[background technology]
Electric connector is widely used in (as mobile phone, PC, PDA etc.) in the various electronic equipments, along with development of science and technology, people are also more and more higher to the requirement of these electronic equipments, as in mobile phone, increasing camera function, correspondingly, electronic component is electrically connected to the also increase year by year of demand of the electric connector of circuit board.
See also shown in Figure 1, be a kind of electric connector 100 ' relevant with the utility model electric connector, it comprises the metal shell 30 ' that is provided with receiving space 33 ', the insulating body 10 ' that is assembled in metal shell 30 ' two opposite side walls 32 ', with the combined plurality of conductive terminals 20 ' of insulating body 10 ', and be overlying on shielding casing 40 ' on the insulating body 10 '.Wherein insulating body 10 ' is L-shaped, comprise horizontal part 12 ' that along continuous straight runs extends and the vertical portion 11 ' of vertically extending, described vertical portion 11 ' is gone up and is provided with first through hole 111 ' and second through hole 112 ' that runs through insulating body 10 ' in thickness direction, metal shell 30 ' and shielding casing 40 ' respectively at above-mentioned first through hole 111 ' and second through hole, 112 ' correspondence position be provided with hangnail 322 ' ' with protruding thorn 43 ', during assembling, at first conducting terminal 20 ' is assembled in the insulating body 10 ', to place on the metal shell 30 ' two opposite side walls 32 ' with the insulating body 10 ' that conducting terminal 20 ' fits together then, and make hangnail 322 ' on the metal shell 3 ' place first through hole 111 ' of insulating body 10 ', at last shielding casing 40 ' is placed on the insulating body 10 ', its protruding thorn 43 ' is matched with second through hole 112 ' of insulating body 10 '.
Yet, there is following shortcoming at least in above-mentioned electric connector 100 ': because insulating body 10 ' is to reach by hangnail 322 ' and cooperating of first through hole 111 ' with the fixing of metal shell 30 ', and the part of this electric connector 100 ' is more, so, this electric connector 100 ' in use, be easy to become flexible between each part, and then influence the electrical performance of electric connector.
In view of above drawback, be necessary to provide a kind of electric connector of improvement in fact, with defective and the deficiency that overcomes above-mentioned electric connector.
[utility model content]
The purpose of this utility model is to provide a kind of firm assembling and electric connector simple in structure.
The purpose of this utility model is achieved through the following technical solutions: a kind of electric connector, comprise: metal shell, the plurality of conductive terminals that places insulating body on the metal shell two opposite side walls respectively, assembles mutually with insulating body, and be overlying on shielding casing on the insulating body.Wherein insulating body is provided with projection, and metal shell is provided with the hangnail that holds above-mentioned projection.
The electric connector relevant with the utility model electric connector compared, the utility model electric connector has following beneficial effect: because insulating body is provided with projection, and metal shell is provided with the hangnail that holds above-mentioned projection, so, this electric connector is in use, insulating body and metal shell are difficult for loosening, thereby have improved the electrical performance of whole electric connector.
[execution mode]
Describe the embodiment of the utility model electric connector 1 in detail below in conjunction with accompanying drawing.
See also Fig. 2 to shown in Figure 4, the utility model electric connector 1, be used to electrically connect electronic component (not shown) to circuit board (not shown), comprise metal shell 10, be assembled in the insulating body 20 of metal shell 10 two opposite side walls, the plurality of conductive terminals 30 of assembling mutually with insulating body 20 and be overlying on shielding casing 40 on the insulating body 20.
