This patent application claims priority of a Chinese Patent Application No. 202010567796.4, filed on Jun. 19, 2020 and titled “BACKPLANE CONNECTOR ASSEMBLY”, and a Chinese Patent Application No. 202010709180.6, filed on Jul. 22, 2020 and titled “BACKPLANE CONNECTOR”, the entire content of which is incorporated herein by reference.
The present disclosure relates to a backplane connector which belongs to a technical field of connectors.
Existing backplane connectors usually include an insulating housing and a plurality of terminal modules assembled to the insulating housing. Each terminal module includes an insulating frame, a plurality of conductive terminals insert-molded with the insulating frame, and a metal shield mounted to at least one side of the insulating frame. The conductive terminals usually include multiple pairs of differential signal terminals, a first ground terminal located on one side of each pair of differential signal terminals, and a second ground terminal located on the other side of each pair of differential signal terminals. The first ground terminal, the second ground terminal and the metal shield provide shielding for the differential signal terminals in order to reduce signal crosstalk and improve the quality of signal transmission.
However, with the continuous improvement of the signal transmission requirements of high-speed connectors, there is still room for improvement in the shielding of the differential signal terminals of the existing backplane connectors.
An object of the present disclosure is to provide a backplane connector with improved shielding effect.
In order to achieve the above object, the present disclosure adopts the following technical solution: a backplane connector, comprising a wafer, the wafer comprising: a plurality of conductive terminals, each conductive terminal comprising a connection portion and a contact portion; an insulating frame fixed with the connection portions of the conductive terminals; a first metal shield comprising a first extension portion located on one side of the contact portions of the conductive terminals; and a second metal shield comprising a second extension portion located on the other opposite side of the contact portions of the conductive terminals; wherein the conductive terminals comprise differential signal terminals, a first ground terminal and a second ground terminal, and the differential signal terminals are located between the first ground terminal and the second ground terminal; wherein the first extension portion comprises a first bulge protruding toward the first ground terminal and a second bulge protruding toward the second ground terminal; wherein the second extension portion comprises a third bulge protruding toward the first ground terminal and a fourth bulge protruding toward the second ground terminal; and wherein the first bulge and the third bulge are in contact with two opposite side surfaces of the contact portion of the first ground terminal, respectively; the second bulge and the fourth bulge are in contact two opposite side surfaces of the contact portion of the second ground terminal, respectively; and the first extension portion, the second extension portion, the first ground terminal and the second ground terminal jointly form a shielding space which encloses the contact portions of the differential signal terminals.
Compared with the prior art, the first extension portion, the second extension portion, the first ground terminal and the second ground terminal of the present disclosure jointly form a shielding space enclosing the contact portions of the differential signal terminals. As a result, the shielding space is capable of providing better shielding for the differential signal terminals along the length of the contact portions of the differential signal terminals, reducing crosstalk, and improving the quality of signal transmission.
Exemplary embodiments will be described in detail here, examples of which are shown in drawings. When referring to the drawings below, unless otherwise indicated, same numerals in different drawings represent the same or similar elements. The examples described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of devices and methods consistent with some aspects of the application as detailed in the appended claims.
The terminology used in this application is only for the purpose of describing particular embodiments, and is not intended to limit this application. The singular forms “a”, “said”, and “the” used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings.
It should be understood that the terms “first”, “second” and similar words used in the specification and claims of this application do not represent any order, quantity or importance, but are only used to distinguish different components. Similarly, “an” or “a” and other similar words do not mean a quantity limit, but mean that there is at least one; “multiple” or “a plurality of” means two or more than two. Unless otherwise noted, “front”, “rear”, “lower” and/or “upper” and similar words are for ease of description only and are not limited to one location or one spatial orientation. Similar words such as “include” or “comprise” mean that elements or objects appear before “include” or “comprise” cover elements or objects listed after “include” or “comprise” and their equivalents, and do not exclude other elements or objects. The term “a plurality of” mentioned in the present disclosure includes two or more.
Hereinafter, some embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.
