JP2009097229A - Shutter device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shutter device by which a fully closed state of a shutter curtain can be obtained even when the parts of a sheet inserted into the right and left guide members do not smoothly move downward. <P>SOLUTION: In the shutter device, the shutter curtain 12 is moved to be opened and closed in a vertical direction by being guided by the guide rails 5, which is the right and left guide members, and a lower part of the curtain 12 on the closing side, at least, is formed to be a sheet part 30 which is formed of a sheet member. The sheet part 30 is formed to include first and second sheet members 31, 32. The whole of the first sheet member 31 is exposed from the guide rails 5 and has an area larger than that of the second sheet members 32. The second sheet members 32 arranged on the right and left guide rails 5, respectively, comprise the parts inserted into the guide rails 5 and the parts exposed from the guide rails 5. The first and second sheet members 31, 32 have overlapping parts 31C, 32C mutually overlapping in a direction of the thickness of the curtain 12. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a shutter device in which a shutter curtain is guided by left and right guide members to open and close in the vertical direction. For example, a shutter device for disaster prevention (including a lift device such as an elevator), an entrance / exit The present invention can be used for a shutter device for various uses such as an opening shutter device and a window shutter device installed in an opening.

The following Patent Document 1 and Patent Document 2 have left and right guide members and a shutter curtain that is guided by these guide members and opens and closes in the vertical direction, and is at least on the closed side of the shutter curtain. A shutter device is shown in which the lower portion is a sheet portion formed of a sheet. In these shutter devices, the shutter curtain moves downwardly from the fully open position to the fully closed position because the portion of the seat portion that is slidably inserted into the left and right guide members is the left and right guide members. It is done by being guided.
JP 2001-173333 A JP 2002-327586 A

  When the shutter curtain is closed and moved downward, for example, if there is an obstacle on the lower side of the shutter curtain, the sheet will bend due to the shutter curtain hitting this obstacle. As a result of bending of the sheet portion due to bending occurring inside the guide member, the portion of the sheet portion that is slidably inserted inside the left and right guide members will not move smoothly downward, and as a result, Even if the obstacle is removed, the portion of the seat portion inserted into the left and right guide members does not move downward, and the shutter curtain cannot be fully closed.

  In such a situation, a stop portion for stopping the downward movement of the shutter curtain when the shutter curtain is fully closed is disposed inside the left and right guide members. This occurs remarkably when the structure is such that the downward movement of the sheet portion in which a bent portion or the like is generated is hindered.

  An object of the present invention is to ensure that the shutter curtain is fully closed even if the portion of the seat portion that is slidably inserted into the left and right guide members does not move downward smoothly. Is to provide a shutter device.

  The shutter device according to the present invention includes left and right guide members, and a shutter curtain that is guided by these guide members and that opens and closes in the vertical direction. In the shutter device in which the portion is a sheet portion formed of a sheet, the sheet portion is formed including a first sheet member and a second sheet member arranged side by side in the left-right direction, and the first sheet member Does not have a portion inserted into the left and right guide members, the whole is exposed from the guide members, and has a larger area than the second sheet member. A two-sheet member is provided for each of the left and right guide members, a portion inserted into the guide member, and the guide member And the first sheet member and the second sheet member include overlapping portions that overlap each other in the thickness direction of the shutter curtain. is there.

  In this shutter device, when the shutter curtain is closed, for example, there is an obstacle under the shutter curtain, and the first sheet member may bend due to the first sheet member hitting the obstacle. However, since the first sheet member does not have a portion inserted into the left and right guide members and the whole is exposed from these guide members, the first sheet member is first when the obstacle is removed. The sheet member moves smoothly downward, thereby ensuring the fully closed state of the shutter curtain.

  In addition, the portion of the second sheet member exposed from the guide member hits the obstacle, thereby causing a bending or the like in the portion of the second sheet member inserted into the guide member. As a result, Even if the second sheet member does not move downward and the obstacle is removed, the second sheet member does not move downward, and the shutter sheet is fully closed by the first sheet member moved downward. Can do.

  Moreover, since the 1st sheet member and the 2nd sheet member are provided with the superposition | polymerization part which mutually overlaps in the thickness direction of a shutter curtain, the shielding property of a shutter curtain can be ensured.

  In the present invention described above, the first sheet member has a larger area than the second sheet member provided for each of the left and right guide members, and in order to realize the shutter curtain blocking property, the second sheet As long as the overlapped portion is provided in the thickness direction of the member and the shutter curtain, it may be of any size. For example, the left and right width dimensions of the first sheet member are set between the left and right guide members. The dimension is the same as or slightly smaller than the inner width dimension.

