CN202945975U - Electromagnetic shield door with long-lasting efficiency - Google Patents
Electromagnetic shield door with long-lasting efficiency Download PDFInfo
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- CN202945975U CN202945975U CN 201220667449 CN201220667449U CN202945975U CN 202945975 U CN202945975 U CN 202945975U CN 201220667449 CN201220667449 CN 201220667449 CN 201220667449 U CN201220667449 U CN 201220667449U CN 202945975 U CN202945975 U CN 202945975U
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- door
- hinge
- doorframe
- door body
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Abstract
The utility model provides a electromagnetic shield door with long-lasting efficiency. A door frame of a hatch and a door body are connected through a hinge; beryllium bronze shielding spring leaves and shielding webby strips are compressed on the periphery of the door frame; rubber weather strips, and blades perpendicular to the door body are mounted on the periphery of the door body; handles are mounted inside and outside the door body and drive a pull rod; a lock plunger is hinged on one side, away from the hinge, of the door body, and rotates under the action of the pull rod; and a door lock corresponds to the lock plunger. The high-efficiency electromagnetic shield door can meet the requirement of I-level electromagnetic shielding shelters in the existing universal standard of the shelter industry, and the electromagnetic shielding efficiency is long-lasting; the structural form of the door lock of the hatch has unique design, simple and light operation in opening/closing, and the size of the opening of the hatch is guaranteed; and the structural form of the hinge of the hatch of the shelter can solve the high damaging possibility of the beryllium bronze shielding spring leaves effectively.
Description
Technical field
The present invention relates to a kind of screening arrangement, the mechanism of long-acting electromagnetic shielding between especially a kind of applicable shelter or test.
Background technology
In existing shelter industry universal standard, electromagnetic shielding square cabin is divided into I, II, three shielding grades of III, wherein I level electromagnetic shielding square cabin requires the highest, specific requirement is when electromagnetic frequency scope 90k ~ 18GHz, its attenuation should be not less than 60dB, and when the On/Off shelter door, its hatch door handle moment should be not more than 40N.m.
For satisfying above-mentioned requirements, existing electromagnetic shielding square cabin door has been taked diversified form of structure, the shielding material of choosing is also of all kinds, if any the electromagnetic shielding square cabin door adopt the form of structure that twice (totally 4 roads) shielding silk screen bar respectively is installed on doorframe and door body, the employing that has is installed 2 ~ 3 road beryllium-bronze shielding fingers on doorframe and door body form.The frame mode of hatch door door lock also is not quite similar, and comprises 3 pin locks, 3 roller locks and 2 roller locks etc.
According to experimental test and routine use situation, all more or less there is following defective in the electromagnetic shielding square cabin door of above form of structure:
A) electromagnet shield effect is short, and persistence is poor;
B) during the On/Off shelter door, its hatch door handle moment is often greater than 40N.m, though the hatch door On/Off moment of some structures satisfies index request, its pulling force of outwards opening is too large;
C) there is defective in the form of structure due to the Cabin door lock, causes the port trafficability characteristic of hatch door to be under some influence, and because existing projection easily to cause safety problem;
D) because of the form of structure problem of Cabin door hinge, cause the beryllium-bronze shielding finger often to damage.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of long-acting energy electromagnetic shield door, can satisfy the requirement of I level electromagnetic shielding square cabin in existing shelter industry universal standard, electromagnet shield effect is lasting; The form of structure design of hatch door door lock is ingenious, and On/Off is simple to operate, light, guarantees the port size of hatch door; The form of structure of Cabin door hinge can solve the flimsy drawback of beryllium-bronze shielding finger effectively.
The technical solution adopted for the present invention to solve the technical problems is: comprise hatch door, door lock and hinge.
Hatch door comprises doorframe and door body, and doorframe and door body are take wrought aluminium as frame, and doorframe is fixed on wallboard of shelter, and the door body is filled flame retardant polyurethane foam material in frame, then aluminium coating matter covering, and doorframe and door body are connected through the hinge; The doorframe surrounding has groove with the folded part of door body weight, compress in groove some roads beryllium-bronze shielding finger and shielding silk screen bar are arranged, door body surrounding and doorframe lap have groove, rubber weather strip is installed in groove, door body surrounding is equipped with the blade perpendicular to the door body, and the door body stretches among the beryllium-bronze shielding finger when closed;
Door lock comprises handle, locking bolt, pull bar and door lock block, the medial and lateral of door body are separately installed with handle, and handle rotates along central axis, thereby drive pull bar along limit, door side knee-action, locking bolt is hinged on a body away from a side of hinge, rotates under the pull bar effect; The door lock block is arranged on the doorframe edge, and the position is corresponding with locking bolt, realizes locking or the release of hatch door;
Hinge comprises hinge seat, rotating shaft and hinge plate, and wherein hinge seat is arranged on doorframe, and hinge plate fellow disciple body connects, and hinge seat and hinge plate are hinged by rotating shaft.
