JP3761421B2 - Switchgear - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an opening / closing device that shields an opening by moving a shielding member such as a shutter curtain installed in an opening of a structure housing including a building such as a building, factory, or warehouse.
[0002]
[Prior art]
In general, in openings such as passages inside buildings such as buildings with large floor areas, for example, shutter curtains for fire protection that close automatically when a fire occurs to prevent the spread of fire and the spread of smoke in the event of a fire, etc. An opening / closing device that operates to form a three-dimensionally enclosed space, that is, a fire prevention compartment, is provided with a pillar, a wall, a floor, a ceiling, and the like. In addition, there is a type in which the opening is simply shielded by a shielding member.
[0003]
Recently, by rotating the guide rail, the guide rail is stored together with the shutter curtain, which is a shielding member, on the ceiling, etc., so that the guide rail is usually not present in the opening. An opening / closing device is proposed which is configured such that the guide rail is also extended and installed in accordance with the shielding operation. As an opening / closing device using such a guide rail as a rotational movement type, for example, there are those described in JP-A-10-102947 and JP-A-11-22343. Moreover, there exists what was described in Japanese Patent Application No. 2001-109756 for which the applicant of this application applied previously.
[0004]
[Problems to be solved by the invention]
In the opening / closing device in which the guide rail is rotationally movable as described above, the guide rail is normally housed in the ceiling or the like, and the guide rail does not exist in the opening. Since it is not obstructed and the floor area is not narrowed, it is preferable as an opening / closing device installed in a wide opening. However, even with the opening and closing device as described above, an obstacle detection device or the like is attached even though it is preferable to stop the shielding operation due to the presence of some obstacle during the shutter curtain shielding operation. Was not proposed.
[0005]
It is an object of the present invention to provide an opening / closing device capable of detecting an obstacle that becomes an obstacle to the shielding operation of the shielding means of the opening / closing device provided with the guide means that is installed to rotate. .
[0006]
[Means for Solving the Problems]
A first feature of the switchgear according to the present invention is that: a shielding means that moves so as to shield the opening; a guide means that is provided so as to sandwich the shielding means from the front and rear by rotating; and the shielding means And an obstacle detection means for detecting the presence of an obstacle on the moving path during the shielding operation. The shielding means is constituted by a shielding member such as a shutter curtain that shields an entrance / exit, a window, or an opening such as an internal passage or space in a structure such as a building, a house, a factory, or a warehouse. When the shielding means is a shutter curtain, the shutter is stored in the upper part of the opening of a building or the like, and the shutter curtain descends through a lintel or the like to shield the opening. In addition, the shielding means may be housed in the side surface of the opening and shielded by a horizontal pulling method, or may be housed in the lower part of the opening and shielded by an ascending method. When the opening is large, it is often difficult to shield the opening with a single shielding means. Therefore, the large opening is shielded by connecting or providing a plurality of shielding means. At this time, a guide means is provided between the shielding means and the shielding means for guiding each shielding means by dividing the opening. The guide means in the present invention is usually stored in, for example, a ceiling portion above the opening, and is rotated and moved according to the shielding operation of the shielding means to divide the opening. It is installed so as to sandwich it. This guide means may be constituted by one, or may be constituted by folding two or more. The obstacle detection means detects the presence of an obstacle on the moving path during the shielding operation of the shielding means, and is constituted by, for example, a seat plate switch provided on the shielding means. When the obstacle detecting means detects an obstacle, it is possible to perform control such as stopping the shielding operation of the shielding means in accordance with the obstacle.
[0007]
A second feature of the switchgear according to the present invention is that, in the first feature, the guide means is configured such that the obstacle detection means has an obstacle on a moving path during the shielding operation of the shielding means. It detects so that it may not be obstructed by the rotational movement of. Since the guide means rotates so as to sandwich the shielding means from both the front and rear surfaces, it may be difficult to provide the obstacle detection means on the range in which the guide means rotates. Therefore, according to the present invention, the obstacle detection means is configured to be able to detect an obstacle so as not to be obstructed by the rotational movement of the guide means.
