JP2007231672A - Harmless device for gravity falling shutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an harmless device and a shutter capable of safely and positively completing gravity falling in case of a fire. <P>SOLUTION: The gravity falling shutter is constituted to continuously supply electricity from an interlocking controller 9 to an automatic closing device 7 constituting the harmless device or to comprise a capacitor and a charging device for the capacitor and to supply electricity from the capacitor to the automatic closing device 7. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a hazard prevention device for a self-weight descent shutter that forms a compartment for fire prevention and smoke prevention in a fire.

  Parts used for elevators and escalators and buildings of a certain size or larger are required to form fire prevention zones in order to prevent the spread of fire and the spread of smoke when a fire, etc. occurs. A self-weight descent shutter is installed as a fire shutter to block the passages. This dead weight descent shutter is made of steel or non-combustible cloth, etc. Normally, the shutter is opened and closed by manual or electric button operation using a commercial power supply, and in the event of a fire, the shutter curtain descends due to its own weight. Is closed to form a fire protection compartment. On the other hand, in order to prevent an accident in which a person is caught in the shutter curtain that is falling under its own weight, it is obliged to install a hazard prevention device for the dead-weight falling shutter. In this harm prevention apparatus, there is a method in which the shutter curtain that descends its own weight detects an obstacle to temporarily stop the shutter closing, and when the obstacle disappears, the dead weight resumption is resumed to complete the closing.

  As a first method of the above-described method, a dead weight lowering shutter 100 in FIG. 14 is known. At normal times, the shutter 105 is stopped without falling by its own weight because the opening / closing machine 105 connected by the chain with the winding shaft 104 of the shutter curtain 101 is braked by a brake. When the sensor 107 detects smoke, heat, flame, or the like due to a fire, a fire signal is transmitted to the interlock controller 108 that controls the fire fighting equipment, and the interlock controller 108 sends the fire fighting equipment to the fire fighting equipment for a certain period of time using its own emergency battery. Only send the activation signal and supply electricity. The interlocking repeater 111 that has received the operation signal and electricity supplies electricity continuously to the automatic closing device 106 that constitutes the safety prevention device of the shutter 100 by using an emergency battery provided for itself. The automatic closing device 106 is a device for releasing the braking by the brake of the switch 105 by a mechanical method. Since the brake returns to the braking state when the power is turned off, the continuous electric power from the interlock repeater 111 is obtained. , The brake release of the brake is maintained, and the shutter curtain 101 starts its own weight drop. The lowermost seat plate of the shutter curtain 101 is provided with a seat plate switch 109 that constitutes a hazard prevention device, and the seat plate switch 109 is connected to the automatic closing device 106. When the shutter curtain 101 comes into contact with an obstacle during the fall of its own weight, the seat plate switch 109 is closed, and the automatic closing device 106 is returned to the initial state by the control in the internal circuit of the automatic closing device 106. The shutter curtain 101 is braked by the brake. When there are no obstacles, the seat plate switch 109 is opened, the braking by the brake of the switch 105 is released under the control of the internal circuit of the automatic closing device 106, the shutter curtain 101 resumes its own weight drop, and there is no obstacle. The closing of the shutter 100 is completed. Here, the reason for using the interlock repeater 111 is that electricity is supplied from the interlock controller 108 only for a certain period of time. This is because the automatic closing device 106 needs to be continuously supplied with electricity even when the supply is stopped. In the above, electricity is supplied from the emergency battery of the interlock controller 108 and the interlock repeater 111, but a commercial power source is used except during a power failure.