  According to this, since the first sheet member occupies substantially the entire width of the shutter curtain, the fully closed state of the shutter curtain can be more reliably ensured. “The left and right width dimension of the first sheet member is set to be slightly smaller than the inner width dimension between the left and right guide members” means “a slight gap between the first sheet member and each guide member. It may mean. "

  The first sheet member and the second sheet member may each be formed by a single sheet, or may be formed by a plurality of sheets joined together by sewing or the like. The first sheet member may be formed by arranging a plurality of sheets in the left-right direction with overlapping portions and separating these sheets in the left-right direction. Furthermore, the first sheet member may have an opening that is normally covered by a cover sheet member that can be turned freely. For example, the opening may pass through when the shutter curtain is fully closed. It can be used for use.

  Further, the left and right guide members may be fixedly installed on a stationary member such as a building frame, and at least one of these guide members is used to open and close the shutter curtain in the vertical direction. Along with this, it may be foldable and unfoldable, or may be attached and detached manually.

  Furthermore, the shutter curtain of the shutter device according to the present invention may be the sheet portion formed so as to include the first sheet member and the second sheet member, or the entire sheet portion or the sheet portion. Further, it may be disposed on the upper side of the sheet portion and may have a hard portion formed of a material harder than the first and second sheet members.

  The member forming the hard portion in the latter may be any member as long as it is a member formed of a material harder than the first and second sheet members, for example, a slat, a panel, a pipe, or the like. Good. In addition, the connecting member that connects the first and second sheet members with the member forming the hard portion such as the slat is formed of a hard material such as metal that is harder than the first and second sheet members. When it exists, you may include the connection member formed with hard materials, such as this metal, in the said hard part.

  Further, as in the latter case, the shutter curtain has the sheet portion and a hard portion that is disposed on the upper side of the sheet portion and is formed of a material harder than the first and second sheet members. In the left and right guide members, when the shutter curtain is fully closed, a stop portion may be arranged to abut against the hard portion and stop the downward movement of the shutter curtain. Also good.

  If such a stop part is arranged, the shutter curtain can be more reliably stopped at the fully closed position by the stop part coming into contact with the hard part by the downward movement of the shutter curtain.

  In addition, when the left and right guide members are provided with stop portions for stopping the closing movement of the shutter curtain by contacting the hard portion when the shutter curtain is fully closed, It is preferable that the portion is arranged inside the left and right guide members, and the arrangement position thereof is a position opposite to the arrangement position of the second sheet member with respect to the first sheet member in the thickness direction of the shutter curtain.

  According to this, since the first sheet member intervenes between the second sheet member and the stop portion, the interval between the second sheet member and the stop portion in the thickness direction of the shutter curtain is set to the first sheet. Even if a bent part or the like occurs in the second sheet member that hits the obstacle when the shutter curtain is closed and moved downward, the bent part or the like can be increased by the thickness of the member. The possibility of being sandwiched between the hard part and the stop part can be suppressed.

  Of the first sheet member and the second sheet member, at least the first sheet member may or may not be provided with a seat plate member that is landed when the shutter curtain is fully closed.

  If a seat plate member that is landed when the shutter curtain is fully closed is provided on the first sheet member, a fully closed state of the shutter curtain by the first sheet member can be obtained more reliably.

  Further, in the case where a seat plate member that is landed when the shutter curtain is fully closed is provided on the first sheet member, the shutter curtain is fully closed on the first sheet member below the seat plate member. When it becomes, the bending deformation part which bends and deform | transforms may be provided, and it is not necessary to provide.

  If the first sheet member is provided below the seat plate member with a bending deformation portion that bends and deforms when the shutter curtain is fully closed, the bending deformation that deforms and deforms the floor is provided. Since the portion can prevent a gap from being generated between the first sheet member and the floor, the fully closed state of the shutter curtain by the first sheet member can be obtained even more reliably.

  Further, in the shutter device according to the present invention, the sheet portion is formed including a third sheet member disposed on the side opposite to the position where the first sheet member is disposed with respect to the second sheet member in the thickness direction of the shutter curtain. The third sheet member does not have a portion inserted into the left and right guide members and is entirely exposed from these guide members, and the first sheet member and the second sheet member It is good also as what has the width dimension of the left-right direction which straddles the boundary part.

  According to this, the boundary portion between the first sheet member and the second sheet member is closed by the third sheet member, and therefore, the shutter curtain can be improved in shielding property.

  This third sheet member may or may not be provided with a seat plate member that is landed when the shutter curtain is fully closed.

  If a seat plate member that is to be landed when the shutter curtain is fully closed is provided on the third sheet member, it becomes possible to ensure a blocking property between the third sheet member and the floor.

