JP2013185355A - Opening/closing body control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable operation of a push-button switch to be cancelled when a failure such as contact fusion or switch hanging occurs in the push-button switch.SOLUTION: When a failure such as contact fusion or switch hanging occurs in opening or closing switch of switching means, opening/closing means stops at an upper stage position or a lower limit position. When it is detected that an on-state continues for a prescribed time (for example, about 5 seconds) or longer continuously after stopping, notification means notifies an abnormality and control means cancels the operation of the switching means, regarding that a failure occurs in the switching means. When an off-state of a stop switch at a b-contact continues for a prescribed time, an abnormality of the stop switch is notified, determining that a failure occurs in the stop switch.

Description

  The present invention relates to an open / close body control system that controls the operation of an open / close body in accordance with an operation of a push button switch, and more particularly to an open / close body control system that can ensure safety corresponding to a malfunction of a push button switch.

  Opening and closing body devices such as shutter curtains are installed at the opening of structures including buildings such as houses, buildings, factories, warehouses, and garages, and the opening is opened and closed by moving the opening and closing members. To do. The opening / closing body device closes the entire opening by gradually feeding and lowering a shutter curtain as an opening / closing member from the upper part of the opening. This opening / closing body device controls the opening / closing operation of the shutter curtain in response to each operation of the push button switch for opening / closing. As such an opening / closing body device, there is one as described in Patent Document 1.

Japanese Patent Laid-Open No. 11-200745

  The contact of each open / close pushbutton switch is generally constituted by an a contact for an open switch and a close switch and a b contact for a stop switch. When the open switch contact a is welded and the upper limit is stopped, the shutter curtain does not move down even if the closing switch is operated, or the shutter curtain starts to move down once when the closing switch is operated. However, after the shutter curtain reached the lower limit, it sometimes reversed and rose. Also, when the contact a of the closed switch is welded and the lower limit is stopped, the shutter curtain does not move up even when the open switch is operated, or the shutter curtain moves up once accordingly when the open switch is operated. After the shutter curtain reached the upper limit, it might reverse and descend.

  The present invention has been made in view of the above points, and an opening / closing body control system capable of invalidating the operation of a push button switch when a malfunction such as contact welding or switch catching occurs in the push button switch. The purpose is to provide.

  The first feature of the opening / closing body control system according to the present invention is that the opening / closing means provided in the opening, the switch means having each push button switch for opening / closing, and the opening / closing according to the operating state of the switch means. Control means for controlling the operation of the means, and the switch when the open / close switch of the switch means is determined to be on for a predetermined time or more while the open / close means is stopped at the upper position or the lower limit position. A notification means for notifying the abnormality of the means; and an operation control means for invalidating the operation of the opening / closing means by the operation of the switch means. The switch means is composed of three push buttons of an open switch, a stop switch, and a close switch, and is operated manually. When there is a malfunction such as contact welding or switch catching in such an open switch or closed switch of the switch means, the open / close means stops at the upper stage position or the lower limit position. When it is detected that the ON state continues for more than (for example, about 5 seconds), the switch means is informed of the abnormality and the operation control means invalidates the operation by the switch means that the switch means has failed. .

  A second feature of the opening / closing body control system according to the present invention is that, in the opening / closing body control system according to the first feature, the informing means continues the OFF state for a predetermined time due to a failure of the stop switch of the switch means. If there is, it is to notify the abnormality of the switch means. Usually, the stop switch is composed of b contact. Therefore, in the present invention, when the OFF state of the stop switch at the b-contact has continued for a predetermined time, it is determined that a failure has occurred in the stop switch, and the abnormality of the stop switch is notified.

  According to a third feature of the opening / closing body control system according to the present invention, in the opening / closing body control system according to the first or second feature, the notification means notifies the abnormality using the LED means and / or the buzzer means. There is to do. The present invention clarifies that the notifying means is composed of LEDs and / or buzzers. There are 3 types of LEDs that are different in color, size, etc., corresponding to each push button switch in the open / close stop, so that you can easily recognize which push button switch in the open / close stop has a problem. You may make it possible, and you may make it display a malfunction simply using one type of LED. Also, the buzzer may perform three types of pronunciation corresponding to each push button switch.

