JP4926508B2 - Switchgear - Google Patents

Description

  The present invention relates to an opening / closing device having an opening / closing body that opens and closes in the vertical direction, for example, a shutter device for disaster prevention for forming a disaster prevention area with a shutter curtain serving as the opening / closing body, and an opening such as an entrance / exit with the shutter curtain. The present invention can be used for opening and closing devices such as various shutter devices including an opening shutter device that opens and closes a part, a smoke proof curtain device, a smoke proof wall device, and a roll screen device.

In Patent Document 1 below, an opening / closing body that can be opened and closed in the vertical direction and whose downward direction is the closing movement direction is disposed on the closed side of at least a part of the hard portion and the hard portion. In addition, an opening / closing device configured to include at least a soft portion having flexibility in the vertical direction is shown.
JP 2002-327586 A (FIGS. 1 to 14, 26, 27, and 34)

  According to this conventional apparatus, the opening / closing body in which the lower direction is the closing movement direction includes the soft part disposed closer to the closing side than at least a part of the hard part, and the soft part is vertically movable. Because of the flexibility, even if the closing body that is closing and moving hits the object at the soft part during the closing movement, the opening and closing body and the object may be damaged by the bending of the soft part to the upper side of the hard part. Can be prevented.

  However, since the soft part itself has a weight, a load corresponding to this weight acts on the object, and in the case of a large span opening / closing body having a large width in the left-right direction, the soft part Since the weight of the object increases, the load acting on the object increases. Also, when a seat plate is provided at the end of the soft part on the closing side, the load acting on the object is increased.

  An object of the present invention is to provide an opening / closing device capable of reducing a load acting on an object even when the opening / closing body in a closing movement hits the object.

  The opening and closing device according to the present invention can be opened and closed in the vertical direction, the downward direction is the closing movement direction, and is disposed closer to the closed side than at least a part of the rigid portion, In an opening / closing apparatus having an opening / closing body configured to include at least a flexible portion having flexibility in the vertical direction, a pulling force for applying a lifting force smaller than the weight of the soft portion to the soft portion is applied. An upper device is provided.

  Since the opening / closing device includes a lifting device for applying a pulling force smaller than the weight of the soft portion to the soft portion constituting the opening / closing body, the opening / closing body when closing and moving Even if it hits the object in the soft part, the total weight of the soft part does not act on the object, and only the load obtained by subtracting the lifting force of the lifting device from the total weight of the soft part acts on the object. Since it can be reduced by the lifting force of the upper device, it is possible to more effectively prevent damage to the opening / closing body and the object than the conventional device.

  Since the lifting force of the lifting device is smaller than the weight of the soft part, the drooping property of the soft part from the hard part is ensured, and the fully closed state when the open / close body reaches the fully closed position can be secured. it can.

  Also, for example, when evacuating in the event of a fire or the like, if the soft part of the fully open / closed body is lifted to pass under the open / close body, the lifting device is lifted The force becomes an auxiliary force for lifting the soft part, and therefore, the lifting can be easily performed. Further, after passing, the soft part hangs down by its own weight, so that the opening / closing body can be returned to the fully closed state.

  In the configuration of the opening / closing device according to the present invention described above, “disposed on at least a part of the hard part” on the soft part means that the soft part is disposed on the close side of the hard part. Means that it may be arranged over the entire length in the left-right direction (width direction) of the hard part, or may be arranged only in a part of the entire length of the hard part in the left-right direction. An example of the latter case is a gate shape with the hard part opened downward, and a soft part is arranged in this opening part, and another example has a comb-teeth shape with the hard part opened downward, For example, a soft part is disposed in each opening. In these cases, the soft portion may be arranged so as to overlap the hard portion in the thickness direction of the opening / closing body.

  In the switchgear according to the present invention, a seat plate may or may not be provided at the closed end of the soft part. When the seat plate is provided at the closed end of the soft portion, it is preferable that the above-described pulling force of the lifting device is smaller than the weight of the soft portion including the weight of the seat plate. Thereby, even if the seat plate is provided at the front end of the soft part on the closing side, the same effect as described above can be obtained.

  The structure, principle, and the like of the lifting device that causes the lifting force to act on the soft portion are arbitrary. When the seat plate is provided at the closed end of the soft portion, for example, the pulling device is disposed on the hard portion and extends from the elastic mechanism means to the seat plate. And a connecting member that causes the elastic force of the elastic mechanism means to act upward on the seat plate. On the contrary, the pulling device is disposed on the seat plate and elastic mechanism means for generating elastic force, and extends from the elastic mechanism means to the hard portion, and the elastic force of the elastic mechanism means is directed upward on the seat plate. It can also be comprised including the connection member made to act on. In addition, you may couple | bond with the soft part instead of couple | bonding the edge part of the connection member extended from the elastic mechanism means to a seat plate or a hard part.

