JP2567772B2 - Structure of the joint part of the simplified electromagnetic shield drum - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a joint portion of a simple electromagnetic shield drum.

[0002]

2. Description of the Related Art In recent years, the influence of external radio waves on electronic devices such as electronic computers has become a problem, and various work rooms having an electromagnetic shield function have been developed to block such influences. There is. As a shield material for such an electromagnetic shield room, a copper foil, a copper plate or an iron plate is used, and a joint portion of these shield materials is soldered in a conventional method, and in the prefabricated method, the shield material is used. It used a metal panel that integrated the.

FIGS. 5 and 6 show a conventional joining structure of metal panels. In FIG. 5, end portions of a metal panel 3 in which a shield material 2 such as an iron plate is integrated with both sides of a plywood 1 are shown. Is clamped from both sides by the metal 4 and the pressing member 5, and fixed by the screw 6.

Further, in FIG. 6, metal panels 8 in which a plywood 1 and a shield material 2 such as an outer iron plate are integrated are arranged on both sides of an insulator 7 such as wood, and screws 6 are provided from the outside. Both metal panels 8 are fixed to the insulator 7.

[0005]

However, when using the above-mentioned metal plates such as copper foil, copper plate, and iron plate, the inside of the electromagnetic shield drum is closed because these metal plates have no transparency. There was a problem that it became a space.

Further, as described above, in the method of screwing the shield material, there is a problem that the material bends at the screwing point,
In order to prevent the deterioration of the shield performance due to the leakage of electromagnetic waves from the gap in the middle part between the screws, the screw interval has to be reduced to about 5 cm, and a great deal of time and effort is required to construct the joint part.

Further, there has been a problem that the shield material may be deformed due to stress such as an earthquake to form a gap. Further, when the joint portion is fixed with a screw, a large number of screws are exposed on the finished surface, and there is a problem that the appearance is impaired.

[0008] On the other hand, a means of using a wire mesh as a shield material has been proposed in order to provide transparency in the electromagnetic shield drum, but in this case, the wire mesh is easily deformed, and the wire mesh is temporarily fixed during construction. Therefore, there is a problem that it takes time and effort. In addition, if the tension of the wire net is not sufficient, there is a problem that the finishing material is loosened and the appearance is spoiled. It is an object of the present invention to provide a simple structure of a joint portion of an electromagnetic shield room for general industries, which can solve the conventional problems.

[0009]

To achieve the above object, in the structure of the joint portion of the simplified electromagnetic shield according to the present invention, the indoor surface of the frame disposed at a predetermined position. Insulating packing material is placed on the wire mesh material, and the wire mesh material is placed in a tension state by fitting the ends of the wire mesh material into the fitting grooves formed in the corresponding pair of frame materials. The frame is screwed to the frame through a packing material, and the tips of the pair of wire mesh members are extended toward the center of the joint to be superposed by a predetermined size and abutted on the superposed portion. A presser foot having a protrusion is abutted from the inside of the room to screw it to the frame through the overlapping portion of the pair of wire netting materials and the insulating packing material, and the presser foot from the inside of the room is covered with makeup. It is characterized by being covered with.

The frame is preferably made of an aluminum mold material, and the insulating packing material is preferably made of resin. Further, the wire mesh material is fitted into a frame material formed by mutually assembling a pair of vertical frame material, upper frame material and lower frame material, and the vicinity of the end is fitted into the fitting groove so that the tip end extends outward. It is desirable in construction that the unit element is pre-mounted in the assembled state to form the unit element. Further, it is desirable that the decorative packing material is inserted into the fitting groove after the wire mesh material is fitted.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. 1 to 3 show an embodiment of the present invention, in which 10 is a simplified electromagnetic shield drum according to the present embodiment. This simple electromagnetic shield machine 10
Generally, a structure is formed by a pillar frame and a beam frame made of metal, and a wall material, a floor material, and a ceiling material are joined to the structure. In this embodiment, the wire mesh material 11 is used as the wall material.

