JPH05280272A - Automatic closing device for balance type motor-driven shutter - Google Patents

Abstract

PURPOSE:To automatically close a shutter curtain when generation of a fire and the like, is sensed in a balance type motor-driven shutter constituted so that the energization force of a balancing spring and the dead weight of a delivered shutter curtain are balanced with each other. CONSTITUTION:An abnormality sensing device 14 provided with a relay switch RX is connected to an opening/closing control part 9 to output a control command to an opening/closing device 7, and the relay switch contacts RX1, RX2 of the relay switch RX are arranged. The relay switch contacts RX1, RX2 are changed to open or close based on the signal from the abnormality sensing device 14, and hence automatic closing can be performed, even if a shutter is operated in any operating condition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic closing device for a balance type electric shutter installed in an opening of a building or the like.

[0002]

BACKGROUND OF THE INVENTION Generally,
In an electric shutter built in a building, etc., when an abnormal situation such as a fire occurs, the shutter curtain should be automatically closed based on the signal from the abnormality detector to detect the spread of fire. Some are equipped with configured safety devices. However, conventionally, in the safety device in which the shutter curtain drops by its own weight, the brake is released based on a signal input from a sensor, and the shutter curtain is automatically closed by its own weight drop. For this reason, a winding wheel is rotatably supported on a support shaft fixed to the skeleton side, and an ammunition is interposed between the support shaft and the winding wheel. In the balance type electric shutter which is set so that the energy stored by the ammunition that is stored based on the rotation of the Since there is no self-weight lowering function of the shutter curtain, the conventional safety device cannot be adopted as it is, and if it is attempted to add the safety described above, it is purposely heavy weight and expensive self-weight lowering. There is a problem that it has to be a formula shutter.

[0003]

SUMMARY OF THE INVENTION The present invention was devised with the object of providing an automatic closing device for a balance type electric shutter which can eliminate these drawbacks in view of the above circumstances. , Between the support shaft fixed to the body side and the winding wheel rotatably supported by the support shaft, the power is accumulated based on the rotation of the winding wheel in the direction of feeding the shutter curtain. A balance type electric shutter in which the stored force is set so as to substantially correspond to the change in the weight of the shutter curtain fed from the winding wheel, and the winding wheel is rotated by the forward and reverse driving of the switch. In, open to the switch,
An abnormality detector that senses the occurrence of an abnormal situation such as a fire is connected to the opening / closing control mechanism that outputs a stop / close control command, while the opening / closing control mechanism is based on the input of the detection signal from the abnormality detector. A closing command priority means for outputting the closing control command in preference to other control commands and automatically closing it is provided.

According to the present invention, according to this structure, in the balance type electric shutter, the automatic closing of the shutter curtain based on the abnormality detection is performed prior to other control commands.

[0005]

An embodiment of the present invention will be described below with reference to the drawings. In the drawings, reference numeral 1 is a balance type electric shutter shutter curtain, in which the winding wheel 3 rotatably supported on a support shaft 2 fixed to the body side is rotated in the forward and reverse directions. Winding up by doing
It is unwound and guided by guide rails 4 provided on both sides of the body to move up and down the opening to open and close. An ammunition machine 5 is interposed between the support shaft 2 and the winding wheel 3, and the accumulating force of the ammunition machine 5 causes the winding wheel 3 to rotate in the feeding direction of the shutter curtain 1. The energy is stored on the basis of the energy stored in the winding wheel 3. The energy is set so as to substantially correspond to the change in the weight of the shutter curtain 1 fed from the winding wheel 3, and the winding wheel 3 is electrically driven. It is configured as a balance type electric shutter that is rotated by forward and reverse driving of a switch 7 composed of a motor 6 and the like, and opens, closes, and stops a switching operation switch 8 provided around the opening. As a result, the shutter operation is performed, and each of these has a conventional configuration.

