JP2004335818A - Electromagnetic wave shield box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure a visibility and an air permeability of an accomodating equipment and to surely demonstarte a function for shielding an electromagnetic wave without increasing the type of component. <P>SOLUTION: A plurality of conductive supporting columns 12 are erected on a conductive base plate, and a plurality of conductive crosspieces are hung between the columns to compose a skeleton structure 14. A conductive door 16 releasably shuts an opening part 14a for the door out of the opening part of a periphery surface of the bone structure, a conductive wall member 17 shuts an opening part 14b of a periphery surface of the bone structure except an opening part for the door, and a conductive ceiling member shuts an opening part of an upper surface of the bone structure. The door has a frame 16a for the conductive door, and a net 16b for the conductive door with its periphery edge fixed to the frame for the door. The wall member has a frame 17a for the conductive wall and a net 17b for the conductive wall with its periphery edge fixed to the frame for the wall. The ceiling member has a frame for the conductive ceiling and a net for the conductive ceiling with its periphery edge fixed to the frame for the ceiling. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a box for shielding electromagnetic waves. More specifically, the present invention relates to a box used to prevent intrusion of electromagnetic waves that have an adverse effect on measurement equipment or inspection equipment, or to prevent leakage of electromagnetic waves generated by measurement equipment or inspection equipment. is there.
[0002]
[Prior art]
Conventionally, an upper shield adapter is mounted on the upper surface of the housing to be mounted, a lower shield adapter is mounted on the lower portion of the housing to be mounted, and the upper cover is electrically connected to the upper shield adapter so that the upper cover covers the upper surface of the housing to be mounted. An electromagnetic shield device is disclosed that is attached in a connected state, and is attached to the upper shield adapter and the lower shield adapter in a state where the pair of side covers are electrically connected so as to cover the pair of side surfaces of the housing to be attached. (For example, see Patent Document 1). In this electromagnetic shield device, the front door is attached to the upper shield adapter so as to be openable and closable in a state of being electrically connected so as to cover the front of the housing to be mounted, and the rear door is attached to the lower shield adapter by the rear surface of the housing to be mounted. It is mounted to be openable and closable in a state of being electrically connected so as to cover it. Further, the bottom cover is attached to the adapter or the lower part of the housing to be mounted in a state of being electrically connected thereto, and the upper cover or the bottom cover is formed so as to be able to introduce the introduction cable of the housing to be mounted.
[0003]
In the electromagnetic shield device configured as described above, the outer peripheral surface of the attached casing is covered with the door and the cover which are electrically connected to each other directly or via the casing. An advanced shielding effect can be given to a certain electronic device. That is, it has a sufficient electromagnetic shielding effect against unnecessary electromagnetic waves radiated by the electronic device and external electromagnetic waves arriving at the electronic device. In addition, the electromagnetic shield device can be easily attached to the electronic device in operation, and the effect is that the maintainability after the attachment is good and the appearance is excellent.
[0004]
[Patent Document 1]
JP-A-7-131177
[0005]
[Problems to be solved by the invention]
However, in the electromagnetic shielding device disclosed in Patent Document 1, although the front door, the rear door, and the top cover are formed of expanded metal or the like that allows the inside to be visually recognized and has air permeability, the side cover covers the inside. Since it is made of a metal panel that is not visible and has no air permeability, there is a problem that the visibility and air permeability of the internal electronic device cannot be sufficiently ensured.
Further, in the electromagnetic shield device disclosed in Patent Document 1, an adapter must be attached to a mounting case, and when the shape of the mounting case changes, the shape of the adapter also matches the shape of the case. Therefore, it is necessary to manufacture an adapter for each type of housing, and there is a problem that the number of types of components increases.
Further, in the electromagnetic shield device disclosed in Patent Document 1, the side cover is attached from the outside of the housing to be mounted, and the top cover is attached from above the housing to be mounted. There is a problem in that the workability of assembling the side cover and the top cover becomes difficult when the apparatus is installed close to the front cover.
[0006]
A first object of the present invention is to provide an electromagnetic wave shielding box capable of sufficiently securing the visibility and air permeability of a housing device and reliably exhibiting a function of shielding electromagnetic waves without increasing the number of types of components. It is in.
A second object of the present invention is to provide an electromagnetic wave shielding box that can be easily installed even when the installation place is close to a wall or a ceiling.
A third object of the present invention is to provide an electromagnetic wave shielding box that can further reduce the types of components by using a wall member and a ceiling member, or a conductive frame of the same shape and size as a door in addition to these members. It is in.
A fourth object of the present invention is to provide an electromagnetic shielding box that can be assembled relatively easily without impairing the appearance of the conductive frame and that can securely and easily fix the net to the conductive frame. is there.
A fifth object of the present invention is to make it possible to easily connect pillars and crossbars, to build a robust skeleton, and to cool with a relatively simple structure while securing electrical connection between a base plate and the like and a metal porous member. An object of the present invention is to provide an electromagnetic wave shielding box capable of introducing air.
[0007]
[Means for Solving the Problems]
As shown in FIGS. 1, 2 and 7, the invention according to claim 1 comprises three or more conductive columns 12 erected on a conductive base plate 11, Three or more bars 13 erected between the columns 12 and constituting a skeleton together with the columns 12, and a door opening 14a which is conductive and has an opening on the peripheral surface of the skeleton 14 is openably closed. A door member 16, a wall member 17 having conductivity and closing an opening 14 b on the peripheral surface of the skeleton 14 excluding the door opening 14 a, and a ceiling member 18 having conductivity and closing an opening 14 c on the upper surface of the skeleton 14. It is an improvement of the electromagnetic wave shielding box provided with:
The characteristic configuration is that the door 16 has a door frame 16a formed of a conductive member in a frame shape, and a door net 16b formed of a conductive wire and having a periphery fixed to the door frame 16a. A wall member 17 having a wall frame 17a formed in a frame shape from a conductive strip and a wall net 17b formed of a conductive wire and having a peripheral edge fixed to the wall frame 17a; Reference numeral 18 is a portion having a ceiling frame 18a formed in a frame shape from a conductive strip material, and a ceiling net 18b formed of a conductive wire and having a periphery fixed to the ceiling frame 18a.
[0008]
In the electromagnetic wave shielding box according to the first aspect, the state of the housing device 19 in the box 10 can be visually recognized from at least three sides through the wall net 17b and the door net 16b, and even if the amount of heat generated by the housing device 19 is large. The heat can be dissipated through the ceiling net 18b, the wall net 17b, and the door net 16b, which have extremely good air permeability. Further, since the wall members 17 and the like are attached to the skeleton 14 formed by assembling the columns 12 and the bars 13, the spacing between the columns 12 is kept constant. By simply increasing or decreasing the number of columns 12 and bars 13 without changing the shape of the bar 13, that is, by simply increasing or decreasing the number of components with almost no increase in the type of components, the function of shielding electromagnetic waves is reliably exhibited. it can.
[0009]
The invention according to claim 2 is the invention according to claim 1, and furthermore, as shown in FIGS. 1 and 2, the wall frame 17 a and the ceiling frame 18 a have the same shape and the same size or a plurality of conductive frames. The conductive frames 32 are fixed to the nets 17b and 18b.
In the electromagnetic wave shielding box according to the second aspect, the wall frame 17a and the ceiling frame 18a are formed by using one or two or more conductive frames 32 of the same shape and the same size, for example, a square conductive frame 32. By doing so, the types of frames can be reduced.