[0008]
According to a third feature of the switchgear according to the present invention, in the second feature, the obstacle detection means detects the obstacle and outputs a detection signal thereof, and the detection signal. Control means for controlling the shielding operation of the shielding means, and signal transmission means configured to transmit the detection signal to the control means side so as not to be obstructed by the rotational movement of the guide means. is there. The signal output means outputs a detection signal by touching an obstacle such as a seat plate switch. When the signal output means outputs a detection signal, the control means controls to stop the shielding operation of the shielding means according to the input of the detection signal. There are various signal transmission means for transmitting a detection signal from the detection signal output means to the control means. For example, there are a wireless system in which a detection signal is emitted and emitted as infrared light, which is received by a light receiving element, and transmitted to the control means, and a wired system in which the detection signal is transmitted to the control means via a wiring. In the case of the signal transmission means using the wireless system or the wired system in this way, the detection signal is transmitted to the control means side so as not to be obstructed by the rotational movement of the guide means in consideration of the rotational movement of the guide means. Need to be configured. For example, in the case of a wireless system, guide means that rotates between the transmission (light emission) side and the reception (light reception) side is inserted so as not to block or obstruct them. In the case of the wired system, wiring is performed such that the wiring does not come into contact with the rotating guide means, or the guide means itself is wired. As a result, the detection signal is transmitted to the control means without being obstructed by the rotational movement of the guide means.
[0009]
According to a fourth feature of the switchgear according to the present invention, in the third feature, the signal transmission means passes the portion avoiding the rotational movement range of the guide means and sends the detection signal to the control means side. To communicate. This is because when the signal transmission means is a wired system, the wiring portion is wired so as not to come into contact with the rotating guide means, and when the signal transmission means is a wireless system, the guide means is rotated on the signal transmission path. A signal transmission path is formed so as not to enter.
[0010]
According to a fifth feature of the switchgear according to the present invention, in the third feature, the signal transmission means outputs information corresponding to the detection signal, and information output from the information output means. Information input means for inputting. This relates to a wireless system in which the signal transmission means includes both information output means and information input means.
[0011]
According to a sixth feature of the switchgear according to the present invention, in the third or fourth feature, the signal transmission means includes a wiring means for transmitting the detection signal to the control means side. is there. This relates to a wired system in which the signal transmission means is composed of wiring means. The wiring means includes various parts such as a cord reel, a pulley, and a guide roller, which are wiring auxiliary parts.
[0012]
According to a seventh feature of the present invention, in the sixth feature, at least a part of the wiring means is provided via the guide means. When the signal transmission means is composed of the wiring means, the wiring means is entirely wired so as not to contact the guide means, and conversely, at least a part of the wiring means is wired via the guide means. There is. This is for the latter case. This is because by actively using the guide means for wiring, the detection signal can be transmitted to the control means without being obstructed by the rotational movement of the guide means.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
A fire protection shutter device according to an embodiment of the switchgear according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a diagram showing an outline of a fire shutter device according to the present invention, and is a front view showing a state in the middle of a shielding operation of a shutter curtain as a shielding member as a shielding means, and FIG. It is a front view which shows a state. This fireproof shutter device is housed in the upper part of the opening of a ceiling or the like in a so-called folded state in which the guide rail as a guide means bends in the vicinity of the center and both side surfaces are in close contact or substantially in close contact with each other. In conjunction with the descending operation of the slat curtain made of a number of strip-shaped slat members constituting the slat material, the slat curtain is sequentially lowered and fed out in the manner shown by dotted lines as shown in FIG. 1, and finally as shown in FIG. A simple guide rail.
[0014]
The fire shutter device is arranged side by side on the side of the beam 24 above the opening. One fire shutter device is composed of brackets 11A, 12A, a winding shaft 13A, a slat curtain 14A, movable guide rails 15A, 16A, 17A, 18A, and the like. Another fire prevention shutter device includes brackets 11B and 12B, a take-up shaft 13B, a slat curtain 14B, movable (rotating) guide rails 15B and 16B, a fixed guide rail 17B, and the like. Further, the fire shutter device itself may be provided with a door or a slit that can be passed for evacuation or rescue activities. In addition to the above, the fire shutter device includes a case that covers a storage portion such as a take-up shaft, an open / close device that closes the slat curtains 14A and 14B while controlling the speed, an automatic closing device, and a manual closing device. It is omitted.
