JP2008133711A - Sliding type electromagnetic shield door and floor shutter device for sliding door applicable therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide, by combining a first engaging member mounted on a sliding door and a second engaging member on a door-frame side, a sliding type electromagnetic shield door which can easily be operated by manual and also a floor shutter device which can effectively close a groove on the floor side, while the door frame can be thinner to the absolute minimum. <P>SOLUTION: With respect to a top-railed type sliding door 20 fitted in a door frame 10, cam rollers 32, 32, etc. as first engaging members to be ascended/descended at once via an operating handle 31 are mounted. By engaging the cam rollers 32, 32, etc. with plate cams 17, 17, etc. as second engaging members on the door frame 10, the sliding door 20 in a totally closed position is moved backward in parallel. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a sliding door type electromagnetic shield door used in an anechoic chamber, an electromagnetic shield room for a medical MRI apparatus that generates electromagnetic waves, and the like, and a floor shutter device for a sliding door applicable thereto.

  There has been proposed a sliding door type electromagnetic shield door installed at an entrance / exit of an anechoic chamber or an electromagnetic shield room (Patent Document 1).

This one incorporates a sliding door type sliding door into the door frame, pastes an electromagnetic wave absorber on the rear side of the sliding door, and corresponds to the four rounds of the sliding door in the fully closed position, Cam shafts are arranged in the lower frame and the left and right collar frames. Each camshaft is provided with a plurality of plate cams at equal intervals and at the same angle, and each camshaft can be driven to rotate via an individual drive source. Therefore, when all the camshafts are rotated with the sliding doors in the fully closed position, the sliding doors are pressed against the door frame via the plate cams on each camshaft, and the electromagnetic shield is completed via the absorber on the rear side. be able to. In addition, since the sliding door type sliding door opens and closes to the left and right, there is an advantage that no dead space for opening and closing is generated unlike a hinged door.
JP-A-6-33669

  In such a conventional technique, the sliding door in the fully closed position is pressed against the door frame via the plate cam on the four-turn cam shaft incorporated in the door frame, so that a drive source for rotationally driving each cam shaft is provided in the door frame. The door frame is unnecessarily thick, and the electrical wiring to the drive source is complicated, and there is a problem that it cannot be opened if a power failure occurs during an earthquake disaster. The lower frame of the door frame has a groove that guides the lower part of the sliding door. When the sliding door is opened, the groove that opens upward is exposed on the floor side, preventing the passage of carts and the like. There was also a problem of becoming. In addition, if an elevating step board or an intermediate bending shutter is provided to close the floor side groove, it is necessary to provide a large storage space on the floor for storing these when closing the sliding door. A storage mechanism is essential.

  Accordingly, in view of the problems of the prior art, an object of the present invention is to minimize the door frame by combining the first engagement member mounted on the sliding door and the second engagement member on the door frame side. Provided are a sliding door type electromagnetic shield door that can be made thin and lightly operated only by manual operation, and a floor shutter device for a sliding door that can effectively close a floor groove even when the sliding door is opened. There is.

  The structure of the 1st invention concerning this application for achieving this object (referring to the invention according to claim 1, hereinafter the same) comprises a door frame and a sliding door type sliding door incorporated in the door frame, The sliding door is continuously mounted with electromagnetic shielding gaskets along the four sides of the rear surface side, and a first engagement member disposed so as to be movable up and down at the top and bottom of the door tip side, door bottom side, An operation handle that lifts and lowers one engaging member all at once is mounted, and when the sliding door is in the fully closed position, a second engaging member corresponding to each first engaging member is arranged on the door frame. In the fully closed position, the sliding door is translated backward by engaging the first engaging member with the second engaging member via the operation handle, and the entire length of the gasket is engaged with the four circumferences of the opening. The gist is to complete the electromagnetic shield by pressing against the rib.

  The sliding door may be urged forward via a spring, and may be restrained from being unopenable by moving backward in the fully closed position, and the first opening / closing stroke except for the fully closed position may be used. You may mount the lock member which prohibits raising / lowering of this engagement member.

  In addition, a shutter member that can be bent up and down is connected to the lower end of the sliding door on the door-end side so as to be relatively movable back and forth, and the shutter member bends upward in a storage portion in the frame on the door-side of the door frame. Can be stored.

  The structure of the second invention (referring to the invention according to claim 6, the same applies hereinafter) includes a shutter member that can be bent up and down to connect one end to the lower end of the sliding door and the door end of the door frame for the sliding door. And a weight that is connected to the tip of the shutter member via a wire that hangs on a guide pulley at the top of the storage portion. The shutter member is a sliding door. When it is driven in the closing direction, it is drawn into the storage part via the weight, and when the sliding door is driven in the opening direction, it is drawn out from the storage part and the floor side groove below the sliding door is closed.

