CN201187238Y - Electromagnetic shielding door - Google Patents
Electromagnetic shielding door Download PDFInfo
- Publication number
- CN201187238Y CN201187238Y CNU2008201184271U CN200820118427U CN201187238Y CN 201187238 Y CN201187238 Y CN 201187238Y CN U2008201184271 U CNU2008201184271 U CN U2008201184271U CN 200820118427 U CN200820118427 U CN 200820118427U CN 201187238 Y CN201187238 Y CN 201187238Y
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- CN
- China
- Prior art keywords
- door
- bracket
- carriage
- external support
- shield
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- Expired - Lifetime
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Abstract
The utility model discloses an electromagnetic shielding door, which comprises a plug-in piece (100) fixed on a door body, and a socket (2) fixed on a shielding body. The plug-in piece comprise a door vane (110), a door bracket (120), a metal leaf spring (130) arranged on the door bracket; the socket comprises an inner slotting tool (210), an intermediate bracket (220) and an outer bracket (230); the intermediate bracket and the outer bracket are provided with metal leaf springs (221, 223) which are butted against each other oppositely; a bypass passage (211) is formed between the intermediate bracket and the inner bracket; a cavity (213) is arranged on the end part of the passage; the door vane (110) is inserted in the metal leaf springs (221, 223) which are positioned between the intermediate bracket and the outer bracket and butted against each other oppositely; the inner side of the inner slotting tool (210) is tightly contacted with the metal leaf spring (130) of the door bracket. The electromagnetic shielding door can be easily opened and closed when higher shielding efficiency is obtained.
Description
Technical field
The utility model relates to the electromagnetic shield door on a kind of electromagnetic screen.
Background technology
Electromagnetic shield door is used on the shields such as electromagnetic shielding box, shielding cabinet, is used for the opening on the closed shield body, prevents that electromagnetic-wave leakage from going out.Electromagnetic shield door roughly is divided into three types at present, first kind is to be close to contacting structure between a cutter and the beryllium copper reed, second kind of structure that to be a cutter, carriage or similar item compress mutually with shielding gasket, also having a kind of is the combination of having used aforementioned two kinds of structures, for example notification number CN2549145 disclosed " safeguard crack between a door and its frame electricity hermetically-sealed construction " is exactly this type.In this composite type, electromagnetic wave has passed through the sealing of multiple shielding construction, thereby the electromagnetic wave that leaks out from shield seldom.Yet, no matter be any type, between each member of shielding construction (for example, between door cutter and the beryllium copper reed, between door cutter and the shielding gasket) fit clearance exist all the time, and the complexity to electromagnetic shield door also has requirement, thereby be difficult to the shield effectiveness that reaches high by limited textural association, can only reach the B level requirement among the national secret standard GGBB1-1999 usually.
In addition, compress mutually by making between the shield member in addition, and then cause fit clearance to reduce to reach the purpose that reduces electromagnetic leakage, as shown in Figure 1, such electromagnetic shield door comprises carriage 20 and door cutter 10, be installed in the beryllium copper reed 21 of the door cutter 10 insertion carriages 20 (being installed on the shield) on the (not shown), between 23, and beryllium copper reed 21,23 have been inserted bar-shaped shielding gasket 22 in advance respectively, 24, because shielding gasket 22,24 have elasticity, thereby when the door cutter inserts the beryllium copper reed, to beryllium copper reed bias voltage, make the beryllium copper reed be close to a cutter more, fit clearance between them has reduced greatly like this, thereby effectively stoped electromagnetic leakage, improved shield effectiveness, yet, the problem that resistance increases of inserting also brought, this can make that shield door is difficult to close and open, and brings very big inconvenience to the operator.
Thereby existing electromagnetic shield door needs to improve, and makes its structure simpler, and the switch door is laborsaving, and shield effectiveness improves.
Summary of the invention
The purpose of this utility model is to solve problems of the prior art, and a kind of electromagnetic shield door is provided, and it is easy to open and close when obtaining higher shield effectiveness.