  Further, when the third sheet member is provided with a seat plate member that is landed when the shutter curtain is fully closed, the shutter curtain is fully closed on the third sheet member below the seat plate member. When it becomes, the bending deformation part which bends and deform | transforms may be provided, and it is not necessary to provide.

  If the third sheet member is provided with a bending deformation portion that is bent and deformed when the shutter curtain is fully closed on the lower side of the seat plate member, the bending deformation that is bent and deformed is landed. Since it is possible to prevent a gap from being generated between the third sheet member and the floor by the portion, it is possible to further ensure the blocking property between the third sheet member and the floor.

  In the above, the seat plate member provided on the first sheet member, the second sheet member, and the third sheet member may be a flat bar, may have an inverted T-shaped cross section, may have an L-shaped cross section, Any shape may be used. When the seat plate is made of a flat bar, for example, by forming a bag portion in the first sheet member, the second sheet member, and the third sheet member, and storing the flat bar inside the bag portion, A seat plate member can be provided on the first sheet member, the second sheet member, or the third sheet member.

  Further, when the above-described bending deformation portion is provided in the first sheet member and the third sheet member, for example, the sheet member is bent and deformed by attaching the sheet member to the lower portion of the first sheet member and the third sheet member. Part. Further, the sheet member may be in a single sheet state that is not folded, or may be folded into a two sheet state.

  The present invention described above can be applied to a disaster prevention shutter device for forming a disaster prevention section with a shutter curtain, and also applied to an opening shutter device, a window shutter device, etc. installed in an opening such as an entrance / exit. In addition, the disaster prevention shutter device includes one for lifting means such as an elevator, an escalator, and a staircase.

  Also, in these shutter devices, when an obstacle comes into contact with the lower end portion of the shutter curtain when closing and moving downward, this obstacle is detected, and the shutter curtain closing movement is stopped. The obstacle detection device may or may not be equipped.

  Furthermore, the shutter device according to the present invention may be of a type in which the shutter curtain is wound around a winding shaft and stored, or, for example, as an overhead door, the shutter curtain is in a shape as it is or in a curved shape. It may be of a type that is slightly deformed and stored.

  Furthermore, the shutter device to which the present invention is applied may be of a self-weight drop type in which the shutter curtain is moved downward by its own weight, and the shutter curtain is opened and moved downward. A manual type in which both the closing movement and the closing movement are performed manually may be used, and an automatic type in which both of them are performed by a driving force such as electric power may be used. Further, when the shutter device to which the present invention is applied as described above is of a self-weight drop type in which the downward movement of the shutter curtain is performed by the dead weight of the shutter curtain, the shutter curtain is opened upward. The movement may be performed manually (including a case where the spring force accumulated in the return spring during the closing movement downward is used as an auxiliary), or may be performed by a driving force such as electric power. .

  According to the present invention, among the seat portions forming the lower portion that is at least the closed side of the shutter curtain, the portion that is slidably inserted into the left and right guide members moves smoothly downward. Even without this, it is possible to obtain the effect of ensuring the fully closed state of the shutter curtain.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated based on drawing. The shutter device according to the present embodiment is a disaster prevention shutter device for forming a disaster prevention section in a space of a structure such as a building or an underground shopping street by a shutter curtain.

  FIG. 1 is a front view showing the whole disaster prevention shutter device. In the ceiling back space K2 partitioned from the indoor space K1 by the ceiling member 1, the winding shaft 10 of the shutter device for disaster prevention is arranged horizontally or substantially horizontally. The winding shaft 10 is arranged in the ceiling back space K2. Are supported by the left and right brackets 11 coupled to the building housing 2 existing in a freely rotating manner. The shutter curtain 12 whose upper end is connected to the winding shaft 10 is suspended from the slit of the lintel member 3 provided in the ceiling member 1 into the indoor space K1 and is in the width direction of the shutter curtain 12. Since both end portions in the left-right direction of 12 are inserted in a guide rail 5 attached to a building housing 4 such as a pillar or wall standing in the indoor space K1, the shutter curtain 12 By the forward and reverse rotation of the winding shaft 10, the opening and closing movements in the vertical direction are performed while being guided by these left and right guide rails 5 serving as guide members.

  One of the left and right brackets 11 is attached with an opening / closing machine 13 including an electric motor and a brake, and the drive shaft of the opening / closing machine 13 includes transmission means 14 including a sprocket wheel and a chain. And is connected to the take-up shaft 10. When the front end of the shutter curtain 12 on the closed side, in other words, the lower end of the shutter curtain 12 reaches the position of the lintel member 3, the shutter curtain 12 is fully opened.

