CN109599724B - Shielding piece of backplane connector - Google Patents
Shielding piece of backplane connector Download PDFInfo
- Publication number
- CN109599724B CN109599724B CN201710937446.0A CN201710937446A CN109599724B CN 109599724 B CN109599724 B CN 109599724B CN 201710937446 A CN201710937446 A CN 201710937446A CN 109599724 B CN109599724 B CN 109599724B
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- CN
- China
- Prior art keywords
- differential pair
- shielding
- grounding
- shield
- backplane connector
- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
- H01R13/6581—Shield structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/70—Coupling devices
- H01R12/71—Coupling devices for rigid printing circuits or like structures
- H01R12/712—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit
- H01R12/716—Coupling device provided on the PCB
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
- H01R13/6581—Shield structure
- H01R13/6585—Shielding material individually surrounding or interposed between mutually spaced contacts
- H01R13/6586—Shielding material individually surrounding or interposed between mutually spaced contacts for separating multiple connector modules
- H01R13/6587—Shielding material individually surrounding or interposed between mutually spaced contacts for separating multiple connector modules for mounting on PCBs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
- H01R13/6591—Specific features or arrangements of connection of shield to conductive members
- H01R13/6597—Specific features or arrangements of connection of shield to conductive members the conductive member being a contact of the connector
Landscapes
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention relates to a shielding piece of a backplane connector, which comprises a shielding piece body arranged on the upper side or the lower side of a differential pair mounting plate, wherein the shielding piece body is provided with avoidance holes for avoiding differential pairs, the shielding piece body is also provided with contact parts for contacting and conducting with all grounding pins on the differential pair mounting plate, the avoidance holes are arranged on the shielding piece body, so that the corresponding differential pairs are annularly shielded, and meanwhile, the contact parts for contacting and conducting the grounding pins are arranged on the shielding piece body, so that all the grounding pins can be connected in series, the shortest signal return path is provided for surrounded signals, resonance is pushed backwards in a frequency domain, and a larger transmission bandwidth is provided.
Description
Technical Field
The present invention relates to a shield for a backplane connector.
Background
The backplane connector in the prior art includes a plurality of signal terminals and ground pins, where the signal terminals are arranged in differential pairs, and the corresponding ground pins are enclosed outside the corresponding differential pairs, so as to provide electromagnetic shielding for the corresponding differential pairs.
In the prior art, as shown in U.S. patent publication No. US2007155241a1, there are a plurality of L-shaped shielding plates arranged in a matrix in a backplane connector, each L-shaped shielding plate is a ground pin, and the L-shaped shielding plates have a shielding effect on its surrounding differential pairs, so as to reduce crosstalk.
Disclosure of Invention
The invention aims to provide a shielding piece of a backplane connector, which aims to solve the problems of incomplete return flow path and resonance caused by the arrangement form of a grounding pin in the prior art.
In order to achieve the above object, the shielding member of a backplane connector of the present invention adopts the following technical solutions:
scheme 1: the utility model provides a shield of back plate connector, is including being used for setting up the shield body on the upside or the downside of difference pair mounting panel, be equipped with on the shield body and be used for dodging the hole of dodging of difference pair, still be equipped with on the shield body and be used for the contact portion that switches on with the contact of difference to each earth pin on the mounting panel.
Scheme 2: on the basis of the scheme 1, the shielding piece comprises an insulator and a conducting layer covering the surface of the insulator. The cost is low, and the processing is convenient.
Scheme 3: on the basis of scheme 2, the conductive layer is disposed on the insulator by an electroplating or coating process. The process is simple and conventional and is convenient to operate.
Scheme 4: on the basis of the scheme 1, the screen plate is a conductive metal plate. No additional processing is required.
Scheme 5: on the basis of the scheme 1, the shielding piece is formed by molding a graphite shell made of a non-conductive material doped with metal fibers.
Scheme 6: on the basis of any one of scheme 1~5, the shield is for being used for pasting the shield plate of establishing on the lower side face of difference pair mounting panel, be equipped with the dress hole of wearing that the lower extreme that supplies the grounding pin stretches into on the shield plate, the contact site on the definition shield plate is lower contact site, wear the downthehole wall in dress hole or drill way outer edge and grounding pin contact realization shielding and switch on.
Scheme 7: on the basis of the scheme 6, the lower contact part is formed by an opening outer edge of a penetrating hole which is used for pressing against the lower end of the convex part of the grounding pin.
Scheme 8: on the basis of any one of scheme 1~5, the shielding part is for being used for the cover to establish the shielding box on the upside face of difference pair mounting panel, be equipped with crisscross interval arrangement on the shielding box and supply the ground connection that the ground pin passed to wear the dress chamber and supply the difference pair that the difference pair passed to wear the dress chamber.
Scheme 9: on the basis of the scheme 8, the shielding box is of a grid structure, and two adjacent grids respectively form a differential pair mounting cavity and a grounding mounting cavity.
Scheme 10: on the basis of the scheme 8, a contact part on the shielding box is defined as an upper contact part, and the outer edge of the lower port of the grounding penetration cavity is used for being in press fit with a press shoulder on the grounding pin to form the upper contact part.
Scheme 11: on the basis of the scheme 9, the differential pair mounting cavity on the shielding box is used for covering the outer side of the differential pair mounting boss on the differential pair mounting plate.
The invention has the beneficial effects that: compared with the prior art, the shielding part of the backplane connector disclosed by the invention has the advantages that the shielding part body is provided with the avoidance holes, so that the corresponding differential pairs are annularly shielded, and meanwhile, the shielding and conducting contact parts of the grounding pins are realized by the contact of the grounding pins on the shielding part body, so that all the grounding pins can be connected in series, the shortest signal return path is provided for surrounded signals, the resonance is pushed backwards in a frequency domain, and a larger transmission bandwidth is provided.
Drawings
Fig. 1 is a bottom view of an assembly structure of a backplane connector according to an embodiment of a shield of the backplane connector of the present invention;
fig. 2 is a top schematic view of an assembly structure of a backplane connector according to an embodiment of the shield of the backplane connector of the present invention;
FIG. 3 is a schematic bottom view of the base of FIG. 1;
FIG. 4 is a schematic top view of the base of FIG. 3;
fig. 5 is a schematic structural diagram of a first embodiment of a shielding member of the backplane connector of the present invention;
fig. 6 is a schematic structural diagram of a second embodiment of a shielding member of the backplane connector of the present invention;
fig. 7 is a schematic bottom structure view of the shield can of fig. 6;
FIG. 8 is a schematic structural diagram of the grounding pin of FIG. 1;
fig. 9 is a schematic structural diagram of the differential pair in fig. 1.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 to 5, the first embodiment of the shielding member of the backplane connector of the present invention, which is applied to a signal transmission process, includes a base 1, the base 1 is made of an insulating material, and has an overall U-shaped plate structure, and includes two opposite vertical plates 11 and a bottom plate connecting the two vertical plates, wherein a plurality of guiding grooves are provided on an inner side surface of each vertical plate 11 to guide and fix a daughter board connector butted thereto, and a differential pair mounting plate 12 for mounting a differential pair is formed on the bottom plate of the U-shaped plate. Of course, in other embodiments, the structural forms of the base 1 and the differential pair mounting plate 12 can be designed arbitrarily according to actual situations.
As shown in fig. 5, a plurality of differential pairs 3 are disposed on the differential pair mounting plate 12, the differential pairs are configured as shown in fig. 9, each differential pair 3 is disposed on the differential pair mounting plate 12 at intervals of multiple rows and multiple columns, and a ground pin 23 is further disposed on the differential pair mounting plate 12 between two adjacent differential pairs 3 for shielding the differential pairs 3. The upper plate surface of the differential pair mounting plate 12 is correspondingly provided with a differential pair mounting boss 14 which extends upwards and is used for mounting the differential pair 3, and the upper plate surface is correspondingly provided with a grounding mounting boss 13 which is arranged at an interval with the mounting boss and is used for mounting a grounding pin 23, and the differential pair mounting boss 14 and the grounding mounting boss 13 are arranged at an interval.
In this embodiment, the upper plate surface of the differential pair mounting plate 12 is further provided with a shielding member 2 for connecting the grounding pin 23 to shield the differential pair 3 as a whole, in this embodiment, the shielding member 2 is a shielding box 22 covered on the upper plate surface of the differential pair mounting plate 12, the shielding box 22 is provided with a shielding hole for the differential pair 3 to penetrate and shield the differential pair 3, and a placing hole for accommodating the corresponding grounding pin 23 is further provided, and the grounding pin 23 and the corresponding shielding box 22 are conductively connected, so that the peripheral side of the differential pair 3 is shielded as a whole, all the grounding pins 23 are conductively connected through the shielding box 22, and all the grounding pins 23 are connected in series, so that the shortest signal return path is provided for the surrounded signal, so that the resonance is pushed backwards in the frequency domain, and a larger transmission bandwidth is provided.
