CN201674033U - Electric connector - Google Patents
Electric connector Download PDFInfo
- Publication number
- CN201674033U CN201674033U CN2010201867783U CN201020186778U CN201674033U CN 201674033 U CN201674033 U CN 201674033U CN 2010201867783 U CN2010201867783 U CN 2010201867783U CN 201020186778 U CN201020186778 U CN 201020186778U CN 201674033 U CN201674033 U CN 201674033U
- Authority
- CN
- China
- Prior art keywords
- electric connector
- locating piece
- tin ball
- receiving space
- insulating body
- 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 provides an electric connector, comprising an insulating body; a plurality of containing holes are arranged from top to bottom on the insulating body in a penetrating manner; the bottom surface of the insulating body is convexly provided with multiple rows of first positioning blocks and multiple rows of second positioning blocks; the first positioning blocks and the second positioning blocks in the adjacent rows are at least partially positioned in the same row and are arranged in staggered manner at intervals; the first positioning blocks are provided with first butting surfaces; the first side surface and two second positioning blocks in the adjacent rows are enclosed into a containing space; the containing space is positioned below the containing holes and is communicated therewith; and each terminal is provided with a welding part which at least partially enters the containing space and is positioned at the opposite part of each first butting surface. The design of the electric connector effectively saves the space occupied by tin balls on the bottom surface of the connector, and hot air reaches the upper surfaces of the tin balls by the gap among the positioning blocks when in welding, so that the heating of the tin balls is balanced.
Description
[technical field]
The utility model relates to a kind of electric connector, refers to that especially a kind of being used for is connected to electric connector on the circuit board with chip module.
[background technology]
Along with being showing improvement or progress day by day of electronic circuit, the degree of integration of chip module is more and more high, and speed also Huilai is faster, so the connector terminals quantity of docking with chip module is also corresponding more and more many.And this electric connector generally comprises an insulating body, is located in most terminals and and the corresponding most tin balls of described terminal in the described insulating body.Described insulating body is provided with most accommodation holes, and described terminal accommodating is in corresponding described terminal accommodation hole, and described tin ball also is installed in the bottom of described accommodation hole, and connects with described terminal.
Described electric connector generally all is by the surface soldered mode, described terminal is fixedly welded on the described circuit board, thereby described electric connector is electrically connected at described circuit board.Welding is a very important step, and is all strict especially to aspects such as the time requirement of heating-up temperature, each heating period in order to allow described tin ball well melt, and do not note promptly can causing the formation of defective products slightly.As do not test out and to have a strong impact on the normal operation of computer.At present general way is: earlier described electric connector is placed on the described circuit board, then with them together by adding brazier, make described tin ball melted by heat, so that described terminal is welded mutually with weld pad on the described circuit board.But since present described electric connector in since described tin ball be to be fixedly arranged in the described accepting hole, heat is not easy fully to arrive described tin ball surface, makes being heated of described tin ball upper and lower also unbalanced, thereby causes described tin ball not melt well.
Solve the shortcoming that the above tin ball can not fine fusing, industry has this making: as described in being shown in as Chinese patent CN200920056987.3 the lower surface of insulating body as described in accommodation hole one gusset be provided with a plurality of locating pieces, and at least one described locating piece is connected with one of them described locating piece on another terminal accepting groove side, described terminal leans against a described locating piece, enclose by described terminal and two other described locating pieces and to form a receiving space, described tin ball is contained in the described receiving space.So design is when welding, and hot blast can fully contact with described tin ball upper and lower by the gap between described locating piece, has solved the shortcoming that described tin ball can not melt well basically with respect to original design, but has had weak point:
1. as shown in Figure 1, the described tin ball 3 because described guide vane end stop 15 1 sides are conflicted, and also have certain distance apart from adjacent described tin ball 3 in its relative side, and this distance is not fully utilized with described locating piece 14 formed spaces, thereby additionally strengthened the occupied space of described tin ball 3, increase the surface area of described connector, be unfavorable for the development of connector densification.
2. owing to be connected together between the described locating piece on the described insulating body bottom surface, described locating piece part contacts with described tin ball, and another part is connected with another described locating piece.Described tin ball is heated and heat can be passed to described locating piece, can violently raise at described locating piece and the contacted regional temperature of described tin ball, and far away owing to the described tin ball of distance at described locating piece and another contacted zone of described locating piece, temperature is lower than described locating piece and the contacted zone of described tin ball relatively.According to principle of expanding with heat and contracting with cold, the volume of the high more expansion of hot temperature that identical material is subjected to is just big more, described locating piece will be far longer than the zone that described locating piece is connected with another described locating piece, the regional fracture that so will cause described locating piece to be connected with described locating piece with the volume that expands in the contacted zone of described tin ball.
