JP5077673B2 - Electromagnetic shielding door - Google Patents

Description

  The present invention relates to an electromagnetic wave shielding door in which an electromagnetic wave shielding door body and an electromagnetic wave shielding door frame body are conductively connected by an electromagnetic wave shielding material when the electromagnetic wave shielding door body is closed with respect to the electromagnetic wave shielding door frame body.

  Patent Documents 1 to 3 disclose conventional electromagnetic shielding doors. In these patent documents 1 to 3, an electromagnetic wave shielding material (electromagnetic wave shielding material) is provided on the electromagnetic wave shielding door body of the electromagnetic wave shielding door, and the electromagnetic wave shielding door frame body of the electromagnetic wave shielding door has a metal plate or a box-shaped member and conductivity. The contact member (electromagnetic wave shielding material) which consists of a mohair (brush) -shaped electroconductive member which has this is provided. By closing the door body with respect to the door frame body, the electromagnetic wave shielding material is in contact with the mohair-shaped conductive member of the contact member while being buried, thereby conducting conductive connection. In Patent Documents 1 and 2, as shown in the drawings of Patent Documents 1 and 2, the contact member is disposed on the electromagnetic shielding door frame body in the groove portion along the longitudinal direction of each frame provided on the left and right frames. The metal plate is inserted from the longitudinal direction of each frame, and the edge of the metal plate is locked to a locking portion protruding toward the center of the groove portion, and is detachably fixed with screws. In Patent Document 3, a rectangular box-shaped member is detachably screwed to the left and right frames on the electromagnetic shielding door frame body and fixed to the contact member. In Patent Documents 1 to 3, a metal member provided with a groove on the lower end surface portion of the electromagnetic shielding door body is fixed, and a contact member provided with a mohair-like conductive contact member on a long member is attached to the electromagnetic wave in the groove. It is provided so that it can be inserted and removed from the longitudinal direction of the lower side of the shield door body. By closing the door body with respect to the door frame, the mohair-like conductive contact member makes conductive contact with the conductive portion of the electromagnetic shielding door frame. As a result, the electromagnetic shielding door is electromagnetically shielded.

Japanese Patent No. 3573700 JP 2002-106264 A JP 2002-111269 A

  In the ones described in Patent Documents 1 to 3, the contact member is worn out or changes over time as the mohair-like conductive member repeatedly opens and closes the door. It is possible to replace it by providing it as possible. Since the contact member can be inserted and removed from the longitudinal direction of the dovetail groove at the lower end surface portion of the door body, it can be replaced with the electromagnetic shielding door provided in the finishing material (case). When it is provided at the left and right ends of the door frame body, it interferes with the ceiling and floor surface. Therefore, the door body and the door frame body must be removed and replaced, and there is a problem that they cannot be replaced quickly and easily. Similarly, in the configuration in which the contact member is inserted into the groove portion and screwed as in Patent Documents 1 and 2, the edge portion of the contact member is removed in the door opening / closing direction of the door body and the door frame body by the locking portion of the groove portion. Therefore, it has to be pulled out along the longitudinal direction of the groove, and there is a problem that when the contact member is replaced, it can interfere with the ceiling or floor surface and cannot be replaced quickly and easily. In Patent Document 3, the contact member is screwed. However, if the contact member is long along the door main body or the door frame body, the back surface of the contact member and the door frame body face each other due to the tightening force of the screws. Although it is in contact, there is a possibility that non-contact part exists in the part between screws due to processing accuracy, and there is a possibility that surface contact is not even over the entire length, there is a possibility that the electromagnetic wave shielding performance is not sufficiently exhibited because the contact area is small . Further, in Patent Documents 1 to 3, since the contact member is screwed, a screw hole must be drilled in each contact member including the replacement member, resulting in a problem that the number of processing is increased and labor is required. .

Therefore, the present invention has been made in view of the above problems, and can replace the electromagnetic wave shielding material quickly and easily, and contact the electromagnetic wave shielding material and the electromagnetic wave shielding door frame body evenly over the entire length. Thus, an electromagnetic shielding door that can sufficiently exhibit electromagnetic shielding is provided.

