JP3858183B2 - Door seal structure in an anechoic chamber - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a door seal structure in an anechoic chamber or the like that does not require a step on a floor surface.
[0002]
[Prior art]
An electromagnetic shielding door device is incorporated at an entrance of an anechoic chamber or the like.
[0003]
In a conventional door device, a door main body is attached to a door frame installed at an entrance so as to be freely opened and closed. The door main body incorporates a pressing mechanism that presses the door main body in the closed position against the door frame, and a shield packing is attached to the entire front surface of the door frame. However, the lower part of the door frame protrudes upward with respect to the floor surface of the doorway. Therefore, the door body can be brought into close contact with the front surface of the door frame via the shield packing by rotating the door body to the closed position and pressing the door body against the door frame via the pressing mechanism. Can be shielded electromagnetically.
[0004]
[Problems to be solved by the invention]
When such a prior art is used, the door frame has a lower portion with respect to the floor surface of the doorway in order to achieve electromagnetic shielding over the entire circumference via the shield packing by bringing the door body into close contact with the front surface. There is a problem that it is necessary to project, and an unnecessary step is formed at the entrance.
[0005]
Therefore, in view of the problems of the prior art, the object of the present invention is to provide a closing member having a shield packing at the lower part of the door body, so that the lower part of the door frame is formed at the same level as the floor surface of the doorway. An object of the present invention is to provide a door seal structure in an anechoic chamber or the like that can easily realize good electromagnetic shielding properties.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the structure of the present invention comprises a drive member that is incorporated in the door body so as to be movable laterally, and a closing member that is incorporated in the lower part of the door body so as to be movable up and down and connected to the drive member. The door body is attached through a conductive contact material that is slidably in contact with the conductive connection plate of the door body, with the same shield packing as that attached to the upper frame material and the frame material of the door frame. The drive member is a pressing mechanism that presses the door body in the closed position against the door frame by rotating the discs with eccentric pins arranged on the upper end surface and both end surfaces of the door body all at once. And a common drive source to drive the door body to the hinge side and the non-hinge side via the pressing mechanism side pinion and the drive member side rack, and simultaneously bring the door body into close contact with the door frame via the pressing mechanism. Close the closure member to the lower part of the door frame Allowed to complete the electromagnetic shielding of the door body, and its gist that returning the the closure member to release the contact of the door body relative to the door frame via the pressing mechanism upwards.
[0007]
The closing member is provided with a plurality of elevating rods, and each elevating rod can be engaged with an oblique guide hole of the driving member.
[0008]
Further, the lifting rod can be engaged with the guide hole via the roller.
[0009]
Note that the lifting rod may be connected via a common connecting material.
[0010]
[Action]
According to the configuration of the present invention, the closing member is connected to the laterally movable driving member and can be moved up and down via the driving member. That is, even if the lower part of the door frame is formed at the same level as the floor surface of the entrance / exit, the closing member is lowered to close the gap between the door body and the door frame, and has good electromagnetic shielding properties via the shield packing. Can be realized.
[0011]
The lifting rod that engages with the oblique guide hole of the drive member can drive the closing member up and down in conjunction with the lateral movement of the drive member.
[0012]
When the lifting rod engages with the guide hole via the roller, the roller can roll along the guide hole, so that the mechanical resistance when raising and lowering the lifting rod is reduced, and the lifting rod is Thus, the closing member can be raised and lowered smoothly.
[0013]
When connecting the lifting rod through a common connecting material, the connecting material is a long drive member, closing member, even when a plurality of lifting rods are used, all the lifting rods are lifted and lowered simultaneously, The closing member can be raised and lowered smoothly.
[0014]
When the drive member is moved laterally in conjunction with the door body pressing mechanism, the driving member can bring the door body into close contact with the door frame and simultaneously close the closing member with the lower portion of the door frame through the pressing mechanism. By using a common drive mechanism for the pressing mechanism and the drive member, the electromagnetic shielding of the door body can be completed at once.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0016]
The door seal structure in an anechoic chamber or the like has a drive member 31 incorporated in the door body 20 and a closing member 41 as main members (FIG. 1). However, the door main body 20 forms a door device together with the door frame 10 (FIGS. 2 and 3), and is combined with the door frame 10 so as to be freely opened and closed.
