JP5243747B2 - Switchgear - Google Patents

Description

  The present invention relates to an opening / closing device provided with an opening / closing body that closes and moves downward, and can be used, for example, for various shutter devices including a disaster prevention shutter device, a smoke-proof banner device, an awning device, and the like.

  In an opening / closing device provided with an opening / closing body that is closed and moved downward, if the weight of the lower end of the opening / closing body is reduced to improve safety, the closing movement of the opening / closing body may not be started. Some opening / closing devices utilize the weight of the weight member to start the closing movement of the opening / closing body. The opening / closing device shown in Patent Document 1 below is received by an opening / closing body that is closed and moved downward by its own weight and a receiving portion provided on the opening / closing body, and this closing movement is performed by weight when the opening / closing of the opening / closing body starts. And a weight member for assisting the start.

This open / close device is specifically a shutter device for disaster prevention, and the upper surface of the seat plate of the shutter curtain serving as the open / close body receives a weight member formed in a vertically long box shape when the shutter curtain is fully opened. When the shutter curtain is assisted by the weight of the weight member and starts the closing movement, the upper end of the weight member becomes a lintel member through which the shutter curtain is inserted vertically. When the weight member is locked, the lowering of the weight member is stopped. Thereafter, the shutter curtain is lowered to the fully closed position by its own weight. In the middle of raising the shutter curtain to the fully open position, the weight member is received by the upper surface of the seat plate, and when the shutter curtain reaches the fully open position, the weight member returns to the initial height position.
Japanese Patent No. 3622106 (paragraph number 0018, FIG. 4)

  According to the above opening / closing device, the closing movement start assisting means for assisting the start of the closing movement of the shutter curtain is formed by the vertically long weight member. Therefore, the closing movement start assisting means has a large height. This is not preferable.

  An object of the present invention is to provide an opening / closing device that can reduce the size of closing movement start assisting means for assisting the start of closing movement of the opening / closing body.

  An opening / closing device according to the present invention is received by at least an opening / closing body that closes and moves downward, and a receiving member provided on the opening / closing body, and a weight member that assists the start of the closing movement by weight when the opening / closing body starts to move. The weight member includes a deformable connecting means that is deformable when the opening / closing body is opened / closed to the stationary member that is stationary relative to the opening / closing body. Are connected to each other.

  In this opening / closing device, since the weight member is received by the receiving portion provided in the opening / closing body, the start of closing movement of the opening / closing body is assisted by the weight of the weight member, and thereafter, the weight member is deformed by the deformable connecting means. As a result, the weight member descends at the deformation limit position of the deformable connecting means, and the weight members thereafter are suspended by the deformable connecting means, and are opened and closed. The body moves to a predetermined position by its own weight. When the opening / closing body opens and moves upward, the weight member is received by the receiving portion in the middle of the opening movement, and the opening / closing body opens and moves as it is, so that the weight member is separated from the opening / closing body by the deformation of the deformable connecting means. When the opening / closing body reaches the fully open position, the weight member also returns to the initial position at the predetermined height position.

  According to this opening / closing device, the vertical movement within the predetermined height range of the weight member that is performed together with the opening / closing movement of the opening / closing body in the vertical direction is performed by the deformation of the deformable connecting means. Since the dimension in the vertical direction and the like is reduced by deformation, the closing movement start assisting means for assisting the closing movement of the opening / closing body, which is constituted by the weight member and the deformable connecting means, can be miniaturized.

  In the present invention, the deformable connecting means may be arbitrary as long as it can be deformed when the opening and closing body is opened and closed, and an example thereof is a string-like member. The string-like member may be, for example, a chain including a roller chain, a wire, a synthetic resin string having sufficient strength, a rubber string, or the like.

  Since the deformable connecting means may be deformed following the vertical movement of the weight member, the deformation direction is the vertical direction and the horizontal direction that is the width direction of the opening and closing body, and the thickness of the opening and closing body. It is preferable that it is not deformable or difficult to deform in the vertical direction. If the deformable connecting means is a chain including a roller chain, and the direction of the pin that connects the links of the roller chain is the thickness direction of the opening / closing body, this chain can be deformed in the vertical direction and the left / right direction. Since it cannot be deformed or is difficult to deform in the thickness direction of the body, it can be effectively used as a deformable connecting means.

  Further, the deformable connecting means may be a link mechanism, and this link mechanism may have one or a plurality of links connecting the stationary member and the weight member.

  Further, the weight member is preferably provided with a storage member for storing the deformable connecting means when the opening / closing body reaches the fully open position.

  If such a storage means is provided in the weight member, even if the deformable connecting means when the opening / closing body reaches the fully open position is in a contracted and deformed state such as loosening, the deformable connecting means Since it is stored in the storage member, it can be prevented that the deformable connecting means hangs down below the weight member.

  Further, the immovable member that is immovable with respect to the opening / closing body and to which the deformable connecting means is connected may be an arbitrary member, and an example thereof is a lintel in which a slit through which the opening / closing body is vertically inserted is formed. It is a member.

