CN1564265A - Multi-stage shielding gate - Google Patents
Multi-stage shielding gate Download PDFInfo
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- CN1564265A CN1564265A CN 200410029844 CN200410029844A CN1564265A CN 1564265 A CN1564265 A CN 1564265A CN 200410029844 CN200410029844 CN 200410029844 CN 200410029844 A CN200410029844 A CN 200410029844A CN 1564265 A CN1564265 A CN 1564265A
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- shield door
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- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims 1
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- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Special Wing (AREA)
Abstract
The invention includes door body, doorframe, and shield assembly between door body and doorframe. The shield assembly includes one or more shield units. Using ant combination of each shield unit realizes relevant different shield efficiency. Multistage shields are adopted in the invention. Based on various degrees of compaction fitting between door body and doorframe, first stage shield, attenuation and dual shield etc can be realized. Shield stages can be adjusted based on need. Features are: simple structure, easy of use.
Description
Technical field
How the shield technology that present invention relates in general to build realizes shielding by shield door more specifically to the building entrance that shielding is had requirement, promptly can realize the technology of multistage shielding according to the shielding grade of building.
Background technology
Shield door is the important component part of shielding building, is the difficult point that realizes the building integral shielding, and the shielding grade of shield door will be complementary with the building body shielding.One of key of resolving the shielding architectural shielding is exactly the shielding of handling shield door well.
In the shield door of the realization shielding of building that usually adopts in the prior art, domestic shield door generally is that single-stage compresses, and such shield door shielding properties is poor, is difficult to the shielding requirements that reaches desirable, generally only reaches the shield effectiveness of 30-40dB.Reach higher shield effectiveness if desired, the cost of then making shield door improves greatly.For example, the shield effectiveness of a kind of plug formula shield door in the foreign technology can reach 60dB.But this shield door shielding properties is single, price comparison is high, be difficult for promoting the use of.And, shield because thereby this plug formula shield door is connected realization by the plug cooperation with doorframe, so combining between shield door body and the doorframe is tight especially, so that the strength that need cost a lot of money when opening the door, opening ways is extremely inconvenient, and this has also reduced its practicality.In a word, the deficiency of the maximum of shield door is in the prior art, they all have self fixing shield ranges, can't adjust according to actual needs to adapt to different shielding requirements, therefore when reply has the environment of various shielding requirements, may there be shielding problem not enough or that excessively shield, and then causes the wasting of resources.
Summary of the invention
In order to solve the above-mentioned defective that exists in the prior art, the invention provides a kind of multistage shield door that is used for realizing as requested the multistage shielding of buildings, this multistage shield door comprises: door body, doorframe, be arranged on the shield assembly between a body and the doorframe, this shield assembly is used to make described door body and doorframe to combine closely to realize corresponding shield effectiveness, wherein, described shield assembly comprises one or more screen unit, and the combination in any by described each screen unit realizes shield effectiveness in various degree.
In the preferred embodiment of multistage shield door of the present invention, described shield assembly comprises three screen units.First screen unit is arranged on the one-level of described doorframe surrounding and presses the elastic claw bar, one side this one-level is pressed being fixedly mounted on the described doorframe of elastic claw bar, another presses the bullet limit to exceed doorframe and the inboard contacted inside edge of door body one first predetermined altitude.Described secondary shielding unit is arranged in the lid flanging frame trough rim of a body surrounding and is higher than the secondary pressure elastic claw bar of this lid flanging frame trough rim one second predetermined altitude.Described the 3rd screen unit is that spring is pressed in the shielding peripheral and position that the door body fits around being fixedly installed on doorframe.
Above-mentioned multistage shield door according to the present invention has adopted multistage shielding principle, realize a cascade screen, decay, shielding more in various degree according to Men Tiyu doorframe compression fit, thereby can be according to actual needs, adjust needed shielding grade neatly by the various combination of each screen unit, so that realize different shield effectivenesss, and it is simple in structure, easy to use, with low cost.
Description of drawings
In conjunction with following detailed description to accompanying drawing, it is more obvious that purpose of the present invention, characteristics and beneficial effect thereof will become.In the drawings:
Figure 1A is the assembly structure figure of multistage shield door of the present invention.
Figure 1B is the cross-sectional view of the wiring layout of Figure 1A along door body in the sectional view of I-I line intercepting.
Fig. 1 C is the cross-sectional view that the wiring layout of Figure 1A matches along Men Tiyu doorframe in the sectional view of I-I line intercepting.