Referring to
Referring to
Referring to
Besides, referring to
Referring to
Referring to
The insulating frame 21 further includes a plurality of posts 216 for fixing the first metal shield 23 and the second metal shield 24. In the illustrated embodiment of the present disclosure, the posts 216 are disposed on the bottom wall 214, the first connecting wall 2151, the second connecting wall 2152 and the front wall 212. The first metal shield 23 and the second metal shield 24 are located on opposite sides of the insulating frame 21, respectively. The posts 216 include a plurality of first posts 2161 and a plurality of second posts 2162. The first posts 2161 and the second posts 2162 are located on opposite sides of the insulating frame 21, respectively, so as to be fixed and positioned with the first metal shield 23 and the second metal shield 24.
Referring to
Each group of conductive terminals 22 include a plurality of first ground terminals G1, a plurality of second ground terminals G2, and a plurality of signal terminals S1. In the illustrated embodiment of the present disclosure, two adjacent signal terminals S1 form a pair of differential signal terminals. Each pair of differential signal terminals are located between one first ground terminal G1 and one second ground terminal G2. That is, each group of conductive terminals 22 are arranged in a manner of G1-S1-S1-G2, which is beneficial to improve the quality of signal transmission. The differential signal terminals are narrow-side coupling or wide-side coupling. A width of the first ground terminal G1 and a width the second ground terminal G2 are greater than a width of each signal terminal S1 which is located between the first ground terminal G1 and the second ground terminal G2. Therefore, it is beneficial to increase the shielding area and improve the shielding effect.
In the illustrated embodiment of the present disclosure, the connection portions 223 of the conductive terminals 22 are partially insert-molded with the insulating frame 21. Each connection portion 223 of the signal terminal S1 has a narrowed portion 2230 insert-molded with the insulating frame 21 so as to adjust the impedance of the signal terminal S1 for achieving impedance matching. In the illustrated embodiment of the present disclosure, the contact portion 221 of the signal terminal S1 is substantially needle-shaped. The contact portion 221 of the first ground terminal G1 and the contact portion 221 of the second ground terminal G2 are substantially rectangular-shaped. The contact portion 221 of the signal terminal S1 and the connection portion 223 of the conductive terminal 22 are both coplanar, which means they are located in a same first plane (for example, a horizontal plane). It should be noted that the technical term “coplanar” used in the present disclosure is intended to indicate that related components are substantially flush, which includes situations of incomplete coplanarity caused by manufacturing tolerances. In the illustrated embodiment of the present disclosure, the first ground terminal G1 includes a first torsion portion 2241 connecting its contact portion 221 and its tail portion 222, so that the contact portion 221 of the first ground terminal G1 is located in a second plane (for example, a vertical plane) perpendicular to the first plane. The second ground terminal G2 includes a second torsion portion 2242 connecting its contact portion 221 and its tail portion 222, so that the contact portion 221 of the second ground terminal G2 is also located in the second plane (for example, the vertical plane) perpendicular to the first plane. The contact portion 221 of the first ground terminal G1 and the contact portion 221 of the second ground terminal G2 are parallel to each other. Each connection portion 223 of the first ground terminals G1 and the second ground terminals G2 further includes a slot 2231 adjacent to its corresponding tail portion 222. The slot 2231 extend through a bottom edge of the connection portion 223, so that the connection portions 223 is divided into a first end portion 2232 and a second end portion 2233.
In the illustrated embodiment of the present disclosure, the first metal shield 23 and the second metal shield 24 are symmetrically disposed on opposite sides of the insulating frame 21. Referring to
The first extension portion 232 includes a plurality of first bulges 2321 protruding toward the corresponding contact portions 221 of the first ground terminals G1, a plurality of second bulges 2322 protruding toward the corresponding contact portions 221 of the second ground terminals G2, and a plurality of first elastic pieces 2323 each of which is located between adjacent first bulge 2321 and adjacent second bulge 2322. The first elastic pieces 2323 extend along directions toward the first main body portion 231. Each first elastic piece 2323 has an arc-shaped contact portion 2324. In the illustrated embodiment of the present disclosure, the first extension portion 232 further includes two first protruding tabs 2325 located at opposite sides of each first elastic piece 2323. The first protruding tabs 2325 and the first elastic pieces 2323 extend along opposite directions. The first protruding tabs 2325 protrude sidewardly to contact the adjacent wafer 2 so as to improve the shielding effect. In the illustrated embodiment of the present disclosure, referring to
In addition, the first main body portion 231 further includes a plurality of first protruding pieces 2312 extending downwardly from a bottom edge thereof and a plurality of connecting pieces 2313 each of which is located between two adjacent first protruding pieces 2312. By providing the first protruding pieces 2312, the shielding length can be extended, and the shielding effect of the signal terminals S1 can be improved. In the illustrated embodiment of the present disclosure, the connecting pieces 2313 are stamped from the first main body portion 231. Each connecting piece 2313 straddles the corresponding slot 2231 to connect one side of the first end portion 2232 and the second end portion 2233 of the same first ground terminal G1, thereby improving the shielding effect. At the same time, each connecting piece 2313 can also connect one side of the first end portion 2232 and the second end portion 2233 of the same second ground terminal G2, thereby improving the shielding effect.
