CN2415480Y - Electric connector terminal - Google Patents

Abstract

The utility model relates to an electric connector terminal, comprising a welding part, a holding part and a suspending arm, wherein, the welding part is stuck on a contact pad of the circuit board via a surface binding technique, the holding part is held in the insulating body, and the suspending arm upwards extends with incline out of one end of the welding part. An end of the suspending arm is provided with a contact part so as to be contacted with a contact pads of a wafer die set, at least a bulge part is longitudinally and outwards extended from the welding part or laterally and outwards extended from both sides of the welding part, and the bulge part is buckled in a groove of the corresponding insulating body. So the torque moment of the terminal can be balanced, and the terminal can be prevented from being stripped from the contact pads, and therefore, the stability of telecommunication transmission can be assured.

Description

Electric connector terminal

The utility model relates to a kind of electric connector terminal, refers to that especially a kind of being used for is connected to pad grid array (Land Grid Package, LGP) type electric connector terminal on the circuit board with the wafer module.

Development with computer industry, CPU (Central Processing Unit, CPU), the structure of assembly such as wafer module and electric connector itself becomes increasingly complex, its function also from strength to strength, so it is also more and more higher to interconnective accuracy of each assembly and reliability requirement.Needs for coupling central processing unit, wafer module and circuit board performance, the electric connector terminal that docks with it mostly is highdensity array telecommunication terminal, thereby, the connected mode grid type array tin ball bonding of industry-wide adoption at present connect (Ball Grid Array, BGA).But existing electric connector adopts the BGA mode that central processing unit, wafer module and circuit board is bonding, and its cost is higher, production inconvenience, and it is bigger to make electric connector take volume owing to the welding and assembling height of electric connector is higher.Therefore, industry introduce again pad grid array type (Land Grid Package, wafer module packaged type LGP), relevant prior art such as United States Patent (USP) the 4th, 553,192,5,395, No. 252 disclose.See also shown in Figure 10, integrated circuit module 17 has contact mat 20 in lower surface, circuit board 15 has contact mat 37 in upper surface, terminal 14 roughly takes the shape of the letter U, it comprises a upper arm 26 and a underarm 27, be bent into a weld part 28 from underarm 27 ends and be adhered to the surface adhering technology on the contact mat 37 of circuit board 15, telecommunication contacts the contact mat 20 of wafer module 17 by contact site 32 with upper arm 26.

But, because terminal 14 only is adhered on the contact mat 37 on the circuit board 15 with the surface adhering technology, this Welding Structure intensity is little, and central processing unit also can reduce Welding Structure intensity because of the high temperature that work produces, press down owing to terminal upper arm 26 subject wafer modules 17 again and insulating body (not shown) the subject wafer module 17 of connector presses down and moves down, make terminal 14 on the contact mat 37 of circuit board 15, be subjected to anticlockwise torque, therefore, weld part 28 very easily the contact mat 37 from the circuit board 15 peel off.Moreover, the insulating body of connector (not shown) subject wafer module 17 presses down also and can move down, thereby cause terminal 14 distortion crooked, make the contact force of 20 of the contact mats of its contact point 32 and wafer module 17 produce variation, and then cause wafer module 17 and terminal 14 loose contacts, make the stability of telecommunication transmission can not get ensureing, even produce dislocation at contact point 32 and 20 of contact mats, and cause wafer module 17 and 15 formation of circuit board to open circuit, cause the inefficacy of system.

The purpose of this utility model is to provide a kind of the wafer module is connected to electric connector terminal on the circuit board, this terminal has can prevent that terminal is owing to the uneven structure of rotating of torque, can the balanced terminals torque and can prevent that the terminal weld part from peeling off from contact mat by this, thus the stability of telecommunication transmission ensured.

The purpose of this utility model is achieved in that described electric connector terminal can be contained in the terminal containing slot of insulating body of electric connector, it comprises weld part, cantilever, wherein weld part is used to be connected a circuit unit, cantilever extends from weld part one end, cantilever one end is provided with a contact site, it is characterized in that: conducting terminal also comprises protuberance, and this protuberance outwards protrudes suitable length from weld part peripheral position place, and can be placed in the corresponding position of aforementioned dielectric body.

Compared with prior art, advantage of the present utility model is: by the effect of protuberance, thereby the bonding area that not only can increase weld part strengthens Welding Structure intensity, and can balance put on the torque of weld part, prevent that weld part from peeling off from the contact mat of circuit board, and then can prevent that cantilever is crooked because of the distortion that the weld part distortion is caused, and then guarantee the consistency of contact force, and can make the contact mat of termination contact portion and wafer module can not produce dislocation, ensure the stability of telecommunication transmission.

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 is the stereogram of the utility model electric connector terminal first embodiment.

Fig. 2 is the vertical view of the pairing insulating body of the utility model first embodiment terminal.

Fig. 3 is the cutaway view of Fig. 2 along II-II line direction.

Fig. 4 is the combination schematic diagram that the first embodiment terminal is used in wafer module and circuit board.

