positionsIn the both sides of the crossbeam；
Further, a fixed part of extension formation is tilted down forward from the back edge of the through hole, the fixed part is located at instituteState in through hole and between the elastic arm and clasp arm and abut the horizontal part；
Further, the electric connector includes two ground strips, amplexiforms respectively in the upper surface of the metal-back and following tableFace, the abutment arms abut the ground strip for pasting the metal-back lower surface；
Further, the abutment arms include a horizontally disposed connecting portion, and first bending inclination downwards is prolonged from the connecting portionThe abutting part that horizontal forward extension is formed is stretched again, the abutting part abuts the ground strip；
Further, the connecting portion is higher than the metal-back lower surface；
Further, the shielding case has two abutment arms, and the ground strip has two elastic arms, two institutesAbutment arms are stated between two elastic arms；
Further, the shielding case has two abutment arms, and the ground strip has two elastic arms, described in twoAbutment arms are between two elastic arms；
Further, multiple terminals are symmetrically immobilizated in the horizontal part in two rows, and the shielding case is provided with least oneFirst shell fragment and at least one second shell fragment, the ground terminal arranged and the ground terminal of lower row are abutted respectively；
Further, first shell fragment abuts the vertical arm of the lower row ground terminal backward, and second shell fragment is forwardThe vertical arm of the ground terminal is arranged on abutting；
Further, the shielding case has an antetheca, extends the two side to be formed from the antetheca opposite sides, and from two institutesState sidewall edge and extend towards two rear walls to be formed, the plate face blanking of the antetheca is molded two first shell fragments, Mei YisuoThe lower edge for stating rear wall bends extension one second shell fragment of formation separately down.
Compared with prior art, the invention has the advantages that：
The metal-back coats the horizontal part, and the ground strip covers the metal-back surface, and the elastic arm is described inThrough hole enters in the metal-back horizontal arm for abutting the ground terminal, and the shielding case coats the vertical arm, described to supportConnect arm and abut the ground strip, so make the metal-back, the ground strip and the shielding case in the horizontal arm of the terminalAnd complete earth-return circuit is formd around the vertical arm, and this earth-return circuit is grounded company by the ground terminalConnect, reduce electromagnetic interference of the electric connector when transmitting high-frequency signal, improve the electric connector high frequency signal transmissionFidelity factor, the demand of the current electric connector high frequency signal transmission is adapted to.
【Embodiment】
For ease of being better understood from the purpose of the present invention, structure, feature and effect etc., in conjunction with the drawings and specific embodimentsThe invention will be further described.
As shown in Fig. 1, Fig. 8 and Fig. 9, electric connector of the present invention and another electric connector collectively constitute an electric connector groupPart, and the two is soldered to the same circuit board 6 jointly；For convenience of following description, electric connector of the present invention is defined as the first electricityConnector 2, another electric connector are the second electric connector 3.The electric coupler component includes a main body 1, and described first is electrically connectedIt is interior in setting up and down in the main body 1 to connect device 2 and second electric connector 3；Connect first electric connector 2 and describedThe preceding masking shell 4 of two electric connectors 3；And the rear masking shell 5 of the masking rear end of main body 1.In the present embodiment, first electricityConnector 2 is identical with the model of the second electric connector 3 and the two all meets USB-TYPE C transmission standard, certainly, at itIn its embodiment, the transport-type of first electric connector 2 and second electric connector 3 can according to the actual requirements withoutTogether, it is not limited herein.
As illustrated in figures 1 and 8, the main body 1 is provided with one first host cavity 11 and one second host cavity 12, and described first receivesCavity volume 11 is located at the top of second host cavity 12.First host cavity 11 houses first electric connector 2, and describedFirst host cavity, 11 front and rear insertion.Second host cavity 12 houses second electric connector 3, and second host cavity 12Lower section is provided with a breach 121 so that second electric connector 3 is welded on the circuit board 6.
Further, the front end of the side surface of the opposite sides of the main body 1 is provided with a recess 13, it is described before masking shell 4 withThe recess 13, which coordinates, to be fixed, and cover shell 5 after described fastens the main body 1 from front to back.The lower section of main body 1 is provided with multiple convexPlatform 14, it is resisted against the surface of the circuit board 6, makes the circuit board 6 is stable to support the main body 1.
As depicted in figs. 1 and 2, first electric connector 2 includes an insulating body 21, is immobilizated in the insulating body 21Interior multiple terminals 22, the one first shielding secondary shielding piece 27 of piece 26 and one in the insulating body 21, described in claddingA metal-back 23 and a shielding case 25 for insulating body 21, and two be covered each by the upper and lower surface of metal-back 23 connectGround piece 24；The metal-back 23 and the ground strip 24 are contained in first host cavity 11, and the shielding case 25 is contained in instituteThe rear end of insulating body 1 is stated, so that first electric connector 2 is fixed in the main body 1.