  Further, the vertical movement of the weight member performed by the deformation of the deformable connecting means may be guided by the weight member guide member. As described above, when the weight member guide member that guides the vertical movement of the weight member is provided in the opening / closing device according to the present invention, the vertical movement of the weight member is prevented smoothly from fluctuations such as vibration. Can be done.

  When such a weight member guide member is provided in the opening / closing apparatus according to the present invention, the stationary member to which the deformable connecting means is connected may be used as the weight member guide member.

  Furthermore, the shape of the weight member is arbitrary, and one example is that the weight member is an elongated member that is elongated in the left-right direction, which is the width direction of the opening / closing body. When the weight member is an elongated member that is elongated in the left-right direction, the receiving portion provided to receive the weight member in the opening / closing body is, for example, a plurality of receiving members arranged in parallel in the left-right direction on the opening / closing body. Can be formed.

  The opening / closing movement system of the opening / closing body in the opening / closing apparatus according to the present invention is arbitrary. That is, in order to cause the opening / closing movement of the opening / closing body to be related to the rotation of the winding shaft, the upper end of the opening / closing body is coupled to a rotatable winding shaft, and the opening / closing movement of the opening / closing body is The opening / closing movement of the opening / closing body may be performed while maintaining a predetermined shape such as a flat shape or slightly curving like an overhead door. It may be.

  Further, the configuration of the opening / closing body itself is also arbitrary, and the opening / closing body may be formed, for example, by a sheet at least on the lower side which is the closing side, and this includes the whole or substantially the entire opening / closing body. The case where it is formed of a sheet is included. Moreover, when the lower part which becomes a closing side shall be formed with a sheet | seat, the upper part can be formed with hard members, such as a slat and a panel, for example. Moreover, you may form the whole opening / closing body or the substantially whole with hard members, such as a slat and a panel.

  Further, when at least a part of the opening / closing body is formed of a sheet, the sheet portion may be formed of a single sheet, or may be formed of a plurality of sheets sewn together or separated from each other. Good.

  Furthermore, in order to suppress the bending of the opening / closing body in the thickness direction of the sheet forming the sheet portion, a bending suppressing member formed of a hard material such as metal may be disposed on the sheet portion.

  In addition, the present invention can be applied to any opening / closing device having an opening / closing body that is closed and moved downward at least. The opening / closing device includes a shutter device, a smoke-proof banner device, and an awning device. The shutter device includes a disaster prevention shutter device for forming a disaster prevention zone with a shutter curtain (opening / closing body) that has reached a fully closed position, and this shutter device for disaster prevention is also intended for a normal indoor space. Well, it may be for elevators, escalators, staircases and the like. The shutter device may be an opening shutter device that opens and closes an opening such as an entrance / exit with a shutter curtain, or may be a window shutter device or the like.

  Further, the driving force for closing and moving the opening / closing body may be the weight of the opening / closing body itself or the driving force from a driving source such as an electric motor, or the pressure of water ejected from a fire engine or the like in the event of a fire. However, it may be human power.

  In addition, when the present invention is applied to a shutter device, the obstacle is detected when the obstacle comes into contact with the lower end portion of the shutter curtain when the shutter device is closed and moved downward. An obstacle detection device for stopping the closing movement of the shutter curtain may or may not be provided.

  Furthermore, a seat plate may or may not be provided on the shutter curtain of this shutter device.

  Furthermore, when the present invention is applied to a shutter device, the upward movement of the shutter curtain, which is an opening / closing body, may be performed by automatic driving means such as an electric motor, and is ejected from a fire engine or the like when a fire occurs. In the case of a shutter device of the type in which the return spring force is accumulated in the return spring when the shutter curtain is closed and moved downwards. The accumulated return spring force may serve as an auxiliary force to move the shutter curtain upward.

  In the above description of the present invention, the above-described deformable connecting means is used for the receiving portion formed by a plurality of receiving members arranged in the left-right direction on the opening / closing body in order to receive the weight member. It can be applied to any switchgear that is not. When the receiving part is provided in the opening / closing body of such an opening / closing device, the opening / closing body reaches from the fully open position to the fully closed position while the weight member is received by the receiving part. The weight member may be received by the receiving portion when the opening / closing body is opened and moved from the fully closed position to the fully opened position, or an operator or the like may receive from the receiving portion of the opening / closing body that has reached the fully closed position. The weight member is removed, so that the opening / closing body opens and moves from the fully closed position to the fully opened position without receiving the weight member at the receiving portion, and this weight member is moved to the receiving portion of the opening / closing body that has reached the fully opened position. You may make it perform the work which receives.

  According to the present invention, it is possible to obtain an effect that the closing movement start auxiliary means for assisting the opening movement start of the opening / closing body can be reduced in size.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated based on drawing. The switchgear according to this embodiment has a shutter curtain in the space of a structure such as a building or an underground mall when the shutter curtain that is closed and moved by its own weight reaches the fully closed position. It is a shutter device for disaster prevention for forming a disaster prevention zone with a curtain.