  According to such a configuration of the first invention, the sliding door in the fully closed position drives the first engagement member via the operation handle, and each first engagement member is a second engagement member on the door frame side. The electromagnetic shield can be completed through the gasket on the rear surface side by being rearwardly translated by being individually engaged with each other. The operation handle is installed, for example, on the door end side of the sliding door, and as a lever handle that protrudes on both sides of the sliding door, for example, when it is raised upward, the first engagement member and the second engagement member are engaged. It is preferable that the first engagement member engages with the second engagement member and translates the sliding door rearward when it is rotated 90 ° so as to come off and fall to the door end side. In addition, such an operation handle can be used for opening and closing the sliding door after standing upward.

  The first engagement member on the sliding door side can be a cam roller, for example, and the second engagement member on the door frame side can be a plate cam with which the cam roller engages. The former may be a plate cam, the latter may be a cam roller, and both may be configured as wedge-shaped or trapezoidal engaging members that are slidably engaged with each other via inclined surfaces. In addition, the first engagement member on the sliding door side may be raised upward all at once via the operation handle in order to engage with the second engagement member on the door frame side, and lowered at the same time. Further, the upper pair and the lower pair on the door tip side and the door bottom side may be driven in opposite directions. However, in any case, the second engagement member on the door frame side is properly engaged with the first engagement member in accordance with the driving direction of the corresponding first engagement member. The installation direction shall be set appropriately.

  As the electromagnetic shielding gasket to be mounted along the four sides on the rear surface side of the sliding door, a so-called wire mesh gasket in which a core material of a soft rubber material or a synthetic resin material is wrapped with a braided body such as a beryllium copper alloy wire is preferable. . This type of gasket can be pressed against the four engagement ribs on the opening and elastically deformed to reduce the pressing force required to complete the electromagnetic shield by translating the sliding door. The operating force to be applied can be made small and elastically deformed easily. In addition, the engagement ribs on the four sides of the opening may be formed on the door frame side, or may be formed on a shield panel such as an electromagnetic shield room for assembling the door frame.

  By sliding the lower end of the sliding door over the full opening / closing stroke except the fully closed position, there is no risk of swinging back and forth during the opening / closing movement, and the sliding door can be opened and closed stably. For example, the sliding door may be engaged with a guide roller provided on the door frame side with respect to a guide rail that is mounted downward on the lower portion of the sliding door. When the corresponding notch is provided and the sliding door in the fully closed position is translated backward, the sliding door can be restrained so as not to be opened. However, the guide rail and the guide roller may be provided on the door frame side and the sliding door side, respectively, and the guide roller may be replaced with a guide pin.

  The sliding door is urged forward via a spring to drive the first engagement member via the operation handle, and the first engagement member is brought into engagement with the second engagement member. By simply releasing it, it can automatically translate forward and break the electromagnetic shield by the gasket. The spring that biases the sliding door is, for example, a sliding member that is built in each hanging member for opening and closing to suspend the sliding door and biases the upper part of the sliding door to the front side, and that slides on the sliding of the door frame. The lower part of the sliding door can be urged forward by using a spring that is provided at the lower end of the sliding door and presses and urges the sliding member.

  When the sliding door is translated backward in the fully closed position, the sliding door is restrained so as not to be opened, so that the gasket on the rear surface side of the sliding door is not inadvertently damaged. In addition, in order to restrain the sliding door in this way, engaging members that engage each other are provided on the sliding door side and the door frame side, and these engaging members are only moved when the sliding door in the fully closed position is translated backward. May be configured to engage with each other, and the form of each engaging member can be arbitrarily changed. For example, in addition to engaging an engaging member projecting on one of the sliding door side and door frame side with an engaging hole or engaging recess formed on the other, a guide roller is provided on one of the sliding door side and door frame side, When the guide rail for the roller is provided on the other side and the sliding door in the fully closed position is translated backward, the guide roller may be relatively moved to a position intersecting the guide rail to restrain the sliding door so that it cannot be opened. .

  The sliding door is equipped with a lock member that prohibits the lifting and lowering of the first engaging member over the full opening / closing stroke except for the fully closed position, so that the operation handle can be used for opening / closing the sliding door without any trouble. This is because the operation handle is locked in a non-rotatable state, for example, in an upward standing state when the first engagement member is prevented from being raised or lowered. However, it is assumed that the first engagement member is automatically lifted and lowered by the operation handle when the sliding door is in the fully closed position, and is allowed to move up and down arbitrarily.

