JP2001007584A - Magnetic shielding room and its assembly method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a magnetic shielding room having structure in which cost can be reduced by using a specification product, and its assembly method. SOLUTION: The shielding room is composed of inner-box forms 30 for partitioning a magnetic shielding space, outer box forms 15 separated by a fixed distance to the inner box forms 30 and used for partitioning an outer magnetic shielding space on the outside of the inner box forms, a plurality of permalloy plates 16 covering each surface of the inner box forms 30 and the outer box forms 15 and having specified areas, and holding plates 43 holding the permalloy plates 16 from the upper sections of the permalloy plates. Deviated tapped holes 44 are formed to the holding plates 43, the permalloy plates 16 are inserted from the lower sides under the state in which the tapped holes are fixed temporarily up and down, and the holding plates 43 are fixed mainly and the permalloy plates 16 are fastened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic shield room for covering a certain space by using a high magnetic permeability material such as permalloy to block an external magnetic field, and a method of assembling the same.

[0002]

2. Description of the Related Art In order to measure a weak magnetic field using a magnetic sensor, a magnetic shield room is required to prevent the influence of an external magnetic field on a measurement room. FIG. 23 shows a conventional magnetic shield room. This magnetic shield room 1
00 has a box shape. Box-shaped structural frame 102
Has a thickness of about 20 cm, and a permalloy plate 104, which is a magnetic shielding material, is attached to the indoor side surface and the outer side surface of the structural frame 102. As a result, the space formed inside the structural frame 102 is the structural frame 1
02 is a magnetic shield space doubly surrounded by the permalloy plate 104 separated by the thickness of 02.

A door 106 is provided on one side of the structural frame 102.
Is provided, through which the measuring instrument can be carried in and out, and an operator can go in and out. The door 106 is also about 20 cm like the structural frame 102
And a permalloy plate 104 is attached to both sides of the door 106. The magnetic shield space is double-enclosed with permalloy, which is a high magnetic permeability material, to form a magnetic shield space in which an external magnetic field is blocked.

[0004]

In order to block an external magnetic field, it is necessary to surround the magnetic shield space with a material having high magnetic permeability such as permalloy according to the size of the magnetic shield space. For this reason,
In the conventional magnetic shield room, when the required shape and size of the magnetic shield space are different, every time the magnetic shield room including the structural frame is manufactured as a custom product. The permalloy plate of the magnetic shield material was also formed according to the shape and size of the magnetic shield space. A magnetic shield material such as permalloy has a limitation that it is difficult to manufacture a plate having a large shape, and that magnetic properties deteriorate, so that it cannot be processed after the manufacture. For this reason,
Conventional magnetically shielded rooms have been very expensive.

An object of the present invention is to provide a magnetically shielded room that can greatly reduce the manufacturing cost by using standardized products even for magnetically shielded rooms having different shapes and sizes. It is another object of the present invention to provide a method of assembling a magnetically shielded room that can be easily assembled by a small number of workers even at an installation site.

[0006]

SUMMARY OF THE INVENTION The object of the present invention is to provide a mold for defining a magnetic shield space, and a plurality of magnetic shield plates of a predetermined area arranged on each surface of the mold with a sufficient gap for the magnetic shield. And a fixing means for fixing the plurality of magnetic shield plates to each surface of the formwork.

[0007] In the above-mentioned magnetic shield room, the fixing means is formed with a plurality of tightening holes which are deviated from the center of the width in the transverse direction in one of the transverse directions and are aligned along the longitudinal direction. A plurality of pressing plates for pressing the opposite edges of the plate by the respective edges in the longitudinal direction, and a fastener for fixing the pressing plate to each surface of the form via the fastening holes. Is desirable.

In the above-described magnetic shield room, the plurality of magnetic shield plates are arranged so that their peripheral edges overlap with each other, and the fixing means is provided through a fastening hole formed in a central portion of the magnetic shield plate. It is desirable to have a fastener for fixing the magnetic shield plate to each surface of the formwork. In the above-described magnetic shield room, the fastening holes formed in the magnetic shield plate have a plurality of holes arranged in parallel with one side of the magnetic shield plate, and a direction perpendicular to the arrangement direction of the plurality of holes. Desirably, it comprises a plurality of holes arranged in a direction.

In the above-described magnetic shield room, the magnetic shield plate has a planar shape in which two rectangles are overlapped so as to be deviated in the diagonal direction, and two adjacent sides have a peripheral portion with respect to a central portion. It is preferable that the plurality of magnetic shield plates are biased in the thickness direction, and that the plurality of magnetic shield plates be disposed so that the biased peripheral portions overlap the peripheral edges of the other two sides of the adjacent magnetic shield plates.

In the above-mentioned magnetic shield room, the magnetic shield plate is made of two shield plate members which are deviated in the diagonal direction and overlapped and joined to each other, and the plurality of magnetic shield plates are formed on the periphery of two adjacent sides. It is desirable that the portion is disposed so as to overlap with the periphery of the other two sides of the adjacent magnetic shield plate. In the above-described magnetic shield room, the form has an inner box form surrounding the magnetic shield space, and an outer box form surrounding the inner form, and the inner form and the outer form are provided. It is desirable that the plurality of magnetic shield plates be arranged and fixed on each surface of the frame.