As shown in Figure 3 and Figure 4, the insulating body 21 extends forward a horizontal part 211 of formation including one, and is located atOne vertical portion 212 of the lower section of horizontal part 211, upper and lower surface difference two grooves of recessed formation of the horizontal part 2112111, the vertical portion 212 includes one first fixed block 2121 and one second fixed block 2122 assembled along the longitudinal direction.
Multiple terminals 22 in the horizontal part 211 in two rows in being symmetrical arranged, and terminal 22 is horizontal described in each rowInclude successively to arrangement：Ground terminal 201, a pair of difference signal terminals 202, power supply terminals（Non- label）, reserved terminal（Do not markNumber）, a pair of signal terminals 202, reserved terminal（Non- label）, power supply terminal（Non- label）, a pair of difference signal terminals 202, connectGround terminal 201, the transmission standard for making first electric connector 2 meet USB-TYPE C.Each terminal 22 has a waterFlat arm 221 and bend the vertical arm 222 that vertical extension is formed downwards from the horizontal arm 221, multiple horizontal arms 221 inBeing set in the horizontal part 211 in two rows, multiple vertical arm 222 are set in fore-and-aft direction in two rows, further, onThe vertical arm 222 that the bending extension of the horizontal arm 221 of row is formed is located at heel row and is immobilizated in second fixed block2122, the vertical arm 222 that the horizontal arm 221 of lower row is bent to form is positioned at front-seat and be immobilizated in described firstFixed block 2121.The lateral margin of the horizontal arm 221 of each ground terminal 201 extends laterally to form one first extension 2211,First extension 2211 is revealed in the horizontal part 211, the vertical arm of the ground terminal 201 of each upper row222 lateral margin extends to form one second extension 2221, and second extension 2221 is revealed in second fixed block 2122.
As shown in Figure 4 and Figure 5, the metal-back 23 coats the horizontal part 211, to isolate the high frequency of horizontal arm 221The leakage of signal；Further, the metal-back 23 extends through corresponding four shapes of groove 2111 of its upper and lower surfaceInto four through holes 231, extension is tilted down forward from the back edge of each through hole 231 and forms a fixed part 232, four institutesState fixed part 232 to correspond in four through holes 231 respectively and abut the horizontal part 211 simultaneously, make the metal-back23 are stably fixed on the insulating body 21.
As shown in Fig. 4, Fig. 5 and Fig. 7, the ground strip 24 is stamped and formed out by a metallic plate, and each ground strip 24 passes throughWear its surface and open up an opening 243, bending extension respectively from the opposite sides of the opening 243 forms a clasp arm 242, describedClasp arm 242 enters the groove 2111 through the through hole 231, the ground strip 24 is locked in the insulating body21；Specifically, in the present embodiment, the opposite sides of the clasp arm 242 protrudes out to form a convex portion 2421, the convex portion respectively2421 with the inwall of the groove 2111 extruding interference engagement, to realize the lock of the ground strip 24 and the insulating body 21Button；In other embodiments, the locking mode of the clasp arm 242 and the groove 2111 is not construed as limiting, as long as the two canStable locking.Further, the plate edge bending extension of each ground strip 24 forms two elastic arms 241, each describedElastic arm 241 is corresponding to abut first extension 2211 through a through hole 231, to realize the ground strip 24With the conducting of the ground terminal 201.Preferably, the plate face of the clasp arm 242 perpendicular to the elastic arm 241 plate edge,Be advantageous to the overall structure stability of the stress of ground strip 24；In in the same through hole 231, the fixed part 232 is located atBetween the elastic arm 241 and the clasp arm 242, increase the stress balance of integrated model.In the present embodiment, positioned at describedA crossbeam 244 of the ground strip 24 of the lower section of metal-back 23 provided with 243 other opposite sides sides of the connection opening, twoThe clasp arm 242 is located at the opposite sides of crossbeam 244 respectively, adds the structural strength of the ground strip 24.Certainly, existIn other embodiments, upper and lower two ground strips 24 can all be provided with the crossbeam 244, not be limited herein.
As shown in Fig. 4, Fig. 6 and Fig. 7, the shielding case 25 has an antetheca 254, prolongs from the opposite sides of antetheca 254The two side 255 to be formed is stretched, and two rear walls 256 are extended rearwardly to form from two edges of side wall 255, by the antetheca254th, two 255 and two rear walls 256 of side wall coat first fixed block 2121 and second fixed block jointly2122, and then make the electromagnetic interference of the maskable vertical arm 222 of the shielding case 25.Further, the plate face of the antetheca 254Blanking is molded two the first shell fragments 252, and the lower edge of each rear wall 256 bends extension and forms one second shell fragment separately down253, two first shell fragments 252 abut the vertical arm 222 of two ground terminals 201 of lower row respectively backward,Two second shell fragments 253 respectively forwardly abut two second extensions 2221, with this realize the shielding case 25 withThe contact conducting of each ground terminal 201, improves the shielding case 25 and isolates the high frequency signal transmission of vertical arm 222The ability of electromagnetic interference.
