JP2002168076A - Control device for shutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control device for a shutter, which minimizes power capacity of a control panel, a disaster prevention panel, etc., and effectively performs a function as a fire shutter and a fundamental function of detecting obstacles. SOLUTION: The control device is comprised of a DC solenoid 16, an AC solenoid 17, a first changeover switch MS1, and a second changeover switch MS2. The DC solenoid 16 releases a shutter brake 7. The AC solenoid 17 recovers the DC solenoid 16 which has releases the shutter brake 7 to a braking state in response to an obstacle detecting signal from a base board switch 8. The first changeover switch MS1 is connected in series to an abnormality sensing signal line X extending to the DC solenoid 16, and it is turned off when the DC solenoid 16 releases the shutter brake 7, whereas it is turned on upon recovery of the shutter brake. The second changeover switch MS2 is connected in series to an AC power supply line Y extending to the AC solenoid 17, and it is turned on upon starting of a self weight drop of a shutter curtain 2a, whereas it is turned off when the self weight drop is stopped. Further, the control device is comprised of an emergency control section 13 by a control relay RY which connects a normally closed contact point RY1 to the first changeover switch MS1 in series, and connects a normally opened contact point RY2 to the second changeover switch MS2 in series.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a doorway of a building,
The present invention relates to a control device for a shutter built in a passage or the like and set to lower a shutter curtain by its own weight based on release of a brake in conjunction with an abnormality detection signal from a detector such as a fire detector or a smoke detector.

[0002]

2. Description of the Related Art Generally, fireproof shutters installed at entrances, passageways, etc. of buildings perform opening and closing operations based on the drive of an electric switch, and in the event of a fire or the like, sensing is performed in an emergency. It is configured to release the brake based on the abnormality detection signal from the vessel, lower the shutter curtain by its own weight and close the entrance and exit, the passage to stop the spread of fire, but based on the abnormality detection signal of fire etc. In order to lower the shutter curtain by its own weight, an abnormality detection signal (generally DC24) is required to keep the brake released regardless of the power failure and non-power failure.
V) must be continuously output, and therefore, the power capacity of the control panel (disaster prevention panel) must be set sufficiently large.

In order to solve the above-mentioned increase in power capacity, the present applicant employs a single relay as a technique required for continuous output of an abnormality detection signal, thereby reducing the self-weight drop to reduce the increase in power capacity. Type electric shutter was proposed (JP-A-2000-8748).

However, the above-mentioned proposal is specialized in application to an electric shutter employing an electric switch driven by an AC power supply. This leaves room for improvement in that it cannot be adopted.

[0005] On the other hand, regardless of whether a fireproof shutter or a general shutter is used, if an obstacle is detected during the closing operation of the shutter curtain, the closing operation of the shutter curtain is urgently stopped to remove the obstacle. It is also important to increase the safety so that it is not trapped in the space.

[0006]

SUMMARY OF THE INVENTION In view of the above-mentioned circumstances, the present invention is directed to a research and development for pursuing improvement in function and safety as a fireproof shutter irrespective of the difference in the basic configuration between an electric shutter and a manual shutter. It was created in the process, and its purpose is to configure the control unit that can be commonly used for both the electric shutter and the manual shutter to reduce the power capacity of the control panel or disaster prevention panel etc. An object of the present invention is to provide a control device for a shutter capable of effectively and effectively functioning as a fire shutter and a basic function of obstacle detection while keeping it to a minimum.

[0007]