[0010]
The invention according to claim 3 is the invention according to claim 1, wherein the door frame 66 is formed by a conductive member into a shape corresponding to the door opening 14a as shown in FIG. A door frame 67 pivotally attached to one of the columns 52 forming the opening 14a and detachably abutting against the other column 52; and a frame-shaped frame made of a conductive strip material, which can be removed from the door frame 67. , And a door net 66a is fixed to the conductive frame 32.
In the electromagnetic wave shielding box according to the third aspect, the door frame 67 is formed by using two or more conductive frames 32 of the same shape and the same size, for example, square conductive frames 32. Can be shared with the wall frame 17a and the ceiling frame.
[0011]
The invention according to claim 4 is the invention according to claim 1 or 2, wherein the wall frame 17a and the ceiling frame 18a are provided with the support columns 12 and 13 is removably attached to the device.
In the electromagnetic wave shielding box according to the fourth aspect, the door opening 14a among the openings on the peripheral surface of the skeleton 14 is closed by the door 16 from inside the box 10, and the door opening among the openings on the peripheral surface of the skeleton 14. Since the opening 14b other than 14a is closed by the wall member 17 from inside the box 10, and the opening 14c on the upper surface of the skeleton 14 is closed by the ceiling member 18 from inside the box 10, the installation location of the box 10 approaches the wall or ceiling of the room. Even in the state, it can be easily installed.
[0012]
The invention according to claim 5 is the invention according to claim 2 or 3, wherein the conductive frame 32 has a first concave groove 32b extending in the longitudinal direction, as shown in FIGS. Are trapezoidal strip members 32a cut obliquely at 45 degrees, and one strip is inserted into the first concave groove 32b at one end of the strip plate member 32a, and the other strip is adjacent to the strip plate member 32a. An L-shaped frame connector 32c is inserted into the first concave groove 32b of the member 32a and connects the band plate members 32a in a rectangular frame shape.
In the electromagnetic wave shielding box according to the fifth aspect, the conductive frame 32 can be relatively easily assembled without deteriorating the appearance of the conductive frame 32.
[0013]
The invention according to claim 6 is the invention according to claim 5, and further has a ring-shaped second concave groove 32d formed along the longitudinal direction of the conductive frame 32 as shown in FIGS. The meshes 17b and 18b are fixed to the conductive frame 32 by inserting the peripheral edges of the meshes 17b and 18b into the second groove 32d and further inserting a string-like elastic member 32e.
In the electromagnetic wave shielding box according to the sixth aspect, even if the nets 17b, 18b using a relatively thin and flexible conductive wire are used, the nets 17b, 18b are reliably and securely attached to the conductive frame 32. It can be fixed very easily.
[0014]
The invention according to claim 7 is the invention according to claim 5, and further includes, as shown in FIGS. 16 to 18, a portion of the first groove 32 b of the conductive frame 32 in which the frame connector 32 c is inserted. The conductive frame 32 is further provided with a flat bar 41 that is inserted into the conductive frame 32 by inserting the peripheral edges of the nets 47b and 48b into the first groove 32b and further inserting the frame connecting tool 32c and the flat bar 41. The nets 47b and 48b are fixed.
In the electromagnetic wave shielding box according to the seventh aspect, even if the nets 47b and 48b using a relatively thick and inflexible conductive wire are used, the nets 47b and 48b are reliably and securely attached to the conductive frame 32. Can be fixed relatively easily.
[0015]
The invention according to claim 8 is the invention according to claim 1, and furthermore, as shown in FIGS. 10 to 15, the column 12 and the bar 13, and the bar 13 and the bar 13 can be detached by the frame connecting tool 29. It is characterized by being connected to.
In the electromagnetic wave shielding box according to the eighth aspect, the columns 12 and the bars 13 can be connected relatively easily, and the robust skeleton 14 can be constructed.
[0016]
The invention according to claim 9 is the invention according to claim 1, further comprising a through hole 11a for flowing cooling air through the base plate 11, the ceiling plate or the wall member, as shown in FIGS. A metal porous member 22 having a shape corresponding to the through hole is formed and inserted into the through hole 11a, and the lower peripheral edge of the through hole 11a of the base plate 11, the ceiling plate or the wall member and the lower peripheral edge of the metallic porous member 22 are formed. It is characterized by being electrically connected by the conductive sheet 24.
In the electromagnetic wave shielding box according to the ninth aspect, the cooling air can be quickly introduced into the box 10, and the base plate 11, the ceiling plate or the wall member, and the metal porous member 22 can be electrically connected with a relatively simple structure. Can be connected to
The metal porous member 22 is preferably a punched metal or a metal honeycomb structure.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, a first embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1 to FIG. 3 and FIG. 7, the electromagnetic wave shielding box 10 includes four conductive and same-sized columns 12 having the same conductivity and standing on a conductive base plate 11. And a total of eight same-sized and same-sized crosspieces 13 each of which is provided between the columns 12 and constitutes a skeleton 14 together with the columns 12, four upper and lower sides, and an opening on the peripheral surface of the skeleton 14 having conductivity. A single door 16 for removably closing the door opening 14a, three wall members 17 having conductivity and closing the opening 14b on the peripheral surface of the skeleton 14 excluding the door opening 14a; And one ceiling member 18 which has the property and closes the opening 14 c on the upper surface of the skeleton 14. The base plate 11 is formed of a stainless steel plate or a plated steel plate having a thickness of 1.5 to 3.0 mm (FIG. 7), and the columns 12 and the bars 13 are formed by extrusion or drawing of aluminum alloy, steel, stainless steel, or the like. (FIGS. 1 to 3). In this embodiment, a device 19 (FIG. 2, FIG. 3, and FIG. 7) housed in the electromagnetic wave shielding box 10 is a server computer installed in a computer room. A computer that sends it to the world through the Internet). In addition, as the accommodation equipment, in addition to the server computer installed in the computer room, a computer installed in a conference room or another room, a measurement equipment, an inspection equipment, and the like are included. The place where the electromagnetic wave shield box is known may be installed in an inspection room such as a hospital, a shield room for simple experiments, or an inspection line in a factory, instead of the computer room.
[0018]
As shown in FIGS. 7 to 9, the base plate 11 is formed in a square shape, and is laid on a grating 21 provided at a predetermined distance from the concrete floor 20 and provided above. In the center of the base plate 11, a square through hole 11a for flowing cooling air is formed. A metal porous member 22 having a square shape corresponding to the through hole and having a large number of holes 22a formed at predetermined intervals is inserted into the through hole 11a. In this embodiment, a punching metal is inserted. The punching metal 22 is formed of a stainless steel plate or a plated steel plate having a thickness of 1.5 to 3.0 mm. As the metal porous member, a metal honeycomb structure may be used in addition to the punched metal.
[0019]
A plywood 23 having the same outer shape as the base plate 11 and having electrical insulation is interposed between the grating 21 and the base plate 11 (FIGS. 7 to 9). At the center of the plywood 23, a first square through hole 23a, which is slightly smaller than the through hole 11a, is formed so as to face the through hole 11a (FIGS. 8 and 9). A flexible rectangular frame-shaped conductive sheet 24 is placed on the upper surface of the periphery of the first through hole 23a of the plywood 23, and the lower surface of the periphery of the through hole 11a of the base plate 11 and the punching metal are placed on the conductive sheet 24. 22 is configured so that the lower surface of the peripheral edge thereof rests (FIG. 8). Further, the grating 21 is formed with a second square through hole 21a facing the first through hole 23a of the plywood 23, and a duct 26 for introducing cooling air into the box 10 is formed in the second through hole 21a. Is inserted (FIGS. 7 and 8). The through hole for inserting the metal porous member may be formed in the ceiling member or the wall member instead of the base plate.