Described doorframe and door body adopt the section bar pressing drawing and are welded, and the surface is carried out the nickel-phosphorus alloy plating and processed.
Described hinge has adopted sinkage type structure, namely the installed surface of hinge seat be parallel to the installed surface of hinge plate parallel and under be sunken in doorframe.
Described rotating shaft material is steel.
The invention has the beneficial effects as follows:
The doorframe of this long-acting energy electromagnetic shield door, door body adopt the section bar pressing drawing and are welded, the surface is carried out the nickel-phosphorus alloy plating and is processed, abrasion resistance and conductance significantly strengthen, size and form and position tolerance are accurate, just, intensity is high, and 2 ~ 3 road beryllium-bronze shielding fingers and 1 road shielding silk screen bar is installed, and can realize good electrical continuity, thereby satisfy the requirement of I level electromagnetic shielding square cabin in existing shelter industry universal standard, and electromagnet shield effect is lasting.
After hatch door is closed, in the middle of twice beryllium-bronze shielding finger on blade insertion doorframe on the door frame body sectional material, the beryllium-bronze shielding finger is under the effect of himself spring force, apply normal pressure to door frame body sectional material blade, therefore form the frictional force between beryllium-bronze shielding finger and door frame body sectional material blade when the hatch door On/Off, namely all to bear one inside and outside " mouth " word four limits and enclose so frictional force, this power is very large, overcome as simple dependence manpower, with difficult.Form of structure has cleverly been adopted in the design of this door lock, adopt frame for movement to move to overcome this frictional force, make the ON/OFF hatch door convenient and strength-saving, satisfy the index request that existing shelter industry universal standard middle deck door handle moment is not more than 40N.m, and the installation site of door lock block is greater than the port size of doorframe, be that hatch door does not have ridge at passage port, thereby neither affect trafficability characteristic, stopped again the occurrence probability of safety problem.
When withstanding shocks due to the beryllium-bronze shielding finger, easy fracture damages, thereby reduces the capability of electromagnetic shielding of shelter.Guarantee the persistent emphasis of shelter capability of electromagnetic shielding therefore how to address this problem with becoming.Different with in the past traditional hinge, this hinge has adopted the form of structure of sunk type breakthroughly, it is the installed surface of hinge seat certain distance of sinking in the shelter, parallel but be in different planes with the installed surface of hinge plate, thereby can realize that the doorframe blade vertically enters when inserting twice beryllium-bronze shielding finger, minimum is reduced in the impact that makes the beryllium-bronze shielding finger bear, greatly improved the application life of shielding finger, and then reach the long-acting energy of shelter door electromagnetic shielding, also make that door handle moment effectively reduces when the hatch door On/Off simultaneously.
This long-acting can electromagnetic shield door design objective and reach situation and contrast as shown in table 1 with other shield door.
Table 1 a long-acting energy electromagnetic shielding door section basic parameter test result
Show through the experimental test result, this is long-acting can electromagnetic shield door have solved in the past that other form of structure square-cabin shield door electromagnet shield effect index unstable properties, persistence are poor, hatch door On/Off moment can not satisfy the problem of existing shelter industry universal standard code, and pulling force is too large and affect port trafficability characteristic and the safety issue of hatch door when efficiently solving hatch door and outwards opening.
Description of drawings
Fig. 1 is shelter door sectional drawing when closing;
Fig. 2 is the hinge elevation;
Fig. 3 is the hinge side view;
Fig. 4 is the inner elevation of installing of door lock;
Fig. 5 is door lock installation side view;
In figure, 1. a body, 2. a body blade, 3. beryllium-bronze shielding finger, 4. rubber weather strip, 5. hinge, 6. doorframe, 7. shielding silk screen bar, 8. hinge plate, 9. rotating shaft, 10. hinge seat, 11. locking bolts, 12. the door lock block, 13. pull bars, 14. trippers of saving oneself, 15. outer handles, 16. Internal handles.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
This long-acting can generally being used for to reach higher electromagnet shield effect index request between electromagnetic shielding square cabin or shielding test by electromagnetic shield door.