[0015]
The brackets 11A, 12A, 11B, and 12B are attached to the side surfaces of the beam 24 between the columns 21 and 22 on both sides. The winding shaft 13A is rotatably mounted between the brackets 11A and 12A, and the winding shaft 13B is rotatably mounted between the brackets 11B and 12B. The slat curtains 14A and 14B are attached to the winding shafts 13A and 13B, respectively, and are wound and fed out. 1 and 2 show the case where the slat curtains 14A and 14B are simply wound around the winding shafts 13A and 13B, the winding is performed via the intermediate drum 53 as shown in FIG. The shaft 51 may be configured to wind up the slat curtain 14C. The motor 52 winds the shielded slat curtain 14C by rotating the winding shaft 51. Instead of the motor 52, a mechanism for winding manually may be provided.
[0016]
The movable guide rails 15A and 16A, the guide rails 17A and 18A, and the guide rails 15B and 16B have the same configuration. The guide rails 15A, 16A, 17A, 18A, 15B, and 16B are coupled so that opposite ends thereof are rotatable about an axis. That is, the guide rails 15A and 16A, the guide rails 17A and 18A, and the guide rails 15B and 16B are all connected by a link structure. When the slat curtain 14A and the slat curtain 14B are wound around the winding shafts 13A and 13B and stored in the upper part of the opening, the guide rails 15A and 16A, the guide rails 17A and 18A, and the guide rails 15B and 16B are Then, it is folded at the link part and stored in the upper part of the opening. Then, when the slat curtains 14A and 14B are lowered, the respective intersecting angles formed by the two guide rails 15A and 16A, the guide rails 17A and 18A, and the guide rails 15B and 16B are gradually increased in conjunction with the operation, Gradually descend. When the descent of the slat curtains 14A and 14B is completed, the two guide rails 15A and 16A, the guide rails 17A and 18A, and the guide rails 15B and 16B become substantially straight as shown in FIG. . Although not shown in FIGS. 1 and 2, the guide rails 15A and 16A, the guide rails 17A and 18A, and the guide rails 15B and 16B sandwich the slat curtains 14A and 14B from the front and rear, that is, the surface of the slat curtain. The same guide rail is provided on both the front surface which is the side and the rear surface which is the back surface side, and is sandwiched from both the front and back surfaces of the slat curtains 14A and 14B and interlocked with the operation of the slat curtains 14A and 14B. It is structured to rotate along both the front and back surfaces. Further, the guide rails 15A and 16A, the guide rails 17A and 18A, and the guide rails 15B and 16B are folded so that the side surfaces thereof are in close contact or substantially in close contact with each other. The (width direction) length should just be a length which can accommodate two guide rails. In the case of the right fire shutter device, the overall lateral direction (width direction) length may be any length that can accommodate one guide rail. Therefore, in addition to an opening having a long horizontal dimension (width direction) or an opening having a horizontal dimension (width direction) and a vertical dimension (height direction) of the same dimension, as in the fire shutter device on the right side. Further, it can be installed even in an opening that is long in the vertical direction, that is, having a long dimension in the height direction, and is not limited by the shape of the opening.