Fig. 5 is the stereogram of the utility model electric connector terminal second embodiment.

Fig. 6 is the vertical view of the pairing insulating body of the utility model second embodiment terminal.

Fig. 7 is the cutaway view of Fig. 6 along VII-VII line direction.

Fig. 8 is the cutaway view of Fig. 6 along VIII-VIII line direction.

Fig. 9 is the combination schematic diagram that the second embodiment terminal is used in wafer module and circuit board.

Figure 10 is the combination schematic diagram that existing electric connector terminal is used in wafer module and circuit board.

See also first embodiment of Fig. 1 for the utility model electric connector terminal, terminal 1 is approximately a V-type elastic construction, it comprises a weld part 10, this weld part 10 is with surface adhering technology (SurfaceMounted Technology, SMT) be adhered on the contact mat 900 (Fig. 4) of circuit board 800, weld part 10 1 ends are extended with the extension 23 of a level obliquely, and extension 23 terminal both sides vertically are provided with holding parts 25 with in the groove 310 (Fig. 2) that is retained on insulating body 3.Bend obliquely from weld part 10 other ends and to extend a cantilever 21, cantilever 21 terminal bendings are provided with a contact site 22 to contact with the contact mat 430 (Fig. 4) of wafer module 550, be in cantilever 21 both sides from weld part 10 with cantilever 21 boundaries and vertically outwards convex with protuberance 50, these protuberance 50 holdings are in the draw-in groove 350 (Fig. 4) of the matrix 400 of corresponding insulating body 3.

See also Fig. 2 and Fig. 3, it is the insulating body 3 of the utility model electric connector terminal first embodiment institute relative set, insulating body 3 comprises the matrix 400 of an about rectangular body and runs through several terminal containing slots 300 of matrix 400, described terminal containing slot 300 distribute as net shape on matrix 400 and with the corresponding distribution of contact mat 430 (Fig. 4) of wafer module 550 so that contact mat 430 contacts with contact site 22 telecommunications of terminal 1.Each terminal containing slot 300 approximately is longitudinal fluting, it is provided with the first side wall 380 and second sidewall 330, offer a groove 310 in the first side wall 380 and second sidewall, 330 interfaces places to terminal containing slot 300 both sides, with the holding parts 25 that is installed with terminal 1, and convex with draw-in groove 350 near matrix 400 basal surfaces 24 longitudinally along terminal containing slot 300 in matrix 400 at the opposite side of second sidewall 330, with the protuberance 50 that is installed with terminal 1.

Continuous second embodiment that sees also Fig. 5 for the utility model electric connector terminal, itself and the aforementioned first embodiment difference are: terminal 2 laterally outwards convexes with the protuberance 60 that has same purpose and effect with the protuberance 50 of aforementioned terminal 1 from weld part 100 both sides, and these protuberance 60 holdings are in the draw-in groove 460 (Fig. 7) of the matrix 40 of corresponding insulating body 4.

See also Fig. 6 to Fig. 8, it is the insulating body 4 of 2 relative set of the utility model second embodiment terminal, its with aforementioned dielectric body 3 differences be draw-in groove that the position is set is different; Each terminal containing slot 30 approximately is longitudinal fluting, it is provided with the first side wall 38 and second sidewall 33, a pair of holding division 46 protrudes out to terminal containing slot 30 inside in the first side wall 38 places, in the first side wall 38 of the following direction terminal containing slot 30 of holding division 46, respectively convex with a draw-in groove 460, to be used to accommodate the protuberance 60 (Fig. 9) of terminal 2 along horizontal direction.

By protuberance 50,60 effect, not only can increase weld part 10, thereby 100 bonding area strengthens Welding Structure intensity, and because protuberance 50,60 holdings are at insulating body 3,4 corresponding draw-in groove 350, in 460, so produce one with terminal 1, the opposing torque that 2 rotation trend is opposite, thereby balance puts on weld part 10,100 torque, prevent weld part 10,100 peel off from the contact mat of circuit board, and can prevent cantilever 21,210 because of weld part 10, the distortion that 100 distortion are caused is crooked, and then guarantee the consistency of contact force, further can make terminal 1,2 contact sites 22,220 with wafer module 55,550 contact mat 43,430 can not produce dislocation, ensure the stability of telecommunication transmission.

Claims (4)

1. an electric connector terminal comprises weld part, cantilever, and wherein weld part is used for being connected with circuit board; Cantilever extends from the weld part other end, cantilever one end is provided with a contact site, it is characterized in that: electric connector terminal also comprises protuberance, and this protuberance outwards protrudes suitable length from weld part peripheral position place, and can be placed in the corresponding position of the insulating body of electric connector.

2. electric connector terminal according to claim 1 is characterized in that: terminal comprises further that also being located at being used on the extension is retained on holding parts in the insulating body with terminal.

3. electric connector terminal according to claim 1 and 2 is characterized in that: protuberance vertically outwards protrudes from weld part.

4. electric connector terminal according to claim 1 and 2 is characterized in that: protuberance laterally outwards protrudes from the weld part both sides.

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