  FIG. 15 is an electric circuit diagram of the first method described above. The interlocking controller 108 that has received the fire signal from the sensor 107 supplies an operation signal and electricity to the D terminal of the interlocking repeater 111 for a certain period of time by an emergency battery provided for itself. In response to this operation signal and electricity, the interlock repeater 111 supplies continuous electricity from the SD terminal to the automatic closing device 106 by an emergency battery provided for itself. In the automatic closing device 106, electricity enters the timer circuit 121, and the brake release motor 123 and the electromagnetic clutch 124 are energized immediately by the control of the timer circuit 121 regardless of the timer setting time, and the brake release motor 123 is driven. The brake is released and the brake released state is maintained by the electromagnetic clutch 124. Thereby, the shutter curtain 101 falls by its own weight. When the shutter curtain 101 comes into contact with an obstacle and the seat plate switch 109 is closed, the electromagnetic clutch 124 is released by the control of the timer circuit 121 and the electromagnetic clutch 124 is released, and the brake is in a braking state. The weight descent of the shutter curtain 101 stops. On the other hand, when the obstacle disappears, the seat plate switch 109 is opened, but the brake releasing motor 123 and the electromagnetic clutch 124 are not energized until the set time elapses under the control of the timer circuit 121. Thereby, even if the obstacle disappears, the shutter curtain 101 does not fall by its own weight within the set time of the timer circuit 121, so that further safety is achieved. After the set time has elapsed, the shutter curtain 101 resumes its own weight drop, and if there is no obstacle, the shutter closing is completed.

  As a second method, the operation signal and electricity supplied from the interlock controller are received directly by the automatic closing device instead of the interlock repeater to release the brake of the switch, and the shutter curtain starts its own weight drop shutter. It has been known. In this case, the automatic closing device uses a structure that switches between braking and releasing of the switch by instantaneous electricity, such as an electromagnetic solenoid that does not require energization to maintain the operation. The shutter curtain starts to descend by its own weight by instantaneously releasing the brake by receiving a direct operation signal and electricity. On the other hand, since the operation signal and the supply of electricity from the interlock controller are for a fixed time, the harm prevention apparatus operates by receiving the supply of electricity from the emergency battery of the interlock repeater. When the seat plate switch is closed by an obstacle, electricity is supplied from the interlock repeater to the automatic closing device, the automatic closing device is activated instantaneously, the switch is braked by the brake, and the weight drop of the shutter curtain stops. When the obstacle disappears and the seat switch is opened, electricity is supplied from the interlock repeater to the automatic closing device, and the automatic closing device operates instantaneously to release the brake of the switch by the brake, and the shutter curtain descends its own weight. If there is no obstacle, the shutter closing is completed.

Furthermore, Patent Document 1 discloses a safety device for an electric weight drop shutter that does not include an interlocking repeater in the first method. In this safety device, when the automatic closing device directly receives the operation signal and electricity supplied from the interlock controller, the brake release state of the opening / closing motor constituting the opening / closing device is maintained, and the shutter curtain starts to descend by its own weight. When the seat plate switch is turned on by an obstacle, a micro switch that is linked to the seat plate switch of the automatic closing device is opened to cut off the energization of the automatic closing device, brake the open / close motor, and stop the shutter curtain. When there are no obstacles, the microswitch closes and the automatic closing device is energized. The braking of the opening / closing motor is released, and the shutter curtain resumes its own weight drop. If there are no obstacles, the shutter is closed. .
JP 2003-176679 A

  However, in the first method, electricity is supplied from the emergency relay battery of the interlock repeater to the automatic closing device, so the shutter curtain starts its own weight drop, so the shutter curtain does not drop its own weight due to the deterioration of the battery. There was a problem that the fire prevention compartment was not formed. In the second method, the interlocked controller is required to be inspected regularly, so that the self-weight drop can be reliably performed by supplying electricity directly from the interlocked controller to the automatic closing device. For this purpose, electricity is supplied to the automatic closing device from the emergency battery of the interlocking repeater, so it is impossible to detect obstacles and supply electricity to the automatic closing device due to the deterioration of the battery. There was a problem of not stopping. Furthermore, in the technique disclosed in Patent Document 1, the interlock controller supplies electricity to the safety device for the self-weight drop shutter, but the supply of electricity from the conventional interlock controller is a fixed time, and the obstacles When the shutter curtain takes a long time to lower its own weight due to the detection of this, the supply of electricity from the interlock controller will be stopped, so the brake release state of the open / close motor by the automatic closing device will not be maintained. It is thought that there is a problem that the descent is not completed and a fire prevention zone cannot be formed.

  Therefore, the present invention provides a safety device and a shutter that can safely and surely lower the weight by not requiring the supply of electricity from the interlocking repeater, and that can reliably complete the formation of the compartment. This is the issue.