Further, as shown in FIG. 2, in this embodiment, a frame member 15 in which a pair of vertical frame members 12, an upper frame member 13 and a lower frame member 14 are assembled together is preliminarily used in a factory or the like. The wire mesh material 11 is attached to form a unit element E.

As shown in FIG. 3, the vertical frame member 12 has a fitting groove 16 formed continuously at one end in the longitudinal direction and a thin mounting portion 17 formed at the other end. 13 and the lower frame member 14 have the same structure. The wire mesh material 11 is kept in a tension state without slack by fitting the vicinity of the end along the fitting groove 15 of each of the frame materials 12, 13, and 14. The frame members 12, 13, and 14 are assumed to be rigid enough to sufficiently tension the wire mesh member 11. Furthermore, after fitting the wire mesh material 11 into the fitting groove 15, the fitting groove 1
If a decorative packing material (not shown) having a shape conforming to No. 5 is fitted and inserted, the wire mesh material 11 is prevented from loosening and the appearance is improved. In addition, the four-circumferential end portions of the wire mesh material 11 are attached in advance in a state of being extended outward from each frame material by a predetermined dimension. Therefore, in the field, the pillar frame and the beam frame are
Each unit element E may be attached to a structure composed of a frame.

As shown in FIG. 4 which is a sectional view taken along the line AA of FIG. 1 and FIG. 3 which is an exploded explanatory view thereof, the following structure is formed at the joints between the unit elements E as wall materials. There is. That is, first, the insulating packing material 19 is arranged on the indoor side surface (lower surface in the figure) of the pillar frame 18 made of an aluminum mold material arranged at a predetermined position to separate the pillar frame 18 and the wire mesh material 11. Electrically separate. In this embodiment, the packing material 19 is made of resin.

Next, the mounting portions 17 of the vertical frame members 12 of the pair of unit elements E are fixed to the frame 18 with screws 20 via the insulating packing material 19. At this time, since the total width dimension of the pair of mounting portions 17, 17 is set to be smaller than the width dimension of the column frame 18 by a predetermined dimension, the pair of wire mesh members 11, 11 is located at the center of the joint portion. Are in a state where they are mutually polymerized by a predetermined size. in this way,
The extension dimension from the frame member 12 is set to about 10 cm to 20 cm so that the tip portions of the wire mesh material 11 are overlapped with each other by a predetermined dimension.

After that, the presser foot 21 is abutted and fixed to the overlapping portion from the inside of the room. In this presser foot 21, a pair of projections 22 that abut against the overlapping portion of the wire mesh material 11 and press the overlapping portion are integrally formed so as to project from a flat plate-like main body portion 23, and have a predetermined section modulus. Is set to. Therefore, the presser metal member 21 is brought into contact with the inside of the room, and the overlapping portion of the pair of wire mesh members 11, 11 and the insulating packing material 1
It is fixed to the pillar frame 18 with screws 24 via 9.

Finally, the presser foot 21 is covered with a makeup cover 25 from the indoor side. Hook portions 26 are formed on both ends of the makeup cover 25 in the width direction.
When the work piece 21 is hooked and fixed to both ends of the presser foot 21, the joint part including the screws 20 and 24 is covered up.

In this embodiment constructed as described above, since the wire mesh material 11 is used as the wall material, the transparency is ensured and the internal condition can be easily grasped from the outside.

Further, the frame material 15 is preliminarily used in a factory or the like.
Unit element E in which the wire mesh material 11 is attached to the
Since it is manufactured, since it is only necessary to join the unit elements E to each other on site, the construction is easy and the construction is improved. Furthermore, since the tension of the wire mesh material 11 can be managed at the time of factory production, there is less risk that the wire mesh material 11 will loosen after construction and spoil the appearance.

In addition, even if the wire mesh material bends at the screw fastening point,
Since the underlying insulating packing material 19 is elastically deformed and a uniform tightening force is applied to the wire mesh material 11 while maintaining the compressive force, a gap is unlikely to be formed for a long period of time.

Further, since the presser foot 21 has the projections 22 formed therein, it has a larger section modulus than a strip-shaped plate and the like, and the deformation between the fixing points is small, so that the fixing interval can be set large. Furthermore, since the wire mesh material 11 is pressed by the protrusions 22, the compressive force is concentrated on the tip, and a close contact is obtained. Moreover, since the cosmetic cover 25 covers the screws and the like, it does not impair the aesthetic appearance as in the conventional case.