  What generates the elastic force of the elastic mechanism means in these cases may be a spring, rubber or a combination thereof. The spring may be a spiral spring including a mainspring spring, a coil spring, a leaf spring or the like.

  Further, the number of the lifting devices may be one, or may be a plurality arranged in the left-right direction and / or the up-down direction which are the width direction of the opening / closing body. If the number of lifting devices is a plurality arranged in the left-right direction, it can be effectively dealt with even if the lateral dimension (width dimension) of the opening / closing body is large. can do.

  Further, the dimension of the opening / closing body in the thickness direction of the soft part is smaller than the dimension of the opening / closing body in the thickness direction of the hard part, and the opening / closing body has an end in the left-right direction of the opening / closing body. When guided by the inserted guide member and can be freely opened and closed, a seal member that contacts the soft portion when the open / close body is fully closed or substantially fully closed is provided inside the guide member. It is preferable to arrange.

  According to this, even if the dimension in the thickness direction of the opening / closing body for the soft part is smaller than the dimension in the thickness direction of the opening / closing body for the hard part, the opening / closing body is in the fully closed position or the substantially fully closed position. When it reaches, the sealing member arranged inside the guide member is in contact with the soft part, so that it is possible to improve the blocking performance of the air passing through the inside of the guide member. Alternatively, it is possible to improve the blocking performance by the opening / closing body that has reached the substantially fully closed position.

  Further, the dimension of the opening / closing body in the thickness direction of the soft part is smaller than the dimension of the opening / closing body in the thickness direction of the hard part, and the opening / closing body has an end in the left-right direction of the opening / closing body. When guided by the inserted guide member and can be freely opened and closed, the left and right ends of the soft portion are inserted into the guide member when the open / close body is fully closed or substantially fully closed. Provided, and a second insertion groove into which the end of the hard part in the left-right direction is inserted, and the width dimension of the first insertion groove in the thickness direction of the opening / closing body is set to the width dimension of the second insertion groove. It is preferable to make it smaller.

  According to this, when the opening / closing body reaches the fully closed position or the substantially fully closed position, the left and right end portions of the soft portion are inserted into the first insertion grooves, and the left and right end portions of the hard portion are The dimension in the thickness direction of the opening / closing body with respect to the soft part is smaller than the dimension in the thickness direction of the opening / closing body with respect to the hard part. The width dimension of the insertion groove is smaller than the width dimension of the second insertion groove, so that at least the end portion inserted into the guide member of the hard portion and the soft portion in the thickness direction of the opening / closing body, and these ends Since the width dimension of the groove of the guide member into which the portion is inserted is a size corresponding to each other, it is possible to improve the blocking performance of the air passing through the inside of the guide member. Improve the blocking performance by the open / close body reaching the almost fully closed position. Can.

  Furthermore, in the present invention, as described above, the first insertion groove into which the left and right ends of the soft part are inserted when the opening / closing body is fully closed or substantially fully closed, and the hard part, When the width dimension of the first insertion groove in the thickness direction of the opening / closing body is made smaller than the width dimension of the second insertion groove, the opening / closing body is provided. A guide means for guiding the soft portion to the first insertion groove when the opening / closing body is closingly moved toward the fully closed position is provided at the end portion on the closing side in the left-right direction. Is preferred.

  According to this, even when the width dimension of the first insertion groove in the thickness direction of the opening / closing body is smaller than the width dimension of the second insertion groove, the guidance is performed when the opening / closing body is moving toward the fully closed position. By the means, the soft part can be guided from the second insertion groove to the first insertion groove, and the soft part is more reliably inserted into the first insertion groove in order to make the opening / closing body fully closed or substantially fully closed. Can do.

  The guide means may be of any member, structure, principle, etc., as long as it can guide the soft part to the first insertion groove when the opening / closing body is moving toward the fully closed position. A positioning member such as a roller or a block that can determine the position of the soft portion in the guide member in the thickness direction of the opening / closing body may be used.

  Further, a step portion on which a connecting portion connecting the hard portion and the soft portion is placed is provided between the first insertion groove and the second insertion groove, and the step portion is provided at least in the vertical direction on the soft portion. It is preferable that the opening / closing body is provided at a height position where the opening / closing body is fully closed or substantially fully closed with little or no bending.

  According to this, when the opening / closing body reaches the fully closed position or the substantially fully closed position, the connecting portion is mounted on the stepped portion, and at least the vertical deflection is not generated or hardly generated in the soft portion. When the opening / closing body is fully closed or substantially fully closed, the shape of the soft portion can be made the original predetermined shape, and good blocking performance by the opening / closing body can be ensured.

  In this way, a step portion on which the connecting portion connecting the hard portion and the soft portion is placed is provided between the first insertion groove and the second insertion groove, and the step portion is provided at least on the soft portion. In the case where the opening / closing body is provided at a height position where it is fully closed or substantially fully closed with little or no vertical deflection, it is preferable that the tip of the step portion is a downward inclined surface.