  Thus, when the shutter curtain 12 is fully open, the brake of the opening / closing machine 13 is on, so that the shutter curtain 12 is substantially entirely wound around the winding shaft 10 and maintains the fully open position. ing. When the occurrence of a fire is detected by a sensor such as a smoke detector (not shown), the brake of the switch 13 is turned off by a control device to which a signal from this sensor is input, or during maintenance work of the shutter device for disaster prevention, etc. When the operator operates a manual operation device (not shown), the brake of the switch 13 is turned off, so that the shutter curtain 12 is fed out from the winding shaft 10 while rotating the winding shaft 10 by its own weight. Thus, the shutter curtain 12 closed and moved downward reaches the fully closed position when the lower end of the shutter curtain 12 reaches the floor 6 of the indoor space K1. FIG. 1 shows the time when the shutter curtain 12 has reached this fully closed position.

  When a switch device (not shown) is operated, the electric motor of the opening / closing machine 13 is driven, whereby the shutter curtain 12 is wound around the winding shaft 10 that rotates in the reverse direction to move upward, and below the shutter curtain 12. When the tip of the side reaches the height position of the lintel member 3, the electric motor of the switch 13 is stopped and the brake is turned on by the control device to which a signal from the sensor that detects this is input.

  The shutter curtain 12 according to the present embodiment includes a hard portion 20 that occupies a large area in the downward direction from the upper end connected to the winding shaft 10, and a lower side of the hard portion 20, that is, a closed side of the shutter curtain 12. It consists of the combination with the sheet | seat part 30 arrange | positioned at the lower part. The hard portion 20 is formed by a slat continuous body in which a plurality of slats 21 made of steel plates having fire resistance are connected vertically, and the sheet portion 30 is formed by a plurality of sheet members. These sheet members are formed of a fire-resistant silica cloth or glass cloth in which a fire-resistant paint is applied and / or impregnated, and can be flexibly deformed.

  The seat portion 30 includes one first sheet member 31, two second sheet members 32 provided for the left and right guide rails 5, and two third sheets provided for the left and right guide rails 5. The first to third sheet members 31 to 33 are formed so as to be shifted in the thickness direction of the shutter curtain 12 by the thickness of the sheet members 31 to 33. Moreover, the slat 21 forming the hard portion 20 is formed of a metal that is harder than the respective sheet members 31 to 33 and has fire resistance.

  FIG. 2 is a cross-sectional view taken along line S2-S2 of FIG. 1, and FIG. 2 shows a connection structure between the hard portion 20 and the seat portion 30. Of the slats 21 forming the hard portion 20, a horizontal beam member 34 is disposed on the lowermost slat 21 </ b> A and has a length extending in the width direction of the shutter curtain 12. Both end portions of the slats 21 are inserted into the left and right guide rails 5 in the same manner as both end portions of the respective slats 21. The crosspiece member 34 includes an upper flat portion 34A and a lower channel shape portion 34B continuous with the flat portion 34A. The curled portion 21B of the slat 21A is accommodated in the channel shape portion 34B, and the opening side of the channel shape portion 34B is directed to the first to third sheet members 31 to 33. The slat 21A is applied to the flat portion 34A of the crosspiece member 34, and the upper portions of the first to third sheet members 31 to 33 are applied to the slat 21A. And the upper part of these slats 21A and the 1st-3rd sheet members 31-33 is reinforced with the reinforcing member 35, and is couple | bonded with the volt | bolt 36A and the nut 36B.

  Accordingly, the slat 21A forming the hard portion 20 and the first to third sheet members 31 to 33 forming the seat portion 30 are connected by the crosspiece member 34, the reinforcing member 35, the bolt 36A, and the nut 36B. Accordingly, the crosspiece member 34, the reinforcing member 35, the bolt 36A, and the nut 36B are connecting members for connecting the hard portion 20 and the seat portion 30 and are constituent members of the seat portion 30. Since the first to third sheet members 31 to 33 are formed of a metal that is harder than the first to third sheet members 31 to 33, the crosspiece member 34, the reinforcing member 35, the bolt 36 </ b> A, and the nut 36 </ b> B are also members that form the hard portion 20. Yes.

  For this reason, among the first to third sheet members 31 to 33, the portion below the crosspiece member 34 and the reinforcing member 35 is a portion that substantially forms the sheet portion 30 of the shutter curtain 12, The portion above the substantial portion of the sheet portion 30 is a portion that substantially forms the hard portion 20 of the shutter curtain 12.