To achieve the above object, a first aspect of the present invention, openably provided an electromagnetic wave shielding door body with an electromagnetic wave shielding door frame, door electromagnetic wave shielding door body in a closed state of the electromagnetic wave shielding door body Contact between the electromagnetic shielding material provided at the front edge, the suspension edge, and the upper edge and the electromagnetic shielding material provided at the door edge frame, suspension edge frame, and upper frame of the electromagnetic shielding door frame body In the electromagnetic shielding door that is electrically conductively connected , the electromagnetic shielding material of the electromagnetic shielding door frame is fixed to the front and back surfaces of the conductive plate material, and the plate material is attached to the electromagnetic shielding door body. In an opened state, the electromagnetic wave shielding door body and the electromagnetic wave shielding door frame are attached to a storage recess having a width greater than the width of the plate material provided on the opposing surface and a depth greater than the thickness of the plate material, One edge of the plate material is placed in the storage recess. Mounting member comprising a retaining member for locking the other edge of the case can fit portion and the plate is provided, the plate material to allow installation and removal the door opening-closing direction by the mounting member, the mounting state to the housing recess The plate material is conductively connected to the electromagnetic shielding door frame through the electromagnetic shielding material on the back surface of the plate material.

According to the second aspect of the present invention, the electromagnetic wave shielding material fixed to the front surface and the back surface of the plate material is a conductive mohair material, and the conductive mohair material on the back surface of the plate material is attached to the housing recess. The hair length is longer than the distance between the bottom surface and the back surface of the plate material, and the conductive mohair material is pressed against the electromagnetic shielding door frame .

In the invention of claim 1 of the present application, the electromagnetic wave shielding material of the electromagnetic wave shielding door frame is fixed to the front and back surfaces of the conductive plate material. Mounted in a storage recess having a width greater than the width of the plate material provided on the opposing surface of the door body and the electromagnetic shielding door frame and having a depth greater than the thickness of the plate material. A mounting member is provided that includes a fitting portion that can be fitted to one edge of the plate and a retaining member that locks the other edge of the plate. The mounting member can be used to attach and remove the plate material in the door opening / closing direction. , the plate member in an attached state in the housing recess through the electromagnetic wave shielding material of the back plate member, electromagnetic since so as to conductively connected to the electromagnetic wave shielding door frame, together with the plate material when replacing an electromagnetic wave shielding material Since it attached detached from the surface facing shielding door frame, it can be done easily and quickly to exchange the plate member and an electromagnetic wave shielding material in bulk without interfering with the ceiling and the floor. Moreover, after removing the electromagnetic shielding material together with the plate material from the electromagnetic shielding door frame, the electromagnetic shielding material is removed from the plate material, and a new electromagnetic shielding material may be provided, so the plate material can be reused. In addition, since the electromagnetic shielding material can be replaced later at a location different from the location where the door is installed, it is not necessary to replace the electromagnetic shielding material on the spot when replacing from the electromagnetic shielding door. It is not necessary and preferable. In addition, since the electromagnetic shielding material is provided on both the front and back surfaces of the plate material, the plate material and the electromagnetic shielding door main body or electromagnetic wave shielding are better contacted than the plate material provided directly on the electromagnetic shielding door main body or electromagnetic shielding door frame. The electromagnetic wave shielding performance between the door frame and the door frame body is also improved.

Further, in the invention of claim 2 of the present application, the electromagnetic wave shielding material fixed to the front and back surfaces of the plate material is a conductive mohair material, and the conductive mohair material on the back surface of the plate material has a concave portion for storing the plate material. Since the hair length is longer than the distance between the bottom surface and the back surface of the plate material when attached to the plate, the conductive mohair material is pressed against the electromagnetic shielding door frame, so the plate material When the mohair material is deformed by the urging, the mohair material uniformly contacts the electromagnetic wave shielding door frame over the entire length of the plate material, and the contact area becomes larger and the electromagnetic wave shielding performance can be improved.