[0017]
In FIG. 1 and FIG. 2, since a section such as a fire prevention section is formed by the pillars 21 and 22, the ceiling 25, the slat curtains 14 </ b> A and 14 </ b> B, and the slab 20, the fire door 19 for evacuation is the guide rail 15 </ b> A of the fire shutter device. It is provided in contact with 16A. The fire door 19 is provided in a space formed by the pillar 21, the guide rails 15 </ b> A and 16 </ b> A, and the ceiling 25. There are two types of fire doors: a normally closed type and a normally open type depending on the structure of the building. The fire door 19 shown in this embodiment is always open, and normally the fire door is housed on the side of the pillar 21 or the like, and the shielding operation of the slat curtains 14A and 14B and the guide rail 15A, The fire door is closed in conjunction with the feeding operation of 16A or not interlocked, and the fire door is closed later or closed earlier. In the case of a normally open fire door, a passage for evacuation or the like that can be passed by a submerged door provided separately in the closed fire door is secured. In the case of a normally closed type fire door, the fire door is opened outward from the section, that is, in the passing direction, and is automatically closed by a door check or the like. Therefore, in the case of a normally closed type fire door, the guide rails 15A and 16A are provided with a fixed type like the guide rail 17B. The fire door used in this embodiment may be either a normally closed type, a normally open type or a fire door depending on the structure of the building. Moreover, when the shutter curtain which is a shielding means is a sheet form, there may be provided an opening (slit) through which it can pass for an escape passage or the like.
[0018]
A side plate of the fire door 19 is provided with a contact member such as a contact plate for contacting the guide rails 15A and 16A. The slat curtains 14A, 14B and the guide rails 15A, 16A, 17A, 18A, 15B, 16B are raised and lowered via the lintels. The state in which the slat curtains 14A and 14B are wound around the winding shafts 13A and 13B, respectively, and the guide rails 15A, 16A, 17A, 18A, 15B, and 16B are folded and stored in the ceiling is a normal state. In this state, the lowermost seat plates of the slat curtains 14A and 14B are close to and substantially opposed to the side surfaces of the guide rails 15A, 17A and 15B. The upper ends of the guide rails 16A, 18A, 16B are rotatably coupled to brackets 11A, 12A, 11B provided on the beam 24, and the lower ends of the guide rails 15A, 17A, 15B are connected to the slat curtains 14A, 14B. Of the slat curtains 14A and 14B, which are rotatably connected to the lateral ends of the slat curtains 14A and 14B. The upper ends of the guide rails 16A, 18A, and 16B may be provided directly or indirectly on the side of the beam of the building, the ceiling, the upper floor slab or the like, or a fire shutter device other than the bracket such as a lintel. You may attach to the other member to comprise. When a fire occurs, the fire shutter device responds to a signal from a sensing device (not shown) such as a smoke sensor or a heat sensor, and the slat curtains 14A, 14B and guide rails 15A, 16A, 17A, 18A, 15B, 16B. Is automatically lowered to close the opening formed by the columns 21, 22, the ceiling 25, and the slab 20. The detailed configuration of the guide rails 15A, 16A, 17A, 18A, 15B, and 16B has been described in the previous application (Japanese Patent Application No. 2001-109756), and will not be described.
[0019]
The obstacle detection device as the obstacle detection means includes seat plate switches 30A and 30B as detection signal output means, light emitting units 32A and 32B as information output means as signal transmission means, and information input means as signal transmission means. It consists of a certain light receiving part 34A, 34B. The seat plate switches 30A and 30B are provided in the lower part on the closed front end side of the slat curtains 14A and 14B which are shielding members. The seat plate switches 30A and 30B are publicly known, and turn on / off as the upper seat plate, the lower seat plate held so as to be movable up and down with respect to the upper seat plate, and the lower seat plate move up and down. It includes a switch such as a micro switch. The light emitting units 32A and 32B are provided on the upper side of the seat plate switches 30A and 30B, and emit infrared light according to the ON operation of the switch in a wireless manner. That is, when the lower seat plate comes into contact with the obstacle and moves upward, the switch is turned on to output a detection signal for detecting the obstacle and transmit the corresponding information to the light emitting unit 32A. , 32B emits and emits infrared light. Note that the light emitting units 32A and 32B have a built-in battery, and operate by electric power from the battery. The light receiving portions 34A and 34B are provided on the upper ceiling 25 side and at positions facing the light emitting portions 32A and 32B, and receive infrared light from the light emitting portions 32A and 32B wirelessly, and corresponding obstacles A detection signal is received. The light receiving units 34A and 34B are connected to a controller which is a control means (not shown), and output an obstacle detection signal corresponding to the reception of infrared light to the controller. As a result, an obstacle detection signal, that is, information that an obstacle has been detected is transmitted to the controller. The controller controls to stop the descending operation of the slat curtains 14A and 14B based on the input of the obstacle detection signal. In addition to stopping the lowering operation, the slat curtains 14A and 14B may be controlled to move up so that the obstacle detection signal is not output, and other operations, for example, the lowering speed is decreased without stopping. You may control to perform operation | movement of making it perform.
