JP2008057141A - Electromagnetic-wave shielding door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure the electromagnetic-wave shielding property of the whole periphery of a door, and to fix an opening/closing handle during the movement of the door. <P>SOLUTION: The door 20 is equipped with two direction changing levers 54 and 74. During the movement, the turning of the upside direction changing lever 74 is locked by a seesaw member 88, and the handle 55 is fixed. When the door 20 reaches a position immediately before closing, the door end side of the seesaw member 88 is pushed downward by a fixed piece 98, and the direction changing lever 74 is unlocked so that the handle 55 can be turned. Additionally, when the handle 55 is pulled in a closing direction, dead bolts 132 and 134 are pushed out up and down by a horizontal slider 114, and the door 20 is pushed forward so that shield gaskets 166 and 170 can be brought into close contact with a door frame 12. Upper and lower gasket holders 218 and 252 are pushed out up and down by a horizontal slider 116, so that shield gaskets 224 and 254 can be brought into close contact with the door frame 12. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an electromagnetic shielding door (door) that prevents electromagnetic waves from entering and leaking from an opening.

The electromagnetic shielding room uses an electromagnetic shielding material on the ceiling, floor, wall surface, etc., and is configured so that electromagnetic waves do not leak or enter. Such an electromagnetic shielding room is provided with an entrance / exit for the passage of people and the loading / unloading of equipment, and a door or door for opening / closing the entrance / exit is attached with an electromagnetic shielding function. It has been. A conventional shield door is mainly a hinged door type (swing type) that can be freely opened and closed by a hinge. An electromagnetic wave shielding gasket is provided around the door to prevent leakage and intrusion of electromagnetic waves. As such a hinged door type, there are technologies shown in Patent Documents 1 and 2 below.
JP-A-11-145684 JP 11-274790 A

  By the way, although the above-mentioned hinged door can achieve a sufficient electromagnetic wave shielding function, the door body is heavy and may be somewhat difficult to open and close for women or elderly people. In addition, inconvenience also arises in terms of effective use of space and automation of opening and closing, so that there is an increasing demand for sliding doors that slide along the doorway. Also in the case of the sliding door type (sliding type), an electromagnetic wave shielding gasket is provided around the door to prevent leakage and intrusion of electromagnetic waves.

  The sliding door type door described above can eliminate dead space when opening and closing the door compared to the hinged door type, but it is difficult to make a structure that presses the door frame around the entire periphery of the door like a hinged door, In terms of electromagnetic shielding, the performance is inferior. In particular, in the case of the self-weight type, there is an inconvenience that a gap is easily formed around the door, the gasket material cannot be uniformly pressurized over the entire periphery of the door, and the applied pressure is insufficient.

  The present invention focuses on the above points, and an object of the present invention is to provide a sliding door type electromagnetic shielding door capable of ensuring uniform electromagnetic shielding properties around the door when closed. Another object is to fix a handle for opening / closing operation while opening / closing the manual door.

  In order to achieve the above object, the present invention is an electromagnetic wave shield door attached to a door frame provided in an opening, and panels are provided on both sides of a frame having a predetermined thickness, and the whole can be electromagnetic wave shielded. A door mechanism, a sliding mechanism for moving the door body in the opening and closing direction, a vertical shield gasket material provided along a door tip and a door butt of the door body, provided on the door frame side, When the door body is closed, the door frame side vertical shield body, which can be in close contact with the door shield side vertical shield gasket material, has substantially the same width as the door body, and is parallel to the upper and lower ends of the door body. A horizontal shield body which is arranged in the vertical direction and is slidable in the vertical direction and can be shielded from an opposing door frame, the door body is pushed in the closing direction, and the door tip The vertical shield gasket material is closely attached to the opposing door frame, and the door end side pushing mechanism for maintaining the closed state of the door is provided between the panels, and the horizontal movement is converted into the vertical direction. An extruding mechanism for transmitting the horizontal shield body and the door end side pushing mechanism to operate them, and a trigger mechanism for operating the extruding mechanism when the door body is at a predetermined close position; It is characterized by that.

  One of the main forms is that the trigger mechanism is arranged on the upper end door end side of the door body, has a roller at the end on the door bottom side, and has an inclination on the upper end portion on the door tip side, A seesaw member that is swingable about a rotation shaft at a substantially central portion and is supported in an unbalanced manner so that when the external force in the vertical direction is not applied, the roller side is lowered and the inclined side protrudes upward from the door body The first direction changing member, which is formed in a substantially L-shape that can be rotated together with the rotating shaft that passes through the bent portion, and whose tip of one arm can contact the roller of the seesaw member, It is fixed in the vicinity of the door end, and has a slope on the lower end surface having a slope similar to the slope of the seesaw member, a pusher member that can come into contact with the sloped side of the seesaw member, and a rotating shaft that passes through the bent portion. Movable L One arm is connected to the other arm of the first direction changing member via a link member, and the other arm is connected to the push-out mechanism via another link member. The first direction changing member and the second direction changing member interlocked with the pushing mechanism are provided, and when the seesaw member and the pushing member are not in contact with each other, the first direction changing member is the seesaw member. The rotation is locked by the contact with the roller, and when the roller is lifted by the contact between the seesaw member and the pushing member, the contact with the roller is released and the rotation is enabled.

  In another form, the rotation shaft of the second direction changing member projects through the panel of the door main body and protrudes outward, and is interlocked with a handle member that opens and closes the door main body. . Still another embodiment is provided with a cover that covers a portion where the rotation shaft of the second direction changing member protrudes outward from the panel, and is provided inside the cover, and a gap between the edge of the cover and the panel It is characterized by providing a shielding gasket material for performing electromagnetic wave shielding. Still another embodiment is a gasket holder in which the horizontal shield body has substantially the same width as the door body, is arranged in parallel with the upper end and the lower end of the door body, and is slidable in the vertical direction by the push-out mechanism, A horizontal shield gasket material that is held by the gasket holder and can be brought into close contact with an opposing door frame is provided.