[0011] The object of the present invention is to provide a first step of placing a floor frame covered with a magnetic shield material in an installation area where a magnetic shield room is installed, and a second step of installing a wall frame at an edge of the floor frame.
And a third step of arranging and fixing a plurality of magnetic shield plates on each surface of the wall frame with a sufficient gap to the magnetic shield, and covering the wall frame with a magnetic shield material. And a fourth step of installing a ceiling frame.

In the above-described method of assembling a magnetic shield room, in the third step, a plurality of tightening holes are formed which are deviated upward in the short direction from the center in the short direction and are aligned in the longitudinal direction. A step of temporarily fixing the plurality of holding plates to the wall frame by a fastener through the fastening hole, so as to be continuous in the horizontal direction and at a predetermined distance in the vertical direction,
After the upper end of the magnetic shield plate having a predetermined area is inserted between the surface of the wall frame and the presser plate from below the presser plate located above, the lower end of the magnetic shield plate is inserted into the lower side of the presser plate. A step of inserting between the surface of the wall frame and the holding plate from above, and tightening the fastener to fully fix the holding plate to the wall frame, thereby opposing each edge of the plurality of magnetic shield plates. To the wall frame.

In the above-described method of assembling a magnetic shield room, the third step is a step of arranging magnetic shield plates of a predetermined area such that their peripheral portions overlap each other.
It is preferable that the method further includes a step of fixing the magnetic shield plate to each surface of the mold using a fastener through a fastening hole formed in a central portion of the magnetic shield plate. In the above-described method of assembling the magnetic shield room, the magnetic shield plate has a planar shape in which two rectangles are overlapped while being deviated in a diagonal direction, and a peripheral portion of two adjacent sides is positioned with respect to a central portion. The third step is such that the plurality of magnetic shield plates are overlapped with the peripheral edges of the other two sides of the adjacent magnetic shield plate. It is preferable that the method further includes a step of disposing and a step of fixing the plurality of magnetic shield plates to each surface of the mold.

In the above-described method of assembling a magnetic shield room, the magnetic shield plate is formed of two shield plate members which are deviated in a diagonal direction and are overlapped and joined to each other. The shield plate,
A step of arranging the adjacent two sides of the magnetic shield plate so as to overlap with the other two sides of the adjacent magnetic shield plate; and a step of fixing the plurality of magnetic shield plates to each surface of the formwork. It is desirable to have.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A magnetic shield room according to a first embodiment of the present invention will be described with reference to FIGS. FIG.
FIG. 2 is a perspective view of the magnetic shield room, FIG. 2 is an explanatory diagram showing the internal structure of the magnetic shield room, and FIG. 3 is an explanatory diagram showing the structure of each frame of the magnetic shield room. In each of the embodiments described below, a case where the magnetically shielded room is box-shaped will be described as an example.

The magnetic shield room 10 is shown in FIGS.
As shown in FIG.
And an outer box 11 surrounding the inner box. The outer box 11 is provided with an outer box sliding door 13, and the inner box 12 is provided with an inner box sliding door 14 in order to carry in and out the measuring instrument and to let the operator in and out. First, details of the structure of the outer box 11 will be described with reference to FIG.

The outer case 11 is formed by covering the outer case form 15 with a plurality of permalloy plates 16 made of permalloy (μ metal) as a magnetic shielding material. Outer box formwork 15
Are the outer box floor frame 17, four outer box wall frames 18, and the outer box ceiling frame 1.
9 is formed in combination. These outer box floor frames 17,
The outer box wall frame 18 and the outer box ceiling frame 19 have a rectangular frame 50 shown in FIG. 3 as a basic structure. The frame 50 is formed by combining aluminum aggregates 52 in a lattice shape.
By adjusting the number and length of the aluminum aggregate 52, the frame 50 can be formed in accordance with the required size of each of the frames 17, 18, and 19.

The aluminum aggregate 52 is formed by molding aluminum into a column shape. For example, standard products manufactured as aluminum sash members and balcony members, which are house building materials, can be used. The four outer box wall frames 18 are
It is arranged vertically on each side of the periphery of the outer box floor frame 17.
The outer box wall frame 18 and the outer box floor frame 17 are fixed by standard fittings (not shown). An outer box ceiling frame 19 is provided at the upper end of each outer box wall frame 18 fixed to the outer box floor frame 17.
Is placed horizontally. The outer box ceiling frame 19 and each outer box wall frame 18 are similarly fixed by standard fittings (not shown).

The outer box floor frame 17 is provided in the magnetic shield room 10.
Is installed via a permalloy plate 16 on the floor surface 21 at the place where the is installed. On the floor surface 21, a soft rubber sheet 22 for vibration isolation, a composite panel 23 made of a plywood material, a permalloy plate 16, and an aluminum plate 24 for electromagnetic shielding are sequentially stacked. Soft rubber sheet 22,
A plurality of composite panels 23, permalloy plates 16, and aluminum plates 24 are laid out vertically and horizontally. In particular, since the permalloy plate 16 cannot form a large-sized plate material, a large number of permalloy plates 16 are required.
Is used. In order to achieve a sufficient magnetic shielding effect, a large number of permalloy plates 16 are laid with their edges overlapped with no gap.