Important technological parameters:
A) electromagnet shield effect: when electromagnetic frequency scope 90k ~ 18GHz, its attenuation is not less than 60dB;
B) hatch door On/Off moment: be not more than 40N.m;
Pulling force when c) hatch door is outwards opened: 0 ~ 20N.
As shown in Figure 1, this long-acting can composition by hatch door, door lock and hinge three parts by electromagnetic shield door.
Hatch door is comprised of doorframe, door body, shielding material (beryllium-bronze shielding finger, shielding silk screen bar) and rubber weather strip.The frame material of doorframe and door body is generally wrought aluminium, and doorframe is through being fixed on after welding fabrication on wallboard of shelter; The frame of door body also needs welding fabrication, then fills flame retardant polyurethane foam material in frame, then is aided with the inside and outside covering composition of aluminium matter shelter door body.Doorframe and door body pass through 3 of upper, middle and lower chain connection in a side, thereby realize the On/Off function of hatch door.The beryllium-bronze shielding finger is arranged in groove on doorframe by the mode that compresses, and 2 ~ 3 roads are installed usually, and shielding silk screen bar is fixed in the groove of doorframe equally, and both are jointly in order to realize the electro-magnetic screen function of shelter hatch door.Rubber weather strip is arranged in the groove of a body usually, is used for satisfying the watertight of shelter, airtight requirement.Door body surrounding is equipped with the blade perpendicular to the door body, and the door body stretches among the beryllium-bronze shielding finger when closed.
As shown in Fig. 4,5, door lock is comprised of inside and outside handle, locking bolt, pull bar, door lock block and the tripper of saving oneself, and is arranged on a body away from the opposite side of hinge, is 3 roller locks form of structure (3 locking bolt lockings are namely arranged).Inside and outside handle is steel-casting, is arranged on respectively the inside and outside of a body, along central axis can be suitable/be rotated counterclockwise, thereby drive the pull bar knee-action, locking bolt under this effect along self rotating shaft suitable/be rotated counterclockwise; The door lock block is arranged on the doorframe edge, and the position is corresponding with 3 locking bolts, and locking bolt moves according to the track that presets in the door lock block, can realize the locking/release of hatch door under their acting in conjunction.The tripper of saving oneself is a cover release mechanism, is arranged on door lock Internal handle place, can realize that in the cabin, personnel can open hatch door, safe deliver from vault internally very soon by operating this device just in case in the situation that the outside door lock locking of shelter.
As shown in Fig. 2,3, hinge is comprised of hinge seat, rotating shaft and hinge plate, is used for connecting doorframe and door body, and wherein hinge seat is arranged on doorframe, and hinge plate fellow disciple body connects, and along the rotating shaft rotation, Men Tike opens 100 ° ± 5 °.The material of hinge is steel, needs to guarantee certain firm, requirement of strength.
Through theoretical calculation and test checking, final beryllium-bronze shielding finger type selecting model is 55-50400, and the sectional dimension specification (wide * height) of shielding silk screen bar is 12.70mm * 9.53mm, and the sectional dimension specification of rubber weather strip (wide * height) is 20mm * 7mm.
This long-acting can electromagnetic shield door from design produce complete after, carried out respectively the reliability test of hatch door On/Off 1000 times, abominable road surface preventing test and the front and back 3 times electromagnet shield effect testing experiment of 500km in 2011 ~ 2012 years.Experiment results proved, this long-acting energy electromagnetic shield door meet designing requirement originally fully.
Claims (4)
1. a long-acting energy electromagnetic shield door, comprise hatch door, door lock and hinge, it is characterized in that:
Hatch door comprises doorframe and door body, and doorframe and door body are take wrought aluminium as frame, and doorframe is fixed on wallboard of shelter, and the door body is filled flame retardant polyurethane foam material in frame, then aluminium coating matter covering, and doorframe and door body are connected through the hinge; The doorframe surrounding has groove with the folded part of door body weight, compress in groove some roads beryllium-bronze shielding finger and shielding silk screen bar are arranged, door body surrounding and doorframe lap have groove, rubber weather strip is installed in groove, door body surrounding is equipped with the blade perpendicular to the door body, and the door body stretches among the beryllium-bronze shielding finger when closed;
Door lock comprises handle, locking bolt, pull bar and door lock block, the medial and lateral of door body are separately installed with handle, and handle rotates along central axis, thereby drive pull bar along limit, door side knee-action, locking bolt is hinged on a body away from a side of hinge, rotates under the pull bar effect; The door lock block is arranged on the doorframe edge, and the position is corresponding with locking bolt, realizes locking or the release of hatch door;
Hinge comprises hinge seat, rotating shaft and hinge plate, and wherein hinge seat is arranged on doorframe, and hinge plate fellow disciple body connects, and hinge seat and hinge plate are hinged by rotating shaft.