  FIG. 1 is a front view showing the entirety of the shutter device for disaster prevention, and shows a fully closed shutter curtain. 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 disposed horizontally or substantially horizontally. The winding shaft 10 is arranged in the ceiling back space S2. 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 coupled to the winding shaft 10 is suspended in the indoor space S1 from the slit of the lintel member 3 provided on the ceiling member 1 and is in the width direction of the shutter curtain 12. Since both end portions in the left-right direction of 12 are inserted into a guide rail 5 attached to a building housing 4 such as a pillar or wall standing in the indoor space S1, the shutter curtain 12 is slidable up and down. By the forward / reverse rotation of the take-up shaft 10, it is opened and closed in the vertical direction while being guided by the left and right guide rails 5 serving as shutter curtain 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. As shown in FIG. 2, when the front end portion of the shutter curtain 12 on the closed side, in other words, the lower end portion of the shutter curtain 12 reaches the position of the lintel member 3, the shutter curtain 12. Is fully open.

  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 opening / closing machine 13 is turned off, whereby the shutter curtain 12 is moved from the winding shaft 10 to the winding shaft by its own weight and the weight of a weight member described later. The closing movement is started while 10 is rotated forward. Thus, the shutter curtain 12 closed and moved downward reaches the fully closed position as shown in FIG. 1 by the lower end of the shutter curtain 12 landing on the floor 6 of the indoor space S1.

  When a switch device (not shown) is operated, the electric motor of the opening / closing machine 13 is driven, and the shutter curtain 12 is wound up and moved upward by the winding shaft 10 rotating in reverse, as shown in FIG. As shown, when the lower end of the shutter curtain 12 reaches the height position of the lintel member 3, the electric motor of the switch 13 is stopped by the control device that receives a signal from the sensor that detects this. At the same time, the brake is turned on.

  As shown in FIG. 1, 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, it consists of a combination with the sheet portion 30 provided in the lower part which is the closed side of the shutter curtain 12. 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 vertically connected, and the sheet portion 30 is formed by a sheet 31. The sheet 31 is formed of a fire-resistant silica cloth or glass cloth that is coated and / or impregnated with a fire-resistant paint, and is loosely deformable in the vertical direction.

  The hard portion 20 and the sheet portion 30 are connected by a connecting member 22.

  FIG. 3 excludes the shutter curtain 12 and the like, the lintel member 3, the left and right shutter curtain guide rails 5, a weight member 40 that assists the start of the closing movement of the shutter curtain 12 by weight, and the weight member 40. It is a front view which shows only a related member. The weight member 40 is an elongated member that is elongated in the left-right direction, which is the width direction of the shutter curtain 12, and the weight member 40 is a stationary member with respect to the shutter curtain 12 that opens and closes in the vertical direction. It is connected to the lintel member 3 by a roller chain 41, and two roller chains 41 are provided in the left-right direction in this embodiment. Also, each roller chain 41 can be deformed such as slack and tension when the shutter curtain 12 is opened and closed as will be described later. 41 is also a string-like member.

  4 is a cross-sectional view taken along line S4-S4 of FIG. 3. FIG. 4 shows a connection structure between the weight member 40 and the lintel member 3 by the roller chain 41. As shown in FIG. On the upper surface of the weight member 40, a groove-type member 42 with an opening facing upward is attached, and each roller chain 41 has a length in the left-right direction over the entire length of the weight member 40. The lower end of each roller chain 41 is connected to the lintel member 3 by a pin 44 at the portion of the slit 3A through which the shutter curtain 12 of the lintel member 3 is inserted vertically.

  The width dimension (the dimension in the thickness direction of the shutter curtain 12) of the groove portion 42A of the groove-shaped member 42 is larger than the thickness dimension (the dimension in the thickness direction of the shutter curtain 12) of the roller chain 41. As will be described later, the roller chain 41 can be accommodated in the groove portion 42A. Therefore, the groove-shaped member 42 is also an accommodating member for accommodating the roller chain 41.

  FIG. 5 is a cross-sectional view taken along line S5-S5 of FIG. 1 showing the structure of the sheet portion 30 of the shutter curtain 12. The sheet 31 forming the sheet portion 30 is folded back at the lower end portion of the sheet portion 30. A bag portion 45 that is elongated in the left-right direction is formed by sewing, and a seat plate member 46 of the shutter curtain 12 is accommodated in the bag portion 45, and this seat plate member 46 is formed in this embodiment. It is due to a flat bar.

  Further, as shown in FIG. 1, the seat portion 30 of the shutter curtain 12 is provided with a receiving portion 50 for receiving the weight member 40. The receiving portion 50 is formed by a plurality of receiving members 51 arranged side by side in the left-right direction, and this receiving member 51 is shown in FIG. 6, which is a sectional view taken along line S6-S6 of FIG. The receiving member 51 includes a first extending portion 51A that extends downward along the seat portion 30 and a second extending portion 51B that extends outward in the thickness direction of the shutter curtain 12 from the lower end of the first extending portion 51A. The first extending portion 51 </ b> A has a plate-like reinforcing member 52 applied to a surface opposite to the receiving member 51 on the opposite side of the seat portion 30, and a stop penetrating the seat portion 30. It is fixed to the seat portion 30 by a wearing tool 53.

