KR100257723B1 - Vertical conducting wall for electromagnetically shielded room - Google Patents

Abstract

It can be easily brought into the radio darkroom and functions as a vertical conductive surface electrically connected to the conductive ground on the bottom side of the radio darkroom, so that electric wave propagation wave measurement can be performed in the dark radio darkroom and can be easily taken out when not in use. Do not obstruct the measurement of radio noise interference.

A plurality of conductive panels 1A and 1B are folded and installed freely on the support frame 4 having the caster 5 at the bottom thereof, and connected and fixed on the conductive base 22 on the bottom side of the radio darkroom floor. It has a cross-sectional L-shaped connecting conductor plate 6 which can be connected to the conductive flat bar 23, and only this connecting conductor 6 is fixed to the lower portion of the lower conductive panel 1B. The connecting conductor plate 6 can be easily connected to or detached from the flat bar 23.

Description

Vertical conducting surface partition for radio darkroom

1 is a front view showing a first embodiment of a vertical conducting surface partitioner for a radio darkroom according to the present invention;

2 is the same rear view.

3 is the same side view.

4 is an enlarged cross-sectional view of a main part of the first embodiment.

5 is a front view showing a state where the conductive panel is folded in the first embodiment.

6 is an enlarged cross-sectional view of a main part showing a main part configuration of a second embodiment of the present invention;

* Explanation of symbols for main parts of the drawings

1A, 1B: conductive panel 2: conductive reinforcement

3: hinge 4: support frame

5: caster 6: connection conductor plate

7,31: screw 8, 32: nut

9: rougeh 10: mounting hole

12: screw 14: screw fixing support hardware

15: lower panel clamp 16: male thread

17: female thread member 20: bottom surface

21: copper plate 22: conductive ground

23 flat bar 30 conductive spring shape contact member

Field of the Invention The present invention is for a radio darkroom for use in measuring power propagation disturbances in a radio darkroom used for measuring radio noise noise and power propagation disturbances of equipment for generating radio noises that cause radio interference to other electronic devices. It relates to a vertical conducting diaphragm.

Among the so-called radio noise generated from electronic devices and impeding other devices, there are not only the noise noise radiations radiated directly into the space from the device body but also the power line interference waves transmitted along the power line connected to the device. For the measurement of the level (strength) of these interference waves, in the case of radiation noise interference waves, the entire dark chamber is covered with an electromagnetic shielding material (a conductive material for preventing the intrusion and leakage of electromagnetic waves), and the electromagnetic shielding material is removed except for the bottom surface of the electromagnetic shielding material surface. A radio darkroom having a surface covered with a radio wave absorber is used. In the case of the electric power conduction disturbance wave, an electromagnetic shielding chamber in which the entire dark chamber is covered only with the electromagnetic shielding material is sufficient.

However, apart from the radio dark room used for the measurement of radiation noise interference waves, it is uneconomical to install an electromagnetic shield room for the measurement of power wave interference waves. Since these power supply equipments can also be used for the measurement of power disturbance waves, it is perfect if the measurement of power disturbance waves can also be carried out in a radio darkroom used for the measurement of radiation noise disturbance waves. For this reason, it is necessary to install the equipment necessary for the measurement of power line disturbance waves in a radio dark room.

In recent years, the Federal Communications Commission (FCC) of the United States has adopted the American National Standard for Instrumentation (ANSI) standard for the measurement of jamming waves, and therefore, it is necessary to provide the conductive ground and the vertical conductive surface shown below. Regarding the vertical conducting surface, when measuring the electric power conduction disturbance wave of a desk type device, a vertically conducting surface of 2 m x 2 m or more is required, and this conductive surface is generally made of a metal plate. In addition, it is common to use the bottom surface of the electromagnetic shielding chamber for the conductive ground. In addition, the vertical conductive surface may need to be electrically connected to the conductive ground surface of the bottom surface.

By the way, as described above, in the case of adopting the standard on the measurement method of ANSI electric wave propagation disturbance wave, in the radio dark room for the purpose of measuring both the radiated noise interference wave and the electric power conduction disturbance wave of electronic equipment, Vertical front is needed. Since the vertical conducting surface is a radio reflector composed of a metal plate or the like, it is important to leave the vertical conducting surface exposed to the radio darkroom with the reflective surface exposed when measuring the radiation noise interference waves. Breaking away from the condition of covering other portions with the radio wave absorber, a disturbance in radio wave absorption characteristics occurs.