[0017]
The door frame 10 is configured by assembling a lower frame member 11, an upper frame member 12, and left and right eaves frame members 13 and 13 into a frame shape. In addition, the lower frame material 11, the upper frame material 12, and the eaves frame materials 13 and 13 are each formed by the metal plate material appropriately bent. The lower frame member 11 has a reinforcing member 11a assembled over the entire length thereof, and is installed at substantially the same level with respect to both the floor surfaces F and F on the indoor side and the outdoor side. The upper frame member 12 is fixed to a building (not shown) in combination with the reinforcing member 12a and the packing storage rail 12b. One gutter frame material 13 is combined with the reinforcing material 13a and the packing storage rail 13b, and the other gutter frame material 13 is combined with the reinforcement material 13c and the packing storage rail 13b, and each is fixed to a building (not shown).
[0018]
A pair of shield packings 14 and 14 are mounted on the front surfaces of the upper frame member 12 and the collar frame members 13 and 13 via packing storage rails 12b, 13b and 13b, respectively. The shield packings 14, 14... Are electromagnetic shielding packings such as conductive rubber packings or composite packings formed by covering a surface of a rubber elastic material with a conductive metal net. It is continuous over the left and right and the upper part, and is formed in a gate shape with an open bottom (FIG. 4).
[0019]
The door main body 20 is connected to one rib frame member 13 of the door frame 10 through upper and lower hinge plates 25 and 25 so as to be freely opened and closed (FIGS. 3 and 4). The door main body 20 is configured by combining structural members 21, 21... Assembled in a frame shape, an indoor surface material 22, and an outdoor surface material 23 (FIGS. 2 and 3). The structural members 21, 21... Are connected to each other via an inner reinforcing plate 21a. Further, the surface material 23 is bent to the indoor side along the upper and left and right structural materials 21, 21... And connected to the surface material 22, and the opening / closing lid 23 b is assembled to the surface material 23.
[0020]
The surface materials 22 and 23 are each extended to the lower part of the lower structural material 21 (FIG. 5), and the reinforcing plate 22a is attached inside the surface material 22. As shown in FIG. A connecting plate 22b made of a conductive stainless steel plate is attached to the lower end of the reinforcing plate 22a. Further, the surface materials 22 and 23 are connected to each other on the lower side of the lower structural material 21 via other reinforcing materials 22c and 23a, and the lower portion of the door body 20 is closed. The reinforcing member 22c extends to the lower surface of the structural member 21 along the reinforcing plate 22a, and a fixed base 22d is attached inside the reinforcing member 22c. Further, a handle 20a is attached to the outdoor side of the door body 20 (FIG. 4).
[0021]
The hinge plates 25 and 25 are connected to both the door frame 10 and the door body 20 so as to be horizontally rotatable through support blocks 25a and 25a on the door frame 10 side and support blocks 25b and 25b on the door body 20 side, respectively. (FIGS. 3 and 4). The support blocks 25a and 25a are fixed to the reinforcing material 13c of the hinge-side frame member 13, and the support blocks 25b and 25b are connected to the reinforcing plate 21a of the door body 20 through a thick fixing plate (not shown). It is fixed to. Therefore, the door body 20 can be opened and closed (in the direction of arrow K1 in the figure) through the hinge plates 25 and 25 in the closed position (solid line in FIG. 3) and the open position (two-dot chain line in the figure). . Further, the door body 20 can be substantially translated in the front-rear direction with respect to the door frame 10 in the closed position via the hinge plates 25, 25.
[0022]
A pressing mechanism 26 is incorporated in the door body 20. The pressing mechanism 26 includes disks 26g, 26g,... With eccentric pins 26f disposed on the upper end surface and both end surfaces of the door body 20, and the engaging member 15 incorporated on the door frame 10 side corresponding to the disks 26g, 26g,. 15 ..., 16, 16 ... (FIGS. 4 and 6). The engaging members 15, 15... To be incorporated into the frame member 13 on the side opposite to the hinge of the door frame 10 and the upper frame member 12 are disposed behind the guide grooves 13c, 12c, respectively. The disks 26g, 26g,... Are fixed to the tips of the drive shafts 26d, 26d,. The drive shafts 26d, 26d,... Are connected via an appropriate gear mechanism, and the drive shaft 26d, the operation motor 26b in the door main body 20 and the operation motor 26b in the door main body 20 are used as a drive source. , 26 g... Can be rotated simultaneously. An emergency operation handle 26b can be attached to the shaft 26c of the operation handle 26a by opening the outdoor lid 23b (two-dot chain line in FIG. 3). The main gear mechanism including the shaft 26c and the operation motor 26d associated therewith is housed in the case 26c1.