  As can be seen from FIG. 1, a plurality of receiving members 51 and reinforcing members 52 are arranged in the left-right direction, and the bag portion 45 is crushed at the place where these are arranged. As described above, the bag portion 45 is formed by a plurality of short bag portions 45A divided at the places where the receiving member 51 and the reinforcing member 52 are arranged, and the seat plate member 46 is also serially connected in the left-right direction. Are formed by short seat plate members 46A housed for each of these short bag portions 45A. In addition, since both left and right end portions of the sheet portion 30 that are both widthwise end portions of the shutter curtain 12 are closed by sewing or the like, among the plurality of short bag portions 45A, the short bag portions 45A on both the left and right sides. Each end of is also blocked.

  As shown in FIG. 2, when the shutter curtain 12 reaches the fully open position, the weight member 40 is placed on the second extending portion 51B of the receiving member 51, and the slit of the lintel member 3 shown in FIG. It is in a state of being housed inside 3A. At this time, the roller chain 41 is loosely deformed and is accommodated in the groove portion 42 </ b> A of the groove-shaped member 42 provided on the upper surface of the weight member 40.

  As described above, when the brake of the switch 13 is turned off due to the occurrence of a fire or the like, the shutter curtain 12 tries to start the closing movement while rotating the winding shaft 10 by its own weight including the weight of the seat plate member 46. However, the start of the closing movement is assisted by the weight of the weight member 40 received by the receiving member 51. Therefore, when the shutter curtain 12 is fully opened, the hard portion 20 occupying a large weight ratio of the shutter curtain 12 is wound around the winding shaft 10, and the light weight sheet portion 30 is suspended from the winding shaft 10. Even so, the shutter curtain starts closing movement at a high speed with the assistance of the weight of the weight member 40. Thereby, the time until the shutter curtain 12 reaches the fully closed position is shortened, and a disaster prevention zone by the shutter curtain 12 can be formed in a short time when a fire occurs.

  Note that, as described above, the shutter curtain 12 is formed by the lower sheet portion 30 that is a lightweight portion and the upper hard portion 20 that is a weight portion, and the like. The entire center of gravity of the shutter curtain 12 when the shutter curtain 12 has reached the fully open position is the shutter with respect to the center of rotation of the winding shaft 10. Even if the curtain 12 is at the position opposite to the side where the curtain 12 should be closed and moved by its own weight, the shutter curtain 12 can be closed and moved according to the weight of the weight member 40.

  Further, as described above, the shutter curtain 12 starts closing movement, and when the closing movement reaches a predetermined distance, that is, reaches a distance where the roller chain 41 connecting the lintel member 3 and the weight member 40 is tensioned. Then, the weight member 40 that has been placed on the second extending portion 51A of the receiving member 51 and has been lowered integrally with the shutter curtain 12 is separated from the receiving member 51 by the tension of the roller chain 41, In other words, the weight member 40 is suspended from the lintel member 3 by the roller chain 41, and only the shutter curtain 12 is lowered to the fully closed position by the weight of the shutter curtain 12 itself.

  As described above, when the shutter curtain 12 is opened upward by the rotation of the winding shaft 10 driven by the electric motor of the opening / closing machine 13, the weight member 40 is moved to open the shutter curtain 12 during the opening movement. 7, the weight member 40 is integrally received with the shutter curtain 12 while being received by the receiving member 51, as shown in FIG. 7. When the shutter curtain 12 rises and reaches the fully open position, the weight member 40 returns to the initial position before the shutter curtain 12 starts the closing movement.

  At this time, since the roller chain 41 is slack and is stored in the groove portion 42A of the groove-shaped member 42, it is possible to prevent the slack roller chain 41 from hanging down from the weight member 40.

  In the roller chain 41, the direction of the pins connecting the links is used as the thickness direction of the shutter curtain 12. For this reason, the roller chain 41 can be deformed in the up-down direction and the left-right direction, which is the width direction of the shutter curtain 12, and cannot or cannot be deformed in the thickness direction of the shutter curtain 12. Therefore, the roller chain 41 is suitable for use as a deformable connecting means for connecting the weight member 40 whose moving direction is the vertical direction to the lintel member 3 that is a stationary member. ing. Further, since the roller chain 41 is not deformable or difficult to deform in the thickness direction of the shutter curtain 12, when the shutter curtain 12 returns from the fully closed position to the fully opened position, the roller chain 41 is moved to the groove-shaped member 42. It can be more reliably stored in the groove 42A.

  Further, during the closing movement of the shutter curtain 12, the obstacle 55 shown in FIG. 8 exists below the shutter curtain 12, and the lower end of the seat portion 30 hits the obstacle 55 on the floor 6. In this case, the seat plate member 46 disposed in the seat portion 30 is formed by a plurality of short seat plate members 46A disposed in a divided state in the left-right direction. Thus, the lower end portion of the seat portion 30 can be deformed relatively flexibly, whereby the gap 56 formed between the lower end portion of the seat portion 30 and the floor 6 can be reduced, and a large load is applied to the obstacle 55. The load acting on the obstacle 55 can be dispersed without acting.

  As shown in FIGS. 6 and 7, the receiving member 51 has a J-shape or a substantially J-shape having a third extending portion 51C rising from the tip of the second extending portion 51B. Accordingly, it is possible to effectively prevent the weight member 40 from falling off from the second extending portion 51B by the third extending portion 51C.