Background Art [0002] Conventionally, Japanese Patent Application Publication No. 49-46926 of the present applicant proposes a radio wave absorption reflecting apparatus having a structure in which a magnetic plate such as ferrite as a radio wave absorber is attached to one surface of a partition-shaped metal plate as a radio wave reflector. Although the reflecting surface of this radio wave absorption reflecting device has a size required as a vertical conducting surface and is electrically connected to the conductive ground (bottom), it can be used as a desired vertical conducting surface, but radiates the radio wave absorber on the other side. Corresponding to noise disturbance measurement, the thickness of the radio wave receiver on the side of the radio wave absorption reflector increases, and the structure is separated from the radio wave absorber provided on the wall on the side of the radio wave chamber. It is also difficult to arrange at a position not to be, and there is a problem that adversely affects the radio wave absorption characteristics of the radio darkroom. Therefore, it becomes difficult to measure the radiation noise interference waves while leaving the radio wave absorption reflecting apparatus or the vertical front surface (metal plate) for the measurement of power wave interference waves in the radio dark room. However, when the vertical conducting surface of 2m × 2m or more conforming to the ANSI standard is used, it is difficult to put it in and out of the radio darkroom as it is, and it is necessary to take measures against this.

In view of the above, the present invention can be carried easily into a radio darkroom, and functions as a vertical conduction surface electrically connected to the conductive ground on the bottom side of the radio darkroom, so that the electric power conduction disturbance measurement can be performed in the radio darkroom. It is an object of the present invention to provide a vertical conducting surface partitioner for a radio darkroom, which can be easily taken outside when not in use, so that it does not become an obstacle in radio noise interference measurement.

Other objects and new features of the present invention will be apparent from the embodiments described later.

In order to achieve the above object, the vertical conducting surface partitioner for the radio darkroom of the present invention folds a plurality of conductive panels on a support frame having a rotary moving means at the bottom and installs them freely, and simultaneously installs the conductive panel at the bottom of the radio darkroom. It is set as the structure which provided the electrically conductive means which can connect and detach | connect with respect to the electrically conductive earth surface of a surface side.

The conductive means has an L-shaped connection conductor that can be connected to the conductive flat bar and fixed to the conductive flat bar, and is connected to the conductive flat bar by a screw clamp. The connecting conductor is fixed to the lower portion of the lower conductive panel among the conductive panels. It may be a configured configuration.

The conductive means has a conductive spring-like contact member that can be press-contacted to a conductive flat bar that is connected to and adhered to the conductive ground. The conductive spring-experience contact member is fixed to a lower side of the lower conductive panel among the plurality of conductive panels. It may be a configured configuration.

In the vertical conducting surface partitioner for radio wave darkroom of the present invention, since a plurality of conductive panels are folded and installed freely on a support frame having a rotary moving means at the bottom, the radiation noise field strength is in a state where the conductive panels are folded. And it can be easily brought into the radio dark room for measuring the electric wave disturbance measurement, and after carrying in, the conductive panels are spread on a single flat plate to form a vertical conducting surface (e.g., 2 m or more in width). The conductive dash surface can be easily electrically connected via conductive means. In this way, by spreading the conductive panels of the radio wave dark water equatorial front partition into one flat plate, it can be used as a vertical conductive surface connected to the conductive ground, and using the vertical conductive surface in the radio darkroom, the ANSI standard It is possible to measure the power conduction disturbance wave which is suitable for.

In the radio dark room, when measuring the radiation noise interference wave, that is, the measurement of the radiation noise electric field strength, it is possible to easily carry out the outside of the radio dark room by folding the conductive panels of the radio wave dark water surface front barrier. After that, by measuring the radiation noise interference wave, it is possible to measure the radiation noise interference wave with the propagation absorption characteristics of the original radio darkroom.

When the L-shaped connecting conductor is fixed to the lower conductive panel under the lower conductive panel among the conductive panels in the vertical conductive surface partition for radio wave darkening, the connecting conductor is screwed to the flat bar attached and fixed to the conductive ground. It can be connected and fixed (connected) reliably with a clamp.