Similarly, referring to
The second extension portion 242 includes a plurality of third bulges 2421 protruding toward the contact portions 221 of the first ground terminals G1, a plurality of fourth bulges 2422 protruding toward the contact portions 221 of the second ground terminals G2, and a plurality of second elastic pieces 2423 each of which is located between adjacent third bulge 2421 and adjacent fourth bulge 2422. The second elastic pieces 2423 extend along directions toward the second main body portion 241. Each second elastic piece 2423 has an arc-shaped contact portion 2424. In the illustrated embodiment of the present disclosure, the second extension portion 242 further includes two second protruding tabs 2425 located at opposite sides of each second elastic piece 2423. The second protruding tabs 2425 and the second elastic pieces 2423 extend along opposite directions. The second protruding tabs 2425 protrude sidewardly to contact the adjacent wafer 2 so as to improve the shielding effect. In the illustrated embodiment of the present disclosure, a wall thickness of the third bulge 2421, a wall thickness of the fourth bulge 2422, and a wall thickness of a portion of the second extension portion 242 located between the third bulge 2421 and the fourth bulge 2422 are the same.
In addition, the second main body portion 241 further includes a plurality of second protruding pieces 2412 extending downwardly from a bottom edge thereof, and a plurality of connecting pieces 2413 each of which is located between two adjacent second protruding pieces 2412. By providing the second protruding pieces 2412, the shielding length can be extended, and the shielding effect on the signal terminals S1 can be improved. In the illustrated embodiment of the present disclosure, the connecting pieces 2413 are stamped from the second main body portion 241, and the connecting piece 2413 straddles the corresponding slot 2231 so as to connect the other side of the first end portion 2232 and the second end portion 2233 of the same first ground terminal G1 so as to improve the shielding effect. At the same time, the connecting piece 2413 can also connect the other side of the first end portion 2232 and the second end portion 2233 of the same second ground terminal G2 so as to improve the shielding effect.
Referring to
Referring to
Referring to
In the illustrated embodiment of the present disclosure, there are multiple wafers 2 of the first backplane connector 100, and the terminal arrangement of two adjacent wafers 2 are staggered. Correspondingly, the shielding cavities 26 at the same position of two adjacent wafers 2 are staggered (referring to
The above embodiments are only used to illustrate the present disclosure and not to limit the technical solutions described in the present disclosure. The understanding of this specification should be based on those skilled in the art. Descriptions of directions, although they have been described in detail in the above-mentioned embodiments of the present disclosure, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the application, and all technical solutions and improvements that do not depart from the spirit and scope of the application should be covered by the claims of the application.