Means for Solving the Problems In order to solve the problems, the technical means adopted by the present invention is a self-holding type DC solenoid which receives a DC power forming an abnormality detection signal and releases a shutter brake, and a shutter brake. DC released
The solenoid is connected in series to an AC solenoid that receives the obstacle detection signal from the seat switch and returns to the brake state, and is connected in series to the abnormality detection signal line to the DC solenoid, and turns off when the DC solenoid releases the shutter brake. And the first changeover switch which is turned on when the shutter brake returns, and the A switch to the AC solenoid
A second switch which is connected in series to the C power supply line, is turned on when the shutter curtain starts its own descent, and is turned off when the self descent is stopped, and has a normally closed contact as the first switch, An emergency control unit is formed by interlocking a control relay in which a normally open contact is serially connected to the changeover switch 2 with the seat plate switch. When the AC power is supplied, the self-weight drop of the shutter curtain based on the abnormality detection signal and an obstacle are caused. It is characterized in that an obstacle is detected based on an object detection signal, and when the AC power is not supplied, only the self-weight drop of the shutter curtain based on the abnormality detection signal is performed.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to one embodiment shown in the drawings. In FIG. 1, reference numeral 1 denotes an electric shutter built at an opening such as a passage, an entrance, or the like, and a shutter curtain 2 constituting the electric shutter 1 is wound around a winding drum 2a and stands on the left and right sides of the opening. The opening / closing section is opened and closed by being guided by guide rails 3 provided, and an electric switch 4 provided near the winding drum 2a is provided with a speed reducer. A motor 5, a speed governor 6 for controlling the speed when the shutter curtain 2 descends by its own weight, and a shutter brake 7 for stopping the shutter curtain 2 from descending its own weight are provided therein. A seat plate switch 8 is provided for detecting when there is an object.

Reference numeral 9 denotes an opening / closing control unit (control panel) for controlling the operation of the electric switchgear 4. The opening / closing control unit 9 includes a switch box 10 having opening, stopping, and closing operation switches. The main control unit 11 controls the basic operation of the electric switchgear 4 in response to a control signal from the controller, and the obstacle detection control unit 12 operates in response to an obstacle detection signal from the seat plate switch 8. Further, an emergency control unit 13 to be described later and an interlocking control unit 15 externally connected to a smoke detector 14 for detecting smoke generated in an emergency such as a fire, and a battery 15a built in the interlocking control unit 15 By AC
Even in the event of a power outage when power supply is cut off, the electric switch 4 is controlled by the emergency control unit 13 in response to the sensing operation of the smoke detector 14.
It can be done via.

Here, as shown in FIG. 2, the emergency control unit 13 includes an interlock control unit 15 (15a) for generating an abnormality detection signal.
The self-holding type DC solenoid 16 that releases the shutter brake 7 by receiving the DC power from the DC power source and the DC solenoid 16 that releases the shutter brake 7 are brought into the brake state by receiving the obstacle detection signal from the seat plate switch 8. The AC solenoid 17 to be restored and the DC solenoid 1
6, a first changeover switch MS1 that is connected in series to the abnormality detection signal line X to the DC solenoid 6, and turns off when the DC solenoid 16 releases the shutter brake 7, and turns on when the shutter brake 7 returns. A second switch MS2 that is connected in series to an AC power supply line Y to the AC solenoid 17 and that is turned on when the shutter curtain 2 starts falling by its own weight, and turned off when the shutter curtain 2 stops falling, and the first changeover switch MS2 A normally closed contact RY1 is connected in series to MS1 and a second changeover switch MS2
An emergency control unit 13 is configured by connecting a control relay RY formed by connecting a normally open contact RY2 in series to the seat plate switch 8 via a delay control circuit 18.

When the electric shutter 1 can be normally opened and closed by operating the switch box 10,
That is, when the electric shutter 1 is driven by the supply of AC power, the shutter curtain 2a is caused to drop its own weight based on the abnormality detection signal (24 VDC) sent out by the smoke detector 14 detecting the smoke. In the meantime, when the seat panel switch 8 detects an obstacle, the self-weight drop of the shutter curtain 2a is stopped by the obstacle detection based on the obstacle detection signal to be sent from now on.

Reference numeral 19 denotes a switching contact incorporated in the main control unit 11 for sending a stop output to the electric switch 4 when the electric shutter 1 is fully closed. Reference numeral 20 denotes a delay control circuit connected to the AC power supply line Y. The power supply circuit supplies DC power to the power supply 18. R1 is a relay for switching the destination of the contact information from the seat switch 8 to the main control unit 11 and the emergency control unit 13. The self-holding contacts R1a and R1b are always connected to the main control unit 11 side. When an abnormality detection signal (24 V DC) is transmitted to the abnormality detection signal line X to the DC solenoid 16 in the smoke detection of the smoke detector 14, the relay R 1 receiving the DC power is connected to the contact from the seat plate switch 8. The information is switched and transmitted to the emergency control unit 13 side.

