CN100524974C - Solder planting method for electric connector - Google Patents
Solder planting method for electric connector Download PDFInfo
- Publication number
- CN100524974C CN100524974C CNB031331769A CN03133176A CN100524974C CN 100524974 C CN100524974 C CN 100524974C CN B031331769 A CNB031331769 A CN B031331769A CN 03133176 A CN03133176 A CN 03133176A CN 100524974 C CN100524974 C CN 100524974C
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- scolder
- tray
- electric connector
- insulating body
- conducting terminal
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Abstract
The invention is a solder grafting method applied to electric connector, applied to an electric connector containing an insulating main body and plural conductive terminals held in the insulating main body, and the method is firstly mounting plural conductive terminals in the insulating main body, making the welded ends of conductive terminals all raised out of a side surface of the insulating main body, and preparing a bearing disc, positioning plural solders on the surface of the bearing disc, successively contacting the welded ends of the conductive terminals with the corresponding solders, heating to soften the solders and then piercing the welded ends into the solders because of deadweight of the electric connector, and after cooled, the solders are able to coat the welded ends to form fixed connection so as to strengthen the fixedness of solders grafted with the welded ends.
Description
Technical field
The invention relates to that a kind of scolder that is applied to electric connector plants the method for connecing, be meant that especially a kind of one of conducting terminal of being installed in electric connector end that makes connects method just like the scolder of tin ball accordingly.
Background technology
Known to central processing unit integrated circuit (IC) chip such as (CPU) (or be called " integrated circuit wafer "), because processing speed and function have the development trend of becoming stronger day by day, therefore chip (or be called " wafer ") externally carries out signal to export the electrical contact of (I/O) will be more and more many, it is compact that yet its volume after being encapsulated but requires, event has been adopted PGA (Pin Grid Array) all as the encapsulation of the integrated circuit (IC) chip of central processing unit equal altitudes densification design, BGA (Ball Grid Array), even LGA packaged types such as (Land Grid Array), but no matter which kind of packaged type is integrated circuit (IC) chip adopt, all must utilize an electric connector and a circuit board to electrically connect, therefore, in order to make electric connector cooperate the packaged type of integrated circuit (IC) chip, and steadiness and the processing procedure efficient of considering mutual electric connection between electric connector and circuit board, so generally one of each conducting terminal is held the tin ball that connects a correspondence in electric connector, utilizing surface adhering method (SMT) that electric connector is welded in way on the circuit board again, is to electrically connect the method for making of often using for producing between electric connector and circuit board now.
As Fig. 1, be that expression one electrically connects by an electric connector 8 and a circuit board 9 with the central processing unit 7 that the PGA mode encapsulates, wherein, central processing unit 7 is forming plural number uniformly-spaced distance arrangement and the downward pin 71 that protrudes in the certain area in its bottom surface after the encapsulation, electric connector 8 then includes an insulating body 81 and plural corresponding pin 71 positions and runs through the containing hole 82 of insulating body 81 upper and lower surfaces, each containing hole 82 all can be accommodated a conducting terminal 83, on circuit board 9, then design the electrical contact 91 that corresponding conducting terminal 83 positions are arranged in addition in advance, electrically contact the corresponding pin 71 of central processing unit 7 by the upper end that is contained in the conducting terminal 83 in the insulating body 81, the lower end then connects the electrical contact 91 that is positioned on the circuit board 9 accordingly, makes that central processing unit 7 is able to electrically connect to transmit electric signal with circuit board 9.
As Fig. 2, brought forward is described, for the lower end that makes conducting terminal 83 can utilize the surface adhering method to link to each other with 9 of circuit boards, the lower end of conducting terminal 83 must connect a tin ball 84 earlier, make the tin ball 84 that is attached to conducting terminal 83 lower ends after contact circuit plate 9, carry out reflow (Reflow), can electrically connect conducting terminal 83 and circuit board 9 by mat tin ball 84.But how exactly tin ball 84 to be attached in advance conducting terminal 83 lower ends, must to solve many problems on the practice of processing procedure, one of them is the location of tin ball 84.And as shown in the figure, the lower end of conducting terminal 83 is a lower surface 812 a bit of distances that protrude from insulating body 81 in upright mode, the lower end of conducting terminal 83 is linked to each other with tin ball 84 spherical in shape without exception, but with regard on the practice, because the lower surface 812 of insulating body 81 is a plane, and tin ball 84 is spherical, do not have any detent mechanism between the two and very easily change relative position, though to connect a tin ball 84 feasible in theory so desire to plant in the lower end of conducting terminal 83 according to this kind structure, then suitable difficulty on actual processing procedure.