  In still another embodiment, the door side pushing mechanism is provided in a substantially vertical direction in the vicinity of the door bottom in the door body, and can pass through the upper end and the lower end of the door body, respectively, and the extrusion mechanism A pair of dead bolts slidable in a vertical direction by the door body, a door body side stress load body fixed to an upper end and a lower end of the door body, and a roller that contacts a door side surface of the dead bolt, the door A door frame-side stress load body provided with a roller that is fixed to the upper and lower parts of the frame, and in contact with a door-side surface of the dead bolt in the closed state of the door body, The front end of the door body is pushed in the closing direction by moving over the circumference of the roller of the door frame side stress load body, and the closed state of the door body is maintained.

  Still another embodiment is a door in which the door-side pushing mechanism opposes the door-side vertical shield gasket material when the horizontal shield body contacts the top and bottom of the door frame to generate a repulsive force. The horizontal shield body and the door end side pushing mechanism are operated so as to be delayed from the time of close contact with the frame. In still another embodiment, the push-out mechanism includes a slide body that is coupled to the horizontal shield body and the door-end side pushing mechanism via a link member, and slides between the panels in a substantially horizontal direction. By making the movable members of the direction shield body and the door-end side pushing mechanism substantially symmetric with the slide body sandwiched therebetween, the force for moving the slide body in the horizontal direction by their own weight is offset. The above and other objects, features and advantages of the present invention will become apparent from the following detailed description and the accompanying drawings.

  According to the present invention, the shield gasket material provided on the upper and lower sides of the door and the door end side is compressed and adhered to the door frame side against the repulsive force of the gasket material in accordance with the closing timing of the door. Since the shield gasket material that can be in close contact with the door frame side is also provided on the side, uniform electromagnetic shielding properties around the entire door periphery can be ensured. Further, when the door is manually opened and closed, the handle for opening and closing is fixed during the movement of the door, so that an effect that the door can be stably opened and closed can be obtained.

  Hereinafter, the best mode for carrying out the present invention will be described in detail based on examples.

  First, Embodiment 1 of the present invention will be described with reference to FIGS. 1A is a front view showing the overall configuration of this embodiment, FIGS. 1B-1 and B-2 are views showing a shield gasket, and FIG. -A cross-sectional view taken along line #A and viewed in the direction of the arrow. FIG. 2 is a diagram showing the internal structure of the door body of this embodiment. 3A is a perspective view showing the structure of the edge of the door body, and FIG. 3B is a cross-sectional view showing the structure of the lower part of the door body, and FIG. This corresponds to a cross-sectional view taken along line #B. 4A and 4B are front views showing the operation of the present embodiment, in which FIG. 4A is a view showing a state when the door is moved, and FIG. 4B is a view showing a state when the door is closed. FIG. 5 is a diagram showing the operation of the trigger mechanism of this embodiment, FIG. 6 is a diagram showing the structure of the opening / closing handle portion of this embodiment, (A) is a cross-sectional view, and (B) is the above ( It is the top view which looked at A) from arrow F6 direction. Unless otherwise specified, it is assumed that a metal material having an electromagnetic wave shielding function is used as the material of each part constituting this embodiment.

  As shown in FIG. 1, the electromagnetic wave shield door 20 (hereinafter referred to as “door”) of this embodiment is, for example, a sliding door type door that can be freely opened and closed at a doorway (entrance / exit) 10 of an electromagnetic wave shielding room. The door 20 may be one that prevents leakage of electromagnetic waves from the inside of the doorway 10, or may be used to prevent electromagnetic waves from entering from the outside to the inside of the doorway 10. . The door 10 is provided with a door frame 12 including an upper frame member 12A, a lower frame member 12B, a door tip side frame member 12C, a door bottom side frame member 12D, and an intermediate frame member 12E. A shield material (not shown) having an electromagnetic wave shielding function is laid on the periphery, ceiling, and floor. A shield wall surface 14 is provided between the door bottom side frame member 12D and the intermediate frame member 12E. The door 20 is movable in a direction indicated by an arrow F1 in FIG. 1 along a rail 16 provided on the upper frame member 12A. In addition, a locking mechanism that prevents the door 20 from shaking in the thickness direction during movement is provided below the door 20.

  As shown in FIG. 3A, the door 20 of this embodiment has a shielding effect on both the front and back surfaces of the main body frame 22 having a predetermined thickness composed of an upper end 22A, a lower end 22B, a door tip 22C, and a door bottom 22D. The panels 26 and 27 are superposed. A gasket holder 164 is provided on the door end side and a gasket holder 168 is provided on the door bottom side so as to sandwich the main body frame 22 and the panels 26 and 27. Further, a gasket holder 218 is attached to the upper side via columns 206 and 216 described later, and a gasket holder 252 is attached to the lower side via columns 240 and 250.