3. be to be housed in two described locating pieces and the space that described terminal enclosed owing to stating the tin ball, and be not provided with described locating piece in the right opposite direction of described terminal.When being heated to melt, described tin ball becomes tin liquor, be subjected to the absorption of described terminal and shift to described terminal, but also be subjected to stopping of described terminal simultaneously, and the described tin liquor of part is owing to be subjected to the power that described terminal front applies, and change moving direction dorsad terminal move, will not shift out the space that described locating piece encloses because described tin liquor is subjected to stopping in the direction that moves dorsad again, so can cause described terminal dry joint, empty weldering etc., even cause described terminal to connect mutually.
4. because described receiving space top is a through hole, and be not provided with the assembly that restriction tin ball moves on excessively above the described tin ball, so, when described tin ball is subjected to upwards power, described tin club upwards pulls out liter in the clear, has had a strong impact on described tin ball and has been positioned at evenness on the described insulating body lower surface.Certainly industry also has way, above described receiving space, be provided with a described block and hinder described tin ball and upwards pull out liter, but because described block is the described tin ball of positive stop, upwards pull out and rise and when hitting described block when described tin ball is stressed, described tin ball and described block buffer time are extremely short, short more according to buffer time, active force is big more principle just, and described tin ball ball will be subjected to very big impact, because described tin ball is stressed big more, cause described tin ball to damage with regard to easier.
Therefore, be necessary to design a kind of new electric connector, to overcome the problems referred to above.
[utility model content]
At the described variety of problems that faces of background technology, the purpose of this utility model is to provide a kind of improvement by locating piece row is established, and saves the receiving space of described tin ball, and helps the electric connector that described tin ball is subjected to thermal balance.
For reaching the above technical purpose, the utility model adopts following technical scheme:
One insulating body, described insulating body up/down perforation has most accommodation holes, convex with in the bottom surface of described insulating body and ranked first locating piece more and to ranked second locating piece more, described first locating piece is adjacent row's described second locating piece to small part and is positioned at that same row is staggered and is provided with at interval, described first locating piece has one first supporting surface, enclosed by described first side and its adjacent row's two described second locating pieces and to form a receiving space, described receiving space is positioned at described accommodation hole below and coupled leading to; Most terminals, each described terminal has a base portion respectively, extends downwards from described base portion to be provided with a weld part, and described base portion correspondence is fixedly arranged in the described accommodation hole, described weld part to small part enters described receiving space, and is positioned at phase the other side of described first supporting surface; Most tin balls, correspondence enters in most described receiving spaces respectively, and is positioned between described weld part and described first supporting surface.
Compare with prior art, the utility model electric connector is by being provided with many rows below described insulating body, and staggeredly among the same row is provided with described first locating piece and described second locating piece, saved the receiving space of described tin ball effectively; And weld part to the small part of described terminal is revealed in outside the described receiving space, reached effectively when welding, hot blast can pass through described first locating piece and the mutual space of described second locating piece, fully touches the surface of described tin ball, and heat can fully be distributed; Moreover, be oppositely arranged by two described first locating pieces, effectively controlled described tin ball and be heated and flow to outside the described receiving space after becoming tin liquor, avoided connecting mutually between adjacent described terminal.
Your juror can all further understanding and understanding can be arranged for ease of, and to elaborate with accompanying drawing in conjunction with the embodiments the purpose of this utility model, shape, structure, feature and effect thereof.
[description of drawings]
Fig. 1 is the local constitutional diagram of known techniques electric connector;
Fig. 2 is the partial exploded view of the utility model electric connector;
Fig. 3 is the partial perspective view of the insulating body of the utility model electric connector;
Fig. 4 is the local constitutional diagram at another visual angle of the utility model electric connector;
Fig. 5 is the partial bottom view of the insulating body of the utility model electric connector;
Fig. 6 is the cutaway view of the part of the utility model electric connector along the A-A direction;
Fig. 7 is the local constitutional diagram of the utility model electric connector;
Fig. 8 is the insulating body of the utility model electric connector and the local constitutional diagram of terminal;
Fig. 9 is provided with the partial perspective view of reinforcement for the insulating body of the utility model electric connector.
The drawing reference numeral explanation of embodiment
10 first 11 second 12 of insulating bodies
First supporting surface, 1,411 second supporting surfaces, 1,412 first stoppers 1421
Second stopper, 1422 conflict inclined-planes, 14121 receiving spaces 15
The second plate face, 232 holding parts, 24 holes 25
[embodiment]
Below in conjunction with the drawings and specific embodiments the utility model electric connector is further elaborated.