Since the present invention is constructed as described above,
When driving the electric shutter 1 by supplying AC power,
When the switch box 10 is operated, the electric shutter 1 is opened and closed. When the seat plate switch 8 detects an obstacle during the closing operation of the electric shutter 1, an obstacle detection signal is sent to the obstacle detection control unit 12. Through the main control unit 11
To stop the motor 5 of the electric switch 4 and control the brake drive of the shutter brake 7 to stop the lowering of the shutter curtain 2 during the closing operation.

In such a normal opening and closing control of the electric shutter 1, for example, when the smoke detector 14 detects smoke due to a fire or the like when the shutter curtain 2 is fully opened, the interlocking control is performed. Abnormality detection signal (24 VDC) input to the emergency control unit 13 via the unit 15
Is sent to the abnormality detection signal line X to the DC solenoid 16 and the DC solenoid 16
Is held in the released state, the shutter curtain 2 starts to fall under its own weight, and the relay R1 is connected to the seat switch 8 by the DC power of the abnormality detection signal sent to the abnormality detection signal line X.
Is switched to the emergency control unit 13 side. At this time, the first changeover switch MS1 is turned off, and the second changeover switch M
S2 is turned on, and the normally closed contacts RY1 and RY2 remain as they are (FIG. 3).
(A)).

When the seat plate switch 8 detects an obstacle during the fall of the weight of the shutter curtain 2a and turns on, an obstacle detection signal is sent to the delay control circuit 18 and the control relay RY is activated. The normally closed contact RY1 is turned off and the normally opened contact RY2 is turned on (FIG. 3B), and the normally open contact RY in the on state is turned on.
The AC solenoid 17 to which AC power has been supplied via the second and second changeover switches MS2 causes the DC solenoid 16 to return, the shutter brake 7 to be in the braking state again, and the self-weight drop of the shutter curtain 2a is stopped. Immediately after the self-weight drop of the shutter curtain 2a stops, the first changeover switch MS1 is turned on and the second changeover switch MS2 is turned off (FIG. 3).
(C)).

When the obstacle is removed while the shutter curtain 2a is stopped by the above-described obstacle detection, the seat plate switch 8 returns to the off state and the contact information is sent to the delay control circuit 18. However, after the preceding control state in the delay control circuit 18, that is, the control state in which the normally closed contact RY1 of the control relay RY is off and the normally open contact RY2 is on for a certain period of time (10 seconds in the embodiment), As shown in FIG. 3 (d), the normally closed contact RY1 is turned on and the normally open contact RY2 is turned off, and the abnormality sensing signal (24 VDC) input to the abnormality sensing signal line X to the DC solenoid 16 again. By
The DC solenoid 16 is driven to hold the shutter brake 7 in the released state, and the shutter curtain 2 is driven.
The self-weight descent of a will be resumed.

In the case of an emergency involving the occurrence of a fire or the like as described above, if AC power is not supplied (power failure), obstacle detection by the seat panel switch 8 is not performed, but the smoke detector The operation of releasing the shutter brake 7 of the DC solenoid 16 interlocked with the smoke detection 14 is maintained, and the doorway and passage are closed by the descent of the shutter curtain 2 to prevent the spread of fire.

FIGS. 5 and 6 show a case where the emergency control unit 13 constituting the opening / closing control unit 9 of the above embodiment is applied to a manual shutter with the same configuration as it is. In this configuration, the seat plate switch 8 shown in the above embodiment is used.
Is directly connected to the delay control circuit 18 of the emergency control unit 13 without switching the relay R1, and can perform the same obstacle detection operation and abnormality detection operation as described above.

The AC power supplied to the AC power supply line Y having the above configuration is used only for the obstacle detection operation, and is used when the DC solenoid 16 which is linked to the smoke detection of the smoke detector 14 releases the shutter brake (not shown). The point that the entrance and the entrance and the passage are closed by the self-weight drop of the shutter curtain to prevent the spread of fire by the fire is the same as the control configuration in the electric shutter 1, and therefore, the common use of the emergency control unit 13 as the hardware is electrically controlled. Since the shutter and the manual shutter are used, the manufacturing cost can be reduced, the control configuration can be simplified, and the unit can be easily formed.

