JPH028491A - Obstacle warning device for architectural shutters - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an obstacle warning device for architectural shutters installed in openings of buildings, houses, etc.

[Prior art and problems to be solved by the invention] In general, in this type of architectural shutter, if it is an electric shutter, if there is an obstacle such as a person or baggage during the opening/closing operation, the shutter will close. A seat plate switch is installed on the seat plate at the bottom of the curtain to detect obstacles and stop the opening/closing operation in an emergency to ensure safety. By the way, the above-mentioned seat plate switch cannot detect an obstacle unless it comes into contact with an obstacle when the shutter curtain is closed. Therefore, when the shutter curtain is fully opened, there is no possibility that an obstacle will be left in the shutter curtain closing operation area for a long time. For this reason, the existence of such an obstacle is not known until the shutter curtain is lowered (by the way, there is also detection using a proximity sensor, but this object cannot be detected if it is moving). (It is effective only for those who are present; it is powerless for those who are stationary.) However, until now, there is no known device that can detect and notify objects that have been left in the closed area of the shutter curtain for a long period of time. Not only that, but it also impairs building management, for example, it is necessary to install this in department stores, buildings, hotels, and other areas where fire prevention divisions are required under the Fire Service Act. If you try to use it as a temporary seat board switch, even if an unattended obstacle is detected, in the event of an emergency such as a fire, it will be necessary to remove the obstacle to prevent confusion and prompt evacuation. is virtually impossible to do, and this results in
There is a risk that the well-thought-out fire shutters may not work effectively and cause a major disaster, so to avoid this, regularly check to see if there are any obstacles in the closed area of the shutter curtains. This cannot be achieved without checking and ensuring safety, which is a big burden on safety management and has become a problem.

[Means for Solving the Problems] In view of the above-mentioned circumstances, the present invention has been devised for the purpose of providing an obstacle warning device for architectural shutters that can eliminate these drawbacks. Obstacle detection means is provided for detecting obstacles in the closing operation area of the shutter curtain when the curtain is opened, and an obstacle detection signal is preliminarily inputted to a control section that inputs the detection signal of the obstacle detection means. The present invention is characterized in that an alarm command means is provided for outputting a control command to issue an alarm to the alarm device when the detection continues beyond a set time.

With this configuration, the present invention detects and determines if an obstacle remains in the closing operation area of the shutter curtain for a long time, and controls the system to issue an alarm.
This is to encourage the removal of obstacles.

[Example] Next, an example of the present invention will be described based on the drawings. In the drawings, reference numeral 1 denotes a shutter curtain of an architectural shutter, and the shutter curtain 1 is wound around a ram 3 to an interior winding 1 around a shutter case 2 provided above an opening, and Winding red drum 3
The left and right edges are guided by guide rails 5 to open and close up and down based on the winding and unwinding operation by forward and reverse driving of the switch 4, as in the conventional case.

6.7 is the appropriate position of the guide rail 5 (for example, 14 mark and 46an from the floor surface, 20cI11 and 50an)
A phototube device (corresponding to the obstacle detection means of the present invention) installed at two locations (locations that people cannot avoid when entering and exiting under normal conditions), one of which is A light projector is provided on the guide rail 5, and a light receiver is provided on the other guide rail 5 so as to face each other. These first and second photocell devices M6.7 are used to ensure detection of the detection light emitted from the projector (e.g., infrared rays and far infrared rays, which are distinguished from visible light rays). When the receiver detects the detection beam (preferably), it means that there is no obstacle, and when it does not receive the detection beam, it means that it is blocked by an obstacle. is now possible.

In this embodiment, both the first and second phototube devices 6.7 are arranged at the bottom of the groove of the guide rail 5, so that when the shutter curtain 1 descends and reaches the phototube position, the detection light beam is configured to be blocked by a shutter curtain 1.

Further, switches 8.9 for the first and second limit switches 1 are installed in the switch 4 so as to correspond to the respective phototube devices 6.7, and these first and second limit switches 8.9 is configured in advance to detect that the lower edge of the shutter curtain 1 has reached the position just before reaching the corresponding first and second phototube devices 6.7! I! I
section is set. The specific configuration of these limit switches 8 and 9 will be omitted because conventionally known ones can be adopted, but for example, the limit switches 8 and 9 may be detected by counting the number of rotations of the motor of the switch 4. It can be configured as follows.

Reference numeral 10 denotes a control section for controlling the drive of the switch 4, and the control section 10 is constructed using a component device such as a microcomputer. In addition to the limit switches 8 and 9, there are other switches such as a downward push button switch PBD provided in the control room (not shown) (the control room is further provided with a rise push button switch PBU, a stop push button switch PBS, etc.). It goes without saying that the switch is also wired to the control unit 10), and the hand stop push button HPBS is provided near the guide rail 5 at the opening (switches HPBU and HPBD for raising and lowering are also provided). Signals are input from various devices such as (wired to the control unit 10). The control unit IO makes a judgment based on these input signals and sends a corresponding control signal to a relay switch in the power supply circuit control unit 12 arranged in the power supply control unit that controls switching of the power supply current to the switch 4. Alarm 1
It is designed to output to various actuators such as 3rd etc.

