CN102724858A - Plug-in frame and shielding rear panel thereof - Google Patents
Plug-in frame and shielding rear panel thereof Download PDFInfo
- Publication number
- CN102724858A CN102724858A CN2012101948163A CN201210194816A CN102724858A CN 102724858 A CN102724858 A CN 102724858A CN 2012101948163 A CN2012101948163 A CN 2012101948163A CN 201210194816 A CN201210194816 A CN 201210194816A CN 102724858 A CN102724858 A CN 102724858A
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- China
- Prior art keywords
- shielding
- backboard
- waveguide
- waveguide aperture
- gnd
- 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
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1438—Back panels or connecting means therefor; Terminals; Coding means to avoid wrong insertion
- H05K7/1439—Back panel mother boards
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20536—Modifications to facilitate cooling, ventilating, or heating for racks or cabinets of standardised dimensions, e.g. electronic racks for aircraft or telecommunication equipment
- H05K7/20554—Forced ventilation of a gaseous coolant
- H05K7/20563—Forced ventilation of a gaseous coolant within sub-racks for removing heat from electronic boards
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/0041—Ventilation panels having provisions for screening
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0062—Structures of standardised dimensions, e.g. 19" rack, chassis for servers or telecommunications
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The embodiment of the invention discloses a shielding rear panel. A plurality of cooling holes which are waveguide holes (2) with waveguide characteristics are formed on the shielding rear panel (1). According to the shielding rear panel, the cooling holes are formed on the shielding rear panel, so that the shielding rear panel has the cooling function; and because the cooling holes are the waveguide holes with a waveguide characteristic, the rear panel arranged on a plug-in frame forms a shielding body with the shielding efficiency according to the shielding attenuation characteristic of the waveguide holes, and the interference of an electromagnetic signal between electronic equipment is prevented. According to the shielding rear panel in special design, shielding accessories are not needed, and dual effects of cooling and shielding can be achieved; and therefore, the defect of holing without shielding in the prior art is overcome on the premise that cooling effect is ensured and the interference between the electromagnetic signals of the electronic equipment is prevented. The embodiment of the invention also discloses a plug-in frame with the shielding rear panel.
Description
Technical field
The present invention relates to shield the backplane technology field, particularly a kind of interpolation frame and shielding backboard thereof.
Background technology
Interpolation frame be meant be used to install, the closed-in construction spare of stationary backplate and veneer.Wherein, veneer is meant the combination of circuit board and installed part; Backboard is meant and is used to connect veneer, for signal transmission between veneer provides the physical channel, is installed in the middle of the interpolation frame usually simultaneously.
In order to prevent the interference of electric room electromagnetic signal, general interpolation frame all need be done shielding processing.At present, backboard adopts conductive fabric and the seamless overlap joint of interpolation frame usually, constitutes a shield or realizes subregion shielding in the interpolation frame.
Prior art is generally all utilized backboard and interpolation frame to constitute shield and is shielded.But, along with the develop rapidly of communications industry, the expansion day by day of information service demand; The requirement of heat radiation makes that present equipment power dissipation is increasing, owing to need be dispelled the heat by wide-bore on backboard; Yet the perforate heat radiation has just destroyed the shield that original backboard and interpolation frame constitute on backboard.
Therefore, how to solve the problem of heat radiation and shielding simultaneously, become the important technological problems that those skilled in the art need to be resolved hurrily.
Summary of the invention
The embodiment of the invention provides a kind of shielding backboard, to solve the problem of heat radiation and shielding simultaneously.
For realizing above-mentioned purpose, the present invention provides following technical scheme:
A kind of shielding backboard offers some louvres on the said shielding backboard, and said louvre is the waveguide aperture with guide properties.
The embodiment of the invention also provides a kind of interpolation frame, comprises the interpolation frame body and is arranged at the backboard on the said interpolation frame body, and said backboard is as above each described shielding backboard.