[0020]
The light emitting part 32A and the light receiving part 34A are provided near the center in the lateral direction of the slat curtain 14A. In addition, the light emitting unit 32B and the light receiving unit 34B are located near the right end of the slat curtain 14B (in the drawing, near the center between the right end of the movable range of the guide rails 15B and 16B and the fixed guide rail 17B). Is provided. That is, the light emitting unit 32A, the light receiving unit 34A, the light emitting unit 32B, and the light receiving unit 34B are provided as far as possible from the rotating guide rail. As a result, the guide rails 15A, 16A, 17A, 18A, 15B, and 16B that rotate and move on the line connecting the light emitting units 32A and 32B and the light receiving units 34A and 34B do not pass through, so the seat plate switches 30A and 30B are obstructed. Information in which an object is detected is transmitted to the controller without being obstructed, and the descent of the slat curtains 14A and 14B can be stopped. The light receiving portions 34A and 34B may be provided in the lintel, or may be provided directly or indirectly on the side, ceiling, or floor (slab) of the beam of the building. For example, a shutter case other than the lintel It may be attached via another member constituting the fire shutter device such as a bracket or a bracket, and is preferably arranged at a position close to the controller side which is the control means.
[0021]
FIG. 4 is a diagram showing an outline in a case where obstacle detection signals from the seat board switches 30A and 30B are transmitted to a controller which is a control means on the ceiling 25 side in a wired manner via a cord which is a wiring means. 4, the same components as those in FIG. 1 are denoted by the same reference numerals, and the description thereof is omitted. This embodiment differs from that of FIGS. 1 and 2 in that the on / off signal of the switch of the seat plate switches 30A and 30B, that is, the obstacle detection signal is directly wired via the cords 43A and 43B on the ceiling 25 side. This is a point that is transmitted to the controller. The cord attachment members 42A and 42B electrically connect the switches of the seat plate switches 30A and 30B and the cords 43A and 43B. The cord reels 44A and 44B, which are wiring auxiliary parts, wind the cords 43A and 43B, and always apply a rotational force in the winding direction. Accordingly, when the slat curtains 14A and 14B are lowered, the cords 43A and 43B are unwound, and when the slat curtains 14A and 14B are positioned above, the cords 43A and 43B are wound up, and the cords 43A and 43B are wound up. A constant tension is applied to 43B to eliminate bending, and the cords 43A and 43B are always stretched linearly between the cord attachment members 42A and 42B and the cord reels 44A and 44B. As described above, when the obstacle detection signals of the seat plate switches 30A and 30B are transmitted to the controller using the cords 43A and 43B and the cord reels 44A and 44B, the rotating guide rails 15A, 16A, 17A, 18A, It is necessary to provide the cord attachment members 42A and 42B and the cord reels 44A and 44B at locations where the cords 43A and 43B do not contact the 15B and 16B. The cord attachment member 42A and the cord reel 44A are provided near the center of the slat curtain 14A in the width direction. Further, the cord attachment member 42B and the cord reel 44B are near the right end of the slat curtain 14B (in the figure, near the center between the right end of the movable range of the guide rails 15B and 16B and the fixed guide rail 17B). Is provided. That is, the cord attachment member 42A and the cord reel 44A, the cord attachment member 42B and the cord reel 44B, and the cord 43AP43B are provided at positions as far as possible from the rotating guide rail. In addition, it is good also as a structure using a guide roller, a pulley, etc. for the purpose of components other than code reels 44A and 44B, for example, for the direction change of a cord, etc. as a wiring auxiliary member.