  Further, the shutter device for disaster prevention according to the present embodiment can be equipped with an obstacle detection device, and in this case, the above-described switch 13 according to an obstacle detection signal from the obstacle detection device. The brake may be turned on, or the brake may be turned on manually. By turning on the brake in this way, the closing movement of the shutter curtain 12 can be stopped whether the weight of the weight member 40 is acting on the shutter curtain 12 or not.

  According to the present embodiment described above, the weight member 40 for assisting the start of the closing movement due to the weight of the shutter curtain 12 with the weight is attached to the lintel member 3 which is a stationary member with respect to the shutter curtain 12 with the roller chain 41. The roller chain 41 is a deformable connecting means that can be deformed such as loosening when the shutter curtain 12 is opened and closed, and a weight member 40 that is moved together with the opening and closing movement of the shutter curtain 12 in the vertical direction. Since the vertical movement within the predetermined height range is performed by the deformation of the roller chain 41, the closing movement start assisting means constituted by the weight member 40 and the roller chain 41 is provided with the vertical dimension of the shutter curtain 12. Miniaturized by roller chain 41 that changes with opening and closing movement Rukoto can.

  FIG. 9 shows another embodiment of the deformable connecting means for connecting the weight member 40 to the lintel member 3. The deformable connecting means in this embodiment is a link mechanism 61, and two link mechanisms 61 are provided in the left-right direction. Each link mechanism 61 includes a first link member 63 whose upper end is rotatably attached to the lintel member 3 by a pin 62, and a first link member 63 rotatably connected by a pin 64 to the lower end of the first link member 63. The second link member 65 is rotatably connected to a pin 67 to a bracket 66 provided on the weight member 40.

  When the shutter curtain 12 reaches the fully open position and the weight member 40 is received by the receiving portion 50, the two link members 63 and 65 are folded, and the link members 63 and 65 and the weight member 40 The member 3 is housed in the above-described slit 3A.

  When the shutter curtain 12 is assisted by the weight of the weight member 40 and starts to move downward, the angle formed by the two link members 63 and 65 gradually increases, and in other words, when this angle becomes a predetermined size. When the descending distance of the shutter curtain 12 and the weight member 40 reaches a predetermined distance, the stove portion 68 provided on one of the two link members 63 and 65 comes into contact with the other link member. As a result, the deformation of the link mechanism 61 in which the angle formed by the two link members 63 and 65 increases is stopped, the weight member 40 does not descend any more, and only the shutter curtain 12 descends.

  When the shutter curtain 12 is opened and moved from the fully closed position, the weight member 40 is received by the receiving portion 50 that has been lifted by the opening movement of the shutter curtain 12 in the middle of the opening movement as in the above-described embodiment. As the shutter curtain 12 opens and moves, the link mechanism 61 undergoes a deformation in which the angle formed by the two link members 63 and 65 gradually decreases. When the shutter curtain 12 reaches the fully closed position, the link mechanism 61 Has returned to the folded shape before the start of the closing movement of the shutter curtain 12.

  In this embodiment, when the weight member 40 is received by the receiving portion 50 during the opening movement of the shutter curtain 12, the two link members 63 and 65 are not aligned in a straight line. , 65 is provided with a predetermined bending angle shown in FIG. Thus, by making the shape of the link mechanism 61 when the weight member 40 is received by the receiving portion 50 in the middle of the opening movement of the shutter curtain 12 into a dogleg shape, the shutter curtain 12 is opened and moved thereafter. By continuing, the link mechanism 61 can be more reliably returned to the folded shape before the shutter curtain 12 starts the closing movement.

  FIG. 10 shows an embodiment in which a weight member guide member for guiding the vertical movement of the weight member is provided. The weight member 70 of this embodiment has a length in the left-right direction that reaches the weight member guide rail 73 that is a weight member guide member integrated with the shutter curtain guide rail 5, in other words, the weight. The member 70 is an elongated member whose length in the left-right direction is longer than that of the weight member 40 of the above-described embodiment. The member 70 is attached to both ends of the weight member 70 and the upper surface of the weight member 70, and the weight member Both end portions of the groove member 72 having a length in the left-right direction over the entire length are inserted into the left and right two weight member guide rails 73 slidably up and down. Further, the upper and lower ends of the roller chain 71 which is a deformable connecting means are connected to the upper end of the weight member guide rail 73 and the groove member 72, whereby the weight member 70 is the same as the lintel member 3. A weight member guide rail 73 which is a stationary member with respect to the shutter curtain 12 is connected by two right and left roller chains 71.

  In this embodiment, the vertical movement of the weight member 70 within the predetermined height range due to the rising and lowering of the receiving portion 50 is performed while being guided by the weight member guide rail 73. It is possible to prevent the weight member 70 from fluctuating in the thickness direction of the shutter curtain 12 and the like. Further, when the shutter curtain 12 reaches the fully open position, the slackened roller chain 71 can be stored in the groove portion of the groove member 72 as in the above embodiment.

  The fixed member that connects the upper ends of the roller chains 71 may be the lintel member 3. Further, the deformable means for connecting the immovable member and the weight member 70 may be the link mechanism 61 shown in FIG.