  When the sliding door is driven in the opening direction, the shutter member connected to the lower end of the sliding door is pulled out of the storage portion in the door frame on the door side, and has a groove on the floor formed in the lower frame of the opening. By closing, a cart or the like passing through the opening can be smoothly run. However, at this time, the upper surface of the lower frame is formed at the same level as the floor. Further, since the shutter member does not require a complicated storage mechanism and does not require a large storage space on the floor side, the installation work is simple. For example, the shutter member is installed on two or more floors of a building. However, there is no possibility of causing a problem of insufficient floor thickness.

  According to the second aspect of the invention, the shutter member that connects one end to the door end side of the sliding door is pulled into the storage portion via the weight when the sliding door is driven in the closing direction, and rises upward in the storage portion. Stored. Therefore, it is not necessary to provide a long storage part horizontally on the floor of the door frame side of the door frame, or to provide a deep storage part on the floor side of the opening that opens and closes by the sliding door, facilitating installation work as a whole. be able to. Further, when the sliding member is driven in the opening direction, the shutter member is pulled out from the storage portion, closes the floor-side groove, and can smoothly pass a carriage or the like passing through the opening. In addition, the sliding door here may be a hanging door type, and may be a general door type or a sliding type. In the latter case, the shutter member may be configured to close a door guide groove or a sill groove as a floor side groove at the same level as the floor surface.

  The shutter member is a long belt-like member that can be bent up and down, and is strong enough to withstand the weight of a carriage that passes across the upper surface by supporting both end portions on both sides of the groove on the floor side. It shall have. Such a shutter member may be configured, for example, in a slat chain shape, and may be embedded with a large number of rod-shaped reinforcing materials in the width direction of the flexible belt, and moreover, a large number arranged in a comb shape. An elastic material sheet such as a rubber material or a plastic material may be attached to the upper surface of the rod-shaped reinforcing material. Such a shutter member can also be used as the shutter member of the first invention, and has the same effects as the shutter member of the first invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  The sliding door type electromagnetic shield door is constructed by incorporating a sliding door type sliding door 20 into the door frame 10 (FIGS. 1 and 2). However, the sliding door 20 is a sliding door that opens and closes an opening A such as an electromagnetic shield room (not shown), and in the fully closed position where the opening A is fully closed as shown in FIG. A good electromagnetic shield can be completed. In the following description, the near side perpendicular to the paper surface of FIGS. 1 and 2 is referred to as the front, and the opposite side is referred to as the back.

  The door frame 10 includes an upper frame 11, heel frames 12 and 13 on the door end side and door butt side, a lower frame 14 corresponding to the opening A, and a middle column 15 erected on the front side of the sliding door 20. Have. However, a shield panel B constituting an electromagnetic shield room or the like is exposed between the opening A and the heel frame 13 on the door butt side, and the upper frame 11, the heel frames 12, 13, and the lower frame 14 are It is assumed that they are electrically connected to the surface of the shield panel B integrally. A hanger rail 16 for opening and closing the sliding door 20 is installed on the upper frame 11 via a bracket 16a, and a shoe 14a is formed on the lower frame 14. Further, plate cams 17 as second engaging members are respectively attached to the upper and lower portions of the frame 12 on the door-end side and the upper and lower portions of the middle column 15 in a rearward direction.

  The sliding door 20 is suspended from the hanger rail 16 so as to be freely opened and closed via suspension members 21 and 21 on the door end side and the door bottom side. An operation handle 31 as a rotary lever handle is mounted on the door end side of the sliding door 20, and each of the upper side and the lower side of the door tip side and the door bottom side of the sliding door 20 are respectively on the door frame 10 side. Cam rollers 32, 32... As first engaging members corresponding to the plate cam 17 are arranged. It is assumed that the operation handle 31 protrudes symmetrically toward the front side and the rear side of the sliding door 20, and the cam rollers 32, 32... Are positioned behind the corresponding plate cams 17, respectively. A pair of upper and lower parts protrude from the door end side and the door bottom side. A lock pin 34 protrudes upward on the door end side of the sliding door 20, and a dog is arranged on the door tip side of the upper frame 11 so as to correspond to the lock pin 34 on the sliding door 20 in the fully closed position. 18 is mounted via a bracket 18a.