[0022]
FIG. 5 is a diagram showing another embodiment in the case where obstacle detection signals from the seat board switches 30A and 30B are transmitted to the controller on the ceiling 25 side via a cord. In FIG. 5, the same components as those in FIG. 4 are denoted by the same reference numerals, and the description thereof is omitted. In this configuration, the cords 43C and 43D are guided to the cord reels 44C and 44D on the ceiling 25 side through guide rollers or pulleys provided on the side surfaces of the guide rails 18A and 16B. The cords 43C and 43D are stressed toward the guide rails 18A and 16B while the slat curtains 14A and 14B are being lowered as shown in FIG. 5, but the slat curtains 14A and 14B are further lowered from the state shown in FIG. As a result, as shown in FIG. 6, since stress is applied in the direction away from the guide rails 18A and 16B, if the cords 43C and 43D are guided between the two upper and lower guide rollers, they are guided. Good. The cord attachment member 42A is provided near the center in the width direction of the slat curtain 14A, and the cord attachment member 42B is near the right end of the slat curtain 14B (in the drawing, the movable range of the guide rails 15B and 16B). However, these may be provided anywhere as long as they are above the seat plate switches 30A and 30B. 5 and 6, the cord reels 44C and 44D are provided in the vicinity of the rotation centers of the guide rails 18A and 16B, but may be provided at arbitrary positions. Further, the cord reels 44C and 44D may be provided near the rotation center of the guide rails 18A and 16B, and the cord attachment members 42A and 42B may be provided near the lower end portions of the guide rails 17A and 15B. In this case, a guide roller or pulley for changing direction may be provided on the side surfaces of the guide rails 17A, 18A, 15B, 16B. As a result, the cords 43C and 43D are wired along the shapes of the guide rails 17A, 18A, 15B, and 16B, so that the cords 43C and 43D are in contact with some obstacle and disconnected. Less likely to occur. Further, the guide rails 17A, 18A, 15B, and 16B may be passed through, and in that case, the cord reels 44C and 44D may or may not be provided.
[0023]
FIGS. 7 and 8 are diagrams showing an example in which the wireless system of FIG. 1 and the wired system obstacle detection apparatus of FIGS. 4 and 5 are applied to a modified example of the rotating guide rail. In the above-described embodiment, the guide rails 15A, 16A, 17A, 18A, 15B, and 16B are folded and stored in the ceiling 25. However, in FIGS. 7 and 8, the guide rails 16D and 18D are folded. It is comprised so that it may be accommodated in the ceiling 25 as it is. Also in this case, since the guide rails 16D and 18D are rotated and moved out with the slat curtain 14D sandwiched in the front and rear, the transmission and reception of infrared light is disturbed by the rotational movement of the guide rails 16D and 18D. Obstacle detection devices (light-emitting unit 32C, light-receiving unit 34C) are attached at positions where they are not. In the figure, the light emitting unit 32C and the light receiving unit 34C are provided in the vicinity of the center in the width direction of the slat curtain 14D. As a result, the guide rails 16D and 18D that rotate and move on the line connecting the light emitting unit 32C and the light receiving unit 34C do not pass through, so that the information on which the obstacle is detected by the seat plate switch 30C is not obstructed and is transferred to the controller side. As a result, the descent of the slat curtain 14D can be stopped. In the case of FIG. 7, the obstacle detection device is provided between the guide rails 16D and 18D in the vicinity of the center in the width direction of the slat curtain 14D, that is, the light emitting part 32C and the heavy part as in FIGS. 34C is provided at a position as far as possible from the rotating guide rails 16D and 18D. In addition, even when an obstacle detection signal is transmitted / received via a cord, a cord attachment member, a cord reel, or the like as shown in FIG. 4, these members should be provided near the middle of the guide rails 16D and 18D as shown in FIG. Is preferred. FIG. 8 shows that the cord 43E is guided to the cord reel 44E on the ceiling 25 side via a guide roller or pulley provided on the side surface of the guide rail 16D, as in the case of FIG.