In each embodiment, as the obstacle detecting means, the configuration in which the seat plate switch 8 is turned on and off is shown. However, the present invention is not limited to this, and other obstacle detecting means, for example, the shutter curtain 2a may be moved forward and backward. Various types of commonly known switches such as a photoelectric switch provided therebetween and a proximity switch for detecting that an obstacle has approached can be employed.

In short, the present invention provides a self-holding type DC solenoid that releases a shutter brake by receiving DC power forming an abnormality detection signal, and a DC solenoid that releases a shutter brake by using an obstacle from a seat plate switch. An AC solenoid that receives an object detection signal and returns to a brake state is connected in series to an abnormality detection signal line to the DC solenoid, and the DC solenoid turns off when the shutter brake is released, and returns when the shutter brake returns. A first changeover switch that is turned on, and a second changeover switch that is connected in series to the AC power supply line to the AC solenoid and that is turned on when the self-weight drop of the shutter curtain starts and turned off when the self-weight drop stops. A normally closed contact to the first changeover switch and a normally open contact to the second changeover switch. Are connected in series with a seat plate switch to form an emergency control unit. When the AC power is supplied, the self-weight drop of the shutter curtain based on the abnormality detection signal and the obstacle detection based on the obstacle detection signal are detected. And when the AC power is not supplied, only the self-weight drop of the shutter curtain based on the abnormality detection signal is performed, and the emergency control unit controls the opening and closing of the shutter curtain by the electric switch. Since the shutter and the manual shutter that opens and closes the shutter curtain without using an electric switch can be shared, a control unit that can be commonly used for both the electric shutter and the manual shutter is provided. With this configuration, the power capacity of the control panel or disaster prevention panel can be kept to a minimum while the The function and basic functions of obstacle detection may be effectively and efficiently function, in which exhibits extremely useful novel effects that.

[Brief description of the drawings]

FIG. 1 is a front view of an electric shutter and a block diagram of a control device connected thereto.

FIG. 2 is a circuit diagram showing a connection between an emergency control unit and its periphery.

FIGS. 3A to 3D are circuit diagrams illustrating a control change when an obstacle is detected.

FIG. 4 is a flowchart illustrating control of an emergency control unit when a fire occurs.

FIG. 5 is a circuit diagram showing a connection between an emergency control unit and its periphery in a manual shutter.

FIG. 6 is a flowchart illustrating control of an emergency control unit when a fire occurs in a manual shutter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric shutter 2a Shutter curtain 4 Electric switch 7 Shutter brake 8 Seat switch 13 Emergency control unit 16 DC solenoid 17 AC solenoid X Abnormality detection signal line Y AC power supply line MS1 First switch MS2 Second switch RY Control relay RY1 normally closed contact RY2 normally open contact

Claims (2)

[Claims] 1. A self-holding type DC solenoid that releases a shutter brake by receiving DC power forming an abnormality detection signal and a DC solenoid that releases the shutter brake by braking an obstacle detection signal from a seat plate switch. A first solenoid which is connected in series to an AC solenoid for returning to a state and an abnormality detection signal line to the DC solenoid, and which is turned off when the DC solenoid releases a shutter brake and turned on when the shutter brake returns.
And a second switch that is connected in series to the AC power supply line to the AC solenoid, is turned on when the shutter curtain starts its own weight descent, and is turned off when the self-weight descent is stopped. An emergency control unit is formed by linking a normally closed contact to a changeover switch and a normally open contact to a second changeover switch in series with a seat plate switch to form an emergency control unit. The shutter curtain self-weight drop based on the traffic signal and obstacle detection based on the obstacle detection signal, and A
C. A control device for a shutter, wherein only a self-weight drop of a shutter curtain based on an abnormality detection signal is performed when no power is supplied. 2. The emergency control unit can be shared by an electric shutter that opens and closes a shutter curtain by an electric switch and a manual shutter that opens and closes the shutter curtain without using an electric switch. The control device for a shutter according to claim 1, further comprising: