CN201039603Y - Electromagnetic shielding cabinet - Google Patents
Electromagnetic shielding cabinet Download PDFInfo
- Publication number
- CN201039603Y CN201039603Y CNU200720104011XU CN200720104011U CN201039603Y CN 201039603 Y CN201039603 Y CN 201039603Y CN U200720104011X U CNU200720104011X U CN U200720104011XU CN 200720104011 U CN200720104011 U CN 200720104011U CN 201039603 Y CN201039603 Y CN 201039603Y
- Authority
- CN
- China
- Prior art keywords
- qianmen
- shielding
- conducting material
- elastic conducting
- front door
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model provides an electromagnetic screen machine cabinet with a two-point contact type cabinet door, and comprises a front door, a frame embedded when the front door is closed, and an elastic conducting material. The elastic conducting material is positioned on the periphery of the inside of the front door and corresponding to the frame position. When the front door is closed, the elastic conducting material and the frame are contacted, and a metal plate positioned on the periphery of the inside of the front door is contacted with the front door in a conduction manner. One side edge of the metal plate is separated from the inside of the front door to form a protruding part. The periphery on the inside of the frame is provided with a screen spring plate, which leads the metal plate and the screen spring plate to be contacted with each other when the front door is closed. Adopting the method of the utility model ensures the full contact for the cabinet and the frame under the condition of no obviously increasing the cost, thereby leading the reliability of the screen to be greatly improved and synchronously having the effect of reinforcing the cabinet. The electromagnetic screen machine cabinet of the utility model has the advantages of excellent performance when the size of a cabinet body is bigger or on an occasion having high requirement for the bearing of the cabinet body.
Description
Technical field
The present invention relates to the electromagnetic shielding rack, be specifically related to be used for the electromagnetic shielding rack of medical field.
Background technology
The electromagnetic shielding rack is applicable to the interference that prevents outer bound pair information data transmission switching system, can guarantee server, switch, display, cipher machine and relevant device working stability and information privacy; It can effectively suppress industry and external electromagnetic field to the interference of cabinet inner electronic equipment, prevent the leakage of secret electronic information simultaneously.
In medical field, the electromagnetic shielding rack is mainly used in the hospital that instrument system is installed and medical procedure Control Room, supersonic diagnostic set, nuclear magnetic resonance apparatus, CT main frame accessory, the information chamber that prevents the leakage of data message, momentous conference chamber, hospital, laboratory, electromagnetic radiation protection chamber or the like.The electromagnetic shielding rack can prevent the information leakage of indoor Information Technology Equipment, prevent in the extraneous transient noise inlet chamber, the ELECTROMAGNETIC RADIATION SIGNATURE that system produce is disturbed, causes the system or equipment misoperation and prevents indoor electric subset or system leaks into outdoor, and electronic equipment is on every side caused interference.Than the electromagnetic shielding rack that electronic communication field is used, electro-medical magnetic screen rack all has stricter requirement at aspects such as bearing, sealing, electromagnetic wave shieldings.
The electromagnetic shielding rack adopts loam cake, left side plate, the structure at back plate and Qianmen more at present.The good and bad main shielding mode that depends on door of whole rack shielding properties.This is to adopt the fixed installation mode because of left side plate, back plate, loam cake, as long as and the corresponding shielding material of filling between the framework, the general shielding properties that can not influence rack, and door belongs to the parts of often opening, have big gap when mounted, so the good and bad of door shielding connects the shielding properties of the whole rack of influence.The mode that cabinet door (also the claiming the Qianmen) shielding of electromagnetic shielding rack is adopted usually on the market is that the tooled joint between cabinet door and frame contact position and the cabinet door is all filled elastic conducting material, for example conductive fabric, conducting foam etc. now.This single shielding mode causes its capability of electromagnetic shielding relatively poor, and particularly after multiple switching cabinet door, the elasticity of elastic conducting material and sealing all can variation, thereby can't realize stablizing advantages of favorable electromagnetic shielding effect.
Summary of the invention
The present invention aims to provide a kind of novel electromagnetic shielding rack, thereby realizes more reliable and stable effectiveness.