Reference numeral 9 denotes an opening / closing control mechanism for outputting a control command for opening, stopping, and closing to the switching device 7. The opening / closing control mechanism 9 has the switching device 7 as shown in the control circuit diagram of FIG.
Which is connected to the DC electric motor 6 constituting the above, and which transforms the AC power supply (AC power supply) 10 into two kinds of necessary AC currents, and one of the transformed AC currents. A rectifier 12 that rectifies a direct current is provided. Here, although a DC motor is used in this embodiment, it goes without saying that an AC motor can be adopted. Then, the rectified direct current is supplied to the electric motor 6 in principle to open and close the shutter curtain 1 as described later, but this power supply circuit is provided with a power failure detection relay switch RA. ing. The switch contact RA of this relay switch RA is wired so as to select the power supply circuit from the battery (which is adapted to be charged by the transformed power supply) 13 and the power supply circuit for detecting a power failure. When the DC power from the rectifier 12 is applied to the relay switch RA, the relay switch RA is excited, and the switch contact RA is switched so that the power from the rectifier 12 side is applied to the electric motor 6 side. In addition, when the DC power from the rectifier 12 is not applied due to the power failure and the demagnetization state is achieved, the power from the battery 13 is applied to the electric motor side.

On the other hand, the open / close control mechanism 9 includes an open / close stop switching operation switch 8 operated by an operator, an open relay switch and its switch contact RU, a close relay switch and its switch contact RD, and an upper limit limit switch LS.
U, the lower limit limit switch LSD is provided, and further, fire detector, smoke detector, heat detector, sound detector, odor detector, gas detector, wind detector, rain detector, illuminance detector An abnormality detecting relay switch RX and its first and second switch contacts RX1 and RX2, which are switched based on the input of a detection signal from the abnormality detector 14 such as the above, are provided. The abnormality detecting relay switch RX is set so that the first switch contact RX1 is opened and the second switch contact RX2 is closed in a normal state without an abnormality detection signal. Therefore, the switch contacts RX1 and RX2 are switched between closed and open.

Next, the circuit will be described for a normal state in which no abnormality detection signal is input. When the shutter curtain 1 is open, as shown in FIG. 4, when the switching operation switch 8 is at the stop position, the switch contact RD of the closing relay switch RD is connected to the terminal RD2, and the opening relay switch RU is connected. The switch contact RU is connected to the terminal RU2, and the electric motor 6 is in a stopped state in which power is not applied. From this stop state, as shown in FIG. 2, when the switching operation switch 8 is switched to the closing side, the DC power source from the rectifier 12 or the battery 13 causes the terminal D +, the terminal W, the closing terminal SD of the switching operation switch 8 and the closing operation. Relay switch RD, lower limit limit switch LSD, and terminal X to flow to terminal D-, whereby the switch contact RD of the closing relay switch RD is switched to the terminal RD1 side. Then, until the shutter curtain 1 is lowered to the lower limit and the closing limit switch LSD is opened, the DC power source supplies the terminal W, the terminal Y, and the terminal RD of the switch contact RD.
1, the electric motor 6, the terminal RU2 of the switch contact RU, and the terminal Z to flow to the terminal X, whereby the electric motor 6 performs the closing operation of the shutter curtain 1. On the other hand, when the shutter curtain 1 is closed and the switching operation switch 8 is switched to the open side as shown in FIG. 3, the rectifier 12 or the DC power source from the battery 13 causes the terminals D +, W and the switching operation switch 8 to operate. Open terminal SU, second switch contact RX2, opening relay switch RU, upper limit limit switch LSU, and terminal X through the terminal D-, whereby the switch relay RU of the opening relay switch RU comes to the terminal RU1 side. Switch. Then, until the shutter curtain 1 rises to the upper limit and the upper limit limit switch LSU is opened, the DC power source supplies the terminal W, the terminal Y, the terminal RU1 of the switch contact RU, the electric motor 6, and the terminal RD2 of the switch contact RD. , Through the terminal Z to the terminal X, which causes the electric motor 6 to open the shutter curtain 1.

