CN202997129U

CN202997129U - An electric connector

Info

Publication number: CN202997129U
Application number: CN 201220654146
Authority: CN
Inventors: 朱德祥
Original assignee: Lotes Guangzhou Co Ltd
Current assignee: Lotes Guangzhou Co Ltd
Priority date: 2012-12-03
Filing date: 2012-12-03
Publication date: 2013-06-12
Anticipated expiration: 2022-12-03

Abstract

Provided is an electric connector used for connecting a CPU and a circuit board. The electric connector comprises a body, multiple terminals, first connecting portions, second connecting portions, and multiple solder balls. Multiple containing grooves pass through the body. The multiple terminals are correspondingly arranged in the containing grooves. Each terminal is equipped with a substrate which is fixed in cooperation with a containing groove. The first connecting portion is bent sidewisely and extended from a position close to the bottom of the substrate. A soldering portion equipped with a holding hole is extended downwardly from the first connecting portion. The second connecting portion is bent and extended from a position close to the top of the substrate. And the extending direction is opposite to that of the first connecting portion. A material connecting portion fixed in cooperation with a containing groove is extended upwardly from the end of the second connecting portion. The multiple solder balls are fixed by the cooperation of the holding holes and the containing grooves and just contact the lower edges of the holding holes. The terminals are fixed by double fixing structures of the cooperating fixing between the substrates and the containing grooves and the cooperating fixing between the material connecting portions and the containing grooves. Therefore, fixing area is substantially enlarged and the four-direction movement of the terminals is limited so that generation of bad contact is reduced effectively. Because the solder balls just contact the lower edges of the holding holes, the contact between the solder balls and the terminals is decreased and soldering flux is prevented from spreading to the terminals excessively. As a result, the uniform diffusion of the soldering flux is guaranteed and thus soldering quality is enhanced.

Description

Electric connector

Technical field

The utility model relates to a kind of electric connector, espespecially a kind of electric connector for connecting CPU and circuit board.

Background technology

A kind of electric connector as disclosed in Fig. 1, it comprises a body a, described body a vertical direction is provided with a plurality of through hole a1; A plurality of terminal b, correspondence is located at described through hole a1 respectively; Each described terminal b has a substrate b1, bends downwards in described substrate b1 lower end and extends a weld part b2, and described weld part b2 is provided with a holding hole b3; One tin ball c is held between described through hole a1 and described holding hole b3, and all contacts with the upper lower edge of described holding hole b3.

There is following point in this kind electric connector when practical application: only depend on described substrate b1 to coordinate with described through hole a1, it is less that it is used for fixing area, and described terminal b easily rocks and causes loose contact; Described tin ball c all contacts with the upper lower edge of described holding hole b3, can cause scaling powder too much along the amount of described terminal b diffusion, be diffused into the corresponding minimizing of amount at other position of described tin ball c, scaling powder spreads on described tin ball c and insufficient or inhomogeneously can affect welding effect, easily causes empty weldering.

Therefore, be necessary to design a kind of new electric connector to overcome defects.

Summary of the invention

For the problem that background technology faces, the purpose of this utility model is to provide a kind of energy to stablize holding terminals and can makes scaling powder evenly spread, reduce the electric connector of empty weldering.

To achieve these goals, the utility model electric connector comprises: a body, and it has provided a plurality of accepting grooves; A plurality of terminals, correspondence is located at described accepting groove respectively; Each described terminal has a substrate, and described substrate and described accepting groove are fixed; One first connecting portion extends to bending near the position side of lower end from described substrate, and described the first connecting portion is to downward-extension one weld part, and described weld part is provided with a holding hole; One second connecting portion extends near the position bending of upper end from described substrate, and bearing of trend is opposite with the bearing of trend of described the first connecting portion, and described the second connecting portion end extends upward a material section of company and described accepting groove is fixed; A plurality of tin balls are fixed by described holding hole and described accepting groove, and only contact with the lower edge of described holding hole.