  The present invention will be described below. In order to facilitate understanding of the present invention, reference numerals in the accompanying drawings are appended in parentheses, but the present invention is not limited to the illustrated embodiment.

  The invention according to claim 1 is provided in the shutter (1) that closes the opening by its own weight drop, and is directly supplied with the operation signal and electricity from the interlock controller (9) that has received the fire signal of the sensor (8). In response to this, the above problem is solved by providing a hazard prevention device characterized in that the shutter curtain (2) of the shutter is lowered by its own weight, and electricity is continuously supplied from the interlocking controller when the weight is lowered.

  Here, the “shutter” means a shutter main body composed of a shutter curtain, a guide rail, a winding shaft, etc., an open / close device composed of a brake, a speed governor, an open / close motor for an electric shutter, a hazard prevention device, and an electric motor. This refers to the whole of an open / close control unit including an open / close controller and an open / close switch for a shutter. Further, the “hazard prevention device” refers to the entire part used for the weight drop and obstacle detection such as the automatic closing device and the seat plate switch. Furthermore, “continuously” means “always”, not only for a certain period of time or intermittently.

  The invention described in claim 2 is provided in the shutter (1) that closes the opening by its own weight drop, and is directly supplied with an operation signal and electricity from the interlock controller (9) that has received the fire signal of the sensor (8). In response to the above-mentioned problem, the present invention provides a hazard prevention device characterized in that the shutter curtain (2) of the shutter is lowered by its own weight, provided with a capacitor and a charging device for the capacitor, and is supplied with electricity from the capacitor in its own weight drop. Resolve.

  Invention of Claim 3 solves the said subject by providing the shutter (1) provided with the hazard prevention apparatus of Claim 1 or 2.

  According to the first aspect of the present invention, since the hazard prevention device is directly supplied with electricity from the interlock controller, the shutter curtain's own weight drop and the hazard prevention device malfunction caused by the deterioration of the battery of the interlock relay can be prevented. It will be resolved. Moreover, since electricity is continuously supplied by the interlocking controller during its own weight drop, it is possible to complete the closing of the shutter even if it takes time to close. Furthermore, since an interlocking repeater is not required, production costs can be reduced.

  According to the invention described in claim 2, since the harm prevention device operates with electricity stored in the capacitor, even if the supply of electricity from the interlock controller is only for a certain period of time as in the prior art, it is described in claim 1. The same effect as that of the present invention can be obtained.

  According to the invention described in claim 3, since the shutter curtain can be lowered by its own weight safely and reliably according to the invention described in claim 1 or 2, accidents can be prevented in advance and a fire prevention section can be surely provided in the event of a fire. It is possible to provide a shutter that can be formed.

  Such an operation and gain of the present invention will be made clear from the best mode for carrying out the invention described below.

  Hereinafter, an electric steel shutter will be described as an example of the shutter according to the present invention based on the embodiment shown in the drawings. However, the present invention can also be used for other shutters such as a manual shutter and a non-combustible cloth shutter. The following description is an example of an embodiment of the present invention, and the present invention is not limited to the following description unless it exceeds the gist.

  FIG. 1 is a perspective view schematically showing a shutter including a hazard prevention device that is continuously supplied with electricity from the interlock controller of the present invention according to one embodiment. The shutter curtain 2 constituting the shutter 1 is provided with guide rails 3 at both left and right ends perpendicular to the floor surface, and a winding shaft 5 provided on an upper bearing bracket 4 is attached. The electric switch 6 is configured by connecting a speed governor and a brake in series to a rotation shaft of an opening / closing motor, and is connected to the winding shaft 5 by a chain via a sprocket. The automatic closing device 7 is connected to an interlocking controller 9 that receives a fire signal from the sensor 8 by electric wiring, and is attached in contact with the electric switch 6. The seat plate switch 10 is attached to the seat plate at the lowermost end of the shutter curtain 2 and is connected to the automatic closing device 7 by a lead wire 12 wound around the reel 11.

  FIG. 2 is an enlarged view of a connecting portion between the winding shaft 5 and the electric switch 6. The electric switch 6 is connected to the winding shaft 5 by a chain 15 through sprockets 13 and 14. A reel 11 for winding the lead wire 12 from the seat plate switch 10 is provided near the shutter curtain 2 below the winding shaft 5.

