CN201142401Y

CN201142401Y - Electric connector

Info

Publication number: CN201142401Y
Application number: CNU2007200610258U
Authority: CN
Inventors: 朱德祥
Original assignee: Lotes Guangzhou Co Ltd
Current assignee: Lotes Guangzhou Co Ltd
Priority date: 2007-12-06
Filing date: 2007-12-06
Publication date: 2008-10-29
Anticipated expiration: 2017-12-06

Abstract

The utility model provides a novel electric connector, which comprises an insulating main body provided with a plurality of accommodating holes, and a plurality of terminals and solder balls accommodated in the accommodating holes. Each terminal comprises a welded part used for contacting the contact part of a butt electronic component and for welding the terminal on a circuit board; the welded part is provided with holes for the solder balls to move freely from side to side therein; the solder balls are movably accommodated in the holes. In the electric connector, the solder balls are movably accommodated in the holes, so that the solder balls can automatically adjust positions when contacting the circuit board, and are relatively evenly butted with the circuit board; the solder balls can move freely from side to side, so that during movement, the solder balls can not be stuck at the lateral edges of the holes, the portions extending out of the bottom of the insulating main body are increased, and the feed is relatively sufficient during welding. Therefore, the electric contact with the circuit board is good.

Description

Electric connector

[technical field]

The utility model relates to a kind of electric connector.

[background technology]

At present, known electric connector, it comprises and is provided with insulating body and a plurality of terminal and the tin ball that a plurality of ends are known accepting groove, but described terminal clamping tin ball, yet the tin ball of this electric connector is Immobile, therefore may cause electric connector to dock out-of-flatness with circuit board, and No. 094123035 disclosed a kind of electric connector of Taiwan patent, this electrical connection comprises insulating base frame and a plurality of conducting terminal and the tin ball that is provided with a plurality of terminal grooves, described terminal comprises weld part and contact site, this weld part is provided with a hole, and the tin ball is movable to be contained in this hole, and the tin ball can slide up and down.Yet this electric connector, because it slides up and down only, illustrate that the intermarginal distance in its left and right sides is less, therefore during the motion of tin ball easily with the both side edges interference of hole and be stuck in this hole, and its part of exposing the insulating body bottom is also with fewer, therefore in the time of may causing welding, the tin that is connected with circuit board is not enough, electrically connects bad.

[summary of the invention]

The utility model electric connector, the tin ball can move at left and right directions freely, can keep excellent electrical property to contact with the butt joint electronic building brick simultaneously.

The utility model electric connector, it comprises insulating body and a plurality of terminal and the tin ball that is located in the accepting hole that is provided with a plurality of accepting holes, described terminal comprises in order to the contact site of contact butt joint electronic building brick and in order to terminal is welded in the weld part on the circuit board, this weld part is provided with for the tin ball hole of move left and right freely therein, and the activity of tin ball is contained in the hole.

The utility model electric connector is because the activity of tin ball is accommodated and is contained in the hole, and therefore when it contacted with circuit board, it can adjust the position automatically, docks smooth with circuit board; And because therefore its move left and right freely can not be stuck in hole lateral edges place when the tin ball move, its part of exposing the insulating body bottom is also with more, expects more enough during welding, so electrically contacts well with circuit board.

[description of drawings]

Fig. 1 is the three-dimensional exploded view of the utility model electric connector;

Fig. 2 is the partial perspective view of electric connector insulating body shown in Figure 1;

Fig. 3 is the partial perspective view in another orientation of electrical connection insulating body shown in Figure 1;

Fig. 4 is the stereogram of electric connector conducting terminal shown in Figure 1;

Fig. 5 is the stereogram in another orientation of electric connector conducting terminal shown in Figure 4;

Fig. 6 is the plane outspread drawing of electric connector conducting terminal shown in Figure 4;

Fig. 7 is the partial schematic diagram of the another kind of execution mode of electric connector conducting terminal shown in Figure 4;

Fig. 8 is the partial top view of electric connector shown in Figure 1 and pin;

Fig. 9 is electric connector shown in Figure 8 and the partial top view of pin after the pin skew;

Figure 10 is the part sectioned view of electric connector shown in Figure 8 along the A-A direction;

Figure 11 is for being electric connector sectional perspective exploded view shown in Figure 1;

Figure 12 is the part sectioned view of electric connector shown in Figure 8 along the B-B direction;

Part figure after Figure 13 electric connector terminal tail end shown in Figure 1 generation elastic deformation;

Figure 14 is the part sectioned view of electric connector shown in Figure 8 along the C-C direction.

[embodiment]

Below in conjunction with accompanying drawing the utility model electric connector is described further.

The utility model electric connector 1 is seen Fig. 1, comprises an insulating body 10 and a plurality of conducting terminal 20 and tin ball 30.Its lower end and circuit board 2 join, and upper end and central processing unit 3 join, as Figure 14.

Please refer to Fig. 2 to Fig. 3, described insulating body 10 is provided with upper surface 11 and lower surface 12, a plurality of accepting holes 13 run through this upper and lower surperficial 11,12 (only draw among Fig. 2,3 one of them), this accepting hole 13 is provided with first madial wall 130, relative with first madial wall is the 3rd madial wall 132, two madial walls in addition are respectively second madial wall 131 and the 4th madial wall 133, and they are arranged in the direction of the clock, and second, four madial walls 131,133 are respectively on the both direction of the left and right sides.The middle part of described first madial wall 130 bottoms outwards is recessed to form a slot to make way 1301, and the two ends of this slot to make way are provided with two first shoulders 1302, and this two first shoulder 1302 can link to each other with second madial wall 131 and the 4th madial wall 133, also can separate.Described the 3rd madial wall 132 lower ends convex surface 1320 that extended internally, the upper surface of this convex surface 1320 forms a stopping surface 1321.Described second madial wall 131 bottoms have been recessed to form a depressed part 1310 at it near outside the side direction of first madial wall 130, the upper limb of this depressed part forms a stop surface 1311, and second madial wall 131 be higher than depressed part 1310 part be provided with a guide ramp 1312, described guide ramp 1312 is provided with a lead angle 1313 near depressed part 1,310 one sides; Described the 4th madial wall 133 is symmetrically arranged with identical structure with second madial wall 131.

Please refer to Fig. 4, Fig. 5 and Fig. 6, the conducting terminal 20 of the utility model electric connector 1 comprises the contact site 21 in order to contact butt joint electronic building brick, reach by this contact site 21 and extend to form in the same way towards two ends in order to location terminal 20 in the location division 23 and the stop section 212 of insulating body 10 accepting holes 11, and the connecting portion 22 that connects location division 23 and contact site 21, described location division 23 is provided with weld part 230, is used for and circuit board 2 welding.

In the present embodiment, described terminal 20 bends to arch, can certainly be other shape, and terminal 20 both sides are uneven in length, the end of described location division 23 is lower than the end of stop section 212, and promptly a side at 23 places, location division is longer, is convenient to only electroplate the one side of location division 23.

Described contact site 21 comprises two arms 210, and these two arms, 210 inboards extend internally and are provided with protuberance 211, and described protuberance 211 is provided with contact jaw 2110.

Described connecting portion 22 is provided with slender neck 220, described location division 23 comprises first location division 230 and second location division 231, this first location division 230 is weld part simultaneously, described neck 220 extends in the same way by this first location division 230 with described second location division 231 and forms, see that from end view described location division 23 and neck 220 to small part overlap, as Fig. 5.Described second location division 231 has two, and lay respectively at the both sides of neck 220, two outsides that described first location division 231 is connected with second location division 231 are provided with two second shoulders 233, and described first location division 230 ends are provided with lead angle, are convenient to 30 rivetings of tin ball and go into wherein; Described first location division 230 central authorities also are provided with one for tin ball 30 hole 232 of move left and right freely therein.Therefore the lower edge of this hole 232 is arc, can reduce the interference with tin ball 30, is convenient to 30 activities of tin ball.In the present embodiment, the chi on these hole 232 horizontal directions is deposited the size that is slightly larger than on the vertical direction, and it also can be the hole that width from top to bottom increases gradually, perhaps is oval hole, and major axis is positioned at horizontal direction or other shape, as Fig. 6 and Fig. 7.The side that described hole 232 peritremes contact with the tin ball is provided with fillet 2320, and described fillet 2320 forms when moulding hole 232 simultaneously, as Fig. 5.

When described conducting terminal 20 is electroplated, earlier whole end 20 sons are plated one deck nickel, and then the one side that contacts with tin ball 30 at weld part 24 plates one deck solderable coating, promptly solderable coating is between two ends, it electroplates the part that part 2321 probably is positioned at the peritreme lower end, as Fig. 6.

As Figure 12 and Figure 14, when described conducting terminal 20 is contained in these insulating body 10 accepting holes 13, its location division 23 lays respectively on 13 liang of relative madial walls of accepting hole with stop section 212, location division 23 is positioned on first madial wall 130, stop section 212 is positioned on the 3rd madial wall 132, and two second shoulders 233 will be connected to respectively on the stop surface 1311 of second madial wall 131 and the 4th madial wall 133 on the location division 23, described stop section 212 can be connected on the stopping surface 1321 of the 3rd madial wall 132, be equipped with the gap between this conducting terminal 20 and insulating body 10 second madial walls 131 and the 4th madial wall 133, as Figure 10, because this is second years old, four madial walls 131, therefore 133 lay respectively on the left and right directions, are equivalent to conducting terminal 20 and insulating body 10 and are provided with the gap at left and right directions.

As Figure 10 and Figure 14, when described tin ball 30 is contained in this accepting hole 13, the diameter of this tin ball 30 is less than the width between first madial wall 130 and the 3rd madial wall 132, when described tin ball 30 is placed in this accepting groove 13, described conducting terminal 20 contacts with tin ball 30, the one side is connected on the stopping surface 1321 of the 3rd madial wall 132 of insulating body 10, one side is connected to the lower edge of leading terminal 20 holes 232, because its diameter is less than the width between two madial walls, and location division 23 is provided with elipse hole 232, therefore tin ball 30 can be done less moving freely in elipse hole 232, and can not exceed the scope of hole 232 and drop.

As Figure 10, Figure 11 and Figure 12, during assembling, at first terminal 20 riveting is from the bottom up gone in this insulating body 10, the location division 23 of terminal 10 is faced toward insulating body 10 first madial walls 130, and described hole 232 is led a receiving space facing to accepting hole 13 of fillet 2320, terminal 20 is gone in riveting, because terminal 20 location divisions 23 are provided with shoulder 233, and second, four madial walls 131, be respectively equipped with stop surface 1311 on 133, when therefore going into terminal 20 rivetings to the appropriate location, two second shoulders 233 of location division 23 be butted on respectively depressed part 1310 stop surface 1311 on, and can not move again.Because insulating body 10 the 3rd madial wall 132 is provided with stopping surface 1321, therefore after terminal 20 rivetings are gone in the insulating body 10, the end of terminal 20 stop sections 212 will support thereon simultaneously.Terminal 20 is if when moving up like this, shoulder 233 will cooperatively interact with stop surface 1311 and it can't be moved up again, when if terminal 20 will move down, the stop section 221 and the stopping surface 1321 of terminal 20 will cooperatively interact it can't be moved down again, therefore can guarantee that terminal 20 can not break away from insulating body 10.And because the end of insulating body 10 first madial walls 130 is provided with two first shoulders 1302 in order to location terminal 20, therefore when terminal 20 is gone in riveting, two first shoulders 1302 can increase the locating effect of the fashionable vertical direction of terminal 20 rivetings, proofread and correct the normotopia degree of terminal 20.

Then with tin ball 30 again riveting go in the insulating body 10, as Figure 13, because the end of insulating body 10 first madial walls 130 is provided with the slot to make way 1301 that allows bit space of feeding terminal 20 afterbodys distortion, when therefore tin ball 30 is gone in riveting, strain can take place at slot to make way 1301 places in the tail end of terminal 20, and these terminal 20 ends are provided with lead angle, being convenient to 30 rivetings of tin ball goes in this accepting hole 13, after 30 rivetings of tin ball are gone into part exposed insulating body 10 lower surfaces 13, because tin ball 30 can move freely in elipse hole 232, therefore in the time of can guaranteeing that terminal 20 is welded in the butt joint electronic building brick, welding that can be smooth thereon.The peritreme of described hole 232 is provided with fillet 2320, and tin ball 30 can be connected on the smooth peritreme, and protection tin ball 30 preserves from.In the present embodiment, also leave spacing between tin ball 30 and second, four inner surfaces 131,133, as Figure 14, so can help ventilating, and can reduce temperature required when welding, also can avoid insulating body 10 to be heated when producing warpage simultaneously, can reduce the interference of tin ball 30 and insulating body 10.

Electric connector 1 and circuit board 2 are welded in a time-out, because 20 of terminals are electroplated the one side that weld part contacts with tin ball 30, the another side of terminal 20 weld parts 230 has certain weldering property of refusing, therefore in the high-temperature soldering, tin ball 30 after the fusing can not be penetrated into the another side of terminal 20 weld parts 230, and the slot to make way 1301 on insulating body 10 first madial walls can not filled by tin ball 30, even like this in the vibrations process, mutual impulse force takes place between insulating body 10 and the terminal 20, because slot to make way 1301 has certain activity space, it is stressed to cushion welding ends 2300, avoids solder crack.

When inserting central processing unit 3 in this electric connector 1, pin 31 is inserted down from the position of terminal 20 broads, then its contact jaw 2110 translations towards contact site 21 are gone over.Because conducting terminal 20 is provided with thinner neck 220, and terminal 220 and insulating body 10 are equipped with the gap at left and right directions, therefore work as electric connector 1 and be plugged on a time-out with central processing unit 3, if the stitch 30 of central processing unit 3 is offset, terminal 20 contact sites 21 also will be followed it and will be offset together, so can avoid terminal 20 to contact, avoid central processing unit 3 that hit takes place, as Fig. 8 and Fig. 9 with the monolateral of stitch 30.

Described electric connector, it has the neck of elasticity greater than contact site, therefore when outside stitch insertion is forbidden to cause one side of deflection contact site, because neck elasticity is bigger, therefore the another side of terminal also will be followed moving partially, stitch contacts with the both sides of contact site all the time, so electric connector can remain excellent electrical property with the butt joint electronic building brick and is connected.And neck and location division have seen that from end view part overlaps, or the location division is provided with first location division and second location division, this neck and second location division are extended to form by the same end in first location division, therefore location division length is longer, and in limited space, its scope that can be offset is just less, therefore when terminal is gone in riveting, the locating effect that arrives can be played very much in the location division, guarantees that terminal can not be offset, and makes terminal smooth and keep excellent electrical property to be connected with the butt joint electronic building brick.

Therefore described location division is provided with hole, and the tin ball is movable to be contained in this hole, when be welded in electric connector on the circuit board, be convenient to the tin ball and adjust the position automatically, dock with circuit board smooth, the assurance circuit board with dock the electronic building brick excellent electrical property and be connected; And the tin ball can be therein move left and right freely, therefore when the tin ball move, can not be stuck in hole lateral edges place, its part of exposing the insulating body bottom is also more, expects more enough during welding, so can keep better electrically contacting with circuit board.

When the size of this hole horizontal direction during greater than the size of vertical direction, the interference of tin ball and hole two edges just still less, its movable in the horizontal direction scope is just bigger, when electric connector contacts with circuit board, the tin ball can be adjusted the position automatically and align with weld pad on the circuit board and contact smooth, the material that the while terminal stays at vertical direction will be more, so are convenient to terminal other parts structure Design, also can strengthen the intensity of terminal simultaneously.

When this hole when width increases gradually from top to bottom, the material on the terminal dual-side also can be more, are convenient to its design, and because the upper end is narrow, so the material that terminal stays in the horizontal direction is just more sufficient, therefore can make the stability of terminal better.

The manufacture process of this electric connector comprises; The insulating body that is provided with some accepting holes is provided; Metal sheet is provided, the metal sheet punching out is gone out to have the terminal blank of contact site and weld part; Go out a hole at the weld part of terminal blank, make hole peritreme one side form fillet, more flat terminal is bent to form required terminal towards the one side that is provided with fillet; Described terminal is installed in the accepting hole, and the side that will establish fillet is in accepting hole; The tin ball is installed in the accepting hole lower edge butt of one side and hole.

Described electric connector, owing to which is provided with hole, the activity of tin ball is contained in this hole, so it can adjust the position automatically, and is good with the circuit board welding, and the hole peritreme is provided with fillet towards a side of the tin ball centre of sphere or a side that contacts with the tin ball, therefore when in the tin ball loading manhole hole, the one side can contact with smooth hole edge, avoids the scratch of tin ball, and because of fillet can form when the moulding hole simultaneously, so processing is comparatively simple.Making method for electric connector of the present invention is gone out a hole at the weld part of terminal blank, makes hole peritreme one side form fillet, and promptly its fillet forms when the moulding hole simultaneously, does not need punching press once more, therefore can reduce production process.

Claims

1. electric connector, it is characterized in that, it comprises insulating body and a plurality of terminal and the tin ball that is located in the accepting hole that is provided with a plurality of accepting holes, described terminal comprises in order to the contact site of contact butt joint electronic building brick and in order to terminal is welded in the weld part on the circuit board, this weld part is provided with for the tin ball hole of move left and right freely therein, and the activity of tin ball is contained in the hole.

2. electric connector as claimed in claim 1 is characterized in that: the size on the described hole horizontal direction is greater than the size on the vertical direction.

3. electric connector as claimed in claim 1 is characterized in that: described hole width from top to bottom increases gradually.

4. electric connector as claimed in claim 1 is characterized in that: the described hole lower edge is arc.

5. electric connector as claimed in claim 1 is characterized in that: described terminal and accepting hole have the gap that makes both loose fit on left and right directions.

6. electric connector as claimed in claim 1 is characterized in that: described terminal further is provided with in order to the connecting portion of location terminal in location division and the connection contact site and the location division of insulating body accepting hole, and described welding position is on the location division.

7. electric connector as claimed in claim 6 is characterized in that: described location division comprises first location division and second location division, and described connecting portion is provided with neck, and this neck and second location division are extended to form by the same end in first location division.

8. electric connector as claimed in claim 6 is characterized in that: described terminal position portion is provided with shoulder, and the insulating body correspondence is provided with the stop surface that cooperates with it with restriction terminal insertion depth.

9. electric connector as claimed in claim 6 is characterized in that: the terminal further bending of described termination contact portion extends to form the stop section, and described insulating body is provided with in order to the stopping surface of butt stop section to avoid terminal to withdraw from.

10. electric connector as claimed in claim 6 is characterized in that: described contact site comprises two arms, and two arm inboards extend internally and be provided with protuberance, and described protuberance is provided with contact jaw.