[0020]
On the other hand, the column 12 and the bar 13 are formed by extrusion or drawing of an aluminum alloy, steel, stainless steel, or the like, and the cross-sectional shape of the column 12 and the cross-section of the bar 13 are formed to be the same (FIGS. 10 to 15). . In addition, in this embodiment, the length of the column 12 is formed to be approximately twice the length of the bar 13 (FIGS. 2 and 3). For example, assuming that the length of the bar 13 is about 1 m, the length of the column 12 is formed to be about 2 m. The support 12 is formed in a shape obtained by cutting one corner of a square tube into a substantially W shape (FIGS. 10 to 15). A pair of first support T-grooves 12a, 12a extending in the longitudinal direction of the support 12 are respectively formed in the pair of connecting tool mounting surfaces 12c, 12c remaining uncut among the pair of surfaces forming the corner. You.
[0021]
A pair of frame mounting surfaces 12d, 12d which are substantially W-shaped surfaces and are adjacent to the surfaces on which the pair of first column T-grooves 12a, 12a are formed, have a longitudinal direction of the column 12. A pair of extending second support T-grooves 12b, 12b are formed, respectively. The crosspiece 13 has a shape in which one corner of a square tube is cut into a substantially W-shape and has a pair of connecting member mounting surfaces 13c, 13c and a pair of frame mounting surfaces 13d, 13d, similarly to the above-mentioned support column 12. A pair of first crosspiece T-grooves 13a, 13a having the same shape as the pair of first strut T-grooves 12a, 12a are formed on a pair of coupling fixture mounting surfaces 13c, 13c, respectively, to form a pair of second support T-grooves. A pair of second cross T-shaped grooves 13b, 13b having the same shape as the T-shaped grooves 12b, 12b are formed on the pair of frame mounting surfaces 13d, 13d, respectively. A hexagonal nut 27 having a relatively large nominal diameter is slidably inserted into the first support T-groove 12a and the first support T-groove 12b (FIGS. 12 and 14). The head of a hexagonal bolt 28 having a relatively small nominal diameter is slidably inserted into the two-bar T-groove 13b (FIG. 1).
[0022]
The support 12 and the crosspiece 13 include a first support T-groove 12a, a first support T-groove 13a, a substantially L-shaped framing connector 29, a first support T-groove 12a and a first support T-groove. A hexagonal nut 27 having a relatively large nominal diameter, which is slidably inserted into the groove 13a, and a hexagon socket head cap screw 30 which is screwed to the nut 27, are releasably connected to each other (FIG. 12 and FIG. 14). The skeleton connecting member 29 is formed by aluminum die casting, or is formed by extruding or drawing an aluminum alloy and cutting it to a predetermined width. Further, a pair of insertion holes 29a, 29a for inserting the screw portions of the hexagon socket head cap bolts 30 having a relatively large nominal diameter are formed at both ends of the frame connecting tool 29, respectively. Further, the crosspiece 13 and the crosspiece 13 are relatively large in nominal diameter that are slidably inserted into the first crosspiece T-groove 13a, the substantially L-shaped skeleton connecting tool 29, and the first crosspiece T-groove 13a. The hex nut 27 and the hex nut 30 screwed to the nut 27 are detachably connected to each other (FIGS. 13 and 15). A hexagon nut 31 having a relatively small nominal diameter is screwed into the hexagon bolt 28 having a relatively small nominal diameter (FIG. 1).
[0023]
On the other hand, the wall member 17 has a wall frame 17a formed of a conductive strip material in a frame shape, and a wall net 17b formed of a conductive wire and having a peripheral edge fixed to the wall frame 17a (FIG. 1). ~ Figure 3). The ceiling member 18 has a ceiling frame 18a formed of a conductive strip material in a frame shape, and a ceiling net 18b formed of a conductive wire and having a periphery fixed to the ceiling frame 18a (FIGS. 2 and 3). (Fig. 3). The wall frame 17a and the ceiling frame 18a are constituted by single or plural conductive frames 32 of the same shape and the same size, and the nets 17b and 18b are fixed to each conductive frame 32 (FIGS. 2 to 4). . That is, the wall frame 17a is constituted by two conductive frames 32, and the wall nets 17b, 17b are fixed to the conductive frames 32, 32, respectively. The ceiling frame 18 is formed of a single conductive frame 32, and the ceiling net 18b is fixed to the conductive frame 32. The wall net 17b and the ceiling net 18b are formed using a relatively thin and flexible conductive wire.
[0024]
As shown in FIGS. 4 to 6, the conductive frame 32 has four first grooves 32b extending in the longitudinal direction, both ends of which are cut at an oblique angle of 45 degrees, and having approximately the same length as the crosspiece 13. And one piece is inserted into the first groove 32b of one end of the strip member 32a, and the other piece is inserted into the first groove 32b of the strip member 32a adjacent to the strip member 32a. An L-shaped frame connecting member 32c for connecting these band plate members 32a in a square frame shape, and a flathead screw 32f inserted into the frame connecting member 32c and screwed to the band plate member 32a. . When the four strip members 32a are connected to each other using the frame connector 32c and the flathead screw 32f, the first groove 32b is configured to be continuous in a ring shape. In the conductive frame 32, a ring-shaped second groove 32d is formed on the same surface as the surface on which the first groove 32b is formed and inside the first groove 32b. The peripheral edges of the nets 17b and 18b and the string-like elastic member 32e can be inserted into the second concave groove 32d.
[0025]
The strip member 32a is formed by extrusion or drawing of an aluminum alloy, steel, stainless steel, or the like, and the frame connector 32c is formed by aluminum die casting. The conductive frame 32 is detachably attached to the support 12 and the crosspiece 13 from the inside of the skeleton 14, that is, from inside the box 10. Further, a conductive plate 33 made of an aluminum alloy plate, a stainless steel plate or the like is fixed to a lower portion of the rear opening 14b opposite to the door opening 14a (FIG. 3). A filter case 33a containing a power supply filter and a signal line filter is mounted on the outer surface of the conductive plate 33, and a power supply cable 33b and a signal cable 33c are connected to the power supply filter and the signal line filter in the filter case 33a, respectively. After that, it is connected to the server computer 19 through the conductive plate 33.
[0026]
1 and 2, the door 16 includes a door frame 16a formed of a conductive member in a frame shape, and a door net 16b formed of a conductive wire and having a peripheral edge fixed to the door frame 16a. Having. The door frame 16a includes two vertical door members 16c each having a door T-groove 16e extending in the longitudinal direction, having both ends cut obliquely at 45 degrees, and having a length slightly shorter than the column 12, and extending in the longitudinal direction. Two horizontal door members 16d each having a T-slot 16e for a door, both ends of which are cut obliquely at 45 degrees and having a length slightly shorter than the bar 13, and a vertical door member 16c and a horizontal door member 16d which are framed. And an L-shaped door connector (not shown) that is connected in a shape. The vertical door member 16c and the horizontal door member 16d are formed by extrusion or drawing of an aluminum alloy, steel, stainless steel, or the like, and the door coupler is formed by aluminum die casting.