As Fig. 3, be in order to improve wherein a kind of way of Fig. 2 tin ball 84 and conducting terminal 83 mutual location difficulty, it mainly is the lower surface 811 formation one corresponding mating surface 813 that communicates with containing hole 82 and inwardly be the spherical arc shape recess at insulating body 81, conducting terminal 83 lower ends then form a carrier 831 of fitting with mating surface 813, make mating surface 813 and carrier 831 formations one and tin ball 84 surperficial contacted recesses, with location tin ball 84, and tin ball 84 also can electrically contact with the carrier 831 of conducting terminal 83 by recess.And only be wherein a kind of way for example at this, insulating body 81 or conducting terminal 83 also can adopt other kind kenel certainly wherein, but basic spirit is, can interfere the mechanism of location by the insulating body 81 or the change of conducting terminal 83 ends with 84 generations of tin ball to constitute one.
As Fig. 4, in response to insulating body 81 and conducting terminal 83 are located the change of being done for tin ball 84 as shown in Figure 3, when carry out tin ball 84 plant the ball processing procedure time, common way is after conducting terminal 83 is assembled in insulating body 81, the lower surface 812 of insulating body 81 is overturn up, causing conducting terminal 83 preparation one of to be connected with tin ball 84 simultaneously holds also up, utilize a spacer 85 to be covered in lower surface 812 tops of insulating body 81 again, and spacer 85 is provided with plural corresponding conducting terminal 83 positions and can hold the perforation 851 that tin ball 84 passes through, the carrier 831 that makes conducting terminal 83 851 reveals because of boring a hole, number is moved around on spacer 85 far more than the tin ball 84 of perforation 851 numbers, making tin ball 84 can utilize gravity to fall in the perforation 851 naturally contacts with conducting terminal 83, again unnecessary tin ball 84 is made by oneself on the bit slice 85 and removed, perhaps utilizing alternate manner that tin ball 84 is inserted in the perforation 851 one by one makes it contact with conducting terminal 83, the step of carrying out reflow and removing spacer 85 afterwards makes tin ball 84 to interconnect with corresponding conducting terminal 83 and reaches the purpose of accurately planting ball.
Yet, though this plantation ball processing procedure has solved the problem of tin ball 84 with conducting terminal 83 mutual location, but because the carrier 831 of conducting terminal 83 only is to utilize the mode of surface contact to be connected with tin ball 84, be not easy control on one steadiness that comes tin ball 84 to connect, in case make tin ball 84 welding not really then easily break away from and the formation defective products with conducting terminal 83, also be not easy control on two positions of coming tin ball 84 to connect, make all tin balls 84 be not easy after conducting terminal 83 is connected in the same planely, influential follow-up electric connector 8 and circuit board 9 carry out the worry of surface adhering processing procedure.
Summary of the invention
Therefore, purpose of the present invention is to provide a kind of prior art scolder that is different to plant and connect processing procedure and can promote the scolder that scolder connects steadiness and plant the method for connecing.
A further object of the present invention is to provide a kind of scolder that can promote the coplanarity after scolder connects to plant the method for connecing.
The scolder that is applied to electric connector of the present invention is planted the method for connecing and is mainly comprised following steps:
At first the complex conduction terminal group is loaded in the insulating body, and one of conducting terminal welding ends is all protruded from outside one of insulating body side.
Prepare a tray, the welding ends position that go up corresponding to each conducting terminal on one of tray surface is positioned with a scolder respectively.
Make the welding ends contact that is assembled in the conducting terminal in the insulating body and be stained with sticking a certain amount of scaling powder.
Then, the side that is protruding with complex conduction terminal welding ends of guiding insulating body is approaching to the one side of the plural scolder of being positioned with of tray, makes the welding ends of conducting terminal contact with corresponding scolder respectively.
At last, to the tray heating, make that the scolder that is positioned on the tray is softening, by the own weight of electric connector, make the welding ends gravitate of each conducting terminal and thrust in the softening corresponding scolder, treat after the scolder cooling to such an extent that the welding ends of coated with conductive terminal forms affixed.