  3 is a cross-sectional view taken along line S3-S3 of FIG. As shown in FIG. 3, both end portions 31 </ b> A and 31 </ b> B of the first sheet member 31 in the width direction of the shutter curtain 1 reach the vicinity of the left and right guide rails 5. Is not inserted. In other words, the first sheet member 31 has a lateral width dimension that is the same as or slightly smaller than the inner width dimension between the left and right guide rails 5. For this reason, the first sheet member 31 does not have a portion inserted into the left and right guide rails 5 and is entirely exposed from these guide rails 5. Further, the first sheet member 31 has a larger area than the respective second sheet members 32 arranged in the left-right direction with respect to the first sheet member 31. The end 32A on the outer side in the width direction of the shutter curtain 12 in the second sheet member 32 is inserted into the guide rail 5 and the end 32B on the inner side in the width direction of the shutter curtain 12 is outside the guide rail 5. It protrudes. For this reason, each second sheet member 32 includes a portion inserted into the guide rail 5 and a portion exposed from the guide rail 5.

  In addition, the thickness of the shutter curtain 12 includes the first sheet member 31 and each of the second sheet members 32 disposed so as to be shifted in the thickness direction of the shutter curtain 12 with respect to the first sheet member 31. Overlapping portions 31C, 32C are provided that overlap each other in the direction. These overlapping portions 31C and 32C are not connected to each other except for the portion where the crosspiece member 34 and the reinforcing member 35 are connected, and are separable.

  Furthermore, the third sheet member 33 provided for each of the left and right guide rails 5 is smaller than the first sheet member 31 and larger than the second sheet member 32, in other words, the horizontal dimension. Each of the third sheet members 33 has a dimension in the width direction of the shutter curtain 12, and each third sheet member 33 is opposite to the arrangement position of the first sheet member 31 with respect to the second sheet member 32 in the thickness direction of the shutter curtain 12. Arranged on the side. Further, as shown in FIG. 3, the horizontal dimension of the third sheet member 33 disposed near the guide rail 5 is the end 32B of the second sheet member 32 on the inner side in the width direction of the shutter curtain 12. The end portion 32B is a boundary portion between the first sheet member 31 and the second sheet member 32. Therefore, the third sheet member 33 is connected to the first sheet member 31 and the second sheet member 32. It has the width dimension of the left-right direction straddling the boundary part with the sheet | seat member 32. FIG.

  The entirety of each third sheet member 33 is exposed from the guide rail 5, and therefore, the third sheet member 33 does not have a portion inserted into the guide rail 5. The third sheet member 33 also includes the first and second sheet members 31, 32 except for the portion where the crosspiece member 34 and the reinforcing member 35 are arranged, which is coupled to the first and second sheet members 31, 32. They are not coupled and can be separated from the first and second sheet members 31 and 32.

  Note that a portion of the second seat member 32 inserted into the guide rail 5 may be provided with a means for preventing the slipping out by a bolt, a nut or the like for preventing the slipping out of the guide rail 5.

  As shown in FIG. 2, in each guide rail 5, a stop member 37 for stopping the shutter curtain 12 from being lowered when the shutter curtain 12 is lowered to the fully closed position is fixedly housed. ing. These stop members 37 are in the form of columns formed by rod-shaped members and are erected from the floor 6 inside the guide rail 5. Further, as shown in FIG. 3, the arrangement positions of these stop members 37 are positions on one side in the thickness direction of the shutter curtain 12 inside the guide rail 5. The position of the one side portion may be the same position as the arrangement position of the second sheet member 32 with respect to the first sheet member 31 in the thickness direction of the shutter curtain 12, but in this embodiment, the thickness of the shutter curtain 12 is The second sheet member 32 is positioned opposite to the first sheet member 31 in the vertical direction.

  Further, as shown in FIG. 2, the height dimension of the stop member 37 is the lower surface of the channel-shaped portion 34B of the crosspiece member 34 when the shutter curtain 12 reaches the fully closed position from the floor 6. It corresponds to the distance up to. Therefore, when the lower ends of the first to third sheet members 31 to 33 forming the shutter curtain 12 come into contact with the floor and the shutter curtain 12 is fully closed, the hard portion 20 of the shutter curtain 12 is formed. The lower surface of the channel shape portion 34 </ b> B of the horizontal beam member 34 that is a member to be mounted is placed on the upper surface of the stop member 37. For this reason, this upper surface serves as a stop portion 37 </ b> A for contacting the hard portion 20 when the shutter curtain 12 is fully closed to stop the downward movement of the shutter curtain 12.

  Further, the stop member 37 of the present embodiment is provided with a guide surface 37B that is continuous with the stop portion 37A and is inclined downward toward the first to third sheet members 31 to 33 side of the shutter curtain 12. It has been.