  According to this, when the opening / closing body is closed and moved, and the distal end on the closed side of the soft portion reaches the position of the stepped portion, the distal end on the closed side of the soft portion is moved to the first insertion groove side by the downward inclined surface of the stepped portion It is possible to prevent the tip from being locked by the stepped portion and stopping.

  The connecting part that connects the hard part and the soft part may be a connecting part that structurally connects the hard part and the soft part, and covers the outside of the part that structurally connects the hard part and the soft part. The connection part which connected these hard parts and soft parts in appearance may be sufficient.

  In the above, the soft part of the opening / closing body may be made of any material as long as it is softer than the hard part and has at least vertical flexibility, for example, a sheet. It may be formed by a net, may be formed by a composite of these.

  In addition, the soft portion may be one piece that is continuous in the left-right direction that is the width direction of the opening / closing body, such as one made of one sheet, and a plurality of sheets may or may not overlap each other. A plurality of parts divided in the left-right direction may be used. When the soft part is divided into a plurality of parts divided in the left-right direction and a seat plate is provided at the front end of the soft part on the closing side, the seat plate becomes common to each of the divided soft parts. One piece may be sufficient, the some divided | segmented for each soft part, and the some divided | segmented in common about the some soft part may be sufficient.

  Further, the hard part of the opening / closing body may be formed of any material as long as it has a hardness greater than that of the soft part. When the opening / closing body is a shutter curtain of a shutter device, for example, It may be formed by connecting a plurality of slats, may be formed by connecting a plurality of panels, may be formed by a plurality of pipes connected by links, and at least two of these. It may be formed of two composites.

  Further, the present invention can be applied to any opening / closing device having an opening / closing body whose up-down direction is the opening / closing movement direction. For example, a shutter device in which the opening / closing body is a shutter curtain, or a smoke-proof banner device The present invention can be applied to smoke-proof hanging wall devices, roll screen devices, and the like. The shutter device includes a disaster prevention shutter device for forming a disaster prevention zone with a shutter curtain in the event of a fire, and an opening shutter device for opening and closing openings such as entrances and exits with the shutter curtain. The shutter device for an elevator includes an elevator device.

  Further, when the present invention is applied to a shutter device, the shutter curtain opening / closing movement method of this shutter device is arbitrary. For example, the downward movement of the shutter curtain in the vertical opening / closing movement is the shutter curtain. The opening movement may be performed by an automatic device such as an electric motor. The downward movement may be performed by the weight of the shutter curtain and / or manual operation, and the upward movement may be performed. It may be performed manually, and the upward movement may be performed using the accumulated pressure accumulated in the return spring as the auxiliary force during the downward movement.

  According to the present invention, even when an opening / closing body that is moving in a closed state hits an object, an effect that the load acting on the object can be reduced can be obtained.

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

  FIG. 1 is a front view showing the entire disaster prevention shutter device. In the ceiling back space S2 partitioned from the indoor space S1 by the ceiling member 1, the winding shaft 10 of the disaster prevention shutter device is horizontal or substantially horizontal. The winding shaft 10 is horizontally disposed, and is supported by the left and right brackets 11 coupled to the building frame existing in the ceiling space S2 so as to be rotatable forward and backward. The shutter curtain 12, whose upper end is connected to the winding shaft 10, is suspended from the slit 2 </ b> A of the lintel member 2 provided in the ceiling member 1 into the indoor space S <b> 1 and is in the width direction of the shutter curtain 12. Since both ends in the left-right direction of the curtain 12 are inserted into the guide rail 13 attached to the building housing 4 such as a pillar or wall standing in the indoor space S1, the shutter curtain 12 is slidable up and down. Is moved up and down in the vertical direction while being guided by these left and right guide rails 13 serving as guide members by forward and reverse rotation of the winding shaft 10.

  One of the left and right brackets 11 is provided with an opening / closing machine 14 comprising a combination of an electric motor and a brake, and the drive shaft of the opening / closing machine 14 is wound via a transmission means 15 comprising a sprocket wheel and a chain. The shaft 10 is connected. A seat plate 16 is provided at the closed end of the shutter curtain 12, in other words, at the lower end of the shutter curtain 12. When the seat plate 16 reaches the position of the lintel member 2, the shutter The curtain 12 is fully open.

  Thus, when the shutter curtain 12 is fully open, the brake of the opening / closing machine 14 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 14 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 manual operation device (not shown) is operated by a person, the brake of the opening / closing device 14 is turned off, whereby the shutter curtain 12 is moved from the winding shaft 10 to the winding shaft 10 by its own weight including the weight of the seat plate 16. The shutter curtain 12, which is fed out while being rotated forward and closed and moved downward in this way, reaches the fully closed position by the seat plate 16 landing on the floor 3 of the indoor space S1.

