CN201741944U - Electric connector - Google Patents
Electric connector Download PDFInfo
- Publication number
- CN201741944U CN201741944U CN2010202650815U CN201020265081U CN201741944U CN 201741944 U CN201741944 U CN 201741944U CN 2010202650815 U CN2010202650815 U CN 2010202650815U CN 201020265081 U CN201020265081 U CN 201020265081U CN 201741944 U CN201741944 U CN 201741944U
- Authority
- CN
- China
- Prior art keywords
- mentioned
- electric connector
- circuit board
- printed circuit
- metal shell
- 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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Abstract
The utility model provides an electric connector which comprises a metal shell and a printed circuit board fixed in the metal shell, wherein the printed circuit board comprises a lead part, the lead part comprises a surface and two opposite side surfaces connected with the surface, a plurality of signal leads and two grounding leads positioned outside the signal leads are arranged on the surface, gaps are arranged respectively between the two grounding leads and the corresponding side surfaces, the metal shell is not contacted with a grounding conductor, and the lead part on the side surfaces or at the gaps is fixed for fixing the printed circuit board. The electric connector can avoid burning the printed circuit board by high voltage in lightning weather, and has higher reliability.
Description
[technical field]
The utility model relates to a kind of electric connector, relates in particular to a kind of electric connector that has printed circuit board.
[background technology]
Because of printed circuit board has all kinds of electronic devices and components of connection and electric effect in electronic equipment, be widely used in small form factor pluggable (SFP, Small Form-factor Pluggable) (Universal Serial Bus is USB) in each type electric connector such as electric connector, coaxial connector for electric connector, USB.
See also Fig. 1 and Fig. 2, Fig. 1 is a kind of decomposing schematic representation of prior art SFP electric connector, and Fig. 2 is the enlarged drawing of the printed circuit board of SFP electric connector shown in Figure 1.Described SFP is electrically connected 1 and comprises a metal shell (not label) and a printed circuit board 10 that is fixed in the above-mentioned metal shell.Above-mentioned printed circuit board 10 is roughly a rectangle, and its limit, two opposite sides is respectively equipped with a recess 101.
Above-mentioned metal shell comprises a upper shell 11 and a lower house 12.Be respectively equipped with a projection 110 corresponding with above-mentioned recess 101 on the two opposite side walls of described upper shell 11, above-mentioned protruding 110 cooperate with above-mentioned recess 101 and to prevent that printed circuit board 10 along continuous straight runs from moving.Be respectively equipped with two protuberances 120 on the two opposite side walls of described lower house 12, the both sides of the edge that described protuberance 120 compresses printed circuit board 10 prevent that printed circuit board 10 from vertically moving.
Above-mentioned printed circuit board 10 comprises that a plurality of and the contact pad 102 that butt connector is pegged graft, a plurality of pads 103 with cable welding are connected the wire portion (not label) of above-mentioned contact pad 102 and pad 103 with one.Above-mentioned wire portion is by forming with the part copper in the middle of etching away on the circuit board of Copper Foil at whole piece.After the etching, the copper at edge, both sides that is positioned at printed circuit board 10 is directly as earth lead 105, and the copper of mid portion is as signal conductor 106.
Because above-mentioned SFP electric connector 1 is to adopt fixedly printed circuit board 10 of metal shell, contacts so the earth lead 105 of metal shell and printed circuit board 10 both sides of the edge certainly will have.Yet, when lightning weather takes place, the voltage of lightning is up to 100,000,000 to 1,000,000,000 volts, current strength reaches the training of 20,000 to 4 Wan An, this forceful electric power is pressed and heavy current can be delivered to printed circuit board 10 by above-mentioned metal shell, thereby burn out above-mentioned printed circuit board 10, therefore the reliability of above-mentioned SFP electric connector 1 is lower.It is not only SFP electric connector 1, any other adopts the directly fixing electric connector of printed circuit board of metal shell, as GigaBit Interface Converter (gigabit interface converter, GBIC), (10Gigabit Small FormFactor Pluggable, XFP) may all there be the lower technical problem of above-mentioned reliability in grade to the 10Gbps small form factor pluggable.
[utility model content]
In order to solve the lower technical problem of prior art electric connector reliability, be necessary the electric connector that provides a kind of reliability higher.