  FIG. 3 is an enlarged view and a sectional view of the periphery of the seat plate switch 10. The seat plate switch 10 is attached between a seat plate 16 provided at the lowermost end of the shutter curtain 2 and a touch plate 17 attached to a lower portion of the seat plate 16 so as to be movable up and down. A lead wire 12 connected to the seat plate switch 10 extends along the shutter curtain 2 and is wound around the reel 11 at the top.

  FIG. 4 is a flowchart showing the operation of the shutter provided with the hazard prevention apparatus having the above-described configuration. Under normal conditions, the open / close switch operation (S101) is received, and the open / close controller energizes the open / close motor and brake of the electric switch 6 so that the brake is released and at the same time the open / close motor rotates. , 14, the rotation of the opening / closing motor is transmitted by the chain 15 and the winding shaft 5 rotates, and the shutter curtain 2 moves up and down along the guide rail 3 so that the shutter 1 is opened and closed (S102). When the shutter 1 is opened and closed, the touch plate 17 rises relative to the seat plate 16 when the shutter curtain 2 comes into contact with an obstacle, and the seat plate switch 10 of the contact a (normally open contact) is closed. Obstacle detection is determined by closing the plate switch 10 (S103). When a negative determination is made in step S103 (when there is no obstacle), opening / closing of the shutter 1 is completed upon completion of the operation with the open / close switch (S104). If an affirmative determination is made in step S103 (when there is an obstacle), the opening / closing motor is electrically braked by a brake by a magnet switch or the like using a commercial power source (S105), and the shutter curtain 2 is stopped (S106). ), The process returns to step S101.

  In the event of a fire, the interlock controller 9 that has received the fire signal by the fire detection by the sensor 8 (S201) uses an emergency battery that is charged by a commercial power source at normal times, even during a power outage due to a fire, and automatically closes. An operation signal and continuous electricity are supplied to the device 7 and other fire fighting equipment (S202). Thus, as will be described later, the automatic closing device 7 is operated (S203), and when the brake is released in the electric switch 6, the rotation of the opening / closing motor whose rotational speed is suppressed by the governor is transmitted by the chain 15. Then the winding shaft 5 is rotated. Since the automatic closing device 7 is structured to return to the braking state of the brake when the power is turned off, in order to continue the weight drop, continuous electricity is supplied from the interlock controller 9 to the automatic closing device 7 and the brake is applied. The release needs to be continued. Thereby, the shutter curtain 2 falls by its own weight (S204). When the shutter curtain 2 comes into contact with an obstacle during its own weight drop, the touch plate 17 rises relative to the seat plate 16 and the seat plate switch 10 connected to the automatic closing device 7 is closed. Obstacle detection is determined by closing 10 (S205). If a negative determination is made in step S205 (when there is no obstacle), the shutter 1 is closed (S206). When an affirmative determination is made in step S205 (when there is an obstacle), the seat plate switch 10 is closed, so that the automatic closing device 7 applies the brakes by controlling the electric circuit of the automatic closing device 7 (S207). Returning to the braking state (S208), the opening / closing motor is braked by the brake, and the weight drop of the shutter curtain 2 is stopped (S209). During the stop of the self-weight drop, the removal of the obstacle is determined by opening the seat plate switch 10 (S210). If an affirmative determination is made in step S210 (when the obstacle is removed), the seat plate switch 10 is opened, and therefore, after the set time elapses (S211) under the control of the timer circuit of the automatic closing device 7, the step is performed. It returns to S203. If a negative determination is made in step S210 (when the obstacle is not removed), the closing of the shutter curtain 2 is maintained because the closing of the seat switch 10 is maintained (S212), and thus the closing of the shutter 1 is completed. I can't. In the present embodiment, the automatic closing device 7 is structured such that the opening / closing motor is braked and released by momentary electricity like an electromagnetic solenoid, and the operation signal is received from the interlock controller and from the seat plate switch. When the automatic closing device 7 is activated by the obstacle detection signal, it is possible to brake and release the brake.