  When the switch device (not shown) is operated, the electric motor of the opening / closing machine 14 is driven, whereby the shutter curtain 12 is wound around the winding shaft 10 that rotates in the reverse direction, and the seat plate 16 is moved upward. When the height position of the lintel member 2 is reached, the electric motor of the switch 14 is stopped and the brake is turned on by the control device to which a signal from a sensor that detects this is input.

  The shutter curtain 12 according to the present embodiment includes a combination of a hard portion 20 that occupies most of the shutter curtain 12 in the vertical direction and a soft portion 30 that is disposed below the hard portion 20, that is, on the closed side. The hard portion 20 is formed by a slat continuous body in which a plurality of steel plate slats 21 are vertically connected. The soft portion 30 is provided over the entire left and right direction of the hard portion 20, and The part 30 is formed by a fire-resistant sheet 31 coated and / or impregnated with a fire-resistant paint. Since the sheet 31 is freely bendable, the soft portion 30 has flexibility in the vertical direction and the horizontal direction.

  2 is a partially enlarged view of FIG. 1, and FIG. 3 is a cross-sectional view taken along line S3-S3 of FIG. FIG. 3 shows a connection structure between the hard portion 20 and the soft portion 30.

  In FIG. 3, a bag portion 31 </ b> A into which a bar 32 is inserted is formed at the upper end of the sheet 31 forming the soft portion 30. Further, of the plurality of slats 21 forming the hard portion 20, a protruding portion 22 protruding in the thickness direction of the shutter curtain 12 is formed at the lower portion of the lowermost slat 21 </ b> A. The lower end of this is a holding portion 22A for holding the bag portion 31A from below. A connecting member 24 overlapped with the slat 21A in the thickness direction of the shutter curtain 12 is connected to the slat 21A by a connecting tool 23 such as a rivet, and the connecting member 24, which is a folded plate material, includes a shutter. A protruding portion 25 is formed in the thickness direction of the curtain 12 and protrudes to the same side as the protruding portion 22, and the bag portion 31 </ b> A and the protruding portion 22 are formed inside the protruding portion 25 having a cross-sectional box shape. And the holding portion 22A are housed. In addition, a horizontal or substantially horizontal closing portion 25C that closes the opening on the upper side of the holding portion 22A is provided at the tip of the rising portion 25B that rises from the lower portion 25A of the protruding portion 25. For this reason, the bag portion 31 </ b> A is prevented from escaping from the holding portion 22 </ b> A by the closing portion 25 </ b> C, whereby the slat connecting body forming the hard portion 20 and the sheet 31 forming the soft portion 30. Are connected vertically, and in this state, the sheet 31 hangs down along the upright portion 25B.

  Since the hard part 20 and the soft part 30 are connected as described above, the protruding part 25 of the connecting member 24 becomes an apparent connection part 26 between the hard part 20 and the soft part 30 in the shutter curtain 12. ing.

  As shown in FIG. 3, the seat plate 16 described above is formed by three plate members 41 to 43 that are stacked in the thickness direction of the shutter curtain 12. The central plate member 42 is thinner than the other plate members 41 and 43 and has a larger vertical dimension, and a bag portion 31B is formed at the lower end of the sheet 31, and this bag portion 31B. A plate member 42 is inserted into the inside. The three plate members 41 to 43 are coupled by a coupling tool 44 such as a bolt and a nut, and a plurality of the coupling tools 44 are provided in the width direction of the shutter curtain 12 (see FIG. 2).

  As shown in FIG. 2, the central plate member 42 has a longer length in the width direction of the shutter curtain 12 than the other plate members 41 and 43, and both end portions of the plate member 42. Is inserted into the left and right guide rails 13 described above, whereby the seat plate 16 composed of the three plate members 41 to 43 is guided by the guide rails 13 and can be moved up and down.

  The shutter curtain 12 is provided with a lifting device 50 for applying a lifting force to the seat 31 and the seat plate 16. As shown in FIG. 2, the pulling device 50 includes an elastic mechanism means 51 attached to the lowermost slat 21A among the plurality of slats 21 forming the hard portion 20, and the elastic mechanism means. The connecting member 52 extends from 51 to the seat plate 16 and causes the elastic force generated by the elastic mechanism means 51 to act upward on the seat plate 16. In the present embodiment, the connecting member 52 is a string-like member made of a wire or a synthetic resin string, and the connecting member 52 is led out from the elastic mechanism means 51 in the width direction of the shutter curtain 12, and then is attached to the slat 21A. The direction is changed downward by a guide roller 53 attached rotatably, and the lower end of the connecting member 52 is connected to a bracket 54 attached to the seat plate 16.

  In the embodiment of FIG. 2, the connecting member 52 extends directly below the guide roller 53, but the connecting member 52 is inclined from the guide roller 53 to the vertical direction to the seat plate 16. It may be extended.

