CN201498665U - Electrical connector - Google Patents
Electrical connector Download PDFInfo
- Publication number
- CN201498665U CN201498665U CN2009203096528U CN200920309652U CN201498665U CN 201498665 U CN201498665 U CN 201498665U CN 2009203096528 U CN2009203096528 U CN 2009203096528U CN 200920309652 U CN200920309652 U CN 200920309652U CN 201498665 U CN201498665 U CN 201498665U
- Authority
- CN
- China
- Prior art keywords
- transition part
- electric connector
- terminal
- breach
- conducting terminal
- 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 - Fee Related
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- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
The utility model relates to an electrical connector for electrically connecting a chip module to a circuit board. The electrical connector comprises an insulating main body provided with a plurality of terminal accommodating holes and a plurality of conductive terminals assembled in the terminal accommodating holes, wherein each conductive terminal comprises a base part, a transition part positioned under the base part and a clamping hook positioned under the transition part and used for fixing a solder ball. Notches are formed on two opposite sides of the transition part to form a neck the width of which can be reduced; and after the solder ball is heated and melted, molten tin can pass through the notches and climb towards the rear side of the transition part to fully surround and enwrap the transition part of the conductive terminal. The terminals of the electrical connector have better welding, fixing and holding effect.
Description
[technical field]
The utility model relates to a kind of electric connector, relates in particular to a kind of electric connector that is used for connecting chip module on the circuit board that is installed on.
[technical background]
China's utility model patent has disclosed a kind of electric connector No. 2643493, be used to electrically connect chip module to printed circuit board (PCB), it comprises: insulating body and be contained in plurality of conductive terminals in the insulating body, insulating body is provided with the accepting hole of accommodating the tin ball and is common to the terminal of accommodating conducting terminal mutually with accepting hole and bores a hole.Conducting terminal comprises and is assembled in the main body that roughly is vertical shape structure in the terminal perforation, protrudes from the contact site of terminal perforation upper surface and protrude from the weld part that the insulating body lower surface is used for fixing tin ball.Wherein, the free terminal of weld part is provided with the hook that roughly is circular arc, and the upper surface of hook is held the bottom of tin ball and the tin ball is immobilizated in the accepting hole.
But there is following shortcoming at least in above-mentioned electric connector: when being soldered to electric connector on the printed circuit board (PCB), when being heated, the tin ball can become the main body fusion mutually with it that tin liquor depends on conducting terminal, but the main body of conducting terminal is vertical shape structure and certain thickness and width is arranged, tin liquor only can make progress along the front side of main body or creep downwards, and the rear side of main body can't merge with its rear side because tin liquor can't be creeped over, thereby cause the welding of conducting terminal and tin ball firm inadequately, thereby influence the electric connection between electric connector and the circuit board.
Therefore, necessary existing electric connector is improved to overcome the aforementioned disadvantages of prior art.
[utility model content]
The purpose of this utility model is to provide a kind of electric connector, and its conducting terminal has welding effect preferably.
The purpose of this utility model is achieved through the following technical solutions: a kind of electric connector, be used to electrically connect chip module to circuit board, it comprises: be provided with the plurality of terminals accepting hole insulating body, be assembled in plurality of conductive terminals and some tin balls that is positioned at the conducting terminal front side in the terminal accommodation holes, described terminal comprises base portion and is positioned at the transition part of base portion below, the relative both sides of transition part are provided with the breach that is oppositely arranged, after described tin ball was heated and melts, tin liquor was creeped with the transition part of coated with conductive terminal to the rear side of transition part along the breach of transition part.
Compared to prior art, the utility model electric connector has following beneficial effect: the transition part of the conducting terminal of electric connector is provided with breach, tin liquor after the tin ball melts can along breach creep to the rear side of transition part, the transition part of conducting terminal is coated fully, to increase the bonding area between conducting terminal and the tin ball.
[technical background]
Fig. 1 is the three-dimensional combination figure of the utility model electric connector.
Fig. 2 is the three-dimensional exploded view of the utility model electric connector.
Fig. 3 is the end view of the utility model electric connector.
Fig. 4 is the front view at the utility model electric connector back side.
Fig. 5 is for after the conducting terminal of the utility model electric connector and tin ball bonding connect, and the tin bag covers the end view of the end of conducting terminal.
[embodiment]
Please specifically consult Fig. 1 and shown in Figure 5, the utility model electric connector comprises the insulating body 1 that is provided with plurality of terminals accepting hole 10, be contained in the plurality of conductive terminals 2 in the terminal accommodation holes 10 and be immobilizated in the tin ball 3 of conducting terminal 2 bottoms.Wherein, one of them terminal accommodation holes 10 of insulating body 1, a conducting terminal 2 and a tin ball 3 that is immobilizated in conducting terminal 2 bottoms that is contained in the respective terminal hole 10 have only been shown in the drawing.