Effect of the present invention is, utilize electric connector last, tray under configuration, weight by electric connector is thrust in the corresponding scolder welding ends of each conducting terminal, the mode that has than the contact of prior art surface forms more firm joint, best situation can make the welding ends of conducting terminal thrust the bottom surface of contact tray recess behind the scolder, and all scolders of flatness may command when the mat tray is shaped are all in the same plane.
Description of drawings
Fig. 1 is a three-dimensional exploded view, and the example that an electronic building brick mat one electric connector and a circuit board electrically connect is described;
Fig. 2 is a part of cross-sectional schematic, and the annexation of an a kind of conducting terminal of prior art and a tin ball is described;
Fig. 3 is a part of cross-sectional schematic, illustrates that prior art further improves the annexation from a kind of electric connector and the tin ball of Fig. 2;
Fig. 4 is a schematic diagram, and the electric connector of key diagram 3 is in planting configuration when connecing the tin ball and the syntagmatic of using a spacer;
Fig. 5 uses scolder of the present invention to plant one of the method for connecing electric connector structure decomposing schematic representation;
Fig. 6 is another angle stereogram of conducting terminal one of among Fig. 5;
Fig. 7 is the flow chart of steps that scolder of the present invention is planted the preferred embodiment of one of the method for connecing;
Fig. 8 is an action schematic diagram, and the syntagmatic of an electric connector and a tray is described;
Fig. 9 is one of the represented action schematic diagram of the mode of partly analysing and observe with the side, and the welding ends of the softening preceding conducting terminal of tin ball and the annexation of tin ball be describeds; And
Figure 10 is one of the represented action schematic diagram of the mode of partly analysing and observe with the side, and the welding ends of the conducting terminal after the tin ball softens and the annexation of tin ball be describeds.
Embodiment
About aforementioned and other technology contents, characteristics and effect of the present invention, one of with reference to the accompanying drawings in the detailed description of preferred embodiment, can know and understand in following cooperation.
Consult Fig. 5 and Fig. 6, the scolder that is applied to electric connector of the present invention is planted the preferred embodiment of one of the method for connecing and is provided an electric connector and scolder (figure do not show) welding of plural number as the tin ball, in the following description, the form of scolder with the tin ball as representative, but in fact not as limit, and tin ball also non-is decided to be sphere.Wherein, electric connector that the inventive method is used 1 includes the conducting terminal 12 in the insulating body 11 of being placed in of an insulating body 11 and plural number.
Insulating body 11 generally is a cuboid, and it is formed with one first 111 and one opposite with first 111 second 112, makes and is provided with the containing hole 113 that plural number connects first 111 and second 112 in the insulating body 11.Insulating body 11 among the figure only shows the containing hole 113 of minority as representative, and the number of containing hole 113 numbers is on deciding as the pin of electronic building bricks such as central processing unit (figure does not show) or the number of electrical contact that institute's desire connects.
Conducting terminal 12 (as shown in Figure 6) has a contact jaw 121 and a welding ends 122, it can be assembled in the containing hole 113 of insulating body 11, contact jaw 121 generally is configured as the elastic arm form of a bending, welding ends 122 then is configured as a fork-shaped with two tips, make contact jaw 121 protrude from first 111 outer in order to contact with electronic building brick (figure does not show), welding ends 122 then protrudes from second 112 and forms electric connection in order to connect the tin ball with circuit board (figure does not show) outward.And the sheerly illustrational character of the form of conducting terminal 12 herein, in fact the shape of its contact jaw 121 or welding ends 122 all can change, and it changes because of non-discussion scope of the present invention, so in this i.e. narration in detail.
With reference to figure 7, the step of operating process of the present invention is as follows:
At first by shown in Figure 8, complex conduction terminal 12 is assembled in the insulating body 11, make the welding ends 122 of conducting terminal 12 all protrude from second 112 outer (as shown in Figure 9) of insulating body 11, in planting the process that connects, insulating body 11 is with first 111 up and second 112 direction configuration down.
