CN103369895A - Electromagnetic shielding cabinet - Google Patents
Electromagnetic shielding cabinet Download PDFInfo
- Publication number
- CN103369895A CN103369895A CN2013103351503A CN201310335150A CN103369895A CN 103369895 A CN103369895 A CN 103369895A CN 2013103351503 A CN2013103351503 A CN 2013103351503A CN 201310335150 A CN201310335150 A CN 201310335150A CN 103369895 A CN103369895 A CN 103369895A
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- cabinet
- electromagnetic shielding
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Abstract
The invention discloses an electromagnetic shielding cabinet. The electromagnetic shielding cabinet comprises a cabinet body and a cabinet door which have an electromagnetic shielding function, a display and/or operation component arranged outside the cabinet body and/or the cabinet door, a cover body which has an electromagnetic shielding function and is arranged inside the cabinet body and/or the cabinet door corresponding to the display and/or operation component, and a connecting element used for connecting the display and/or operation component and in-cabinet equipment on the cover body, wherein the cover body is fixed inside the cabinet body and/or the cabinet door. By the electromagnetic shielding cabinet, the problem that electromagnetic waves in and out of cabinet interfere with each other through holes and cracks formed by the existence of the display and/operation component on the cabinet body and/or cabinet door in the prior art is solved effectively, so that the electromagnetic shielding effect of the electromagnetic shielding cabinet is enhanced; and therefore, the reliability and the stability of electronic equipment in and out of the cabinet are improved.
Description
Technical field
The present invention relates to electric field, relate in particular to a kind of electromagnetic shielding cabinet.
Background technology
Electromagnetic shielding refers to isolate between two and the above area of space, to prevent one of them regional Electric and magnetic fields to outdiffusion, prevents that simultaneously other regional Electric and magnetic fields from disturbing this zone.A lot of cabinets that are used for electronics or electrical control all need to carry out electromagnetic shielding at present, its objective is and prevent that cabinet is interior, cabinet exoelectron equipment carries out electromagnetic interference each other, strengthen inside and outside the cabinet especially stability and the reliability of cabinet inner electronic equipment, particularly in fields such as boats and ships and locomotives, significant especially.
The cabinet that is used for electronics or electrical control generally all has cabinet and cabinet door, in order to make described cabinet for electronics or electrical control have electro-magnetic screen function, prior art can adopt electric conducting material to make cabinet and cabinet door usually, form an electromagnetic shield, when electromagnetic wave arrives cabinet and cabinet door, because anti-resistance is discontinuous on air and the shield interface, incident wave is produced reflection; Do not fallen by surface reflection and enter the electromagnetic wave of shield, in the process of propagating forward in vivo, the conductively-closed material is decayed, namely absorption; The dump energy that in shield, does not attenuate, when passing to another surface of material, run into the discontinuous interface of the anti-resistance of air and shield, can form again secondary reflection, and return in the shield, may there be Multi reflection on this inside and outside interface that is reflected in shield, and then the decay electromagnetic wave.In a word, the electromagnetic shield that the cabinet of being made by electric conducting material and cabinet door form mainly is based on electromagnetic reflection and absorption electromagnetic decay inside and outside the cabinet.
Yet, along with the raising of people to the man-machine interface requirement, on increasing cabinet door or the cabinet demonstration and/or the Operand devices such as lamp, button are installed, these components and parts itself do not have electro-magnetic screen function, and because the existence of these components and parts can cause on cabinet door or the cabinet and form hole, and form the slit between components and parts and cabinet door or the cabinet, electromagnetic leakage occurs, cause the effectiveness of shield to reduce, thereby reduce the reliability and stability of the inside and outside electronic equipment of cabinet.
Summary of the invention
In order to address the above problem, the invention provides a kind of electromagnetic shielding cabinet, described electromagnetic shielding cabinet comprises:
Cabinet and cabinet door with electro-magnetic screen function, and the demonstration and/or the Operand device that are installed in cabinet and/or cabinet outer side of door, it is characterized in that, described electromagnetic shielding cabinet also comprises: the cabinet corresponding with demonstration and/or Operand device and/or cabinet door inboard have the cover body of electro-magnetic screen function, be connected the Connection Element that is used for connecting equipment in demonstration and/or Operand device and the cabinet with cover body, wherein said cover body is fixed on the inboard of cabinet and/or cabinet door.