Please specifically consult shown in Figure 2, conducting terminal 2 of the present utility model is formed by the metal material integrated punching, and it comprises: the holding parts 21 that roughly is the base portion 20 of platy structure, extends straight up from a side of base portion 20 upper ends, the cantilever 23 that extends in the lateral margin bending of holding parts 21 bottoms and upwardly extending elastic portion 22,22 bendings of own elasticity portion, the transition part 25 that extends in the contact sites 24 of cantilever 23 terminal bendings, in base portion 20 lower ends downward and the trip 26 that is positioned at transition part 25 ends.Trip 26 is positioned at the tin ball 3 of its front side to the front curve fixing.Wherein, transition part 25 forms a pair of breach 250 in its both sides near trip 26 places, this breach 250 forms by stamping technology, make the width of the breach 250 of transition part 25 form neck 251 less than the width of transition part 25 other parts, the front side, edge of breach 250 is provided with the guide surface 2500 of inclination, and this guide surface 2500 is convenient to tin liquor and is creeped to coat transition part 25 to transition part 25 rear sides.
Please specifically consult Fig. 2 and shown in Figure 3, the terminal accommodation holes 10 of insulating body 1 of the present utility model is through state, and be divided into accepting groove 100 and the holding slot 101 that is interconnected, holding slot 101 is used for the base portion 20 and the holding parts 21 of fixing conducting terminal 2, and accepting groove 100 is used to accommodate the elastic portion 22 and the fixing tin ball 3 of conducting terminal 2.
When being assembled in conducting terminal 2 and tin ball 3 in the terminal accommodation holes 10, earlier the upper set of conducting terminal 2 by terminal accommodation holes 10 is loaded in the holding slot 101 of terminal accommodation holes 10, then the below of tin ball 3 by terminal accommodation holes 10 is assembled in the accepting groove 100 of terminal accommodation holes 10, the lateral border at the middle part of tin ball 3 fits in the transition part 25 of conducting terminal 2 and the inner edge of trip 26, the end of the trip 26 of conducting terminal 2 against the lateral border of the latter half of tin ball 3 so that tin ball 3 is fixed in the terminal accommodation holes 10.Please specifically consult Fig. 4 and shown in Figure 5, in the time of on electric connector being soldered to circuit board (not shown), after being heated, tin ball 3 becomes liquid tin liquor, the trip 26 of tin liquor elder generation and conducting terminal 2 and transition part 25 merge, creep to the rear side of transition part 25 along the guide surface 2500 of the breach 250 of transition part 25 then, crawl into behind the transition part 25 then tin liquor can to along the top of breach 250 and the guide surface 2500 of bottom simultaneously upwards and creep downwards, tin liquor can form the transition part 25 of conducting terminal 2 and trip 26 fully by this breach 250 and coat.At this moment, it is bigger to merge area between tin liquor and the conducting terminal 2, can effectively guarantee the electric connection between conducting terminal 2 and the circuit board (not shown).
The transition part 25 of conducting terminal 2 of the present utility model is provided with the breach 250 that caves inward, tin liquor during welding can be creeped to the rear side of transition part 25 smoothly along the breach 250 of the transition part 25 of conducting terminal 2, thereby the end of conducting terminal 2 is coated fully, to obtain best welding effect, and the fusion area between assurance tin liquor and the conducting terminal 2, thereby the electric connection between realization conducting terminal 2 and the circuit board (not shown).
Claims (7)
1. electric connector, be used to electrically connect chip module to circuit board, it comprises: be provided with the plurality of terminals accepting hole insulating body, be assembled in plurality of conductive terminals and some tin balls that is positioned at the conducting terminal front side in the terminal accommodation holes, it is characterized in that: described terminal comprises base portion and is positioned at the transition part of base portion below, the relative both sides of transition part are provided with the breach that is oppositely arranged, after described tin ball was heated and melts, tin liquor was creeped with the transition part of coated with conductive terminal to the rear side of transition part along the breach of transition part.
2. electric connector as claimed in claim 1 is characterized in that: described transition part end is provided with trip, and breach is positioned at transition part near the trip place.
3. electric connector as claimed in claim 1 is characterized in that: described this breach forms by stamping technology, makes transition part form the neck of width reduction.
4. electric connector as claimed in claim 3 is characterized in that: the edge of described breach is provided with the guide surface of inclination, and this guide surface is convenient to tin liquor and is creeped backward.
5. electric connector as claimed in claim 1, it is characterized in that: described conducting terminal also comprises from the upwardly extending holding parts in base portion upper end, in the lateral margin bending of holding parts bottom and the elastic portion of extending, the cantilever of own elasticity portion bending reaches in the contact site of cantilevered distal end bending.
6. electric connector as claimed in claim 5 is characterized in that: the terminal accommodation holes of described insulating body is divided into accepting groove and the holding slot that is interconnected.
7. electric connector as claimed in claim 6 is characterized in that: described holding slot is used for the base portion and the holding parts of fixing conducting terminal, and accepting groove is used to accommodate the elastic portion and the fixing tin ball of conducting terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203096528U CN201498665U (en) | 2009-09-04 | 2009-09-04 | Electrical connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203096528U CN201498665U (en) | 2009-09-04 | 2009-09-04 | Electrical connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201498665U true CN201498665U (en) | 2010-06-02 |
Family
ID=42441863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203096528U Expired - Fee Related CN201498665U (en) | 2009-09-04 | 2009-09-04 | Electrical connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201498665U (en) |
-
2009
- 2009-09-04 CN CN2009203096528U patent/CN201498665U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20170904 |