Secondly can be simultaneously with reference to figure 8 and Fig. 9, prepared beforehand has a tray 2, the upper surface of tray 2 forms a recess 21 respectively corresponding to the position of the welding ends 122 of each conducting terminal 12, make each recess 21 in order to ccontaining location one tin ball 3, in this example, all form hemispheric concave surface in the recess 21 with tin ball 3 couplings, but not as limit, as trapezoidal, back taper, ellipse, even rectangle or the like concave surface also can, as long as can make tin ball 3 stay in the recess 21 and can arbitrarily not break away from recess 21.In addition, the kenel of tray 2 coordinated insulation body 11 rectangular bodies on the face that is formed with plural recess 21 more is provided with four restriction guide blocks 22, each restriction guide block 22 all stretches out certain distance so that L shaped section is convex, and make each restriction guide block 22 be all rough shape center of medial surface of 90 degree angles towards tray 2, four restriction guide blocks 22 all can be relatively and four corner EDGE CONTACT of insulating body 11 rectangles, in other words, four restriction guide blocks of mat 22 constitute the activity space of a strangulation insulating body 11, and in fact, because of this routine insulating body 11 is a rectangle, therefore two restriction guide blocks 22 only are set also can reach identical functions with contact insulating body 11 edge, two corners online at the diagonal angle, so the number of restriction guide block 22 and overall dimension that form still must be looked insulating body 11 and do suitable variation with the contacting points position of insulating body 11, and the effect of restriction guide block 22 will further specify following.
Then, make the welding ends 122 that is assembled in the conducting terminal 12 in the insulating body 11, make the welding ends 122 of these conducting terminals 12 all attach a certain amount of scaling powder by an accommodating device (figure does not show) that has a scaling powder.
Then as shown in Figure 8, make tray 2 dispose in horizontal direction, it is positioned with one of plural tin ball 3 and faces up, make whole electric connector 1 be positioned at tray 2 tops, insulating body 11 is protruding with second 112 of welding ends 122 of complex conduction terminal 12 down, and draw or electric connector 1 is placed in four restriction guide blocks, the 22 formed activity spaces in the mode of manually taking with automation equipment, using guiding insulating body 11 only can move up at upper and lower, and can not move with respect to tray 2 towards the side to the left or to the right, when electric connector 1 no longer is subjected to automation facility or manpower and supports, the weight of electric connector 1 self will make that second 112 surface to the plural tin ball 3 of being positioned with of tray 2 of the plural welding ends 122 of being protruding with of insulating body 11 is approaching, up to the welding ends 122 of conducting terminal 12 respectively with corresponding tin ball 3 contacts (as shown in Figure 9).
At last, to tray 2 heating, make the tin ball 3 that is positioned on the tray 2 soften or fusing, again by the own weight of electric connector 1, make welding ends 122 gravitates of each conducting terminal 12 and thrust the corresponding tin ball 3 interior (as shown in figure 10) of softening or fusing, but treat the welding ends 122 of coated with conductive terminal 12 after 3 hardenings by cooling of tin ball and form affixed, electric connector 1 can be taken out on tray 2 afterwards, tray 2 connects the processing procedure repetitive cycling and uses with then can planting for the tin ball of another electric connector 1 after electric connector 1 separates.
In addition, when the gravity of electric connector 1 utilization own and tray 2 mutually near the time, can apply a counterweight again in electric connector 1 top, the form of counterweight can be a weight with constant weight, or utilize facility appropriate location on electric connector 1 to impose downward strength, make counterweight provide an extra strength to strengthen the gravity of electric connector 1, guarantee that the welding ends 122 of conducting terminal 12 thrusts the bottom surface (position as shown in figure 10) of the corresponding recess 21 of corresponding tin ball 3 back contact trays 2, so, recess 21 at tray 2 has had under the condition of certain flatness in making when being shaped, may command tin ball 3 is all in the same plane with respect to the position of insulating body 11, help to improve electric connector 1 and be welded in reliability on the circuit board with the surface adhering method.
In sum, scolder of the present invention is planted the method for connecing, by the scolder of the prior location of tray as the tin ball, make the electric connector that is assembled with the complex conduction terminal approaching to tray, cause the welding ends of conducting terminal to contact earlier with corresponding tin ball, and after making the softening or fusing of tin ball, utilize the weight of electric connector self and the welding ends of conducting terminal is thrust in the tin ball, affixed with mode and conducting terminal that the tin ball that makes after the hardening by cooling is coated, have that only to contact ways of connecting more firm with electrical contact surfaces than prior art, utilize the flatness of tray can quite easily control all tin balls simultaneously, so can reach purpose of the present invention really in the coplanarity of planting after connecing.