The invention provides a kind of electric connector, it comprises that a metal shell and is fixed in the printed circuit board in the above-mentioned metal shell.Above-mentioned printed circuit board comprises a wire portion, and above-mentioned wire portion comprises that a surface is connected two opposite flanks on above-mentioned surface with one, and above-mentioned surface is provided with many signal conductor and is positioned at two earth leads in the signal conductor outside.Described two earth leads have a gap respectively with between the corresponding described side, and described metal shell does not contact with earthing conductor, and the wire portion by fixing described side or gap location fixes above-mentioned printed circuit board.
Compared with prior art, above-mentioned two earthing conductors of the printed circuit board of electric connector of the present utility model have a gap d respectively with between the corresponding side, touch metal shell in the time of can avoiding being fixed in above-mentioned metal shell fully, thereby high voltage and high electric current are delivered to described printed circuit board by above-mentioned metal shell when avoiding lightning weather, therefore the reliability of above-mentioned printed circuit board is higher, and then the reliability of electric connector of the present utility model is higher.
[description of drawings]
Fig. 1 is a kind of decomposing schematic representation of prior art SFP electric connector.
Fig. 2 is the enlarged drawing of the printed circuit board of SFP electric connector shown in Figure 1.
Fig. 3 is the decomposing schematic representation of SFP electric connector of the present invention.
Fig. 4 is the enlarged drawing of the printed circuit board of SFP electric connector shown in Figure 3.
[embodiment]
See also Fig. 3 and Fig. 4, Fig. 3 is the decomposing schematic representation of SFP electric connector of the present invention, and Fig. 4 is the enlarged drawing of the printed circuit board of SFP electric connector shown in Figure 3.Above-mentioned SFP electric connector 2 comprises a metal shell (not label) and a printed circuit board 20 that is fixed in the described metal-back.The material of above-mentioned metal shell can be kirsite nickel plating.Above-mentioned printed circuit board 20 comprises that a plate portion of pegging graft with butt connector 21, is connected the wire portion 23 of above-mentioned plate portion and weld part with the weld part 22 that cable welds with one.
Described plate portion 21 comprises a plurality of signalling contact pads 210 and two earthing contact pads 211 that are positioned at described signalling contact pad 210 outsides.It is right that adjacent two signalling contact pads 210 constitute a differential signal, is used for differential signal transmission.The right differential impedance of above-mentioned differential signal is about 83 ohm.Described weld part 22 comprises and is used for the many to pad 220 of differential signal transmission.The differential impedance of above-mentioned a pair of pad 220 is about 100 ohm.Described wire portion 23 comprises that a surface (not label) is connected the two relative side 230 on above-mentioned surface with one, and above-mentioned surface is provided with many signal conductor 231 and is positioned at two earth leads 232 in signal conductor 231 outsides.Described earth lead 232 is used to connect earthing contact pad 211.Described signal conductor 231 is used to connect signalling contact pad 210 and pad 220.
The two relative side 230 of above-mentioned wire portion 23 is respectively equipped with a recess 235.Described two earth leads 232 have a gap d respectively and between the side 230 of above-mentioned wire portion 23, the described 0.2 millimeter≤d in gap≤1.5 millimeters, and the best is 0.5 millimeter.Described two earth leads 232 also also have above-mentioned gap d respectively and between three sides (not label) at recess 235 places.
The metal shell of above-mentioned SFP electric connector 2 comprises a upper shell 31 and a lower house that combines with upper shell 32.Be respectively equipped with a projection 310 corresponding with above-mentioned recess 235 on the two opposite side walls of described upper shell 31, above-mentioned protruding 310 cooperate with above-mentioned recess 235 and to prevent that printed circuit board 20 along continuous straight runs from moving.Be respectively equipped with two protuberances 320 on the two opposite side walls of described lower house 32, the wire portion 23 that described protuberance 320 compresses the gap d place prevents that printed circuit board 20 from vertically moving.
The signal conductor 231 of above-mentioned wire portion 23 comprises a gradual change portion 236.The width of described gradual change portion 236 broadens gradually along the direction of pad 220 to signalling contact pad 210, makes the differential impedance of a pair of signal conductor 231 be reduced to about 83 ohm gradually by about 100 ohm.