  FIG. 5 is an electric circuit diagram of the harm prevention apparatus to which electricity is continuously supplied from the interlock controller 9. The interlock controller 9 is connected to a commercial power source and has an emergency battery. A sensor 8 is connected to an input terminal, and an automatic closing device 7 is connected to an output terminal. The electric circuit of the automatic closing device 7 has an input terminal connected to the timer circuit 21, and the timer circuit 21 energizes the switch 22 and the brake release motor 23 that are in contact with the brake (normally closed contact) linked to the brake release. And a circuit for energizing the electromagnetic clutch 24 are configured. In addition, a seat plate switch 10 with a contact (normally open contact) is connected to the timer circuit 21. With this configuration, when the interlocking controller 9 receives a fire signal from the sensor 8, even if there is a power failure due to a fire, the emergency battery is used to send an operation signal and a continuous signal to the automatic closing device 7 and other fire fighting equipment. Supply electricity. Electricity input to the automatic closing device 7 enters the timer circuit 21 and is immediately output to the brake releasing motor 23 and the electromagnetic clutch 24 by the control of the timer circuit 21 regardless of the timer setting time. When the brake release motor 23 is driven, braking of the brake is mechanically released in the electric switch 6. When the brake is released, the switch 22 is opened and the driving of the brake releasing motor 23 is stopped. On the other hand, since the release of the brake is maintained by the operation of the electromagnetic clutch 24, the weight reduction of the shutter curtain 2 continues. When the shutter curtain 2 comes into contact with an obstacle and the seat switch 10 is closed, the energization of the electromagnetic clutch 24 is interrupted by the control of the timer circuit 21 so that the electromagnetic clutch 24 is released and the brake returns to the braking state. Then, the weight drop of the shutter curtain 2 stops. Further, the switch 22 is closed by braking the brake. When the obstacle disappears, the seat switch 10 is opened, and the continuous electric power is supplied from the interlocking controller 9 so that the timer circuit 21 of the automatic closing device 7 is energized again. Thus, the brake release motor 23 and the electromagnetic clutch 24 are not energized until the set time elapses. As a result, even if the obstacle disappears, the shutter curtain 2 does not fall by its own weight within the set time of the timer circuit 21, so that further safety is achieved. When the brake release motor 23 and the electromagnetic clutch 24 are energized after the set time has elapsed, the braking of the brake is released, and the weight drop of the shutter curtain 2 is resumed.

  FIG. 6 is a diagram schematically showing continuous supply of electricity from the interlock controller. 6A, 6B and 6C show the state of the operation signal and the supply of electricity from the interlock controller 9 to the automatic closing device 7, and the arrows indicate the operation signal and the electric signal. The flow is shown. In the lower diagram, the amount of electricity supplied to the automatic closing device 7 corresponding to the upper diagram is shown, with the horizontal axis representing time and the vertical axis representing the electric supply amount. 6A, electricity is supplied from the interlock controller 9 only for a certain period of time. If an obstacle is detected and it takes time to close the shutter, the interlock controller 9 will be used when the obstacle is removed. Since no electricity is supplied from the shutter, the shutter cannot be closed without an interlocking relay. The embodiment 1 of the present invention shown in FIG. 6B is a continuous supply of electricity from the interlock controller 9, and even if an obstacle is detected and it takes time to close the shutter, the obstacle is not detected. Since the electricity is supplied from the interlocking controller 9 when it disappears, the closing of the shutter can be completed. In the second embodiment of the present invention shown in FIG. 6-C, in addition to the supply of electricity for a certain period of time in the prior art from the interlock controller 9 to the automatic closing device 7, continuous electricity is newly supplied from another terminal. Even if an obstacle is detected and it takes time to close the shutter, when the obstacle disappears, the newly added electricity is supplied from the interlocking controller 9, so that the closing of the shutter can be completed. it can.

  FIG. 7 is a perspective view schematically showing a shutter 30 including a capacitor and a capacitor charging device according to an embodiment of the present invention, and including a hazard prevention device using an interlock controller in the charging device. The shutter 30 is different from the shutter 1 of FIG. 1 in that it includes a capacitor box 31 that houses a capacitor between the interlock controller 9 and the automatic closing device 7. Normally, the interlock controller 9 does not supply electricity to the fire fighting equipment except at the time of a fire. However, even if it is not at the time of a fire, the interlock controller 9 is always or periodically connected to the automatic closing device 7 by a commercial power source or an emergency battery. Ensure that electricity is supplied.