For the shielding box 22, it is a grid-shaped structure, and each grid is adapted to accommodate the corresponding grounding mounting boss 13 and differential pair mounting boss 14, and meanwhile, the side wall of each grid can be inserted between two adjacent mounting bosses, thereby realizing the positioning and clamping of the shielding box 22. Each cell is of a hole structure, the corresponding cell for accommodating the differential pair mounting boss 14 forms an upper shielding hole 222, and the corresponding cell for accommodating the grounding mounting boss 13 forms an upper placing hole 221. In the present embodiment, as shown in fig. 8, a pressing shoulder 232 is disposed at a middle position of the grounding pin 23 for overlapping on the upper end surface of the grounding mounting boss 13, a plurality of corresponding upper placing holes 221 are provided, the upper end of the grounding pin 23 has two upper connecting claws extending upward and arranged at intervals, the two upper connecting claws of the grounding pin 23 are synchronously inserted into the same upper placing hole 221, and the size of the upper placing hole 221 is smaller than the lateral size of the position of the pressing shoulder 232 of the grounding pin 23, when the shielding box 22 is covered on the differential pair mounting plate 12, the outer edge of the opening of the upper placing hole 221 is in pressing contact with the corresponding pressing shoulder 232 to form a contact portion, thereby achieving the conductive connection between the shielding box 22 and the grounding pin 23, and further achieving the differential pair shielding structure of the shielding box 22, the grounding pin 23 and the shielding plate 21. The insulator around the differential pair 3 is surrounded by the shielding holes of the shielding member, thereby forming a 360 ° ring shield, which reduces the interference of the differential pair 3 from external electromagnetic interference and also reduces the interference of the differential pair 3 from the adjacent differential pairs around.
In this embodiment, the shielding box 22 is formed by molding a metal material, in other embodiments, the shielding box 22 may be formed by molding a non-conductive metal material doped with metal fibers or a graphite shell, or may be formed by molding a non-metal material and then forming a conductive layer on the surface thereof by coating or plating.
The second embodiment of the shielding member of the backplane connector of the present invention: as shown in fig. 6 and 7, the difference from the first embodiment is that the lower plate surface of the differential pair mounting plate 12 is further provided with a shielding plate 21 for connecting the grounding pin 23 to shield the differential pair 3 as a whole, and for the shielding plate 21, in the present embodiment, since the differential pair mounting plate 12 has a rectangular structure as a whole, the shielding plate 21 is designed to have a rectangular plate structure fitting to the differential pair mounting plate 12. Correspondingly, the shielding plate 21 is provided with a lower shielding hole 212 penetrating through the upper and lower plate surfaces for the lower end of the differential pair 3 to pass through, correspondingly, a lower placing hole 211 for the lower end of the grounding pin 23 to penetrate through is provided around the lower shielding hole 212, in this embodiment, as shown in fig. 8, the lower end of the grounding pin 23 is provided with two lower connecting claws 234 extending downward and arranged side by side at intervals, a protrusion 231 extending laterally outward is provided on the claw body of the lower connecting claw 234, there are a plurality of corresponding lower placing holes 211, wherein two lower placing holes 211 are a group, two lower connecting claws 234 in the differential pair 3 are respectively inserted into two corresponding lower placing holes 211 in the same group, and the aperture of each lower placing hole 211 is slightly smaller than the lateral maximum dimension of the corresponding lower connecting claw 234, so that the contact portion can be formed by the upper end aperture edge of the lower placing hole 211 pressing and contacting the protrusion 231, the conductive connection of the shielding plate 21 and the grounding pin 23 is realized, and further, the lower ends of the grounding pins 23 are all connected in series. Of course, in other embodiments, the convex portion 231 may be disposed downward, and the wall of the lower placing hole 211 may be pressed against the convex portion 231 of the grounding pin 23 to achieve conductive connection. In this embodiment, the shielding plate 21 is made of a metal material, and in other embodiments, the shielding plate 21 may also be a structure in which a conductive layer is directly formed on the surface of an insulator by a method such as coating or electroplating; of course, the conductive layer may be formed on the surface of the insulator by other processes.
In other embodiments, the shielding box 22 and the shielding plate 21 may be selected, for example, the shielding plate 21 is disposed on the upper plate surface of the differential pair mounting plate 12; the contact part can be replaced by other structures, for example, the grounding pin is arranged in a long straight rod-shaped structure, and the elastic claw elastically contacted with the grounding pin is arranged on the corresponding shielding piece, so that shielding conduction can be realized.
