KR101630348B1 - Shielding room for emp - Google Patents

Shielding room for emp Download PDF

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Publication number
KR101630348B1
KR101630348B1 KR1020150190903A KR20150190903A KR101630348B1 KR 101630348 B1 KR101630348 B1 KR 101630348B1 KR 1020150190903 A KR1020150190903 A KR 1020150190903A KR 20150190903 A KR20150190903 A KR 20150190903A KR 101630348 B1 KR101630348 B1 KR 101630348B1
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KR
South Korea
Prior art keywords
door
pair
frame
shielding
body frame
Prior art date
Application number
KR1020150190903A
Other languages
Korean (ko)
Inventor
임재성
Original Assignee
주식회사 제이에스기술
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Priority to KR1020150190903A priority Critical patent/KR101630348B1/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
    • G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
    • G01R29/0821—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning rooms and test sites therefor, e.g. anechoic chambers, open field sites or TEM cells
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
    • G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
    • G01R29/0835—Testing shielding, e.g. for efficiency
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0001—Rooms or chambers
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0001—Rooms or chambers
    • H05K9/0003—Shielded walls, floors, ceilings, e.g. wallpaper, wall panel, electro-conductive plaster, concrete, cement, mortar

Abstract

The purpose of the present invention is to provide an electromagnetic wave shielding room which is capable of reducing installation space occupied by fingers and knife edges, reducing the thickness of a honeycomb without worrying about a leakage of an electromagnetic wave, and smoothly transmitting heat generated inside thereof. The electromagnetic wave shielding room comprises: a body which comprises a body frame having a room structure including an entrance, a pair of body-side shielding brackets which are spaced apart from each other at same intervals and surrounds the vicinity of the entrance of the body frame, a pair of body-side fingers which are provided on surfaces facing each other of the pair of body-side shielding brackets, and a body-side knife edge which surrounds the pair of body-side shielding brackets; and a shielding door which comprises a door frame which is hinged on the body frame and opens/closes the entrance of the body frame, a door cover which covers outside of the door frame, a door-side knife edge which is provide on a point corresponding to the pair of body-side shielding brackets of the body frame and, when the door frame is closed, are press-fitted between the pair of body-side fingers, a pair of door-side shielding brackets which are provided on a point corresponding to the body-side knife edge of the body frame and are spaced apart from each other at same intervals, and a pair of door-side fingers which are provided on faces facing each other of the pair of door-side shielding brackets and in which, when the door frame is closed, the body-side knife edge is press-fitted.

Description

{SHIELDING ROOM FOR EMP}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic wave shielding room comprising a body in the form of a room and a door for opening and closing the doorway of the body, and more particularly to an electromagnetic wave shielding room in which a shielding structure between a body and a door can be downsized, To a configured electromagnetic wave shielding room.

The measurement of the degree of influence of noise or electromagnetic waves generated in an electronic device on a human body or other electronic devices is called an electromagnetic wave test or an electromagnetic compatibility (EMC) test.

As electronic devices become more and more digital and faster, the circulating currents in the circuits of electronic devices have increased, and electronic devices have become more likely to generate more noise and electromagnetic waves. For this reason, regulations are being strengthened against electromagnetic noise or electromagnetic waves generated in electronic devices, and various electromagnetic wave test systems for measuring whether the electronic devices satisfy such regulations are being proposed.

Among the electromagnetic wave test systems, there is a system for measuring conducted noises (Conducted Emissions), and a system for measuring radiated emissions. Noise or electromagnetic waves generated in electronic devices can be propagated to other electronic devices through wired lines such as a power source. Measuring the noise propagated to other electronic devices through a wire connected to the electronic device is called conductive noise measurement. Alternatively, an electronic device can radiate noise or electromagnetic waves into the air according to the flow of electromagnetic energy in the circuit. The measurement of noise or electromagnetic waves radiated to the air is called a radio noise measurement.