  A guide roller 22 is mounted upward along with the suspension member 21 on the door end side and the door bottom side of the upper end surface of the sliding door 20, and a guide rail 22 a corresponding to the guide rollers 22, 22 is provided on the upper frame 11. It is arranged. The door end side of the guide rail 22a is set to a length that deviates from the guide roller 22 on the door end side when the sliding door 20 is set to the fully closed position, and the door bottom side is extended sufficiently long. Further, in the middle of the guide rail 22a, a notch 22b corresponding to the door end side guide roller 22 is formed when the sliding door 20 is set to the fully closed position. On the other hand, another guide roller 23 is attached to the lower end of the middle column 15. A guide rail 23a for accommodating the guide roller 23 is attached to the lower end of the sliding door 20, and a notch corresponding to the guide roller 23 is provided on the door bottom side of the guide rail 23a when the sliding door 20 is in the fully closed position. 23b is formed. Sliding members 24 and 24 that are in sliding contact with the shoe 14 a are attached to the lower end of the sliding door 20.

  The upper frame 11 is connected to the shield panel B via the conductive connecting material C (FIG. 3). Each suspension member 21 includes a traveling roller 21a that engages and rolls on the hanger rail 16, a slide shaft 21b that is orthogonal to the hanger rail 16, and a suspension bracket 21c that slidably penetrates the slide shaft 21b. It is configured as.

  The suspension bracket 21c is connected to the upper end of the sliding door 20, and a spring 21d that urges the sliding door 20 forward through the suspension bracket 21c is attached to the slide shaft 21b. The bracket 21e for the traveling roller 21a and the bracket 21f for the slide shaft 21b are connected vertically, and a spacer 21g is interposed between the suspension bracket 21c and the sliding door 20. On the slide shaft 21b, the suspension bracket 21c is positioned via a spacer 21h that is detachably screwed to the bracket 21f. However, the spacer 21h may be replaced with an adjustment bolt that is screwed into the bracket 21f in parallel with the slide shaft 21b to position the suspension bracket 21c. Each guide roller 22 on the upper end surface of the sliding door 20 is erected on the suspension bracket 21c of the suspension member 21, and can roll while contacting the front surface of the guide rail 22a on the upper frame 11 side when the sliding door 20 is opened and closed. it can.

  A gasket 25 for electromagnetic shielding is mounted on the rear surface side of the sliding door 20 along the four circumferences. The gasket 25 is housed in a mounting groove 25 a formed in the sliding door 20 and is exposed on the rear surface side of the sliding door 20. Further, the engagement ribs 19 formed on the shield panel B are continuously formed on the four circumferences of the opening A so as to face the entire length of the gasket 25 on the sliding door 20 side when the sliding door 20 is in the fully closed position. Has been. However, FIG. 3 shows only the gasket 25 at the upper end of the sliding door 20 and the corresponding engagement rib 19.

  On the door end side and the door bottom side of the sliding door 20, elevating members 33 for the upper and lower cam rollers 32 and 32 are arranged so as to be movable up and down (FIGS. 4 and 5). However, in FIG. 5, only the door-side lifting member 33 is shown.

  The elevating members 33 and 33 are each formed in a channel shape, and are arranged vertically in parallel on the door end side and the door bottom side of the sliding door 20 so as to face each other. A slide rail 33a is attached to an intermediate portion of each elevating member 33 via a spacer 33b. A slider 33c fixed to the sliding door 20 side via a bracket 33d is slidably combined with the slide rail 33a. ing. On the other hand, each elevating member 33 is provided with a rack 33e. The racks 33e and 33e are a gear 31b attached to the shaft 31a for the operation handles 31 and 31, a chain 31d wound between the sprockets 31c and 31c, and a sliding door. It is mechanically connected via 20 door-side gears 31e, 31e.

  The shafts 31a for the operation handles 31 and 31 penetrate the sliding door 20 back and forth through a bearing (not shown), and the sprockets 31c and 31c are attached to the gears 31b and 31e, respectively. The gears 31b, 31e, and 31e all have the same number of teeth, and the sprockets 31c and 31c are the same. Therefore, when the operation handle 31 is rotated forward and backward from the front side or the rear side of the sliding door 20, the elevating members 33 and 33 can be raised and lowered all at once. In addition, the raising / lowering stroke of each raising / lowering member 33 is regulated by the stopper bolts 33f and 33f with the downward and upward cushioning materials arranged above and below each rack 33e via the bracket 33g.

  The cam rollers 32, 32 on the door end side of the sliding door 20 are mounted on the upper end portion and the lower end portion of the elevating member 33 on the door end side (FIGS. 5 and 6). Therefore, the cam rollers 32 and 32 can be lifted and lowered via the lifting member 33. However, only the upper cam roller 32 is representatively shown in FIGS.