  Next, an embodiment of the present invention will be described with reference to FIGS. The electromagnetic shielding door 1 includes an electromagnetic shielding door body 2 and an electromagnetic shielding door frame 3. The electromagnetic shielding door body 2 is hinged so as to be openable and closable with respect to the electromagnetic shielding door frame body 3 by a hinge 4 provided between the electromagnetic shielding door body 2 and the suspending side of the electromagnetic shielding door frame body 3. . The electromagnetic shielding door frame 3 is made of a steel frame 5, a door end side frame 6, a door end side frame 6, an upper frame 7, and a hull 8 as a lower frame. The electromagnetic shielding door frame 3 is attached to the opening of the finishing material 42.

  The electromagnetic shielding door body 2 is configured by providing a plurality of force bones (not shown) at equal intervals inside the steel surface plates 9. As shown in FIGS. 2 and 3, the electromagnetic shielding door body 2 has a door body side mounting member 13 made of aluminum screwed to a door end side edge portion 10, a suspension side edge portion 11, and an upper edge portion 12. ing. The door main body side mounting member 13 includes a door main body side engaging groove portion 16 to which the electromagnetic wave absorbing material 15 is engaged at an outer peripheral side position of the electromagnetic wave shielding door main body 2, and a door at an inner peripheral side position from the door main body side engaging groove portion 16. A plurality of rectangular concavo-convex portions 17 provided along the longitudinal direction of the main body side mounting member 13 are formed. The plurality of quadrangular irregularities 17 serve as an electromagnetic shielding material for the electromagnetic shielding door body 2. The electromagnetic wave absorber 15 fixed to the door main body side engaging groove 16 is made of, for example, ferrite.

  Further, as shown in FIG. 3, the electromagnetic shielding door main body 2 has a lower door body side mounting member 19 that is screwed to the lower edge 18 so as to face the huller 8. The lower door main body side mounting member 19 has the same inclination as the door main body side engaging groove portion 16 in which the electromagnetic wave absorbing material 15 is engaged with the outer peripheral side position of the electromagnetic wave shielding door main body 2 and the inclined surface 20 of the huller 8, and will be described later. A storage groove portion 24 having engagement portions 23 that engage with the edge portions 22 on both sides of the plate material 21 is formed.

  As shown in FIGS. 2 and 3, the suspending side side sill frame 5, the door end side sill frame 6, and the upper frame 7 of the electromagnetic shielding door frame body 3 are provided on a surface 27 facing the electromagnetic shielding door body 2. Each door frame body side mounting member 25 made of aluminum is screwed so as to face the door body side mounting member 13 when the electromagnetic shielding door body 2 is closed. The door frame body side mounting member 25 has a door frame body side engaging groove portion 26 formed at an outer peripheral side position, and the electromagnetic wave absorbing material 15 is fixed thereto. As shown in FIGS. 2 and 3, the door frame body side engaging groove portion 26 and the door main body side engaging groove portion 16 are configured so that the electromagnetic wave absorbing material 15 of the door frame body side engaging groove portion 26 is formed of the door main body side engaging groove portion 16. The electromagnetic wave absorber 15 is slightly displaced in the door outer peripheral direction, and non-facing portions that do not face each other are formed. The electromagnetic wave absorber 15 facing the electromagnetic wave shielding door body 2 and the electromagnetic wave absorbing material 15 on the electromagnetic wave shielding door frame 3 side absorb and attenuate the electromagnetic wave while reflecting each other.