The invention provides a kind of electromagnetic shielding rack, comprise the Qianmen; Embedded framework when closed at the Qianmen; Elastic conducting material, this elastic conducting material are established around the periphery of inboard, Qianmen and corresponding with the position of framework, and when the Qianmen was closed, elastic conducting material contacted with framework; If the metallic plate of around the periphery of inboard, Qianmen, metallic plate contacts with the Qianmen conduction, and a side of metallic plate and the inboard at Qianmen are separated and form bossing; Locate to establish the shielding finger of around in the framework inboard, make that metallic plate contacts with shielding finger when the Qianmen is closed.
According to a further aspect in the invention, the material of above-mentioned shielding finger is a metal.
According to a further aspect in the invention, the material of above-mentioned shielding finger is a beryllium copper.
According to a further aspect in the invention, to be selected from plane, cambered surface and inclined-plane wherein any for the shape of above-mentioned bossing.
According to a further aspect in the invention, described metallic plate is established the inboard of at described elastic conducting material.
According to a further aspect in the invention, described metallic plate is near a side place of described elastic conducting material, and the inboard at described metallic plate and described Qianmen is separated and perk, forms described bossing.
The present invention improves the shielding mode of rack cabinet door.Different from the past single method that adopts elastic conducting material sealed cabinet door the invention provides a kind of 2 contact screen methods that combine shielding finger and elastic conducting material.The shielding properties of shielding finger is higher than the general rack of elastic conducting material that adopts, and the way of contact that still keeps conductive elastomer simultaneously makes Door of communication apparatus cabinet that 2 contacts be arranged, and the shielding reliability is stronger, and shielding properties is better.In addition, the shielding properties of shielding finger is better than elastic conducting material, and the high compression rate of elastic conducting material has also played good sealing function.By the actual installation test, the installation of shielding strip is also very convenient.Electromagnetic shielding rack provided by the invention is not significantly improving under the condition of cost, and the performance of more existing electromagnetic shielding rack at aspects such as electromagnetic shielding, sealings all is significantly increased.
Description of drawings
Cross-sectional top view when Fig. 1 schematically shows electromagnetic shielding rack according to the present invention and opens at the Qianmen;
Fig. 2 schematically shows the cross-sectional top view of electromagnetic shielding rack according to the present invention when the closure of Qianmen.
Embodiment
Describe the present invention in detail below in conjunction with accompanying drawing.Shielding rack of the present invention adopts the frame structure of integral solder, and all direction panels comprise that loam cake, left side plate, back plate and Qianmen are separately fixed in each face of framework with bolt or mode well known to those skilled in the art.For the effect of further guaranteeing to shield, all direction panels all are connected with lead between any two, are a conducting housing to guarantee whole rack.
All fill with elastic conducting material in loam cake, left side plate, back plate, the Qianmen each and the contact position of framework, and the tooled joint place between each panel.Elastic conducting material for example can be conducting foam or conductive fabric.The compression ratio height of elastic conducting material can conduct electricity contact after fixing reliably, thereby realizes shielding the effect of whole cabinet.
In view of the good and bad main Qianmen shielding mode of (also claiming the cabinet door) that depends on of whole rack shielding properties, the shielding mode at Door of communication apparatus cabinet improves in the present invention.Particularly, on original basis of touching that is conductively connected by elastic conducting material, increased the way of contact again by shielding finger.By around the inboard of the framework embedded shielding finger being installed at the Qianmen, metallic plate is installed around the periphery of inboard, Qianmen simultaneously, when closed, metallic plate is contacted at the Qianmen with shielding finger, touch thereby realized being conductively connected by shielding finger.2 contact screen methods that this elastic conducting material adds shielding finger have been guaranteed fully contacting of Qianmen and framework, and the reliability of shielding is greatly improved.Simultaneously, inboard, the Qianmen metallic plate of establishing has also played the effect of reinforcing the Qianmen, preventing Qianmen deformation.Particularly in the occasion that the cabinet size is big or load-bearing has high requirements for cabinet, be very necessary for the reinforcing at Qianmen.