  The cam roller 32 is mounted on a roller block 32a, and the roller block 32a is screwed to the elevating member 33 via collars 32b and 32b. The slider 32c attached to the roller block 32a is slidably combined with a slide rail 32d fixed to the sliding door 20 via a reinforcing plate 32e. The plate cam 17 on the side of the door frame 10 corresponding to each cam roller 32 has a cam groove 17a that is deep at the upper part and smooth at the lower part (FIGS. 3 and 5), and is shielded via the conductive connecting member C. It is attached to a frame 12 on the door-end side connected to the panel B. Therefore, each cam roller 32 corresponds to the deepest portion of the upper portion of the cam groove 17a of the corresponding plate cam 17 and does not engage with the cam groove 17a when the elevating member 33 is in the ascending limit.

  The lock pin 34 at the upper end of the sliding door 20 is connected to a lock member 36 that prohibits the ascending / descending member 33 from descending through a bell crank-shaped swing piece 35 (FIG. 6). The lock pin 34 is attached to the sliding door 20 through a bracket 34a so as to be movable up and down, and is attached upward via a spring 34b interposed between the stopper washer 34c on the lock pin 34 and the bracket 34a. It is energized. However, the lifting / lowering stroke of the lock pin 34 is regulated through a stopper plate 34e that engages with the axial notch 34d of the lock pin 34, and the stopper plate 34e is attached to the lower surface of the bracket 34a. The lower end of the lock pin 34 is rotatably connected to one end of the swing piece 35, and the swing piece 35 is rotatable around a threaded pin 35a. The other end of the swing piece 35 is rotatably connected to an intermediate portion of a plate-like lock member 36, and the lock member 36 is held so as to be horizontally movable via a bracket 36a.

  Therefore, when the lock pin 34 is free (solid line in FIG. 6), the lock member 36 is urged toward the elevating member 33 via the spring 34b and the swing piece 35, and a long hole 33h on the back surface of the elevating member 33 is provided. Is engaged with the elevating member 33 and the lowering of the elevating member 33 in the ascent limit is prohibited. When the sliding door 20 is in the fully closed position, the lock pin 34 is pushed down by the dog 18 on the upper frame 11 (in the direction of arrow K1 in FIG. 6), and the swing piece 35 rotates in the direction of arrow K2 in FIG. The lock member 36 is removed from the elevating member 33 (in the direction of arrow K3 in the figure, a two-dot chain line), and the elevating member 33 can be allowed to descend. If the lowering of the door-side lifting member 33 is prohibited and allowed in this way, the rotation of the operation handles 31 and 31 and the lowering of the door-side lifting member 33 are also simultaneously prohibited and permitted. . This is because the elevating members 33 and 33 and the operation handles 31 and 31 are mechanically connected via racks 33e and 33e, gears 31b, 31e and 31e, and a chain 31d. That is, the lock member 36 prohibits the lowering of the elevating members 33 and 33 in the full opening / closing stroke excluding the fully closed position of the sliding door 20 and allows the elevating members 33 and 33 to be lowered only in the fully closed position.

  The cam rollers 32, 32 on the door butt side of the sliding door 20 are mounted on the upper end portion and the lower end portion of the lift member 33 on the door butt side (FIGS. 7 and 8). Therefore, the cam rollers 32 and 32 can be lifted and lowered via the lifting member 33. However, only the upper cam roller 32 is representatively shown in FIGS.

  The mounting configuration of the door-side cam roller 32 is the same as the mounting configuration of the door-side cam roller 32 of FIGS. 3 and 5 except that the shape of the roller block 32a is different. The door-side cam roller 32 is arranged in the same relative positional relationship as the door-side cam roller 32 and the plate cam 17 on the eaves frame 12 with respect to the plate cam 17 mounted on the middle column 15 via the spacer 17c. Has been. 8 is also assembled in the same manner as the door-side suspension member 21 and the guide roller 22 in FIG. The upper end of the middle column 15 is connected to the upper frame 11 via a bracket 15a.

  The guide roller 23 at the lower end of the middle column 15 is attached to the middle column 15 via brackets 23c and 23d (FIGS. 9 and 10). The guide rail 23a on the sliding door 20 side that houses the guide roller 23 is attached to the lower end of the sliding door 20 via a bracket 23e, and a common cover 23f is hung on the bracket 23e and the guide rail 23a. . However, the notch 23b on the door bottom side of the guide rail 23a is assumed to be opened in common to the cover 23f.

  The sliding members 24, 24 at the lower end of the sliding door 20 are attached to the lower end of the sliding door 20 via brackets 24a. However, in FIGS. 9 and 10, the sliding member 24 on the door bottom side is illustrated. The sliding member 24 is formed of a wear-resistant synthetic resin material having a small friction coefficient, and is held in the bracket 24a so as to be movable back and forth through slide rods 24b and 24b and a stopper plate 24c. The sliding member 24 is urged toward the drop 14a of the lower frame 14 via springs 24d and 24d attached to the slide rods 24b and 24b, and the distal end surface of the slide member 24 is directed to the drop 14a. It is in sliding contact.