[0027]
The vertical door member 16c and the horizontal door member 16d constituting the door frame 16a have the same cross-sectional shape, and are formed smaller than the cross-sectional shapes of the support 12 and the crosspiece 13. The door T-groove 16e is formed in the same manner as the first support T-groove 12a and the first rail T-groove 13a, and the door connector is formed in the same manner as the skeleton connector 29. When the two vertical door members 16c, 16c and the two horizontal door members 16d, 16d are connected by a door connector, the door T-groove 16e is formed on the inner peripheral surface of the door frame 16a. It is configured to be continuous in a ring shape. Further, the door frame 16a is formed with a ring-shaped door groove 16f which is adjacent to the surface on which the door T-groove 16e is formed and which faces the inside of the box 10. Is configured such that the peripheral edge of the door net 16b and a string-like door elastic member 16g can be inserted. The door groove 16f is formed in the same shape as the second groove 32d of the conductive frame 32, and the door elastic member 16g is formed of the same material and the same thickness as the elastic member 32e of the conductive frame 32. .
[0028]
In addition, reference numeral 16h in FIG. 2 denotes a door bar installed in the center of the pair of vertical door members 16c, 16c, and reference numeral 16i denotes a handle. Reference numeral 34 in FIG. 1 denotes a hinge for attaching the door 16 to the support 12, and reference numeral 36 denotes a tapping screw for attaching the hinge 34 to the support 12 and the door 16. Reference numeral 37 denotes a flexible conductive packing for bringing the door frame 16a into close contact with the support 12 and the crosspiece 13 when the door 16 is closed.
[0029]
The procedure for assembling the electromagnetic wave shielding box 10 thus configured will be described.
The hexagon socket head bolts 30 are inserted into the insertion holes 29a of the 24 skeleton couplers 29 in advance, and the hexagon nuts 27 are lightly screwed into the ends of these bolts 30, respectively, and temporarily assembled. Also, six conductive frames 32 are manufactured using the band plate member 32a, the frame connector 32c, and the flathead screw 32f, and the nets 17b and 18b are fixed to these conductive frames 32, respectively (FIGS. 6). At this time, one piece of the frame connector 32c is inserted into the first concave groove 32b of the trapezoidal strip member 32a of the conductive frame 32, and the other piece of the frame connector 32c is inserted into the strip adjacent to the strip member 32a. Since the strip member 32a is inserted into the first concave groove 32b of the plate member 32a and connected to the rectangular frame shape, the conductive frame 32 can be relatively easily assembled without impairing the appearance of the conductive frame 32. it can. Further, since the string-shaped elastic member 32e is inserted after the peripheral edges of the nets 17b and 18b are inserted into the second concave grooves 32d of the electroconductive frame 32, the net using a relatively thin and flexible conductive wire is used. 17b and 18b, the nets 17b and 18b can be fixed to the conductive frame 32 reliably and very easily. Further, a single door frame 16a is manufactured using the vertical door member 16c, the horizontal door member 16d, the door connector, and the door rail 16h, and the door net 16b is fixed to the door frame 16a ( 1 and 2). Note that a conductive packing 37 is bonded to the door frame 16a so as to face the column 12 and the bar 13 forming the door opening 14a.
[0030]
First, the plywood 23 is placed on the grating 21 in which one end of the duct 26 is inserted so that the first through hole 23a coincides with the second through hole 21a, and then the conductive sheet 24 is placed on the peripheral top surface of the first through hole 23a. (FIGS. 7 to 9). In this state, the base plate 11 is placed on the plywood 23 with the center of the through hole 11a coincident with the center of the first through hole 23a, and then the punching metal 22 is inserted into the through hole 11a. At this time, since the lower peripheral edge of the through hole 11a of the base plate 11 and the lower peripheral edge of the punching metal 22 are placed on the conductive sheet 24, the base plate 11 and the punching metal 22 are electrically connected by the conductive sheet 24. . As a result, the electromagnetic wave shielding function of the box 10 is not impaired.
[0031]
Next, four bars 13 are placed on the base plate 11 so as to form a square frame. In this state, one of the pair of hexagon nuts 27, 27 temporarily assembled to the skeleton coupler 29 is inserted into the first T-shaped groove 13a of the crosspiece 13, and the other hexagon nut 27 is inserted into the crosspiece. 13 is inserted into the T-bar 13a of the first crosspiece of the crosspiece adjacent to 13 and the hexagon socket head cap screw 30 temporarily assembled to the skeleton coupling tool 29 is tightened (FIGS. 10 and 13). Thus, one square corner formed by the four bars 13 is connected by the skeleton connecting tool 29. Similarly, the other three corner portions of the square formed by the four crosspieces 13 are connected by the skeleton connecting tool 29. The heads of the hexagon bolts 28 are inserted into the second T-bars 13b of the bars 13 before connection, respectively.
[0032]
Next, the support column 12 is erected on the base plate 11 so that the support column 12 is located at one corner of the square formed by the four bars 13. In this state, one of the pair of hexagon nuts 27, 27 temporarily assembled to the skeleton connecting member 29 is inserted into the first T-shaped groove 13a of the bar 13 and the other hexagon nut 27 is connected to the column 12 And the hexagon socket head cap bolt 30 temporarily assembled to the skeleton connecting member 29 is tightened (FIGS. 10 and 12). Further, one of the hex nuts 27, 27 temporarily assembled to another skeleton connecting tool 29 is inserted into the first T-shaped groove 13a of the beam 13 adjacent to the beam 13, and the other is inserted. The hexagon nut 27 is inserted into the other first support T-groove 12 a of the support 12, and the hexagon socket head cap screw 30 temporarily assembled to the skeleton connector 29 is tightened. As a result, the column 12 is fixed to one square portion formed by the four crosspieces 13 in a state of being erected by the two skeleton connecting tools 29 (FIGS. 2, 3, and 10). Similarly, three pillars 12 are erected at the other three corners of the square formed by the four bars 13, and these pillars 12 are fixed in a state of being erected by the skeletal coupler 29. I do.
[0033]
In this state, the heads of the hexagonal bolts 28 are inserted into each of the second support T-grooves 12b of the four supports 12 by four. Then, similarly to the above, the bar 13 is erected and fixed between the upper ends of the adjacent columns 12 by using the skeleton connecting member 29 (FIGS. 11, 14 and 15). Thereby, four square frame-shaped bars 13 are fixed to the upper ends of the four columns 12 (FIGS. 2, 3, and 11). The heads of the hexagonal bolts 28 are inserted into the second T-bars 13b of the bars 13 before the bridges are installed. In this way, by connecting the support 12 and the crosspiece 13 and the crosspiece 13 and the crosspiece 13 so as to be detachable by the frame connecting tool 29, the support 12 and the crosspiece 13 can be connected relatively easily, and the robust skeleton 14 is constructed. it can.