  The door-end gasket holder 164 includes a shield gasket 166 on the surface that contacts the door-end side frame member 12C. As shown in FIGS. 1 (B-1) and (B-2), the shield gasket 166 is formed of a metal mesh 166B having conductivity such as a Monel knitted wire around an elastic material such as a rubber tube 166A. It is covered and has an electromagnetic shielding function. The material is an example. For example, a neoprene sponge rubber is used as the rubber tube 166A, and a metal mesh 166B covered with a braided wire of tinned copper is used as a shield gasket 166. You may make it do. The gasket holder 168 on the door bottom side is provided with a shield gasket 170 having the same configuration as the shield gasket 166 in a substantially vertical direction so as to fill a gap generated when the main body frame 22 is sandwiched. On the other hand, the intermediate frame member 12E of the door frame 12 is provided with a frame 18 having a substantially L-shaped cross section in a substantially vertical direction, as shown in FIG. The frame 18 is provided at a position where the end face 18A on the short side bites into the shield gasket 170 on the door bottom side of the door 20 when the door 20 is completely closed. Alternatively, if necessary, in addition to the above configuration, as shown by the dotted line in FIG. 1 (C), another shield gasket 172 is provided in the frame 18 in a substantially vertical direction, and the door 20 is completely installed. When closed, the end surface 168A of the gasket holder 168 on the door 20 side may be in close contact therewith. The structure of the upper and lower gasket holders 218 and 252 will be described later.

  First, the sliding mechanism of the door 20 will be described. As shown in FIGS. 1 (A) and 2, two support plates 30A and 30B are fixed to the upper end 22A of the door 20 at an appropriate interval. The support plates 30A and 30B are rotated by the support plates 30A and 30B. Shafts 32A and 32B of possible pulleys 34A and 34B are supported. The pulleys 34A and 34B move on the rail 16 provided on the upper frame member 12A, so that the door 20 can be opened and closed. On the other hand, as shown in FIG. 3 (B), the lower end 22B of the door 20 is provided with an anti-vibration guide 36 having a groove portion 36A having a substantially U-shaped cross section. The anti-vibration guide 36 suppresses the vibration of the door 20 in the thickness direction by fitting the groove 36A to the outside of the roller 40 provided on the roller base 38 of the lower frame member 12B. The roller base 38 and the roller 40 are provided as a set in a position that fits inside the unreserved margin of the door 20, and even when the door 20 is opened, a cover skirt (described later) of the lower portion of the door 20 is provided. It is hidden inside 260 and 262 and is not visible from the outside.

  Next, a lock mechanism (trigger mechanism) of the handle 55 for opening and closing the door 20 will be described. As shown in FIG. 2, intermediate frames 24 </ b> A and 24 </ b> B are provided at appropriate intervals on the inner side of the main body frame 22, approximately parallel to the upper end 22 </ b> A and the lower end 22 </ b> B. In FIG. 2, one panel 27 is omitted for easy understanding. A holder 50 is provided on the door end side between the intermediate frames 24A and 24B, and a substantially L-shaped direction changing lever 54 that rotates about a shaft 52 is provided in the holder 50. Yes. The shaft 52 is rotatably supported by the holder 50 and passes through the opening 26A of the panel 26 and is connected to a handle 55 for opening / closing operation outside the door 20 as shown in FIG. ing. Therefore, when the handle 55 is rotated, the direction changing lever 54 is rotated together with the shaft 52.

  A cover 56 is provided on the exposed portion of the shaft 52. The cover 56 includes a cylindrical portion 56A that covers an exposed portion of the shaft 52, and a step portion 56B having a diameter larger than that of the cylindrical portion 56A. The edge of the step portion 56B includes the cover 56 together with the handle 55. It is in a non-contact state with the panel 26 so that it can rotate. Further, a substantially ring-shaped shield gasket 58 is provided in the hollow portion of the stepped portion 56B, and the gap between the edge of the stepped portion 56B and the panel 26 is blocked to prevent leakage and intrusion of electromagnetic waves. is doing. Further, one end portion 54A of the direction changing lever 54 has an upper direction provided on the upper end side of the door 20 via a linkage 60 passing through the shaft 60 and an opening 68 provided in the support frame 24A. The other end 54 </ b> B is connected to the conversion lever 74 and is connected to a horizontal slider 116, which will be described later, via a shaft 64 and a linkage 66.

  The upper direction change lever 74 is substantially L-shaped, and a shaft 72 penetrating the bent portion is rotatably supported by a lever base 70 provided near the upper end of the door end 22C. Yes. The end of one arm 74A of the direction change lever 74 is connected to the lower direction change lever 54 via the shaft 76 and the linkage 62, and can be linked to the direction change lever 54. It has become. Further, the end of the other arm 74B passes through an opening 82 provided on the door end side of the main body frame upper end 22A, and the tip protrudes from the upper end 22A. The opening 82 is set to a length that does not hinder the rotation of the direction changing lever 74. In addition, since the linkage 62 receives compressive and tensile forces, in this embodiment, as shown in FIG. 2, the linkage 62 is constituted by a square pipe and a screw member for adjusting the length.

  Further, a seesaw member 88 that indirectly locks the rotation of the lower direction changing lever 54 and the handle 55 by locking the turning of the direction changing lever 74 is provided on the door end side of the upper end 22A. It has been. The seesaw member 88 is supported by a trigger base 84 provided on the door end side of the upper end 22A, and can swing around a rotation shaft 86 at a substantially central portion. Further, a roller 90 and a backrest 94 are provided at the end of the seesaw member 88 on the door bottom side, and an inclination 96 is formed above the end of the door tip side. The seesaw member 88 is unbalanced in weight with respect to the rotating shaft 86, and when no vertical external force is applied, the roller 90 side is always lowered, and the inclined 96 side is from the uppermost end of the door 20, For example, it is set so as to protrude about 10 mm. The rotating shaft 86 receives a stress related to the horizontal movement of the entire door 20, and encloses a dry bearing to smoothly lower the roller 90 side, and bears a large radial load while rotating friction. The reduction of both is made compatible.