For reaching this purpose, according to one side of the present utility model, a kind of electromagnetic shield door is provided, comprise plug-in unit that is installed on the body and the socket that is installed on the shield, plug-in unit and socket match and form first shielding construction (or being called the shielding interlayer) and secondary shielding structure, form seal cavity between first shielding construction and the secondary shielding structure, in the seal cavity passage and chamber can be set.Electromagnetic wave in the shield is by each road shielding interlayer admission passage and chamber, thereby electromagnetic energy is partially consumed in this process, and electromagnetic shield door promptly of the present utility model suppresses electromagnetic emission by multiple tracks interlayer and chamber are set.
Preferably, by the door cutter and be close to the beryllium copper reed that touches that connects with the door cutter and form on the plug-in unit, the beryllium copper reed is positioned on the socket respectively for above-mentioned first shielding construction, secondary shielding structure.
Preferably, above-mentioned first shielding construction is formed by the door cutter on the plug-in unit with by the shielding gasket that the door cutter compresses respectively, and shielding gasket is positioned on the socket.
Preferably, in above-mentioned first shielding construction, the secondary shielding structure one is contacted the beryllium copper reed and forms with being close to first cutter by first cutter on the plug-in unit, another is formed by second cutter on the plug-in unit with by the shielding gasket that second cutter compresses, and beryllium copper reed, shielding gasket all are positioned on the socket.
The electromagnetic shield door that provides on the other hand of the present utility model comprises the plug-in unit that is fixed on the body and is fixed on socket on the shield, and wherein, plug-in unit comprises a cutter, door bracket and is arranged on metal spring leaf on the door bracket; Socket comprises interior slotting tool, middle carriage and external support, middle carriage and external support be provided with relative against metal spring leaf, form bypass channel between middle carriage and the interior carriage, the end of passage is provided with chamber; Wherein, during the door cutter inserts when door is closed, between the external support relative against metal spring leaf in, the inboard of interior slotting tool is close to the metal spring leaf of door bracket and is contacted.
Preferably, be provided with insulating pad in the above-mentioned bypass channel.
Preferably, be provided with shielding gasket between the carriage, external support in above-mentioned, the door cutter insert relatively against metal spring leaf in compress shielding gasket.
Preferably, above-mentioned door body comprises door-plate, inner door scaleboard and the support between door-plate and inner door scaleboard, and inner door scaleboard has the edge part of bending, and door bracket is fixed on the edge part of bending.
Preferably, above-mentioned interior carriage has the end of bending, and the end of bending is connected to external support by connector and constitutes chamber, and shield has the edge part that bends inwards, and socket is fixed in the edge part of shield by angle-shaped piece and external support.
Preferably, above-mentioned external support and plug-in unit all are the U-shaped structure.
According to the utility model electromagnetic shield door, be provided with first shielding construction, promptly reed forms first electromagnetic sealing with interior carriage by being close to contact; The secondary shielding structure, promptly reed forms second electromagnetic sealing with the door cutter by being close to contact; And be provided with in the seal cavity between first shielding construction and secondary shielding structure and consume electromagnetic passage and chamber, make the electromagnetic wave that arrives in the seal cavity be easy to admission passage and arrive chamber, and in this communication process, be consumed, and then the electromagnetic wave energy that leaks out from the secondary shielding structure is very weak, thereby reaches higher shield effectiveness.Compared with prior art, owing to need in the beryllium copper reed, not insert shielding gasket, thereby it is less to insert resistance, the door body is easy to open and close.
Be noted that the description and the following detailed description all are exemplary, being intended to provides further instruction to desired the utility model.
Except purpose described above, feature and advantage, the utility model also has other purpose, feature and advantage, below with reference to accompanying drawings, other purpose, feature and effect of the present utility model is described in further detail.
Description of drawings
Constitute this manual a part, be used for further understanding accompanying drawing of the present utility model and show preferred embodiment and be used for illustrating principle of the present utility model with explanation.In the accompanying drawing:
Fig. 1 is the schematic diagram of the electromagnetic shield door of prior art;
Fig. 2 is the schematic diagram according to the electromagnetic shield door of the utility model one embodiment, and wherein door is in open mode;
Fig. 3 is according to the partial view of electromagnetic shield door of the present utility model when closing; And
Fig. 4 shows the schematic diagram according to the electromagnetic shield door of another embodiment of the utility model.