[0034]
Next, a conductive frame 32 is attached from the inside of the skeleton 14 to the opening 14b on the peripheral surface of the skeleton 14 excluding the opening 14a for the door and the opening 14b at the lower back, and these openings 14a and 14b are provided with a net 17b. With the conductive frame 32 of FIG. At this time, the conductive frame 32 is fixed by the hexagonal bolts 28 whose heads are inserted into the second support T-grooves 12b and the second rail T-grooves 13b and the hexagonal nuts 31 screwed to these. A conductive frame 32 is attached to the opening 14c on the upper surface of the skeleton 14 from the inside of the skeleton 14, and the opening 14c is closed by the conductive frame 32 with the net 18b. At this time, the conductive frame 32 is fixed by the hexagonal bolts 28 whose heads are inserted into the second support T-grooves 12b and the second rail T-grooves 13b and the hexagonal nuts 31 screwed to these. In addition, a conductive plate 33 with a filter case 33a is attached to the opening 14b at the lower back of the skeleton 14 from the inside of the skeleton 14. As a result, the box 10 can be easily installed even when the installation place of the box 10 is close to the wall or ceiling of the computer room. Further, the door 16 is attached to one of the columns 12 forming the door opening 14a via a hinge 34. The electromagnetic wave shielding box 10 can be assembled by such a relatively simple operation.
[0035]
In the electromagnetic wave shielding box 10 manufactured in this manner, the state of the server computer 19 in the box 10 can be visually recognized from all sides through the wall net 17b and the door net 16b. Even if the server computer 19 generates a large amount of heat, the heat can be dissipated through the ceiling net 18b, the wall net 17b, and the door net 16b, which have extremely good air permeability, and introduced into the box 10 from the duct 26. Since the inside of the box 10 can be cooled by the cooling air, overheating of the server computer 19 can be prevented. Further, since each wall frame 17a is constituted by two meshed conductive frames 32 and the ceiling frame 18a is constituted by a single meshed conductive frame 32, the types of frames can be reduced. As a result, the number of types of parts can be reduced, so that parts management can be easily performed.
[0036]
16 to 18 show a second embodiment of the present invention. 16 to 18, the same reference numerals as those in FIGS. 4 and 5 indicate the same parts.
In this embodiment, the conductive frame 32 further includes a flat bar 41 that is inserted into a portion of the first groove 32b of the conductive frame 32 other than the portion where the frame connector 32c is inserted. The wall net 47b and the ceiling net 48b are formed using a conductive wire that is thicker and less flexible than the wall net and the ceiling net of the first embodiment. Except for the above, the configuration is the same as that of the first embodiment.
[0037]
In the electromagnetic wave shielding box configured as described above, the peripheral edges of the wall net 47b and the ceiling net 48b are inserted into the first concave groove 32b, and in this state, the frame connecting member 32c and the flat bar 41 are connected to the first concave groove 32b. The wall member 47 and the ceiling member 48 are manufactured by being inserted into the 32b and fixed with the flathead screw 32f. As a result, even if the wall net 47b and the ceiling net 48b are formed using a thick and inflexible conductive wire, the wall net 47b and the ceiling net 48b can be reliably compared with the conductive frame 32. The target can be easily fixed. The operation other than the above is substantially the same as the operation of the first embodiment, and therefore, the description thereof will not be repeated.
[0038]
FIG. 19 shows a third embodiment of the present invention. 19, the same reference numerals as those in FIG. 1 indicate the same parts.
In this embodiment, a tapping screw 53 is used instead of a hexagon bolt and a hexagon nut as a fastener for attaching the conductive frame 32 to the column 52 and the crosspiece. In this case, the support 52 is formed not with the second support T-groove but with a support pilot hole 52b narrower than the nominal diameter of the tapping screw 53. A pilot hole smaller than the nominal diameter of the screw is formed. Except for the above, the configuration is the same as that of the first embodiment.
[0039]
In the electromagnetic wave shielding box 50 configured as described above, the tapping screw 53 is screwed into the pilot hole 52b and the pilot hole through the conductive frame 32 while cutting the female screw. Since it can be attached to the crosspiece, the workability of assembling the conductive frame 32 can be improved as compared with the first embodiment. The operation other than the above is substantially the same as the operation of the first embodiment, and therefore, the description thereof will not be repeated.
[0040]
FIG. 20 shows a fourth embodiment of the present invention. 20, the same reference numerals as those in FIG. 19 indicate the same parts.
In this embodiment, a door frame 67 is formed by a conductive member into a shape corresponding to the door opening 14a, and a door frame is formed by a conductive strip material into a frame. And a plurality of conductive frames 32 removably attached to 68. The door frame 68 is formed in a rectangular cylindrical shape thinner than the column 52 or the crosspiece by extrusion or drawing of an aluminum alloy. The door frame 68 includes two vertical cylinders 68a having substantially the same length as the support columns 52, two horizontal cylinders (not shown) having substantially the same length as the crosspiece, and a vertical It has an L-shaped cylindrical connector (not shown) for connecting the cylindrical body 68a and the horizontal cylindrical body. The cross-sectional shape of the vertical cylindrical body 68a and the cross-sectional shape of the horizontal cylindrical body are formed to be the same, and the connecting member for the cylindrical body is formed to have the same shape and size as the connecting device for the skeleton.
[0041]
The vertical cylinder 68a is formed in a shape obtained by cutting one corner of a square cylinder into a substantially V shape. A T-groove 68c for a vertical cylinder body extending in the longitudinal direction of the vertical cylinder body 68a is formed on one of the pair of surfaces forming the corner, which is left uncut, and is connected to the connector mounting surface 68b. A vertical cylindrical body lower hole 68e is provided at a predetermined interval on the frame mounting surface 68d which is a surface cut in a substantially W shape and adjacent to the surface on which the vertical cylindrical T groove 68c is formed. It is formed. Although not shown, the horizontal cylinder has a shape obtained by cutting one corner of a rectangular cylinder into a substantially V-shape and has a connector mounting surface and a frame mounting surface, similarly to the vertical cylindrical body 68a, A T-groove for a horizontal cylinder having the same shape as the T-groove 68c for the vertical cylinder is formed in the connecting member mounting surface, and a pilot hole for a horizontal cylinder having the same shape as the pilot hole 68e for the vertical cylinder is formed in the frame mounting surface. You.
[0042]
A hexagonal nut (not shown) having a relatively large nominal diameter is slidably inserted into the vertical cylindrical body T-groove 68c and the horizontal cylindrical body T-groove, and is provided with a vertical cylindrical body lower hole 68e and a horizontal cylindrical body lower part. A tapping screw 69 can be screwed into the hole. The vertical cylinder 68a and the horizontal cylinder include a vertical cylinder T groove 68c, a horizontal cylinder T groove, a substantially L-shaped cylinder coupling tool, a vertical cylinder T groove 68c, and a horizontal cylinder. A hexagonal nut having a relatively large nominal diameter that is slidably inserted into the T-groove for use, and a hexagon socket head cap screw that is screwed to this nut are detachably connected to each other. One vertical cylinder 68a of the door frame 68 is pivotally connected to one of the columns 52 forming the door opening 14a via a hinge 72, and the other vertical cylinder 68a of the door frame 68 is used for the door. It comes into contact with the other column 12 forming the opening 14a so as to be detachable.
[0043]
The conductive frame 32 is formed in the same shape and size as the conductive frame of the first embodiment. In this embodiment, two conductive frames 32 are detachably attached to the door frame 68. The door net 66a is fixed to the two conductive frames 32 in the same manner as in the first embodiment. Reference numeral 71 in FIG. 20 denotes a tapping screw for attaching the hinge 72 to the column 52 and the vertical cylinder 68a, and reference numeral 73 causes the door frame 68 to come into close contact with the column 52 and the crosspiece when the door 66 is closed. Conductive packing having flexibility. Except for the above, the configuration is the same as that of the third embodiment.