According to claim 1 long-acting can electromagnetic shield door, it is characterized in that: described doorframe and door body adopt the section bar pressing drawing and are welded, the surface is carried out the nickel-phosphorus alloy plating and is processed.
According to claim 1 long-acting can electromagnetic shield door, it is characterized in that: described hinge has adopted sinkage type structure, namely the installed surface of hinge seat be parallel to the installed surface of hinge plate parallel and under be sunken in doorframe.
According to claim 1 long-acting can electromagnetic shield door, it is characterized in that: described rotating shaft material is steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220667449 CN202945975U (en) | 2012-12-03 | 2012-12-03 | Electromagnetic shield door with long-lasting efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220667449 CN202945975U (en) | 2012-12-03 | 2012-12-03 | Electromagnetic shield door with long-lasting efficiency |
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| CN202945975U true CN202945975U (en) | 2013-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220667449 Expired - Lifetime CN202945975U (en) | 2012-12-03 | 2012-12-03 | Electromagnetic shield door with long-lasting efficiency |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105064885A (en) * | 2015-07-21 | 2015-11-18 | 无锡市海联舰船附件有限公司 | Marine fireproof steel screen door |
| CN106114824A (en) * | 2016-07-01 | 2016-11-16 | 中航飞机股份有限公司西安飞机分公司 | A kind of electromagnetic protection structure of undercarriage door |
| CN110820838A (en) * | 2019-09-25 | 2020-02-21 | 天津瀚侨车体制造有限公司 | Shield door of radiation-proof cockpit of excavator |
| CN112261861A (en) * | 2020-11-06 | 2021-01-22 | 中国电子科技集团公司第十四研究所 | Sealing door with electromagnetic shielding function |
| CN113944417A (en) * | 2021-08-24 | 2022-01-18 | 永谐科技(滁州)有限公司 | Shielding pneumatic sector door |
| CN114033270A (en) * | 2021-10-15 | 2022-02-11 | 永谐科技(滁州)有限公司 | Shielding electric double-opening fan-shaped door |
| CN115095265A (en) * | 2022-07-08 | 2022-09-23 | 中国人民解放军陆军工程大学 | Electromagnetic shielding shelter door |
-
2012
- 2012-12-03 CN CN 201220667449 patent/CN202945975U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105064885A (en) * | 2015-07-21 | 2015-11-18 | 无锡市海联舰船附件有限公司 | Marine fireproof steel screen door |
| CN106114824A (en) * | 2016-07-01 | 2016-11-16 | 中航飞机股份有限公司西安飞机分公司 | A kind of electromagnetic protection structure of undercarriage door |
| CN106114824B (en) * | 2016-07-01 | 2018-04-10 | 中航飞机股份有限公司西安飞机分公司 | A kind of electromagnetic protection structure of undercarriage door |
| CN110820838A (en) * | 2019-09-25 | 2020-02-21 | 天津瀚侨车体制造有限公司 | Shield door of radiation-proof cockpit of excavator |
| CN112261861A (en) * | 2020-11-06 | 2021-01-22 | 中国电子科技集团公司第十四研究所 | Sealing door with electromagnetic shielding function |
| CN113944417A (en) * | 2021-08-24 | 2022-01-18 | 永谐科技(滁州)有限公司 | Shielding pneumatic sector door |
| CN114033270A (en) * | 2021-10-15 | 2022-02-11 | 永谐科技(滁州)有限公司 | Shielding electric double-opening fan-shaped door |
| CN115095265A (en) * | 2022-07-08 | 2022-09-23 | 中国人民解放军陆军工程大学 | Electromagnetic shielding shelter door |
| CN115095265B (en) * | 2022-07-08 | 2023-06-02 | 中国人民解放军陆军工程大学 | Electromagnetic shield Fang Cangmen |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130522 |