JP6117491B2 - Electromagnetic shield shutter - Google Patents

Description

  The present invention relates to an electromagnetic shielding shutter used as a means for opening and closing an opening of an electromagnetic shielding chamber.

Conventionally, an electromagnetic shielding door having an electromagnetic shielding function has been used as means for opening and closing the opening of the electromagnetic shielding chamber. However, there is a problem that the electromagnetic shielding door becomes larger as the opening of the electromagnetic shielding chamber becomes larger, and the manufacturing cost increases accordingly.
Therefore, in order to solve such a problem, it has been proposed to shield an electromagnetic wave by installing an electromagnetic shield shutter at the opening of the electromagnetic wave shield room (for example, see Patent Documents 1-4).

However, in the electromagnetic shield shutter described in Patent Documents 1-4, there is a gap between the slats of the shutter curtain and the slats, or there is a gap between the slats and the guide rails and between the seat plate and the floor surface. As a result, there is a problem that it is very difficult to shield electromagnetic waves.
Also, since the surfaces of the slats are usually painted, the slats are electrically insulated from each other, and the required electromagnetic shielding performance can be obtained even if an electromagnetic shielding member is placed between the slats. It was difficult.

JP 2002-155675 A Japanese Patent Laid-Open No. 2002-4746 JP 2001-295562 A Japanese Patent Laid-Open No. 10-18735

  The present invention has been made in view of such a problem, and an object thereof is to provide an electromagnetic shield shutter excellent in electromagnetic wave shielding performance.

In order to solve the above-mentioned problem, the invention of claim 1 is directed to a shutter curtain in which a plurality of slats having an upper long side portion and a lower long side portion are vertically connected, and standing on both left and right sides of the shutter curtain. accommodating a pair of guide rails that are set, and the winding shaft for winding the shutter curtain which is guided in the opening upper part of the electromagnetic wave shielding room by the guide rails, the shutter curtain which is wound up by the take-up shaft A shutter case, and the slat is formed of a stainless steel plate or a galvanized steel plate, and the electromagnetic wave is formed on one of the upper long side portion and the lower long side portion in a connecting portion that connects the slats. When the opening of the shield chamber is closed by the shutter curtain, the upper long side portion in the connecting portion and A radio wave shielding member that is in close contact with the other of the side long sides is provided over the entire width of the slat, and the surface of the slat is a non-painted surface, and the guide rail is in contact with the surface of the slat. A contact shield member that shields between the shutter curtain and the guide rail, the contact shield member is formed of a conductive elastic material, and is closer to the center of the shutter curtain than the contact shield member. It has a shield block which contacts between the surface of the slat and shields between the shutter curtain and the guide rail, and the shield block is formed of a conductive elastic material .

請 Motomeko 2 of the invention, the upper long side portion and the shutter curtain formed by consecutively a plurality of slats vertically with lower long side portions and a pair of guide rails provided upright on right and left sides of the shutter curtain A winding shaft that winds up the shutter curtain guided by the guide rail to the upper part of the opening of the electromagnetic wave shielding chamber, and a shutter case that houses the shutter curtain wound up by the winding shaft, The slat is formed of a stainless steel plate or a galvanized steel plate, and an opening of the electromagnetic shielding chamber is provided on one of the upper long side portion and the lower long side portion in a connecting portion that connects the slats to each other. When closed by the shutter curtain, it is dense with respect to the other of the upper long side portion and the lower long side portion of the connecting portion. A radio wave shielding member is provided over the entire width of the slat, and the surface of the slat is a non-painted surface, and the guide rail contacts the front and back surfaces of the slat, and the shutter curtain and the A sheet-like shield that has a contact shield member that shields between the guide rails, the contact shield member is formed of a conductive elastic material, and the slats shield between the slats in the guide rails The sheet-like shield member is formed of a conductive elastic material, and has a contact shield piece that protrudes from between the slats and contacts the inner surface of the guide rail. And

Invention 請 Motomeko 3, further comprising a shutter lintel forming the insertion opening of the shutter curtain in the lower portion of the shutter case, the shutter lintel is, the shutter curtain and the shutter in contact with the surface of the slat a second contact shield member for shielding between the lintel, characterized in that said second contact shield member is formed of a conductive elastic material.
The invention of claim 4, wherein the shutter curtain has a third contact shield member at its lower end, characterized in that said third contact shield member is formed of a conductive elastic material.