Next, the control procedure will be explained using a flow chart. First, turn on the power to start the system, and with the initial settings completed, press the lower pushbutton switch PBD to OFF.
Determine whether or not the N operation has been performed.

If a NO judgment is made that the ON operation has not been made, a judgment is made as to whether either of the first and second phototube devices 6.7 is detecting an obstacle. When it is determined that an obstacle is being detected, the first register R1 is set to "1" (1←R1) and the first timer T1 is started and set. If it is determined that this obstacle detection state continues even after the timer time T1 of the first timer has elapsed, a control command is output to the alarm device 13 to issue an alarm. The warning will continue to be issued until the obstruction is removed. The timer time T1 of this first timer can be selected and set as an appropriate time considering the troublesomeness of the alarm being issued in a short time, but for example, it can be set to 10 minutes, 15 minutes, or 1 hour. It becomes a setting. Therefore, this timer time TI
If the obstacle is not removed after exceeding the limit, a warning will be issued to prompt the obstacle to be removed.

On the other hand, if the obstacle is removed within the first timer time T1, the first timer T1 is reset and the first register R1 is also set to "OJ" (0←R1) to return to the initial state.

Further, it is conceivable that the downward push button switch PBD is turned on during the elapse of the timer time T1, but in this case, it is determined that the first register R1 is set to "1" and the second register By setting R2 to "1", the system is set to be the same as when the first timer time T1 has elapsed, and the ON operation of the alarm 13 is controlled until the obstacle is removed. be done. In this case, if an obstacle is detected during the lowering operation, which will be described later, and it is not removed even after the fourth timer time T4 elapses,
In addition to issuing an emergency alarm, a hand-held stop switch HPBS
It is also possible to control the alarm so that it does not stop unless you operate it.

On the other hand, when no obstacle is detected, the lowering push button switch PB
When D is turned ON, the third register R3 is set to “1”
(This time T2 is sufficient, for example, as long as it is sufficient to alert people around you, for example, about 2 seconds.) Then, the power supply circuit controller 12 issues an alarm for a time T2. A control command for lowering the switch 4 is output. In this descending control state, it is determined whether or not the lower second limit switch 9 has detected the shutter curtain 1. When it is determined that the shutter curtain 1 is in the detection state, the shutter curtain 1 is lowered to the lower limit, ignoring the detection signals from both phototube devices 6 and 7, and is fully opened. Further, when it is determined that the second limit switch 9 is not detecting the shutter curtain 1, it is determined whether the upper first limit switch 8 is detecting the shutter curtain 1, and the detection state is established. If it is determined that If it is determined that the phototube device 6.1 is not detected, the obstacle detection by the phototube device 6.7 will be performed.

Next, a system when an obstacle is detected while the curtain is being lowered will be described. This obstacle detection is performed by the second phototube device 6 as described above, or by either of the two phototube devices 6.7.
When an obstacle is detected by these methods, an emergency stop command is immediately output to the power circuit control unit 12 to stop the switch 4, and an alarm command signal is output to the alarm 13, so that the obstacle is detected. If it is a person, the person will be urged to evacuate immediately, and if it is a stationary object, the people nearby will be urged to evacuate. On the other hand, in the control section 10, the fourth register R4
is set to "1", and time T3 (this time ↑
3 is preferably a short period of time, such as 5 seconds, so as not to put an undue burden on the reversing switch 4.)
After the elapse of time, the switch 4 is reversed, the shutter curtain 1 is wound up, and raised control is performed to open it to the upper limit, and the fourth timer T4 is started and set. The timer time T4 of the fourth timer may be, for example, about 3 minutes, as long as the administrator can determine that the environment is such that the obstacle cannot be removed quickly. Then, it is determined whether or not the fourth timer time T4 has elapsed, according to the route determined by the fact that the fourth register R4 is set to "1" upon detection of an obstacle, and while the fourth timer time T4 has not been exceeded, When the obstacle has been removed, the fourth register R4 is set to "O", a stop command is also output to the alarm 13, and a control command is output to lower the shutter curtain 1 again. In addition, if it is determined that the obstacle has not been removed even after the timer time T4 has elapsed,
A control command is output to the alarm device 13 to issue an emergency alarm. In this embodiment, this emergency alarm is controlled to be stopped by the staff member going to the opening and pressing the hand stop push button switch HPBS, and the staff member who goes there takes necessary safety measures such as removing obstacles. It is designed to encourage picking.