  FIG. 8 is an electric circuit diagram of the harm prevention device for the shutter 30. The electric circuit of FIG. 8 includes a capacitor box 31 between the interlocking controller 9 and the automatic closing device 7, and the electric circuit of the shutter 1 danger prevention device described in FIG. Is different in that the interlocking controller 9 is connected to the automatic closing device 7 at the SD terminal.

  With this configuration, the capacitor is normally stored by supplying electricity from the interlock controller 9, and in the event of a fire, the capacitor box 31 receives an operation signal from the interlock controller 9, so that the stored capacitor continues to the automatic closing device 7. Electricity is supplied. Therefore, even if the automatic closing device 7 does not continuously receive electricity from the interlocking controller 9, it is possible to complete the closing of the shutter 30 while properly operating the hazard prevention device.

  FIG. 9 is a perspective view schematically showing a shutter 40 including a hazard prevention device using a solar system 41 as a capacitor charging device. The shutter 40 differs from the shutter 30 in FIG. 7 in that a solar system 41 is connected as a charging device for the capacitor box 31 instead of the interlock controller 9.

  FIG. 10 is an electric circuit diagram of the harm prevention device for the shutter 40. The electrical circuit of FIG. 10 differs from the electrical circuit of the hazard prevention device for the shutter 30 described in FIG. 8 in that a solar system 41 is connected to the SS terminal of the capacitor box 31.

  With this configuration, the capacitor is normally stored by the solar system 41, and in the event of a fire, electricity is continuously supplied to the automatic closing device 7 from the stored capacitor when the capacitor box 31 receives an operation signal from the interlock controller 9. Therefore, even if the automatic closing device 7 does not continuously receive electricity from the interlock controller, it is possible to complete the closing of the shutter 40 while properly operating the hazard prevention device. In addition, since the solar system 41 continuously supplies electricity if there is no disconnection or the like even in the event of a fire, the capacitor can store electricity while supplying electricity to the automatic closing device 7, so that stable electricity can be stored. Supply is possible.

  FIG. 11 is a perspective view schematically showing a shutter 50 including a hazard prevention device using a commercial power source 51 for the capacitor charging device. The shutter 50 is different from the shutter 40 of FIG. 9 in that a commercial power supply 51 is connected instead of the solar system 41 as a charging device for the capacitor box 31.

  FIG. 12 is an electric circuit diagram of the harm prevention device for the shutter 50. The electric circuit of FIG. 12 differs from the electric circuit of the hazard prevention device for the shutter 40 described in FIG. 10 in that a commercial power supply 51 is connected to the SS terminal of the capacitor box 31 instead of the solar system 41. ing.

  With this configuration, the capacitor is normally stored by the commercial power supply 51, and in the event of a fire, electricity is continuously supplied from the stored capacitor to the automatic closing device 7 when the capacitor box 31 receives an operation signal from the interlock controller 9. Therefore, even if the automatic closing device 7 does not continuously receive electricity from the interlocking controller 9, it is possible to complete the closing of the shutter 50 while properly operating the hazard prevention device. In addition, even if there is no power outage in the event of a fire, electricity is continuously supplied from the commercial power source 51, and the capacitor can store electricity while supplying electricity to the automatic closing device, so stable electricity supply is possible. It is.

Here, the interlock controller 9, the solar system 41, and the commercial power source 51 shown as the capacitor charging device can be used independently, but by combining them, a more stable power source can be secured. Further, the required charge amount Q [C coulomb] of the capacitor is obtained from current I [A ampere], time T [s seconds], capacitor capacitance C [F farad], and voltage V [V volt].
Q = I ・ T = C ・ V
Therefore, the capacitance C of the capacitor can be obtained from the operating current I of the automatic closing device, the operating time T of the automatic closing device, and the voltage V applied to the capacitor. Here, in the case of using a structure that returns to the braking state of the brake when the automatic closing device 7 is de-energized like the electromagnetic clutch 24, the operation of the automatic closing device 7 is maintained in order to continue the weight drop. Therefore, the operation time T of the automatic closing device 7 is increased, and the capacitance C of the capacitor is increased. Therefore, it is possible to reduce the electrostatic capacity C of the capacitor by using an automatic closing device 7 having a structure that switches between braking and releasing of the opening / closing motor by instantaneous electricity such as an electromagnetic solenoid. .