  While the door 20 is moving (see FIG. 5A), the arm 74B side end of the direction changing lever 74 is sandwiched between the roller 90 and the backrest 94 of the seesaw member 88, and the contact surface 80 contacts the roller 90. There is no freedom of rotation other than play, and the movement is locked. The angle θ formed by the line connecting the rotation shaft 86 of the seesaw member 88 and the shaft 92 of the roller 90 and the contact surface 80 is 90 ° or more, so that the lock can be locked even when torque is applied to the direction change lever 74. It is not released. On the other hand, a fixing piece 98 for pressing down the end portion of the seesaw member 88 on the side of the inclination 96 is fixed near the door end of the upper frame member 12A, and the lower surface thereof has substantially the same gradient as the inclination 96. A slope 100 is formed.

  As shown in FIG. 5A, while the handle 55 is pulled in the horizontal direction, the direction change lever 74 (and thus the lower direction change lever 54) is locked by the seesaw member 88. Do not rotate. When the door 20 advances and reaches a predetermined position before closing (for example, about 10 mm before), as shown in FIG. 5B, the slope 96 of the seesaw member 88 and the slope 100 of the fixed piece 98 are obtained. And the slope 96 side of the seesaw member 88 is pushed down as the door 20 further advances. When the handle 55 is continuously pulled and the angle θ becomes smaller than 90 °, a force for pushing up the roller 90 side is generated. Finally, as shown in FIG. You can go through under 90 freely. In this state, the lock of the handle 55 by the seesaw member 88 is released, and the handle 55 can be turned as shown by the arrow as shown in FIGS.

  Next, the push-out mechanism interlocked with the handle 55, the door end side pushing mechanism and the horizontal shield mechanism that operate via the push-out mechanism will be described. A central base 28A and a rear base 28B are provided between the intermediate frames 24A and 24B. In addition, the rear part here is the Tojiri side. A pair of rails 110 and 112 are provided between the center base 28 </ b> A and the rear base 28 </ b> B substantially in parallel along the moving direction of the door 20. On these rails 110 and 112, horizontal sliders 114 and 116 which can slide on the rails 110 and 112 are provided. The horizontal sliders 114 and 116 are connected by a linkage 118 substantially parallel to the rails 110 and 112, and are configured to slide simultaneously. The central horizontal slider 116 is connected to the lower direction change lever 54 via the shaft 174 and the linkage 66, and in the horizontal direction in conjunction with the rotation of the direction change lever 54. It is movable.

  First, an end of a dead bolt 132 is connected to the upper side of one horizontal slider 114 via the shaft 120, the linkage 124, and the shaft 128. The dead bolt 132 passes through the opening 136 and the positioning base 140 provided in the intermediate frame 24A and the opening 138 provided in the upper end 22A, and can slide in a substantially vertical direction. Similarly, an end of a dead bolt 134 is connected to the lower side of the horizontal slider 114 on the door bottom side through a shaft 122, a linkage 126, and a shaft 130. The dead bolt 134 passes through the opening 150 and positioning base 154 of the intermediate frame 24B and the opening 152 of the lower end 22B, and is slidable in a substantially vertical direction. Further, the upper end 22A of the main body frame is provided with a stress load table 142 having a roller 144 that contacts the surface of the dead bolt 132 on the door end side, and the lower end 22B is provided on the door end side of the dead bolt 134. A stress loading table 156 having a roller 158 in contact with the surface is provided.

  On the other hand, the upper frame member 12A of the door frame 12 is provided with a stress load base 146 having a roller 148 at a position on the door bottom side of the dead bolt 132 when the door 20 is closed. . Similarly, the lower frame member 12 </ b> B of the door frame 12 is provided with a stress loading table 160 provided with a roller 162 at a position on the door bottom side of the dead bolt 134 when the door 20 is closed. The stress load table 160 can be finely adjusted with respect to the position of the roller 162 in order to match with the upper stress load table 146. The stress load table 160 and the roller table 38 and the roller 40 of the anti-sway mechanism are both arranged so as to fit inside the unreserved margin of the door 20.

  The force transmitted from the handle 55 through the shaft 52, the direction changing lever 54, and the linkage 66 pushes the horizontal sliders 116 and 114 that allow the movement only in the horizontal direction to the rear (doors side). Then, dead bolts 132 and 134 that operate only in the vertical direction (vertical direction) are pushed out via linkages 124 and 126 connected to the horizontal slider 114. In the closed state of the door 20, the dead bolt 132 pushed upward is pushed between the roller 144 on the upper end 22A side and the roller 148 on the upper frame member 12A side, as shown in FIG. Then, when overcoming the circumference of the roller 148, a boosting mechanism is formed, and the entire door 20 is pushed toward the door-end side frame member 12C. At the same time, the dead bolt 134 on the lower side is also pushed between the roller 158 on the lower end 22B side and the roller 162 on the lower frame member 12B side. Push in toward the frame 12C. In this manner, by pressing the entire door 20 toward the door-end side frame member 12C with the upper and lower dead bolts 132 and 134, the door-end shield gasket 166 is pressed and adhered to the door-end side frame member 12C at the same time. The door 20 can be locked in the closed position. Furthermore, simultaneously with the pushing to the door end side, the end face 18A of the frame body 18 on the door frame 12 side bites into the shield gasket 170 on the door bottom side and is crimped, and the electromagnetic shielding on the door bottom side is also possible.

  On the other hand, an end of a push rod 188 is connected to the upper side of the horizontal slider 116 on the center side via a shaft 176, a linkage 180, and a shaft 184. The push rod 188 passes through an opening 192 and a positioning table 194 provided in the intermediate frame 24A, and can slide in a substantially vertical direction. Similarly, the end of the push rod 190 is connected to the lower side of the horizontal slider 116 via a shaft 178, a linkage 182, and a shaft 186. The push rod 190 passes through the opening 226 and the positioning table 228 of the intermediate frame 24B, and can slide in a substantially vertical direction.

