CN103422794B - A kind of thin-walled electromagnetic shield door - Google Patents
A kind of thin-walled electromagnetic shield door Download PDFInfo
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- CN103422794B CN103422794B CN201310389625.7A CN201310389625A CN103422794B CN 103422794 B CN103422794 B CN 103422794B CN 201310389625 A CN201310389625 A CN 201310389625A CN 103422794 B CN103422794 B CN 103422794B
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Abstract
The invention provides a kind of thin-walled electromagnetic shield door, in order to the electromagnetic field leakage of shielded electronic equipment shell, this shield door comprises door-plate, cushion block, fixed block, pivot pin, locking member and conductive spacer, a mounting groove is offered on the side in described electromagnetic field leakage portion, described cushion block is fixed by screws on the inwall of electronic equipment casing, described fixed block is connected and fixed through mounting groove and cushion block, the side of described door-plate is rotationally connected by pivot pin and fixed block, the opposite side of door-plate is connected by locking member and electronic equipment casing are sealed, described conductive spacer is pasted onto door-plate inner face surrounding.The whole combiner of the present invention is compact, and process and assemble is easy, can the electromagnetic field leakage portion of good shielding device, and the equipment that ensures is to the good anti-leak of electromagnetic signal, anti-tampering.
Description
Technical field
The present invention relates to Structural Design of Electronic System field, especially relate to a kind of thin-walled electromagnetic shield door.
Background technology
Along with the fast development of electronic technology, modern communications product commercially emerges in multitude.But, due to electronics frequency domain by low frequency to the high frequency even extensive use of hyperfrequency, cause easily growing electromagnetic interference between electronic equipment.During our deisgn product, the environment collaborative work ability between electronic equipment must be paid attention to---i.e. the Electromagnetic Compatibility of electronic equipment.Electronic equipment casing generally adopts thin-wall metal to be processed to form closed case and panel thereof, this cabinet is exactly a good shield, but because such as display interface, console switch and button, external interface, ventilation and heat, processing and installation etc. must arrange a lot of hole, gap or window, thus destroy shielding case body, this then must bring electromagnetic leakage and interference, so we must take corresponding safeguard procedures during design.
Summary of the invention
The object of the invention is to: for prior art Problems existing, there is provided a kind of whole combiner compact, process and assemble is easy, can the electromagnetic field leakage portion of good shielding device, and the equipment that ensures is to the good anti-leak of electromagnetic signal, jamming-proof thin-walled electromagnetic shield door.
Goal of the invention of the present invention is achieved through the following technical solutions:
A kind of thin-walled electromagnetic shield door, in order to the electromagnetic field leakage of shielded electronic equipment shell, it is characterized in that, this shield door comprises door-plate, cushion block, fixed block, pivot pin, locking member and conductive spacer, a mounting groove is offered on the side in described electromagnetic field leakage portion, described cushion block is fixed by screws on the inwall of electronic equipment casing, described fixed block is connected and fixed through mounting groove and cushion block, the side of described door-plate is rotationally connected by pivot pin and fixed block, the opposite side of door-plate is connected by locking member and electronic equipment casing are sealed, described conductive spacer is pasted onto door-plate inner face surrounding.
Preferably, the two ends of this fixed block are to the same side to being respectively formed with a lug boss, each lug boss is offered a through hole, the two ends, side of described door-plate also correspondence are respectively provided with a fitting projection portion, each fitting projection portion offers a through hole, described pivot pin is provided with two, and each correspondence connects a lug boss and fitting projection portion.
Preferably, the inner face of described door-plate is provided with latticed ribs.
Preferably, the outside of described door-plate is provided with strip groove.
Preferably, the cross section of described conductive spacer is zigzag or waveform.
Preferably, described conductive spacer is beryllium brass reed.
Preferably, described locking member is knob bolts.
Preferably, the contact surface of described cushion block and the inwall of electronic equipment casing scribbles DJB-823 electronics oil soakage layer.
