CN201152126Y

CN201152126Y - Door electro-magnetic screen structure

Info

Publication number: CN201152126Y
Application number: CNU2007201735532U
Authority: CN
Inventors: 黄永听; 朱安东; 房非拉; 于泳; 王冰
Original assignee: ANFANG HIGH-TECH INFORMATION SECURITY TECHNOLOGY(BEIJING) Co Ltd
Current assignee: ANFANG HIGH-TECH INFORMATION SECURITY TECHNOLOGY(BEIJING) Co Ltd
Priority date: 2007-10-09
Filing date: 2007-10-09
Publication date: 2008-11-19
Anticipated expiration: 2017-10-09

Abstract

The utility model discloses a door electromagnetic shielding structure which comprises a plug-in unit (100) which is fixed on the door and a socket (200) which is fixed on a shielding body. A first shielding structure and a second shielding structure are formed by coordinating the plug-in unit with the socket. The door electromagnetic shielding structure is characterized in that a sealed space is formed between the first shielding structure and the second shielding structure; a channel and a chamber which consume electromagnetic wave energy are arranged in the sealed space. So relatively high shielding effect is gained, at the same time, the door is easy to open and close.

Description

The electromagnetic armouring structure of door

Technical field

The utility model relates to the electromagnetic armouring structure of the 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.The electromagnetic armouring structure of 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 of the electromagnetic armouring structure of opposite house 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, the electromagnetic armouring structure of door like this 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 the electromagnetic armouring structure of existing door needs to improve, and makes its structure simpler, and the switch door is laborsaving, and shield effectiveness improves.

The utility model content

The purpose of this utility model is to solve problems of the prior art, and a kind of electromagnetic armouring structure 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 armouring structure 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 the electromagnetic armouring structure of 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 armouring structure that door is provided 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 electromagnetic armouring structure of the utility model 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 electromagnetic armouring structure of the door of prior art;

Fig. 2 is that wherein door is in open mode according to the schematic diagram of the electromagnetic armouring structure of the door of the utility model one embodiment;

Fig. 3 is the partial view of electromagnetic armouring structure when closing according to door of the present utility model; And

Fig. 4 shows the schematic diagram according to the electromagnetic armouring structure of the door of another embodiment of the utility model.

The specific embodiment

Followingly embodiment according to the electromagnetic armouring structure of 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 that wherein door is in open mode according to the schematic diagram of the electromagnetic armouring structure of the door of the utility model one embodiment.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.

Socket 200 is fixed on the shield 20, it comprises interior slotting tool 210, forms the middle carriage 220 and the external support 230 of U-shaped, wherein, be provided with the beryllium copper reed of facing mutually 221,223 in middle carriage 220, the external support 230, beryllium copper reed 221,223 has the trend that is abutted together, and contacts so that be close to insert.And interior slotting tool 210 is arranged on the inboard of external support, and and the sidewall of external support between form a bypass channel 211, the rear end bending of interior slotting tool 210, and be connected to external support 230 by means of dihedral connector 260.Thereby formed the chamber 213 of square-section in the end of passage 211, though in the present embodiment, the cross sectional shape of cavity is a rectangle, yet this is the convenience in order to make just, by following description to this passage and cavity effect, will find very clearly that the shape of cavity is not limited to rectangle, can be circular, oval or other shape.The matching relationship of plug-in unit and socket is described below in conjunction with Fig. 3.

Fig. 3 shows according to the plug-in unit of the electromagnetic armouring structure of the utility model 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 the electromagnetic armouring structure of use the utility model 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 electromagnetic armouring structure of the utility model door, door cutter 110 inserts between the reed 321 and reed 323 of socket 330, thereby form sealing area 325, 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

1. the electromagnetic armouring structure of a door, comprise plug-in unit that is installed on the body and the socket that is installed on the shield, described plug-in unit and socket match and form first shielding construction and secondary shielding structure, it is characterized in that, form seal cavity between described first shielding construction and the secondary shielding structure, be provided with the passage and the chamber that consume electromagnetic wave energy in the described seal cavity.

2. the electromagnetic armouring structure of door according to claim 1, it is characterized in that, described first shielding construction, secondary shielding structure respectively by the door cutter on the plug-in unit be close to the beryllium copper reed that contacts with described door cutter and form, described beryllium copper reed is positioned on the described socket.

3. the electromagnetic armouring structure of door according to claim 1 is characterized in that, described first shielding construction is formed by the door cutter on the described plug-in unit with by the shielding gasket that described door cutter compresses respectively, and described shielding gasket is positioned on the described socket.

4. the electromagnetic armouring structure of door according to claim 1, it is characterized in that, in described first shielding construction, the secondary shielding structure one by first cutter on the described plug-in unit be close to the beryllium copper reed that contacts with described first cutter and form, another is formed by second cutter on the described plug-in unit with by the shielding gasket that described second cutter compresses, and described beryllium copper reed, shielding gasket all are positioned on the described socket.