  Further, the soft part 30 may be formed by a plurality of sheets that are stacked and juxtaposed in the left-right direction. When the soft part 30 is formed in this way, the connecting member 52 is connected between the sheets. It may be arranged in the overlapping portion so that the overlapping portion can be substantially reinforced by the connecting member 52.

  4 is a cross-sectional view taken along line S4-S4 in FIG. 3, and FIG. 5 is a cross-sectional view taken along line S5-S5 in FIG. 4 and 5 show the generation principle of the elastic force in the elastic mechanism means 51. FIG. Three rotation shafts 56 to 58 arranged in the width direction of the shutter curtain 12 are rotatably housed inside the case 55 which is the main body of the elastic mechanism means 51. As shown in FIG. 4, a roller 59 connected to the end of the connecting member 52 is coupled to the central rotary shaft 57, and the roller 59 that rotates integrally with the rotary shaft 57 rotates forward and backward. The connecting member 52 is wound and unwound by the roller 59, and the sheet 31 and the seat plate 16 are moved up and down with respect to the hard portion 20 by the winding and unwinding. Then, due to the weight of the seat 31 and the seat plate 16, the right rotational force in FIG. 4 acts on the rotation shaft 57 and the roller 59.

  In FIG. 5, both ends of a leaf spring 70 are connected to the left rotation shaft 56 and the center rotation shaft 57, and the leaf spring 70 is connected to the rotation shaft 56 with respect to the rotation shaft 56. 5 is wound from the end in the left rotation in FIG. 5, and the central rotation shaft 57 is wound in the right rotation in FIG. 5 toward the end connected to the rotation shaft 57. Further, the central rotating shaft 57 and the right rotating shaft 58 are connected to both end portions of a leaf spring 71 which is disposed so as to be displaced in the axial direction of the rotating shafts 56 to 58 with respect to the leaf spring 70. The leaf spring 71 is wound around the central rotating shaft 57 by rotating counterclockwise in FIG. 5 from the end connected to the rotating shaft 57, and the right rotating shaft 58 is connected to the rotating shaft 58. It is wound by clockwise rotation in FIG.

  For this reason, the seat 31 and the seat plate 16 lifted to near the lower end of the hard portion 20 are dropped by their own weights, whereby the central rotary shaft 57 and the roller 59 coupled to the rotary shaft 57 4 is rotated clockwise by the connecting member 52 in FIG. 4, the leaf springs 70 and 71 fed out from the rotary shafts 56 and 58 are wound around the rotary shaft 57. Due to this tightening, the leaf springs 70 and 71 have a return spring force that causes the rotation shaft 57 and the roller 59 to rotate counterclockwise, which is opposite to the rotation direction due to the weight of the seat 31 and the seat plate 16 in FIG. As a result, the elastic mechanism means 51 generates a pulling force for pulling up the seat 31 and the seat plate 16 through the connecting member 52.

  Each of the leaf springs 70 and 71 used as described above is referred to as a conston spring (trade name). In this conston spring, the magnitude of the return spring force is such that the seat 31 and the seat plate 16 against the hard portion 20. Therefore, the elastic mechanism means 51 of this embodiment is of a constant load spring type. In the present embodiment, since each of the two leaf springs 70 and 71 is a Conston spring, the return spring force can be increased.

  Further, as shown in FIG. 1, a plurality of pull-up devices 50 serving as a generating unit of the pulling force that the elastic mechanism means 51 acts on the seat 31 and the seat plate 16 are arranged in the width direction of the shutter curtain 12. Since three are arranged in the figure, even if the weight of the seat 31 and the seat plate 16 is large, the weight of the seat plate 16 formed by the three plate members 41 to 43 made of a metal material is particularly large. However, even if the shutter curtain 12 is for a large span having a large dimension in the width direction of the shutter curtain 12, the pulling force that can be applied to the seat 31 and the seat plate 16 can be increased. It has become.

  In this embodiment, the total pulling force by the three lifting devices 50 is smaller than the total weight of the seat 31 and the seat plate 16. For this reason, the weight of the seat plate 16 always acts on the seat 31, so that the seat 31 maintains the original tensioned state or the substantially tensioned shape.

  6 is a view taken in the direction of arrow S6 in FIG. 1 when the shutter curtain 12 with the seat plate 16 in contact with the floor 3 is fully closed, and FIG. 7 is a sectional view taken along line S7-S7 in FIG. As shown in FIG. 6, the guide rail 13 into which the end in the width direction of the shutter curtain 12, which is the end in the width direction, is inserted, has a groove 60 for inserting this end in the vertical direction. The groove 60 is formed of a lower first insertion groove 60A and an upper second insertion groove 60B. The insertion grooves 60 </ b> A and 60 </ b> B have the thickness of the shutter curtain 12 that is opposite to the protruding side of the connecting portion 26 (the protruding portion 25), which is one side in the thickness direction of the shutter curtain 12. The grooves are coincident in the direction.