  Alternatively, the weight member guide rail 73 and the shutter curtain guide rail 5 may be separate members, and the weight member guide rail 73 may be coupled to the shutter curtain guide rail 5 and / or the lintel member 3. The member guide rail 73 may be formed as a part of the shutter curtain guide rail 5.

  FIG.11 and FIG.12 shows another embodiment about the receiving member of the receiving part 50 provided in the sheet | seat part 30 of the shutter curtain 12 in order to receive a weight member. In this embodiment, a plate-like base member 82 is fastened to the seat portion 30 together with a reinforcing member 52 by a fastening tool 53, and a receiving member 81 is attached to the base member 82 by a hinge 83. The receiving member 81 includes a first extending portion 81A extending downward, a second extending portion 81B extending outward from the lower end of the first extending portion 81A in the thickness direction of the shutter curtain 12, and the second extending portion. The third extending part 81C rising from the tip of the part 81B has a J shape or a substantially J shape, and the upper end of the first extending part 81A is coupled to the boss part 82A of the base member 82 by the hinge 83. Has been.

  By arranging a plurality of receiving members 81 in the width direction of the shutter curtain 12, the receiving portion 50 in this embodiment is formed.

  As shown in FIG. 11, the receiving member 81 when not receiving the weight member 40 is formed by forming the hinge 83 with a material having a spring action such as a leaf spring, or the base member 82 and the receiving member 81. By interposing an elastic member such as a spring between the two, a tilting posture is obtained in which the shutter curtain 12 is rotated outward in the thickness direction about the hinge 83. When the receiving member 81 is in the inclined posture, the shutter curtain 12 is moved upward from the fully closed position so that the weight member 40 is moved to the second extension of the receiving member 81 as shown in FIG. The receiving member 81 is placed on the protruding portion 81 </ b> B and is rotated about the hinge 83 by the weight of the weight member 40 to be in a vertical posture. Thereafter, the weight member 40 rises together with the shutter curtain 12.

  According to this embodiment, the posture of the receiving member 81 when receiving the weight member 40 by raising the shutter curtain 12 from the fully closed position is an inclined posture rotated about the hinge 83 outward in the thickness direction of the shutter curtain 12. Therefore, even if the position of the weight member 40 at this time is shifted outward in the thickness direction of the shutter curtain 12, the weight member 40 can be received by the receiving member 81 more reliably.

  This embodiment is particularly effective when the weight member is a weight member 40 that is not guided by the weight member guide rails in the vertical movement, unlike the weight member 70 of FIG. However, this embodiment can also be applied when the weight member is the weight member 70 of FIG. Further, the deformable connecting means for connecting the weight member to the immovable member may be the roller chains 41 and 71, or the link mechanism 61 of FIG.

  FIGS. 13 and 14 show still another embodiment of the receiving member of the receiving portion 50. In this embodiment, a plate-like base member 92 is fixed to the seat portion 30 together with the reinforcing member 52 by a fixing tool 53. The base member 92 includes a first extending portion 92A extending downward and the first extending portion. A second extending portion 92B extending from the lower end of the protruding portion 92A to the outside in the thickness direction of the shutter curtain 12, and a third extension rising obliquely from the tip end of the second extending portion 92B to the outside in the thickness direction of the shutter curtain 12 It consists of an exit 92C. A hinge 93 is coupled to the base member 92 across the second extending portion 92B and the third extending portion 92C, and the receiving member 91 is attached to the hinge 93.

  The receiving member 91 includes a first extending portion 91A extending downward, and a second extending portion 91B extending from the lower end of the first extending portion 91A to the opposite side of the second extending portion 92B of the base member 92. The hinge 93 is coupled to the lower portion of the first extending portion 91A. A plurality of the receiving members 91 are arranged side by side in the width direction of the shutter curtain 12, whereby the receiving portion 50 in this embodiment is formed.

  As shown in FIG. 13, the receiving member 91 when not receiving the weight member 40 is formed by forming the hinge 93 with a material having a spring action such as a leaf spring, or the base member 92 and the receiving member 91. By interposing an elastic member such as a spring between the two, a tilting posture is obtained in which the shutter curtain 12 is rotated outward in the thickness direction about the hinge 93. When the receiving member 91 is in this inclined posture in which the first extending portion 91A of the receiving member 91 and the third extending portion 92C of the base member 92 are parallel, the shutter curtain 12 is in the fully closed position. As shown in FIG. 14, the weight member 40 is placed on the second extending portion 91 </ b> B of the receiving member 91 that has been lifted by the opening movement of the shutter curtain 12. Due to the weight of the member 40, the receiving member 91 rotates around the hinge 93 until the second extending portion 91 </ b> B of the receiving member 91 hits a stop portion 92 </ b> D provided on the upper surface of the second extending portion 92 </ b> B of the base member 92. By moving, the receiving member 91 assumes a vertical posture, and thereafter, the weight member 40 rises together with the shutter curtain 12.

  Also in this embodiment, the posture of the receiving member 91 when receiving the weight member 40 by raising the shutter curtain 12 from the fully closed position is an inclined posture rotated about the hinge 93 outward in the thickness direction of the shutter curtain 12. Therefore, even if the position of the weight member 40 at this time is shifted outward in the thickness direction of the shutter curtain 12, the weight member 40 can be received by the receiving member 91 more reliably.