Fig. 2 is the zoomed-in view of the hinge shown in Figure 1A.
Fig. 3 is the amplification cross-sectional view of assembly structure of doorframe and door body in the of the present invention multistage shield door shown in Fig. 1 C.
Fig. 4 is the configuration that the present invention's multistage shield door is as shown in Figure 1 tested.
Fig. 5 is the test figure of testing shown in Fig. 4.
Embodiment
An embodiment to multistage shield door of the present invention is elaborated below in conjunction with each accompanying drawing.
Figure 1A-1C shows the wiring layout of the multistage shield door 20 of present embodiment of the present invention.Wherein, Figure 1A is the assembling outside drawing of multistage shield door.Shown in Figure 1A, the multistage shield door 20 of present embodiment comprises a body 1, doorframe 2, and door lock 3 connects hinge 4 and shield assembly (not shown) etc.Figure 1B is the cross-sectional view of the wiring layout of Figure 1A along door body in the sectional view of I-I intercepting, and Fig. 1 C is the further detailed diagrammatic sketch of Figure 1B.Shown in Figure 1B-1C, door body 1 thickness is H (H=55mm in the present embodiment); Door body 1 is made up of structural framework 7, wire drawing stainless steel surface layer 9, insulation filler 6, shield assembly 5, ruggedized construction 8 (for example reinforcing keel) etc.According to size and its intensity that will reach of door body, can select for use different steel to do structural framework 7, in the both sides of structural framework 7 wire drawing stainless steel surface layers 9, the thickness of every layer of steel plate for example can be 1.2mm.Be insulation filler 6 between the two-layer corrosion resistant plate,, can select different insulation materials for use according to different fire prevention and insulation requirement.Between door body 1 and doorframe 2, connect cooperation and realize corresponding shield effectiveness by shield assembly 5.To introduce the concrete structure of this shield assembly 5 in detail below.
Referring to Fig. 1 C and Fig. 3, the concrete assembly structure of multistage shield door 20 of the present invention is described.As shown in the figure, for improving shield effectiveness, around door body 1 outside 1-2, all stretch out L1 (L1=32mm in the present embodiment) length, and towards the direction of doorframe 2 bending 90 degree, curved again L2 (L2=15mm in the present embodiment) length is covered flanging frame trough rim 11 so that form, this lid flanging frame trough rim 11 is that the steel plate butt welding of d (d=1.2mm in the present embodiment) is made by two layers of thickness, to guarantee that covering flanging frame trough rim 11 can have enough lid pressure degree.That is, with respect to the pressure bullet effect between the outer edge 2-2 of doorframe 2 body 1 and doorframe 2 are closely cooperated effectively by being arranged on the copper tooth bar 12 (below will describe) that covers in the flanging frame trough rim 11.Clearly, owing to adopted above-mentioned press-button structure door, thus the slit of having avoided shield door common in the prior art to exist in door body and doorframe junction, and signal to be shielded is often from this slit " leakage ".So press-button structure shield door of the present invention compared with prior art can improve shield effectiveness.In addition, lid flanging frame trough rim 11 makes a body 1 and doorframe 2 have certain space when closely cooperating herein towards the length L 2 of doorframe 2 bendings, and the signal process is attenuated during this space, thereby further improves shield effectiveness.
Because this shield door 20 of the present invention is the press-button structure door, connect the folding of using in the general door of hinge 4 replacements so adopt.Fig. 2 illustrates the structural drawing of this connection hinge 4.It is different with the folding of general door that this connects hinge 4, is special stainless steel hinge arrangement, comprises web joint 4-1 and hinge 4-2.Connect hinge 4 and be fixed on structural framework 7 surfaces of shield door, and make shield door 20 that the situation Xiamen energy freely openable that cover flanging frame trough rim 11 arranged by the hinge 4-2 that is fixed on the doorframe 2 by web joint 4-1.In the present embodiment, connect hinge 4 and adopt the thick corrosion resistant plate of 4-6mm so that its can with the steel construction coupling of door body 1 and doorframe 2, and reach the sufficient intensity of switch door body 1.Nature, as long as can achieve the above object, the material of this connection hinge 4 and thickness all can change.