On the other hand, the conductive noise and the radioactive noise can occur simultaneously in one electronic device. In order to measure the noise of either one, it is necessary to block the interference of other noise.

Accordingly, the electromagnetic wave test system must include an electromagnetic wave shielding door to avoid interference with the external noise. The structure of the electromagnetic wave door is largely divided into a sliding type door that slides to the side and a door that rotates the door based on the hinge axis, The sliding door is suitable for a large capacity shielding room, and the swing door has a structure suitable for a small capacity shielding room.

A shielding room having a swing-type door is provided with a pair of fingers side by side around the doorway of the body, and a knife edge inserted between the pair of fingers is installed at the inner edge of the door. Accordingly, when the door is closed, the knife edge provided on the door is inserted between the pair of fingers, thereby shielding the door from the body. In this case, in order to improve the shielding force between the body and the door, a method is employed in which two pairs of fingers are provided on the body and two knife edges are provided on the door so that the body and the door are shielded in double If the pair of fingers is installed in two rows as described above, it takes a lot of space for finger installation. That is, since the edge of the doorway of the shielded room is thickened, there are disadvantages that many restrictions are imposed on the design of the shielded room.

In addition, a honeycomb having a plurality of air holes formed therein for discharging the heat generated inside the shielded room to the outside. If the length of the air hole formed in the conventional honeycomb is too short, the electromagnetic wave may leak to the outside through the air hole have. Therefore, the honeycomb must be manufactured to have a thickness equal to or greater than the reference value so that the length of the vent hole can be secured to a certain level or more. When the thickness of the honeycomb increases, the honeycomb protrudes to the inside of the shielding room.

KR 10-1518793 B1

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above problems, and it is an object of the present invention to reduce the installation space occupied by the fingers and the knife edge, reduce the thickness of the honeycomb without fear of leakage of electromagnetic waves, And to provide an electromagnetic wave shielding room capable of emitting electromagnetic waves.

According to an aspect of the present invention, there is provided an electromagnetic wave shielding room comprising a body frame having a doorway, a pair of body side shielding brackets spaced at equal intervals from each other and surrounding the doorway of the body frame, A body having a pair of body side fingers provided on mutually facing surfaces of the pair of body side shielding brackets and a body side knife edge surrounding the pair of body side shielding brackets; And a door cover hinged to the body frame to open and close the doorway of the body frame, a door cover covering an outer side of the door frame, and a door frame provided at a position corresponding to the pair of body side shielding brackets of the body frame, A pair of door side knife edges provided at a position corresponding to the body side knife edge of the body frame, the door side knife edges being pushed into between the pair of body side fingers when the door frame is closed; And a pair of door side fingers provided on mutually facing surfaces of the pair of door side shield brackets and press-fitted into the body side knife when the door frame is closed .

The pair of body side shielding brackets may include a pair of body side shielding brackets, one side of which is fitted with the body side fingers in a horizontal direction, the other side of which is stacked on the body frame outer side and is coupled to the body frame by body side fastening bolts, One side of the pair of door side shield brackets mounted with the door side fingers protrudes in the horizontal direction and the other side is stacked on the inside side of the door frame and is coupled to the door frame by the door side fastening bolts.

The body side knife edge projects horizontally from the other end side shielding bracket and the door side knife edge projects horizontally from the other end side of the door side shielding bracket.

The body includes an upper frame vertically erected along a top edge of the body frame, a side honeycomb mounted to penetrate the side wall of the body frame, a top surface honeycomb mounted to penetrate the ceiling of the body frame, A blowing fan mounted so as to penetrate through the frame, and an upper plate covering an upper portion of the upper frame.

The side surface honeycomb includes a plurality of side through holes, and the side through holes are arranged to be inclined in a direction in which an inner end is higher than an outer end.

