CN201156599Y - Electric Connector - Google Patents
Electric Connector Download PDFInfo
- Publication number
- CN201156599Y CN201156599Y CNU2007200579857U CN200720057985U CN201156599Y CN 201156599 Y CN201156599 Y CN 201156599Y CN U2007200579857 U CNU2007200579857 U CN U2007200579857U CN 200720057985 U CN200720057985 U CN 200720057985U CN 201156599 Y CN201156599 Y CN 201156599Y
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- CN
- China
- Prior art keywords
- terminal
- electric connector
- insulating body
- tin ball
- face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses an electric connector which includes an insulating body which is provided with a plurality of terminal holding slots and a plurality of wall surfaces are arranged in each terminal holding slots; the electric connector also includes a plurality of conductive terminals which are arranged in the corresponding terminal holding slots and each conductive terminal is provided with a contact part which can be butted with an electric component and a welding part which can be welded with a circuit board; the electric connector also includes a plurality of solder balls which are at least partially arranged in the terminal holding slots; besides, the terminals can slide in a preset range relatively to the holding slots and drive the solder balls to move. As the insulating body and the conductive terminals of the electric connector are provided with a structure for preventing the welding points of the solder balls from crazing, besides, the insulating body and the conductive terminals can lead the solder balls to have a certain moving space in the terminal holding slots through running fit and the insulating body is also correspondingly provided with a limitation structure, therefore, the solder balls and the terminals can not fall off, thus leading the working of the electric connector to be normally carried out.
Description
[technical field]
The utility model relates to a kind of electric connector, refers in particular to chip module is electrically connected to electric connector on the circuit board.
[background technology]
Along with being showing improvement or progress day by day of electronic circuit, the processing speed of chip module is also more and more faster, be used for chip module is electrically connected to the electric connector of circuit board, this electric connector generally comprises insulating body, be located in the insulating body a plurality of terminals and with the corresponding tin ball of terminal, insulating body is provided with terminal containing slot, terminal accommodating is in corresponding terminal containing slot, and the tin ball also is installed in the bottom of terminal containing slot, and connect mutually with terminal, and numbers of terminals is corresponding also more and more, thereby also more and more higher to the specification and the performance requirement of electric connector.
Electric connector generally all is by surface soldered mode (SMT:Surface Mounted Technology) the tin ball bonding to be connect to be fixed on the circuit board, so that electric connector is electrically connected to circuit board, yet the tin ball bonding connect be fixed on the circuit board after, often find that the difficult a variety of causes of being avoided causes collision to electric connector, and the tin ball is split or empty weldering, thereby terminal can not be electrically connected on the circuit board.
The existing fixedly mode of tin ball generally has two kinds: a kind of is pre-solder ball mode, specifically can be referring to No. 6247635 patent of the U.S., this mode at first fixedly is located in terminal in the corresponding terminal containing slot, again the tin ball is melted in advance, and be fixed on the terminal, owing to the tin ball welds with terminal in advance, so when being connected on the tin ball bonding on the circuit board, the relative circuit board of tin ball can not be adjusted the position up and down, and makes each tin ball be maintained at uniform height regularly.
The mode of another kind of terminal folder tin ball, specifically can be referring to No. 01127851 patent of China, this mode also is at first terminal to be fixedly arranged in the corresponding terminal containing slot, again the tin ball chuck is located between the cell wall of terminal and terminal containing slot, also be that the tin ball bonding is connected on the circuit board at last, because tin ball predetermined fixed is between the cell wall of terminal and terminal containing slot, so the relative circuit board of tin ball can not be adjusted the position up and down.
And the insulating body and the circuit board facing surfaces of existing electric connector, its evenness can not remain in precisely smooth situation, the relation of Yin Wendu or loading sometimes, cause the incomplete smooth situations such as some buckling deformation of surface of insulating body or circuit board, when welding, the tin ball is all fixed in advance sometimes, and circuit board can not be adjusted the position up and down relatively, thereby when welding, some tin ball can't contact with circuit board, causes empty weldering; And some is too little because of distance between insulating body and the circuit board, and makes the good tin ball of welding produce situation generations such as solder crack, thereby influences being electrically conducted between electric connector and the circuit board.
Therefore, be necessary to design a kind of novel electric connector, to overcome above-mentioned defective.
[utility model content]
The utility model purpose is to provide a kind of electric connector that can effectively prevent solder crack.
The utility model provides a kind of electric connector, and it comprises: an insulating body, be provided with a plurality of terminal containing slots, and be provided with a plurality of walls in each terminal containing slot; A plurality of conducting terminals are located in the corresponding terminal containing slot, each conducting terminal be provided with can with the contact site of butt joint electronic building brick contact and the weld part that can weld mutually with circuit board; And a plurality of tin balls, described tin ball to small part is located in the terminal containing slot, and wherein, described terminal can slide in preset range and drive the tin ball and move relative to terminal containing slot.