Please refer to Fig. 1,2,3, described electric connector comprises: an insulating body 10, be positioned at most terminals 20 of described insulating body 10 inside and the tin ball 30 that supports mutually with described terminal 20.
Please refer to shown in Fig. 1,2,3, described insulating body 10 is a tabular, it is relatively set with one first 11 and 1 second 12, through described first 11 and described second 12 a plurality of accommodation holes 13, be convexly set in and be located in described accommodation hole 13 1 sides on described second 12, and a plurality of first locating pieces 141 of space and a plurality of second locating piece 142, enclose a plurality of receiving spaces 15 of forming, and protrude out a card division 16 forward by described accommodation hole 13 1 inboards by described first locating piece 141 and described second locating piece 142.Described accommodation hole 13 is connected with described receiving space 15, and each described receiving space 15 is enclosed by two described first locating pieces 141 and two described second locating pieces 142 respectively and forms.
Described first locating piece 141 has one first supporting surface 1411 and one second supporting surface 1412 that is oppositely arranged.Described second supporting surface, 1412 parts protrude out forward and form a conflict inclined-plane 14121.Described second locating piece 142 sets in a row on described second 12, and among the same row between per two described second locating pieces 142 row be provided with a described conflict inclined-plane 14121.Among described first supporting surface 1411 and the same row described second locating piece 142 of dual-side be located in described receiving space 15 around, between described first locating piece 141 and described second locating piece 142 space is arranged.Described second locating piece 142 has one first stopper 1421 and second stopper 1422.Described first stopper 1421 is located in a side of described receiving space 15, and described second stopper 1422 be located in adjacent to a side of described receiving space 15.
See also shown in Figure 9, in order to make the intensity that increases described second locating piece 142, when making described second locating piece 142 be subjected to described tin ball 30 extruding, be not easy deformed damaged, all be equipped with a reinforcement 1423 on side, described second locating piece 142 both sides, and be immobilizated on described second 12.And owing to added described reinforcement 1423, the height of described reinforcement 1423 is lower than described second locating piece 142, in injection moulding mold filling process, described reinforcement 1423 fuses with described second locating piece 142, increased whole volume, made that the fillibility of described reinforcement 1423 and described second locating piece 142 is better.
See also shown in Fig. 1,3,4,5, described terminal 20 have a base portion 22, from described base portion 22 extend upward an extension 27, in the end of described extension 27 be provided with a contact site 21, the weld part 23 that extends downwards by described base portion 22 left sides, and the holding part 24 that protrudes out downwards by described base portion 22, described holding part 24 matches with described card division 16, and described terminal 20 is immobilizated in the described accommodation hole 13.The center line of described extension 27 departs from second center line of described contact site 21.Be covered on the volume of the described terminal 20 of described tin ball 30 tops with minimizing, thereby increased the space of described tin ball 30 tops, help when welding the circulation of hot gas.Described weld part 23 is one tabular, and it is respectively equipped with one first plate face 231 and one second plate face 232 relatively.Be provided with a hole 25 by place in the middle of the described weld part 23, through the described first plate face 231 and the described second plate face 232.The not end of described weld part 23 is provided with a guidance part 26 and is connected in the described first plate face 231.
See also shown in Fig. 1,3,4,5,6,8, before group is gone into, described weld part 23 by described terminal 20 enters described accommodation hole 13 from described first 11, and pass described accommodation hole 13 by described weld part 23 and enter described receiving space 15, when the described holding part 24 on described terminal 20 was held on the described card division 16 in the described accommodation hole 13, described terminal 20 was fixed in the described accommodation hole 15.And the described second plate face 232 of the described weld part 23 on the described terminal 20 is resisted against described first supporting surface 1411 of described first locating piece 141, and described weld part 23 protrudes out the bottom surface of described receiving space 15 to small part, support described insulating body 10 with described weld part 23 when welding, the bottom surface that hot blast when allowing described the welding can pass through described receiving space 15 enters described receiving space 15 to the gap on the surface of circuit board.Described guidance part 26 along described terminal 20 enters described receiving space 15 to described tin ball 30 from second 12 top of described insulating body 10, and described tin ball 30 is resisted against in the described hole 25 of described weld part 23.Described tin ball 30 matches with described second supporting surface 1412 by described hole 25, reaches described tin ball 30 is contained in effect in the described receiving space 15.And the bottom surface of described tin ball 30 is located farther from described receiving space 15 compared to the most not end of the described weld part 23 of described terminal 20.And the end face of described tin ball 30 is positioned at the below on described conflict inclined-plane 14121.