A center tube having a pipe insertion hole formed in a pipe shape passing through a ceiling of the body frame and having a cable insertion groove having a length in an up and down direction on an inner side surface thereof and a coupling nut for fixing the center pipe to a ceiling of the body frame, And a taper pin formed into a cylindrical shape having a smaller diameter and inserted into the center tube,

And a waveguide for optical communication for pressing and fixing the communication cable when the taper pin is inserted into the center tube in a state where the communication cable is seated in the cable insertion groove.

In the electromagnetic wave shielding room according to the present invention, the installation space occupied by the fingers and the knife edge is reduced, the degree of freedom of design is very high, the thickness of the honeycomb can be reduced without fear of electromagnetic wave outflow, There is an advantage that it can be.

1 is a perspective view of an electromagnetic wave shielding room according to the present invention.
2 is an exploded perspective view of an electromagnetic wave shielding room according to the present invention.
3 is a horizontal sectional view of an electromagnetic wave shielding room according to the present invention.
4 is a horizontal sectional view of an electromagnetic wave shielding room according to the present invention in which a shielding door is opened.
5 and 6 are horizontal cross-sectional views showing a coupling structure of a finger and a knife edge according to opening and closing of a shielding door.
7 is a vertical sectional view of an electromagnetic wave shielding room according to the present invention.
8 is a sectional view of a side honeycomb included in the electromagnetic wave shielding room according to the present invention.
9 is an exploded perspective view of an optical communication wave guide included in an electromagnetic wave shielding room according to the present invention.
10 is an exploded perspective view showing a door opening / closing structure included in an electromagnetic wave shielding room according to the present invention.

Hereinafter, embodiments of the electromagnetic wave shielding room according to the present invention will be described in detail with reference to the accompanying drawings.

3 is a horizontal sectional view of an electromagnetic wave shielding room according to the present invention, and FIG. 4 is a sectional view of the electromagnetic wave shielding room according to the present invention. Sectional view of an electromagnetic wave shielding room according to the present invention.

The electromagnetic wave shielding room according to the present invention is a kind of equipment having an electromagnetic wave shielding function so that the electromagnetic wave generated from the inside can not be leaked to the outside. The body 100 includes an internal space of a predetermined size, And a shielding door 200 for shielding a space entrance.

When the shielding door 200 is configured to simply cover the entrance of the body 100 when the shielding door 200 is closed, electromagnetic waves may flow out through the space between the body 100 and the shielding door 200, A pair of fingers and a knife edge are provided at a portion where the doors 200 are in contact with each other. Recently, a pair of fingers and a knife edge are provided in two rows for improving the shielding force between the body 100 and the shielding door 200 . In this case, in the conventional shielding room, all the two rows of fingers are provided on the body 100, and two rows of knife edges are generally provided on the shielding door 200. Since the fingers are not independently raised, As shown in Fig.

Since a pair of shielding brackets to which the fingers are mounted as described above requires a wider mounting space than the knife edge, as described above, in order for the two rows of fingers, that is, the four shielding brackets, to be provided in the body 100, There is a problem that it must be ensured as a mounting space.

The electromagnetic wave shielding room according to the present invention is characterized in that the shielding bracket and the knife are dispersed in the body 100 and the shielding door 200 in order to solve the above problems. That is, the body 100 includes a body frame 110 having a room structure having an entrance and a pair of body side shielding brackets 112 spaced at equal intervals from each other and surrounding the doorway of the body frame 110, A pair of body side fingers 113 provided on mutually facing surfaces of the pair of body side shielding brackets 112 and a body side knife edge 112 surrounding the pair of body side shielding brackets 112, (114). The shielding door 200 may include a door frame 210 hinged to the body frame 110 to open and close an entrance of the body frame 110 and a door cover 210 covering the outside of the door frame 210 The door frame 210 is provided at a position corresponding to the pair of body side shielding brackets 112 of the body frame 110 and is inserted into the space between the pair of body side fingers 113 when the door frame 210 is closed. Side knife edge 214 and a pair of door side shield brackets 212 spaced at equal intervals from each other at a position corresponding to the body side knife edge 114 of the body frame 110, And a pair of door side fingers 213 which are provided on mutually facing surfaces of the pair of door side shield brackets 212 and into which the body side knife edge 114 is pressed when the door frame 210 is closed .