Compared with prior art, above-mentioned two earthing conductors 232 of the printed circuit board 20 of the utility model SFP electric connector 2 have a gap d respectively with between the corresponding side 230, touch metal shell in the time of can avoiding being fixed in above-mentioned metal shell fully, thereby high voltage and high electric current are delivered to described printed circuit board 20 by above-mentioned metal shell when avoiding lightning weather, therefore the reliability of above-mentioned printed circuit board 20 is higher, and then the reliability of SFP electric connector 2 of the present utility model is higher.
In addition, the signal conductor 231 of above-mentioned printed circuit board 20 comprises a gradual change portion 236, make the differential impedance of signal conductor 231 be reduced to the differential impedance of signalling contact pad 231 gradually, cause return loss, improve effectiveness to avoid the differential impedance sudden change in the signals transmission.
It is described that the utility model is not limited to the foregoing description, also can have other numerous variations modes, as: the utility model is not limited to SFP electric connector 2, is applicable to the fixedly electric connector of printed circuit board of any direct employing metal shell, as GBIC, XFP electric connector etc.; The differential impedance of above-mentioned signal conductor 231 also is not limited to be reduced to 83 ohm gradually by 100 ohm, can change according to the actual requirements.
Claims (8)
1. electric connector, it comprises that a metal shell and is fixed in the printed circuit board in the above-mentioned metal shell, above-mentioned printed circuit board comprises a wire portion, above-mentioned wire portion comprises that a surface is connected two opposite flanks on above-mentioned surface with one, above-mentioned surface is provided with many signal conductor and is positioned at two earth leads in the signal conductor outside, it is characterized in that: described two earth leads have a gap respectively with between the corresponding described side, described metal shell does not contact with earthing conductor, fixes above-mentioned printed circuit board by the wire portion of fixing described side or gap location.
2. electric connector as claimed in claim 1 is characterized in that: above-mentioned gap is greater than or equal to 0.2 millimeter, and is less than or equal to 1.5 millimeters.
3. electric connector as claimed in claim 2 is characterized in that: above-mentioned gap equals 0.5 millimeter.
4. electric connector as claimed in claim 2, it is characterized in that: above-mentioned two relative side is respectively equipped with a recess, above-mentioned metal shell comprises a upper shell and a lower house that combines with upper shell, be respectively equipped with a projection that cooperates with above-mentioned recess on the two opposite side walls of described upper shell, be respectively equipped with two protuberances on the two opposite side walls of described lower house, described protuberance compresses the wire portion of gap location.
5. electric connector as claimed in claim 4 is characterized in that: described two earth leads have above-mentioned gap respectively and between three sides of indent.
6. electric connector as claimed in claim 5 is characterized in that: above-mentioned printed circuit board further comprises a plate portion and a weld part, described wire portion connector above-mentioned plate portion and above-mentioned weld part.
7. electric connector as claimed in claim 6 is characterized in that: above-mentioned signal conductor comprises a gradual change portion, and the width of described gradual change portion broadens gradually along the direction of weld part to plate portion.
8. electric connector as claimed in claim 1 is characterized in that: described electric connector is SFP electric connector, GBIC or XFP electric connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202650815U CN201741944U (en) | 2010-07-20 | 2010-07-20 | Electric connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202650815U CN201741944U (en) | 2010-07-20 | 2010-07-20 | Electric connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201741944U true CN201741944U (en) | 2011-02-09 |
Family
ID=43557221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202650815U Expired - Fee Related CN201741944U (en) | 2010-07-20 | 2010-07-20 | Electric connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201741944U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846251A (en) * | 2015-01-13 | 2016-08-10 | 至良科技股份有限公司 | Circuit board for electric connector |
| CN105990764A (en) * | 2015-01-29 | 2016-10-05 | 泰科电子(上海)有限公司 | Connector |
-
2010
- 2010-07-20 CN CN2010202650815U patent/CN201741944U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846251A (en) * | 2015-01-13 | 2016-08-10 | 至良科技股份有限公司 | Circuit board for electric connector |
| CN105990764A (en) * | 2015-01-29 | 2016-10-05 | 泰科电子(上海)有限公司 | Connector |
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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: 20110209 Termination date: 20180720 |