Further, described the second connecting portion end is fixed to downward-extension one holding parts and described accepting groove; Described weld part lower end is bent to form a guidance part to the direction away from described tin ball; Described even material section and described holding parts in the vertical direction stagger, the described more close described substrate of material section's in the vertical direction that connects; Described weld part has the surface near described tin ball, and the center of described tin ball is to the thickness sum of the distance on described surface and the described weld part radius less than described tin ball; A recess is upwards offered in the position of contiguous described the first connecting portion on described substrate; The shape of described holding hole is combined into by the curve of many different radians, and the lower end of described holding hole is wider than the upper end; A side near described substrate in material section of described company is provided with continuous recess and protuberance.

Compared with prior art, terminal of the present utility model adopts described substrate, describedly connects the dual fixed structure that material section is fixed with described accepting groove respectively, increase fixed-area, and limited the movement of described terminal on four direction, effectively reduced the generation of loose contact.And described tin ball only contacts the lower edge of described holding hole, has reduced contacting of described tin ball and described terminal, avoids too much scaling powder to diffuse to terminal, guarantees the even diffusion of scaling powder, thereby improves welding quality.

For ease of understanding and the understanding that all can have the purpose of this utility model, shape, structure, feature and effect thereof, now elaborate with accompanying drawing in conjunction with the embodiments.

[description of drawings]

Fig. 1 is the schematic diagram of prior art;

Fig. 2 is the cutaway view of the utility model three-dimensional exploded view;

Fig. 3 is the cutaway view of Fig. 2 vertical view;

Fig. 4 is the cutaway view of Fig. 2 rearview;

Fig. 5 is the left view of Fig. 2 terminal.

The drawing reference numeral of embodiment:

Body 10	Accepting groove 11
		The first conduit 111	The second conduit 112
Terminal 20	Substrate 21
		Contact site 22	The first connecting portion 23
Weld part 24	Holding hole 241
		Guidance part 242	Recess 25
The second connecting portion 26	Material section 27 of company
		Protuberance
271	Recess 272
		Holding parts 28	Tin ball 30

[embodiment]

Below in conjunction with the drawings and specific embodiments, the utility model electric connector is explained.

Please refer to Fig. 1 to Fig. 3, be a preferred embodiment of the utility model electric connector, it comprises: a body 10, and it has provided a plurality of accepting grooves 11; A plurality of terminals 20, correspondence is located at described accepting groove 11 respectively; A plurality of tin balls 30 are fixed by described terminal 20 and described accepting groove 11 respectively.

please refer to Fig. 3 to Fig. 5, described accepting groove 11 has orthogonal one first conduit 111 and one second conduit 112 of offering along its inwall, and each described terminal 20 has a substrate 21, and described substrate 21 is fixed with described the first conduit 111, one contact site 22, upwards bending extends to form from described substrate 21 upper ends, one first connecting portion 23, extend perpendicular to described substrate 21 side direction bendings near the position of lower end from described substrate 21, described the first connecting portion 23 is to downward-extension one weld part 24, described weld part 24 is provided with a holding hole 241, the shape of described holding hole 241 is combined into by the curve of many different radians, and the lower end of described holding hole 241 is wider than the upper end, and a recess 25 is upwards offered in the position of contiguous described the first connecting portion 23 on described substrate 21, one second connecting portion 26 extends perpendicular to described substrate 21 bendings near the position of upper end from described substrate 21, and bearing of trend is opposite with the bearing of trend of described the first connecting portion 23, described the second connecting portion 26 ends extend upward a material section 27 of company, to downward-extension one holding parts 28, the described material section 27 and described holding parts 28 and described the second conduit 112 of connecting is fixed, a side near described substrate 21 in material section 27 of described company is provided with continuous recess 272 and protuberance 271, described even material section 27 and described holding parts 28 in the vertical directions stagger, the described more close described substrate 21 of material section's 27 in the vertical directions that connects, to increase in the horizontal direction the described torsion arm of force that connects between material section 27 and described holding parts 28, thereby strengthen preventing in the horizontal direction the effect of described terminal 20 torsions.

A plurality of described tin balls 30 are fixed by described holding hole 241 and described accepting groove 11 respectively, and only the lower edge with described holding hole 241 contacts, described weld part 24 lower ends are bent to form a guidance part 242 to the direction away from described tin ball 30, described weld part 24 has the surface near described tin ball 30, and the center of described tin ball 30 is to the thickness H sum of the distance L on described surface and described weld part 24 radius R less than described tin ball 30.