Preferably, described electromagnetic field leakage portion is due to the hole installed and processing needs and offers on electronic equipment casing, gap or window.
Compared with prior art, the present invention has the following advantages:
1, achieve gap effectively to process: when this electromagnetic shield door body is in and closes the door tightening state, have 4 between door with anterior aluminum deck and contact gap; Door body is divided into two parts in left and right by left sidecar body hinge through structure nature, door body right-hand component 4 limit is pasted with beryllium brass reed, good with anterior aluminum deck sinking doorframe end face close contact, electrically conductive continuity, door body right-hand component is formed as an electromagnetism airtight cavity be communicated with together with cabinet; Door body left-hand component, because 4 end faces and the aluminum deck back side of cushion block part are fastenedly connected, and has all smeared DJB-823 electronics oil soakage layer after the oxidation of contact surface Precision Machining, surface conductance, thus these 4 contacts to stitch electrically conductive continuitys good; Therefore perforate needed for the function on this electromagnetic shield door body effective shutoff case front panel, maintains whole cabinet and remains a good shielding cavity, thus the equipment of guarantee is to the good anti-leak of electromagnetic signal, anti-tampering!
2, the compact practicality of slim door body: cushion block, fixed block, pivot pin, door-plate four parts had both completed self basic function, the turning joint of ingenious formation door is secondary again, is effectively processed in gap again simultaneously; Whole combiner is compact, and process and assemble is easy, when not changing original electronic equipment front panel design of material, adds this similar thin electromagnetic shield door, effectively can meet the electromagnetic protection of the anterior function opening of equipment, have good practicality.
3, be just used on electronic product thin-wall metal cabinet the protection at the positions such as perforate of windowing greatly, concentrate, this design has been applied on a lot of product, respond well.
Accompanying drawing explanation
Fig. 1 is traditional electromagnetic shielding case front panel structural representation;
Fig. 2 is structural representation of the present invention;
Fig. 3 is the inner face structural representation of door-plate;
Fig. 4 is the structural representation of the outside of door-plate;
Fig. 5 is the left TV structure schematic diagram of Fig. 3;
Fig. 6 is the sectional structure schematic diagram of bowing of Fig. 3;
Fig. 7 is the structural representation of cushion block;
Fig. 8 is that the B-B of Fig. 7 is to sectional structure schematic diagram;
Fig. 9 is the structural representation of fixed block;
Figure 10 is the left TV structure schematic diagram of Fig. 9;
Figure 11 is the structural representation of pivot pin;
Figure 12 is the structural representation of knob bolts.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
embodiment
As in Fig. 1 shown in A, traditional electromagnetic shielding case on its anterior aluminum deck because need to arrange the parts such as a few group configuration interface, toggle switch and USB, thus a lot of hole, gap or window (we claim these holes, gap or window etc. for electromagnetic field leakage portion) can be formed, can destroy shielding case body like this, this then must bring electromagnetic leakage and interference.