Preferably, described cover body is split type, specifically comprises box body and lid, removably connects between described box body and the lid; Or,
Described cover body is integral type.
Preferably, the liner with electromagnetic shielding action is set between described box body and the lid.
Preferably, described liner with electromagnetic shielding action is conductive rubber, metal knitted mesh pad or beryllium copper reed.
Preferably, described Connection Element for connecting equipment in demonstration and/or Operand device and the cabinet is arranged on lid.
Preferably, described Connection Element comprises the plugs and sockets with function of shielding.
Preferably, described cover body is made by electric conducting material.
Preferably, described electric conducting material is metal.
Preferably, the described cover body inboard that is fixed on cabinet and/or cabinet door is specially:
Weld the inboard of described cover body and cabinet and/or cabinet door.
Preferably, described electromagnetic shielding cabinet is electrical control cubicles.
The invention provides a kind of electromagnetic shielding cabinet, cabinet and/or cabinet door inboard that described electromagnetic shielding cabinet employing is corresponding with demonstration and/or Operand device are provided with the cover body with electro-magnetic screen function, so that cover body with have the cabinet of function of shielding and cabinet door and form a comparatively complete shield, efficiently solve in the prior art in the cabinet, outer electromagnetic wave by on cabinet and/or the cabinet door because show and/or problem that mutually mutual interference is carried out in hole that the existence of Operand device produces and slit, so that the effectiveness of electromagnetic shielding cabinet enhancing, thereby the reliability and stability of the inside and outside electronic equipment of raising cabinet.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, the accompanying drawing that the following describes only is some embodiment that put down in writing among the application, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the outside space frame figure of a kind of electromagnetic shielding cabinet of the embodiment of the invention;
Fig. 2 is the inside stand body frame figure of a kind of electromagnetic shielding cabinet of the embodiment of the invention;
Fig. 3 is the side sectional view of a kind of electromagnetic shielding cabinet of the embodiment of the invention.
Embodiment
In order to make those skilled in the art person understand better the present invention program, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, 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 belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The invention provides a kind of electromagnetic shielding cabinet, in the present embodiment, in conjunction with concrete scene, described electromagnetic shielding cabinet is electrical control cubicles.Electrical control cubicles is by the electrical wiring requirement switchgear, measuring instrument, protection electrical equipment and auxiliary equipment to be assembled in sealing or the semiclosed cabinet, is usually used in each, joins, in the electric substation.
At present with showing and/or cabinet and the cabinet door of the electrical control cubicles of Operand device adopt electric conducting material, so that the inside and outside electromagnetic wave of cabinet and cabinet door repeatedly reflects and absorbs in shield surface that cabinet and cabinet door form and shield, thereby in the decay cabinet outside cabinet or the electromagnetic wave of radiation in the export-oriented cabinet of cabinet, reduce the inside and outside electromagnetic interference of cabinet, thereby stability and the reliability of the inside and outside electronic equipment of enhancing cabinet, wherein cabinet is the part except the cabinet door.
Yet since on the cabinet of increasing electrical control cubicles or the cabinet door with showing and/or Operand device (generally being present on the cabinet door) so that have hole on cabinet or the cabinet door, and have the slit between demonstration and/or Operand device and cabinet or the cabinet door.When the width in the diameter of hole and slit greater than electromagnetic wavelength 1/2 the time, electromagnetic wave can directly be gone out from hole or gap radiation; When the width in the diameter of hole and slit less than electromagnetic wavelength 1/2 the time, the electromagnetic wave that radiate can be along with hole diameter or reducing of gap width and is weak gradually.And the diameter of cabinet door or hole cashier's office in a shop and and demonstration and/or Operand device between the width in slit often greater than 1/2 of electromagnetic wavelength, the inside and outside electromagnetic wave of cabinet can directly carry out mutually mutual interference by these holes with the slit, thereby badly influences the effectiveness of electrical control cubicles.Demonstration and/or Operand device on electrical control cubicles cabinet or the cabinet door are more, and hole and slit are just more, and the effectiveness of electrical control cubicles is just poorer.