During assembling, with described substrate 21 corresponding inserted in described the first conduit 111, then described even material section 27 and described holding parts 28 corresponding inserted install to be fixed with described accepting groove 11 by described holding hole 241 along described guidance part respectively with described tin ball 30 in described the second conduit 112.

In sum, the utility model electric connector has following beneficial effect:

1. the utility model adopts the fixing described terminal 20 of mode that described substrate 21 and material section 27 of described company, described holding parts 28 coordinate with described accepting groove 11 jointly, enlarged the area that coordinates of described terminal 20 and described accepting groove 11, and because material section 27 of described company, described holding parts 28 form angles with described substrate 21, make the displacement of described terminal 20 in each orientation all be restricted, fixing more firm, minimizing is rocked, and comes in contact bad probability thereby reduce.

2. because 30, described tin ball contacts with described holding hole 241 lower edges, reduced contacting of described tin ball 30 and described terminal 20, avoid too much scaling powder to diffuse to described terminal 20, guarantee the even diffusion of scaling powder, thereby improve welding quality.

3. described weld part 24 lower ends are bent to form a guidance part 242 to the direction away from described tin ball 30, make described tin ball 30 when mounted more smoothly steadily, avoid the accidental injury to described tin ball 30.

4. L+H＜R in the utility model, make 30 times endvertexs of described tin ball (namely and the position of external circuit welding) to the distance between the contact point of described tin ball 30 and described holding hole 241 shorter than in known techniques, thereby shortened the time that scaling powder spreads in this segment distance, improve welding efficiency, and reduced the oxidized risk of described tin ball 30, thereby improved the welding yield.

5. a recess 25 is upwards offered in the position of contiguous described the first connecting portion 23 on described substrate 21, has extended the tin liquor after the fusing to the path that described substrate 21 spreads, and effectively avoids climbing tin.

Above-mentioned explanation is the detailed description for the better possible embodiments of the utility model, but above-described embodiment is not to limit patent claim of the present utility model, the equal variation of completing under the technical spirit that all the utility model disclose or modification change all should belong to the scope of the claims that the utility model is contained.

Claims

1. an electric connector, is characterized in that, comprising:

One body, it has provided a plurality of accepting grooves; A plurality of terminals, correspondence is located at described accepting groove respectively;

Each described terminal has a substrate, and described substrate and described accepting groove are fixed; One first connecting portion extends to bending from described substrate lower end side, and described the first connecting portion is to downward-extension one weld part, and described weld part is provided with a holding hole; One second connecting portion extends near the position bending of upper end from described substrate, and bearing of trend is opposite with the bearing of trend of described the first connecting portion, and described the second connecting portion end extends upward a material section of company and described accepting groove is fixed;

A plurality of tin balls are fixed by described holding hole and described accepting groove, and only contact with the lower edge of described holding hole.

2. electric connector as claimed in claim 1, it is characterized in that: described the second connecting portion end is fixed to downward-extension one holding parts and described accepting groove.

3. electric connector as claimed in claim 2 is characterized in that: described weld part lower end is bent to form a guidance part to the direction away from described tin ball.

4. electric connector as claimed in claim 3 is characterized in that: the described material section that connects staggers with described holding parts in the vertical direction, the more close described substrate of described company's material section's in the vertical direction.

5. electric connector as claimed in claim 4 is characterized in that: described weld part has the surface near described tin ball, and the center of described tin ball is to the thickness sum of the distance on described surface and the described weld part radius less than described tin ball.

6. electric connector as claimed in claim 5 is characterized in that: a recess is upwards offered in the position of contiguous described the first connecting portion on described substrate.

7. electric connector as claimed in claim 6, it is characterized in that: the shape of described holding hole is combined into by the curve of many different radians, and the lower end of described holding hole is wider than the upper end.

8. electric connector as claimed in claim 7 is characterized in that: describedly connect that in material section, the side near described substrate is provided with continuous recess and protuberance.