The structure of the doorframe 2 of shield door 20 of the present invention is described below in conjunction with Fig. 1 C and Fig. 3.Doorframe 2 is all used corrosion resistant plate compression moulding, and for example can adopt thickness in this embodiment is the thick steel plate of 2mm.Doorframe 2 is fixed on the steel construction C shaped steel, and it is the lap of splice of L4 (L4=120mm in the present embodiment) that doorframe 2 interior collar extensions and body of wall 10 surface color steel plates have length.Collar extension at doorframe will wrap door pocket, and can suppress with lap width is the stainless steel door pocket of L3.In the present embodiment, for example L3 is identical with L4, that is, and and L3=L4=120mm.Its assemble sequence is that stainless steel door pocket steel plate is pressed body of wall 10 surperficial colored steels, the stainless steel limit of colored steel pressure doorframe 2.Purpose is to guarantee that there are enough shield effectivenesss the doorframe 2 and the coupling part of construction wall 10.In addition, in order to reduce the adverse effect that door lock 3 perforates bring, can in the hole of door lock 3, put twice 40 purpose copper mesh, to prevent door lock position leakage field.
Introduce the shield assembly 5 of shield door 20 of the present invention below in conjunction with Fig. 3.As shown in the figure, two copper tooth bar shell fragments of present embodiment compress shield assembly 5 and comprise three screen units, that is: the one-level copper is suppressed tooth bar 13, and the secondary copper is suppressed tooth bar 12, and corner protector shielding copper is pressed bullet shielding strip 14.Wherein, the one-level copper is suppressed tooth bar 13 and is installed in doorframe 2 peripheries, it is fixed on the doorframe 2 with stainless steel square tube 16 on one side, the one-level copper suppress tooth bar 13 another press to play limit and be higher than for example 2mm-3mm of doorframe 2 and an inside edge 2-1 that body 1 inboard 1-1 matches, when shield door 20 is closed, the connection hinge 4 of this shield door 20 can not influence this one-level copper and suppress pressure bullet between tooth bar 13 and the doorframe 2, a body 1 and this one-level copper are suppressed to form effectively pressure bullet between the tooth bar 13, door body 1 and one-level copper are suppressed tooth bar 13 and are reached effective combination, make thus between a body 1 and the doorframe 2 and realize combining closely, thereby play the effect of a cascade screen.The secondary copper is suppressed tooth bar 12 and is installed in the shield door 20 lid flanging frame trough rim 11 all around, and this secondary copper is suppressed tooth bar 12 and is higher than for example 2mm-5mm of shield door 20 lid flanging frame trough rim 11 all around.As mentioned above, when shield door 20 was closed, the outer edge 2-2 that makes secondary coppers in the lid flanging frame trough rim 11 of this shield door 20 suppress tooth bar 12 and doorframe 2 can effectively compress, and was closed tight, realize combining closely thereby make between a body 1 and the doorframe 2, realize two cascade screens.For satisfying different architectural shielding requirements, improve the shield effectiveness of multistage shield door 20, make it shielding action be arranged to high frequency, can also be around doorframe 2 position that fits of periphery and door body 1 fixedly corner protector shielding copper press bullet shielding strip 14, thereby realize multistage shielding.Its shield effectiveness can improve 10dB, promptly reaches 60dB (back data by experiment describes in detail).
Multistage shield door of the present invention has adopted multistage shielding principle, promptly according to door body 1 and doorframe 2 compression fit realize a cascade screen, decay, shielding more in various degree, thereby can adjust needed shielding grade neatly according to actual needs.Still describe in conjunction with the foregoing description.First screen unit, promptly the one-level copper is suppressed tooth bar 13, utilizes the effective pressure bullet between copper sheet and the doorframe 2, and intermediate frequency and low frequency (transmission frequency is in the 30kHz-10Mhz scope) are played effective shielding action; Next is the secondary shielding unit, and promptly the secondary copper is suppressed tooth bar 12, to the low frequency of decaying through first screen unit 13, the effect that intermediate frequency has secondary shield.And, as mentioned above, covering flanging frame trough rim 11 owing to exist, this secondary shielding unit is also treated shielded signal and is had attenuation, and this can improve shield effectiveness.Like this, the comparable one-level shield effectiveness of two cascade screens improves about 10dB.In addition, can also fix the 3rd screen unit around doorframe 2, i.e. corner protector shielding copper is pressed and is played shielding strip 14, thereby makes the shield effectiveness of this multistage shield door 20 reach the shield effectiveness of foreign technology plug formula shield door.
The present inventor tests above-mentioned multistage shield door 20.Fig. 4 shows the shield door test configurations.As shown in the figure, this experiment is provided with four representative check point 1-4 around multistage shield door 20, and be provided with first screen unit 13 and secondary shielding unit 12 at a 1-3 place, and consider that main equipment passes in and out by shield door, so locate only to be provided with secondary shielding unit 12 in 4 in student portion.Detect the shield effectiveness (dB) at each point place then.Fig. 5 shows experimental result data.Concrete condition is as described below.