  As described above, the stop member 37 having a dimension in the thickness direction of the shutter curtain 12 is arranged at one side of the guide curtain 5 in the thickness direction of the shutter curtain 12 (see also FIG. 3). Thus, as shown in FIG. 2, the width of the shutter curtain 12 in the thickness direction in the thickness direction of the shutter curtain 12 is increased inside the guide rail 5 above the stop portion 37 </ b> A of the stop member 37. A portion 38A is formed, and a narrow portion 38B is formed below the stop portion 37A of the stop member 37. When the shutter curtain 12 is fully closed, the hard portion 20 of the shutter curtain 12 whose dimension in the thickness direction of the shutter curtain 12 is increased is inserted into the wide portion 38A, and the thickness of the shutter curtain 12 is increased. Since the sheet part 30 of the shutter curtain 12 whose direction dimension is small is inserted into the narrow part 38B, when the disaster prevention section is formed by the shutter curtain 12 that has reached the fully closed position due to the occurrence of a fire, the guide It is possible to effectively suppress smoke from passing through the inside of the rail 5. In other words, the smoke shielding property inside the guide rail 5 is improved.

  As shown in FIG. 2, a bag portion 39 is formed by folding the sheet member 31 at the lower end of the first sheet member 31, and the shutter curtain 12 is fully closed inside the bag portion 39. A seat plate member 40 that is landed on the floor 6 when stored is housed. The seat plate member 40 which is a weight member of the first sheet member 31 is a metal flat bar in this embodiment.

  Further, as shown in FIG. 1, the bag portion 39 of the present embodiment is formed by a plurality of short bag portions 39 </ b> A that are partitioned from each other in the left-right direction that is the width direction of the shutter curtain 12. The size bag portion 39A includes a contact member 41 also shown in FIG. 5, a bolt 42 inserted through the contact member 41 and the bag portion 39, and a nut screwed into the protruding end of the bolt 42. A part of the bag portion 39 is crushed to partition the bag portion 39. The seat plate member 40 is also formed by the short seat plate member 40A accommodated in a divided state for each short bag portion 39A.

  If a fire occurs when the shutter curtain 12 is fully open, as described above, the brake of the switch 13 shown in FIG. 1 is turned off, so the shutter curtain 12 rotates the winding shaft 10 by its own weight. And begin to move downward. When the lower end portions of the first to third sheet members 31 to 33 having the same vertical dimension reach the height position of the upper surface of the stop member 37 due to the closing movement, the end portions in the width direction of the shutter curtain 12 are moved. The lower end portion of the second sheet member 32 inserted into the guide rail 5 is guided by the guide surface 37B inclined downward of the stop member 37 and smoothly guided to the narrow portion 38B inside the guide rail 5. When the shutter curtain 12 is fully closed when the lower ends of the first to third sheet members 31 to 33 are in contact with the floor 6, the hard portion 20 of the shutter curtain 12 is formed as described above. When the stop portion 37A, which is the upper surface of the stop member 37, is in contact with the lower surface of the channel-shaped portion 34B of the horizontal beam member 34, the shutter curtain 12 is moved downward. Closing movement is stopped.

  As described above, when the lower end portions of the first to third sheet members 31 to 33 contact the floor 6 and the shutter curtain 12 is fully closed, as described above, the first sheet member 31 and the second sheet member 32. Since the overlapping portions 31C and 32C overlap in the thickness direction of the shutter curtain 12, the shutter curtain 12 has a sufficient shielding property. Further, the third sheet member 33 has a width dimension in the left-right direction straddling the boundary portion between the first sheet member 31 and the second sheet member 32, and this boundary portion is blocked by the third sheet member 33. Therefore, sufficient shielding property of the shutter curtain 12 is ensured more effectively.

  On the other hand, the obstacle 50 shown in FIG. 5 exists under the shutter curtain 12 during the closing movement of the shutter curtain 12, and the lower end portion of the first sheet member 31 is placed on the obstacle 50 on the floor 6. When hit, the seat plate member 40 of the first sheet member 31 is formed by a plurality of short seat plate members 40A arranged in a divided state in the width direction of the shutter curtain 12, A gap S generated between the lower end portion of the first sheet member 31 and the floor 6 can be reduced.

  In particular, in the present embodiment, the entire first sheet member 31 is exposed from the left and right guide rails 5 and does not have a portion inserted into the guide rails 5, so that the obstacle 50 is removed. As a result, the first sheet member 31 smoothly moves downward, whereby the shutter curtain 12 can be fully closed.

  Further, the obstacle 50 is located at a position close to one of the left and right guide rails 5. For this reason, during the closing movement of the shutter curtain 12, the first to third sheet members 31 to 33 are moved. When the obstacle 50 hits the lower end portion, the sheet members 31 to 33 bend, and the left and right end portions of the sheet members 31 to 33 are inserted into the guide rail 5. As shown in FIG. 4, a bent portion 32D is generated in the sheet member 32, and the bent portion 32D may be sandwiched between the lower surface of the channel shape portion 34B of the crosspiece member 34 and the stop portion 37A.