In the embodiment of the present invention constructed as described above, if an obstacle remains at the guide rail position when the shutter curtain 1 is fully opened and this is detected by the first or second phototube device 6.7, If this detection time continues for the first timer time T1 set, the control unit 10 outputs a command to the alarm device 13 to issue an alarm. Therefore, a person nearby or a staff member who is present can remove the obstacle that has been left unattended for a long time and manage it so that it does not interfere with the lowering of the shutter curtain 1.

As described above, in the present invention, if an obstacle that obstructs the lowering of the shutter curtain 1 is left unattended for longer than the preset first timer time T1, this is detected and automatically By issuing an alarm and prompting its removal, it is possible to manage the lowering of the shutter curtain 1 smoothly without any hindrance.Therefore, not only can the shutter curtain 1 be closed in normal times, but also in an emergency such as a fire. It is possible to reliably avoid the problem that the shutter curtain 1 cannot be fully closed due to an obstruction, and therefore cannot function effectively as a fire prevention shutter, which is extremely convenient in terms of disaster prevention.

Furthermore, the detection means for detecting obstacles when the shutter curtain is fully opened can effectively utilize the first and second phototube devices 6.7 for detecting obstacles when the shutter force tens 1 moves downward. Therefore, there is no need to provide a separate dedicated detection means, which not only simplifies the structure but also reduces the number of parts.
This will also greatly contribute to the reduction.

Also, in this device, the first and second phototube devices 6.7 are arranged in the rail groove of the guide rail 5.
By doing this, it is possible that the lowering of the shutter curtain 1 may interrupt the detection light beam and enter the obstacle detection state, but the first and second limit switches 8 detect this state immediately before the shutter curtain 1 falls. .9, the first photocell device 6 or both photocell bags W6.7
This problem is avoided by ignoring the detection (another method is to turn off the power to the device), so there is no problem.

Furthermore, in this case, an obstacle is detected during the lowering control of the shutter curtain 1 and the shutter curtain 1 is fully opened, but if it is determined that there is no prospect of the obstacle being removed, that is, the fourth timer time T4 has elapsed. However, if the obstacle detection continues as before, an emergency alarm will be issued, and this emergency alarm can only be canceled by pressing the hand stop push button HPBS located around the opening, so the shutter The curtain 1 is lowered again after obstacles have been removed and safety has been confirmed on-site, which has the advantage of improving safety management.

In the above embodiment, alarms or emergency alarms are set to be issued in various cases, but if these alarms and emergency alarms are changed according to the obstacle detection situation, the obstacle detection It is preferable to adopt this method since it has the advantage of being able to respond accurately.

It should be noted that the present invention is of course not limited to the above embodiments, and the point is that when the shutter curtain is opened,
Obstacle detection means for detecting obstacles in the closing operation area of the shutter curtain is provided, and the control section to which the detection signal of the obstacle detection means is inputted has a preset time for the obstacle detection signal. If detection continues beyond the
It is only necessary to provide an alarm command means for outputting a control command for issuing an alarm to the alarm device. In that case, it is not limited to electric shutters that can be opened and closed constantly as in the embodiment, but also architectural shutters such as fire and smoke prevention shutters that lower by their own weight by releasing the brake in the event of an emergency such as a fire. It is something that can be implemented.

[Operations and Effects] In summary, since the present invention is constructed as described above, when the shutter curtain is fully opened, an obstacle that interferes with the closing operation of the shutter curtain continues for a preset time or longer. If the shutter curtain is left unattended, this will be detected and an alarm will be issued automatically, prompting the removal of the obstruction and enabling continuous management to ensure that there is no problem with the closing operation of the shutter curtain. Become. As a result, unlike the conventional system that detects an obstacle that has been left unattended during the closing operation of the shutter force tens, it is possible to ensure extremely high reliability in the closing operation of the shutter force tens. This will significantly reduce the administrative burden when used as an emergency vehicle, and will make a significant contribution to disaster prevention.

[Brief explanation of the drawing]

The drawings show an embodiment of the obstacle warning device for an architectural shutter according to the present invention, in which FIG. 1 is a schematic front view of the architectural shutter, FIG. 2 is a horizontal sectional view of the guide rail part, FIG. 3 is a block circuit diagram of the control system, and FIGS. 4, 5, and 6 are flowcharts of the same. In the figure, 1 is a shutter curtain, 6.7 is a phototube device,
10 is a control unit, and 13 is an alarm. Patent applicant Tetsuo Hirose, patent attorney and agent of Sanwa Shutter Engineering Co., Ltd.

Claims (1)

[Claims] Obstacle detection means is provided for detecting obstacles in the closing operation area of the shutter curtain when the shutter curtain is opened, and an obstacle detection signal is input to the control section to which the detection signal of the obstacle detection means is input. Obstacle alarm for architectural shutters, characterized in that an alarm command means is provided for outputting a control command to issue an alarm to an alarm device when the obstacle is continuously detected beyond a preset time. Device.