In addition, when the conductive spring contact member is fixed to the lower side of the lower conductive panel among the conductive panels in the vertical conducting surface partition for the radio darkroom, the conductive spring contact member is attached to the flat bar connected and fixed on the conductive ground. By press-contacting, the electrical connection between a conductive panel and a flat bar can be reliably performed.

EMBODIMENT OF THE INVENTION Hereinafter, the Example of the vertical conduction surface partitioner for the radio darkroom which concerns on this invention is described with reference to drawings.

1 to 5 show a first embodiment of a vertical conducting surface partitioner for a radio darkroom according to the present invention. FIG. 1 shows the front of the embodiment, FIG. 2 shows the back thereof, and FIG. 3 shows the right side thereof. FIG. 4 shows the connection state between the conductive panel serving as the vertical conducting surface and the radio wave darkroom bottom surface, and FIG. 5 shows the state in which the conductive panel is folded. In addition, the radio dark room for the measurement of radiation noise field strength and power line disturbance wave into which the vertical conducting surface separator for the radio dark room is carried is covered with the electromagnetic shielding material (metal plate, etc.), and the surface of the electromagnetic shielding material is covered with the electromagnetic wave absorber except for the bottom surface. It becomes the structure covered with.

In these drawings, (1A, 1B) is a sandwich-conductive panel having a 6 mm thick foamed polyurethane as a core material and a metal plate such as an aluminum plate of 0.3 mm mounted on both surfaces thereof. Each of the conductive panels 1A and 1B has a size of 1m in height x 2m in width, and conductive reinforcing materials such as aluminum extruded material of U section for reinforcement are formed on the periphery of the periphery of the conductive panels 1A and 1B. 2) (thickness 1mm) is fixed.

These conductive panels 1A and 1B are arranged up and down side by side so that two sheets become one flat plate, and a vertical conductive surface of 2m in height and 2m in width can be constituted.

As shown in FIG. 2, hinges 3 are provided and connected to the upper and lower joints on the rear surfaces of the conductive panels 1A and 1B, and the two conductive panels 1A and 1B are electrically connected to each other. At the same time, the above conductive panel 1A can be rotated backwards. The hinge 3 can be fixed to the reinforcing members 2 of the conductive panels 1A and 1B with screws or the like, respectively.

The square hollow steel support frame (support frame) 4 for supporting the upper and lower conductive panels 1A and 1B is connected to the center of a pair of leg portions 4a arranged side by side in parallel with FIG. (4b), and a pair of standing portions 4c are placed and fixed to the left and right sides of the leg portion 4a so as to be perpendicular to the radio wave darkroom bottom surface 20. As shown in FIG. 2, the lower panel fixing clamp 15 for fixing the lower conductive panel 1B is integrally provided in the middle part and the lower part of the back part of these entrance part 4c.

The lower conductive panel 1B is fixed to the front of these lower panel fasteners 15 by a screw fastener or the like. That is, the conductive panel IB is attached to the support frame 4 so that the lower panel fixing clamp 15 is the rear side of the conductive panel 1B.

At the upper end of each of the standing portions 4C, screw fixing support hardware 14 for supporting the upper conductive panel 1A perpendicular to the bottom surface is provided, respectively. The female screw member 17 is fixed to the intermediate position of the reinforcing member 2 of the corresponding conductive panel 1A. Then, by screwing the male screw portion 16 of the screw-supported support hardware 14 to the female screw member 17 on the conductive panel 1A side with the conductive panel 1A vertically upright, the conductive panel ( 1A) can be supported in the upright position with the support frame 4, and one flat vertical conductive surface (2m in height and 2m in width) can be formed on the bottom surface by the upper and lower conductive panels 1A and 1B. have.

The casters 5 are respectively fixed to the four corners of the leg portion 4a of the support frame 4 as the rotary moving means (wheels), so that the floor can be easily moved. This caster 5) is preferably equipped with a stopper having a rotation locking function.