  When such a situation occurs, even if the obstacle 50 is removed, the second sheet member 32 does not move downward, but in this embodiment, the shutter curtain 12 is larger than the second sheet member 32. The first sheet member 31 having an area is formed, and the first sheet member 31 does not have a portion inserted into the guide rail 5, so that the obstacle 50 is removed. Then, the first sheet member 31 smoothly moves downward, and the third sheet member 33 that does not have a portion inserted into the guide rail 5 is also moved downward by removing the obstacle 50. Thus, the shutter curtain 12 can be fully closed.

  Further, when the lower end portion of the first sheet member 31 hits the obstacle 50 on the floor 6, only the first sheet member 31 is bent, and the second sheet member 32 is A bent portion 32D that is sandwiched between the lower surface of the channel-shaped portion 34B of the crosspiece member 34 and the stop portion 37A does not occur.

  In particular, the first sheet member 31 of the present embodiment has the left and right width dimensions that are the same as or slightly smaller than the inner width dimension between the left and right guide rails 5. Thus, the shutter curtain 12 can be fully closed.

  Further, according to the present embodiment, the arrangement position of the stop portion 37 </ b> A inside the guide rail 5 is a position opposite to the arrangement position of the second sheet member 32 with respect to the first sheet member 31 in the thickness direction of the shutter curtain 12. Therefore, the distance between the second sheet member 32 and the stop portion 37A in the thickness direction of the shutter curtain 12 can be increased by the thickness of the first sheet member 31, and thus the shutter curtain Even when the bent portion 32D is formed in the second sheet member 32 that hits the obstacle 50 when the 12 is closed and moved downward, the bent portion 32D is the lower surface of the channel shape portion 34B of the crosspiece member 34. And the stop portion 37 </ b> A can be suppressed by the thickness of the first sheet member 31.

  FIG. 6 shows a third sheet member 133 according to another embodiment. The third sheet member 133 of this embodiment does not have a portion inserted into the left and right guide rails 5 as in the case of the third sheet member 33 of the above-described embodiment, and the entire guide rail 5 The left and right width dimensions are the same as or slightly smaller than the inner width dimension between the left and right guide rails 5 as well as the first sheet member 31 of the above embodiment.

  And the 3rd sheet member 133 of this embodiment also has the dimension of the horizontal direction straddling the boundary part of the 1st sheet member 31 and the 2nd sheet member 32.

  According to this embodiment, the first sheet member 31 for ensuring the fully closed state of the shutter curtain 12 is substantially the same as that provided by the third sheet member 133, and therefore the shutter curtain Thus, the 12 fully closed state can be more effectively secured.

  FIG. 7 shows an embodiment of second and third sheet members 232 and 233 in which seat plate members 60 and 70 similar to the seat plate member 40 of the first sheet member 31 are provided at the lower end portion. FIG. 7 shows the first to third sheet members 31, 232, and 233 separated from the shutter curtain 12 in the thickness direction so that the seat plate members 40, 60, and 70 can be clearly understood.

  The seat plate members 60 and 70 of the second and third sheet members 232 and 233 are formed by folding the second and third sheet members 232 and 233 in the same manner as the seat plate member 40 of the first sheet member 31. It is housed inside the part 239.

  When the shutter curtain 12 reaches the fully closed position, the seat plate members 60 and 70 of the second and third sheet members 232 and 233 land on the floor 6 in the same manner as the seat plate member 40 of the first sheet member 31. The fully closed state of the shutter curtain 12 can be ensured more effectively than in the above embodiment.

  FIG. 8 shows that the first and third sheet members 31 and 233 in the embodiment of FIG. 7 are bent and deformed when the shutter curtain 12 is fully closed below the seat plate members 40 and 70. The embodiment which provided the bending deformation parts 80 and 90 which land on the floor 6 is shown. According to this embodiment, the first and third sheet members 31 and 233 extend longer than the second sheet member 232 by the bending deformation portions 80 and 90 that are bent and deformed and land on the floor 6. Therefore, when the shutter curtain 12 is fully closed, it is possible to more reliably prevent a gap from being generated between the first and third sheet members 31 and 233 and the floor 6. The closing property between the first and third sheet members 31 and 233 and the floor 6 at the time of closing can be ensured more reliably, and the shielding property by the shutter curtain 12 can be further improved.

  In addition, the bending deformation parts 80 and 90 of the embodiment of FIG. 8 are substantially the same as those formed by two sheets by folding a single sheet. It is not limited, For example, you may form by one sheet | seat which is not bent.