  The sliding door 20 raises the operating handles 31 and 31 upward, raises the elevating members 33 and 33 on the door end side and the door bottom side to the ascending limit, and pulls one of the operating handles 31 and 31 to the left and right. The opening A can be opened and closed at an arbitrary opening degree from any of the front side and the rear side of 20 (FIG. 1). The sliding door 20 is suspended so as to be openable and closable via the suspension members 21 and 21, and the lowering of the elevating member 33 on the door end side is prohibited via the lock member 36 in the full opening and closing stroke except the fully closed position. This is because both of the elevating members 33 and 33 are locked so as not to be lowered, and accordingly, the operation handles 31 and 31 are also locked so as not to rotate.

  The sliding door 20 during the opening / closing operation is biased forward via springs 21d and 21d built in the suspension members 21 and 21 and springs 24d and 24d for biasing the sliding members 24 and 24. The upper part is positioned in the front-rear direction by spacers 21h, 21h attached to the suspension members 21, 21 and guide rollers 22, 22 rolling along the guide rail 22a. Moreover, the sliding door 20 is positioned in the front-rear direction by the guide roller 23 housed in the guide rail 23a in the full opening / closing stroke excluding the fully closed position, and the lower end is prevented from shaking. The door-side and door-side cam rollers 32, 32... Correspond to the deepest part of the cam groove 17 a of the corresponding plate cam 17 and do not interfere with the plate cam 17.

  When the sliding door 20 is closed to the fully closed position (FIG. 2), the upper and lower cam rollers 32, 32 of the door-side lifting member 33 are respectively positioned on the upper and lower plate cams 17, 17 of the door-end side frame 12. The upper and lower cam rollers 32, 32 of the door-side lifting member 33 enter the deepest part of the cam groove 17 a, and the deepest part of the cam groove 17 a of the upper and lower plate cams 17, 17 respectively. Enter. At this time, the guide rollers 22 and 22 at the upper end of the sliding door 20 are respectively located at positions beyond the front end of the guide rail 22a and at the middle notch 22b. Reference numeral 23 denotes a position corresponding to the notch 23b on the door bottom side of the guide rail 23a. Further, the lock pin 34 is pushed down by the dog 18, and the lock member 36 is detached from the door-side lifting member 33 and allows the lifting members 33 and 33 to descend.

  Therefore, when the operation handle 31 pointing upward from the front side or the rear side of the sliding door 20 is rotated 90 ° so as to be tilted to the door end side of the sliding door 20, the elevating members 33 and 33 are lowered to the lower limit, The cam rollers 32, 32,. Each of the descending cam rollers 32 engages with the corresponding cam groove 17a of the plate cam 17, and translates the sliding door 20 rearward while compressing the springs 21d, 21d, 24d, 24d... (FIGS. 11 and 12). ), The entire length of the four-round gasket 25 on the rear surface side of the sliding door 20 is pressed against the four-round engagement rib 19 of the opening A to be elastically deformed to complete a good electromagnetic shield (FIGS. 11 to 16). When each cam roller 32 is engaged with the cam groove 17a of the plate cam 17, a necessary and sufficient pressing force can be applied to the sliding door 20 via the roller block 32a, the slider 32c, the slide rail 32d, and the reinforcing plate 32e.

  On the other hand, when the sliding door 20 is translated rearward in this way, the guide rollers 22 and 22 at the upper end of the sliding door 20 are connected to the guide rail 22a via the front end of the guide rail 22a and a notch 23b in the middle. The guide roller 23 at the lower end of the middle column 15 moves relative to the position intersecting the guide rail 23a through the notch 23b of the guide rail 23a (FIGS. 11 and 12). 15 and 16). Therefore, the sliding door 20 can be restrained so as not to be opened via the guide rollers 22, 22, 23 and the guide rails 22a, 23a.

  When the operation handle 31 is raised upward on the sliding door 20 in the fully closed position, the elevating members 33 and 33 are raised, and the cam rollers 32 on the door end side and the door bottom side are engaged with the cam groove 17a of the plate cam 17. In order to release the connection, the sliding door 20 translates forward through the springs 21d, 21d, 24d, 24d,... And returns to the original openable / closable position. Then, if the operation handle 31 is pulled in the opening direction of the sliding door 20, the sliding door 20 can be opened smoothly as it is. Further, when the sliding door 20 moves in the opening direction and the lock pin 34 is detached from the dog 18, the lifting members 33 and 33 are locked so as not to be lowered by the lock member 36. Thereafter, the operation handle 31 is locked so as not to rotate. It can be used for opening and closing the sliding door 20.