In the above embodiment, the unit element E was produced in advance and joined to each other. However, the present invention is not limited to this, and the wire mesh material 11 may be used on site depending on the conditions. You may make it attach a frame material to it. Further, the frame may be made of a material other than an aluminum mold material, and the insulating packing material is not limited to a resin material. It goes without saying that various modifications can be made without departing from the scope of the present invention. Yes.

[0023]

The present invention is constructed as described above,
The following effects can be achieved. (1) Since the wire mesh material is used as the shield material, the transparency is secured and the internal condition can be easily grasped from the outside. (2) Even if the wire mesh material bends at the place where it is screwed, the underlying insulating packing material is elastically deformed, and a uniform tightening force is applied to the wire mesh material while maintaining the compressive force. It is unlikely to occur and can effectively prevent leakage of electromagnetic waves. (3) Since the presser foot is formed with the protrusions, the fixing interval can be set large, and since the wire mesh material is pressed by the protrusions, close contact can be obtained. (4) Since the cosmetic cover covers the screws and the like, it is possible to prevent the appearance from being spoiled. (5) When the unit element E is used, since it is only necessary to join the unit elements E to each other on site, the construction is easy and the workability is improved, and the tension of the wire mesh material can be managed at the time of factory production. Since it can be done, there is less risk that the wire mesh material will loosen after construction and spoil the appearance.

[Brief description of drawings]

FIG. 1 is a perspective view showing a schematic configuration of an electromagnetic shield drum according to an embodiment of the present invention.

FIG. 2 is a conceptual diagram showing a configuration of a unit element.

FIG. 3 is a development explanatory view showing a structure of a joint portion.

FIG. 4 is a cross-sectional view taken along the line AA of FIG.

FIG. 5 is a cross-sectional view of an essential part showing the structure of a conventional joint part.

FIG. 6 is a cross-sectional view of an essential part showing the structure of a conventional joint part.

[Explanation of symbols]

 10 Simple Electromagnetic Seal Drum 11 Wire Mesh Material 12, 13, 14 Frame Material E Unit Element 16 Fitting Groove 17 Mounting Part 18 Frame 19 Insulating Packing Material 20 Screw 21 Pressing Metal Product 22 Projection Part 24 Screw 25 Decorative Cover −

Claims (5)

(57) [Claims] 1. An insulating packing material is arranged on the indoor side surface of a frame arranged at a predetermined position, and the vicinity of the end portions of a pair of wire mesh materials is fitted into a fitting groove formed in a corresponding pair of frame materials. By fitting the wire mesh members into a tensioned state, the pair of frame members are screwed to the frame through the insulating packing material, and the tips of the pair of wire mesh members are extended toward the center of the joint. Then, they are overlapped with each other by a predetermined dimension, and a presser foot having a protrusion that abuts the overlapped portion is abutted from the inside of the room to interpose the overlapped portion of the pair of wire mesh materials and the insulating packing material. A structure of a joint portion of a simple type electromagnetic shield, wherein the frame is fixed with a screw and the presser foot is covered with a decorative cover from the indoor side. 2. The structure of a joint portion of a simplified electromagnetic shield drum according to claim 1, wherein the frame is formed of an aluminum mold material. 3. The structure of a joint portion of a simplified electromagnetic shield drum according to claim 1, wherein the insulating packing material is made of resin. 4. The wire mesh material is fitted to a frame material formed by mutually assembling a pair of vertical frame members, an upper frame member and a lower frame member, and the fitting groove is fitted in the vicinity of an end portion thereof, and the tip end portion thereof is outside. 2. The structure of the joint portion of the simplified electromagnetic shield drum according to claim 1, wherein the unit element is formed by pre-attaching in a state of being extended in one direction. 5. A simplified electromagnetic shield according to claim 1, wherein a decorative packing material is fitted into said fitting groove after fitting said wire mesh material.
The structure of the Rudolm joint.