When the door frame 210 is closed so as to cover the doorway of the body frame 110, the body side knife edge 114 is press-fitted between the pair of door side fingers 213 and the door side knife edge 214 is pushed The door frame 210 and the body frame 110 are completely shielded from each other by being press-fitted into the body side fingers 113. At this time, the mounting positions of the fingers 113 and 213 and the knife edges 114 and 214, Will be described in detail with reference to Figs. 5 and 6. Fig. The fingers 113 and 213 and the knife edges 114 and 214 are substantially the same in a conventional shielding room so that the shapes and functions of the fingers 113 and 213 and the knife edges 114 and 214 Will not be described in detail.

As described above, the electromagnetic wave shielding room according to the present invention includes two fingers 113 and 213 and two knife edges 114 and 214 for shielding the contact surface between the body frame 110 and the door frame 210 The relatively narrow knife edges 114 and 214 are dispersed in the body frame 110 and the door frame 210 respectively and the relatively wide fingers 113 and 213 are also separated from the body frame 110 The door frames 210 are dispersed one by one so that the total installed area of the fingers 113 and 213 and the knife edges 114 and 214 is remarkably reduced.

The electromagnetic wave shielding room according to the present invention may further include a side honeycomb 132 mounted to penetrate the side wall of the body frame 110 so that the heat generated from the inside can be discharged to the outside, An upper frame 120 vertically installed along the upper edge of the body frame 110 to protect various components provided on the upper surface of the body frame 110, And an upper plate 122 covering an upper portion of the upper frame 120. The upper frame 120 is provided with a plurality of blowing fans 136. The heat generated in the body frame 110 is discharged to the outside through the upper surface honeycomb 134 and the blowing fan 136, The air flows into the body frame 110 through the side honeycomb 132.

When the length of the side through hole 133 is too short, the electromagnetic wave in the body frame 110 is transmitted through the side through hole 133 to the outside Lt; / RTI > Therefore, since the length of the side through hole 133 becomes longer as the thickness of the side honeycomb 132 becomes thicker, the risk of leakage of the battery is reduced However, as the thickness of the side honeycomb 132 increases, the internal space of the body frame 110 becomes narrower and the manufacturing cost of the side honeycomb 132 increases.

The electromagnetic wave shielding room according to the present invention has another feature in that the longitudinal direction of the side through hole 133 is changed in order to solve such a problem. The structure of such a side honeycomb 132 is described below Will be described in detail with reference to Figs. 7 and 8. Fig.

5 and 6 are horizontal cross-sectional views showing a coupling structure of a finger and a knife edge according to the opening and closing of the shielding door 200. FIG.

5, the body frame 110 includes a pair of body side shielding brackets 112, body side knife edges 114, and roller bearings 152, each of which includes a body side finger 113, The guide bracket 150 is provided. The door frame 210 is also provided with a pair of door side shield brackets 212 to which the door side fingers 213 are respectively mounted, a door side knife edge 214 and a bearing bracket 212 into which the roller bearing 152 can be inserted. Respectively.

In order to simplify the coupling structure of the shield bracket, the pair of body side shield brackets 112 are integrally joined to the body frame 110, and the pair of door side shield brackets (212) are integrally joined to the door frame (210). That is, one side of the pair of body side shield brackets 112 on which the body side fingers 113 are mounted is horizontally protruded and the other side thereof is stacked on the outer side of the body frame 110, Is coupled to the body frame (110) by a body frame (116). One side of the pair of door side shield brackets 212 on which the door side fingers 213 are mounted is horizontally protruded and the other side is laminated on the inner side surfaces of the door frame 210, 216 to the door frame 210.