  In addition, the sliding door 20 removes the spacer 21h of each suspension member 21, moves the suspension bracket 21c to the tip of the slide shaft 21b, and sufficiently separates it from the door frame 10, thereby easily inspecting the gasket 25 on the rear surface side. Can be exchanged.

  In the above description, in the fully closed position of the sliding door 20, the lock pin 34 abuts against a door stop (not shown) on the door frame 12 instead of being engaged with the dog 18 on the upper frame 11. Thus, the lowering prohibition of the elevating member 33 by the lock member 36 may be canceled. The lock member 36 at this time may be configured so as to be integrally connected to the lock pin 34 and to be disengaged from the elevating member 33 when the lock pin 34 is retracted.

  Further, the engagement ribs 19 on the four sides of the opening A may be formed in the door frame 10 instead of being formed in the shield panel B constituting the electromagnetic shield room or the like, and the door frame 10 is connected to the shield panel B. You may form in the connection material C to do.

  The cam rollers 32, 32... As the first engaging member on the sliding door 20 side are lowered simultaneously through the operation handle 31 and the lifting members 33, 33 in the fully closed position of the sliding door 20 to the door frame 10 side. Instead of engaging with the plate cams 17, 17... As the second engaging members, the sliding door 20 is translated rearward by being raised all at once and engaged with the plate cams 17, 17. Also good. However, the plate cams 17 at this time have their installation directions reversed so that the deepest part of the cam groove 17a is at the bottom, and the lock member 36 is lifted and lowered at the lower limit in the fully closed position of the sliding door 20. Assume that the member 33 is allowed to rise.

  In addition, by dividing the elevating members 33 on the door end side and the door bottom side of the sliding door 20 into upper and lower parts and individually connecting them to the operation handle 31, the cam rollers 32 on the door bottom side and the upper side of the sliding door 20. , 32 and the lower cam rollers 32, 32 can be driven in opposite directions. Further, the cam rollers 32, 32... As the first engagement members may be plate cams, the plate cams 17, 17... As the second engagement members may be the cam rollers, and both are wedge-shaped or trapezoidal engagement members. Also good.

Other embodiments

  The sliding door 20 can be combined with a sliding door floor shutter device 40 whose main member is a shutter member 41 that can be bent up and down (FIG. 17).

  One end of the shutter member 41 is connected to the lower end of the sliding door 20 on the door end side. The shutter member 41 extends horizontally along the lower frame 14, and the distal end portion of the shutter member 41 is drawn into a storage portion S formed in the door frame 12 on the door end side, and a guide roller 42 below the storage portion S. A wire 43 that suspends a weight 44 is connected to the tip of the shutter member 41. However, the wire 43 is hung on the guide pulley 43a at the top of the storage portion S. The front side of the storage unit S is closed through a removable cover plate (not shown). By removing the cover plate, the shutter member 41, the guide roller 42, the wire 43, and the guide pulley 43a in the storage unit S are removed. The weight 44 can be visually inspected as necessary.

  The shutter member 41 is configured in a slat chain shape that flexibly connects a large number of slat pieces 41a, 41a, and left and right link pieces 41b, 41b through connecting pins 41c, 41c, and so on (FIG. 18, FIG. 19). However, the slat pieces 41a, 41a,... Are alternately connected to those having the supporting legs 41a1 on the lower surface (FIG. 20). A connecting piece 41d having a long hole 41d1 is attached to the sliding member 20 side of the shutter member 41 (FIGS. 18 and 19), and the shutter member 41 has a bolt 41e inserted through the long hole 41d1 connected to the sliding door 20 side. By being screwed into the bracket 41f, the sliding door 20 is connected to the lower end of the sliding door 20 so as to be relatively movable back and forth.

  The shutter member 41 is movably supported via support members 45 and 46 installed in the lower frame 14 (FIGS. 19 and 21). However, FIGS. 21A and 21B are respectively an enlarged cross-sectional view corresponding to the line X5-X5 in FIG. 17 and an enlarged cross-sectional view corresponding to FIG. The support members 45 and 46 extend over the entire width of the opening A, and support the support legs 41a1, 41a1,... Of the shutter member 41 and the one link piece 41b, 41b. Can be supported horizontally with the upper surface of the lower frame 14. Therefore, the shutter member 41 can close the groove D on the floor F side below the sliding door 20 that opens upward between the lower frame 14 and the upper end surface of the shield panel B in the opening A. However, the groove D is provided to accommodate the lower end portion of the sliding door 20, and in FIG. 21, the floor F is illustrated at the same level as the upper surface of the lower frame 14 in the opening A and the upper end surface of the shield panel B. Has been.