The above person of thought, it only is preferred embodiment of the present invention, when not limiting scope of the invention process with this, promptly the simple equivalent of doing according to the present patent application claim and description generally changes and modifies, and all should still belong in the scope that patent of the present invention contains.
Symbol description
1 electric connector, 8 electric connectors
11 insulating bodies, 81 insulating bodies
111 first surfaces, 812 lower surfaces
112 second 813 mating surfaces
12 conducting terminals, 82 accommodating holes
121 contact jaws, 83 conducting terminals
122 welding ends, 831 carriers
2 trays, 84 tin balls
21 recesses, 85 spacers
851 perforation of 22 restriction guide blocks
3 tin balls, 9 circuit boards
7 central processing units, 91 electrical contacts
71 pins
Claims (5)
1. a scolder that is applied to electric connector is planted the method for connecing, and the welding of an electric connector and plural scolder is provided, and this electric connector includes an insulating body and plural number is placed in the interior conducting terminal of this insulating body, and this method includes following steps:
(1) the complex conduction terminal group is loaded in this insulating body, and one of this conducting terminal welding ends is all protruded from outside the side of this insulating body;
(2) preparation has a tray, and a surface of this tray is gone up corresponding to the welding ends position of this conducting terminal respectively and is positioned with a scolder respectively;
(3) make the welding ends that is assembled in the conducting terminal in this insulating body contact and attach a certain amount of scaling powder;
(4) it is approaching mutually to the one side of the plural scolder of being positioned with of this tray to guide the side that is protruding with complex conduction terminal welding ends of this insulating body, make described conducting terminal welding ends respectively with this corresponding scolder contact; And
(5) to this tray heating, make that the described scolder that is positioned on this tray is softening, and by the own weight of this electric connector, it is softening in should scolder that the welding ends gravitate of this conducting terminal is respectively thrust, and treating must be affixed with the welding ends of this conducting terminal after this solder cools.
2. scolder according to claim 1 is planted the method for connecing, and wherein described this tray of this step (2) is located the mode of this scolder, is that the surperficial recess that is provided with the corresponding described welding ends position of plural number and supplies to hold this scolder of one of this tray is reached.
3. scolder according to claim 1 is planted the method for connecing, wherein this insulating body of the described guiding of this step (4) is to the approaching mode of this tray, be to be provided with at least two relative restriction guide blocks at this tray, the shape of described restriction guide block forward surface then cooperates the shape of this insulating body periphery, makes that forming this insulating body of strangulation between these two restriction guide blocks only can reach to the activity space that this tray direction moves.
4. scolder according to claim 3 is planted the method for connecing, wherein described this tray of this step (4) is to dispose in horizontal direction, making this tray be positioned with one of plural scolder faces up, this electric connector then is positioned at this tray top, and this insulating body is protruding with facing down of welding ends of complex conduction terminal, makes this electric connector from top to bottom approaching to this tray.
5. scolder according to claim 2 is planted the method for connecing, wherein this step (5) can further apply a counterweight on this electric connector, make this counterweight strengthen the gravity of this electric connector and force the welding ends of this conducting terminal to thrust behind this corresponding scolder and contact the inner bottom surface of this recess, flatness when being shaped by the plural recess inner bottom surface of this tray also is positioned at same plane with after controlling described scolder and this corresponding welding ends being affixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031331769A CN100524974C (en) | 2003-07-24 | 2003-07-24 | Solder planting method for electric connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031331769A CN100524974C (en) | 2003-07-24 | 2003-07-24 | Solder planting method for electric connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1571224A CN1571224A (en) | 2005-01-26 |
| CN100524974C true CN100524974C (en) | 2009-08-05 |
Family
ID=34470020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031331769A Expired - Fee Related CN100524974C (en) | 2003-07-24 | 2003-07-24 | Solder planting method for electric connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100524974C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10122141B1 (en) | 2017-06-16 | 2018-11-06 | Lotes Co., Ltd | Method for manufacturing electrical connector |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112635423A (en) * | 2020-11-30 | 2021-04-09 | 中航光电科技股份有限公司 | BGA connector |
-
2003
- 2003-07-24 CN CNB031331769A patent/CN100524974C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10122141B1 (en) | 2017-06-16 | 2018-11-06 | Lotes Co., Ltd | Method for manufacturing electrical connector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1571224A (en) | 2005-01-26 |
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