Number | Date | Country | Kind |
---|---|---|---|
202010567796.4 | Jun 2020 | CN | national |
202010709180.6 | Jul 2020 | CN | national |
Number | Name | Date | Kind |
---|---|---|---|
4601527 | Lemke | Jul 1986 | A |
5664968 | Mickievicz | Sep 1997 | A |
9350126 | Little et al. | May 2016 | B2 |
20040043658 | Ko | Mar 2004 | A1 |
20040229510 | Lloyd et al. | Nov 2004 | A1 |
20070155239 | Nakada | Jul 2007 | A1 |
20080014798 | Pan | Jan 2008 | A1 |
20130203273 | Rathburn | Aug 2013 | A1 |
20140051295 | Westman et al. | Feb 2014 | A1 |
20140248796 | Pan | Sep 2014 | A1 |
20140295705 | Lee et al. | Oct 2014 | A1 |
20150194771 | Pan | Jul 2015 | A1 |
20150303618 | Lee et al. | Oct 2015 | A1 |
20150318642 | Lee et al. | Nov 2015 | A1 |
20160093985 | Zhang et al. | Mar 2016 | A1 |
20160322760 | Long et al. | Nov 2016 | A1 |
20180166828 | Gailus | Jun 2018 | A1 |
Number | Date | Country |
---|---|---|
1244959 | Feb 2000 | CN |
2513252 | Sep 2002 | CN |
2571026 | Sep 2003 | CN |
1491465 | Apr 2004 | CN |
1592990 | Mar 2005 | CN |
2682605 | Mar 2005 | CN |
101159354 | Apr 2008 | CN |
201142392 | Oct 2008 | CN |
101330172 | Dec 2008 | CN |
101527409 | Sep 2009 | CN |
101542640 | Sep 2009 | CN |
101728667 | Jun 2010 | CN |
101459299 | Nov 2010 | CN |
102088148 | Jun 2011 | CN |
102290653 | Dec 2011 | CN |
102468562 | May 2012 | CN |
202395246 | Aug 2012 | CN |
102694308 | Sep 2012 | CN |
102969621 | Mar 2013 | CN |
103151650 | Jun 2013 | CN |
103247918 | Aug 2013 | CN |
103296546 | Sep 2013 | CN |
103311746 | Sep 2013 | CN |
203589266 | May 2014 | CN |
103928795 | Jul 2014 | CN |
103988371 | Aug 2014 | CN |
104037551 | Sep 2014 | CN |
104241975 | Dec 2014 | CN |
104396095 | Mar 2015 | CN |
104505678 | Apr 2015 | CN |
104577406 | Apr 2015 | CN |
204304028 | Apr 2015 | CN |
104779487 | Jul 2015 | CN |
104810657 | Jul 2015 | CN |
105024230 | Nov 2015 | CN |
105470732 | Apr 2016 | CN |
105470736 | Apr 2016 | CN |
105612664 | May 2016 | CN |
105703159 | Jun 2016 | CN |
105742854 | Jul 2016 | CN |
105958245 | Sep 2016 | CN |
106207569 | Dec 2016 | CN |
205846279 | Dec 2016 | CN |
107104329 | Aug 2017 | CN |
104009303 | Jan 2018 | CN |
107565279 | Jan 2018 | CN |
105470679 | Apr 2018 | CN |
207530119 | Jun 2018 | CN |
109390806 | Feb 2019 | CN |
109546384 | Mar 2019 | CN |
109546388 | Mar 2019 | CN |
109586086 | Apr 2019 | CN |
109599724 | Apr 2019 | CN |
109659726 | Apr 2019 | CN |
109841981 | Jun 2019 | CN |
109950721 | Jun 2019 | CN |
208955335 | Jun 2019 | CN |
209056665 | Jul 2019 | CN |
110165448 | Aug 2019 | CN |
110247233 | Sep 2019 | CN |
110299649 | Oct 2019 | CN |
110323622 | Oct 2019 | CN |
110544850 | Dec 2019 | CN |
110600943 | Dec 2019 | CN |
110649407 | Jan 2020 | CN |
110718815 | Jan 2020 | CN |
110808499 | Feb 2020 | CN |
110838635 | Feb 2020 | CN |
111092342 | May 2020 | CN |
111370890 | Jul 2020 | CN |
111682366 | Sep 2020 | CN |
2000-058172 | Feb 2000 | JP |
415133 | Dec 2000 | TW |
459428 | Oct 2001 | TW |
M461166 | Sep 2013 | TW |
I414111 | Nov 2013 | TW |
I452767 | Sep 2014 | TW |
I528659 | Apr 2016 | TW |
I545845 | Aug 2016 | TW |
201733225 | Sep 2017 | TW |
I600231 | Sep 2017 | TW |
I623154 | May 2018 | TW |
201841440 | Nov 2018 | TW |
I648925 | Jan 2019 | TW |
M585436 | Oct 2019 | TW |
201943158 | Nov 2019 | TW |
M591270 | Feb 2020 | TW |
M593091 | Apr 2020 | TW |
WO 2016168820 | Oct 2016 | WO |
WO 2017106266 | Jun 2017 | WO |
Number | Date | Country | |
---|---|---|---|
20210399490 A1 | Dec 2021 | US |