Test detects foundation: GB/T12190-90 " shielding of high-performance screened room is measured ".
Main checkout equipment: SMY02 type signal generator, MS2601B/K type spectrum analyzer and all kinds of emission, receiving antenna.
Process of the test: in shield door 20 required distances, do shield effectiveness and detect.In this test is to carry out in certain scientific research structure high-power electric and electronic detects, and transmitting range signal and received signal distance all are apart from shield door 20 about 0.5 meter.In the test frequency scope that shield door 20 requires, the detection signal of emission different frequency section, transmission frequency is carried out shield effectiveness then and is detected between 30kHz-10Mhz in this test.
Shielding result: (especially can find out) as can be seen from the experimental data of 700-800kHZ frequency range from the test figure of Fig. 5, shield effectiveness is between 30dB-40dB when adopting the one-level copper to suppress tooth bar 13, shield effectiveness can reach between the 40dB-50dB when adopting the secondary copper to suppress tooth bar 12 again, and (point 4) also can reach 40-45dB when the secondary copper only being set suppressing tooth bar 12.As seen, even a screen unit only is set, for example point 4 places in this experiment also can reach the basic shielding requirements of general experiment, and the situation shield effectiveness that has a screen unit and have two screen units differs about 10dB.Press bullet shielding strip 14 if the 3rd screen unit corner protector shielding copper is set on this basis again, will make shield effectiveness reach about 60dB (concrete experimental data slightly), this conclusion also can obtain from above-mentioned experimental data in reasoning.In addition, compare with single-stage shield door in the prior art, multistage shield door of the present invention can be realized various rudimentary and senior shield effectiveness by the various combination of each screen unit.
By top analysis as can be seen, though be the explanation of carrying out in conjunction with multistage shield door 20 in the foregoing description with shield assembly 5 that three screen units form.But, adopt any one or two the shield assembly that combination constituted 5 in these three screen units can reach purpose of the present invention equally.For example, can only adopt three screen units, that is: suppress tooth bar 13 by the one-level copper, the secondary copper is suppressed tooth bar 12, and corner protector shielding copper presses any one that play in the shielding strip 14 to constitute shield assembly 5.As above-mentioned,, therefore can satisfy the requirement of corresponding shielding rank owing to anyly can realize closely cooperating between a body 1 and the doorframe 2 in these three screen units.When understanding easily when forming screen unit 5 by any two in three screen units, this shielding construction can be realized decaying step by step, the effect of secondary shield, and its shield effectiveness is better.If use all three screen units simultaneously, then can reach the shield effectiveness of prior art mid-to high-end product (for example external plug formula shield door), high frequency is realized effectively shielding.In fact, requirement to shield effectiveness in different occasions and environment is different, be appreciated that, adopting the shield door with high-grade function of shielding under the situation of the more low-level shield effectiveness of needs obviously is the wasting of resources, otherwise, under the situation of the shield effectiveness that needs higher level, adopt the shield door of inferior grade function of shielding then will cause shielding not enough.And the major defect of shield door of the prior art just is and can't adjusts flexibly in light of the circumstances to satisfy the requirement of different shield effectivenesss.And this multistage shield door of the present invention has solved this problem just, and the various combination of each component units by shield assembly is realized different shielding ranks, and simple in structure, easy for installation, cheap.In addition, understand easily, more screen unit also may be set to realize more kinds of other shielding requirements of level.But the multistage shield door of the above embodiment of the present invention has been enough to finish in the prior art the most requirements to shield effectiveness.