Because metallic plate of the present invention and shielding finger all are evenly to establish around Qianmen and framework, and about being, symmetrical, therefore only to open a side with the Qianmen parallel with door-hinge below be that example describes.Cross-sectional top view when Fig. 1 shows electromagnetic shielding rack according to the present invention and opens at the Qianmen.Fig. 2 shows the cross-sectional top view of electromagnetic shielding rack according to the present invention when the closure of Qianmen.There is shown Qianmen 1, side plate 2, shielding finger 3, metallic plate 4, framework 5, elastic conducting material 6.
Locate to establish elastic conducting material 6, for example conducting foam or conductive fabric around the periphery of 1 inboard at the Qianmen.The respective side of embedded framework is corresponding during position and Qianmen 1 closure at these elastic conducting material 6 places, and the length of the framework of the length of its each side of Qianmen and institute's respective side about equally.As shown in Figure 2, when the Qianmen was closed, this elastic conducting material 6 contacted with framework 5.
Establish metallic plate 4 in the inboard of elastic conducting material 6, elastic conducting material 6 is between door and metallic plate 4.Metallic plate 4 and the elastic conducting material 6 parallel of putting of corresponding positions that are positioned at its outside.Metallic plate 4 contacts with Qianmen 1 conduction, can fix by screw riveted joint or similar fashion.As shown in Figure 1, at the side place of metallic plate 4 near elastic conducting material 6, metallic plate 4 is separated and perk with the inboard at Qianmen 1, forms bossing 7.In Fig. 1, the shape of this bossing is the plane parallel with framework, it will be apparent for a person skilled in the art that this shape also can be a cambered surface, and other shapes such as inclined-plane fully contact with shielding finger 3 when closed as long as satisfy at the Qianmen 1.Establishing around the inboard of framework 5 has shielding finger 3, the length of the length of the shielding finger 3 of framework 5 each side and Qianmen 1 inboard corresponding metallic plate 4 about equally, its is designed to that shielding finger 3 contacts with bossing 7 when closed Qianmen 1.Shielding finger 3 also can be spliced by the short small-sized reed of a plurality of length.The material of shielding finger 3 is a metal, is connected with the conduction at Qianmen 1 to guarantee framework 5, for example, can select the beryllium copper material for use.Shielding finger 3 can be fixed on the framework 5 in many ways, for example sticks on the framework 5, and perhaps the structure by similar dop fixes on framework 5.
Fig. 2 shows the Qianmen of the electromagnetic shielding rack cross-sectional top view when closed.As shown in Figure 2, when 1 closure of Qianmen, bossing 7 contact shielding springs 3, and extruding shielding spring 3 makes it direction A generation deformation.Distance when the deformation degree of shielding spring 3 depends on the Qianmen closure between bossing 7 and the framework 5, that is, bossing 7 is near more apart from framework 5, and the deformation degree of shielding spring 3 is big more.In the present invention, require the deformation degree of shielding spring 3 approximately between the 10%-40%.For example, if the height h (as shown in Figure 2) of shielding spring 3 is 8mm, then when bossing 7 contact shielding springs 3, it is feasible making the extremely about 7.2mm-4.8mm of shielding spring 3 deformation.If the deformation degree of shielding spring 3 is too small, for example less than 10%, then can cause bossing 7 abundant inadequately with contacting of shielding spring 3, the wearing and tearing along with parts in use may cause and can't contact, thereby can't realize reliable shield effectiveness.If the deformation degree of shielding spring 3 is excessive, for example greater than 50%, then can be owing to the stressed excessive deformation that causes shielding spring 3 to meet accident of shielding spring 3, and have the danger that comes off from framework 5.The long-term excessive stressed elasticity variation that also can cause shielding spring 3, thus shield effectiveness is descended.
Adopt this 2 contact screen methods of the present invention, do not enlarging markedly under the condition of cost, guaranteed fully contacting of cabinet door and framework, the reliability of shielding is greatly improved.Simultaneously, metallic plate of the present invention has also played the effect of reinforcing the cabinet door.In the occasion that the cabinet size is big or load-bearing has high requirements for cabinet, more existing its performance advantage of electromagnetic shielding rack of the present invention is very significant.