In sum, the utility model electric connector has following advantage:
The utility model electric connector is by being provided with many rows below described insulating body 10, and staggeredly among the same row is provided with described first locating piece 141 and described second locating piece 142, saved the described receiving space 15 of described tin ball 30 effectively;
And described weld part 23 to the small part of described terminal 20 is revealed in outside the described receiving space 15, reached effectively when welding, hot blast can be by described first locating piece 141 and the mutual space of described second locating piece 142, fully touch the surface of described tin ball 30, heat can fully be distributed.
Moreover, be oppositely arranged by two described first locating pieces 141, effectively controlled described tin ball 30 and be heated and flow to outside the described receiving space 15 after becoming tin liquor, avoided connecting mutually of 20 of adjacent described terminals.
Above-mentioned explanation is the detailed description at the preferable feasible enforcement of the utility model, but embodiment is not in order to limit patent claim of the present utility model, equal variation of being finished on the technical spirit that all the utility model disclosed or modification change all should belong to claim that the utility model is contained.
Claims (12)
1. an electric connector is characterized in that, comprising:
One insulating body, described insulating body up/down perforation has most accommodation holes, convex with in the bottom surface of described insulating body and ranked first locating piece more and to ranked second locating piece more, described first locating piece is adjacent row's described second locating piece to small part and is positioned at that same row is staggered and is provided with at interval, described first locating piece has one first supporting surface, enclosed by described first side and its adjacent row's two described second locating pieces and to form a receiving space, described receiving space is positioned at described accommodation hole below and coupled leading to;
Most terminals, each described terminal has a base portion respectively, extends downwards from described base portion to be provided with a weld part, and described base portion correspondence is fixedly arranged in the described accommodation hole, described weld part to small part enters described receiving space, and is positioned at phase the other side of described first supporting surface;
Most tin balls, correspondence enters in most described receiving spaces respectively, and is positioned between described weld part and described first supporting surface.
2. electric connector as claimed in claim 1 is characterized in that: all gapped between described first locating piece and described second locating piece.
3. electric connector as claimed in claim 1 is characterized in that: described first supporting surface is provided with a conflict inclined-plane described tin ball of conflicting.
4. electric connector as claimed in claim 3 is characterized in that: described conflict inclined-plane is extended upward near an inboard of described receiving space by described first locating piece and forms, in order to move on the described tin ball of block.
5. electric connector as claimed in claim 1 is characterized in that: described weld part is provided with a hole, and described tin ball portion enters in the described hole.
6. electric connector as claimed in claim 5 is characterized in that: described hole has an opening, and described opening is towards described first locating piece.
7. electric connector as claimed in claim 2 is characterized in that: described second locating piece has an arc-shaped contact part, towards described receiving space.
8. electric connector as claimed in claim 1 is characterized in that: the not end of described weld part is provided with a guiding face.
9. electric connector as claimed in claim 1 is characterized in that: described weld part to small part protrudes out the bottom surface of described receiving space.
10. electric connector as claimed in claim 1 is characterized in that: extended upward an extension from described base portion, be provided with a contact site in the end of described extension.
11. electric connector as claimed in claim 10 is characterized in that: the center line of described contact site and the center line of described extension be not online always together.
12. electric connector as claimed in claim 11 is characterized in that: the center line of described extension is towards the direction skew near described tin ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201867783U CN201674033U (en) | 2010-05-10 | 2010-05-10 | Electric connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201867783U CN201674033U (en) | 2010-05-10 | 2010-05-10 | Electric connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201674033U true CN201674033U (en) | 2010-12-15 |
Family
ID=43331441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201867783U Expired - Lifetime CN201674033U (en) | 2010-05-10 | 2010-05-10 | Electric connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201674033U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281820A (en) * | 2018-01-12 | 2018-07-13 | 番禺得意精密电子工业有限公司 | Electric connector |
| CN112635423A (en) * | 2020-11-30 | 2021-04-09 | 中航光电科技股份有限公司 | BGA connector |
-
2010
- 2010-05-10 CN CN2010201867783U patent/CN201674033U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281820A (en) * | 2018-01-12 | 2018-07-13 | 番禺得意精密电子工业有限公司 | Electric connector |
| CN112635423A (en) * | 2020-11-30 | 2021-04-09 | 中航光电科技股份有限公司 | BGA connector |
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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: 20101215 |