  Also in this embodiment, when the weight member is the weight member 40 that is not guided by the weight member guide rail in the vertical movement, unlike the weight member 70 of FIG. However, this embodiment can also be applied when the weight member is the weight member 70 of FIG. Further, the deformable connecting means for connecting the weight member to the immovable member may be the roller chains 41 and 71, or the link mechanism 61 of FIG.

  In order to receive the weight member, the receiving member 51 in FIG. 6 and the like, the receiving member 81 in FIG. 11 and the receiving member 91 in FIG. The present invention can also be applied to a shutter device in which the deformable connecting means using the roller chains 41 and 71 and the link mechanism 61 is not employed. When the receiving members 51, 81, 91 are provided on the shutter curtain 12 of such a shutter device, the shutter curtain 12 is moved from the fully open position to the fully closed position while the weight members are received by the receiving members 51, 81, 91. Will reach. The weight members may be received by the receiving members 51, 81, 91 when the shutter curtain 12 opens and moves from the fully closed position to the fully open position, or the shutter curtain that has reached the fully closed position. An operator removes the weight member from the twelve receiving members 51, 81, 91, so that the shutter curtain 12 opens and moves from the fully closed position to the fully opened position without receiving the weight member by the receiving members 51, 81, 91. The weight member may be received by an operator or the like on the receiving members 51, 81, 91 of the shutter curtain 12 that has reached the fully open position.

  Further, the weight member guide rail 73 shown in FIG. 10 can also be applied to a shutter device in which the above-described deformable connecting means using the roller chains 41 and 71 and the link mechanism 61 is not employed. In this case, the vertical movement distance of the weight member is defined by the vertical length of the weight member guide rail 73, and the shutter curtain 12 is provided with the receiving member 51 of FIG. 6 and the like, the receiving member 81 of FIG. By providing the receiving member 91, the downward movement of the shutter curtain 12 can be performed while the weight member is received by the receiving members 51, 81, 91 that are lowered together with the shutter curtain 12, and the weight member is The lowering of the weight member may be stopped by reaching the closed lower end of the weight member guide rail 73. In this case, when the shutter curtain 12 is moved from the fully closed position toward the fully opened position, the weight member is received by the receiving members 51, 81, 91 raised by the opening movement of the shutter curtain 12, and thereafter The weight member is guided by the weight member guide rail 73 and is lifted together with the shutter curtain 12.

  15 and FIG. 16 which is a cross-sectional view taken along line S16-S16 in FIG. 15 show that the sheet forming the sheet portion 30 of the shutter curtain 12 bends in the thickness direction of the shutter curtain 12 due to the pressure of fire smoke or the like. An embodiment which can prevent the above will be described. The sheet portion 30 of this embodiment is formed of sheets 101 and 102 arranged side by side in the left-right direction, which is the width direction of the shutter curtain 12, and a metal or the like is formed on the opposite ends of these sheets 101 and 102. Vertical reinforcing members 103 to 106 made of a hard material are arranged, and the reinforcing members 103 and 104 arranged on both the front and back sides of the shutter curtain 12 are fixed to the end portion of the sheet 101 by a fixing tool 107, and the shutter Reinforcing members 105 and 106 disposed on both the front and back sides of the curtain 12 are fixed to the end portion of the sheet 102 with a fixing tool 108. Among the plurality of fasteners 107 and 108 in the vertical direction, the uppermost fasteners 107 and 108 are connected to connect the hard portion 20 and the seat portion 30 of the shutter curtain 12 by the slat 21 described above. Coupled to member 22.

  Further, as shown in FIG. 16, each of the reinforcing members 103 to 106 has an L-shaped horizontal cross section orthogonal to the longitudinal direction which is the vertical direction. The reinforcing members 103 and 105 aligned in the direction are engaged with each other in the thickness direction of the shutter curtain 12, and the reinforcing members 104 and 106 aligned in the width direction of the shutter curtain 12 are also in the thickness direction of the shutter curtain 12. The reinforcing members 103 and 104 are in contact with each other in the thickness direction of the shutter curtain 12, and the reinforcing members 105 and 106 are in contact with each other in the thickness direction of the shutter curtain 12.

  For this reason, in this embodiment, it is the same as that a longitudinally long strength member made of a hard material such as metal is provided by the reinforcing members 103 to 106 in the middle portion of the sheet that forms the sheet portion 30 in the left-right direction. Since the reinforcing members 103 to 106 do not shift in the thickness direction of the shutter curtain 12 due to the above-described meshing state of the reinforcing members 103 to 106, even if pressure such as fire smoke acts on the sheet 101 or 102. The sheets 101 and 102 are suppressed from being greatly bent in the thickness direction of the shutter curtain 12, and the reinforcing members 103 to 106 are bending suppression members.

  This embodiment can be used particularly effectively for a shutter device for a large span having a large width dimension in the left-right direction of the shutter curtain 12. Depending on the span length of the large span shutter device, the number of the strength members in the left-right direction may be one or plural.