Foregoing description is one embodiment of the present of invention, it is evident that, other modification of this embodiment or change also should drop within the spirit and scope of the present invention.For example, the shape of bossing can be cambered surface, inclined-plane etc., and the material of shielding finger can be the material beyond the beryllium copper, fully conducts electricity with shielding finger and contacts as long as satisfy bossing.
Claims (6)
1. electromagnetic shielding rack comprises:
-Qianmen (1);
-embedded framework (5) when closed in described Qianmen (1);
-elastic conducting material (6), described elastic conducting material (6) is arranged on around the inboard periphery, described Qianmen (1) and is corresponding with the position of described framework (5), when described Qianmen (1) was closed, described elastic conducting material (6) contacted with described framework (5);
It is characterized in that,
The periphery inboard in described Qianmen (1) is provided with a metallic plate (4) all around, and described metallic plate (4) contacts with described Qianmen (1) conduction, and the inboard of a side of described metallic plate (4) and described Qianmen (1) is separated and forms a bossing (7);
Around described framework (5) is inboard, locate to be provided with a shielding finger (3), make that described metallic plate (4) contacts with described shielding finger (3) when described Qianmen (1) is closed.
2. electromagnetic shielding rack according to claim 1 is characterized in that, the material of described shielding finger (3) is a metal.
3. electromagnetic shielding rack according to claim 1 and 2 is characterized in that, the material of described shielding finger (3) is a beryllium copper.
4. electromagnetic shielding rack according to claim 1 and 2 is characterized in that, described bossing (7) be shaped as wherein any one of plane, cambered surface and inclined-plane.
5. electromagnetic shielding rack according to claim 1 is characterized in that, described metallic plate (4) is arranged on the inboard of described elastic conducting material (6).
6. electromagnetic shielding rack according to claim 5, it is characterized in that, described metallic plate (4) is near a side place of described elastic conducting material (6), and described metallic plate (4) is separated and perk with the inboard at described Qianmen (1), forms described bossing (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720104011XU CN201039603Y (en) | 2007-03-29 | 2007-03-29 | Electromagnetic shielding cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720104011XU CN201039603Y (en) | 2007-03-29 | 2007-03-29 | Electromagnetic shielding cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201039603Y true CN201039603Y (en) | 2008-03-19 |
Family
ID=39212133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720104011XU Expired - Lifetime CN201039603Y (en) | 2007-03-29 | 2007-03-29 | Electromagnetic shielding cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201039603Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102577656A (en) * | 2010-04-20 | 2012-07-11 | 安特精密科技有限公司 | Electromagnetic interference shielding arrangement |
| CN103442545A (en) * | 2013-08-29 | 2013-12-11 | 陕西海泰电子有限责任公司 | Door-opening shielding device of magnetic shielding equipment case/ cabinet |
| CN103490281A (en) * | 2013-09-27 | 2014-01-01 | 国家电网公司 | Spark gap trigger control box used for series compensation |
| CN105431026A (en) * | 2015-12-30 | 2016-03-23 | 镇江船舶电器有限责任公司 | Electromagnetic compatible shielding structure |
| CN107724909A (en) * | 2017-09-29 | 2018-02-23 | 株洲合力电磁技术有限公司 | A kind of high-performance knife inserts formula list fan shielding vertical hinged door |
| CN108235674A (en) * | 2018-01-22 | 2018-06-29 | 合肥美的智能科技有限公司 | sales counter |
| CN108933538A (en) * | 2018-08-22 | 2018-12-04 | 中车青岛四方车辆研究所有限公司 | Inverter electromagnetic compatibility case |