The present invention is in order to realize electromagnetic protection, shielded electronic equipment shell is (as cabinet, below be all embodiment with cabinet) electromagnetic field leakage, so be provided with an electromagnetic shield door on the anterior aluminum deck of cabinet 6, its structure as shown in Figure 2, comprises door-plate 1, cushion block 2, fixed block 3, pivot pin 4, locking member 5 and conductive spacer 7.A mounting groove 61 is offered on the side of electromagnetic field leakage portion A, for installing fixing door-plate.Cushion block 2 is fixed by screws on the inwall of cabinet 6, and its position is just against mounting groove 61.Fixed block 3 is connected and fixed through mounting groove 61 and cushion block 2 outside cabinet 6.A through hole 32, to the same side to being respectively formed with a lug boss 31, each lug boss 31 is offered in the two ends of fixed block 3, installs door-plate 1 for coordinating.Cushion block about 2 two ends are provided with installation site B, and the two ends up and down of fixed block 3 are fixed by M3x6 sunk screw and cushion block 2.The two ends, side of door-plate 1 also correspondence are respectively provided with a fitting projection portion 13, each fitting projection portion 13 offer a through hole 14.Pivot pin 4 has two, and a bearing pin is for connecting lug boss and the fitting projection portion of upper end, and another is for connecting lug boss and the fitting projection portion of lower end, thus realizes door-plate 1 to be connected with fixed block 3, and door-plate 1 can rotate along bearing pin 4.The opposite side of door-plate 1 is connected with cabinet 6 is sealed by locking member 5, when door-plate 1 closed by needs, then by locking member 5, door-plate 1 and cabinet 6 are locked together, when needs opening-door plate 1, open locking member 5, door-plate 1 can be separated with cabinet 6, and the locking member of the present embodiment adopts knob bolts, for convenience of through knob bolts, also on door-plate 1, offer hole 12.Meanwhile, also conductive spacer 7 is pasted onto door-plate 1 inner face surrounding, like this when door-plate closes, electromagnetic field leakage portion just can be realized to shield completely.
As can be seen from said structure, principle of the present invention is: perforate hole on cabinet (i.e. electromagnetic field leakage portion) is converted into the gap between thin-walled electromagnetic shield door and cabinet, again the gap between thin-walled electromagnetic shield door and cabinet is divided into again artificially two parts that left and right isolates, the right door-plate with form more tractable contact between cabinet panel and stitch, left-hand component is a hinges for body rotation.Motion gap, hinges position is more difficult, by the ingehious design of hinges structure (structure of door-plate 1, cushion block 2, fixed block 3, pivot pin 4 composition), both achieved hinge function, and again the cushion block part in hinges and cabinet panel inwall were formed more tractable contact simultaneously and stitch.On the right of opposite house body, contact seam adopts beryllium brass reed to eliminate gap, increase conductive contact; The contact formed the cushion block part in the hinges of the left side and cabinet panel inwall is stitched to adopt feature contacts surface fine to process and increase and is applied DJB-823 electronics oil soakage layer, strengthen conductive contact, formed with electronic cabinet and conduct electricity non-individual body, thus realize electromagnetic shielding.This design of hinges auxiliary structure part function is multiplexing, and electromagnetic door body structure thinner thickness is really practical for electronic cabinet.
In order to while increase shield door, do not increase the weight of multiple cases, therefore can change the project organization of door-plate, thus alleviated its weight.Mainly through being provided with latticed ribs 11 at the inner face of door-plate 1, simultaneously also the outside of door-plate strip groove 12 can be provided with.Door-plate thickness 1.5mm, frame and middle part are stiffening rib thickness 3mm.So just, while guarantee door-plate 1 has some strength, a lot of weight can be alleviated.So also can the making material of corresponding minimizing door-plate, reduce costs.
In order to optimize shield effectiveness further, prevent door plate deformation or be not closed completely etc. causes electromagnetic leakage, the cross section of conductive spacer 7 can be set to the shape such as zigzag or waveform, increases the contact surface of door-plate 1 and cabinet 6.
Although abovementioned steps achieves structural shielding, but in order to realize better shield effectiveness, also can select the material of each parts, cabinet panel adopts almag plate, and door-plate 1 adopts hot rolled steel plate, and cushion block 2 adopts almag plate, fixed block 3 adopts hot rolled steel plate, pivot pin 4 adopts stainless steel bar, and locking member 5 adopts stainless steel bar, and conductive spacer 7 adopts beryllium brass reed.
In order to make cushion block contact well with cabinet 6, also scribble DJB-823 electronics oil soakage layer at the contact surface of cushion block and cabinet inwall.