Can find out that from above-mentioned technical scheme the shielding backboard that the embodiment of the invention provides through on the shielding backboard, offering louvre, so that it has heat sinking function, satisfies its heat radiation requirement; This louvre is the waveguide aperture with guide properties, according to the shielding attenuation characteristic of waveguide aperture, makes the backboard that is mounted on the interpolation frame constitute the shield with screening effectiveness, has prevented the interference of electric room electromagnetic signal.The embodiment of the invention is through the special shielding backboard of design; Need not at interpolation frame arranged outside screening accessory; Can have the double effects that dispels the heat and shield equally concurrently, therefore guarantee heat radiation and preventing to have solved the big defective that takes up room in the prior art under the prerequisite of equipment room electromagnetic signal interference.
The interpolation frame that the embodiment of the invention provides owing to have above-mentioned shielding backboard, therefore has all technique effects of above-mentioned shielding backboard concurrently, and this paper repeats no more at this.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The sectional structure sketch map of the waveguide aperture that Fig. 1 provides for the embodiment of the invention;
The structural representation of the waveguide aperture that Fig. 2 provides for the embodiment of the invention;
The structural representation of the shielding backboard that Fig. 3 provides for the embodiment of the invention;
The structural representation of the shielding backboard that Fig. 4 provides for the embodiment of the invention with circular waveguide hole;
The structural representation of the shielding backboard that Fig. 5 provides for the embodiment of the invention with rectangular wave guide hole;
The structural representation of the shielding backboard that Fig. 6 provides for the embodiment of the invention with hexagon waveguide aperture;
The structural representation of the circular waveguide hole arrangement mode that Fig. 7 provides for the embodiment of the invention;
The structural representation of the rectangular wave guide hole that Fig. 8 provides for the embodiment of the invention;
The structural representation of the hexagon waveguide aperture arrangement mode that Fig. 9 provides for the embodiment of the invention;
The structural representation of the circular waveguide hole arrangement mode that Figure 10 provides for another embodiment of the present invention;
The structural representation of the circular waveguide hole arrangement mode that Figure 11 provides for yet another embodiment of the invention;
The structural representation of the circular waveguide hole arrangement mode that Figure 12 provides for further embodiment of this invention.
Embodiment
The embodiment of the invention discloses a kind of shielding backboard, to solve the problem of heat radiation and shielding simultaneously.
The embodiment of the invention also discloses a kind of interpolation frame with above-mentioned shielding backboard.
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
See also Fig. 1-Fig. 3, the sectional structure sketch map of the waveguide aperture that Fig. 1 provides for the embodiment of the invention; The structural representation of the shielding backboard that the structural representation of the waveguide aperture that Fig. 2 provides for the embodiment of the invention, Fig. 3 provide for the embodiment of the invention.
The shielding backboard that the embodiment of the invention provides, for having the backboard of shielding action, so-called backboard means and is used to connect veneer, for signal transmission between veneer provides the physical channel, is installed in the middle of the interpolation frame usually simultaneously.Offer some louvres on the shielding backboard 1, to reach the heat radiation purpose of shielding backboard.Present embodiment is not done qualification to the quantity of louvre, can be arbitrarily, and the shape and size of louvre are not all done qualification, can be according to the size and the size of actual heat radiation situation design louvre.Focusing on of the embodiment of the invention, louvre are the waveguide aperture 2 with guide properties.
The shielding backboard that the embodiment of the invention provides through on shielding backboard 1, offering louvre, so that it has heat sinking function, satisfies its heat radiation requirement; This louvre is the waveguide aperture 2 with guide properties, according to the shielding attenuation characteristic of waveguide aperture, makes the backboard that is mounted on the interpolation frame constitute the shield with screening effectiveness, has prevented the interference of electric room electromagnetic signal.The embodiment of the invention is through the special shielding backboard of design; Need not at interpolation frame arranged outside screening accessory; Can have the double effects that dispels the heat and shield equally concurrently, therefore guarantee heat radiation and preventing to have solved the big defective that takes up room in the prior art under the prerequisite of equipment room electromagnetic signal interference.
In the present invention's one specific embodiment, the connection attribute of the top layer of waveguide aperture 2, bottom and inwall is GND (Ground represents ground wire or 0 line) attribute.Cut-off frequency fc=6.9 * 109/d the Hz of circular waveguide (cross section that is waveguide aperture is for circular); According to Theory of Electromagnetic Field; As long as operating frequency is much smaller than waveguide cutoff frequency fc; The magnetic field shielding usefulness S=32t/d dB of circular waveguide so, wherein d is the diameter of waveguide aperture, t is the length of waveguide aperture.
The cut-off frequency fc=5.9*109/d Hz of rectangular waveguide (cross section that is waveguide aperture is square), correspondingly, the shield effectiveness S=27.2t/d dB of rectangular waveguide, wherein d is the length of side of waveguide aperture, t is the length of waveguide aperture.
The above-mentioned shield effectiveness formula of only enumerating two types of waveguides; It will be understood by those skilled in the art that; Other shape waveguide has shield effectiveness equally; Can calculate corresponding shield effectiveness according to corresponding formulas in the prior art, enumerate no longer one by one to the shield effectiveness formula of other type waveguide.The embodiment of the invention can be imitated computing formula through the cut-off frequency and the screen of difformity perforate, selects difform perforate and perforate size, satisfies the requirement of different screening effectivenesss.
As shown in Figure 2; The top layer GND21 of waveguide aperture 2 is connected on the GND plane, top layer of shielding backboard; The bottom GND23 of waveguide aperture 2 is connected on the bottom GND plane of shielding backboard; The inwall GND22 of waveguide aperture 2 links to each other with the top layer GND21 of waveguide aperture 2 and the bottom GND23 of waveguide aperture 2 respectively, guarantees the continuity of whole GND.
In the present embodiment promptly, the implementation method that has the PCB metallization waveguide aperture of waveguide shielding character:
A) top layer of louvre and bottom connection attribute are set to GND;
B) inwall of louvre also is set to GND for metallize copper plating treatment (inwall that is louvre has the metallization copper plate) and connection attribute;
C) GND of the top layer of louvre, bottom and hole inwall is connected on backboard top layer and the whole layer of the bottom GND plane, guarantees the continuity of whole GND, thereby forms the waveguide aperture 2 with shielding action.
See also Fig. 4-Fig. 6, the structural representation of the shielding backboard that Fig. 4 provides for the embodiment of the invention with circular waveguide hole; The structural representation of the shielding backboard that Fig. 5 provides for the embodiment of the invention with rectangular wave guide hole; The structural representation of the shielding backboard that Fig. 6 provides for the embodiment of the invention with hexagon waveguide aperture.
In the present embodiment, waveguide aperture 2 can be circular hole shown in Figure 4, square hole shown in Figure 5 and regular hexagon hole shown in Figure 6, also can be slot, fillet square hole, fillet slot or irregularly-shaped hole.The shape that is the disclosed waveguide aperture of present embodiment can be arbitrary polygon hole, arcuate socket or other irregular irregularly-shaped holes, and the embodiment of the invention does not limit the shape of waveguide aperture.
See also Fig. 7-Figure 12, the structural representation of the circular waveguide hole arrangement mode that Fig. 7 provides for the embodiment of the invention; The structural representation of the rectangular wave guide hole that Fig. 8 provides for the embodiment of the invention; The structural representation of the hexagon waveguide aperture arrangement mode that Fig. 9 provides for the embodiment of the invention; The structural representation of the circular waveguide hole arrangement mode that Figure 10 provides for another embodiment of the present invention; The structural representation of the circular waveguide hole arrangement mode that Figure 11 provides for yet another embodiment of the invention; The structural representation of the circular waveguide hole arrangement mode that Figure 12 provides for further embodiment of this invention.