| CN109859380A (en) * | 2019-01-09 | 2019-06-07 | 澳柯玛股份有限公司 | A kind of unmanned selling cabinet preventing internal RF ID electromagnetic wave leakage |
-
2007
- 2007-03-29 CN CNU200720104011XU patent/CN201039603Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102577656A (en) * | 2010-04-20 | 2012-07-11 | 安特精密科技有限公司 | Electromagnetic interference shielding arrangement |
| CN102577656B (en) * | 2010-04-20 | 2016-01-20 | 怡得乐精密机械（新加坡）有限公司 | Electromagnetic interference shield configures |
| CN103442545A (en) * | 2013-08-29 | 2013-12-11 | 陕西海泰电子有限责任公司 | Door-opening shielding device of magnetic shielding equipment case/ cabinet |
| CN103490281A (en) * | 2013-09-27 | 2014-01-01 | 国家电网公司 | Spark gap trigger control box used for series compensation |
| CN103490281B (en) * | 2013-09-27 | 2015-04-29 | 国家电网公司 | Spark gap trigger control box used for series compensation |
| CN105431026A (en) * | 2015-12-30 | 2016-03-23 | 镇江船舶电器有限责任公司 | Electromagnetic compatible shielding structure |
| CN107724909A (en) * | 2017-09-29 | 2018-02-23 | 株洲合力电磁技术有限公司 | A kind of high-performance knife inserts formula list fan shielding vertical hinged door |
| CN108235674A (en) * | 2018-01-22 | 2018-06-29 | 合肥美的智能科技有限公司 | sales counter |
| CN108933538A (en) * | 2018-08-22 | 2018-12-04 | 中车青岛四方车辆研究所有限公司 | Inverter electromagnetic compatibility case |
| CN109859380A (en) * | 2019-01-09 | 2019-06-07 | 澳柯玛股份有限公司 | A kind of unmanned selling cabinet preventing internal RF ID electromagnetic wave leakage |
| CN109859380B (en) * | 2019-01-09 | 2021-05-07 | 澳柯玛股份有限公司 | Unmanned selling cabinet capable of preventing internal RFID electromagnetic wave leakage |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201039603Y (en) | Electromagnetic shielding cabinet | |
| JPH04506283A (en) | shielded personal computer | |
| CN206365182U (en) | Housing unit and terminal | |
| CN203151938U (en) | Shielding device for displayer | |
| CN214014774U (en) | Shielding rubber sealing strip for electronic cabinet | |
| CN207977995U (en) | Terminal | |
| CN109920325A (en) | A kind of portable display | |
| CN208709555U (en) | Cooking utensil | |
| CN201846101U (en) | Nuclear electromagnetic pulse prevention EPS (Electric Power Storage) power supply | |
| CN110972427B (en) | Case suitable for complex environment | |
| CN206094495U (en) | Apron, air conditioner casing and air conditioner | |
| CN209845640U (en) | Electromagnetic shielding device for reinforcing notebook computer display screen | |
| CN209510148U (en) | A kind of electromagnetic shielding door seal | |
| CN207744265U (en) | Display device and its shell structure | |
| CN201590504U (en) | Conductive fabric grounding device between relatively moving metal components in mobile phone | |
| CN208111673U (en) | Electronic equipment and its elastic slice component, elastic slice | |
| CN206923178U (en) | Elevator control cabinet | |
| CN218072296U (en) | Electromagnetic shielding cabinet | |
| CN106773197A (en) | A kind of display of use EN-EMC glass | |
| RU2407251C1 (en) | Screening device of information displaying units | |
| CN216435341U (en) | Display device | |
| CN203441320U (en) | Thin-wall electromagnetic shielding door | |
| CN214281991U (en) | Intelligent cabinet shielding door with shielding window | |
| CN213875755U (en) | Radio frequency connector protection organic glass plate in test machine circuit board | |
| CN216958945U (en) | Automatic switch board of anticreep structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI SIEMENS MEDICAL INSTRUMENTS CO., LTD. Free format text: FORMER OWNER: SIEMENS (CHINA) AG Effective date: 20080418 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080418 Address after: Zhou Zhu Road, Nanhui District, Shanghai, 278, post code: 201318 Patentee after: Siemens Shanghai Medical Equipment Co., Ltd. Address before: No. 7, South Central Road, Wangjing, Beijing, Chaoyang District: 100102 Patentee before: Simens Co., Ltd. (China) |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080319 |
|
| CX01 | Expiry of patent term |