[0044]
In the electromagnetic wave shielding box 60 configured as described above, the conductive frame 32 used as a part of the component of the wall member 17 and the ceiling member 18 can be used as a part of the component of the door 66. Although the number of parts including the body 68a and the horizontal cylinder increases, other parts related to the door 66 can be shared. As a result, the number of types of parts can be reduced, so that parts management can be easily performed. The operation other than the above is substantially the same as the operation of the third embodiment, and therefore, the description thereof will not be repeated.
[0045]
21 to 23 show a fifth embodiment of the present invention. 21 to 23, the same reference numerals as those in FIGS. 2, 3, and 19 denote the same parts.
In this embodiment, a support column 81 has four corner column portions 82 formed in the same shape and size as the column of the first embodiment, and stands up at a predetermined interval between these corner columns 82. There are ten intermediate pillars 83 provided, and the bar 86 has a total of 28 peripheral bars 87 each having 14 upper and lower portions of the same shape and size as the bar of the first embodiment, and a peripheral bar 87. And four intermediate crosspieces 88 erected at the upper ends of four opposing intermediate pillars 83 having a length approximately twice as large as the above. The cross-sectional shapes of the corner post 82, the peripheral bar 87, and the intermediate bar 88 are the same. Further, the intermediate column 83 is formed with a pair of parallel connector mounting surfaces 83a, 83a for mounting the skeleton connecting device and extending in the longitudinal direction of the intermediate column 83 on the connecting device mounting surfaces 83a, 83a. And a pair of substantially V-shaped recesses provided adjacent to the pair of intermediate column T-grooves 83b, 83b and the pair of connecting member mounting surfaces 83a, 83a and for accommodating the outer peripheral edges of the conductive frame 32. 83c, 83c, and an intermediate pillar pilot hole 83d formed on one surface of each of the recesses 83c, 83c at a predetermined interval in the longitudinal direction of the intermediate pillar 83.
[0046]
Further, five doors 16 are mounted on the front surface of the box 80 in a state where they are arranged with a predetermined gap therebetween and can be opened and closed via a hinge 34. The reason why a predetermined gap is provided between adjacent doors is to facilitate opening and closing of the door. The conductive packing 37 shown in FIG. Has a function as a cushioning material. Except for the above, the configuration is the same as that of the first or third embodiment.
[0047]
In the electromagnetic wave shielding box 80 configured as described above, the number of small types of components such as the intermediate pillar portion 83 having a different sectional shape from the corner pillar portion 82 and the intermediate beam portion 88 having the same sectional shape as the corner pillar portion 82 is increased. A large box 80 having about 10 times the volume of the box of the first embodiment can be manufactured. As a result, even when the size of the server computer as a storage device increases, it is not necessary to change the shapes of the corner pillars 82 and the peripheral ridges 87, so that the function of shielding electromagnetic waves can be reliably exerted with a slight increase in the types of components. it can. The operation other than the above is substantially the same as the operation of the first or third embodiment, and therefore, the description thereof will not be repeated.
[0048]
【The invention's effect】
As described above, according to the present invention, the door has the conductive door frame and the conductive door net, the wall member has the conductive wall frame and the conductive wall net, Since the member has the conductive ceiling frame and the conductive ceiling net, the state of the housing equipment in the box can be visually recognized from at least three sides through the wall net or the door net, and even if the amount of heat generated by the housing equipment is large. The heat can be dissipated through very well ventilated ceiling nets, wall nets and door nets. In addition, since the wall members and the like are attached to the skeleton formed by assembling the struts and the crosspieces, by keeping the spacing between the struts constant, even if the shape or size of the accommodation equipment changes, the shapes of the struts and the crosspieces hardly change. By simply increasing or decreasing the number of pillars and crossbars, that is, simply increasing or decreasing the number of components without increasing the types of components, the function of shielding electromagnetic waves can be reliably exhibited.
[0049]
In addition, if the frame for the wall and the frame for the ceiling are constituted by a single or plural conductive frames of the same shape and the same size and the net is fixed to each conductive frame, the types of the frames can be reduced, that is, the types of the components can be reduced The parts management can be easily performed.
Also, the door frame of the door frame is pivotally attached to one of the columns of the door opening and detachably abuts the other column, and the plurality of conductive frames are detachably attached to the door frame, If the door net is fixed to the conductive frame, the types of the frame can be further reduced, that is, the types of the components can be further reduced, so that the component management can be performed more easily.
[0050]
In addition, if the wall frame and the ceiling frame are detachably attached to the strut and the crosspiece from the inside of the skeleton, the door opening of the skeleton peripheral surface is closed by the door from within the box, and the skeleton peripheral surface opening is opened. Of the openings, the openings other than the door opening can be closed by the wall member from inside the box, and the opening on the upper surface of the skeleton can be closed by the ceiling member from inside the box, so the installation location of the box approaches the wall or ceiling of the room Even in the state, it can be easily installed.
Also, if one piece of the frame connector is inserted into the first groove of the trapezoidal band member of the conductive frame and the other piece is inserted into the first groove of the band member adjacent to the band member, Since the plate members are connected in a rectangular frame shape, the conductive frame can be relatively easily assembled without impairing the appearance.
[0051]
In addition, if the periphery of the net is inserted into the second concave groove of the conductive frame and a string-shaped elastic member is further inserted, even if the net is a relatively thin and flexible conductive wire, Can be securely and extremely easily fixed to the conductive frame.
Also, if the frame connecting member and the flat bar are inserted into the first groove with the periphery of the net inserted into the first groove, the net is fixed to the conductive frame. Even with a net using a conductive wire, the net can be fixed to the conductive frame reliably and relatively easily.
[0052]
In addition, if the support and the crosspiece and the crosspiece and the crosspiece are detachably connected by the frame connecting tool, the support and the crosspiece can be relatively easily connected, and a robust skeleton can be constructed.
Further, a through hole for flowing cooling air is formed in the base plate, the ceiling member or the wall member, and a metal porous member having a shape corresponding to the through hole is inserted into the through hole, and the lower peripheral surface of the through hole such as the base plate is formed. By electrically connecting the lower peripheral edge of the metal porous member with a conductive sheet, cooling air can be quickly introduced into the box, and the electrical connection between the base plate and the metal porous member can be made with a relatively simple structure. Can be secured.
[Brief description of the drawings]
FIG. 1 is a sectional view taken along line AA of FIG. 2, showing an electromagnetic wave shielding box according to a first embodiment of the present invention.
FIG. 2 is a perspective view of the electromagnetic wave shielding box as viewed from the front.
FIG. 3 is a perspective view of the electromagnetic wave shielding box as viewed from the rear.
FIG. 4 is a front view of a meshed conductive frame constituting the wall member and the ceiling member.
FIG. 5 is a sectional view taken along line BB of FIG. 4;
FIG. 6 is an essential part perspective view showing an assembling procedure of the conductive frame with a net;
FIG. 7 is a longitudinal sectional view of the main part of the electromagnetic wave shielding box and a room where the box is installed.
8 is an enlarged sectional view of a portion C in FIG. 7;
FIG. 9 is a perspective view of a lower portion of the electromagnetic wave shielding box.
FIG. 10 is a lower corner portion of a skeleton constituted by columns and bars.
FIG. 11 is an upper corner portion of a skeleton constituted by columns and bars.