  The door frame side mounting member 25 is provided with a storage recess 31 for mounting and detachably mounting the conductive plate material 21 at an inner peripheral side position. The plate material 21 is made of, for example, a metal plate, and an electromagnetic wave shielding material 28 is fixed to the front surface 29 and the back surface 30. As shown in FIG. 5, the storage recess 31 has a width B larger than the width A of the plate material 21 and a depth D larger than the thickness C of the plate material 21. As shown in FIGS. 4 and 5, a locking portion 34 that protrudes from one side wall 32 toward the other side wall 33 is provided on one side wall 32 side of the storage recess 31, and one edge portion 22 of the plate material 21 is provided. The fitting part 35 which can fit is provided. On the other side wall 33 side of the housing recess 31, one edge 22 is engaged with the other edge 22 of the plate material 21 fitted in the fitting portion 35, and the plate material 21 is pulled out into the housing recess 31. A retaining member 36 to be secured is screwed by a mounting bolt (screw) 37 so as to be detachable. The retaining member 36 and the fitting portion 35 constitute a mounting member 38. The housing recess 31 opens in the door opening / closing direction with respect to the surface 27 of the electromagnetic shielding door frame 3 facing the electromagnetic shielding door body 2. That is, the storage recess 31 opens in a facing direction with respect to a facing surface between the electromagnetic shielding door body 2 and the electromagnetic shielding door frame 3 when the electromagnetic shielding door body 2 is closed. In a state in which the electromagnetic shielding door body 2 is opened, the retaining member 36 is in a direction toward the near side of the surface 27 facing the electromagnetic shielding door body 2 of the electromagnetic shielding door frame 3 in the door opening / closing direction, that is, perpendicular to the facing direction. It can be installed and removed. With the retaining member 36 removed, the plate member 21 can be attached to and detached from the housing recess 31 in the front side direction of the electromagnetic shielding door frame 3.

  The electromagnetic wave shielding material 28 fixed to the plate material 21 is a conductive mohair material, and the conductive mohair material 28 is used to fix the conductive metal filler, the metal film, etc., the resin fiber, and the plate material 21. And a conductive adhesive layer. As shown in FIGS. 4 and 5, the conductive mohair material 28 fixed to the back surface 30 of the plate material 21 includes the bottom surface 39 of the storage recess 31 and the plate material when the plate material 21 is mounted in the storage recess 31. The hair foot length F is longer than the distance E between the back surface 30 of 21. Therefore, the plate material 21 is in contact with the bottom surface 39 evenly over the entire length by bending the conductive mohair material 28 in the attached state, thereby increasing the contact area with the storage recess 31. Thus, since the plate material 21 and the electromagnetic wave shielding door frame 3 are conductively connected by the conductive mohair material 28, the electromagnetic wave shielding performance is improved. Further, due to the restoring force (elasticity) of the conductive mohair material 28 on the back surface 30 of the plate material, the plate material 21 is fixed to the storage recess 31 even if the mounting member 38 and the storage recess 31 are not processed with high precision. Is done. The plate material 21 provided with the conductive mohair material 28 is also detachably attached to the storage groove 24 of the lower edge 18 of the electromagnetic shielding door body 2. Reference numeral 40 denotes a door operation unit provided with a door knob and a lock.

  When the electromagnetic shielding door main body 2 is closed, the conductive mohair material 28 on the plate material surface 29 of the hanging side side frame 5, the door end side side frame 6, and the upper frame 7 is formed on the rectangular uneven portion 17 of the door body side mounting member 13. , The conductive mohair material 28 on the plate material surface 29 attached to the lower edge 18 of the electromagnetic shielding door body 2 is in pressure contact with the hull 8, and the electromagnetic shielding door body 2 and the electromagnetic shielding door frame 3 are brought into contact with each other. Conductive connection is made to shield electromagnetic waves. When the conductive mohair material 28 on the plate material surface 29 is in pressure contact with the rectangular concavo-convex portion 17, the contact area is increased and the electromagnetic wave shielding performance is improved.

  When the conductive mohair material 28 provided on the electromagnetic shielding door frame 3 deteriorates due to repeated opening / closing operations of the electromagnetic shielding door main body 2, the conductive mohair material 28 needs to be replaced because the electromagnetic shielding performance is deteriorated. . When the conductive mohair material 28 is replaced, first, the electromagnetic shielding door body 2 is opened. In the opened state, the mounting bolt 37 to which the retaining member 36 is screwed is removed, and the retaining member 36 is removed from the housing recess 31 in the front side direction of the electromagnetic wave shielding door frame 3 in the door opening / closing direction. Then, one edge portion 22 of the plate material 21 is extracted from the fitting portion 35, and the plate material 21 is removed toward the near side of the electromagnetic shielding door frame 3. Next, one edge portion 22 of the plate material 21 to which a new conductive mohair material 28 prepared in advance is attached is fitted to the fitting portion 35 of the housing recess 31 in front of the electromagnetic shielding door frame 3 in the door opening / closing direction. The retaining member 36 is engaged with the other edge 22 of the plate material 21 and is secured to the storage recess 31 by screwing. In addition, the plate material 21 stored in the storage groove 24 of the lower edge 18 of the electromagnetic shielding door body 2 is replaced by being inserted and removed from the door end direction.