  In the above, the embodiment of the present invention has been described by taking a steel shutter as an example. However, the present invention is a non-combustible cloth shutter composed of the fireproof screen 61 and the seat plate switch 62 shown in FIG. 13 in which the shutter curtain is a non-combustible cloth. 60 is also applicable.

  While the present invention has been described in connection with embodiments that are presently the most practical and preferred, the present invention is not limited to the embodiments disclosed herein. However, the present invention can be changed as appropriate without departing from the spirit or concept of the invention that can be read from the claims and the entire specification, and the harm prevention apparatus and shutter accompanying such changes are also included in the technical scope of the present invention. Must be understood.

It is a perspective view of a shutter provided with the hazard prevention apparatus to which electricity is continuously supplied from the interlocking controller. It is an enlarged view of the connection part of the winding shaft of a shutter, and an electric switch. It is the enlarged view and sectional drawing of a seat-plate switch periphery part. It is the flowchart which showed the effect | action of the shutter provided with the hazard prevention apparatus which is supplied with electricity continuously from the interlocking controller. It is an electric circuit diagram of the hazard prevention device to which electricity is continuously supplied from the interlocking controller. It is the figure which showed typically the continuous supply of electricity from an interlocking controller. It is a perspective view of a shutter provided with the hazard prevention apparatus which provided the capacitor and the charging device of the capacitor and used the interlocking controller for the charging device. It is an electric circuit diagram of a hazard prevention device using an interlocking controller as a capacitor charging device. It is a perspective view of the shutter which used the solar system for the charging device of a capacitor | condenser. It is an electric circuit diagram of the harm prevention apparatus which uses the solar system for the charging device of a capacitor | condenser. It is a perspective view of the shutter which used the commercial power supply for the charging device of a capacitor | condenser. It is an electric circuit diagram of a harm prevention device using a commercial power source for a capacitor charging device. It is sectional drawing of the seat board switch peripheral part of a non-combustible cloth shutter. It is a perspective view of the conventional dead weight drop shutter. It is an electric circuit diagram of a conventional dead weight descent shutter.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Shutter 2 Shutter curtain 3 Guide rail 4 Bearing bracket 5 Winding shaft 6 Electric switch 7 Automatic closing device 8 Sensor 9 Interlocking controller 10 Seat plate switch 11 Reel 12 Lead wire 13 Sprocket 14 Sprocket 15 Chain 16 Seat plate 17 Touch Plate 21 Timer circuit 22 Switch 23 Brake release motor 24 Electromagnetic clutch 30 Shutter 31 equipped with a hazard prevention device using a linked controller in the capacitor charging device 31 Capacitor box 40 A hazard prevention device using a solar system for the capacitor charging device Provided shutter 41 Solar system 50 Shutter provided with a hazard prevention device using a commercial power source for the capacitor charging device 51 Commercial power source 60 Non-combustible cloth shutter 61 Fireproof screen 62 Plate switch 100 Shutter 101 Shutter curtain 102 Guide rail 103 Bearing bracket 104 Winding shaft 105 Opening and closing device 106 Automatic closing device 107 Sensor 108 Interlocking controller 109 Seat plate switch 110 Reel 111 Interlocking relay 112 Commercial power supply 121 Timer circuit 122 Switch 123 Brake release motor 124 Electromagnetic clutch

Claims (3)

The shutter that closes the opening by its own weight drop is provided with a direct operation signal and electricity supplied from the interlock controller that has received the fire signal of the sensor, and the shutter curtain of the shutter is lowered by its own weight. A harm prevention device characterized in that electricity is continuously supplied from the interlock controller. It is provided in a shutter that closes the opening due to its own weight drop, and receives the operation signal and electricity directly from the interlocking controller that has received the fire signal of the sensor to cause the shutter curtain of the shutter to drop its own weight. A harm prevention device comprising a charging device, wherein electricity is supplied from the capacitor during the weight drop. A shutter provided with the harm prevention apparatus of Claim 1 or 2.

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