[0024]
In the above-described embodiment, the fire shutter device that is shielded by being drawn out while the shutter curtain that is a shielding member descends has been described as an example, but other than this, the shielding member is drawn out by a horizontal pulling method or by a lifting method. The same applies to the case of being drawn out or being drawn out in a horizontal manner. In addition to fire prevention purposes, it can also be applied to purposes such as smoke prevention, crime prevention, sun protection, rain protection, etc., depending on the installation location and surrounding environment, conditions, and various circumstances. Examples of the opening / closing device include a shutter device, a blind device, a roll screen device, and a curtain device. When the opening / closing device is a shutter device, the shielding member that is a shielding means is a shutter curtain, and the configuration is such that a slat curtain made of a large number of strip-shaped slat materials and a large number of pipe materials are connected by link materials. Pipe grill curtains, panel curtains made of single or multiple connected panel materials, net curtains made of net materials, sheet curtains made of synthetic resin or cloth fiber sheet materials, or composites made of these composite members This is due to curtains. The material of the shielding member that is the shielding means may be any material as long as it meets the purpose of use. Specifically, it can be made of metal, wood, plastic, cloth, or a composite of these. In the case of a switchgear installed for the purpose of fire prevention, it is preferable that the material of at least the shielding member as the shielding means has fire resistance.
[0025]
In the above-described embodiment, the seat plate switch has been described as an example of the obstacle detection unit. However, this seat plate switch detects an obstacle by abutting against the obstacle. It may be possible to detect obstacles. For example, as an object that detects an obstacle without contact, an infrared light emitting element and a light receiving element are provided on both sides of the shielding member, and the obstacle is detected when the infrared light is blocked. There is. The obstacle detection means detects an obstacle present in the opening including the periphery of the opening.
[0026]
In the above-described embodiment, the case where the signal detected by the obstacle detection means is transmitted as the obstacle detection information in a wired or wireless manner has been described. However, a mechanical (mechanical) change due to vibration or deflection is detected. It may be transmitted as information. For example, when the shielding member has flexibility, the shielding member itself, or when the cord as the wiring means in FIGS. 4, 5, and 7 is a linear material having simple flexibility such as a wire The shielding member itself or the linear material may constitute the obstacle detection information transmitting means, for example, the linear material may be bent to transmit the obstacle detection information. In this case, it is preferable to transmit mechanical (mechanical) information such as bending to a portion that avoids the moving locus range of the rotating guide rail.
[0027]
In the above-described embodiment, an example in which infrared light is used as a wireless method when transmitting an obstacle detection signal has been described, but a frequency signal (sound wave, ultrasonic wave, radio wave, etc.) may be used. When radio waves or the like are used, the obstruction due to the rotating guide rail is extremely small, so that the obstacle detecting means can be arranged at a relatively free position. Therefore, in the case of a frequency signal, it is preferable that the frequency signal is arranged so as not to be obstructed by the guide rail in the case of an ultrashort wave having a certain degree of straightness. In the above-described embodiment, the cord is used as an example of the wiring means. However, the detection signal may be transmitted by an optical cable using an optical signal such as an optical fiber. Further, the obstacle detection means may be one that detects by fluid pressure such as air by a hollow tube such as a tube, or one that detects by conduction electricity by a belt-like switch such as a tape switch. As described in the above embodiment, the obstacle detection means is prevented from being obstructed by the guide rail that rotates and moves to some extent whether the signal transmission means is a wireless system or a wired system. It is more effective for those with straightness.