5, when the door frame 210 is in close contact with the body frame 110 in a state where the door 200 is opened, that is, when the door frame 210 is separated from the body frame 110, The body side knife edge 114 is pushed into between the pair of door side fingers 213 and the door side knife edge 214 is pressed into between the pair of body side fingers 113 as shown in FIG. The roller bearing 152 is slidably inserted into the bearing bracket 230 when the bearing bracket 230 is lifted while the door frame 210 is in close contact with the body frame 110, The locked state can be maintained. The structure in which the shielding door 200 is locked by inserting the roller bearing 152 into the bearing bracket 230 is substantially the same as that of the conventional shielding room, and a detailed description thereof will be omitted.

At this time, the body side fastening bolts 116 are required to attach the pair of body side shield brackets 112 to the body frame 110, and a pair of door side shield brackets 212 are attached to the door frame 210 Side coupling bolts 216 are required to be attached to the body frame 110. In order to install both of the two shielding brackets on the body frame 110, a pair of shielding brackets and a pair of shielding brackets There is a problem that a space for mounting the shielding bracket is required to be wide.

However, in the electromagnetic wave shielding room according to the present invention, as shown in FIGS. 5 and 6, the shielding bracket and the knife edge are evenly distributed to the body frame 110 and the door frame 210, It is possible to minimize the distance between the door 112 and the pair of door-side shielding brackets 212.

In the electromagnetic wave shielding room according to the present invention, the body side knife edge 114 is integrally formed with the body side shielding bracket 112, and the door side knife edge 214 is integrally formed with the door side shielding bracket 212 There is another advantage in that no separate fastening unit is required for joining body side knife edge 114 and door side knife edge 214. In other words, the body side knife edge 114 protrudes in a horizontal direction (downward direction in FIG. 6) from the other end of the one body side shielding bracket 112. The door-side knife edge 214 protrudes from the other end of the door-side shielding bracket 212 in the horizontal direction (upward in FIG. 6).

When the body side knife edge 114 is integrally formed with the body side shielding bracket 112 and the door side knife edge 214 is integrally formed with the door side shielding bracket 212 as described above, Since all the knife edges and all the shielding brackets can be joined together only by fastening the door 116 and one door side fastening bolt 216, the manufacturing process is simplified.

FIG. 7 is a vertical sectional view of an electromagnetic wave shielding room according to the present invention, and FIG. 8 is a sectional view of a side surface honeycomb 132 included in an electromagnetic wave shielding room according to the present invention.

The electromagnetic wave shielding room according to the present invention includes a side face honeycomb 132 on the left and right sides of the body frame 110 for discharging the internal heat to the outside and a top face honeycomb 134 on the ceiling face of the body frame 110 do. As shown in FIG. 8, the plurality of side through holes 133 formed in the side honeycomb 132 may be inclined at an inner edge higher than the outer edge.

The side surface honeycomb 132 having the side through holes 133 arranged in an inclined manner can have a longer length of the side through holes 133 than the side surface honeycomb 132 having the side through holes 133 arranged horizontally Therefore, there is an advantage that the outflow of the electromagnetic wave through the side through hole 133 can be effectively prevented.

That is, when the side through holes 133 are inclined, the length of the side through holes 133 can be longer than the thickness of the side honeycomb 132. Therefore, The thickness of the side honeycomb 132 can be minimized.

In addition, when the side through holes 133 are arranged obliquely, cold outside air can flow into the body frame 110 more smoothly through the side through holes 133, It is also possible to obtain the advantage.

9 is an exploded perspective view of an optical communication wave guide 140 included in an electromagnetic wave shielding room according to the present invention.

Generally, in the electromagnetic wave shielding room, the communication cable 10 has to flow into the inside. When the communication cable 10 is simply installed to penetrate the body frame 110, electromagnetic waves are leaked through the portion where the communication cable 10 penetrates There is a concern.