  According to the present invention, it is possible to reliably prevent electromagnetic waves from entering the electromagnetic shielding chamber, thereby enhancing the electromagnetic shielding function of the electromagnetic shielding shutter.

It is a front view of the electromagnetic shielding shutter which concerns on the 1st Embodiment of this invention. It is a figure which shows the AA cross section of FIG. It is a figure which shows the BB cross section of FIG. It is a figure which shows CC cross section of FIG. It is a figure which shows the DD cross section of FIG. It is a figure which shows the EE cross section of FIG. It is a figure which shows the FF cross section of FIG. It is a figure which shows the GG cross section of FIG. It is a figure which shows the principal part of the electromagnetic shielding shutter which concerns on the 2nd Embodiment of this invention. It is a figure which shows the principal part of the electromagnetic shielding shutter which concerns on the 3rd Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to FIGS.
FIG. 1 is a front view of an electromagnetic shield shutter according to the first embodiment of the present invention. 2 is a diagram showing the AA cross section of FIG. 1, FIG. 3 is a diagram showing the BB cross section of FIG. 1, FIG. 4 is a diagram showing the CC cross section of FIG. 1, and FIG. FIG. 6 is a diagram showing the EE cross section of FIG. 1, FIG. 7 is a diagram showing the FF cross section of FIG. 1, and FIG. 8 is a diagram showing the GG cross section of FIG. As shown in FIG. 1, the electromagnetic shield shutter 1 according to the first embodiment of the present invention includes a shutter curtain 2. The shutter curtain 2 closes the opening of the electromagnetic shielding chamber, and is formed by connecting a plurality of slats 3 vertically. These slats 3 are made of a stainless steel plate or a galvanized steel plate, and the surface thereof is a non-painted surface.

  The electromagnetic shield shutter 1 also has guide rails 4 and 5 that guide the shutter curtain 2 in the vertical direction, and a winding shaft that winds the shutter curtain 2 guided to the upper part of the opening of the electromagnetic shielding chamber by the guide rails 4 and 5. 6, a shutter case 7 that houses the shutter curtain 2 wound by the winding shaft 6, and a shutter lintel 8 that forms an insertion opening for the shutter curtain 2 at the lower part of the shutter case 7, 5 is erected on both the left and right sides of the shutter curtain 2.

Further, the electromagnetic shield shutter 1 includes a bottom plate 9 made of a metal plate such as a stainless steel plate. The bottom plate 9 is disposed between the lower ends of the guide rails 4 and 5 so as to come into contact with the lower end of the shutter curtain 2 when the opening of the electromagnetic wave shielding chamber is closed by the shutter curtain 2. It is comprised by the electromagnetic shielding body 22 (refer FIG. 8) which consists of an electroconductive material.
1A shows an electromagnetic shielding shutter when the opening of the electromagnetic shielding chamber is fully closed by the shutter curtain 2, and FIG. 1B shows a part of the shutter curtain 2 wound by the winding shaft 6. It shows an electromagnetic shield shutter when it is pressed.

  As shown in FIG. 2, each slat 3 forming the shutter curtain 2 has connecting portions 3 a and 3 b for connecting the slats to the upper long side portion and the lower long side portion, and the electromagnetic shielding member 10. have. The electromagnetic shield member 10 shields electromagnetic waves from entering and leaking from between the slats 3 and is formed of a metal mesh formed by braiding metal wires such as stainless steel in a net shape. And the electromagnetic shielding member 10 is provided over the surface of the connection part 3a among the connection parts 3a and 3b formed in the upper long side part and the lower long side part of the slat 3 over the substantially full length.