Under the front (front) lower portion of the lower conductive panel 1B, as shown in detail in FIG. 4, a connecting conductor plate (L angle) 6 in which a copper plate is formed into an L-shaped cross section as a conductive means is brass. It is fixed with the metal screw 7 and the nut 8, such as these. In the vertical portion of the connecting conductor plate 6, three long loose holes (long holes) 9 are made in the upper and lower portions for the screw, and as shown in FIG. 4, the lower loose holes 9 are formed in the lower portion of the conductive pattern 1B. ), Three mounting holes 10 are formed.

A copper plate 21 having a width of 2 m, a length of 1 m, and a thickness of 2 mm is provided on the radio darkroom bottom surface in a horizontal manner so as to conduct with the electromagnetic shielding material (metal plate, etc.) on the bottom surface, and the upper surface thereof constitutes the conductive ground surface 22. Doing. On the upper surface of the copper plate 21, i.e., the conductive base 27, a flat bar 23 made of copper having a thickness of 6 mm, a width of 50 mm, and a length of 2 m in the lateral direction is provided. The conductive flat bar 23 is installed to traverse in the long direction of the conductive ground surface 22, and is fixed to the copper plate 21 by soldering, welding, or the like so as to electrically conduct with the copper plate 21 forming the conductive ground surface. have.

In the measurement of the electric power conduction disturbance wave, a metal screw 12 such as brass is inserted into the mounting hole 6a formed in the horizontal portion of the connecting conductor plate 6 as shown in FIG. By screwing the screw 12 into the female threaded hole 24, the connection conductor plate 6 can be connected (electrically conductive) to the flat bar 23 and can be fixed.

In the configuration of the first embodiment, when the vertical conducting surface partitioner for the radio darkroom is brought into the radio darkroom, the male screw member 17 of the screw-supporting support 14 is screwed to the conductive panel 1A. ), And the conductive panels 1A and 1B are folded. That is, like the imaginary line in FIG. 3, the upper conductive panel 1A is turned over the conductive panel 1B. In this state, since the height of the vertical conducting surface partitioner for the radio darkroom is low, as shown in FIG. 5, it can be carried easily into the radio darkroom using the carrying in and out of an ordinary radio darkroom. In that case, since the support frame 4 has the caster 5, carrying in operation can be performed smoothly with little operation force.

After inserting the vertical conducting surface partitioner for the polarization darkroom into the radio darkroom, the male screw part of the screw-supporting support body 14 on the supporting frame 4 side with the upper conductive panel 1A vertically upright. 16 is helically coupled to the female screw member 17 on the conductive panel 1A side, and the conductive panel 1A is supported vertically with the support frame 4, and the bottom of the conductive panel 1A, 1B is supported. One flat vertical conducting surface (height 2m, width 2m) is formed perpendicular to the surface. At the same time, the vertical conducting surface diaphragm for the radio darkroom is moved so as to be positioned directly above the flat bar 23 on the bottom side of the dark radio darkroom of the connection conductor plate (L angle) 6 attached to the conductive panel 1B below. Loosen the screw (7) and the nut (8) tightly once, and use the loose hole (9) of the connecting conductor plate (6) to flatten the bottom surface of the connecting conductor plate (6) with the flat bar (23). Tightly) In this state, as shown in FIG. 4, the screw 12 is spirally attached to the female threaded holes 24 of the flat bar 23 at the same time, and the screw 7 and the nut 8 are tightened firmly to connect the connecting conductor plate. (6) electrically and mechanically connects the flat bar 23 and the conductive panel 1B, which are connected and fixed on the conductive ground surface 22. As a result, the vertical conductive surfaces connected (conducted) to the conductive ground surface 22 conductive to the electromagnetic shielding material on the bottom surface of the radio wave darkroom can be constituted by the upper and lower conductive panels 1A and 1B, and the vertical conductive surfaces are used. In this way, it is possible to measure a power conduction disturbance wave conforming to the ANSI standard in a radio darkroom.

In the radio dark room, when performing the measurement of the radiation noise interference wave, that is, the measurement of the radiation noise electric field strength, the male threaded portion 16 of the screw-type supporting hardware 14 on the support frame 4 side is placed on the conductive panel 1A side. It can be easily taken out from the radio darkroom by releasing it from the female screw member 17 and folding the conductive panels 1A and 1B of the vertical conducting surface partitioner for the radio darkroom together with the virtual line of FIG. 3 and lowering the height as shown in FIG. Therefore, no yarn affects the radio wave absorption characteristics of the radio darkroom during the measurement of radiation noise interference waves.