The specific embodiment
Followingly embodiment according to electromagnetic shield door of the present utility model is done detailed explanation with reference to accompanying drawing.Hereinafter, " outward " and " interior " approaches the interior part of shield and is called " interior ", otherwise be called " outward " for shield.
Fig. 2 is the schematic diagram according to the electromagnetic shield door of the utility model one embodiment, and wherein door is in open mode.In order to prevent that the electromagnetic wave in the shield from leaking from crack between a door and its frame, is provided with plug-in unit 100 around the edge of door body 10, correspondingly, the edge of shield 20 is provided with socket 200, and when door was closed, plug-in unit 100 inserted in the socket 200, thereby the sealing crack between a door and its frame reaches electromagnet shield effect.Introducing the structure of plug-in unit 100 and socket 200 below in detail, is symmetrical owing to be distributed in plug-in unit, the socket of a body 10 relative both sides of the edge, thereby the Reference numeral of being shown on a side is applicable to corresponding part or part on the opposite side.
Plug-in unit 100 is a U-shaped, forms door cutter 110 and carriage 120, and beryllium copper reed 130 is housed on the carriage 120.Beryllium copper reed 130 is positioned at the U-shaped inboard.Plug-in unit 100 is fixed on the body by carriage 120, the door body comprise door-plate 145, be located at the inner door scaleboard 143 of door-plate 145 inboards and be arranged on door-plate 145 and inner door scaleboard 143 between support 141.Inner door scaleboard has the edge part of bending, and is fixing for carriage 120.
Fig. 3 shows according to the plug-in unit of the utility model electromagnetic shield door and the matching relationship of socket.When door was closed, door cutter 110 inserted between reeds 221 and the reed 223, and meanwhile, interior slotting tool 210 and middle carriage 220 also are arranged in U-shaped plug-in unit 100, and reed 130 is close to the wall of interior slotting tool 210 and is contacted.The inlet of passage 211 then is arranged in the seal cavity 150 that first shielding construction (being formed with slotting tool 210 by the reed 130 of being close to contact) and secondary shielding structure (forming by being close to the reed 221 and the door cutter 110 that contact) form like this.Also be provided with cross-over block 215 in passage 211, one of effect of cross-over block 215 is the distortion of carriage when plug in can resisting.Understand easily, the setting of cross-over block is optionally, rather than necessary.
Test (with reference to national secret standard BMB19-2006 test by shielded box door with this shielding construction, test frequency 10GHz, testing equipment is SEPG-2B type point power signal source and an Aglient Technologies 8563EC spectrum analyzer frequently), find that shield effectiveness reaches more than the 100dB, and prior art pass through in the beryllium copper reed, fill in the means that shielding gasket improves shield effectiveness and can only reach 80-100dB usually, and switch door effort, be awkward.
The utility model people is by thinking, the key that the shield effectiveness of the shielded box of use the utility model electromagnetic shield door improves is: be provided with first shielding construction, promptly formed by being close to contact with interior slotting tool 230 by reed 130; The secondary shielding structure is promptly formed by being close to contact with door cutter 110 by reed 211; And in the seal cavity 150 that between first shielding construction and secondary shielding structure, forms, be provided with passage 211 and chamber 213, electromagnetic wave in the feasible arrival seal cavity 150 is (by the shielding of first shielding construction, the electromagnetic wave that arrives seal cavity is its sub-fraction compared with in shielded box) be easy to admission passage 211 and arrive chamber 213, and then the part energy that is positioned at seal cavity 150 consumed by passage and chamber, and the electromagnetic wave that leaks out from the secondary shielding structure weakens like this.
In addition, in the above-described embodiments, can also in the U-shaped structure of middle carriage 220 and interior carriage 230 compositions, put into shielding gasket 240, like this, when door cutter 110 inserted between the reed 221,223, the end of door cutter 110 just in time compressed shielding gasket 240, and increases another shielding construction.
Fig. 4 shows another embodiment according to the utility model electromagnetic shield door, and door cutter 110 inserts between the reed 321 and reed 323 of socket 330, thereby forms sealing area 325, and passage 331 and sealing area 333 communicate, and the end of passage is a chamber 325.Like this, reed 323 and door cutter 110 formation first shielding construction, reed 321 and door cutter 110 constitute the secondary shielding structure, and the electromagnetic wave in sealing area 325 arrives chamber generation resonance by passage and consumes part energy.