Need to prove, though, when each building block of explanation the foregoing description, adopted concrete size and material in order to describe for simplicity.But, it will be appreciated by those skilled in the art that these concrete selections do not constitute the restriction to technical solution of the present invention.For example, in the shield door 20 of the foregoing description, door body 1 surface and doorframe 2 surfacings adopt stainless steel, its objective is that corrosion resistant plate thickness is 1.2mm in order to improve the shield effectiveness of door.But, also can adopt the material of high conductivity such as copper coin, aluminium sheet, steel plate, its purpose all is to make a body that good shield effectiveness be arranged self.Thickness requirement to respective plates also can be adjusted according to actual needs.In the above-described embodiments, three screen units forming shield assembly 5, that is: the one-level copper is suppressed tooth bar 13, and the secondary copper is suppressed tooth bar 12, and corner protector shielding copper presses bullet shielding strip 14 to adopt tin-phosphor bronzes to make, but, according to the calling hierarchy of different shield doors, can use the copper strips compression moulding of different model, for example C5191, C5210 etc., its copper sheet characteristics have high resiliency, suppress even, good, the difficult deformation of resilience, the characteristics that anti-fatigue performance is good, corrosion resistivity is good, contact is good.This has guaranteed between door body 1 and the doorframe 2 good closely cooperating arranged, and is beneficial to realize required shield effectiveness.Be appreciated that other materials that satisfy above-mentioned requirements can certainly be used for making each screen unit.Being used for fixing the one-level copper suppresses the stainless steel square tube 16 employing stainless steel square tubes of tooth bar 13 or adopts the copper square tube.Certainly, also can use other one-level copper can be suppressed tooth bar 13 and be fixed on securing member on the doorframe 2.The range of size of shield door 20 is generally: width is between the 600-1800mm, highly between 1800-2700mm.This depends primarily on concrete installation environment.
Though specifically described a specific embodiment above according to shield door of the present invention,, the present invention is not limited to above-mentioned each ins and outs, and for example various concrete fitted positions and material are selected.Those skilled in the art are to be understood that, each the concrete assembly that constitutes shield door of the present invention can be selected different sizes and manufactured materials according to actual conditions, realizes corresponding shielding requirements as long as each assembly satisfies the matching relationship of the invention described above shield door and is applicable to.In a word, protection scope of the present invention is only limited by appended claims.
Claims (13)
1, a kind of multistage shield door (20), comprise: door body (1), doorframe (2), be arranged on the shield assembly (5) between a body (1) and the doorframe (2), this shield assembly (5) is used to make described door body (1) and doorframe (2) to combine closely to realize corresponding shield effectiveness, it is characterized in that:
Described shield assembly (5) comprises one or more screen unit, and the combination in any by described each screen unit realizes shield effectiveness in various degree.
2, multistage shield door as claimed in claim 1 is characterized in that:
Described shield assembly (5) comprises three screen units, wherein,
The one-level that described first screen unit (13) is arranged between described door body (1) and the described doorframe (2) is pressed the elastic claw bar, this one-level presses elastic claw bar to be configured to when described shield door (20) when closing, make a body (1) by this one-level pressure elastic claw bar (13) the realization of pressure bullet and doorframe (2) between combine closely;
The secondary that described secondary shielding unit (12) is arranged between described door body (1) and the described doorframe (2) is pressed the elastic claw bar, this secondary presses elastic claw bar to be configured to when described shield door (20) when closing, make a body (1) by this secondary pressure elastic claw bar (12) the realization of pressure bullet and doorframe (2) between combine closely;
Spring (14) is pressed in the shielding that described the 3rd screen unit (24) is arranged between described door body (1) and the described doorframe (2), this shielding presses spring (14) to be configured to when shield door (20) when closing, door body (1) by this shielding pressure spring (14) the realization of pressure bullet and doorframe (2) between combine closely;
Wherein, described three screen units are arranged on the diverse location place between a body and the doorframe.
3, multistage shield door as claimed in claim 2 is characterized in that:
Described one-level presses elastic claw bar (13) to be arranged on described doorframe (2) surrounding, this one-level presses one side of elastic claw bar (13) to be fixedly mounted on the described doorframe (2), and another presses the bullet limit to exceed doorframe (2) and inboard (1-1) the contacted inside edge (2-1) of door body (1) one first predetermined altitude.
4, multistage shield door as claimed in claim 3 is characterized in that:
What be used for described one-level is pressed that elastic claw bar (13) is fixed on described doorframe (2) surrounding is stainless steel square tube (16) or copper square tube, and described first predetermined altitude is 2-3mm.
5, multistage shield door as claimed in claim 2 is characterized in that:
Described secondary is pressed elastic claw bar (12) to be arranged in the lid flanging frame trough rim (11) of a body (1) surrounding and is higher than this lid flanging frame trough rim (11) one second predetermined altitudes, when closing, this secondary presses the elastic claw bar (12) and the outer edge (2-2) of doorframe (2) effectively to compress with convenient shield door (20).
6, multistage shield door as claimed in claim 5 is characterized in that:
Described lid flanging frame trough rim (11) forms in such a way: around door body (1) outside (1-2), all stretch out first length L 1, and then towards doorframe (2) bending 90 degree, and then curved second length L 2.
