JPH09217569A - Brake release device for self-closing shutter - Google Patents

Abstract

(57) [SUMMARY] [PROBLEMS] In a self-weight closing type shutter device, it is detected whether or not a start signal input to the brake release device to open the brake in the event of a fire has reached a predetermined voltage. So that we can inform you. SOLUTION: The voltage detection notifying means 2 is provided in the vicinity of the wiring of the solenoid 13a of the circuit constituting the brake release device 8.
A brake release device for a self-weight closing shutter, in which 0s are connected in parallel and the notification light 21 of the voltage detection notification means 20 is turned on when the activation signal from the interlocking control unit 15 does not reach the predetermined voltage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technical field of a brake releasing device for a self-weight closing shutter such as a fireproof and smokeproof shutter which is built in an opening or a partition of a building.

[0002]

2. Description of the Related Art Generally, an opening such as a doorway of a building is provided with a self-weight closing shutter in which a shutter curtain is closed by its own weight based on fire detection (temperature detection, smoke detection, etc.) to prevent the spread of fire. There is something like this. In this structure, the brake is released and the shutter curtain is closed by its own weight based on the detection of the fire. However, in this case, it is necessary to consider a power failure, and therefore, the brake releasing means at the time of the fire does not use the power source supplied to the switch side to open and close the shutter curtain, but the power source from its own battery power source. It is preferable to be configured so as to be operated by receiving supply, and therefore, an interlocking controller which separately outputs a brake release start signal based on input of a fire detection signal is provided separately.

[0003]

By the way, when the brake is released based on such a fire detection, the connection cable (wiring) from the interlocking controller to the brake releasing means may become long. In some cases, the resistance of the cable itself causes a voltage drop in the start signal for releasing the brake, and even if the battery power source of the interlocking controller is at a predetermined voltage (for example, 24 V), the start signal is input to the brake releasing means. It is conceivable that the voltage of the signal becomes lower than the voltage required for the brake release operation (for example, the range of 24 to 18 V), and in this case, the brake release at the time of fire becomes inoperative. Therefore, it is necessary to confirm that such a situation does not occur, but in that case, conventionally, it is close to the brake release means to confirm whether or not the voltage of the activation signal supplied from the interlocking controller has reached a predetermined voltage. There is a problem that maintenance work is inferior because the troublesome work of temporarily connecting a separately prepared voltmeter to the position wiring and checking is forced, and there is a problem to be solved by the present invention. there were.

[0004]

The present invention has been made in view of the above circumstances in order to solve these problems, and is based on a start signal from an interlocking controller associated with fire detection. In the self-weight closing type shutter in which the shutter curtain is closed by its own weight by the operation of the brake releasing means, the voltage detection notifying means for detecting whether the activation signal input to the brake releasing means has reached a predetermined voltage and notifying the result is It is provided. As a result, whether or not the activation signal input to the brake releasing means from the interlocking controller has reached a predetermined voltage is notified, and it is possible to improve the maintainability. In this one,
The voltage detection / informing means of the present invention can also notify based on the detection that the activation signal has not reached the predetermined voltage.

[0005]

FIG. 1 shows an embodiment of the present invention.
This will be described with reference to FIG. In the drawings, reference numeral 1 denotes an electric fireproof and smokeproof shutter device installed in an opening, and a shutter curtain 2 constituting the shutter device 1 includes guide rails 3 whose both edges are provided on both sides of the opening. In the state of being guided up and down, the posture is changed to a closed posture in which the opening is closed and a storage posture in which the winding shaft 5 supported by the shutter case 4 above the opening is wound. It is configured and each of them has a conventional configuration.

An opening / closing machine 6 having a braking device (brake means) 6a is provided on one side of the shutter case 4, and an output shaft 6b of the opening / closing machine 6 is interlockingly connected to the winding shaft 5. The switch 6 is connected to the power source on the body side, and when an opening / closing control command is issued by pressing the push button switch 7 or the like, the brake device 6a is released and the switch 6 is driven forward / reversely. Is set so that the winding shaft 5 rotates in the forward and reverse directions to move the shutter curtain 2 up and down. Further, the shutter curtain 2 is set to a self-weight closing type in which even when the opening / closing device 6 is not driven, as will be described later, when the brake device 6a is released in the stored posture, the self-weight is lowered and closed.

A brake releasing device (brake releasing means of the present invention) 8 is provided at the lower part of the switch 6 so that the brake device 6a is released in the event of a fire. That is, the casing 9 constituting the brake release device 8 is provided adjacent to the opening / closing device 6, and the brake lever 10 projects through the casing 9 from the opening / closing device 6 side in a penetrating manner. By the way, the brake lever 10 is set so as to release the brake device 6a by pushing the protruding tip portion in the casing 9 in the left-right direction (in the present embodiment, the right direction in FIG. 2). The casing 9 is provided with a pair of left and right brackets 9a, and the release rod 11 is supported so as to be movable in the left-right direction in a state of facing the front end of the protruding portion of the brake lever 10. When the brake lever 11 is urged toward the protruding tip end side of the brake lever 11 and is moved to the protruding tip end side by receiving the urging force, the release rod 11 moves to the brake release position for pushing the brake lever 10 to the right. Is set to.