When this product of manufacture is installed, first upper and lower two fixed block 3 M3x6 sunk screws are connected fastening with cushion block 2, then by upper lower shaft door-plate 1 installed with fixed block 3 and be connected, form whole door body component, finally by these parts from cabinet inside door-plate 1 part from the vertical elongated slot of front panel (i.e. mounting groove, mounting groove also can be horizontal elongated slot) place release, by M2.5x8 screw cushion block and the fastening installation in the anterior aluminum deck back side.
Present invention achieves gap effectively to process: when this electromagnetic shield door body is in and closes the door tightening state, have 4 between door with anterior aluminum deck and contact gap; Door body is divided into two parts in left and right by left sidecar body hinge through structure nature, door body right-hand component 4 limit is pasted with beryllium brass reed, good with anterior aluminum deck sinking doorframe end face close contact, electrically conductive continuity, door body right-hand component is formed as an electromagnetism airtight cavity be communicated with together with cabinet; Door body left-hand component, because 4 end faces and the aluminum deck back side of cushion block part are fastenedly connected, and has all smeared DJB-823 electronics oil soakage layer after the oxidation of contact surface Precision Machining, surface conductance, thus these 4 contacts to stitch electrically conductive continuitys good; Therefore perforate needed for the function on this electromagnetic shield door body effective shutoff case front panel, maintains whole cabinet and remains a good shielding cavity, thus the equipment of guarantee is to the good anti-leak of electromagnetic signal, anti-tampering!
Meanwhile, the compact practicality of slim door body of the present invention: cushion block, fixed block, pivot pin, door-plate four parts had both completed self basic function, the turning joint of ingenious formation door is secondary again, is effectively processed in gap again simultaneously; Whole combiner is compact, and process and assemble is easy, when not changing original electronic equipment front panel design of material, adds this similar thin electromagnetic shield door, effectively can meet the electromagnetic protection of the anterior function opening of equipment, have good practicality.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, it should be pointed out that all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a thin-walled electromagnetic shield door, in order to the electromagnetic field leakage of shielded electronic equipment shell, it is characterized in that, this shield door comprises door-plate, cushion block, fixed block, pivot pin, locking member and conductive spacer, a mounting groove is offered on the side in electromagnetic field leakage portion, described cushion block is fixed by screws on the inwall of electronic equipment casing, described fixed block is connected and fixed through mounting groove and cushion block, the side of described door-plate is rotationally connected by pivot pin and fixed block, the opposite side of door-plate is connected by locking member and electronic equipment casing are sealed, described conductive spacer is pasted onto door-plate inner face surrounding.
2. a kind of thin-walled electromagnetic shield door according to claim 1, it is characterized in that, the two ends of this fixed block are to the same side to being respectively formed with a lug boss, each lug boss is offered a through hole, the two ends, side of described door-plate also correspondence are respectively provided with a fitting projection portion, each fitting projection portion offers a through hole, described pivot pin is provided with two, and each correspondence connects a lug boss and fitting projection portion.
3. a kind of thin-walled electromagnetic shield door according to claim 1, is characterized in that, the inner face of described door-plate is provided with latticed ribs.
4. a kind of thin-walled electromagnetic shield door according to claim 1, it is characterized in that, the outside of described door-plate is provided with strip groove.
5. a kind of thin-walled electromagnetic shield door according to claim 1, is characterized in that, the cross section of described conductive spacer is zigzag or waveform.
6. a kind of thin-walled electromagnetic shield door according to claim 1 or 5, it is characterized in that, described conductive spacer is beryllium brass reed.
7. a kind of thin-walled electromagnetic shield door according to claim 1, is characterized in that, described locking member is knob bolts.
8. a kind of thin-walled electromagnetic shield door according to claim 1, is characterized in that, the contact surface of described cushion block and the inwall of electronic equipment casing scribbles DJB-823 electronics oil soakage layer.
9. a kind of thin-walled electromagnetic shield door according to claim 1, is characterized in that, described electromagnetic field leakage portion is due to the hole installed and processing needs and offers on electronic equipment casing, gap or window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310389625.7A CN103422794B (en) | 2013-08-30 | 2013-08-30 | A kind of thin-walled electromagnetic shield door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310389625.7A CN103422794B (en) | 2013-08-30 | 2013-08-30 | A kind of thin-walled electromagnetic shield door |
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| Publication Number | Publication Date |
|---|---|
| CN103422794A CN103422794A (en) | 2013-12-04 |
| CN103422794B true CN103422794B (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310389625.7A Active CN103422794B (en) | 2013-08-30 | 2013-08-30 | A kind of thin-walled electromagnetic shield door |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111706231B (en) * | 2020-07-30 | 2021-07-23 | 浙江钱一塔消防科技有限公司 | Prevent fire door convenient to ventilate |
Citations (7)
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|---|---|---|---|---|
| EP0585825A1 (en) * | 1992-08-31 | 1994-03-09 | Canon Kabushiki Kaisha | Electronic apparatus |
| US5913352A (en) * | 1996-08-19 | 1999-06-22 | Windsor Door, Inc. | Hinge and improved hinge and panel surface geometry of a multi-panel door assembly |
| CN2864046Y (en) * | 2005-12-30 | 2007-01-31 | 常州雷宁电磁屏蔽设备有限公司 | Multifunctional shield door |
| CN101592019A (en) * | 2008-05-29 | 2009-12-02 | 安方高科信息安全技术(北京)有限公司 | Electromagnetic shield door |
| CN202000863U (en) * | 2010-12-20 | 2011-10-05 | 西安开容电子技术有限责任公司 | Structure of broadband electromagnetic shielding door with high shielding efficiency |
| CN202421978U (en) * | 2011-12-24 | 2012-09-05 | 天津光电通信技术有限公司 | Low-radiation leak-proof cabinet with opened-closed door structure |
| CN203441320U (en) * | 2013-08-30 | 2014-02-19 | 成都卫士通信息产业股份有限公司 | Thin-wall electromagnetic shielding door |
-
2013
- 2013-08-30 CN CN201310389625.7A patent/CN103422794B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0585825A1 (en) * | 1992-08-31 | 1994-03-09 | Canon Kabushiki Kaisha | Electronic apparatus |
| US5913352A (en) * | 1996-08-19 | 1999-06-22 | Windsor Door, Inc. | Hinge and improved hinge and panel surface geometry of a multi-panel door assembly |
| CN2864046Y (en) * | 2005-12-30 | 2007-01-31 | 常州雷宁电磁屏蔽设备有限公司 | Multifunctional shield door |
| CN101592019A (en) * | 2008-05-29 | 2009-12-02 | 安方高科信息安全技术(北京)有限公司 | Electromagnetic shield door |
| CN202000863U (en) * | 2010-12-20 | 2011-10-05 | 西安开容电子技术有限责任公司 | Structure of broadband electromagnetic shielding door with high shielding efficiency |
| CN202421978U (en) * | 2011-12-24 | 2012-09-05 | 天津光电通信技术有限公司 | Low-radiation leak-proof cabinet with opened-closed door structure |
| CN203441320U (en) * | 2013-08-30 | 2014-02-19 | 成都卫士通信息产业股份有限公司 | Thin-wall electromagnetic shielding door |
Non-Patent Citations (1)
| Title |
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| 电子设备的电磁屏蔽设计;杨明冬;《电子工业专用设备》;20100531(第184期);第47页 * |
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Address after: No. 333, Yunhua Road, Chengdu hi tech Zone, China (Sichuan) pilot Free Trade Zone, Chengdu, Sichuan 610041 Patentee after: China Electronics Technology Network Security Technology Co.,Ltd. Address before: No. 333, Yunhua Road, high tech Zone, Chengdu, Sichuan 610041 Patentee before: CHENGDU WESTONE INFORMATION INDUSTRY Inc. |
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