CN201994452U

CN201994452U - Electric connector

Info

Publication number: CN201994452U
Application number: CN2010206443072U
Authority: CN
Inventors: 王永福
Original assignee: Lotes Guangzhou Co Ltd
Current assignee: Lotes Guangzhou Co Ltd
Priority date: 2010-12-02
Filing date: 2010-12-02
Publication date: 2011-09-28
Anticipated expiration: 2020-12-02

Abstract

The utility model discloses an electric connector which comprises an insulating body, a plurality of signal terminals and a grounding lug, wherein the insulating body is provided with a plurality of accommodating holes; the signal terminals are correspondingly accommodated in the accommodating holes one to one respectively; each signal terminal is provided with a base fixed in the corresponding accommodating hole, a contact part is formed at the upper end of the base, and a welding part is formed at the lower end of the base; an insulating layer is coated on the surface of the base of each signal terminal, and a shielding layer is coated outside the insulating layer; and the grounding lug is arranged on the insulating body and is electrically connected with the shielding layer of each signal terminal respectively. In the utility model, the insulating layer and the shielding layer are sequentially arranged on the surface of each of the signal terminals, and the shielding layers are grounded by utilizing the grounding lug, therefore, the signal terminals have the shielding effect, so that a large number of grounding terminals can be omitted to reduce the total number of terminals, thereby reducing the cost of production and effectively being compatible with the design of the spatial arrangement of the existing main board.

Description

Electric connector

[technical field]

The utility model relates to a kind of electric connector, and especially a kind of its terminal itself has the electric connector of shield effectiveness.

[background technology]

At present, in the electric connector such as CPU Socket of the rectangular arrangement of terminal,, generally a plurality of earth terminals are set and realize by correspondence around a signal terminal for reaching the purpose that prevents electromagnetic interference between signal terminal.Along with fast development of computer technology, following core cpu number will be doubled and redoubled, and this just requires to promote the ability that electric connector can Data transmission, therefore must increase considerably numbers of terminals.Thus, increase numbers of terminals and not only can improve production cost, and can cause the electric connector volume to increase, need take bigger space.This electric connector with high-end subnumber be if compatible existing mainboard spatial arrangement design just must increase terminal density, but this reduce terminal pitch from way can increase and produce and the degree-of-difficulty factor of processing.

For addressing these problems, the existing people of industry designs a kind of electric connector, it comprises an insulating body, a plurality of conducting terminal and is located at a plurality of terminal accommodation holes on the described insulating body, described conducting terminal is located in the described terminal accommodation holes, and be provided with a screen in the described terminal accommodation holes, described screen is provided with an insulating barrier.The electric connector of this structure has only the part of described terminal accommodating in described terminal accommodation holes to have shield effectiveness, and still there is crosstalk problem in the described terminal of part that is exposed to outside the described terminal accommodation holes, and effect is desirable not to the utmost.

[utility model content]

The purpose of this utility model is to provide a kind of its terminal itself to have the electric connector of shield effectiveness, can omit a large amount of earth terminals, reduces the total number of terminals order, increases terminal pitch, thereby reduces production costs, effectively compatible existing mainboard spatial arrangement design.

For achieving the above object, the utility model is achieved through the following technical solutions:

A kind of electric connector comprises: an insulating body is provided with a plurality of accepting holes; A plurality of signal terminals, correspondence is contained in the described accepting hole respectively, and each described signal terminal has a base portion and is fixed in the described accepting hole, is formed with a contact site from described base portion upper end, and is formed with a weld part from described base portion lower end; Described base surface in each described signal terminal is coated with an insulating barrier; Drape over one's shoulders in described insulating barrier outside and to be provided with a screen; One ground strip is located on the described insulating body, and described ground strip electrically conducts with the described screen of each described signal terminal respectively.

As the further improvement of such scheme, and described insulating barrier to small part is revealed in outside the described screen.

Further, described base portion comprises an elastic arm, a fixed part and a linking arm, described fixed part is immobilizated in the described accepting hole, described fixed part upper end is connected with described elastic arm lower end, described fixed part lower end is connected with described linking arm upper end, described elastic arm upper end links to each other with described contact site and described elastic arm stretches out outside the described accepting hole, and described linking arm lower end links to each other with described weld part.

Described insulating barrier and described screen further coat described elastic arm, and described screen is positioned at described insulating barrier outside, and described insulating barrier upper end is revealed in outside the described screen.

Described insulating barrier and described screen coat described linking arm, and described screen is positioned at described insulating barrier outside, and described insulating barrier lower end is revealed in outside the described screen.

Compared with prior art, electric connector of the present utility model is by setting gradually described insulating barrier and described screen on described signal terminal surface, and pass through described ground strip with described shielding layer grounding, make described signal terminal itself have function of shielding, thereby can omit a large amount of earth terminals, and reduce the total number of terminals order, increase terminal pitch, thereby reduce production costs effectively compatible existing mainboard spatial arrangement design.