  Thereby, the plate material 21 to which the conductive mohair material 28 of the electromagnetic wave shielding door 1 is fixed can be easily replaced with a new one without interfering with the ceiling or the like. Further, since the conductive mohair material 28 can be exchanged together with the plate material 21, it can be quickly performed. The plate material 21 to which the replaced conductive mohair material 28 is fixed is peeled off from the deteriorated conductive mohair material 28 and replaced with a new conductive mohair material 28 for reuse. The conductive mohair material 28 is provided as an electromagnetic wave shielding material on the back surface 30 of the plate material 21 that is detachably mounted in the door opening / closing direction of the electromagnetic wave shielding door body 2 or the electromagnetic wave shielding door frame 3. Metal mesh wound rubber, contact fingers, metal wool, conductive rubber, or the like can also be used. Moreover, you may make it provide the plate material which provided the conductive mohair material in the surface and the back surface in the door main body side mounting member of an electromagnetic wave shielding door main body. The electromagnetic shielding door may be a sliding door.

It is a front view of the electromagnetic wave shielding door of the present invention. It is the II-II sectional view taken on the line of FIG. It is the III-III sectional view taken on the line of FIG. It is explanatory drawing which shows the state which closed the electromagnetic shielding door main body with respect to the electromagnetic shielding door frame. It is explanatory drawing which shows the state which removed the plate material from the electromagnetic shielding door frame.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electromagnetic shielding door 2 Electromagnetic shielding door main body 3 Electromagnetic shielding door frame 17 Square-shaped uneven part (electromagnetic shielding material)
21 Plate material 22 Edge 27 Opposite surface 28 Conductive mohair material (electromagnetic wave shielding material)
29 surface of plate material 30 back surface of plate material 31 storage recess 32, 33 side wall 34 locking portion 35 fitting portion 36 retaining member 38 mounting member A lateral width of plate material B lateral width of storage recess C thickness of plate material D storage recess Depth of

Claims (2)

The electromagnetic shielding door body is provided so as to be openable and closable with respect to the electromagnetic shielding door frame, and is provided at the door edge side edge, the suspension edge side edge, and the upper edge portion of the electromagnetic shielding door body with the electromagnetic shielding door body closed. door end side vertical frame of the electromagnetic wave shielding material and an electromagnetic wave shielding door frame, Tsumoto side vertical frame, by contacting the electromagnetic wave shielding material provided in the upper frame in the electromagnetic shielding door which is adapted to electrically conductively connected, electromagnetic waves The electromagnetic shielding material of the shielding door frame is fixed to the front and back surfaces of the conductive plate material , and the plate material is opened between the electromagnetic shielding door body and the electromagnetic shielding door frame with the electromagnetic shielding door body opened. Mounted in a storage recess having a width greater than the width of the plate material provided on the opposing surface and a depth greater than the thickness of the plate material, and one edge of the plate material can be fitted into the storage recess Pull out to lock the fitting and the other edge of the plate Is mounting member comprising a stopper member provided to the plate material to allow installation and removal the door opening-closing direction by the mounting member, the plate member in an attached state in the housing recess through the electromagnetic wave shielding material of the back plate member, electromagnetic wave shielding door frame An electromagnetic shielding door characterized in that it is conductively connected to the body. The electromagnetic wave shielding material fixed to the surface and the back surface of the plate material is a conductive mohair material. The conductive mohair material on the back surface of the plate material is the bottom surface and the plate material in a state where the plate material is mounted in the storage recess. 2. The electromagnetic wave shielding door according to claim 1 , wherein the length of the hair leg is longer than the distance between the back surface and the conductive mohair material is in pressure contact with the electromagnetic wave shielding door frame.

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