[0023]
The discs 26g, 26g,... On the upper end surface of the door body 20 and the side end surface on the anti-hinge side rotate the door body 20 to the closed position via the hinge plates 25, 25, thereby guiding the guide grooves 13c, 13c of the door frame 10. ..., 12c, each eccentric pin 26f can be made to enter the engaging groove 15a of the corresponding engaging member 15 (FIG. 4, FIG. 6 (A)). On the other hand, the disks 26g, 26g,... On the hinge side of the door body 20 always engage the respective eccentric pins 26f with the engagement holes 16a of the corresponding engagement members 16 regardless of whether the door body 20 is opened or closed ( FIG. 4 and FIG. 6 (B)). Each engagement member 16 is rotatably mounted on the hinge-side collar member 13 via the bracket 16b.
[0024]
Therefore, the pressing mechanism 26 positions the door body 20 in the closed position and rotates the disks 26g, 26g... Simultaneously (in the directions of arrows K2, K2 in FIGS. 6A and 6B), and the eccentric pins 26f, 26f. Are pivoted about 270 ° in the engagement groove 15a of the corresponding engagement member 15 and the engagement hole 16a of the engagement member 16, so that the door main body 20 can be pressed against the door frame 10 and brought into close contact therewith. At this time, the eccentric pins 26f, 26f,... Once drive the door body 20 to the outdoor side in the middle of turning to adjust the posture of the door body 20 with respect to the door frame 10 in parallel. Can be driven parallel to the side.
[0025]
Further, the pressing mechanism 26 reverses the disks 26g, 26g... Simultaneously to return the eccentric pins 26f, 26f... To their original positions, thereby releasing the adhesion of the door body 20 to the door frame 10 and the door. The main body 20 can be opened. The eccentric pins 26f, 26f,... Of the hinge-side disks 26g, 26g,... Are always engaged with the engaging holes 16a of the corresponding engaging members 16, respectively. The door body 20 can be stably rotated via the hinge plates 25 and 25 to be opened and closed without greatly leaving the door.
[0026]
The drive member 31 is incorporated in the lower part of the door main body 20 through holders 32, 32... (FIGS. 1 and 5). The drive member 31 is disposed in the width direction of the door body 20, and is formed with oblique guide holes 31 a, 31 a... Inclined upward toward the hinge side of the door body 20. The guide holes 31a, 31a,... Are formed in parallel with each other at the same height, and a short horizontal portion is formed at each end. The holders 32, 32... Are fixed to the fixed base 22d of the door body 20 via spacers 32a made of a sliding material such as nylon, and as a whole, hold the drive member 31 so as to be movable laterally. Yes.
[0027]
The driving member 31 is connected to the pressing mechanism 26 via a rack 33 and a pinion 26e. The rack 33 is fixed to the drive member 31 via the rack base 33a, and the pinion 26e is fixed to a drive shaft 26d that forms a part of the pressing mechanism 26. The fixed base 22d of the door body 20 is provided with a spacer 22e made of a sliding material that is in sliding contact with the back surface of the drive member 31 via a reinforcing plate 22e1, and the spacer 22e and the reinforcing plate 22e1 are attached to the rack 33. The drive member 31 is prevented from being deformed by the engagement of the pinion 26e.
[0028]
The closing member 41 is an aluminum block body incorporated in the lower part of the door body 20 so as to be movable up and down, and is configured in combination with a conductive reinforcing material 41a and surface materials 41b and 41b. Further, shield packings 42, 42 similar to the shield packings 14, 14... Of the door frame 10 are mounted on the lower surface of the closing member 41, and slide on the connection plate 22 b of the door body 20 on the rear side surface. Conductive contact materials 41c and 41c that are freely contacted are provided over the entire length. Further, elevating rods 43, 43... Are erected on the closing member 41, and each elevating rod 43 has a guide block 43a that penetrates the reinforcing member 22c of the door body 20 up and down and is fixed to the fixed base 22d. It penetrates slidably. Each lifting rod 43 is connected to the closing member 41 by inserting a lower small-diameter portion 43b into the closing member 41 and tightening a set screw 43c. A bush 43a1 is incorporated in each guide block 43a. ing.
[0029]
A roller 43d that rolls in the guide hole 31a of the drive member 31 is mounted on the upper portion of each lifting rod 43, and the intermediate portion is connected to the other lifting rods 43, 43 via a connecting member 43e. Yes. Therefore, the lifting rods 43, 43... Are engaged with the guide holes 31a via the rollers 43d, respectively, and the drive member 31 is moved laterally and driven up and down via the rollers 43d, 43d. The member 41 can be raised and lowered. Further, the closing member 41 is electrically connected to the connection plate 22b via the contact members 41c and 41c, and is electrically integrated with the door body 20.
[0030]
The operation of the door seal structure in the anechoic chamber or the like is as follows.