The defective that exists in order to solve prior art, the electrical control cubicles that the embodiment of the invention provides comprises cabinet 2, cabinet door 1, and the indicator light 3 and the button 4 that are installed in cabinet door 1 outside, referring to Fig. 1.Described electrical control cubicles also comprises: the cabinet door inboard corresponding with indicator light 3 and button 4 has the cover body of electro-magnetic screen function, is connected the Connection Element that is used for connecting equipment in indicator light 3 and button 4 and the cabinet with cover body, and it is inboard that wherein said cover body is fixed on the cabinet door.
In the present embodiment, indicator light 3 is the display element device, and button 4 is the Operand device.Described display element device can also be light-emitting diode, display screen etc.; Described Operand device can also be button, switch etc., and the present invention does not do concrete restriction.In the present embodiment, indicator light 3 and button 4 are installed in the cabinet outer side of door, in actual applications, if necessary, also can be installed in the cabinet outside, and the present invention does not do concrete restriction.
In the present embodiment, the inboard cover body with electro-magnetic screen function that arranges of the cabinet door corresponding with indicator light 3 and button 4 positions.Certainly, if indicator light 3 and button 4 are installed on the cabinet, it is inboard that described cover body with electro-magnetic screen function also is arranged on the cabinet corresponding with its position thereupon.Why cover body is arranged on the electrical control cubicles inboard, because when the Operand device being operated or the display element device observed, do not need to open cover body, simple and convenient, the more important thing is not have the problem that the inside and outside electromagnetic wave of electrical control cubicles still carries out the phase mutual interference when opening cover body.
Described cover body can be integral type, also can be split type.When cover body is integral type, it is inboard that cover body is fixed on the cabinet door.Fixing mode comprises detachable fixing and non-dismountable fixing, and non-dismountable welding, riveted joint, the bonding etc. of fixedly comprising comprise fixedly that detachably bolt connects, sells connection, snap close connection etc.
For attractive in appearance and be beneficial to installation and maintenance to indicator light 3 and button 4, the preferred cover body of the present embodiment is split type, and referring to Fig. 2 and Fig. 3, described cover body comprises box body 5 and lid 6.Described box body 5 is fixed on cabinet door 1 inboard, comprises detachable fixing and non-dismountable fixing, and in order to reduce the slit on the cabinet door 1, so that the shield effectiveness of electrical control cubicles is better, preferred box body 5 welds with cabinet door 1 inboard, and is namely non-dismountable fixing.Detachably be fixedly connected with between described box body 5 and the lid 6, preferred, adopt bolt 7 to connect.
In the present embodiment, described box body 5 has electro-magnetic screen function with lid 6, namely adopt electromagnetic shielding material to make, such as metal, silicon nickel alloy, conducting high polymers thing etc., can also carry out the brushing conductive paint on box body 5 and lid 6 surfaces, perhaps other makes box body 5 and lid 6 have the mode of electro-magnetic screen function, and the present invention does not do concrete restriction.
Because having the box body 5 of function of shielding covers indicator light 3 and button 4 with lid 6, thereby form a comparatively tight shield with the cabinet door, so that being isolated from the outside, the interior equipment of cabinet comes, reached and prevented the effect of carrying out mutually mutual interference by the hole on the cabinet door and slit between the inside and outside electronic equipment of electrical control cubicles, improve the electromagnetic shielding ability of electrical control cubicles, strengthened stability and the reliability of the inside and outside equipment of cabinet.
For so that box body 5 is better with the effectiveness of lid 6, adopt the liner with electro-magnetic screen function between preferred box body 5 and the lid 6, described liner with electro-magnetic screen function comprises metal establishment mesh pad, beryllium copper reed and conductive rubber etc.