In addition, described insulating barrier and described screen all extend to the part beyond the described base portion, can increase the zone of described signal terminal shielding, make the effect of its anti-electromagnetic interference more excellent; And outside two ends are revealed in about the described insulating barrier, make and form two sections safe distances between described screen and described signal terminal, can effectively prevent short circuit between described screen and described signal terminal, the security performance when improving the electric connector use increases the service life.

[description of drawings]

Fig. 1 is the stereogram of the utility model electric connector;

Fig. 2 is the exploded view of the utility model electric connector;

Fig. 3 is the structural representation that the signal terminal of the utility model electric connector is connected with ground strip;

Fig. 4 is the A portion enlarged diagram among Fig. 3;

Fig. 5 is the B portion enlarged diagram among Fig. 3;

Fig. 6 is the C portion enlarged diagram among Fig. 3;

Fig. 7 is the stereogram of the signal terminal of the utility model electric connector.

The drawing reference numeral explanation of embodiment:

Insulating body 1 signal terminal 2 ground strips 3

Earth terminal 4 accepting holes 10 base portions 21

Contact site 22 weld parts 23 insulating barriers 24

Screen 25 elastic arms 26 fixed parts 27

Linking arm 28 grounding elastic parts 31 insulating barriers upper end 241

242 projections, 251 inclined-planes 252, insulating barrier lower end

[embodiment]

For ease of better understanding the purpose of this utility model, structure, feature and effect etc., existing the utility model is described in further detail with embodiment in conjunction with the accompanying drawings.

Referring to figs. 1 through Fig. 2, electric connector of the present utility model comprises an insulating body 1, is provided with a plurality of accepting holes 10; A plurality of signal terminals 2, correspondence is contained in the described accepting hole 10 respectively; One ground strip 3 is located on the described insulating body 1.

With reference to Fig. 2 and Fig. 7, each described signal terminal 2 has a base portion 21 and is fixed in the described accepting hole 10, is formed with a contact site 22 from described base portion 21 upper ends, and is formed with a weld part 23 from described base portion 21 lower ends.Described base portion 21 comprises an elastic arm 26, a fixed part 27 and a linking arm 28, described fixed part 27 is immobilizated in the described accepting hole 10, described fixed part 27 upper ends are connected with described elastic arm 26 lower ends, described fixed part 27 lower ends be connected with described linking arm 28 upper ends, described elastic arm 26 upper ends link to each other with described contact site 22 and described elastic arm 26 stretches out outside the described accepting hole 10, and described linking arm 28 lower ends link to each other with described weld part 23.

With reference to Fig. 5 to Fig. 7, described base portion 21 surfaces are coated with an insulating barrier 24, and described insulating barrier 24 appearances are draped over one's shoulders and are provided with a screen 25, and described insulating barrier 24 to small part is revealed in outside the described screen 25.

As Fig. 3 and Fig. 4, described elastic arm 26 two ends connect described contact site 22 and described fixed part 27 respectively, described insulating barrier 24 and described screen 25 further coat described elastic arm 26, and described screen 25 is positioned at described insulating barrier 24 appearances, and insulating barrier upper end 241 is revealed in outside the described screen 25.

With reference to Fig. 3 and Fig. 5, described linking arm 28 extends to form from described fixed part 27 lower ends, described insulating barrier 24 and described screen 25 coats described linking arm 28, and described screen 25 is positioned at described insulating barrier 24 appearances, and insulating barrier lower end 242 is revealed in outside the described screen 25.

As Fig. 2, Fig. 3 and shown in Figure 7, described ground strip 3 electrically conducts with the described screen 25 of each described signal terminal 2 respectively.Bending is extended with a plurality of grounding elastic parts 31 on the described ground strip 3, and described grounding elastic part 31 electrically connects corresponding to described base portion 21 and with described screen 25 on the described base portion 21.The utility model electric connector also comprises at least one earth terminal 4, as preferred embodiment, only needs a described earth terminal 4 just enough, also is grounded by described grounding elastic part 31 conductings between described earth terminal 4 and the described ground strip 3.

With reference to Fig. 3 and Fig. 6, described base portion 21 also is provided with a projection 251, and described projection 251 contacts with described grounding elastic part 31, and described projection 251 has an inclined-plane 252 overlap joint that matches with described grounding elastic part 31.Certainly, also can realize described screen 25 ground connection with described ground strip 3 electric connections by a shell fragment (not shown) is set at described base portion 21.

In addition, described weld part 23 corresponding fixings have a tin ball (not shown), are used to weld described signal terminal 2 to mainboard (not shown).

Described signal terminal 2 its surface treatment process of the utility model electric connector are as follows:

1. get the material terminal, electroplate one deck nickel in described material terminal surfaces, then at described contact site 22 electrogilding layers, at described weld part 23 electrotinning layers, this moment, described material terminal can be used as the described signal terminal 2 with conduction function;

2. on the basis of the above, adopt fluidisation coating or other process to increase described insulating barrier 24 in described fixed part 27, described elastic arm 26 and described linking arm 28 appearances of described signal terminal 2, wherein said insulating barrier 24 can use various non-conductive insulating material;

3. last, adopt vacuum plating or coated technique increase one deck conductor or semi-conducting material to form described screen 25 on the surface of described insulating barrier 24, add man-hour, the length of described screen 25 is slightly less than the length of described insulating barrier 24, makes described insulating barrier upper end 241 and described insulating barrier lower end 242 be revealed in outside the described screen 25.