  The tip of the upper push rod 188 is connected to the substantially central portion of the horizontal bar 196, and the opening portions 196A and 196B at both ends of the horizontal bar 196 are provided with slide rods 198 and 208 passing therethrough. Yes. Both ends of the slide rod 198 are supported by linear motion guides 202A and 202B fixed to the base 200, and movement other than vertical movement is restricted. Both ends of the other slide rod 208 are also supported by linear motion guides 212A and 212B fixed to the base 210, and movements other than vertical movement are restricted. Furthermore, the horizontal bar 196 is provided with support columns 206 and 216 on the inner side of the slide rods 198 and 208. The struts 206 and 216 pass through openings 204 and 214 provided at the upper end 22A, respectively, and are connected to the gasket holder 218. As shown in FIG. 3A, the gasket holder 218 has substantially the same width as the main body frame 22, and is constituted by a shield surface 218A and a storage portion 218B having a substantially U-shaped cross section. A part of the shield gasket 224 is held by 218B.

  Similarly, the tip of the lower push rod 190 is connected to a substantially central portion of the horizontal bar 230, and the slide rods 232 and 242 passing through the openings 230A and 230B at both ends of the horizontal bar 230 are provided. Is provided. Both ends of the slide rod 232 are supported by linear guides 236A and 236B fixed to the base 234, and movements other than vertical movement are restricted. Both ends of the other slide rod 242 are also supported by linear motion guides 246A and 246B fixed to the base 244, and movements other than up and down are restricted. Furthermore, the horizontal bar 230 is provided with support columns 240 and 250 inside the slide rods 232 and 242. The support columns 240 and 250 pass through openings 238 and 248 provided at the lower end 22B, respectively, and are connected to the gasket holder 252. As shown in FIG. 3A, the gasket holder 252 has substantially the same width as the main body frame 22, and is constituted by a shield surface 252A and a storage portion 252B having a substantially U-shaped cross section. Part of the shield gasket 254 is held by the portion 252B. As shown in FIG. 3B, cover skirts 260 and 262 for covering the gasket holder 252, the anti-vibration guide 36, the roller base 38, and the roller 40 are provided on the lower side of the main body frame 22. It is done.

  Furthermore, a flexible shield material 264 is provided inside one cover skirt 262, and the gasket holder 252 and the panel 26 are connected by the shield material 264. Specifically, as the shield material 264, for example, a steel foil having a thickness of about 35 μm and a copper foil are used, and the upper side is sandwiched between the panel 26 and the cover skirt 262, and the fixing screw 265 is used. Then, the lower side is sandwiched between the shield surface 252A of the gasket holder 252 and the fixing plate 266, and the fixing screw 267 is used for the simultaneous fastening. Although not shown, on the upper gasket holder 218 side, members similar to the cover skirts 260 and 262 and the flexible shield material 264 described above are provided, and the gasket holder 218 and the panel 26 are connected to each other. Yes.

  When the horizontal slider 116 is pushed backward (door end side) by the operation of the handle 55, push rods 188 and 190 that operate only in the vertical direction are pushed out through the linkages 180 and 182. In the closed state of the door 20, the push rod 188 pushed upward pushes the gasket holder 218 upward through the horizontal bar 196 and the columns 206 and 216. Then, the shield gasket 224 can be in close contact with the upper frame member 12A, and the upper portion of the door 20 can be electrically continued without a gap. Similarly, the push rod 190 pushed downward pushes down the gasket holder 252 downward via the horizontal bar 230 and the columns 240 and 250. Then, the shield gasket 254 comes into close contact with the lower frame member 12B, and the lower portion of the door 20 is blocked. In this embodiment, as shown in FIG. 4 (B), when the door 20 is completely closed, the linkages 180 and 182 are set so as to incline in a direction opposite to that before closing, exceeding the vertical state. . That is, the horizontal slider 116 is preset so as to overrun. For example, the peak of the steering force of the handle 55 is set so that the linkages 180 and 182 are substantially vertical at a point of 60 mm with respect to the stroke of 70 mm of the horizontal slider 116, and the remaining 10 mm is overrun. .

  Extrusion of the gasket holders 218 and 252 as described above is started simultaneously with the extrusion of the dead bolts 132 and 134, but the shield gaskets 224 and 254 come into contact with the upper frame member 12A and the lower frame member 12B and are repelled. A time difference is provided in advance so that the timing at which the force is generated is delayed from the timing at which the door-side shield gasket 166 is brought into close contact with the door-side frame member 12C. Such a time difference can be set by adjusting the lengths and attachment positions of the linkages 124, 126, 180, and 182. In addition, when the compression and adhesion of the upper and lower shield gaskets 224 and 254 are finished, the linkages 180 and 182 are inclined in the direction opposite to that before closing, exceeding the vertical state. For this reason, even if an unexpected external force (without the willingness to open the door 20) is applied to the handle 55, the repulsive force of the shield gaskets 224, 254 is not transmitted to the handle 55, and is stable. It can be kept closed.