  Further, the width dimension W1 of the first insertion groove 60A in the thickness direction of the shutter curtain 12 is smaller than the width dimension W2 of the second insertion groove 60B in the same direction. The dimension T1 in the thickness direction of the shutter curtain 12 at the end of the sheet 31 inserted into the groove 60 is the shutter at the end of the slat 21 that forms the hard portion 20 inserted into the groove 60. It is smaller than the dimension T2 of the curtain 12 in the thickness direction. The width dimension W1 of the first insertion groove 60A is larger than the dimension T1, the thickness dimension of the plate member 42 forming a part of the seat plate 16 inserted into the groove 60, and the plate. The total dimension T3 of the sheet 31 forming the bag portion 31B that wraps the member 42 is larger than the total dimension T3, and the width dimension W2 of the second insertion groove 60B is larger than the dimension T2. The end portion of the connecting portion 26 inserted into the second insertion groove 60B is larger than the dimension T4 of the hard portion 20 including the projecting dimension of the shutter curtain 12 in the thickness direction.

  As described above, forming the first insertion groove 60 </ b> A having the width dimension W <b> 1 on the lower side of the guide rail 13 causes the blocking member 61 shown in FIGS. 1 and 7 to be formed in the guide rail 13. This is performed by connecting to a surface on the same side as the shutter curtain 12 with a connecting tool 62 (see FIG. 7) such as a rivet. As shown in FIG. 6, the upper surface 61A of the closing member 61 forms a partition for partitioning between the first insertion groove 60A and the second insertion groove 60B. A step portion 63 protruding in the thickness direction is formed, and a tip portion of the step portion 63 is a downward inclined surface 63A.

  Further, the height dimension H from the floor 3 to the step portion 63 is the distance from the lower surface of the seat plate 16 to the lower surface of the connecting portion 26 when the seat 31 is in an original tension state or a substantially tension state. It is the same. In other words, the height position from the floor 3 to the stepped portion 63 is a height position at which the shutter curtain 12 is fully closed with no or little vertical deflection of the seat 31. For this reason, when the shutter curtain 12 is closed and moved to a height position at which the connecting portion 26 is placed on the stepped portion 63, the sheet 31 forming the soft portion 30 is not bent in the vertical direction or is hardly bent. The seat plate 16 comes into contact with the floor 3, and thereby the shutter curtain 12 is fully closed. The vertical dimension from the winding shaft 10 of the slat continuous body forming the hard portion 20 is such that the connecting portion 26 is stepped when the shutter curtain 12 that has been closed and moved is fully closed. The dimensions are placed on the part 63.

  For this reason, when the shutter curtain 12 that has been fully opened is closed, the closing movement stops when the seat plate 16 comes into contact with the floor 3 and the shutter curtain 12 is fully closed. The connecting portion 26 is placed on the step portion 63, and the sheet 31 forming the soft portion 30 of the shutter curtain 12 is inserted into the first insertion groove 60A of the grooves 60 of the guide rail 13, The slat continuous body forming the hard portion 20 is inserted into the second insertion groove 60B.

  As shown in FIG. 7, a seal member 65 is accommodated in the guide rail 13, and the main body 65 </ b> A of the seal member 65 is a bent portion 61 </ b> B of the closing member 61 and a bent product of sheet metal. It is held by a holding member 66. Further, the seal member 65 includes a lip portion 65B, and the seal member 65 having such a lip portion 65B has the same vertical dimension as the height H described above, which is also the height dimension of the closing member 61 shown in FIG. It is formed with.

  For this reason, when the connecting portion 26 of the shutter curtain 12 is placed on the step portion 63 and the shutter curtain 12 is fully closed by this, the lip portion 65B of the seal member 65 is one of the seat 31 and the seat plate 16. It contacts the plate member 42 forming the part.

  Further, at both ends in the left-right direction of the shutter curtain 12 and at the end on the closing side, specifically, a plate member 42 forming a part of the seat plate 16 inserted into the guide rail 13. A roller 68 is rotatably attached to the end of the roller 68 by a bracket 67. The roller 68 housed inside the guide rail 13 is slightly smaller than the interval between the two partition portions 13A and 13B of the guide rail 13 forming the second insertion groove 60B described above having the width dimension W2. Has a small diameter. For this reason, the roller 68 prevents the seat plate 16 from moving greatly in the thickness direction of the shutter curtain 12.