Wherein, conductive rubber is that the conductive particles such as glass silvering, aluminium be silver-plated, silver-colored are evenly distributed in the silicon rubber, makes the conductive particle contact by pressure, reaches good electric conductivity.When the conductive particle of filling in the conductive rubber is filled to the certain volume umber, be in contact with one another between the conductive particle, form the electronics continuous state, when outside electromagnetic field to the conductive rubber when outside, strong electromagnetic wave reaches on the conductive particle free electron, the free electron free movement, in free electron free movement process, form the electromagnetic field opposite with external electromagnetic field, interior external electromagnetic field is cancelled out each other, and reaches the effect that weakens electromagnetic interference wave.In addition, conductive rubber also has sealing function, reduces the gap width between box body 5 and the lid 6, plays the effect of electromagnetic shielding.So in the present embodiment, preferred conductive rubber 8 is attached on the contact-making surface between box body 5 and the lid 6, as the liner between box body 5 and the lid 6.
In the present embodiment, described electrical control cubicles also comprises and is arranged on the cover body Connection Element that is used for connecting equipment in indicator light 3 and button 4 and the cabinet, described Connection Element comprises plugs and sockets 9, described plugs and sockets 9 refers to that an end is socket, are connected with button with indicator light 3 and are connected, the other end is plug, with the components and parts of equipment connection in the cabinet.Described Connection Element can also comprise that other can connect that indicator light 3 and button 4 etc. show and/or the components and parts of Operand device and the interior equipment of cabinet, and the present invention does not do concrete restriction.
Described plugs and sockets 9 can be filter connector that has electro-magnetic screen function etc., it also can be electric connector that does not have electro-magnetic screen function etc., if plugs and sockets 9 is latter, for so that electromagnetic wave does not carry out phase mutual interference inside and outside the cabinet by plugs and sockets 9, this plugs and sockets 9 can adopt electromagnetic shielding material to make, such as metal, silicon nickel alloy, conducting high polymers thing etc., can also outside plugs and sockets 9, carry out the brushing conductive paint, perhaps other makes plugs and sockets 9 have the mode of electro-magnetic screen function, and the present invention does not do concrete restriction.
In the present embodiment, the display element device that is arranged on the cabinet door has one, and namely indicator light 3, the Operand device also is one, and namely button 4, in actual applications, show and/or the Operand device may only have altogether one to have a plurality ofly, the present invention does not do concrete restriction yet.In the situation that demonstration and/or Operand device have a plurality of, can be provided with box body 5 and lid 6 in each demonstration and/or the position corresponding to Operand device of cabinet door inboard, and be respectively arranged with plugs and sockets 9 with electro-magnetic screen function at each lid 6, certainly, box body 5 and lid 6 also can replace with other cover bodies, plugs and sockets 9 also can replace with other Connection Elements, and the present invention does not do concrete restriction.
In addition, in the present embodiment, described box body 5 is cuboid, described lid 6 is the rectangle supporting with box body 5, in actual applications, the shape of other cover bodies of described replacement box body 5 and lid 6 can be square or cuboid, can also be " bowl " shape and other regular or irregular shapes, be determined on a case-by-case basis, the present invention does not do concrete restriction.
The above only is the specific embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. electromagnetic shielding cabinet, comprise cabinet and cabinet door with electro-magnetic screen function, and the demonstration and/or the Operand device that are installed in cabinet and/or cabinet outer side of door, it is characterized in that, described electromagnetic shielding cabinet also comprises: the cabinet corresponding with demonstration and/or Operand device and/or cabinet door inboard have the cover body of electro-magnetic screen function, be connected the Connection Element that is used for connecting equipment in demonstration and/or Operand device and the cabinet with cover body, wherein said cover body is fixed on the inboard of cabinet and/or cabinet door.
2. electromagnetic shielding cabinet according to claim 1 is characterized in that, described cover body is split type, specifically comprises box body and lid, removably connects between described box body and the lid; Or,
Described cover body is integral type.
3. electromagnetic shielding cabinet according to claim 2 is characterized in that, the liner with electromagnetic shielding action is set between described box body and the lid.