  Next, the operation of this embodiment will be described with reference to FIGS. In the initial state, the door 20 is at an arbitrary position of the door 10 as shown in FIGS. 4A and 5A, and the seesaw member 88 protrudes from the uppermost end of the door 20 on the inclined 96 side, 90 is down. Further, the contact surface 80 of the upper direction change lever 74 is in contact with the roller 90 of the seesaw member 88, and the movement is locked. That is, the rotation of the lower direction change lever 54 and the handle 55 together with the direction change lever 74 is also locked, so that the door 20 can be moved left and right by grasping the handle 55. Further, since the linkages 124, 126, 180, and 182 connected to the horizontal sliders 114 and 116 are not extended, the dead bolts 132 and 134 and the upper and lower gasket holders 218 and 252 do not operate, as shown in FIG. Keeps the state.

  When the handle 55 is pulled and comes to a position before the door 20 is closed (approximately 10 mm before), as shown in FIG. 5B, the seesaw member 88 is fixed to the inclined 96 side and the door frame 12 side. As shown in FIG. 5 (C), the door end side of the seesaw member 88 is pushed down as the inclined surface 100 of 98 comes into contact and the door 20 further advances. When the door end side of the seesaw member 88 is pushed down, the roller 90 on the opposite side is lifted, so that the upper end of the direction changing lever 74 that has been in contact with the roller 90 passes under the roller 90 and the lock is released. Then, as shown in FIGS. 5C and 5D, the lock of the lower direction change lever 54 and the handle 55 is also released, and the handle 55 can be rotated in the direction indicated by the arrow in the drawing.

  When the handle 55 starts to rotate in the direction indicated by the arrow in FIG. 5D, the horizontal sliders 116 and 114 connected to the direction changing lever 54 move to the door bottom side along the rails 110 and 112, and the door 20 Move to the operation of the shield mechanism around. First, the dead bolts 132 and 134 are pushed up and down the door 20 through linkages 124 and 126 connected to the horizontal slider 114 on the door bottom side. The upper deadbolt 132 rides on the circumference of the roller 148 of the upper frame member 12A and at the same time the lower deadbolt 134 rides on the circumference of the roller 162 of the lower frame member 12B. It is pushed toward the side frame member 12C. Then, the shield gasket 166 provided at the door tip of the door 20 is compressed and is in close contact with the door tip side frame member 12C. Further, the door 20 is fixed at the closed position. At the same time, the end face 18A of the frame 18 on the door frame 12 side bites into and closes the shield gasket 170 on the door bottom side.

  On the other hand, simultaneously with the pushing out of the dead bolts 132 and 134, the push rods 188 and 190 connected to the central horizontal slider 116 via the linkages 180 and 182 are started in the vertical direction. Then, the upper gasket holder 218 is pushed out toward the upper frame member 12A through the horizontal bar 196 and the columns 206 and 216 connected to the upper push rod 188, and the shield gasket 224 is in close contact with the upper frame member 12A. Then, the electromagnetic wave shielding above the door 20 is performed. At the same time, the lower gasket holder 252 is pushed out toward the lower frame member 12B through the horizontal bar 230 and the columns 240, 250 connected to the lower push rod 190, and the shield gasket 254 is lowered into the lower frame member 12B. The electromagnetic wave shielding under the door 20 is performed in close contact with the door. As described above, the timing at which the shield gaskets 224 and 254 come into contact with the upper frame member 12A and the lower frame member 12B to generate a repulsive force causes the door-end shield gasket 166 to be applied to the door-end frame member 12C. It is set so as to be delayed from the timing of contact. Therefore, the operation of the gasket holders 218 and 252 is completed after the dead bolts 132 and 134 have completed pushing the door 20 forward.

  As described above, the linkages 124 and 126 connected to the horizontal slider 114 at the time point when the dead bolts 132 and 134 are pushed into the door end and the upper and lower shields of the door frame 12 by the gasket holders 218 and 252 are finished. , Fully extended vertically. Furthermore, the linkages 180 and 182 connected to the horizontal slider 116 are inclined in the direction opposite to that before closing, beyond the vertical state. For this reason, the repulsive force of the shield gaskets 166, 224, and 254 is not transmitted to the handle 55, and a good electromagnetic shielding state can be maintained. In addition, movable members (dead bolts 132, 134, gasket holders 218, 252 and the like) connected to the horizontal sliders 114 and 116 are substantially symmetrical above and below the horizontal sliders 114 and 116, and balance the weight. Therefore, the force for moving the horizontal sliders 114 and 116 due to the weight of the movable members cancels out by the upper and lower movable members, so that the force for moving the handle 55 is not generated.

  Further, as shown in FIG. 1C, the door bottom side of the door 20 is brought into close contact with the end surface 18A of the frame 18 on the door frame 12 side and the shield gasket 170 on the door bottom side of the door 20, thereby Shielding is possible. The periphery of the handle 55 is also electromagnetically shielded by the shield gasket 58 provided in the cover 56 described above. As described above, the gasket material provided on the upper and lower sides of the door 20 and the door tip side is compressed and adhered to the door frame 12 side in accordance with the closing timing of the door 20 and is also shielded on the door bottom side and the periphery of the handle 55. Since the gasket material is provided, the door 20 can be closed and the electromagnetic shielding of the door 10 can be performed satisfactorily.

  When the door 20 is opened, the operation is basically the reverse of the above-described closing case. That is, when the handle 55 is rotated in the direction to open the door 20, the upper and lower gasket holders 218 and 252 are separated from the upper frame member 12A and the lower frame member 12B, and dead bolts 132 for compressing the door end side, 134 is pulled into the inside of the door 20, and the door 20 becomes movable. When the handle 55 is further rotated, the linkage 62 connected to the lower direction change lever 54 is pulled downward, the arm 74B of the upper direction change lever 74 connected to the linkage 62 is warped, and the roller 90 Go through the bottom. Then, as shown in FIGS. 4A and 5A, the tip of the arm 74B comes into contact with the roller 90 and the backrest 94 of the seesaw member 88 and is fixed at a fixed position. And the rotation of the handle 55 is locked. Then, the fixed handle 55 is pulled to open the door 20. When the door 20 is opened, the repulsive force of the shield gaskets 166, 224, and 254 is applied, so that the force (the turning force) for operating the handle 55 for compression and close contact release is reduced compared to when the door 20 is closed.