The top edge of the antetheca 254, which upwardly extends, is bent to form two abutment arms 251, while abuts and paste the metalThe ground strip 24 of the lower surface of shell 23, the shielding case 25 is set to be connected with the ground strip 24；It is arranged such, just makes the screenShell 25, the ground strip 24 and the metal-back 23 is covered to form around the horizontal arm 221 and the vertical arm 222 completelyEarth-return circuit, and this earth-return circuit realizes multipoint earthing by each ground terminal 201.Further, two institutesAbutment arms 251 are stated to be located between two elastic arms 241 for amplexiforming ground strip 24 described in the lower surface of metal-back 23；It is describedAbutment arms 251 include a horizontally disposed connecting portion 2511, and first bending tilts extension again downwards from the connecting portion 2511The abutting part 2512 that horizontal forward extension is formed, the abutting part 2512 abut positioned at described in the lower section of metal-back 23 upwardsThe lower surface of ground strip 24；Preferably, the connecting portion 2511 is higher than the lower surface of the metal-back 23, increases the abuttingThe upward elastic force in portion 2512, the abutting power that the abutment arms 251 abut the ground strip 24 is improved, ensure that the shielding case25th, the stability for the earth-return circuit that metal-back 23 and the ground strip 24 three is formed.
As shown in Figure 2 and Figure 6, the first shielding piece 26 is immobilizated in the horizontal part 211 and is located at two rows instituteBetween stating horizontal arm 221, the secondary shielding piece 27 is immobilizated in first fixed block 2121 and second fixed block 2122Between and between vertical arm 222 described in front two rows, and the secondary shielding piece 27 bend forward extension formed two connectContact arm 271, contact the first shielding piece 26, the shielding isolation for strengthening the first shielding piece 26 and institute's secondary shielding piece 27 are madeWith.
In summary, electric connector of the present invention has following beneficial effect：
（1）The metal-back 23 coats the horizontal part 211, and the ground strip 24 covers the surface of metal-back 23, the bulletProperty arm 241 enter in the metal-back 23 horizontal arm 221 for abutting the ground terminal 201, the screen through the through hole 231Cover shell 25 and coat the vertical arm 222, the abutment arms 251 abut the ground strip 24, so make the metal-back 23, describedGround strip 24 and the shielding case 25 form completely around the horizontal arm 221 of the terminal 22 and the vertical arm 222Earth-return circuit, and this earth-return circuit is grounded connection by the ground terminal 201, reduces first electric connector 2Electromagnetic interference when transmitting high-frequency signal, the fidelity factor of the high frequency signal transmission of the first electric connector 2 is improved, adapted toThe demand of the current high frequency signal transmission of first electric connector 2.
（2）The plate face blanking of the antetheca 254 is molded two the first shell fragments 252, the lower edge difference of each rear wall 256Bending extension downwards forms one second shell fragment 253, and two first shell fragments 252 abut respectively backward to be connect described in two of lower rowThe vertical arm 222 of ground terminal 201, two second shell fragments 253 respectively forwardly abut two second extensions2221, with this realize the shielding case 25 contact with each ground terminal 201 turn on, improve the shielding case 25 everyFrom the ability of the high frequency signal transmission electromagnetic interference of vertical arm 222.
（3）The abutment arms 251 include a horizontally disposed connecting portion 2511, and first downward from the connecting portion 2511Bending tilts the extension abutting part 2512 that horizontal forward extension is formed again, and the abutting part 2512 abuts the ground strip upwards24 lower surface；The connecting portion 2511 is higher than the lower surface of the metal-back 23, and it is upward to increase the abutting part 2512Elastic force, the abutting power that the abutment arms 251 abut the ground strip 24 is improved, ensure that the shielding case 25, the metalThe stability for the earth-return circuit that shell 23 and the three of the ground strip 24 are formed.
(4) plate face of the clasp arm 242 is perpendicular to the plate edge of the elastic arm 241, be advantageous to the ground strip 24 byThe overall structure stability of power.
Detailed description above is only the explanation of the preferred embodiments of the invention, non-therefore the limitation present invention the scope of the claims,So all, with this creation specification and diagramatic content institute, equivalence techniques changes for it, is both contained in the scope of the claims of this creationIt is interior.