On the other hand, 13 is a lock body constructed by extending a movable iron core of the solenoid 13a.
3 is provided on the casing 9 side in a state of facing the outer peripheral surface of the release rod 11, but the lock body 13 projects in a normal state in which the solenoid 13a is not energized, and in this state, it resists the ammunition 12. The release rod 11 positioned in the non-released posture is locked in the groove 11a formed on the outer peripheral surface thereof, thereby locking the release rod 11 in the non-released posture position.

Reference numeral 15 denotes an interlocking controller connected to the brake releasing device 8. The interlocking controller 15 is independently provided without being powered by a power source on the body side for driving the switch 6. Power is supplied from the battery power source 16, and in the embodiment of the present invention, the brake releasing device is provided in a central control management room or the like that is remote from the place where the shutter device 1 is provided. 8 is connected via a cable 17. The interlocking controller 15 is connected to a fire detecting means such as a heat detector 18 or a smoke detector 19 provided at an appropriate place in the building,
When a fire detection signal based on the detection of an abnormality by any one of these fire detection means is input, an activation signal is output to the brake release device 8 so that the solenoid 13a is energized. There is. When the solenoid 13a is energized, the lock body 13 retracts to release the engagement with the release rod 11, and the release rod 11 is brought into the brake release posture by the urging force of the ammunition 12. The brake lever 6 is pushed rightward to release the brake device 6a.
Reference numeral 14 is a micro switch for switching the switch based on the release rod 11 being in the brake releasing posture. When the micro switch 14 is switched, the solenoid 13a is de-energized. Has been done. Further, on the side surface of the casing 9, there is provided a notification light 21 which is connected to the brake release device 8 and constitutes the voltage detection notification means 20 of the present invention.
It is set to notify by lighting whether or not the activation signal supplied to a has reached a predetermined voltage sufficient for retracting the lock body 13.

Next, a control circuit diagram showing a control state of the brake release device 8 by the interlocking controller 15 will be described with reference to FIG. The interlocking controller 15 is connected to a switch S that is closed by receiving a detection signal from each fire detection means to the battery power source 16, and the circuit of the brake release device 8 side is connected to this. In the circuit of the brake release device 8 side, the micro switch 14 and the solenoid 13a are connected in series with the switch S in the previous period, and in the vicinity of the solenoid 13a beyond the micro switch 14 and in parallel with the solenoid 13a. The voltage detection notification means 20 is connected in this state. This voltage detection notification means 2
0 indicates that the output terminal 20a is detected when a voltage smaller than a preset voltage (for example, 18) is applied.
The output of the notification lamp 21 connected to the wiring from the output terminal 20a is set to light upon receiving this output.

Here, the voltage detection / informing means 20 in the present embodiment is set by the circuit shown in FIG. That is,
The voltage detection / informing means 20 is connected in parallel to the cable 17 and outputs a Zener voltage when a predetermined voltage (normal voltage, for example, in a range of 18 to 24 V) is applied, and a Zener of the Zener diode Dz. The voltage is input as a base voltage via the resistor R1, the first transistor switch Tr1, the resistor R2,
A second transistor switch Tr2 to which a voltage is applied via R3, and a light emitting diode LED that emits light when the second transistor switch Tr2 is turned on.
It is configured by using the (notification light 21). And
If the start signal is lower than the normal voltage,
The Zener voltage is not applied from the Zener diode Dz to the first transistor switch Tr1 as a base current, and the switch is turned off. In this state, the voltage passing through the resistor R2 passes through the resistor R3 and the second transistor. A base current is applied to the switch Tr2 side, whereby the second transistor switch Tr2 is turned on and the light emitting diode LED is set to emit light. On the other hand, when the normal voltage is applied, the Zener voltage from the Zener diode Dz is applied as the base current to the first transistor switch Tr1, and based on this, the first transistor switch Tr1 is turned off.
Then, the N state is set, and the circuit passing through the resistor R2 is grounded through the turned-on first transistor switch Tr1 so that the voltage supply to the resistor R3 side is lost, and thus the second transistor switch Tr2 is turned off. The base current is not applied to Tr2 and the transistor is switched to the OFF state, and accordingly, the voltage is not supplied to the light emitting diode LED, and the light emitting diode LED does not emit light. Thus, the setting is such that it can be recognized whether or not the activation signal applied near the voltage detection / informing means 20 has reached a predetermined voltage.

In the embodiment of the present invention configured as described above, when a fire such as a fire is detected and the fire detection signal is input to the interlocking controller 15, the interlocking controller 15 outputs a start signal, The brake release device 8 which has received the activation signal releases the brake device 6a by setting the release rod 11 in the brake release posture, whereby the shutter curtain 2 is closed by its own weight, which contributes to the prevention of fire burning and fire spread.