In the present embodiment; Waveguide aperture 2 is a plurality of; A plurality of waveguide aperture 2 structures are identical; And, also can be the special-shaped array way shown in the triangular array shown in the trapezoidal array shown in Figure 10, Figure 11, rhombus array, circular array or the Figure 12 shown in Fig. 7-Fig. 9 and arrange along disclosed quadrate array of Fig. 4, Fig. 5 and Fig. 6 or rectangular array.Be that the disclosed a plurality of waveguide apertures 2 of the embodiment of the invention can be arranged according to array way; Also can arrange according to irregular arrangement mode; Wherein array way can be arbitrarily, and on a shielding backboard 1 a plurality of arrayed modes can be set also, and the embodiment of the invention is not done qualification.
In another embodiment of the present invention; Waveguide aperture 2 is a plurality of; And a plurality of waveguide aperture 2 structures are different; Promptly on same shielding backboard 1, can arrange the waveguide aperture 2 of two kinds or more kinds of shapes, as on same shielding backboard 1, arranging circular hole, square hole, slot, regular hexagon hole, fillet square hole, fillet slot and irregularly-shaped hole two kinds or more kinds of.
In yet another embodiment of the invention, a plurality of waveguide aperture shapes are identical and size is different, promptly on same shielding backboard 1, can arrange the waveguide aperture 2 of same shape, circular waveguide hole for example, but the diameter in circular waveguide hole can be different.
In the present embodiment, the thickness of shielding backboard is the thickness that PCB (Printed Circuit Board, printed circuit board) production and processing technology can be realized, is 0.5mm-50mm like thickness.
The interpolation frame that the embodiment of the invention provides comprises the interpolation frame body and is arranged at the backboard on the interpolation frame body that wherein, backboard is the as above disclosed shielding backboard of embodiment.Therefore the interpolation frame that the embodiment of the invention provides has all technique effects of above-mentioned shielding backboard concurrently owing to adopt the as above disclosed shielding backboard of embodiment, please refer to foregoing description, and this paper repeats no more at this.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. a shielding backboard is characterized in that offer some louvres on the said shielding backboard (1), said louvre is the waveguide aperture (2) with guide properties.
2. shielding backboard as claimed in claim 1 is characterized in that, the connection attribute of top layer, bottom and the inwall of said waveguide aperture (2) is the GND attribute.
3. shielding backboard as claimed in claim 2 is characterized in that, the top layer GND (21) of said waveguide aperture (2) is connected on the GND plane, top layer of said shielding backboard;
The bottom GND (23) of said waveguide aperture (2) is connected on the bottom GND plane of said shielding backboard;
The inwall GND (22) of said waveguide aperture (2) links to each other with the top layer GND (21) of said waveguide aperture (2) and the bottom GND (23) of said waveguide aperture (2) respectively.
4. shielding backboard as claimed in claim 2 is characterized in that, the inwall of said waveguide aperture (2) has the metallization copper plate.
5. like each described shielding backboard of claim 1-4, it is characterized in that said waveguide aperture (2) is circular hole, square hole, slot, regular hexagon hole, fillet square hole, fillet slot or irregularly-shaped hole.
6. like each described shielding backboard of claim 1-4; It is characterized in that; Said waveguide aperture (2) is a plurality of; A plurality of said waveguide apertures (2) structure is identical, and along quadrate array, rectangular array, trapezoidal array, triangular array, rhombus array, circular array or special-shaped arranged in array mode.
7. like each described shielding backboard of claim 1-4, it is characterized in that said waveguide aperture (2) is a plurality of, a plurality of said waveguide apertures (2) structure is different.
8. shielding backboard as claimed in claim 7 is characterized in that, a plurality of said waveguide apertures (2) shape is different, and perhaps shape is identical and size is different.