As shown in FIGS. 3 and 4, the guide rails 4 and 5 are formed by bending a metal plate such as a stainless steel plate into a U shape and made of a conductive elastic material such as conductive rubber. Shield members 11 and 12 are provided. These contact shield members 11, 12 are in contact with the surface of the slat 3 to shield between the shutter curtain 2 and the guide rails 4, 5. The contact shield pieces 11 a, 12 a are in contact with the surface of the slat 3. have.
Further, the guide rails 4 and 5 are in contact with the surface of the slat 3 on the center side of the shutter curtain 2 with respect to the contact shield members 11 and 12, and shield blocks 13 and 13 are shielded between the shutter curtain 2 and the guide rails 4 and 5, respectively. 14, these shield blocks 13, 14 are formed of a conductive elastic material such as a conductive rubber like the contact shield members 11, 12.

  Each slat 3 of the shutter curtain 2 has a sheet-like shield member 15 (see FIGS. 3 and 4) on both ends in the width direction. The sheet-like shield member 15 shields between the connecting portions of the slats, and is formed of a conductive elastic material such as conductive rubber, and projects from the slats of the guide rails 4 and 5. It has the contact shield piece 15a (refer FIG. 5) which contacts an inner surface. The sheet-like shield member 15 is provided at both ends in the width direction of the connecting portion 3a so as to come into contact with the connecting portion 3b of the slat 3 when the opening of the electromagnetic wave shielding chamber is closed by the shutter curtain 2.

The shutter curtain 2 has a contact shield member 16 (see FIG. 6) at its lower end. The contact shield member 16 prevents leakage of electromagnetic waves when the lower end portion of the shutter curtain 2 hits the bottom plate 9, and is made of a conductive elastic material such as conductive rubber.
As illustrated in FIG. 7, the shutter lintel 8 includes contact shield members 17 and 18. These contact shield members 17 and 18 are in contact with the surface of the slat 3 to shield the gap between the shutter curtain 2 and the shutter lintel 8, and are formed of a conductive elastic material such as conductive rubber. .

In such an electromagnetic shielding shutter, when the opening of the electromagnetic shielding chamber is closed by the shutter curtain 2, as shown in FIGS. 2 and 8, the electromagnetic shielding member 10 provided in the connecting portion 3a of the slat 3 is connected to the connecting portion 3b. The contact shield member 16 provided at the lower end of the shutter curtain 2 contacts the bottom plate 9 while contacting the surface over the entire width of the slat 3. Accordingly, each slat 3 of the shutter curtain 2 is electrically connected, and the shutter curtain 2 and the bottom plate 9 are electrically connected.
Further, since the contact shield members 11, 12, 17, 18 and the shield blocks 13, 14 are formed of a conductive elastic material, the shutter curtain 2 and the guide rails 4, 5 are electrically connected, The shutter curtain 2 and the contact shield members 17 and 18 are electrically connected.

Therefore, by installing such an electromagnetic shield shutter 1 at the opening of the electromagnetic shielding chamber, it is possible to reliably prevent electromagnetic waves from entering the electromagnetic shielding chamber, so that the electromagnetic shielding function of the electromagnetic shielding shutter can be enhanced. .
In the electromagnetic shielding shutter described above, when the opening of the electromagnetic shielding chamber is closed by the shutter curtain 2, the connecting portions 3b formed on the lower long side portion of the slat 3 are provided on both sides in the width direction of the connecting portion 3a. Since it contacts with the sheet-like shield member 15, it is possible to prevent electromagnetic waves from entering between the inner surfaces of the guide rails 4 and 5 and the electromagnetic shield member 10.

In the first embodiment described above, the case where the electromagnetic shielding member 10 is provided in the connecting portion 3a of the slat 3 is exemplified. However, when the opening of the electromagnetic shielding chamber is closed by the shutter curtain 2, the electromagnetic shielding member 10 is slatted. You may provide in the connection part 3b of the slat 3 so that it may contact 3 connection part 3a.
Moreover, although the case where the sheet-like shield member 15 is provided in the connecting portion 3 a of the slat 3 is illustrated, the sheet-like shield member 15 may be provided in the connecting portion 3 b of the slat 3.