Obviously.First shielding construction, secondary shielding structure are not limited to the type that contacts of being close to that a cutter and reed are close to the type, door cutter and the shielding gasket that contact, and perhaps their combination can also be other type, as long as they can form sealing area.Be positioned at the passage, chamber of sealing area owing to can consume electromagnetic portion of energy, thereby reach the purpose of this utility model.In addition, the quantity of the passage-chamber that communicates with sealing area is not limited to one group, for example, and in socket shown in Figure 4, the opposite side relative with passage-chamber be provided with one group, so that obtain further effect.
It below only is preferred embodiment of the present utility model; be not limited to the utility model; to those skilled in the art; the utility model can have various modifications and variations; all within spirit of the present utility model and principle scope; any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (6)
1. electromagnetic shield door comprises the plug-in unit (100) that is fixed on the body and is fixed on socket (200) on the shield, it is characterized in that,
Described plug-in unit comprises a cutter (110), door bracket (120) and is arranged on metal spring leaf (130) on the door bracket;
Described socket comprises interior slotting tool (210), middle carriage (220) and external support (230), in described carriage and external support be provided with relative against metal spring leaf (221,223), form bypass channel (211) between carriage and the interior carriage in described, the end of described passage is provided with chamber (213);
Wherein, described door cutter (110) when door is closed, inserts described in, between the external support relatively against metal spring leaf (221,223) in, the inboard of described interior slotting tool (210) is close to the metal spring leaf (130) of described door bracket and is contacted.
2. electromagnetic shield door according to claim 1 is characterized in that, is provided with insulating pad (215) in the described bypass channel.
3. electromagnetic shield door according to claim 1 is characterized in that, is provided with shielding gasket between the carriage, external support in described, described door cutter insert relatively against metal spring leaf in compress described shielding gasket (240).
4. electromagnetic shield door according to claim 3, it is characterized in that, described door body comprises door-plate, inner door scaleboard and the support between described door-plate and inner door scaleboard, and described inner door scaleboard has the edge part of bending, and described door bracket is fixed on the edge part of described bending.
5. electromagnetic shield door according to claim 4, it is characterized in that, carriage has the end of bending in described, the end of described bending is connected to described external support by connector and constitutes chamber, described shield has the edge part that bends inwards, and described socket is fixed in the edge part of described shield by angle-shaped piece and external support.
6. electromagnetic shield door according to claim 5 is characterized in that, described external support and described plug-in unit all are the U-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201184271U CN201187238Y (en) | 2007-10-09 | 2007-10-09 | Electromagnetic shielding door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201184271U CN201187238Y (en) | 2007-10-09 | 2007-10-09 | Electromagnetic shielding door |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201735532U Division CN201152126Y (en) | 2007-10-09 | 2007-10-09 | Door electro-magnetic screen structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201187238Y true CN201187238Y (en) | 2009-01-28 |
Family
ID=40310257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201184271U Expired - Lifetime CN201187238Y (en) | 2007-10-09 | 2007-10-09 | Electromagnetic shielding door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201187238Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738645A (en) * | 2012-06-28 | 2012-10-17 | 安方高科电磁安全技术(北京)有限公司 | Guide rail type USB (universal serial bus) interface component of integrated machine with resistance against electromagnetic leakage |
| TWI644010B (en) * | 2016-03-18 | 2018-12-11 | 十大科技股份有限公司 | Electromagnetic wave isolation door |
-
2007
- 2007-10-09 CN CNU2008201184271U patent/CN201187238Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738645A (en) * | 2012-06-28 | 2012-10-17 | 安方高科电磁安全技术(北京)有限公司 | Guide rail type USB (universal serial bus) interface component of integrated machine with resistance against electromagnetic leakage |
| CN102738645B (en) * | 2012-06-28 | 2015-04-15 | 安方高科电磁安全技术(北京)有限公司 | Guide rail type USB (universal serial bus) interface component of integrated machine with resistance against electromagnetic leakage |
| TWI644010B (en) * | 2016-03-18 | 2018-12-11 | 十大科技股份有限公司 | Electromagnetic wave isolation door |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090128 |
|
| CX01 | Expiry of patent term |