The utility model also provides a kind of electric connector, and it comprises: an insulating body is provided with a plurality of terminal containing slots; A plurality of conducting terminals are located in the corresponding terminal containing slot; A plurality of tin balls match with corresponding terminal, and are located in the terminal containing slot to small part, wherein, are loose fit between described terminal and the terminal containing slot.
The utility model electric connector, be provided with the structure that prevents tin ball bonding point cracking because of this electric connector insulating body and conducting terminal, and can make the tin ball that certain activity space is arranged in terminal containing slot by loose fit between them, the also corresponding position limiting structure that is provided with of insulating body, thereby guarantee that tin ball or terminal can not come off, and carry out the working properly of electric connector.
[description of drawings]
Fig. 1 is the three-dimensional exploded view of the stitch of the utility model electric connector and chip module;
Fig. 2 is the stereogram of the insulating body of electric connector shown in Figure 1;
Fig. 3 is the stereogram of other direction of the insulating body of electric connector shown in Figure 1;
Fig. 4 is the stereogram of the conducting terminal of electric connector shown in Figure 1;
Fig. 5 is the upward view of electric connector shown in Figure 1;
Fig. 6 is the cutaway view of Fig. 5 in the B-B direction;
Fig. 7 is the cutaway view of Fig. 5 in the A-A direction;
Fig. 8 is the vertical view of electric connector shown in Figure 1;
Fig. 9 is the three-dimensional assembly diagram of the stitch of electric connector shown in Figure 1 and chip module;
Figure 10 is the three-dimensional exploded view of second embodiment of the utility model electric connector;
Figure 11 is the stereogram of the insulating body of electric connector shown in Figure 11;
Figure 12 is the constitutional diagram of electric connector shown in Figure 11;
Figure 13 is the terminal schematic diagram of the 3rd embodiment of the utility model electric connector;
Figure 14 is the insulating body schematic diagram of the utility model electric connector;
Figure 15 is the front view after the electric connector assembling shown in Figure 14
Figure 16 is the cutaway view of the C-C direction of electric connector shown in Figure 15;
Figure 17 is portion's view of the D-D direction of electric connector shown in Figure 15;
Figure 18 is the terminal schematic diagram of the 4th embodiment of the utility model electric connector;
Figure 19 is contained in the interior upward view of electric connector for terminal group shown in Figure 180;
Figure 20 is the cutaway view of the E-E direction of electric connector shown in Figure 19;
Figure 21 is the cutaway view of the F-F direction of electric connector shown in Figure 19.
[specific embodiment]
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 1 to Fig. 9 is the utility model first embodiment.As shown in Figure 1, the utility model electric connector is used for that (Fig. 1 is the stitch 13 of display chip module only with chip module 13, so replace chip modules with its stitch 13) be electrically connected to circuit board (scheming not show), the a plurality of conducting terminals 11 that comprise insulating body 10, contact with chip module stitch 13 reach and conducting terminal 11 corresponding tin balls 12, wherein insulating body 10 is provided with a plurality of terminal containing slots 101, and conducting terminal 11 correspondences are contained in wherein.
As shown in Figure 2 to Figure 3, be provided with four walls in each terminal containing slot 101 of described insulating body 10, be respectively first wall 31, second wall 32, the 3rd wall 33 and wall face 34 in regular turn, wherein on first wall 31, be provided with a cascaded surface 102, be provided with first projection 103 on the 3rd wall 33, wherein the vertical height of the cascaded surface 102 and first projection 103 is all less than the vertical height of insulating body 10.
As shown in Figure 3, the relative stopper slot 104 that respectively is provided with on second wall 32 and wall face 34, and this two stopper slot 104 is oppositely arranged.
As shown in Figure 4, described conducting terminal 11 is comprised linking together and contact site in obtuse angle 21 and weld part 22 by the moulding of metal integrated punching.
Described contact site 21 be provided with first contact site 211 that contacts with chip module 13 and second contact site 212 and by described first contact site 211 near the shell fragment 2111 that extends under second contact site, 212 1 side direction, and formation one fluting 213 that contacts with chip module stitch 13 between first contact site 211 and second contact site 212.Wherein first contact site 211 is inclined-plane 2112 settings away from a side of second contact site 212, reaches the effect of zero insertion force when inserting chip module 13.
Described weld part 22 is provided with a structure that cooperates with tin ball 12, and this structure can be through hole 221 or hook, be through hole 221 and be positioned at terminal weld part 22 both sides face 222 up at present embodiment, and by weld part 22, the retaining that extend the bottom supports structure 225.