  The shutter curtain 12 is in a fully open state in which the seat plate 16 reaches the position of the lintel member 2 at a normal time. When a fire occurs, the shutter curtain 12 starts to close and move to form the disaster prevention zone as described above. When the object 69 is present on the floor 3 shown in FIG. 1 when the shutter curtain 12 performs the closing movement as described above, the seat plate 16 hits the object 69 during the closing movement. Since the shutter curtain 12 is provided with the soft portion 30 by the seat 31 on the closed side with respect to the hard portion 20, the seat 31 is bent and deformed at least upward with respect to the hard portion 20. Since the impact load acting on the object 69 is relaxed, and in the present embodiment, the shutter curtain 12 is provided with the lifting device 50 that applies the lifting force to the seat plate 16 and the seat 31. The total weight of the seat plate 16 and the seat 31 does not act on the object 69 as it is, and a small load obtained by subtracting the lifting force of the lifting device 50 from the total weight acts on the object 69. Since it is only can seat plate 16 is effectively prevented that the object 69 and the seat plate 16 by the impact force when hit the object 69, the sheet 31 may be damaged.

  Also, after the shutter curtain 12 is fully closed, if a person evacuating from the fire lifts the seat plate 16 and the seat 31 of the shutter curtain 12 and tries to pass under the shutter curtain 12, The lifting force of the device 50 becomes an auxiliary force when lifting the seat plate 16 and the seat 31, and therefore the seat plate 16 and the seat 31 can be easily lifted. In addition, after the evacuees pass under the shutter curtain 12, the seat plate 16 and the seat 31 hang down due to their own weight, so that the shutter curtain 12 automatically returns to the fully closed state.

  Furthermore, as described above, the magnitude of the lifting force of the lifting device 50 is the same or substantially the same in the entire or substantially entire vertical movement region of the seat 31 and the seat plate 16 with respect to the hard portion 20. The seat plate 16 and the seat 31 can be easily lifted over the entire vertical movement region or substantially the whole.

  In addition, while the shutter curtain 12 that has reached the fully open position is closed and moved toward the fully closed position, the plate member 42 of the seat plate 16 whose end is inserted into the groove 60 of the guide rail 13 has a width of The roller 68 is attached to the plate member 42 from the second insertion groove 60B having a large dimension W2 to the first insertion groove 60A having a small width dimension W1, and the seat plate 16 is attached to the shutter curtain 12 by the roller 68. Since the roller 68 serves as a guiding means, the plate member 42 of the seat plate 16 is guided from the second insertion groove 60B to the first insertion groove 60A.

  Further, when the plate member 42 of the seat plate 16 shifts from the second insertion groove 60B to the first insertion groove 60A, the step protruding between the insertion grooves 60A and 60B in the thickness direction of the shutter curtain 12 is provided. Although the portion 63 is provided, since the tip of the step portion 63 is a downward inclined surface 63A, the step plate 16 is on one side in the thickness direction of the shutter curtain 12 from the original position. Even if it is shifted to the side of the part 63, the plate member 42 of the seat plate 16 is shifted from the second insertion groove 60B to the first insertion groove 60A by being guided by the descending inclined surface 63A. When 16 touches the floor 3, the shutter curtain 12 reaches the fully closed position as shown in FIG.

  As described above, when the shutter curtain 12 is fully closed, the connecting portion 26 of the shutter curtain 12 is placed on the stepped portion 63, and at this time, the sheet 31 is original. The seat plate 16 is in contact with the floor 3 in a tension state or a substantially tension state. For this reason, this disaster prevention zone has favorable shielding property by the shutter curtain 12 which is fully closed in order to form the disaster prevention zone mentioned above.

  Further, as described above, the dimension T1 in the thickness direction of the shutter curtain 12 with respect to the soft portion 30 formed of the sheet 31 is the thickness direction of the shutter curtain 12 with respect to the hard portion 20 formed of the slat continuous body. The width W1 of the first insertion groove 60A in which the soft part 30 is inserted among the grooves 60 of the guide rail 13 is smaller than the dimension T2 of the second insertion groove 60B in which the hard part 20 is inserted. Therefore, it is possible to improve the air blocking performance through the inside of the guide rail 13, specifically, the air blocking performance when a fire occurs.

  Further, when the shutter curtain 12 is fully closed, the lip portion 65B of the seal member 65 is in contact with the seat 31 and the plate member 42 forming a part of the seat plate 16, so this seal The member 65 can also improve the barrier property for smoke passing through the guide rail 13. And since the sheet | seat 31 at this time is a tension | tensile_strength state or a substantially tension | tensile_strength state as mentioned above, the sealing performance of the sealing member 65 by the lip | rip part 65B contacting the sheet | seat 31 becomes a high thing.

  In the present embodiment, as shown in FIG. 7, the shutter shutter curtain 12 tends to be greatly curved and deformed in the thickness direction of the shutter curtain 12 due to, for example, a fire pressure. In some cases, an abutting member 66A is provided for preventing the curved deformation when the seat plate 16 of the shutter curtain 12 abuts.