[0028]
In the above-described embodiment, the description has been given of the case where the rotating guide rail rotates in conjunction with the shielding operation of the shielding member. However, the present invention is not limited to this, and the guide rail that rotates before the shielding member, or the shielding member It may be rotated later. Further, the obstacle detection means may be one that transmits a detection signal that is detection information when an obstacle is detected, and may also transmit removal information when the obstacle is removed. It may be transmitted with the information added. Further, the obstacle detection signal may be transmitted in a single shot, or may be transmitted continuously or intermittently. If the signal transmission means for transmitting the obstacle detection signal is arranged so as not to be obstructed by the guide means that rotates, for example, even if provided along at least one surface before and after the shielding means, The inside of the shielding means may be inserted and provided. When the detection signal output means, which is an obstacle detection means, is provided in the shielding means, at least a part of the detection signal output means is closer to the closing tip (closed) than at least a part of the rotating and moving guide means. More preferably, it is disposed on the direction side. The driving method of the switchgear is arbitrary such as an electric type and a self-weight drop type.
[0029]
【The invention's effect】
As described above, according to the opening / closing apparatus of the present invention, it is possible to detect an obstacle that obstructs the shielding operation of the shielding means of the opening / closing apparatus provided with the guide means that is installed to rotate. There is an effect.
[Brief description of the drawings]
FIG. 1 is a diagram schematically showing a fire shutter device according to the present invention, and is a front view showing a state in the middle of a shutter curtain shielding operation.
2 is a front view showing a fully closed state of a shutter curtain of the fire-proof shutter device of FIG. 1. FIG.
FIG. 3 is a view showing an example of a winding mechanism of a slat curtain.
FIG. 4 is a diagram showing an outline when an obstacle detection signal from a seat board switch is transmitted to a controller on the ceiling side via a cord.
FIG. 5 is a diagram showing another embodiment in the case where an obstacle detection signal by a seat board switch is transmitted to a controller on the ceiling side via a cord.
6 is a front view showing a fully closed state of the shutter curtain of the fire-proof shutter device of FIG. 5. FIG.
7 is a diagram showing an example of a case where the wireless safety device of FIG. 1 is applied to a modified example of a rotating guide rail.
FIG. 8 is a diagram showing an example in which the wired safety device of FIG. 4 is applied to a modified example of the rotating guide rail.
[Explanation of symbols]
11A, 11B, 12A, 12B ... Bracket, 13A, 13B, 51 ... Winding shaft, 14A, 14B ... Slat curtain, 15A, 16A, 17A, 18A, 15B, 16B ... Guide rail, 19 ... Fire door, 20 ... Slab 21, 22 ... pillar, 23 ... upper slab, 24 ... beam, 25 ... ceiling, 30 A to 30 C ... seat plate switch, 32 A to 32 C ... light emitting part, 34 A to 34 C ... light receiving part, 42 A to 42 C ... cord attachment member 43A to 43E ... cords, 44A to 44E ... cord reels, 52 ... motors, 53 ... intermediate drums,

Claims (4)

A shielding means that is accommodated in a peripheral portion of the opening and moves so as to shield the opening;
In the state of being accommodated in the peripheral portion of the opening, the side surface is close to and substantially opposite to the closing-side tip of the shielding means, and is rotated and moved in conjunction with the shielding operation of the shielding means. And a guide means provided so as to be drawn out from the peripheral edge of the opening and sandwich the shielding means from the front and rear,
Detecting the presence of an obstacle on the moving path during the shielding operation of the shielding means provided so as not to be obstructed by the rotational movement of the guide means, provided at the closed end of the shielding means, and detecting the detection signal Detection signal output means for outputting;
Control means for controlling the shielding operation of the shielding means based on the detection signal;
Wiring provided along the guide means for rotating the detection signal output from the detection signal output means provided at the closed end of the shielding means so as not to be obstructed by the rotational movement of the guide means And a signal transmission means configured to transmit to the control means side provided on the side where the shielding means is accommodated via the means. 2. The opening / closing apparatus according to claim 1, wherein the guide means is accommodated in a peripheral portion of the opening without being folded. 2. The opening / closing device according to claim 1, wherein the guide means is folded and stored in a peripheral portion of the opening. 2. The opening / closing apparatus according to claim 1, wherein when the shielding means is provided side by side on the periphery of the opening, at least one of the shielding means rotates and the periphery of the opening switchgear is guided by the guide means fixedly provided in the section, said wire means, characterized that you have provided along the guide means for the rotational movement.

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