On the other hand, when the abnormality detector 14 detects an abnormality and the abnormality detecting relay switch RX is switched, as shown in FIG. 5, the first and second switch contacts RX1 and RX2 are provided.
Will switch between closed and open as described above. Then,
The DC power supply is directly connected to the first switch contact RX from the terminals D + and W without passing through the switching operation switch 8.
1, the relay switch RD for closing, the limit switch LSD for lower limit, the flow to reach the terminal X, whereby even if the switch 8 for switching operation is in an operation state such as opening, closing, or stopping, The electric motor 6 is automatically closed to give priority to the shutter curtain 1 so that the shutter curtain 1 is automatically closed. In the figure, D1 to D7
Is a diode, R1 to R7 are resistors, NL is an indicator lamp,
PL is a pilot lamp, C1 and C2 are capacitors, F
1 to F2 are fuses, LEDs are light emitting diodes, and SW is a battery charging switch.

In the embodiment of the present invention constructed as described above, as described above, in normal times without fire or the like, the shutter curtain 1 allows the operator to selectively perform the switching operation of the switching operation switch 8. It can be opened, closed and stopped. In this case, the electric motor 6 may have a small driving force because the stored force of the ammunition 5 acts as a balance ammunition, and may be small and lightweight.

On the other hand, in the event of an abnormality such as a fire,
When the detection signal from the abnormality detector 14 is input to the abnormality detection relay switch RX constituting the opening / closing control mechanism 9 and the switch contacts RX1 and RX2 are switched, the DC power supply switches the switching operation switch 8 as described above. It will flow directly to the closing relay switch RD without passing through,
As a result, even if the switching operation switch 8 remains switched to the open state, for example, the switching operation switch 8 is automatically closed to give priority to the switching operation switch 8. Can effectively prevent the damage.

In addition, since the battery 13 is automatically applied by the battery 13 in case of power failure, the automatic closing of the shutter curtain 1 is made even more reliable when an abnormality occurs, and the safety is greatly improved. Will be done.

The present invention is not limited to the above embodiment, but is not limited to the one in which a relay switch is provided and controlled in order to give priority to the switching operation switch when an abnormality occurs. Needless to say, it can be implemented also by electronic control using a microcomputer.

[0014]

In summary, since the present invention is constructed as described above, the shutter curtain can be opened, closed and stopped by the operator selectively switching the switching operation switch in normal times. In this case, the electric motor may have a small driving force, and may be small and lightweight, because of the stored force of the ammunition acting as a balance ammunition.

On the other hand, in the event of an abnormality such as a fire,
When the detection signal from the anomaly detector is input to the opening / closing control mechanism, the closing control command is output based on this, giving priority to other control commands to automatically close the shutter curtain. It is possible to effectively prevent damage such as fire spread and fire spread.

[Brief description of drawings]

FIG. 1 is a front view of an electric shutter.

FIG. 2 is a control circuit diagram showing a closing operation of the electric shutter in normal times.

FIG. 3 is a control circuit diagram showing an opening operation of the electric shutter in normal times.

FIG. 4 is a control circuit diagram showing a stop operation of the electric shutter in normal times.

FIG. 5 is a control circuit diagram showing the operation of the electric shutter in the event of an abnormality such as a fire.

[Explanation of symbols]

 1 Shutter curtain 5 Bullet 6 Electric motor 8 Switch for switching operation 9 Open / close control mechanism 13 Battery 14 Abnormality detector RX Abnormality detection relay switch RX1 1st switch contact RX2 2nd switch contact

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display location 7238-2E E06B 9/204 F

Claims (1)

[Claims] 1. A storage device is provided between a support shaft fixed to a skeleton side and a winding wheel rotatably supported by the support shaft, based on rotation of the winding wheel in a feeding direction of a shutter curtain. The winding force is set so as to substantially correspond to a change in the weight of the shutter curtain fed from the winding wheel, and the winding wheel is rotated by the forward and reverse driving of the switch. In a balance type electric shutter, an open / close control mechanism that outputs an open / stop / close control command to the switch is connected to an open / close control mechanism while an abnormal detector for detecting the occurrence of an abnormal situation such as a fire is connected. Is a balance-type electric shear equipped with a closing command priority means for outputting a closing control command prior to other control commands based on an input of a sensing signal from the abnormality detector and automatically closing the command. Automatic closing device for tutors.