  INDUSTRIAL APPLICABILITY The present invention can be used for various shutter devices including a disaster prevention shutter device for forming a disaster prevention section with a shutter curtain, and an opening / closing device such as a smoke proof banner device.

It is a front view showing the whole shutter device for disaster prevention used as an opening-and-closing device concerning one embodiment of the present invention. FIG. 2 is a partially enlarged view of FIG. 1. It is the S3-S3 sectional view taken on the line of FIG. FIG. 4 is a sectional view taken along line S4-S4 of FIG. FIG. 5 is a cross-sectional view taken along line S5-S5 of FIG. FIG. 6 is a view taken in the direction of an arrow S6 in FIG. It is the S7-S7 sectional view taken on the line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Winding axis | shaft 12 Shutter curtain which is an opening / closing body 13 Guide rail which is a guide member 16 Seat plate 20 Hard part 21 Slat 26 Connection part 30 Soft part 31 Sheet 50 Lifting device 51 Elastic mechanism means 52 Connection member 60 Guide rail groove 60A 1st insertion groove 60B 2nd insertion groove 63 Step part 63A Downward inclined surface 65 Seal member 68 Roller as guide means W1 Width dimension of first insertion groove W2 Width dimension of second insertion groove

Claims (11)

It can be opened and closed in the vertical direction, the downward direction is the closing movement direction, and the hard part and at least a part of the hard part are arranged on the closing side, and at least the flexibility in the vertical direction In an opening and closing device having an opening and closing body configured to include a soft part having
A lifting device for applying a pulling force smaller than the weight of the soft portion to the soft portion ;
The dimension in the thickness direction of the opening / closing body for the soft part is smaller than the dimension in the thickness direction of the opening / closing body for the hard part,
The opening / closing body is guided by a guide member inserted in the left and right ends of the opening / closing body to be freely opened and closed, and the guide member has the opening / closing body fully closed or substantially fully closed. A first insertion groove into which the left and right ends of the soft part are inserted, and a second insertion groove into which the left and right ends of the hard part are inserted. The width dimension of the first insertion groove in the thickness direction is smaller than the width dimension of the second insertion groove,
The first insertion groove and the second insertion groove are grooves in which edges on one side in the thickness direction of the opening / closing body are aligned with each other in the thickness direction of the opening / closing body,
In order to guide the soft part to the first insertion groove when the opening / closing body is closing and moving toward the fully closed position at an end of the opening / closing body in the lateral direction and on the closing side Is provided,
The distance between the guiding means and the edge on the other side in the thickness direction of the opening / closing body in the second insertion groove is the thickness direction of the opening / closing body in the soft portion and the first insertion groove. An opening / closing device characterized in that the opening / closing device is smaller than the distance between the edge of the other side . 2. The switchgear according to claim 1, wherein the guide means is a roller having an axial direction in the left-right direction. 3. The opening / closing apparatus according to claim 1 , wherein a seat plate is provided at a closed end of the soft portion, and the lifting force of the lifting device is greater than the weight of the soft portion including the weight of the seat plate. Opening and closing device characterized by being small. The opening / closing apparatus according to claim 3 , wherein the lifting device is disposed on one of the hard portion and the seat plate, and elastic mechanism means for generating an elastic force, and extends from the elastic mechanism means to the other, An opening and closing device comprising a connecting member that causes the elastic force to act upward on the seat plate. 5. The switchgear according to claim 4, wherein the elastic mechanism means is disposed in the hard portion, and the connecting member extends from the elastic mechanism means to the seat plate. 6. The opening / closing device according to claim 4 or 5, wherein the elastic mechanism means is coupled to the first rotation shaft and rotates integrally with the first rotation shaft, and the end portion of the connecting member. Are connected to both ends of the roller, the second rotating shaft, the first rotating shaft, and the second rotating shaft, and the first rotation of the connecting member. A leaf spring that accumulates a return spring force that is wound around the shaft and the second rotating shaft in opposite directions and rotates the roller coupled to the first rotating shaft in the winding direction of the connecting member. A switchgear characterized by comprising. The switchgear according to any one of claims 1 to 6 , wherein a plurality of the pull-up devices are provided in a left-right direction that is a width direction of the switchgear. 8. The opening / closing apparatus according to claim 1 , wherein a seal member that contacts the soft portion when the opening / closing body is fully closed or substantially fully closed is disposed inside the guide member. Opening and closing device characterized by that. The switchgear according to any one of claims 1 to 8 , wherein a step portion on which a connecting portion between the hard portion and the soft portion is placed is provided between the first insertion groove and the second insertion groove. The step portion is provided at a height position at which the opening / closing body is fully closed or substantially fully closed without causing at least vertical deflection at the soft portion. apparatus.   The switchgear according to claim 9, wherein a tip portion of the step portion is a downward inclined surface. The switchgear according to any one of claims 1 to 10, wherein the soft part is formed of a sheet.