9. like each described shielding backboard of claim 1-7, it is characterized in that the thickness of said shielding backboard (1) is 0.5mm-50mm.
10. an interpolation frame comprises the interpolation frame body and is arranged at the backboard on the said interpolation frame body, it is characterized in that said backboard is like each described shielding backboard of claim 1-9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210194816.3A CN102724858B (en) | 2012-06-13 | 2012-06-13 | A kind of interpolation frame and shielding backboard thereof |
| PCT/CN2013/071116 WO2013185490A1 (en) | 2012-06-13 | 2013-01-30 | Plug frame and back shielding plate thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210194816.3A CN102724858B (en) | 2012-06-13 | 2012-06-13 | A kind of interpolation frame and shielding backboard thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102724858A true CN102724858A (en) | 2012-10-10 |
| CN102724858B CN102724858B (en) | 2016-01-27 |
Family
ID=46950449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210194816.3A Active CN102724858B (en) | 2012-06-13 | 2012-06-13 | A kind of interpolation frame and shielding backboard thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102724858B (en) |
| WO (1) | WO2013185490A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013185490A1 (en) * | 2012-06-13 | 2013-12-19 | 华为技术有限公司 | Plug frame and back shielding plate thereof |
| CN104684341A (en) * | 2013-11-30 | 2015-06-03 | 鸿富锦精密工业（深圳）有限公司 | Radiator |
| CN105228397A (en) * | 2015-11-02 | 2016-01-06 | 珠海格力电器股份有限公司 | Electric appliance box |
| CN107064577A (en) * | 2017-05-19 | 2017-08-18 | 京信通信系统（中国）有限公司 | Shield box structure and environmental experiment device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2438296Y (en) * | 2000-08-10 | 2001-07-04 | 熊智 | Electromagnetic information leakage proventing cabinet |
| CN2862613Y (en) * | 2005-08-31 | 2007-01-24 | 华为技术有限公司 | Screening insert frame |
| CN201766809U (en) * | 2010-08-24 | 2011-03-16 | 中兴通讯股份有限公司 | Electronic communication equipment system and electromagnetic shielding device |
| EP2565745A1 (en) * | 2011-08-10 | 2013-03-06 | Huawei Technologies Co., Ltd. | Cabinet-level server and centralized power supply shielding structure thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102724858B (en) * | 2012-06-13 | 2016-01-27 | 华为技术有限公司 | A kind of interpolation frame and shielding backboard thereof |
-
2012
- 2012-06-13 CN CN201210194816.3A patent/CN102724858B/en active Active
-
2013
- 2013-01-30 WO PCT/CN2013/071116 patent/WO2013185490A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2438296Y (en) * | 2000-08-10 | 2001-07-04 | 熊智 | Electromagnetic information leakage proventing cabinet |
| CN2862613Y (en) * | 2005-08-31 | 2007-01-24 | 华为技术有限公司 | Screening insert frame |
| CN201766809U (en) * | 2010-08-24 | 2011-03-16 | 中兴通讯股份有限公司 | Electronic communication equipment system and electromagnetic shielding device |
| EP2565745A1 (en) * | 2011-08-10 | 2013-03-06 | Huawei Technologies Co., Ltd. | Cabinet-level server and centralized power supply shielding structure thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013185490A1 (en) * | 2012-06-13 | 2013-12-19 | 华为技术有限公司 | Plug frame and back shielding plate thereof |
| CN104684341A (en) * | 2013-11-30 | 2015-06-03 | 鸿富锦精密工业（深圳）有限公司 | Radiator |
| CN105228397A (en) * | 2015-11-02 | 2016-01-06 | 珠海格力电器股份有限公司 | Electric appliance box |
| CN107064577A (en) * | 2017-05-19 | 2017-08-18 | 京信通信系统（中国）有限公司 | Shield box structure and environmental experiment device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013185490A1 (en) | 2013-12-19 |
| CN102724858B (en) | 2016-01-27 |
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