CN1155141C

CN1155141C - Production of electric connector

Info

Publication number: CN1155141C
Application number: CNB001149318A
Authority: CN
Inventors: 王卓民; 林南宏; 游星宇
Original assignee: Foxconn Kunshan Computer Connector Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Foxconn Kunshan Computer Connector Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2000-03-16
Filing date: 2000-03-16
Publication date: 2004-06-23
Anticipated expiration: 2020-03-16
Also published as: CN1314732A

Abstract

The present invention relates to a making method of an electric connector, which comprises the steps of providing terminals and an insulating body, wherein each terminal is provided with a welding part, a hanging arm and a bulged part; the welding part is connected with a circuit board and extended with an extending part, the hanging arm extends from the other end of the welding part, and one end of the hanging arm is provided with a contact part; the insulating body is provided with a structure correspondingly containing the terminals. The present invention is characterized in that the bulged part outwards bulges a proper length from the circumferential position of the welding part, the bulged part of each terminal is placed in the corresponding position of the insulating body, and the stability of telecommunication transmission can be ensured by the welding part which can balance terminal torque and prevent the welding part of each terminal from being stripped from a contact pad.

Description

Electric connector

The invention provides a kind of electric connector making method, relate in particular to a kind of pad grid array (Land Grid Package, LGP) type electric connector making method.

Development with computer industry, CPU (Central Processing Unit, CPU), the structure of assembly such as chip 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.Be the needs of coupling central processing unit, chip module and circuit board performance, the electric connector terminal that docks with it mostly is highdensity array telecommunication terminal.Thereby, the connected mode of industry-wide adoption at present be the ball bonding of grid type array tin connect (Ball Grid Array, BGA).But existing electric connector higher, the production inconvenience of cost that central processing unit, chip module and circuit board is bonding of adopting the BGA mode, 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, chip 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 modules 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, from underarm 27 ends be bent into a weld part 28 with surface adhering on the contact mat 37 of circuit board 15, telecommunication contacts the contact mat 20 of chip module 17 by contact site 32 with upper arm 26.

But, since terminal 14 only with surface adhering on the contact mat on the circuit board 15 37, this Welding Structure intensity is little, and central processing unit also can reduce Welding Structure intensity because of the high temperature that work produces, pressed down by chip module 17 owing to terminal upper arm 26 again and the insulating body (not shown) of connector is pressed down by chip module 17 to move 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.Again, the insulating body of connector (not shown) is also pressed down by chip module 17 to move down, thereby cause terminal 14 distortion crooked, make the contact force of 20 of the contact mats of its contact point 32 and chip module 17 produce variation, and then cause chip 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

chip module

17 and 15 formation of circuit board to open circuit, cause the inefficacy of system.

The object of the present invention is to provide a kind of pad grid array type electric connector making method, implement this method and can prevent that terminal from rotating owing to torque is uneven, but by this balanced terminals torque and can prevent that the terminal weld part from peeling off from contact mat, thereby ensure the stability of telecommunication transmission.

The object of the present invention is achieved like this: electric connector making method comprise make respectively connector terminals and with the insulating body of terminal relative set, wherein terminal is provided with weld part, holding parts and cantilever, this weld part is adhered on the contact mat of circuit board with the surface adhering technology, holding parts is immobilizated in the insulating body, cantilever extends obliquely from weld part one end, cantilevered distal end is provided with a contact site to contact with the contact mat of chip module, it is characterized in that: when making connector terminals, vertically laterally outwards protrude at least one protuberance outwards or from the weld part both sides from the weld part of terminal, again when making insulating body, in insulating body corresponding aforementioned protuberance position offer can ccontaining terminal protuberance draw-in groove, and the terminal protuberance is placed in the draw-in groove of insulating body of relative set.

Compared with prior art, the invention has the advantages that: implement the inventive method and the electric connector made, effect by its protuberance, thereby the bonding area that not only can increase weld part strengthens Welding Structure intensity, but balance puts on the weld part that prevents of weld part and peels 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 chip module can not produce dislocation, ensure the stability of telecommunication transmission.