7, multistage shield door as claimed in claim 6 is characterized in that:
Described lid flanging frame trough rim (11) is that the steel plate butt welding of 1.2mm is made by two layers of thickness, and described first length L 1 is 32mm, and described second length L 2 is 15mm, and described second predetermined altitude is 2-5mm.
8, multistage shield door as claimed in claim 2 is characterized in that:
Described shielding presses spring (14) to be fixedly installed on doorframe (2) periphery and a position that body (1) fits all around.
9, as each described multistage shield door among the claim 1-8, it is characterized in that:
The combination in any of described first, second and the 3rd screen unit is a kind of in following:
Any one combination in first, second and the 3rd screen unit;
Any two combination in first, second and the 3rd screen unit;
All first, second and the 3rd screen unit in combination.
10, as any one described multistage shield door among the claim 1-9, it is characterized in that:
Described doorframe (2) is all used the thick corrosion resistant plate compression moulding of 2mm, this doorframe (2) is fixed on the steel construction C shaped steel, doorframe (2) embeds body of wall (10), and has the color steel sheet overlap that length is L4 between the interior collar extension of doorframe (2) and body of wall (10) surface, the collar extension compacting and the lap of splice at door are the stainless steel door pocket of L3, it is that stainless steel door pocket steel plate is pressed the surperficial colored steel of body of wall (10), the stainless steel limit of the interior collar extension of surperficial colored steel pressure doorframe (2) in proper order.
11, multistage shield door as claimed in claim 10 is characterized in that:
The length L 4 of described color steel sheet overlap is 120mm, and the compacting of described stainless steel door pocket door and lap width L3 are 120mm.
12, as any one described multistage shield door among the claim 1-11, it is characterized in that:
Any and thickness that described door body (1) surface and the employing of doorframe (2) surfacing are selected from corrosion resistant plate, copper coin, aluminium sheet, steel plate is that the high conductivity material of 1.2mm is made; The thickness of door body (1) is 55mm, door body (1) is made up of structural framework (7), wire drawing stainless steel surface layer (9), insulation filler (6), ruggedized construction (8), wire drawing stainless steel surface layer (9) is separately positioned on the both side surface of structural framework (7), and insulation material (6) is filled in the space between the wire drawing stainless steel surface layer (9); Described first, second made by tin-phosphor bronze C5191 or C5210 with the 3rd screen unit, and the width of shield door (20) is between the 600-1800mm, highly between 1800-2700mm.
13, as any one described multistage shield door among the claim 1-12, it is characterized in that:
Twice 40 purpose copper mesh are set in the hole of door lock (3), fixedly installing thickness on described door body (1) is the stainless steel connection hinge (4) of 4-6mm, this connection hinge (4) comprises the web joint (4-1) that is fixedly installed on described door body (1) surface and is fixed on hinge (4-2) on the doorframe (2), so that situation Xiamen body (1) the energy freely openable that cover flanging frame trough rim (11) is being arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410029844 CN1564265B (en) | 2004-03-30 | 2004-03-30 | Multi-stage shielding gate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410029844 CN1564265B (en) | 2004-03-30 | 2004-03-30 | Multi-stage shielding gate |
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| CN1564265A true CN1564265A (en) | 2005-01-12 |
| CN1564265B CN1564265B (en) | 2011-05-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409943A (en) * | 2011-11-02 | 2012-04-11 | 无锡市海联舰船附件有限公司 | Marine aluminum shielding door |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87202374U (en) * | 1987-02-28 | 1988-03-02 | 机械工业部上海电缆研究所 | Screening gate for full screened room |
| CN1049717C (en) * | 1992-10-19 | 2000-02-23 | 黄联鸿 | Reinforced theft-proof steel door with multi-gas-tight and sound-proof |
| JP2001284873A (en) * | 2000-03-30 | 2001-10-12 | Pioneer Electronic Corp | Door opener |
| JP2003069274A (en) * | 2001-08-22 | 2003-03-07 | Takenaka Komuten Co Ltd | Electromagnetic wave shielding door |
| JP2003214058A (en) * | 2002-01-24 | 2003-07-30 | Tadahiro Omi | Door of clean room |
| CN2549145Y (en) * | 2002-05-20 | 2003-05-07 | 中国人民解放军总参谋部工程兵第四设计研究院 | Electric sealing structure of protective equipment door |
-
2004
- 2004-03-30 CN CN 200410029844 patent/CN1564265B/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409943A (en) * | 2011-11-02 | 2012-04-11 | 无锡市海联舰船附件有限公司 | Marine aluminum shielding door |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1564265B (en) | 2011-05-11 |
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