  Further, in each of the embodiments described above, the second sheet members 32 and 232 may be arranged on the evacuation destination side of the refugee from the fire in the thickness direction of the shutter curtain 12 with respect to the first sheet member 31. preferable. According to this, even if the first sheet member 31 having a large area receives pressure in the thickness direction of the shutter curtain 12 due to fire smoke or the like, a part of the first sheet member 31 is inserted into the left and right guide rails 5. The left and right sides of the first sheet member 31 can be received by the second sheet members 32, 232, thereby preventing the first sheet member 31 from being greatly bent in the thickness direction of the shutter curtain 12. It is possible to prevent a gap from being generated between the sheet member 31 and the second sheet members 32 and 232.

  The present invention relates to various shutter devices including a disaster prevention shutter device in which a shutter curtain is opened and closed in a vertical direction guided by left and right guide members, and an opening shutter device installed in an opening of an entrance and the like. Can be used for

FIG. 1 is a front view showing the entirety of a shutter device for disaster prevention according to an embodiment of the present invention, and is a view showing when a shutter curtain has reached a fully closed position. 2 is a cross-sectional view taken along line S2-S2 of FIG. 3 is a cross-sectional view taken along line S3-S3 in FIG. FIG. 4 is a view similar to FIG. 2 showing when a bent portion is generated in the second sheet member. FIG. 5 is a partially enlarged front view of the shutter curtain showing the shutter curtain closing and moving downward and the first sheet member hitting an obstacle. FIG. 6 is a view similar to FIG. 3 showing another embodiment of the third sheet member. FIG. 7 shows an embodiment in which a seat plate member similar to the seat plate member of the first sheet member in FIG. 2 is provided at the lower ends of the second and third sheet members. FIG. 8 is a view showing an embodiment in which a bending deformation portion is provided in the first and third sheet members.

Explanation of symbols

5 Guide rail as a guide member 12 Shutter curtain 20 Hard portion 30 Sheet portion 31 First sheet member 31C Superposition portion 32,232 Second sheet member 32B Second sheet which is a boundary portion between the first sheet member and the second sheet member Member end portion 32C Overlapping portion 33, 133, 233 Third sheet member 37 Stop member 37A Stop portion 40, 60, 70 Seat plate member 80, 90 Deflection deformed portion

Claims (10)

A sheet having left and right guide members and a shutter curtain that is guided by these guide members and that opens and closes in the vertical direction, and at least a lower portion of the shutter curtain that is on the closed side is formed of a sheet. In the shutter device that is
The sheet portion is formed to include a first sheet member and a second sheet member arranged in parallel in the left-right direction, and the first sheet member has a portion inserted into the left and right guide members. And the entire sheet is exposed from the guide members and has a larger area than the second sheet member. The second sheet member is provided for each of the left and right guide members. And a portion inserted into the guide member and a portion exposed from the guide member, and the first sheet member and the second sheet member have a thickness of the shutter curtain. A shutter device comprising superposed portions that overlap each other in a direction.   2. The shutter device according to claim 1, wherein the first sheet member has a left and right width dimension that is the same as or slightly smaller than an inner width dimension between the left and right guide members. apparatus.   3. The shutter device according to claim 1, wherein the shutter curtain is disposed on the upper side of the sheet portion and the sheet portion, and is formed of a harder material than the first and second sheet members. And a shutter device.   4. The shutter device according to claim 3, wherein the left and right guide members are a stop for contacting the hard portion when the shutter curtain is fully closed to stop the downward movement of the shutter curtain. 5. A shutter device characterized in that a part is arranged.   5. The shutter device according to claim 4, wherein the stop portion is disposed inside the left and right guide members, and the position of the stop portion is the second position with respect to the first sheet member in the thickness direction of the shutter curtain. A shutter device having a position opposite to a position where a sheet member is arranged.   6. The shutter device according to claim 1, wherein at least the first sheet member of the first sheet member and the second sheet member is worn when the shutter curtain is fully closed. A shutter device, characterized in that a floor plate member is provided.   The shutter device according to claim 6, wherein the first sheet member includes a bending deformation portion that is bent and deformed when the shutter curtain is fully closed on a lower side than the seat plate member. A shutter device characterized by being provided.   6. The shutter device according to claim 1, wherein the sheet portion is disposed on a side opposite to an arrangement position of the first sheet member with respect to the second sheet member in a thickness direction of the shutter curtain. The third sheet member is formed including the third sheet member, and the third sheet member does not have a portion inserted into the left and right guide members and is entirely exposed from the guide members. A shutter device having a width dimension in a left-right direction straddling a boundary portion between the first sheet member and the second sheet member.   9. The shutter device according to claim 8, wherein the third sheet member is provided with a seat plate member that is landed when the shutter curtain is fully closed.   10. The shutter device according to claim 9, wherein the third sheet member is bent and deformed when the shutter curtain is fully closed below the seat plate member of the third sheet member. A shutter device characterized by being provided with a flexural deformation portion for flooring.

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