Thus, according to the first embodiment, there are the following effects.
(1) The shield gaskets 166, 224, and 254 provided on the top and bottom of the door 20 and the door end side are compressed and adhered to the door frame 12 side against the repulsive force of the gasket material in accordance with the closing timing of the door 20. In addition, since the shield gaskets 170 (and 172 if necessary) and 58 are also provided on the door bottom side and the periphery of the handle 55, uniform electromagnetic shielding properties around the door 20 can be ensured.
(2) Since the handle 55 is locked by the trigger mechanism including the two direction change levers 54 and 74, the seesaw member 88, and the fixed piece 98, the handle 55 can be fixed when the door 20 is moved. The door 20 can be opened and closed stably.
(3) The dead bolts 132 and 134 provided on the door bottom side, together with the close contact of the shield gasket 166 on the door end side, are fixed at the closed position of the door 20, so that the closed state can be maintained. it can.
(4) Since the timing of close contact of the door end side shield gasket 166 by the dead bolts 132 and 134 and the timing of generating the repulsive force by bringing the upper and lower shield gaskets 224 and 254 into close contact with the door frame 12 are shifted. There is no need to shield the upper and lower electromagnetic waves before closing the door 20.
(5) The sliding door type requires less labor for opening and closing the door 20 and can save space.

In addition, this invention is not limited to the Example mentioned above, A various change can be added in the range which does not deviate from the summary of this invention. For example, the following are also included.
(1) The shape and dimensions shown in the first embodiment are examples, and may be appropriately changed as necessary. Similarly, various known materials may be used as long as they have an electromagnetic wave shielding function.
(2) Although the first embodiment has been described with respect to a manual open / close door, the present invention is also applicable to an automatic door. For example, by using a gear motor and a belt as a driving source and transmitting the horizontal driving force to the upper arm 74B of the upper direction changing lever 74 via a transmission member or the like, Similar effects can be obtained.
(3) The sliding mechanism or swinging mechanism of the door 20 of the first embodiment, and the pushing mechanism using the horizontal sliders 114 and 116 are merely examples, and various known mechanisms can be used as long as the same effect can be obtained. You can do it.
(4) The present invention can be applied to all places where electromagnetic shielding from inside and outside is required, such as hospital MRI rooms, anechoic chambers, and shield rooms in research facilities.

  According to the present invention, the shield gasket material provided on the upper and lower sides of the door and the door end side is compressed and adhered to the door frame side against the repulsive force of the gasket material in accordance with the closing timing of the door, Since the shield gasket material is provided also on the door bottom side and around the opening / closing handle to secure the electromagnetic shielding properties around the door, it can be applied to the use of the sliding door type electromagnetic shielding door.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows Example 1 of this invention, (A) is a front view which shows the whole structure, (B-1) and (B-2) are figures which show a shield gasket, (C) is said (A). It is sectional drawing cut | disconnected along the # A- # A line | wire and seeing in the arrow direction. It is a figure which shows the internal structure of the door main body of the said Example 1. FIG. It is a figure which shows the door main body of the said Example 1, (A) is a perspective view which shows the structure of an edge part, (B) is sectional drawing which shows the structure of a lower part. It is a figure which shows the effect | action of the said Example 1, (A) is a mode at the time of door movement, (B) is a front view which shows a mode at the time of door closing. It is a figure which shows the effect | action of the trigger mechanism of the said Example 1. FIG. It is a figure which shows the structure of the handle | steering-wheel part of the said Example 1, (A) is sectional drawing, (B) is the top view which looked at the said (A) from the arrow F6 direction.

Explanation of symbols

10: Doorway (entrance / exit)
12: Door frame 12A: Upper frame material 12B: Lower frame material 12C: Door tip side frame material 12D: Door bottom side frame material 12E: Intermediate frame material 14: Shield wall surface 16: Rail 18: Frame 18A: End face 20: Electromagnetic wave Shield door 22: Body frame 22A: Upper end 22B: Lower end 22C: Door tip 22D: Door bottom 24A, 24B: Intermediate frame 26, 27: Panel 26A: Opening 28A: Central base 28B: Rear base 30A, 30B: Support plate 32A , 32B: Shaft 34A, 34B: Pulley 36: Shaking guide 36A: Groove 38: Roller base 40: Roller 50: Holder 52: Shaft 52A: End 54: Direction changing lever 54A, 54B: Arm 55: Handle 56: Cover 56A: Tube portion 56B: Stepped portion 58: Shield gasket 60, 64: Shaft 62, 66: Linkage 68: Opening 70: Lever stand 72: Shaft 74: Direction change lever 74A, 74B: Arm 76: Shaft 78: Inclination 80: Contact surface 82: Opening portion 84: Trigger stand 86: Rotating shaft 88: Seesaw member 90: Roller 92: Shaft 94: Back 96: Inclination 98: Fixed piece 100: Slope 110, 112: Rail 114, 116: Horizontal slider 118: Linkage 120, 122, 128, 130: Shaft 124, 126: Linkage 132, 134: Dead bolt 132A, 134A :: curved portions 136, 138, 150, 152: openings 140, 154: positioning tables 142, 146, 156, 160: stress loading tables 144, 148, 158, 162: rollers 164, 168: gasket holders 166, 170 172: Shield gasket 166A: Rubber tube 166B: Metal mesh 168A: End faces 174, 176, 178, 184, 186: Shafts 180, 182: Linkage 188, 190: Push rods 188A, 188B, 190A, 190B: Ends 192, 226: Openings 194, 228: Positioning table 196 230: Horizontal bars 196A, 196B, 230A, 230B: Openings 198, 208, 232, 242: Slide rods 200, 210, 234, 244: Tables 202A, 202B, 212A, 212B, 236A, 236B, 246A, 246B: Linear motion guides 204, 214, 238, 248: openings 206, 216, 240, 250: support columns 218, 252: gasket holders 218A, 252A: shield surfaces 218B, 252B: storage portions 220: shield plates 222: square members 224, 254 : Field gasket 260, 262: cover skirt 264: shielding material 266: fixing plate 265 and 267: fixing screws