After described signal terminal 2 surface treatments are finished, adopt Insert-molding (mold insert injection moulding) mode to implant plastic cement described ground strip 3 and be in the described insulator 1, realize the assembling process of described ground strip 3, described signal terminal 2 and described insulator 1.

The beneficial effects of the utility model are:

1. because described signal terminal 2 surfaces have described insulating barrier 24 and described screen 25, make described signal terminal 2 itself have the effect of shielding, thereby only need described screen 25 with described signal terminal 2 unified with described ground strip 3 conductings and ground connection after, just can effectively prevent the cross-talk between each described signal terminal 2, only need a described earth terminal 4 to get final product in the whole electric connector, reduced the total number of terminals order in a large number, increased terminal pitch, thereby can reduce production costs and simplify manufacture craft, effectively compatible existing mainboard spatial arrangement design meanwhile can be satisfied ever-increasing high frequency demand.

Since described insulating barrier upper end 241 and described insulating barrier lower end 242 be revealed in outside the described screen 25, make and isolate by additional one section described insulating barrier 24 between described screen 25 and the described signal terminal 2, two ends have formed one section safety contact distance and one section safety welding distance respectively up and down, can effectively prevent described screen 25 and described signal terminal 2 short circuits, improve the security performance of whole electric connector.

3. owing to also be coated with described insulating barrier 24 on described elastic arm 26 and the described linking arm 28, and has a described screen 25, thereby strengthened the shielding area of electric connector, promptly, the part that described signal terminal 2 is contained in the described accepting hole 10 has function of shielding, and stretch out described accepting hole 10 outer parts and also can prevent to each other electromagnetic interference, the shield effectiveness of whole electric connector is more reliable.

4. it is in the described insulator 1 that described ground strip 3 employing Insert-molding modes are implanted plastic cement, realizes described screen 25 ground connection, not only saved the cost of assembling, and assembling is more firm.

5. described projection 251 cooperates overlap joint by described inclined-plane 252 with described grounding elastic part 31, makes to contact more reliably between described signal terminal 2 and the described ground strip 3, realizes that effectively described screen 25 ground connection are to bring into play its function of shielding.

Below only be the explanation of the preferred embodiment of the utility model, non-so limit to claim of the present utility model, so the equivalence techniques that all this creation of utilization specifications and diagramatic content are done changes, and all is contained in the claim of the present utility model.

Claims

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

One insulating body is provided with a plurality of accepting holes;

A plurality of signal terminals, correspondence is contained in the described accepting hole respectively, and each described signal terminal has a base portion and is fixed in the described accepting hole, is formed with a contact site from described base portion upper end, and is formed with a weld part from described base portion lower end;

Described base surface in each described signal terminal is coated with an insulating barrier;

Drape over one's shoulders in described insulating barrier outside and to be provided with a screen;

One ground strip is located on the described insulating body, and described ground strip electrically conducts with the described screen of each described signal terminal respectively.

2. a kind of electric connector as claimed in claim 1 is characterized in that: described insulating barrier to small part is revealed in outside the described screen.

3. a kind of electric connector as claimed in claim 1, it is characterized in that: described base portion comprises an elastic arm, a fixed part and a linking arm, described fixed part is immobilizated in the described accepting hole, described fixed part upper end is connected with described elastic arm lower end, described fixed part lower end is connected with described linking arm upper end, described elastic arm upper end links to each other with described contact site and described elastic arm stretches out outside the described accepting hole, and described linking arm lower end links to each other with described weld part.

4. a kind of electric connector as claimed in claim 3 is characterized in that: described insulating barrier and described screen further coat described elastic arm, and described screen is positioned at described insulating barrier outside, and described insulating barrier upper end is revealed in outside the described screen.

5. a kind of electric connector as claimed in claim 3 is characterized in that: described insulating barrier and described screen coat described linking arm, and described screen is positioned at described insulating barrier outside, and described insulating barrier lower end is revealed in outside the described screen.

6. a kind of electric connector as claimed in claim 1 is characterized in that: also comprise at least one earth terminal, described earth terminal and described ground strip conducting and ground connection.

7. a kind of electric connector as claimed in claim 1 is characterized in that: bending is extended with a plurality of grounding elastic parts on the described ground strip, and described grounding elastic part electrically connects corresponding to described base portion and with described screen on the described base portion.

8. a kind of electric connector as claimed in claim 7 is characterized in that: described base portion is provided with a projection, and described projection contacts with described grounding elastic part.

9. a kind of electric connector as claimed in claim 8 is characterized in that: described projection has the inclined-plane overlap joint that matches with described grounding elastic part.

10. a kind of electric connector as claimed in claim 1 is characterized in that: described base portion is provided with a shell fragment and described ground strip electrically connects.