The present invention is further illustrated below in conjunction with drawings and Examples.

Fig. 1 is the terminal stereogram of electric connector first embodiment that implemented by the inventive method.

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

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

Fig. 4 is the combination schematic diagram that electric connector first embodiment is used in chip module and circuit board.

Fig. 5 is the terminal stereogram of second embodiment that implemented by the inventive method.

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

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

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

Fig. 9 is the combination schematic diagram that the second embodiment electric connector is used in chip module and circuit board.

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

See also Fig. 1, it is the terminal of electric connector first embodiment that implemented by the inventive method, at first needs according to practice and factor such as design specification is made terminal 1.Terminal 1 is a V-type elastic construction approximately slightly, it is provided with a weld part 10, this weld part 10 is with surface adhering technology (Surface MountedTechnology, 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 immobilizated in 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 chip module 550, having a common boundary from weld part 10 and cantilever 21 is in cantilever 21 both sides and vertically outwards convexes with protuberance 50, and this protuberance 50 is placed in the draw-in groove 350 (Fig. 4) of matrix 400 of corresponding insulating body 3.

See also Fig. 2 and Fig. 3, it after making terminal 1 by the inventive method, then makes the insulating body 3 with terminal 1 relative set for the insulating body 3 of the electric connector first embodiment terminal institute relative set implemented by the inventive method.Insulating body 3 is provided with the matrix 400 of a rough 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 chip module 550 so that contact mat 430 contacts with contact site 22 telecommunications of terminal 1.Each terminal containing slot 300 rough longitudinal fluting that are, 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 in the opposite side of second sidewall 330, with the protuberance 50 that is installed with terminal 1.

The continuous terminal that sees also Fig. 5 for electric connector second embodiment that implements by the inventive method, 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 this protuberance 60 is placed in the draw-in groove 460 (Fig. 7) of 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 electric connector second embodiment terminal of being implemented by the inventive method, its with aforementioned dielectric body 3 differences be draw-in groove that the position is set is different: each terminal containing slot 30 rough longitudinal fluting that are, it is provided with the first routine 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 are placed in 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 chip module 55,550 contact mat 43,430 can not produce dislocation, ensure the stability of telecommunication transmission.

Claims

1. electric connector, it comprises the insulating body with terminal containing slot and is contained in conducting terminal in the terminal containing slot, this terminal has weld part and cantilever, cantilever extends from weld part, cantilever one end is provided with a contact site, terminal also comprises the extension that extends from weld part, it is characterized in that: outwards protrude the protuberance of suitable length on the terminal from weld part peripheral position place, this protuberance is placed in the correspondence position of insulating body.

2. electric connector according to claim 1 is characterized in that: insulating body is the matrix of slightly rectangular body, and terminal containing slot distributes as net shape.

3. electric connector according to claim 1 is characterized in that:, extension is provided with the holding parts of fixing terminal in the terminal containing slot of insulating body.

4. electric connector according to claim 2, it is characterized in that: have the first side wall and second sidewall in the terminal containing slot, the groove of the holding parts of accommodating conducting terminal is set to the terminal containing slot both sides at the first side wall and the second sidewall interfaces place, near basal surface longitudinally along matrix in matrix of matrix draw-in groove is set at the opposite side of second sidewall.

5. electric connector according to claim 2, it is characterized in that: terminal containing slot has the first side wall and second sidewall, the groove of the holding parts of accommodating conducting terminal is set to the terminal containing slot both sides at the first side wall and the second sidewall interfaces place, offers draw-in groove near basal surface horizontal direction along matrix in matrix of matrix at the opposite side of second sidewall.

6. electric connector according to claim 4 is characterized in that: the protuberance of terminal vertically outwards protrudes from weld part, and is placed in the draw-in groove of corresponding insulating body.

7. electric connector according to claim 5 is characterized in that: the protuberance of terminal laterally outwards protrudes from the weld part both sides, and is placed in the draw-in groove of corresponding insulating body.