Metal shell 10, be to form by the metallic plate pressing and bending, whole rectangular, comprise the first side wall 100 that is oppositely arranged, perpendicular to the first side wall 100 and with second sidewall 102 of the first side wall 100 adjacent settings, and the receiving space 104 that forms by the above-mentioned the first side wall 100 and second sidewall 102.Electronic component just is contained in this receiving space 104, wherein the first side wall 100 is provided with the shell fragment 1 002 that extends to receiving space 104, second sidewall 102 is provided with breach 1022 symmetrically, these breach 1022 relative inner are provided with hangnail 1024, to hold and to hold insulating body 20, be equipped with slit 106 between metal shell 10 every two adjacent sidewalls, elasticity with reinforcement metal housing 10, the two side ends of second sidewall 102 also is provided with the holding section 1028 of extending towards receiving space 104 directions, this holding section 1028 roughly is vertical setting with second sidewall, 102 surfaces, and these holding section 1028 terminal vertical bendings are with fixing insulating body 20 and shielding casing 40, after insulating body 20 and shielding casing 40 are assembled on the metal shell 10 successively, this holding section 1028 is fastened in the two ends of insulating body 20 and shielding casing 40, to strengthen the compactness between itself and the metal shell 10, in addition, the first side wall 100 is respectively equipped with bonding pad 1004 vertical with sidewall surfaces and that along continuous straight runs extends with second sidewall 102,1026, after this electric connector 1 assembles, can pass through these bonding pads 1004,1026 are welded on the circuit board.
Insulating body 20 is the lengthwise shape, is made by insulating material, place metal shell 10 second sidewalls 102, and being provided with a pair of projection 202 in metal shell 10 second sidewalls 102 breach 1022 correspondence positions, each projection 202 is provided with opening 204 in upper-lower position, cooperates to hold with shielding casing 40.
Conducting terminal 30, comprise and place in the insulating body 20 and the vertical portion of vertically extending (not indicating), respectively from the two ends of vertical portion to the weld part 302 and the contact site 304 that extend away from the direction of vertical portion, wherein weld part 302 roughly at right angles is provided with the vertical portion, and be positioned at same horizontal plane with the bonding pad 1026 on the metal shell 10, contact site 304 is then in a certain angle with the vertical portion, and under the effect of electronic component, in vertical direction generation strain.
Shielding casing 40, be overlying on the insulating body 20, roughly L-shaped, comprise horizontal part 402 that along continuous straight runs extends and the vertical component effect 404 vertical with above-mentioned horizontal part 402, wherein horizontal part 402 comprises from terminal extension with pad 4024 that is connected with circuit board and second holding piece 4022 that extends to the receiving space 104 of metal shell 10 from horizontal part 402 two ends, vertical component effect 404 comprises protruding thorn 4044 corresponding with insulating body 20 openings 204 and first holding piece 4042 that extends to metal shell 10 receiving spaces 104 from the vertical component effect 404 and the junction of horizontal part 402, wherein shell fragment 1002 actings in conjunction on first holding piece 4042 and second holding piece 4022 and the metal shell 10, with the fixing electronic component in the receiving space 104 of metal shell 10.
Introduce the assembling process of the utility model electric connector 1 below: at first conducting terminal 30 and insulating body 20 are fitted together, next, above-mentioned insulating body 20 is placed on second sidewall 102 of metal shell 10, and the projection 202 that makes insulating body 20 is fastened in the breach 1 022 on metal shell 10 second sidewalls 102, and the hangnail 1024 clamping projections 202 by breach 1022 places, then shielding casing 40 is overlying on the insulating body 20, a pair of protruding thorn 4044 on its vertical component effect 404 is inserted into respectively in the opening 204 of insulating body 20, at last, electronic component is placed metal shell 10, and by the shell fragment 1002 on the metal shell 10 and the holding piece fixing on the shielding casing 40 its in metal shell 10.So far, whole electric connector 1 assembling finishes, at last by the bonding pad 1004,1026 on the metal shell 10, the weld part 302 of conducting terminal 30, and the pad 4024 of shielding casing 40 is welded in this electric connector 1 on the circuit board, thereby electrically connects electronic component to circuit board.
Please consult shown in Figure 2 by emphasis, wherein insulating body 20 is provided with a pair of projection 202, and metal shell 10 is provided with breach 1022 in above-mentioned projection 202 correspondence positions, and these breach 1022 relative inner are provided with the hangnail 1024 that holds projection 202, thereby, insulating body 20 firmly places metal shell 10, is difficult for loosening.
The above only is a kind of execution mode of the present utility model, it or not whole or unique execution mode, the variation of any equivalence that those of ordinary skills take technical solutions of the utility model by reading the utility model specification is claim of the present utility model and contains.