Claims (5)
1. A shield for a backplane connector, comprising: the shielding part comprises a shielding part body arranged on the upper side of a differential pair mounting plate, wherein the shielding part body is provided with avoiding holes for avoiding differential pairs, the shielding part body is also provided with contact parts for contacting with each grounding needle on the differential pair mounting plate, the shielding part is a shielding box for covering the upper side plate surface of the differential pair mounting plate, the shielding box is provided with a grounding penetrating cavity for the grounding needle to pass and a differential pair penetrating cavity for the differential pair to pass, which are arranged at staggered intervals, the differential pair mounting cavity on the shielding box is used for covering the outer sides of the differential pair mounting bosses on the differential pair mounting plate, the shielding box is of a box lattice structure, each box lattice is used for adapting to accommodate the corresponding grounding mounting boss and the differential pair mounting boss, each box lattice is of a hole structure, and the box lattice for accommodating the grounding mounting boss is provided with placing holes, the pressure shoulder of the middle position of the grounding pin is overlapped on the upper end face of the grounding installation boss, the size of the upper placing hole is smaller than the transverse size of the pressure shoulder position of the grounding pin, and the outer edge of the opening of the upper placing hole is in abutting contact with the corresponding pressure shoulder to form a contact part, so that the shielding box is in conductive connection with the grounding pin.
2. The shield for a backplane connector of claim 1, wherein: the shielding piece comprises an insulator and a conducting layer covering the surface of the insulator.
3. The shield for a backplane connector of claim 2, wherein: the conductive layer is disposed on the insulator by an electroplating or coating process.
4. The shield for a backplane connector of claim 1, wherein: the shield is a conductive metal plate.
5. The shield for a backplane connector of claim 1, wherein: the shield is molded from a graphite shell, doped with metal fibers, of a non-conductive material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710937446.0A CN109599724B (en) | 2017-09-30 | 2017-09-30 | Shielding piece of backplane connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710937446.0A CN109599724B (en) | 2017-09-30 | 2017-09-30 | Shielding piece of backplane connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109599724A CN109599724A (en) | 2019-04-09 |
| CN109599724B true CN109599724B (en) | 2020-09-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710937446.0A Active CN109599724B (en) | 2017-09-30 | 2017-09-30 | Shielding piece of backplane connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109599724B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165448A (en) * | 2019-06-06 | 2019-08-23 | 东莞讯滔电子有限公司 | Electric connector |
| CN213151158U (en) | 2020-06-19 | 2021-05-07 | 东莞立讯技术有限公司 | Back panel connector |
| CN112652906B (en) | 2020-06-19 | 2022-12-02 | 东莞立讯技术有限公司 | Plugging module and cable connector |
| TWI792271B (en) | 2020-06-19 | 2023-02-11 | 大陸商東莞立訊技術有限公司 | Backplane connector assembly |
| CN112736524B (en) | 2020-12-28 | 2022-09-09 | 东莞立讯技术有限公司 | Terminal module and backplane connector |
| CN112909662B (en) * | 2021-01-20 | 2022-12-09 | 中航光电科技股份有限公司 | Connector and connector assembly using same |
| CN215299724U (en) * | 2021-02-09 | 2021-12-24 | 中航光电科技股份有限公司 | Shielding plate connecting conductor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5554050A (en) * | 1995-03-09 | 1996-09-10 | The Whitaker Corporation | Filtering insert for electrical connectors |
| CN102427178A (en) * | 2010-05-28 | 2012-04-25 | 泰科电子公司 | Ground interface for a connector system |
| CN102593664A (en) * | 2011-01-17 | 2012-07-18 | 泰科电子公司 | Connector assembly |
| CN202930669U (en) * | 2012-04-10 | 2013-05-08 | 番禺得意精密电子工业有限公司 | Electric connector |
| CN204289908U (en) * | 2014-10-14 | 2015-04-22 | 富加宜连接器（东莞）有限公司 | A kind of high speed connector optimizing signal integrity |
| CN106067610A (en) * | 2015-04-22 | 2016-11-02 | 泰科电子公司 | There is the electric connector of grounded bracket |
-
2017
- 2017-09-30 CN CN201710937446.0A patent/CN109599724B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5554050A (en) * | 1995-03-09 | 1996-09-10 | The Whitaker Corporation | Filtering insert for electrical connectors |
| CN102427178A (en) * | 2010-05-28 | 2012-04-25 | 泰科电子公司 | Ground interface for a connector system |
| CN102593664A (en) * | 2011-01-17 | 2012-07-18 | 泰科电子公司 | Connector assembly |
| CN202930669U (en) * | 2012-04-10 | 2013-05-08 | 番禺得意精密电子工业有限公司 | Electric connector |
| CN204289908U (en) * | 2014-10-14 | 2015-04-22 | 富加宜连接器（东莞）有限公司 | A kind of high speed connector optimizing signal integrity |
| CN106067610A (en) * | 2015-04-22 | 2016-11-02 | 泰科电子公司 | There is the electric connector of grounded bracket |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109599724A (en) | 2019-04-09 |
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