FIG. 12 is a sectional view taken along line DD of FIG. 10;
FIG. 13 is a sectional view taken along line EE of FIG. 10;
FIG. 14 is a sectional view taken along line FF of FIG. 11;
FIG. 15 is a sectional view taken along line GG of FIG. 11;
FIG. 16 is a front view illustrating a second embodiment of the present invention and corresponding to FIG. 4;
FIG. 17 is a sectional view taken along line HH of FIG. 16;
FIG. 18 is a sectional view taken along line II of FIG. 16;
FIG. 19 is a sectional view showing a third embodiment of the present invention and corresponding to FIG. 1;
FIG. 20 is a sectional view illustrating a fourth embodiment of the present invention and corresponding to FIG. 1;
FIG. 21 is a sectional view illustrating a fifth embodiment of the present invention and corresponding to FIG. 2;
FIG. 22 is a sectional view taken along line JJ of FIG. 21;
FIG. 23 is a sectional view taken along line KK of FIG. 21;
[Explanation of symbols]
10,50,60,80 Electromagnetic wave shielding box
11 Base plate
11a Through hole
12,52,81 Prop
13,86 pier
14 Skeleton
14a Door opening
14b Peripheral opening
14c upper surface opening
16,66 door
16a, 67 Door frame
16b, 66a Net for door
17, 47 wall members
17a Wall frame
17b, 47b Net for wall
18,48 Ceiling members
18a Frame for ceiling
18b, 48b Net for ceiling
22 Punching metal (metal porous member)
24 conductive sheet
29 Skeletal coupler
32 conductive frame
32a Strip plate member
32b first groove
32c Frame connector
32d second groove
32e elastic member
41 flat bar

[0007]
[Means for Solving the Problems]
As shown in FIGS. 1, 2 and 7, the invention according to claim 1 comprises three or more conductive columns 12 erected on a conductive base plate 11, Three or more bars 13 erected between the columns 12 and constituting a skeleton together with the columns 12, and a door opening 14a which is conductive and has an opening on the peripheral surface of the skeleton 14 is openably closed. A door member 16, a wall member 17 having conductivity and closing an opening 14 b on the peripheral surface of the skeleton 14 excluding the door opening 14 a, and a ceiling member 18 having conductivity and closing an opening 14 c on the upper surface of the skeleton 14. It is an improvement of the electromagnetic wave shielding box provided with:
The characteristic configuration is that the door 16 has a door frame 16a formed of a conductive member in a frame shape, and a door net 16b formed of a conductive wire and having a periphery fixed to the door frame 16a. A wall member 17 having a wall frame 17a formed in a frame shape from a conductive strip and a wall net 17b formed of a conductive wire and having a peripheral edge fixed to the wall frame 17a; 18, the ceiling frame 18a formed into a frame shape by a conductive band plate member, peripheral formed of a conductive wire material and a ceiling grid 18b which is fixed to the ceiling frame 18a and chromatic,
The wall frame (17) and the ceiling frame (18) are detachably attached to the columns (12) and the bars (13) from inside the skeleton (14) .

[0008]
In the electromagnetic wave shielding box according to the first aspect, the state of the housing device 19 in the box 10 can be visually recognized from at least three sides through the wall net 17b and the door net 16b, and even if the amount of heat generated by the housing device 19 is large. The heat can be dissipated through the ceiling net 18b, the wall net 17b, and the door net 16b, which have extremely good air permeability. Further, since the wall members 17 and the like are attached to the skeleton 14 formed by assembling the columns 12 and the bars 13, the spacing between the columns 12 is kept constant. By simply increasing or decreasing the number of columns 12 and bars 13 without changing the shape of the bar 13, that is, by simply increasing or decreasing the number of components with almost no increase in the type of components, the function of shielding electromagnetic waves is reliably exhibited. it can. Further, the door opening 14a of the opening of the skeleton 14 is closed by the door 16 from the inside of the box 10, and the opening 14b other than the door opening 14a of the opening of the skeleton 14 is closed from the inside of the box 10. Since the opening 14c on the upper surface of the skeleton 14 is closed by the ceiling member 18 from the inside of the box 10, the box 10 can be easily installed even when the box 10 is installed close to a wall or ceiling of the room.

[0012]
The invention according to claim 4 is the invention according to claim 2 or 3, wherein the conductive frame 32 has a first concave groove 32b extending in the longitudinal direction, as shown in FIGS. Are trapezoidal strip members 32a cut obliquely at 45 degrees, and one strip is inserted into the first concave groove 32b at one end of the strip plate member 32a, and the other strip is adjacent to the strip plate member 32a. An L-shaped frame connector 32c is inserted into the first concave groove 32b of the member 32a and connects the band plate members 32a in a rectangular frame shape.
In the electromagnetic wave shield box according to the fourth aspect , the conductive frame 32 can be relatively easily assembled without deteriorating the appearance of the conductive frame 32.

[0013]
The invention according to claim 5 is the invention according to claim 4 , and further has a ring-shaped second concave groove 32d formed along the longitudinal direction of the conductive frame 32 as shown in FIGS. The meshes 17b and 18b are fixed to the conductive frame 32 by inserting the peripheral edges of the meshes 17b and 18b into the second groove 32d and further inserting a string-like elastic member 32e.
In the electromagnetic wave shielding box according to the fifth aspect , even if the nets 17b and 18b using a relatively thin and flexible conductive wire are used, the nets 17b and 18b are securely and securely attached to the conductive frame 32. It can be fixed very easily.

[0014]
The invention according to claim 6 is the invention according to claim 4 , and furthermore, as shown in FIG. 16 to FIG. 18, in the first concave groove 32b of the conductive frame 32, an insertion portion of the frame connector 32c. The conductive frame 32 is further provided with a flat bar 41 that is inserted into the conductive frame 32 by inserting the peripheral edges of the nets 47b and 48b into the first groove 32b and further inserting the frame connecting tool 32c and the flat bar 41. The nets 47b and 48b are fixed.
In the electromagnetic wave shielding box according to the sixth aspect , even if the nets 47b, 48b using a relatively thick and inflexible conductive wire are used, the nets 47b, 48b are reliably and securely attached to the conductive frame 32. Can be fixed relatively easily.

[0015]
The invention according to claim 7 is the invention according to claim 1, and furthermore, as shown in FIGS. 10 to 15, the column 12 and the bar 13, and the bar 13 and the bar 13 can be detached by the frame connecting tool 29. It is characterized by being connected to.
In the electromagnetic wave shielding box according to the seventh aspect , the column 12 and the bar 13 can be connected relatively easily, and the robust skeleton 14 can be constructed.

[0016]
The invention according to claim 8 is the invention according to claim 1, and further includes a through hole 11a for flowing cooling air through the base plate 11, the ceiling plate, or the wall member, as shown in FIGS. A metal porous member 22 having a shape corresponding to the through hole is formed and inserted into the through hole 11a, and the lower peripheral edge of the through hole 11a of the base plate 11, the ceiling plate or the wall member and the lower peripheral edge of the metallic porous member 22 are formed. It is characterized by being electrically connected by the conductive sheet 24.
In the electromagnetic wave shielding box according to the eighth aspect , the cooling air can be quickly introduced into the box 10, and the base plate 11, the ceiling plate or the wall member, and the metal porous member 22 can be electrically connected with a relatively simple structure. Can be connected to
The metal porous member 22 is preferably a punched metal or a metal honeycomb structure.