Each outer box wall frame 18 has an aluminum plate 24
And a composite panel 23 are attached. The permalloy plate 16 is mounted on the composite panel 23 so as to be pressed down from the outside by a rectangular pressing plate 43 fixed on the composite panel 23 using screws. In addition, since the permalloy plate 16 cannot form a large-sized plate material, a large number of permalloy plates 16 standardized to a certain size are provided on the composite panel 23 in a state of being adjacent to each other without any gap.

The aluminum plate 2 is placed on the outer box ceiling frame 19.
4 and a composite panel 23 are attached. The permalloy plate 16 in this area is the composite panel 2
3 is attached using an adhesive or a screw (not shown). An outer box opening 26 that communicates the inside and outside of the outer box 11 is opened on one side surface of the outer box 11. The outer case sliding door 13 is provided in the outer case opening 26.

As shown in FIG. 3, the outer case sliding door 13 also has a basic structure of a rectangular frame 50 in which aluminum aggregates 52 are combined in a lattice shape. An aluminum plate 24 is provided on one side of the sliding door frame 27 in which the aluminum aggregate 52 is combined.
And the composite panel 23, and the permalloy plate 16 is stuck on the composite panel 23. The outer case sliding door 13 is slidably mounted by an upper rail 28 and a lower rail 29 provided on the upper and lower peripheral edges of the outer case opening 26. Since the outer end of the upper rail 28 is bent downward and the outer end of the lower rail 29 is bent upward, the outer box sliding door 13 is held without coming off from both rails 28 and 29.

Since the outer case sliding door 13 is larger than the outer case opening 26, the permalloy plate 16 of the outer case sliding door 13 is closed when the outer case opening 26 is closed by the outer case sliding door 13.
6 and overlap the permalloy plate 16 around it, and the external magnetic field can be completely shut off. The above-described outer box structure is the same for the inner box 12 installed inside the outer box structure. Hereinafter, the structure of the inner box 12 will be briefly described with reference to FIG.

The inner box 12 is formed by covering the inner box form 30 with a permalloy plate 16 which is a magnetic shielding material. The inner box formwork 30 includes an inner box floor frame 31 and four inner box wall frames 3.
2 and the inner box ceiling frame 33 in combination. These inner box floor frame 31, inner box wall frame 32, and inner box ceiling frame 33 are also
The basic structure is a rectangular frame 50 shown in FIG.

The four inner box wall frames 32 are vertically arranged on each side of the periphery of the inner box floor frame 31. The inner box wall frame 32 and the inner box floor frame 33 are fixed by standard fittings (not shown). At the upper end of each inner box wall frame 32 fixed to the inner box floor frame 31, an inner box ceiling frame 33 is placed horizontally. Similarly, the inner box ceiling frame 33 and each inner box wall frame 32 are also fixed by standard fittings (not shown).

The inner box floor frame 33 is provided via a base 34 in order to secure a distance from the outer box floor frame 17. Base 3
4 is made of an aluminum alloy. Base 34
A composite panel 23 is fixed to the panel, and a permalloy plate 16 is spread over the composite panel 23 without gaps. The inner box floor frame 33 is placed on this.

Each inner box wall frame 32 has an aluminum plate 24
And a composite panel 23 are attached. The permalloy plate 16 here is also formed by a rectangular pressing plate 43 fixed on the composite panel 23 using screws.
It is mounted on the composite panel 23 so as to be pressed down from the outside. Similarly to the outer box ceiling frame 19, the aluminum plate 24 and the composite panel 23 are also mounted on the inner box ceiling frame 33. The permalloy plate 16 is stuck on the composite panel 23 using an adhesive or a screw (not shown).

An inner box opening 37 is provided on one side of the inner box 12 for communicating the inside and the outside of the inner box 12. Inner box opening 37
Is provided with an inner box sliding door 14. Inner box sliding door 14
Also, as shown in FIG. 3, the basic structure is a rectangular frame 50 in which aluminum aggregates 52 are combined in a lattice shape.
The composite panel 23 is attached to one side of the sliding door frame 38 in which the aluminum aggregate 52 is combined, and the permalloy plate 16 is adhered on the composite panel 23.

The inner box sliding door 14 is slidably mounted by an upper rail 39 and a lower rail 40 provided on the upper and lower peripheral edges of the inner box opening 37. Since the outer end of the upper rail 39 is bent downward and the outer end of the lower rail 40 is bent upward, the inner box sliding door 14 is held without coming off from both rails 39 and 40. Since the inner box sliding door 14 is larger than the inner box opening 37, the permalloy plate 1 of the inner box sliding door 14 is closed when the inner box opening 37 is closed by the inner box sliding door 14.
6 overlaps the permalloy plate 16 around the inner box opening 37, so that the external magnetic field can be completely shut off.

In the present embodiment, the outer box 11 and the inner box 12 of the magnetically shielded room 10 are formed using, for example, standard products described below. The aluminum aggregate 52 forming the frame 50 is approximately 70 mm square, which is generally used as an aluminum sash member or a balcony member, and can be cut freely. Aluminum sash members and balcony members come in various types of standard products in shape, thickness and length. By appropriately selecting the required size from these, it is possible to easily and inexpensively produce various sizes. The frame 50 of the aluminum aggregate 52 can be formed.