[0031]
When the door main body 20 is in the open position, or when the door main body 20 is in the closed position, the drive member 31 is not pressed against the door frame 10 by the pressing mechanism 26. It stands by on the side opposite to the hinge (two-dot chain line in FIG. 1), and the closing member 41 is made to wait at the ascending limit via the guide holes 31a, 31a... And the lifting rods 43, 43. In this case, the rollers 43d, 43d,... Are positioned at the upper part of the corresponding guide hole 31a on the hinge side, and the corresponding lifting rod 43 is pulled up to the upper limit.
[0032]
When the pressing mechanism 26 is operated to press the door body 20 in the closed position against the door frame 10 side, the drive member 31 moves laterally toward the hinge in conjunction with the pressing mechanism 26 via the pinion 26e and the rack 33 (see FIG. 4), the elevating rods 43, 43... Are simultaneously driven downward through the guide holes 31 a, 31 a, and rollers 43 d, 43 d, and the closing member 41 can be lowered (arrows in FIG. 4). (K4 direction, solid line in Fig. 1). Therefore, the closing member 41 closes the gap between the door body 20 and the lower member 11 of the door frame 10 (FIG. 5), and comes into close contact with the lower member 11 via the shield packings 42 and 42. That is, the door main body 20 is electrically and completely integrated with the door frame 10 via the shield packings 14, 14... On the door frame 10 side and the shield packings 42, 42 on the closing member 41 side. Can be realized.
[0033]
Further, when the close contact of the door body 20 to the door frame 10 is released via the pressing mechanism 26, the drive member 31 moves laterally to the anti-hinge side of the door body 20 in conjunction with the pressing mechanism 26, and guide holes 31a, It is possible to drive the elevating rods 43, 43 upward through the rollers 31a, 43d, 43d, etc., thereby returning the closing member 41 upward.
[0034]
In the above description, the drive member 31 may be moved laterally via any manual or electric drive source instead of being interlocked with the pressing mechanism 26 via the rack 33 and the pinion 26e. Further, the drive rod 43 may be engaged via a pin that is slidably engaged with the guide hole 31a, instead of being engaged with the guide hole 31a via the roller 43d.
[0035]
【The invention's effect】
As described above, according to the present invention, by combining a laterally movable driving member and a closing member with shield packing, the closing member is lowered via the driving member, and the door is opened via the shield packing. Since the main body and the door frame can be shielded electrically integrally, even if the lower part of the door frame is formed at the same level as the floor surface of the doorway, good electromagnetic shielding can be easily realized. Has an excellent effect.
[Brief description of the drawings]
[Fig. 1] Overall configuration perspective view [Fig. 2] Vertical sectional view of the door device [Fig. 3] Horizontal sectional view of the door device [Fig. 4] Schematic diagram of the configuration of the door device [Fig. 6 is an enlarged exploded perspective view of the main part of FIG.
20 ... Door body 26 ... Pressing mechanism 31 ... Drive member 31a ... Guide hole 41 ... Closing member 42 ... Shield packing 43 ... Lifting rod 43d ... Roller 43e ... Connecting material

Claims (4)

A drive member incorporating freely traverse the door body, built vertically movably to the lower portion of the door body, it comprises a closed chain member you connected to the driving member, the closure member, the upper door frame frame member, The same shield packing as that attached to the frame material is attached to the lower surface, and the drive unit is electrically integrated with the door body through a conductive contact material that slidably contacts the conductive connection plate of the door body. The member is driven by a common drive source with a pressing mechanism that presses and closes the door body in the closed position against the door frame by simultaneously rotating discs with eccentric pins arranged on the upper end surface and both end surfaces of the door body. It is driven to the hinge side and the non-hinge side of the door body through the pinion on the pressing mechanism side and the rack on the driving member side, and the door body is brought into close contact with the door frame via the pressing mechanism, and at the same time, the closing member is moved to the door. Adhere to the lower part of the frame.蔽 to complete the sealing structure of the door in the anechoic chamber or the like, characterized in that to return the closure member to release the contact of the door body upwardly relative to the door frame via the pressing mechanism.   The door sealing structure in an anechoic chamber or the like according to claim 1, wherein a plurality of lifting rods are attached to the closing member, and each of the lifting rods engages with an oblique guide hole of the driving member. .   3. The door sealing structure in an anechoic chamber or the like according to claim 2, wherein the elevating rod engages with the guide hole via a roller.   4. The door sealing structure in an anechoic chamber or the like according to claim 2, wherein the elevating rod is connected through a common connecting material.

Images