[0048]
【The invention's effect】
As described above, according to the present invention, the door has the conductive door frame and the conductive door net, the wall member has the conductive wall frame and the conductive wall net, Since the member has the conductive ceiling frame and the conductive ceiling net, the state of the housing equipment in the box can be visually recognized from at least three sides through the wall net or the door net, and even if the amount of heat generated by the housing equipment is large. The heat can be dissipated through very well ventilated ceiling nets, wall nets and door nets. In addition, since the wall members and the like are attached to the skeleton formed by assembling the struts and the crosspieces, by keeping the spacing between the struts constant, even if the shape or size of the accommodation equipment changes, the shapes of the struts and the crosspieces hardly change. By simply increasing or decreasing the number of pillars and crossbars, that is, simply increasing or decreasing the number of components without increasing the types of components, the function of shielding electromagnetic waves can be reliably exhibited.
In addition, if the wall frame and the ceiling frame are detachably attached to the strut and the crosspiece from the inside of the skeleton, the door opening of the skeleton peripheral surface is closed by the door from inside the box, and the opening of the skeleton peripheral surface is opened. Of the openings, the openings other than the door opening can be closed by the wall member from inside the box, and the opening on the upper surface of the skeleton can be closed by the ceiling member from inside the box, so the installation location of the box approaches the wall or ceiling of the room Even in the state, it can be easily installed.

[0050]
By inserting another piece insert a piece of the frame for coupling to the first groove of the trapezoidal strip member or conductive frame to the first groove of the band plate member adjacent to the strip member, Since the band plate members are connected in a rectangular frame shape, the conductive frame can be relatively easily assembled without deteriorating the appearance.

[0007]
[Means for Solving the Problems]
As shown in FIGS. 1, 2 and 7, the invention according to claim 1 comprises three or more conductive columns 12 erected on a conductive base plate 11, Three or more bars 13 erected between the columns 12 and constituting a skeleton together with the columns 12, and a door opening 14a which is conductive and has an opening on the peripheral surface of the skeleton 14 is openably closed. A door member 16, a wall member 17 having conductivity and closing an opening 14 b on the peripheral surface of the skeleton 14 excluding the door opening 14 a, and a ceiling member 18 having conductivity and closing an opening 14 c on the upper surface of the skeleton 14. It is an improvement of the electromagnetic wave shielding box provided with:
The characteristic configuration is that a pair of frame mounting surfaces 12d, 12d is formed by forming the column 12 into a shape obtained by cutting one corner of a square tube into a substantially W-shaped cross section, and the bar 13 is connected to one of the square tubes. A pair of frame mounting surfaces 13d, 13d are formed by forming one of the corners into a shape cut into a substantially W-shaped cross section, and the door 16 has a door frame 16a formed in a frame shape by a conductive member. A door net 16b having a peripheral edge fixed to the door frame 16a formed of a conductive wire rod, wherein the wall member 17 is formed of a conductive strip material in a frame shape; And a wall net 17b whose peripheral edge is fixed to the wall frame 17a, and the ceiling member 18 is formed of a frame 18a formed of a conductive strip and a frame. Ri periphery are formed and a ceiling grid 18b which is fixed to the ceiling frame 18a, a fixed ceiling frame 18 of the fixed wall frames 17 and ceiling grid 18b of the wall network 17b skeleton 14 Are detachably mounted on the frame mounting surface 12d of the support 12 and the frame mounting surface 13d of the bar 13 from the inside.

Claims (10)

Three or more conductive columns (12) erected on a conductive base plate (11), and the conductive columns (12) erected between the conductive columns (12); And three or more bars (13) that together form a skeleton (14), and a door (16) that has conductivity and that can openably close a door opening (14a) among the openings on the peripheral surface of the skeleton (14). ), A conductive wall member (17) for closing the opening (14b) on the peripheral surface of the skeleton (14) except for the door opening (14a), and the conductive skeleton (14). ), A ceiling member (18) for closing the opening (14c) on the upper surface of the electromagnetic wave shielding box,
A door frame (16a) in which the door (16) is formed in a frame shape by a conductive member; and a door net (16b) formed of a conductive wire and having a periphery fixed to the door frame (16a). And having
A wall frame (17a) in which the wall member (17) is formed in a frame shape from a conductive strip material, and a wall net (17) formed of a conductive wire and having a periphery fixed to the wall frame (17a); 17b) and
A ceiling frame (18a) in which the ceiling member (18) is formed in a frame shape by a conductive strip material; and a ceiling net (18) formed of a conductive wire and having a periphery fixed to the ceiling frame (18a). 18b). The wall frame (17a) and the ceiling frame (18a) are composed of one or more conductive frames (32) of the same shape and size, and the nets (17b, 18b) are fixed to each conductive frame (32). The electromagnetic wave shielding box according to claim 1, wherein A door frame (66) is formed by a conductive member into a shape corresponding to the door opening (14a), and is pivotally attached to one of the columns (52) forming the door opening (14a) and the other. A door frame (67) detachably in contact with the column (52); and a plurality of conductive frames (32) formed in a frame shape by a conductive strip and detachably attached to the door frame (67). )
The electromagnetic wave shielding box according to claim 1, wherein a door net (66a) is fixed to the conductive frame (32). The electromagnetic wave shielding box according to claim 1 or 2, wherein the wall frame (17) and the ceiling frame (18) are detachably attached to the columns (12) and the bars (13) from inside the skeleton (14). A conductive frame (32) having a first concave groove (32b) extending in the longitudinal direction and having four trapezoidal band members (32a) cut at an angle of 45 degrees at both ends; One end of the member (32a) is inserted into the first groove (32b), and the other piece is inserted into the first groove (32b) of the band member (32a) adjacent to the band member (32a). The electromagnetic wave shielding box according to claim 2 or 3, further comprising an L-shaped frame connector (32c) for connecting the band plate member (32a) in a rectangular frame shape. A ring-shaped second groove (32d) is formed along the longitudinal direction of the conductive frame (32), and the peripheral edge of the net (17b, 18b) is inserted into the second groove (32d) to further form a string. The electromagnetic wave shielding box according to claim 5, wherein the mesh (17b, 18b) is fixed to the conductive frame (32) by inserting an elastic member (32e). A flat bar (41) is further inserted into the first groove (32b) of the conductive frame (32) other than the insertion portion of the frame connector (32c), and the first groove (32b) is provided. By inserting the peripheries of the nets (47b, 48b) into the holes and further inserting the frame connecting member (32c) and the flat bar (41), the nets (47b, 48b) are inserted into the conductive frame (32). The electromagnetic wave shielding box according to claim 5, which is fixed. The electromagnetic wave shielding box according to claim 1, wherein the support (12) and the crosspiece (13), and the crosspiece (13) and the crosspiece (13) are detachably connected to each other by a skeleton connecting member (29). A through hole (11a) for flowing cooling air is formed in the base plate (11), the ceiling member or the wall member, and a metal porous member (22) having a shape corresponding to the through hole is formed in the through hole (11a). Is inserted, and the lower surface of the periphery of the through hole (11a) of the base plate (11), ceiling member or wall member and the lower surface of the periphery of the metal porous member (22) are electrically connected by a conductive sheet (24). The electromagnetic wave shielding box according to claim 1. The electromagnetic wave shielding box according to claim 9, wherein the metal porous member (22) is a punched metal or a metal honeycomb structure.

Images