The permalloy plate 16 is, for example, about 1 m thick.
After being cut out into a rectangular shape of about 60 cm × 90 cm by m, it is formed by heat treatment. Presser plate 43
Is cut out into a slender rectangular shape having a thickness of about 1 mm and a size of about 15 cm × 90 cm, for example, corresponding to the lateral dimensions of the permalloy plate 16. Also, the holding plate 4 formed in this manner.
3, as shown in FIG. 10, one of the short sides from the width center line X in the short side direction a (in this case,
A plurality of screw holes (tightening holes) 44 which are deviated to about 4 cm upward and are arranged in a line along the longitudinal direction b are formed.

The soft rubber sheet 21 is a rubber sheet having a thickness of about 5 mm, and the composite panel 23 has a thickness of about 12 mm.
Plywood of thickness. The soft rubber sheet 22 and the composite panel 23 can be cut freely, and are both formed in a rectangular shape having a predetermined size. The aluminum plate 24 is formed in a rectangular shape of a predetermined size with a thickness of about 5 mm, and can be cut freely.

Next, the method for assembling the magnetically shielded room according to the present embodiment will be explained with reference to FIGS. First, as shown in FIG. 4, a soft rubber sheet 22, a composite panel 23, and a permalloy plate 16 are sequentially stacked on a floor surface 21 where a magnetic shield room is to be installed. The soft rubber sheet 22 and the composite panel 23
The outer boxes 11 are laid out so that the required floor area can be secured. A plurality of permalloy plates 16 are laid out vertically and horizontally on the composite panel 23. The permalloy plate 16 is laid twice and has a total thickness of about 2 mm. The permalloy plate 16 is spread over a wider area than the outer box floor frame 17.

Next, as shown in FIG.
The aluminum plate 24 is spread over the 6. The aluminum plate 24 is adjusted to have substantially the same size as the outer box floor frame 17 and spread. The seams of the aluminum plate 24 are laid with copper tape. Subsequently, the outer box floor frame 17 is set on the aluminum plate 24. By doing so, the outer case floor 41 in which the outer surface of the outer case floor frame 17 is covered with the aluminum plate and the 24-permalloy plate 16 is formed.

Next, as shown in FIG. 6, the base 34 is placed on the floor frame 17 of the outer box, and the composite panel 2 is placed thereon.
3 is placed. The height of the base 34 depends on the permalloy plate 16 of the outer box floor frame 17 and the inner box floor frame 3 installed on the base 34.
One permalloy plate 16 is set to be separated by a distance of about 20 cm. This distance is, for example, 10 cm to 30 cm depending on the size of the magnetic shield room.
Is adjusted within the range.

Next, as shown in FIG. 7, permalloy plates 16 are arranged on the composite panel 23 vertically and horizontally. The permalloy plate 16 is spread three times, and has a thickness of about 3 mm in total. The permalloy plate 16 is spread over a wider area than the inner box floor frame 31.
Subsequently, the inner box floor frame 31 is placed on the permalloy plate 16.

Next, as shown in FIG. 8, four inner box wall frames 32 and an inner box ceiling frame 33 are provided on the inner box floor frame 31 to form the inner box formwork 30. On each side of the inner box floor frame 31, four inner box wall frames 32 are placed, and the inner box floor frame 31 and each inner box wall frame 32 are placed.
Are fixed by connecting fittings (not shown). An inner box ceiling frame 33 is placed on the upper end of each inner box wall frame 32 fixed to the inner box floor frame 31, and each inner box wall frame 32 and the inner box ceiling frame 33 are placed.
Are fixed by connecting fittings (not shown). By fixing each inner box wall frame 32 and the inner box ceiling frame 33, a cubic inner box form 30 is formed. An inner box opening 37 that penetrates the inner box wall frame 32 is opened in one of the inner box wall frames 32 in advance.

Next, as shown in FIG. 9, a permalloy plate 16 that covers the inner box form 30 is attached. After forming the inner box form 30, the composite panel 23 is attached to the entire outer area of the inner box wall frame 32 and the inner box ceiling frame 33 excluding the inner box opening 37. For example, composite panel 2 with wood screws made of brass
3 is fixed to each frame 32,33. Thus, the inner box form 30 is covered with the composite panel 23.

When the composite panel 23 is mounted on the inner box form 30 in this way, a large number of holding plates 43 as shown in FIG. 10 are prepared. These holding plates 4
3, using a screw hole (tightening hole) 44 formed in advance,
For example, each is temporarily fixed by a brass wood screw (fastening tool) 45 slightly above the surface of the composite panel 23 on the inner box wall frame 32. At the time of individual mounting, as shown in FIGS.
3, and each holding plate 43 is arranged in a row in parallel to the inner box floor frame 31, and sequentially from the lower side surface of the inner box form 30 to the upper side in the upward direction. They are arranged at a distance slightly larger than 16 short widths (about 60 cm).

When the holding plate 43 is temporarily fixed substantially over the entire side surface of the inner box form 30 in this manner, the permalloy plate 16 is then moved between the upper and lower holding plates 43 as shown in FIG. And between the holding plate 43 and the composite panel 23. That is, first, the upper end of the permalloy plate 16 is inserted from below the upper holding plate 43 between the composite panel 23 and the holding plate 43, and then the permalloy plate 1 is inserted.
6 is inserted between the composite panel 23 and the holding plate 43 'so as to get over the upper end of the lower holding plate 43', and the permalloy plate 16 is temporarily fixed to the holding plate 43 '.
It is supported downward by two wood screws 45.

In this manner, the permalloy plates 16 are arranged in order from one side of the side surface to the other side, and are arranged sequentially upward from the lower end of the side surface. By screwing into the composite panel 23, the composite panel 23 is firmly fixed on the composite panel 23 in a state where the composite panel 23 is urged by the upper and lower pressing plates 43 and 43 '.

The permalloy plate 16 located at the lowermost end
Of the inner box floor frame 31 and the inner box wall frame 32 via a permalloy rail-mounted angle screwed to each composite panel 23, and a pressing plate 43 located at the uppermost end.
Is fixed via a permalloy angle 47 screwed to each composite panel 23 of the inner box ceiling frame 33 and the inner box wall frame 32.

Further, with respect to the permalloy plates 16 arranged in the lateral direction on the side, the adjacent permalloy plates 1
By overlapping the side edges of each other,
The excess portion is appropriately absorbed, and is fixed to the composite panel 23 of the inner box wall frame 32 via an angle 47 screwed. As for this direction, as shown in FIG. 13, the permalloy plate 16 at the corner may be protruded to the left from the inner box wall frame 32 to escape therefrom.

After the permalloy plate 16 has been fixed over the entire area of the inner box wall frame 32 as described above, FIG.
As shown in FIG. 4, the inner box sliding door 14 is attached to the inner box opening 37 of the inner box 12, and the interior is provided. An upper rail 39 and a lower rail 4 are provided on the outer surface of the inner box 12 around the inner box opening 37.
0 is attached. The upper rail 39 and the lower rail 40 are formed using, for example, aluminum aggregates with rails prepared as standard products of aluminum sash members. When forming the inner box wall frame 32, the aluminum aggregate with the rail is assembled in advance in accordance with the rail mounting position.

The sliding door frame 38 of the inner box sliding door 14 is formed to be larger than the inner box opening 37. Permalloy plate 16
Is provided on one side surface of the sliding door frame 38, for example, the holding plate 4
3 are arranged by the above-described fixing method. For example, a product shipped from a factory may be assembled on site while being fixed to the sliding door frame 38 with a brass wood screw in advance.

In this way, first, the inner box 12 whose entire outer peripheral surface is covered with the permalloy plate 16 is formed. next,
As shown in FIG. 15, the outer box floor frame 17 and the four outer box wall frames 1
The outer box formwork 15 of the outer box 11 is formed by 8 and the outer box ceiling frame 19. On each side of the outer box floor frame 17, four outer box wall frames 1
The outer box floor frame 17 and each outer box wall frame 18 are fixed by connecting fittings (not shown). Outer box floor frame 17
The outer box ceiling frame 19 is placed on each outer box wall frame 18 fixed to the above, and the outer box wall frame 18 and the outer box ceiling frame 19 are fixed by connection fittings (not shown). Each outer box wall frame 18
Is fixed to the outer box ceiling frame 19 to form a cubic outer box form 15. An outer case opening 26 that penetrates the outer case wall 18 is formed in one of the outer case walls 18 in advance.

Next, as shown in FIG.
The aluminum plate 24 and the permalloy plate 16 which cover the surface are attached. After the outer box form 15 is formed, an aluminum plate 24 is attached to the entire outer area of the outer box wall frame 18 and the outer box ceiling frame 19 excluding the outer box opening 26. Further, the composite panel 23 is attached to the entire area outside the aluminum plate 24. The attached composite panel 23 is, for example, brass wood screws together with the aluminum plate 24 and the frames 18, 19 respectively.
Fixed to In this manner, the outer surface of the outer box form 15 is placed on the composite panel 2 via the aluminum plate 24.
3 will be covered. Subsequently, the permalloy plates 16 are arranged like the inner box 12 so as to cover the entire outer surface of the composite panel 23.

Next, as shown in FIG.
The outer case sliding door 13 capable of closing the outer case opening 26 is attached. On the outer surface of the outer case 11 corresponding to the outer case opening 26,
The upper rail 28 and the lower rail 29 are attached. Upper rail 2
8 and the lower rail 29 are formed using, for example, an aluminum aggregate with rails prepared as a standard aluminum sash member. When forming the outer box wall frame 18, the aluminum aggregate with rails is assembled in advance in accordance with the rail mounting position.

The sliding door frame 27 of the outer box sliding door 13 is formed to be larger than the outer box opening 26. Permalloy plate 16
Is provided on one side of the sliding door frame 27, for example,
3 in the same manner as above, but similarly to the inner box sliding door 14, the sliding door frame 27 is previously
May be assembled on site at a factory. Further, a decorative plate or the like may be attached to the other side surface of the sliding door frame 27.

In this way, the outer box 11 whose entire outer peripheral surface is covered with the permalloy plate 16 is formed. This allows
The permalloy plate 16 of the outer case 11 and the permalloy plate 16 of the inner case 12 form a magnetic shield space doubly covered. As described above, according to the present embodiment, the inner box 12 covered with the permalloy plate 16 is not made into a double structure by covering both sides of the outer peripheral surface and the inner peripheral surface of the structural frame with the permalloy plate 16. Since a double structure is realized by housing in the outer box 11 covered by the plate 16, all can be formed inexpensively using standard products.

Further, according to the present embodiment, the members can be carried into the site where the magnetically shielded room is installed, and can be assembled at the site. Therefore, the magnetically shielded room can be quickly and inexpensively installed. Can be. Further, the holding plates 43 and 43 'used in the present embodiment are formed with the screw holes 44 deviated to one side from the center of the width in the short direction, so that the holding plates 43 and 43' are arranged vertically. In this state, the permalloy plate 16 can be easily inserted without interfering with the lower holding plate 43 ', and in this way, the holding plates 43, 43' and the composite panel 23 can be inserted.
And the permalloy plate 16 is fixed while being supported downward by the wood screws 45, so that the assembly work can be performed by a small number of people (for example, one person), and the size of the magnetic shield room and the like can be reduced. It is possible to easily respond to a change in shape at the site.

When arranging the permalloy plates 16 in the lateral direction on the side surfaces of the inner and outer boxes, the excess portions are released at the side ends in the direction in which the permalloy plates 16 are arranged, and the permalloy plates 16 are adjusted so as to overlap each other. Permalloy plates of the same shape can be used without being processed on site. A magnetic shield room according to a second embodiment of the present invention will be described with reference to FIGS. FIG.
Shows a permalloy plate in the present embodiment, and FIG. 19 shows a method of fixing the permalloy plate to the inner and outer box side surfaces using the permalloy plate.

In the first embodiment described above, the permalloy plates 16 are sequentially fixed to the inner and outer box side surfaces by using two upper and lower holding plates 43 and 43 '. Permalloy plate 1 without using auxiliary means such as
6 is fixed to the composite panel 23 on the wall frame. The permalloy plate 48 used here has two screw holes 49 horizontally separated at the center thereof and two screw holes 49 'vertically separated with the screw holes 49 interposed therebetween. ing. And this permalloy plate 4
In attaching the composite panel 8 to the composite panel 23 on the wall frame, as shown in FIG. 19, the peripheral parts are fixed to the composite panel 23 via wood screws 45 or the like so as to overlap with each other. By adjusting the height, the required side wall size is achieved.

As described above, according to the present embodiment, the perimeters of adjacent permalloy plates 48 are overlapped and arranged on the side surface, so that one type of permalloy plate 48 can be provided for a wall frame of any size. The entire area can be covered without gaps. Also, the permalloy plate 48 has screw holes 49 and 49 'arranged in a cross shape, and realizes a state of being stably fixed by screwing wood screws into at least two of these screw holes. Can be.

A magnetic shield room according to a third embodiment of the present invention will be described with reference to FIGS. FIG. 20 shows a permalloy plate in the present embodiment, and FIG.
Shows a method of fixing to the inner and outer box side surfaces using a permalloy plate, and FIG. 22 shows a modification of the permalloy plate in the present embodiment. According to the present embodiment, the permalloy plate 60
20A has a plane shape in which two rectangles are overlapped while being deviated in the diagonal direction as shown in FIG. 20A, and as shown in FIG. 20B and FIG. The peripheral portion 60a of the side is deviated in the thickness direction with respect to the central portion 60b. A screw hole 62 is formed at the center. When the permalloy plate 60 is spread, the biased peripheral portion 60a overlaps with the peripheral portions 60c of the other two sides of the adjacent permalloy plate 60.

In attaching the permalloy plate 60 to the composite panel 23 on the wall frame, as shown in FIG. 21, for example, first, the upper left permalloy plate 60 is fixed with a wood screw 64 through the screw hole 62 thereof. I do. Subsequently, the permalloy plate 60 adjacent to the right side is fixed. The permalloy plate 60 is fixed with a wood screw 64 through the screw hole 62 in a state where the perimeter 60c of the permalloy plate 60 to be attached is inserted below the perimeter 60a of the permalloy plate 60 already fixed. Similarly, the permalloy plate 60 is sequentially fixed, and the permalloy plate 60 is spread over the entire wall frame without any gap.

The permalloy plate 60 of this embodiment is
As shown in FIG. 22, two rectangular permalloy plates 63
The a and 63b may be of a shape deviated in the diagonal direction and overlapped with each other. The central portion 60b has a thickness of two sheets, and the adjacent peripheral edges 60a have a thickness of one sheet. A screw hole 62 is formed at the center. Similar to the permalloy plate shown in FIG. 20, the peripheral portion 60a overlaps the peripheral portions of the other two sides of the adjacent permalloy plate 60, and the permalloy plate 60 can be spread over the entire surface as shown in FIG.

As described above, also in the third embodiment of the present invention, the perimeters of the adjacent permalloy plates 60 are arranged side by side so as to overlap with each other. The entire area can be covered without gaps. Also, the permalloy plate 60 of the present embodiment
Is engaged with at least two or more adjacent permalloy plates 60 by its unique shape, so that a more stable fixed state can be realized.

The present invention is not limited to the above embodiment, but can be variously modified. For example, the magnetic shield room is covered with a double magnetic shield material by a permalloy plate of the outer box and a permalloy plate of the inner box, but may be covered by a plurality of outer boxes and covered by a triple or more magnetic shield material. . By covering with a multi-layer magnetic shield material, magnetic shielding can be more effectively performed.

In the above embodiment, the permalloy plate is attached to the composite panel with wood screws. However, the screw holes may be omitted and the composite panel may be attached using an adhesive or the like. In this case, the perforating step after the production of the permalloy plate is eliminated, and the production cost of the shield plate can be reduced.
Further, in the above embodiment, permalloy (μ metal) is used as the magnetic shield material, but other high magnetic permeability materials such as a steel plate, pure iron, a silicon steel plate, and an amorphous magnetic material may be used.

Further, although the magnetically shielded room of the above embodiment is box-shaped, it is not limited to the box-shaped, but may be a magnetically shielded room of another shape.

[0062]

As described above, according to the present invention, a mold for defining a magnetic shield space, and a plurality of magnetic shields of a predetermined area arranged on each surface of the mold with a sufficient gap for the magnetic shield. Since the plate and the fixing means for fixing the plurality of magnetic shield plates to each surface of the formwork are provided, all can be formed inexpensively using standard products.

Further, according to the present invention, a floor frame covered with a magnetic shield material is placed in an installation area where a magnetic shield room is installed, and a wall frame is installed at an edge of the floor frame. A magnetic shield room is assembled by placing and fixing a plurality of magnetic shield plates on each surface without a gap enough to the magnetic shield, and installing a ceiling frame covered with magnetic shield material on a wall frame, The members can be carried into the site where the magnetically shielded room is installed and assembled on the site, and the magnetically shielded room can be quickly and inexpensively installed with a small number of workers.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an appearance of a magnetic shield room according to a first embodiment of the present invention.

FIG. 2 is a diagram showing an internal structure of a magnetic shield room according to the first embodiment of the present invention.

FIG. 3 is a diagram showing an example of a structure of each frame of the magnetic shield room according to the first embodiment of the present invention.

FIG. 4 is a process chart (1) showing a method for assembling the magnetic shield room according to the first embodiment of the present invention.

FIG. 5 is a process diagram (part 2) illustrating the method for assembling the magnetic shield room according to the first embodiment of the present invention.

FIG. 6 is a process diagram (part 3) illustrating the method for assembling the magnetic shield room according to the first embodiment of the present invention.

FIG. 7 is a process chart (part 4) illustrating the method for assembling the magnetic shield room according to the first embodiment of the present invention.

FIG. 8 is a process chart (part 5) showing the method for assembling the magnetic shield room according to the first embodiment of the present invention.

FIG. 9 is a process chart (part 6) illustrating the method for assembling the magnetic shield room according to the first embodiment of the present invention.

FIG. 10 is a plan view of a holding plate constituting the magnetic shield room according to the first embodiment of the present invention.

11 is a partial external perspective view of a magnetic shield room, showing a method of assembling a shield plate using the holding plate of FIG.

FIG. 12 is a partial side view of the magnetic shield room according to the first embodiment of the present invention.

FIG. 13 is an explanatory diagram of a method of attaching a permalloy plate to an outer box wall frame or an inner box wall frame of a magnetically shielded room in which the first embodiment of the present invention is modified.

FIG. 14 is a process chart (part 7) illustrating the method for assembling the magnetic shield room according to the first embodiment of the present invention.

FIG. 15 is a process view (8) showing a method for assembling the magnetic shield room according to the first embodiment of the present invention.

FIG. 16 is a process view (part 9) showing the method for assembling the magnetic shield room according to the first embodiment of the present invention.

FIG. 17 is a process view (10) showing the method for assembling the magnetically shielded room according to the first embodiment of the present invention.

FIG. 18 is a plan view of a magnetic shield plate constituting a magnetic shield room according to a second embodiment of the present invention.

FIG. 19 is a partial side view of a magnetic shield room according to a second embodiment of the present invention using the shield plate of FIG. 18;

FIG. 20 is a diagram illustrating a magnetic shield plate constituting a magnetic shield room according to a third embodiment of the present invention.

FIG. 21 is a partial side view of a magnetic shield room according to a second embodiment of the present invention using the shield plate of FIG. 19;

FIG. 22 is a view showing another example of the magnetic shield plate constituting the magnetic shield room according to the third embodiment of the present invention.

FIG. 23 is an explanatory view in which a part of a conventional magnetic shield room is partially broken.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Magnetic shield room 11 ... Outer box 12 ... Inner box 13 ... Outer box sliding door 14 ... Inner box sliding door 15 ... Outer box formwork 16 ... Permalloy plate 17 ... Outer box floor frame 18 ... Outer box wall frame 19 ... Outer box ceiling Frame 21 ... Floor surface 22 ... Soft rubber sheet 23 ... Composite panel 24 ... Aluminum plate 26 ... Outer box opening 27 ... Sliding door frame 28 ... Upper rail 29 ... Lower rail 30 ... Inner box formwork 31 ... Inner box floor frame 32 ... Inner Box wall frame 33 ... Inner box ceiling frame 34 ... Base 37 ... Inner box opening 38 ... Sliding door frame 39 ... Upper rail 40 ... Lower rail 41 ... Outer box floor 42 ... Inner box floor 43 ... Holding plate 44,49,49 ' ... Screw hole 45 ... Wood screw 47 ... Angle 48 ... Permalloy plate 50 ... Frame 52 ... Aluminum aggregate 60 ... Permalloy plate 60a, 60c ... Peripheral part 60b ... Peripheral part 63a, 63b ... Permalloy plate 62 ... Screw hole 6 ... wood screws 100 ... magnetic shield room 102 ... structural frame 104 ... permalloy plate 106 ... door

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[Procedure amendment]

[Submission date] May 29, 2000 (2005.2
9)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

Claims (12)

[Claims] 1. A mold for defining a magnetic shield space, a plurality of magnetic shield plates of a predetermined area arranged on each surface of the mold without a gap enough for a magnetic shield, and the plurality of magnetic shield plates And a fixing means for fixing to each surface of the formwork. 2. The magnetically shielded room according to claim 1, wherein the fixing means is deviated in a lateral direction from a lateral center of the lateral direction,
A plurality of tightening holes aligned along the longitudinal direction are formed, and a plurality of pressing plates for pressing opposing edges of the magnetic shield plate with respective longitudinal edges, respectively; and A magnetic shield room, comprising: a fastener for fixing a holding plate to each surface of the mold. 3. The magnetic shield room according to claim 1, wherein the plurality of magnetic shield plates are arranged such that their peripheral edges overlap each other, and the fixing means is formed at a central portion of the magnetic shield plate. A magnetic shield room, comprising: a fastener for fixing the magnetic shield plate to each surface of the mold via a fastening hole. 4. The magnetic shield room according to claim 3, wherein the fastening holes formed in the magnetic shield plate include a plurality of holes arranged in parallel with one side of the magnetic shield plate, and a plurality of the holes. A magnetically shielded room comprising a plurality of holes arranged in a direction perpendicular to the direction in which the holes are arranged. 5. The magnetic shield room according to claim 3, wherein the magnetic shield plate has a planar shape in which two rectangles are overlapped so as to be deviated in a diagonal direction of the two rectangles.
The peripheral edge of the side is deviated in the thickness direction with respect to the center, and the plurality of magnetic shield plates are arranged such that the deviated peripheral portion overlaps the peripheral edge of the other two sides of the adjacent magnetic shield plate. A magnetically shielded room that is arranged. 6. The magnetic shield room according to claim 3, wherein the magnetic shield plate is made of two shield plate members that are deviated in a diagonal direction and overlapped with each other, and the plurality of magnetic shield plates are adjacent to each other. A magnetic shield room, wherein two peripheral edges of the adjacent magnetic shield plate overlap with the peripheral edges of the other two adjacent magnetic shield plates. 7. The magnetic shield room according to claim 1, wherein the form includes an inner box form surrounding the magnetic shield space.
An outer box form surrounding the inner box form, wherein the plurality of magnetic shield plates are arranged and fixed on each surface of the inner box form and the outer box form. Room. 8. A first step of placing a floor frame covered with a magnetic shield material in an installation area where a magnetic shield room is to be installed, and a second step of installing a wall frame at an edge of the floor frame. A third step of arranging and fixing a plurality of magnetic shield plates on each surface of the wall frame with a sufficient gap to the magnetic shield, and a ceiling frame covered with a magnetic shield material on the wall frame And a fourth step of installing a magnetically shielded room. 9. The magnetic shield room assembling method according to claim 8, wherein in the third step, a plurality of tightening members are deflected upward in the short direction from the center in the short direction and aligned in the longitudinal direction. A step of temporarily fixing the plurality of holding plates formed with holes in the horizontal direction continuously in the horizontal direction and at a predetermined distance in the vertical direction to the wall frame with a fastener through the fastening holes, After the upper end of the magnetic shield plate having a predetermined area is inserted between the surface of the wall frame and the presser plate from below the presser plate located above, the lower end of the magnetic shield plate is inserted into the lower side of the presser plate. A step of inserting between the surface of the wall frame and the holding plate from above, and tightening the fastener to permanently fix the holding plate to the wall frame, thereby opposing edges of the plurality of magnetic shield plates. Fixing to the wall frame. Assembling method of a magnetic shield room, characterized in that. 10. The method of assembling a magnetic shield room according to claim 8, wherein the third step is a step of arranging magnetic shield plates of a predetermined area so that their peripheral portions overlap each other; Fixing the magnetic shield plate to each surface of the mold using a fastener through a fastening hole formed in a central portion of the magnetic shield room. 11. The method for assembling a magnetic shield room according to claim 10, wherein the magnetic shield plate has a planar shape in which two rectangles are overlapped so as to be deviated in a diagonal direction of the two rectangles.
The peripheral part of the side has a shape deviated in the thickness direction with respect to the center part, and the third step includes the step of displacing the plurality of magnetic shield plates with the magnetic shield plate adjacent to the deviated peripheral part. And a step of fixing the plurality of magnetic shield plates to each surface of the formwork. The method of assembling a magnetic shield room, comprising: 12. The method of assembling a magnetic shield room according to claim 10, wherein the magnetic shield plate is formed of two shield plate members which are deviated in a diagonal direction and are overlapped and joined to each other. Arranging the plurality of magnetic shield plates such that a peripheral edge of two adjacent sides overlaps a peripheral edge of another two sides of the adjacent magnetic shield plates; and A method of assembling a magnetically shielded room.