  When the sliding member 20 is driven in the opening direction, the shutter member 41 is pulled out from the storage portion S, and can close the groove D of the opening A that extends from the door tip side of the sliding door 20 to the frame 12 on the door tip side. Further, when the sliding door 20 is driven in the closing direction, the shutter member 41 can be retracted through the weight 44 while being bent upward into the storage portion S and stored in the storage portion S. Note that the shutter member 41 has no problem even when the sliding door 20 in the fully closed position is translated backward to complete the electromagnetic shield. This is because the sliding door 20 can be moved back and forth relative to the shutter member 41 via the long hole 41d1 of the connecting piece 41d of the shutter member 41.

  In the above description, the link pieces 41b, 41b... Of the slat chain type shutter member 41 may be replaced with thin plate members as long as necessary strength is obtained. The floor shutter device 40 for sliding doors is not limited to an electromagnetic shield door, but can be applied to sliding doors of a wide general type of hanging doors, door carts, sliding types, etc. The shutter member 41 at this time is a sliding door. However, it is not necessary to connect them so that they can move relative to each other.

Overall configuration front view (1) Overall configuration front view (2) X1-X1 line arrow equivalent enlarged sectional view of FIG. Main part enlarged front view (1) Expanded cross-sectional view of the main part (1) Main part enlarged front view (2) Expanded cross-sectional view of the main part (2) X2-X2 line arrow equivalent enlarged sectional view of FIG. Expanded cross-sectional view of the main part (3) X3-X3 line arrow equivalent enlarged sectional view of FIG. Operation explanatory diagram equivalent to FIG. Operation explanatory diagram equivalent to FIG. Operation explanatory diagram equivalent to FIG. Explanation of operation equivalent to FIG. Operation explanatory diagram equivalent to FIG. Operation explanatory diagram equivalent to FIG. FIG. 1 equivalent view showing another embodiment 17 is an enlarged plan view of the main part of FIG. X4 arrow equivalent view of FIG. Exploded perspective view of essential parts of shutter member 17 is an explanatory diagram of the main part configuration of FIG.

Explanation of symbols

F ... Floor D ... Groove A ... Opening S ... Storage part 10 ... Door frame 12 ... Reed frame 19 ... Engagement rib 20 ... Sliding door 21d, 24d ... Spring 25 ... Gasket 31 ... Operation handle 36 ... Lock member 40 ... Floor shutter Device 41 ... Shutter member 43 ... Wire 43a ... Guide pulley 44 ... Weight

Patent Applicant Fuji Seiko Head Office
Attorney Tadaaki Matsuda, Attorney

Claims (6)

  A door frame and a sliding door of a hanging door type incorporated in the door frame, and a gasket for electromagnetic shielding is continuously attached to the sliding door along the four circumferences on the rear surface side. A first engaging member that can be moved up and down on the upper and lower sides of the butt side and an operation handle that moves the first engaging member up and down at the same time are mounted, and the sliding door is fully closed on the door frame. When in the position, the first engagement member individually arranges the second engagement member, and the sliding door moves the first engagement member through the operation handle in the fully closed position. A sliding door type electromagnetic shield door characterized in that the electromagnetic shield is completed by being parallelly moved rearward by being engaged with a second engagement member, and pressing the entire length of the gasket against the four engagement ribs of the opening. .   The sliding door type electromagnetic shield door according to claim 1, wherein the sliding door is biased forward through a spring.   The sliding door type electromagnetic shield door according to claim 1 or 2, wherein the sliding door is restrained so as not to be opened by translating backward in a fully closed position.   The sliding door type according to any one of claims 1 to 3, wherein the sliding door is mounted with a lock member that prohibits raising and lowering of the first engaging member in a full opening / closing stroke excluding a fully closed position. Electromagnetic shield door.   A shutter member that can be bent up and down is connected to the lower end of the sliding door on the door-end side so as to be relatively movable back and forth, and the shutter member faces upward in a storage portion in the frame on the door-end side of the door frame. 5. The sliding door type electromagnetic shielding door according to claim 1, wherein the sliding door type electromagnetic shielding door is stored while being bent.   A shutter member that can be bent up and down to connect one end to the lower end of the sliding door door side, a storage portion that is formed on the door tip side of the door frame for the sliding door, and stores the shutter member while bending upward, And a weight connected to the tip of the shutter member via a wire that hangs on a guide pulley on the upper portion of the storage portion, and the shutter member receives the storage via the weight when the sliding door is driven in the closing direction. A floor shutter device for a sliding door, wherein the floor shutter device is pulled out from the storage portion and closes a groove on a floor side below the sliding door when the sliding door is pulled in and driven in the opening direction.

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