4. electromagnetic shielding cabinet according to claim 3 is characterized in that, described liner with electromagnetic shielding action is conductive rubber, metal knitted mesh pad or beryllium copper reed.
5. electromagnetic shielding cabinet according to claim 4 is characterized in that, described Connection Element for connecting equipment in demonstration and/or Operand device and the cabinet is arranged on lid.
6. according to claim 1 to the described electromagnetic shielding cabinet of 5 any one, it is characterized in that, described Connection Element comprises the plugs and sockets with function of shielding.
7. electromagnetic shielding cabinet according to claim 1 is characterized in that, described cover body is made by electric conducting material.
8. electromagnetic shielding cabinet according to claim 7 is characterized in that, described electric conducting material is metal.
9. electromagnetic shielding cabinet according to claim 1 is characterized in that, the inboard that described cover body is fixed on cabinet and/or cabinet door is specially:
Weld the inboard of described cover body and cabinet and/or cabinet door.
10. electromagnetic shielding cabinet according to claim 1 is characterized in that, described electromagnetic shielding cabinet is electrical control cubicles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103351503A CN103369895A (en) | 2013-08-02 | 2013-08-02 | Electromagnetic shielding cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103351503A CN103369895A (en) | 2013-08-02 | 2013-08-02 | Electromagnetic shielding cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103369895A true CN103369895A (en) | 2013-10-23 |
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ID=49370101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103351503A Pending CN103369895A (en) | 2013-08-02 | 2013-08-02 | Electromagnetic shielding cabinet |
Country Status (1)
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| CN (1) | CN103369895A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104774566A (en) * | 2015-05-08 | 2015-07-15 | 南通长航船舶配件有限公司 | Automatic control device of ship |
| CN106255400A (en) * | 2016-10-21 | 2016-12-21 | 苏州江南航天机电工业有限公司 | Electromagnetic screen and distribution box |
| CN106304821A (en) * | 2016-10-21 | 2017-01-04 | 苏州江南航天机电工业有限公司 | Electromagnetic vehicle screening arrangement |
| CN107018647A (en) * | 2017-05-24 | 2017-08-04 | 合肥工业大学 | A kind of multilayer electromagnetic shielding cabinet with special teeth groove, arc-shaped slot structure |
| CN111525532A (en) * | 2020-04-29 | 2020-08-11 | 厦门鼎芯科技有限公司 | Three-way electromagnetic shielding control box |
| CN115426865A (en) * | 2022-08-22 | 2022-12-02 | 广州国保科技有限公司 | Mobile phone shielding cabinet |
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| CN2879599Y (en) * | 2006-02-07 | 2007-03-14 | 华为技术有限公司 | Panel line-outgoing equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104774566A (en) * | 2015-05-08 | 2015-07-15 | 南通长航船舶配件有限公司 | Automatic control device of ship |
| CN106255400A (en) * | 2016-10-21 | 2016-12-21 | 苏州江南航天机电工业有限公司 | Electromagnetic screen and distribution box |
| CN106304821A (en) * | 2016-10-21 | 2017-01-04 | 苏州江南航天机电工业有限公司 | Electromagnetic vehicle screening arrangement |
| CN107018647A (en) * | 2017-05-24 | 2017-08-04 | 合肥工业大学 | A kind of multilayer electromagnetic shielding cabinet with special teeth groove, arc-shaped slot structure |
| CN107018647B (en) * | 2017-05-24 | 2024-02-13 | 合肥工业大学 | Multilayer electromagnetic shielding cabinet body with special tooth slot and arc clamping groove structure |
| CN111525532A (en) * | 2020-04-29 | 2020-08-11 | 厦门鼎芯科技有限公司 | Three-way electromagnetic shielding control box |
| CN115426865A (en) * | 2022-08-22 | 2022-12-02 | 广州国保科技有限公司 | Mobile phone shielding cabinet |
| CN115426865B (en) * | 2022-08-22 | 2023-11-03 | 广州国保科技有限公司 | Mobile phone shielding cabinet |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20131023 |