According to this first embodiment, the following effects can be obtained.

(1) Since the vertical conductive surfaces are composed of two upper and lower conductive panels 1A and 1B, and they are freely installed with respect to the support frame 4, the conductive panels 1A and 1B are folded to raise the height. In a low state, it can be carried easily into the radio dark room for radiating noise development intensity and power line disturbance wave measurement, and can be easily carried out from the radio dark room. Therefore, the carry-out and exit of the radio darkroom need only be normal dimensions, and do not require a special opening dimension. Moreover, a special space for storing the vertical conducting surface partitions for the electric darkroom is unnecessary, and it can be easily installed in the currently operating radio dark room. . In addition, the conductive panels 1A and 1B can be folded and stored outside the radio darkroom, and are easily stored.

(2) The vertical conduction screen for radio darkroom is brought into the radio darkroom, and the upper and lower conductive panels 1A and 1B are developed in a single flat plate to form a vertical conducting surface of 2 m in height and 2 m in width. The entire surface can be easily electrically connected to the conductive flat bar 23 on the conductive ground surface 22 on the radio darkroom bottom side via the connecting conductor plate 6 serving as a conductive means. The connection of the connection conductor pipe 6 to the flat bar 23 at that time can be easily performed by the screw 12. Therefore, a vertical conduction surface can be formed in the radio darkroom in a short time, and the power conduction disturbance wave which conforms to the ANSI standard can be measured in the radio darkroom using the vertical conduction surface.

(3) When performing the measurement of the radiation noise field strength in the radio dark room, the vertical conducting surface shield for the radio dark room must be carried out of the radio dark room, but from the flat bar 23 of the contact conductor plate 6 at that time. Detaching can be performed easily by loosening the screw 17, and furthermore, by folding the conductive panels 1A and 1B, it can be easily taken out of the radio wave chamber. Then, after the vertical conducting surface partitioner for the radio darkroom is taken out of the radio dark room, the radiation noise interference wave is measured, whereby the radiation noise interference wave can be measured by the radio wave absorption original characteristic of the radio dark room.

(4) Since the conductive panels 1A and 1B for constituting the vertical conducting surface have a foamed polyurethane having a thickness of 6 mm as a core material and a sandwich structure in which metal plates such as aluminum plates of 0.3 mm are mounted on both surfaces, Compared with the case where the conductive panel is composed of only one sheet of metal, the stability in the vertical direction can be improved (it is hard to bend or bent), the weight can be reduced, and the handling is convenient.

(5) Since the support frame 4 supporting the conductive panels 1A and 1B is provided with a caster 5 in the lower portion as the rotary moving means, the vertical conducting surface partitions for the radio darkroom can be moved smoothly with a small operating force. You can.

6 shows the main part configuration of the second embodiment of the vertical conducting surface partition for the radio darkroom according to the present invention. In this second embodiment, the conductive panel 1A, 1B, which forms the vertical conductive surface, is connected to the conductive ground surface 22, which conducts with the electromagnetic shielding material of the radio dark room, and is electrically conductive. A cross-sectional L-shaped connecting conductor (L angle) 6 attached to the lower portion of the lower portion and a conductive spring-like contact member 30 which can be press-contacted to the conductive flat bar 23 connected and fixed on the conductive ground surface are used. . This conductive spring-like contact member 30 is bow-shaped in order to have elasticity with beryllium copper or the like, and has only a connecting conductor 6 with a screw 31 and a nut 32 at one edge portion. It is fixed to the underside of

The other components are the same as in the first embodiment described above, and the same or corresponding parts are denoted by the same reference numerals, and description thereof is omitted.

According to this second embodiment, the conductive panels 1A and 1B at the top and bottom of the vertical conducting surface partition for the radio darkroom carried in the radio darkroom constitute one flat vertical conducting surface (2m in height and 2m in width) perpendicular to the floor surface. At the same time, when the horizontal portion of the connecting conductor plate (L angle) 6 attached to the lower conductive panel 1B is positioned directly above the flat bar 23 on the bottom side of the radio wave chamber, the connecting conductor plate ( Since the conductive spring-like contact member 30 mounted on the lower surface of 6) is press-contacted to the conductive flat bar 23, the vertical conductive surface can be automatically connected to and conductive with the conductive ground surface 22. For this reason, the vertical conducting surface and the conductive ground between the vertical conducting surface and the conductive ground accompanying the movement of the vertical conducting surface separator for the radio darkroom can be further simplified, and the vertical conducting surface for the dark radio wave chamber is shorter than in the first embodiment. It is possible to carry in and out of the partition. The effects of other operations are the same as in the first embodiment described above.