Claims (8)

An electromagnetic shielding door attached to a door frame provided in the opening,
Panels are provided on both sides of the frame with a predetermined thickness, and the entire door body can be shielded against electromagnetic waves.
A sliding mechanism for moving the door body in the opening and closing direction;
A vertical shielding gasket material provided along the door tip and door bottom of the door body,
The door frame side vertical shield body that is provided on the door frame side and can be in close contact with the vertical shield gasket material on the door bottom side when the door body is closed,
A horizontal shield body having substantially the same width as the door body, arranged parallel to the upper and lower ends of the door body, and capable of sliding in the vertical direction and shielding between the opposing door frames. ,
The door body is pushed in the closing direction, the door side vertical shield gasket material is brought into close contact with the opposing door frame, and the door side pushing mechanism for maintaining the closed state of the door;
An extrusion mechanism that is provided between the panels, converts a horizontal movement into a vertical direction, transmits the movement to the horizontal shield body and the door-end side pushing mechanism, and operates them;
A trigger mechanism that enables the push-out mechanism to operate when the door body is at a predetermined closing position;
An electromagnetic shielding door characterized by comprising: The trigger mechanism is
It is arranged on the upper door end side of the door body, has a roller on the door end side, has an inclination on the door end side upper end, and can swing around a rotation shaft in the substantially central portion. And when a vertical external force is not applied, the seesaw member is supported unbalanced so that the roller side is lowered and the inclined side protrudes upward from the door body,
A first direction changing member that is formed in a substantially L-shape that can be rotated together with a rotating shaft that penetrates the bent portion, and whose tip of one arm can contact a roller of the seesaw member;
A pushing member that is fixed in the vicinity of the door tip of the upper part of the door frame, has a slope of the same grade as the slope of the seesaw member on the lower end surface, and can be brought into contact with the inclined side of the seesaw member;
It is formed in a substantially L-shape that can rotate together with a rotating shaft that penetrates the bent portion, and one arm is connected to the other arm of the first direction changing member via a link member, and the other arm is A second direction changing member interlocked with the first direction changing member and the pushing mechanism by being connected to the pushing mechanism via another link member;
With
When the seesaw member and the pushing member are not in contact with each other, the first direction changing member is locked in rotation by the contact of the seesaw member with the roller, and when the roller is lifted by the contact between the seesaw member and the pushing member. 2. The electromagnetic wave shield door according to claim 1, wherein contact with the roller is released to enable rotation.   The rotating shaft of the second direction changing member projects through the panel of the door body and protrudes outward, and is interlocked with a handle member that opens and closes the door body. Electromagnetic shielding door. A cover that covers a portion in which the rotation shaft of the second direction changing member protrudes outward from the panel;
A shield gasket material that is provided inside the cover and shields electromagnetic waves in the gap between the edge of the cover and the panel;
The electromagnetic shielding door according to claim 3, wherein the electromagnetic shielding door is provided. The horizontal shield body is
A gasket holder having substantially the same width as the door body, arranged parallel to the upper and lower ends of the door body, and slidable in the vertical direction by the push-out mechanism;
A horizontal shield gasket material held by the gasket holder and capable of being in close contact with the opposing door frame;
The electromagnetic wave shield door according to any one of claims 1 to 4, wherein the electromagnetic wave shield door is provided. The door side pushing mechanism is
A pair of dead bolts provided in a substantially vertical direction in the vicinity of the door bottom in the door main body, each capable of penetrating the upper end and the lower end of the door main body and slidable in the vertical direction by the push-out mechanism;
The door body side stress load body provided with a roller which is fixed to the upper end and the lower end of the door body, and is in contact with the door side surface of the dead bolt,
The door frame side stress load body, which is fixed to an upper part and a lower part of the door frame, and includes a roller that contacts a door bottom side surface of the dead bolt in the closed state of the door body.
With
The front end of the dead bolt climbs over the circumference of a roller of the door frame side stress load body, thereby pushing the door body in the closing direction and maintaining the closed state of the door body. The electromagnetic wave shield door in any one of 1-5.   The push-out mechanism is configured such that the door-side pushing mechanism opposes the door-side vertical shield gasket material when the horizontal shield body contacts the top and bottom of the door frame to generate a repulsive force. The electromagnetic shielding door according to any one of claims 1 to 6, wherein the horizontal shield body and the door end side pushing mechanism are operated so as to be delayed from the time of close contact with the door. The extrusion mechanism is
A slide body connected to the horizontal shield body and the door-end side pushing mechanism via a link member, and sliding in a substantially horizontal direction between the panels;
Including
The movable member of the horizontal shield body and the door-end side pushing mechanism is made substantially symmetrical with the slide body sandwiched therebetween, thereby canceling the force for moving the slide body in the horizontal direction by their own weight. The electromagnetic wave shield door according to any one of claims 1 to 7.

Images