  The reinforcing members 103 and 104 are formed of a single member, and the reinforcing members 105 and 106 are also formed of a single member, and these members are engaged with each other so that the meshing state of FIG. 16 is realized. You may let them.

  Further, the receiving member forming the receiving portion 50 in this embodiment may be the receiving member 51 shown in FIG. 6 or the like, the receiving member 81 shown in FIG. 11 or the like, or the receiving member 91 shown in FIG. Often.

  In this embodiment, since the reinforcing members 103 to 106 are strength members that cannot be deformed, the winding of the shutter curtain 12 by the winding shaft 10 is performed by the hard portion 20, and the sheet portion 30 is wound up. Applicable to shutter devices that cannot.

  INDUSTRIAL APPLICABILITY The present invention can be used for various shutter devices including smoke-proof shutter devices, smoke-proof banner devices, awning devices, and the like provided with an opening / closing body that is closed and moved downward.

FIG. 1 is a front view showing the entire shutter device for disaster prevention that is an opening / closing device according to an embodiment of the present invention, and is a view showing when the shutter curtain that is an opening / closing body has reached a fully closed position. . FIG. 2 is a front view showing the shutter curtain of the disaster prevention shutter device of FIG. 1 when it reaches the fully open position. FIG. 3 is a front view showing only a lintel member, left and right shutter curtain guide rails, a weight member, and a weight member-related member. FIG. 4 is a cross-sectional view taken along line S4-S4 of FIG. 3 showing a connection structure between a weight member by a roller chain that is a deformable connection means and a lintel member that is a stationary member. FIG. 5 is a cross-sectional view taken along line S5-S5 of FIG. 6 is a cross-sectional view taken along line S6-S6 of FIG. FIG. 7 is a view similar to FIG. 6 showing when the weight member is received by the receiving portion provided on the shutter curtain. FIG. 8 is a partially enlarged front view of the shutter curtain showing when the lower end of the shutter curtain hits an obstacle present on the floor. FIG. 9 is a view similar to FIG. 3 showing an embodiment in which the deformable connecting means is a link mechanism. FIG. 10 is a view similar to FIG. 3 showing an embodiment in which a weight member guide member for guiding the vertical movement of the weight member is provided. FIG. 11 is a view similar to FIG. 6 showing another embodiment of the receiving member of the receiving portion for receiving the weight member. FIG. 12 is a view similar to FIG. 7 in the embodiment of FIG. FIG. 13 is a view similar to FIG. 6 showing still another embodiment of the receiving member of the receiving portion for receiving the weight member. FIG. 14 is a view similar to FIG. 7 in the embodiment of FIG. FIG. 15 is a partially enlarged front view of the shutter curtain showing an embodiment in which a sheet forming the sheet portion of the shutter curtain can be prevented from bending in the thickness direction of the shutter curtain. 16 is a cross-sectional view taken along line S16-S16 in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Crib member which is a stationary member 3A Slit 10 Winding shaft 12 Shutter curtain which is an opening / closing body 20 Hard part 21 Slat 30 Sheet part 31, 101, 102 Sheet 40, 70 Weight member 41, 71 Roller which is a deformable connecting means Chain 42, 72 Groove-shaped member which is a storage member for storing the roller chain 50 Receiving portion 51, 81, 91 Receiving member 61 Link mechanism 73 which is a deformable connecting means 73 For weight member which is a guide member for weight member Guide rail

Claims (7)

An opening / closing body that is closed and moved at least downward, and a weight member that is received by a receiving portion provided in the opening / closing body and assists the start of the closing movement by weight when the closing movement of the opening / closing body starts. In switchgear,
The weight member is connected to an immovable member that is immovable with respect to the opening / closing body via a deformable connecting means that is deformable when the opening / closing body is opened and closed ,
The weight member is provided with a storage member for storing the deformable connecting means when the opening / closing body reaches the fully open position on the upper surface of the weight member. A groove-type member attached to the upper surface of the weight member with the portion facing upward,
The lower end of the deformable connecting means is connected to the groove member,
The weight member is an elongated member elongated in the left-right direction, which is the width direction of the opening / closing body, and the groove member has a length over the entire length of the weight member,
The opening / closing apparatus characterized in that the deformable connecting means is a string-like member . 2. The switchgear according to claim 1 , wherein the immovable member is a lintel member in which a slit through which the switchgear is vertically inserted is formed. The switchgear according to claim 1 or 2 , further comprising a weight member guide member for guiding a vertical movement of the weight member. 2. The switchgear according to claim 1 , further comprising a weight member guide member that guides the vertical movement of the weight member, wherein the stationary member is the weight member guide member. In switchgear according to claim 1, before Symbol receiving unit, switchgear, characterized by being formed by a plurality juxtaposed receiving member in the lateral direction in the opening and closing member. The opening / closing apparatus according to any one of claims 1 to 5 , wherein an upper end of the opening / closing body is coupled to a winding shaft that is freely rotatable, and the opening / closing movement of the opening / closing body is determined by rotation of the winding shaft. An opening / closing device characterized by The switchgear according to any one of claims 1 to 6 , wherein at least a lower part of the switchgear that is on the closed side is formed of a sheet.

Images