In each of the above-described embodiments, the conductive panels 1A and 1B are constructed in which aluminum plates and the like are mounted on both sides of the core material of the polyurethane foam. However, copper, brass, A metal plate member such as iron may be attached, or a metal plated film may be formed in plastic. The core material may be a material other than foamed polyurethane as long as the material is light and has good strength.

Although the connection conductor plate 6, the conductive ground surface 22, and the flat bar 23 illustrate the case of copper, metals, such as brass and iron (metal plating for rust prevention), may be sufficient. The conductive spring-like contact member 30 may also employ an elastic metal material other than beryllium copper.

In the folding directions of the conductive panels 1A and 1B in each embodiment, the upper conductive panel 1A is caused to fall on the back side of the lower conductive panel 1B. The panel 1A may be collapsed to the front of the conductive panel 1B.

In addition, in order to hold the upper conductive panel 1A in a vertical position, the screw fixing support hardware 14 is spirally coupled to the panel side female screw member 17, but the locking pin is provided on the support hardware, and the locking pin is provided on the panel side. It may be coupled to the hole.

Further, three or more conductive panels may be folded and connected freely to form a vertical conductive surface.

Although the embodiments of the present invention have been described above, it will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims without being limited thereto.

As described above, according to the vertical conducting surface partitioner for the radio darkroom of the present invention, a plurality of conductive panels are folded and installed freely on a support frame having rotary moving means, and the conductive panel is provided on the radio darkroom bottom surface side. Since conductive means that can be connected to or detached from the conductive ground of the substrate are provided, the conductive panels can be easily and smoothly brought into the radio darkroom with a small operating force in the folded state. It is developed as a single flat plate so as to constitute, and can be easily electrically connected to the conductive ground on the bottom side of the radio darkroom floor through conductive means. Therefore, it is possible to measure power propagation disturbances in compliance with the ANSI standard in the radio dark room for radiation noise disturbance measurement using the vertical conduction surface, and separately install an electromagnetic shielding chamber exclusively for electric wave propagation interference measurement. There is no.

When conducting measurements of radio noise interference in the radio dark room, by folding several conductive panels of the vertical conducting surface partitioner for the radio dark room, it can be easily and smoothly taken out of the radio dark room. The measurement of power disturbance wave and the measurement of radiation noise interference wave can be easily and easily performed in a short time.

In addition, since the vertical conducting surface is a structure in which a plurality of conductive panels are folded, the entrance and exit of the radio darkroom has a normal dimension, does not require a special opening dimension, and also a special space for storing a vertical conducting surface partition for a radio darkroom. It is unnecessary and can install the radio wave room which is currently operating easily.

Claims (3)

A plurality of conductive panels 1A and 1B are folded and installed freely on the support frame 4 having the rotary moving means at the bottom, and the conductive panels 1A and 1B are provided on the radio wave chamber bottom surface 20. A vertical conducting surface diaphragm for a radio darkroom, characterized by providing conductive means that can be connected to or detached from the conductive ground surface 22 on the side. 2. The connecting conductor (6) according to claim 1, wherein the conductive means has a cross-sectional L-shaped connecting conductor (6) connectable to the conductive flat bar (23) which is connected and fixed on the conductive ground surface (22). Is a vertical conducting surface diaphragm for a radio darkroom fixed to a lower portion of a lower conductive panel among the plurality of conductive panels 1A and 1B. 2. The conductive spring contact member according to claim 1, wherein the conductive means has a conductive spring contact member (30) which can be press-contacted to the conductive flat bar (23) connected and secured on the conductive ground surface (22). 30 is a vertical conducting surface membrane for a radio darkroom fixed to the lower side of the lower conductive panel of the plurality of conductive panels 1A and 1B.