Therefore, the electromagnetic wave shielding room according to the present invention can prevent the electromagnetic wave inside the body frame 110 from flowing out to the outside while allowing the communication cable 10 to flow into and be fixed to the inside of the body frame 110, 140 may be provided.

The waveguide for optical communication 140 includes a center tube 142 having a pipe shape passing through the ceiling of the body frame 110 and formed with a cable insertion groove 144 having a length in the vertical direction on the inner side, A coupling nut 146 for fixing the center tube 142 to the ceiling of the body frame 110 and a taper pin (not shown) formed into a cylindrical shape having a smaller diameter toward the lower side and inserted into the center tube 142 148). The taper pin 148 is inserted into the center pipe 142 in a state where the communication cable 10 is seated in the cable insertion groove 144. Since the diameter of the taper pin 148 is increased toward the upper side, Is inserted into the center pipe 142, the communication cable 10 is pressed and fixed between the outer surface of the taper pin 148 and the cable insertion groove 144.

Therefore, when the communication cable 10 is inserted through the optical waveguide 140, the point of penetration of the communication cable 10 is completely sealed regardless of the diameter of the communication cable 10, It is possible to prevent the phenomenon that the electromagnetic wave of the electromagnetic wave is leaked to the outside.

10 is an exploded perspective view showing a door opening / closing structure included in an electromagnetic wave shielding room according to the present invention.

The electromagnetic wave shielding room according to the present invention is configured such that the shielding door 200 is opened or closed by being engaged with or disengaged from the roller bearing 152 of the guide bracket 150 as the bearing bracket 230 is lifted and lowered, The bracket 230 can be raised and lowered automatically by the driving cylinder 240. Accordingly, the user can open / close the opening / closing door 200 only by operating the driving cylinder 240, and can also control the opening / closing of the plurality of opening / closing doors 200 remotely in the central control room.

At this time, the electromagnetic wave shielding room according to the present invention is further characterized in that a user can manually open and close the opening and closing door 200. That is, the shielding door 200 included in the electromagnetic wave shielding room according to the present invention includes a pinion gear 260 mounted on the door frame 100 with a rotatable structure, and a pinion gear 260 mounted on one side of the bearing bracket 230, And a pinion gear 260 coupled to the pinion gear 260 and coupled to the pinion gear 260. The pinion gear 260 is connected to the pinion gear 260 by a ratchet wheel 250. The pinion gear 260 is coupled to the door cover 200 in a rotatable manner, (270) may be additionally provided.

When the user presses the emergency button in the event of an emergency such as a failure, power outage, fire, etc., the pressure of the drive cylinder 240 is released, and the user rotates the pinion gear 260 by holding the opening / closing handle 270 by hand, The bearing bracket 230 can be detached from the roller bearing 152 of the guide bracket 150 and thus the opening and closing door 200 can be manually opened and closed.

The door bracket 230 is lifted and opened and closed using the pinion gear 260 and the pinion gear 260 in the present embodiment, The power transmission structure for opening and closing may be applied in various structures other than the structure shown in this embodiment.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. It will also be appreciated that many modifications and variations will be apparent to those skilled in the art without departing from the scope of the invention.

10: Communication cable 100: Body
110: body frame 112: body side shielding bracket
113: body side finger 114: body side knife edge
116: body side fastening bolt 120: upper frame
122: top plate 132: side honeycomb
133: side through hole 134: upper surface honeycomb
136: blower fan 140: wave guide for optical communication
142: center tube 144: cable insertion groove
146: fastening nut 148: taper pin
150: guide bracket 152: roller bearing
200: Shielding door 210: Door frame
212: door side shielding bracket 213: door side finger
214: Door side knife edge 216: Door side fastening bolt
220: door cover 230: bearing bracket
240: driving cylinder 250:
260: Pinion gear 270: Opening / closing handle