Furthermore, the present invention is not limited to the first embodiment described above. For example, as in the second embodiment shown in FIG. 9, a protrusion 19 projecting toward the lower end of the shutter curtain 2 is provided on the bottom plate 9 over the entire width of the shutter curtain 2, and the protrusion 19 is provided on the protrusion 19. Alternatively, the contact shield member 16 provided at the lower end of 2 may be contacted to shield between the contact shield member 16 and the bottom plate 9.
Further, as in the third embodiment shown in FIG. 10, a conductive elastic body 20 that engages with the contact shield member 16 when the opening of the electromagnetic wave shielding chamber is closed by the shutter curtain 2 may be provided on the bottom plate 9. Good. Further, a conductive mohair 21 that protrudes toward the bottom plate 9 may be provided at the lower end of the shutter curtain 2.

DESCRIPTION OF SYMBOLS 1 ... Electromagnetic shielding shutter 2 ... Shutter curtain 3 ... Slat 3a, 3b ... Connection part 4, 5 ... Guide rail 6 ... Winding shaft 7 ... Shutter case 8 ... Shutter claw 9 ... Bottom plate 10 ... Electromagnetic shielding member 11, 12 ... Contact shield member 11a, 12a ... Contact shield piece 13, 14 ... Shield block 15 ... Sheet-like shield member 15a ... Contact shield piece 16 ... Contact shield member 17, 18 ... Contact shield member 19 ... Projection strip 20 ... Conductive elastic body 21 ... Conductive mohair

Claims (4)

A shutter curtain in which a plurality of slats having an upper long side portion and a lower long side portion are arranged vertically, a pair of guide rails erected on both left and right sides of the shutter curtain, and an electromagnetic wave shield by the guide rails comprising a winding shaft for winding the shutter curtain which is guided in the opening upper part of the chamber, a shutter case for housing the shutter curtain which is wound up by the take-up shaft, and
The slat is formed from a stainless steel plate or a galvanized steel plate,
One of the upper long side portion and the lower long side portion in the connecting portion that connects the slats, the upper long side portion in the connecting portion when the opening of the electromagnetic wave shielding chamber is closed by the shutter curtain, and A radio wave shielding member in close contact with the other of the lower long sides is provided over the entire width of the slat, and the surface of the slat is a non-painted surface
The guide rail is
A contact shield member that contacts each of the front and back surfaces of the slat and shields between the shutter curtain and the guide rail, and the contact shield member is formed of a conductive elastic material ;
The shield block has a shield block that contacts the surface of the slat on the center side of the shutter curtain with respect to the contact shield member and shields between the shutter curtain and the guide rail, and the shield block is made of a conductive elastic material. An electromagnetic shield shutter characterized by being formed . A shutter curtain in which a plurality of slats having an upper long side portion and a lower long side portion are arranged vertically, a pair of guide rails erected on both left and right sides of the shutter curtain, and an electromagnetic wave shield by the guide rails A winding shaft that winds up the shutter curtain guided to the upper part of the opening of the chamber, and a shutter case that houses the shutter curtain wound up by the winding shaft,
The slat is formed from a stainless steel plate or a galvanized steel plate,
One of the upper long side portion and the lower long side portion in the connecting portion that connects the slats, the upper long side portion in the connecting portion when the opening of the electromagnetic wave shielding chamber is closed by the shutter curtain, and A radio wave shielding member in close contact with the other of the lower long sides is provided over the entire width of the slat, and the surface of the slat is a non-painted surface,
The guide rail has a contact shield member that contacts each of the front and back surfaces of the slat and shields between the shutter curtain and the guide rail, and the contact shield member is formed of a conductive elastic material. And
The slat has a sheet-like shield member that shields between the slats in the guide rail, and the sheet-like shield member is formed of a conductive elastic material and protrudes from between the slats. An electromagnetic shield shutter comprising a contact shield piece that contacts an inner surface of the guide rail. A shutter lintel is further provided at a lower portion of the shutter case to form an insertion port for the shutter curtain, and the shutter linus contacts the surface of the slat and shields between the shutter curtain and the shutter lintel . has a second contact shield member, the electromagnetic shielding shutter according to claim 1 or 2, characterized in that said second contact shield member is formed of a conductive elastic material. The shutter curtain has a third contact shield member at its lower end, said third contact claims 1-3 for any one of the shield member is characterized in that it is formed of a conductive elastic material Electromagnetic shield shutter according to item.

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