As described above, in the embodiment of the present invention, the shutter curtain 2 is closed by its own weight following the input of the fire detection signal. However, during maintenance or installation, the interlocking controller 15 normally operates. It may be required to check whether or not a start signal having a voltage in a different range is applied in the vicinity of the brake release device 8. In such a case, a pseudo fire detection signal is output or a fire occurs. It is only necessary to artificially operate the switch S that is closed by the input of the detection signal to output a start signal, and in response to this output, it is possible to confirm whether or not the indicator lamp 21 is turned on. Unlike the conventional case, the troublesome work of temporarily connecting the voltmeter and checking whether or not the voltage has reached the predetermined voltage is not required, and the maintainability is improved.

Moreover, in this device, the voltage detection notifying means 2
Since 0 is connected in parallel in the vicinity of the solenoid 13a beyond the micro switch 14, when the release rod 11 is actuated to switch the micro switch 14 to OFF, the solenoid 13a and the voltage detection notifying means 20 are connected. The energization is also cut off, so that even if the switch S is kept in the ON state for a long time for maintenance or the like, the solenoid 13a is actuated to cut off the energization to the solenoid 13a. The power supply to the voltage detection notifying means 20 is also cut off, so that wasteful consumption of the battery power supply 16 can be suppressed.

Further, in the present embodiment, the light emitting diode LED emits light when the activation signal is equal to or lower than the predetermined voltage. Therefore, as described above, the pseudo abnormal signal or the like is output. When the output voltage of the accompanying start signal is within the normal range, the light emitting diode LED does not light up, but lights up only when there is an abnormality. There is no. Further, in this device, since the illuminance of the light emitting diode LED changes depending on the applied voltage, the voltage of the brake release command at the time of abnormality can be estimated to some extent by the brightness thereof, which is more convenient. In addition, in this device, when the light-emitting diode LED is turned on as described above when the start signal is artificially output, a failure diagnosis of the electric system is performed, but it is not turned on and the solenoid 13a does not operate. In this case, either the disconnection diagnosis of the circuit or the failure diagnosis of the mechanical system on the shutter side can promptly respond to the failure recovery.

The present invention is not limited to the above-mentioned embodiment, and the notification means may be, for example, blinking of notification or voice notification of buzzer instead of lighting of the notification lamp. In addition, the voltage detection notification means is the same as in the second embodiment shown in FIG.
4 and the solenoid 13a may be connected in parallel, but in this configuration, the voltage detection notifying means 20 is energized while the switch S is ON regardless of whether or not the solenoid 13a is operated. It will be.

Further, in the notification means by the notification light,
It may be configured to turn on when the start signal reaches the normal voltage and turn off when the start signal does not reach the normal voltage. As a circuit in such a case, as in the third embodiment shown in FIG. , A Zener diode Dz connected in parallel to the cable 17, and a light emitting diode L connected via a resistor R2.
An ED and a transistor Tr to which the Zener voltage of the Zener diode Dz is input as a base voltage via a resistor R1 can be configured. In this device, the Zener voltage is not output when the activation signal does not exceed the predetermined voltage. Therefore, the transistor switch T
r is to be kept OFF, and the light emitting diode L
Although the ED does not emit light, when the predetermined voltage is exceeded, the output Zener voltage is applied to the transistor switch Tr, the transistor switch Tr is turned on, and the light emitting diode LED emits light. Therefore, even in this case, it is possible to check whether or not the activation signal has reached various constant voltages. In this embodiment, when a failure is diagnosed at the time of inspection or the like, and the shutter curtain 2 does not drop by its own weight even though the start signal is at a normal voltage, the shutter of the brake release device 8 or the like is released. When the failure diagnosis of the mechanical system that the device 1 side is broken can be performed and it is determined that the start signal is not the normal voltage (lower than the predetermined voltage), the fire detection means including the circuit disconnection, the interlocking controller 15, etc. It is possible to perform a failure diagnosis of the electrical system, which is a failure of the electrical part of, and to take appropriate measures for failure recovery quickly.

[Brief description of drawings]

FIG. 1 is a schematic explanatory diagram of a shutter device.

FIG. 2 is an explanatory front view of a main part.

FIG. 3 is a circuit diagram showing a control state of a brake release device by an interlocking controller.

FIG. 4 is a circuit diagram of voltage detection notification means.

FIG. 5 is a circuit diagram showing a control state of a brake release device by an interlocking controller in the second embodiment.

FIG. 6 is a circuit diagram of a voltage detection / informing means according to a third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shutter device 2 Shutter curtain 6 Opener 6a Brake device 8 Brake release device 11 Release rod 13 Lock body 13a Solenoid 14 Micro switch 15 Interlocking controller 16 Battery power supply 17 Cable 20 Voltage detection notification means 21 Warning light Dz Zener diode

Claims (2)

[Claims] 1. A self-weight closing shutter in which the shutter curtain is closed by its own weight by the operation of a brake releasing means based on a start signal from an interlocking controller associated with a fire detection,
A brake release device for a dead-weight shutter that is provided with voltage detection notification means for detecting whether or not a start signal input to the brake release means has reached a predetermined voltage and notifying the result. 2. The brake release device for a self-weight closing shutter according to claim 1, wherein the voltage detection notifying means notifies the start signal based on a detection that the activation signal has not reached a predetermined voltage.