Claims (6)

A pair of body side shielding brackets spaced at equal intervals from each other and surrounding the doorway of the body frame, and a pair of body side shielding brackets spaced at equal intervals from each other, A body having a pair of body side fingers and a body side knife edge surrounding the pair of body side shielding brackets; And
A door cover hinged to the body frame to open and close an entrance of the body frame, a door cover covering an outer side of the door frame, and a door provided at a position corresponding to the pair of body side shielding brackets of the body frame, A door side knife edge which is press-fitted between the pair of body side fingers when the frame is closed, and a pair of door side shielding parts which are provided at positions corresponding to the body side knife edges of the body frame, And a pair of door side fingers provided on mutually facing surfaces of the pair of door side shield brackets and press-fitted into the body side knife when the door frame is closed,
A center tube having a pipe insertion hole formed in a pipe shape passing through a ceiling of the body frame and having a cable insertion groove having a length in an up and down direction on an inner side surface thereof and a coupling nut for fixing the center pipe to a ceiling of the body frame, And a taper pin formed into a cylindrical shape having a smaller diameter and inserted into the center tube,
Further comprising an optical communication waveguide for pressing and fixing the communication cable when the taper pin is inserted into the center tube while the communication cable is seated in the cable insertion groove. The method according to claim 1,
The pair of body side shielding brackets may include a pair of body side shielding brackets, one side of which is fitted with the body side fingers in a horizontal direction, the other side of which is stacked on the body frame outer side and is coupled to the body frame by body side fastening bolts,
The pair of door side shield brackets are configured such that one side on which the door side fingers are mounted is horizontally protruded and the other side is stacked on the inside side of the door frame and is coupled to the door frame by a door side fastening bolt Electromagnetic wave shielding room. The method of claim 2,
The body side knife edge protrudes in the horizontal direction from the other end side of the one body side shield bracket,
Wherein the door side knife edge protrudes horizontally from the other end side of the door side shield bracket. The method according to claim 1,
The body,
An upper frame mounted vertically along a top edge of the body frame, a side face honeycomb mounted to penetrate the side wall of the body frame, a top face honeycomb mounted to penetrate the ceiling of the body frame, And an upper plate covering an upper portion of the upper frame. The method of claim 4,
The side honeycomb includes a plurality of side through holes,
Wherein the side through holes are arranged to be inclined in a direction in which an inner end is higher than an outer end. delete
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114295900A (en) * 2021-12-02 2022-04-08 中国人民解放军92728部队 Method and system for measuring shielding effectiveness of electromagnetic shielding door

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0821789B2 (en) * 1987-06-25 1996-03-04 大成建設株式会社 Radio wave shield structure with door
KR101478552B1 (en) * 2013-01-29 2015-01-02 주식회사 대호테크 Door for EMP shielding
KR101518793B1 (en) 2013-12-27 2015-05-11 주식회사 이레테크 Shielding door opening and closing device for electromagnetic shielding chamber
KR20150123577A (en) * 2014-04-25 2015-11-04 주식회사 담스테크 Electromagnetic waves and electromagnetic shielded enclosure structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0821789B2 (en) * 1987-06-25 1996-03-04 大成建設株式会社 Radio wave shield structure with door
KR101478552B1 (en) * 2013-01-29 2015-01-02 주식회사 대호테크 Door for EMP shielding
KR101518793B1 (en) 2013-12-27 2015-05-11 주식회사 이레테크 Shielding door opening and closing device for electromagnetic shielding chamber
KR20150123577A (en) * 2014-04-25 2015-11-04 주식회사 담스테크 Electromagnetic waves and electromagnetic shielded enclosure structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114295900A (en) * 2021-12-02 2022-04-08 中国人民解放军92728部队 Method and system for measuring shielding effectiveness of electromagnetic shielding door

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