Extremely shown in Figure 7 as Fig. 5, described tin ball 12 is arranged in insulating body 10, tin ball 12 has certain clearance with the wall of insulating body 10, and tin ball 12 parts are located in the through hole 221, be this, tin ball 12 has certain clearance in insulating body 10 and between the wall, can produce loosening with through hole 221, implant in the insulating body 10 at tin ball 12, because the position of terminal 11 both sides below shell fragment is provided with face 222 up, corresponding, have one can support first projection 103 that shell fragment 2111 moves down with restriction terminal 11 on the 3rd wall 33 of insulating body 10, and cooperate the face down 223 that moves down with the restriction terminal with described face 222 up.
As Fig. 6 and shown in Figure 8; some is contained in described tin ball 12 in the through hole 221 of terminal 11; when tin ball 12 is welded to circuit board; because terminal 11 can be movable in accepting groove 101; and tin ball 12 parts are located in the terminal through-hole 221; thereby terminal 11 can drive tin ball 12 and move up and down; and when terminal 11 moves down when being subjected to downward pressure; there is shell fragment 2111 to be held in and prevents unlimited the moving down of terminal on first projection 103; thereby make insulating body 10; realize the effect of loose fit between terminal 11 and tin ball 12 threes, the pad of protection tin ball 12.
As shown in Figure 9, described conducting terminal 11 is located in the insulating body 10, and described shell fragment 2111 is used for when chip module pressure side son 11, can prevent that terminal 11 is toward pressing down, play spacing effect, but under normal condition, described shell fragment 2111 is not contact with first projection 103.
The moving direction of chip module stitch 13 moves in the insulating body accepting groove 101 along the direction of cascaded surface 102 with A, contact with second contact site 212 with first contact site 211 of terminal, and described first contact site 211 is an inclined-plane 2112 and is provided with, be beneficial to when chip module stitch 13 inserts and realize the effect of zero insertion force, thereby guarantee electrically conducting of electric connector.And when welding, can be by adjusting the relative altitude between tin ball 12 and the circuit board, the tin ball 12 relative circuit boards after the welding are fixed, and can be prevented the problem that the tin ball ftractures.
Figure 10 to Figure 12 is second embodiment of the utility model electric connector, itself and the first embodiment difference are as shown in figure 10, first contact site 211 ' of the conducting terminal 11 ' of present embodiment and second contact site 212 ' extension downwards respectively are provided with first shell fragment 2111 ' and second shell fragment 2112 ', this two shell fragment can prevent that terminal 11 ' is toward pressing down, and can not guarantee the correct position of terminal 11 ' in insulating body 10 ' because of unbalance stress makes terminal 11 ' bend to the left or to the right.
Extremely shown in Figure 12 as Figure 11; the insulating body 10 ' of present embodiment is different with first embodiment to be: described insulating body 10 ' is provided with a sunk area 30 ' on the wall between two stopper slots 104 '; this sunk area 30 ' is in order to be installed with part tin ball (as shown in figure 12); when terminal 11 ' is not mobile in insulating body 10 '; the activity space of tin ball 12 ' can be provided at the through hole 221 ' of terminal 11 '; when chip module during at compacting conducting terminal 11 '; conducting terminal 11 ' can drive tin ball 12 ' and move up and down; thereby tin ball 12 ' can float in sunk area 30 ' and between the through hole of conducting terminal 11 ', reaches the effect of protection tin ball bonding point.And the sunk area 30 ' of insulating body 10 ' supports structure 225 ' with the retaining of terminal 11 ' makes tin ball 12 ' that certain floating space be arranged in insulating body 10 ', and can not come off, thereby prevents that the tin ball from damaging, and guarantees that electric connector normally moves.
Be provided with first shell fragment 2111 ' and second shell fragment 2112 ' because of terminal 11 ' in addition, when chip module compacting conducting terminal 11 ', can prevent that terminal 11 ' is unconfined to pressing down, be beneficial to being connected of two contact sites of chip module stitch 13 ' and terminal 11 ', further guarantee the operate as normal of electric connector.
The schematic diagram of the 3rd embodiment of Figure 13 to Figure 17 the utility model electric connector, the difference of itself and above-mentioned two embodiment is: shown in Figure 13 to 14, terminal 11 "; both sides are provided with the kink that roughly is half " U " shape that a vertical bending extends to form; it comprises first kink 1111 " and second kink 1112 "; be used for when terminal 11 " when being subjected to the CPU press power, to support insulating body 10 " second projection 103 ", prevent terminal 11 " unconfined pressing down, thereby guarantee terminal 11 " at accepting groove 101 " in be unlikely to come off.
Figure 18 to Figure 21 is the schematic diagram of the 4th embodiment of the utility model electric connector, itself and above-mentioned the 3rd embodiment difference are: described terminal 11 " ' middle part be provided with a through hole 112 " ', terminal 11 " position of ' both sides at through hole 112 " ' below is provided with face 113 up " the 3rd wall 33 of '; corresponding; insulating body 10 " ' is provided with one and can inserts this through hole 112 " ' move down with the restriction terminal the 3rd projection 103 " ', and with described face 113 up " ' cooperate with restriction terminal 11 " ' face down 1031 of moving down " ', and through hole 112 " ' inboard first support division 1111 that protrudes " ' with second support division 1121 " '.Be used for when terminal 11 " the 3rd protuberance 103 of ' when being subjected to the CPU press power, " ' to support insulating body 10 " ', prevent terminal 11 " ' unconfined pressing down, thereby guarantee terminal 11 " be unlikely to come off in ' at accepting groove 101 " '.Wherein prevent terminal 11 " ' retaining that comes off downwards support structure 225 " ', by terminal 11 " ' fixed part bottom leave hook 225 " ' form, and can hold tin ball and and 112 " ' between allow tin ball activity space.
Claims (10)
1. an electric connector is used for connecting the butt joint electronic building brick to circuit board, it is characterized in that, comprising:
One insulating body is provided with a plurality of terminal containing slots, is provided with a plurality of walls in each terminal containing slot;
A plurality of conducting terminals are located in the corresponding terminal containing slot, each conducting terminal be provided with can with the contact site of butt joint electronic building brick contact and the weld part that can weld mutually with circuit board; And
A plurality of tin balls, described tin ball to small part is located in the terminal containing slot, and wherein, described terminal can slide in preset range and drive the tin ball and move relative to terminal containing slot.
2. electric connector as claimed in claim 1, it is characterized in that: described terminal middle part is provided with at least one shell fragment that extends down, the position of terminal both sides below shell fragment is provided with face up, corresponding, the insulating body wall is provided with one can support first projection that described shell fragment moves down with the restriction terminal, and cooperates the face down that moves down with the restriction terminal with described face up.
3. electric connector as claimed in claim 1, it is characterized in that: described terminal both sides are provided with the kink that at least one vertical bending extends to form, the position of terminal both sides below kink is provided with face up, corresponding, the insulating body wall is provided with one can support second projection that described kink moves down with the restriction terminal, and cooperates the face down that moves down with the restriction terminal with described face up.
4. electric connector as claimed in claim 1, it is characterized in that: described terminal middle part is provided with at least one through hole, the position of terminal both sides below through hole is provided with face up, corresponding, the insulating body wall is provided with one can insert the 3rd projection that this through hole moves down with the restriction terminal, and cooperates the face down that moves down with the restriction terminal with described face up.
5. electric connector as claimed in claim 1 is characterized in that: described electric connector is provided with the fit structure that the relative terminal of tin ball is relatively moved in preset range.
6. electric connector as claimed in claim 5 is characterized in that: described terminal weld part bottom is extended a hook part inwardly, and the distance between this hook part and the relative accepting groove wall is less than the sphere diameter of tin ball, and this hook part forms described fit structure.
7. electric connector as claimed in claim 5, it is characterized in that: described terminal weld part is provided with a through hole of accommodating the tin ball, this through hole has lower edge, and the distance between this lower edge and the relative accepting groove wall is less than the sphere diameter of tin ball, and this through hole forms described fit structure.
8. electric connector as claimed in claim 1 is characterized in that: described contact site is tabular and tilts inwardly, and one side upper end is provided with toward the face that has a down dip.
9. an electric connector is characterized in that, comprising:
One insulating body is provided with a plurality of terminal containing slots;
A plurality of conducting terminals are located in the corresponding terminal containing slot;
A plurality of tin balls match with corresponding terminal, and are located in the terminal containing slot to small part, wherein, are loose fit between described terminal and the terminal containing slot.
10. electric connector as claimed in claim 9 is characterized in that: also be loose fit between described tin ball and the terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200579857U CN201156599Y (en) | 2007-10-08 | 2007-10-08 | Electric Connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200579857U CN201156599Y (en) | 2007-10-08 | 2007-10-08 | Electric Connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201156599Y true CN201156599Y (en) | 2008-11-26 |
Family
ID=40104375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200579857U Expired - Lifetime CN201156599Y (en) | 2007-10-08 | 2007-10-08 | Electric Connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201156599Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412448A (en) * | 2011-12-29 | 2012-04-11 | 番禺得意精密电子工业有限公司 | Electric connector and manufacturing method thereof |
-
2007
- 2007-10-08 CN CNU2007200579857U patent/CN201156599Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412448A (en) * | 2011-12-29 | 2012-04-11 | 番禺得意精密电子工业有限公司 | Electric connector and manufacturing method thereof |
| CN102412448B (en) * | 2011-12-29 | 2014-01-08 | 番禺得意精密电子工业有限公司 | Electric connector and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081126 |