  According to the opening / closing body control system of the present invention, there is an effect that the operation of the push button switch can be invalidated when a trouble such as contact welding or switch catching occurs in the push button switch.

It is a figure which shows schematic structure of the shutter apparatus which concerns on the opening-and-closing body control system of this invention. It is a figure which shows schematic structure of the opening-closing body control system of this invention. It is a figure which shows the detail of the pushbutton switch abnormality process which the opening-and-closing body control system of this invention performs. It is a figure which shows the modification in case the control circuit of the opening-closing body control system of this invention is comprised with a sequence circuit.

  A preferred embodiment of an opening / closing body control system according to the present invention will be described below with reference to the accompanying drawings. In this embodiment, a shutter device that is controlled to be opened and closed vertically will be described as an example of the opening / closing body control system. FIG. 1 is a diagram showing a schematic configuration of a shutter device according to the opening / closing body control system of the present invention. This shutter device is provided at an opening of a building, and basically includes a shutter case 1, a shutter curtain 2, guide rails 3, 4, a winding shaft 5, a chain 6, a motor 7, a control device 8, and a push button. The switch 9 is configured. The shutter device is normally controlled to open and close by operating a motor 7 serving as an opening / closing device in accordance with the operation of the push button switch 9. In this shutter device, the shutter curtain 2 is held in the open state wound around the winding shaft 5 by a mechanical holding mechanism (not shown).

  The guide rails 3 and 4 are provided on both ends of the opening of the building so as to be in contact with both ends of the shutter curtain 2, and have a U-shaped guide groove extending from the lintel to the floor surface. It is comprised with the metal member which has. The shutter curtain 2 moves up and down along the guide grooves of the guide rails 3 and 4 to open and close the opening. The winding shaft 5 is rotatably provided at both ends of the shutter case 1 and winds up or rewinds the shutter curtain 2. The chain 6 connects a main sprocket provided on the rotating shaft of the motor 7 and a driven sprocket provided on the rotating shaft of the winding shaft 5. Accordingly, the rotational driving force of the motor 7 is transmitted to the winding shaft 5 side via the chain 6, and when the motor 7 rotates, the winding shaft 5 rotates via the chain 6 and the opening / closing operation of the shutter curtain 2 is controlled. It has come to be.

  FIG. 2 is a diagram showing a schematic configuration of the opening / closing body control system of the present invention. The control device 8 includes a microcomputer 80, and includes a motor drive circuit 81 that drives and controls the motor 7, an LED 82 that notifies the operator of an abnormality, and a buzzer 83. Power is supplied to the control device 8 via the power supply line AC. The control device 8 controls the rotation of the motor 7 by the motor drive circuit 81 based on a control signal corresponding to the operation state of each operation button on the push button switch 9.

  The push button switch 9 has an open switch 9A, a stop switch 9B, and a close switch 9C as control switches corresponding to each operation of opening and closing, and a control signal corresponding to the operation state of each button is sent to the micro switch of the control device 8. Output to the computer 80. The open switch 9A and the closed switch 9C are constituted by a contact, and the stop switch 9B is constituted by a b contact. The upper limit switch 8A and the lower limit switch 8B maintain an on / off state according to the rotational position of the motor 7. When the shutter curtain 2 reaches the upper limit or lower limit position, the upper limit switch 8A or The contact of the lower limit switch 8B is closed, and the microcomputer 80 of the control device 8 is notified that the shutter curtain 2 has reached this upper limit position or lower limit position. When the shutter curtain 2 reaches the upper limit or lower limit position, the microcomputer 80 of the control device 8 stops the shutter curtain 2 at the upper limit or lower limit position.

FIG. 3 is a diagram showing details of the push button switch abnormality process executed by the opening / closing body control system of the present invention. Hereinafter, the operation of the opening / closing body control system will be described using this flowchart.
In step S31, it is determined whether or not the contact of the stop switch 9B of the push button switch 9 is in an OFF state. Since the stop switch 9B is composed of the b contact, when it is determined that the stop switch 9B is not in the off state (no), that is, in the on state, it means that the stop switch 9B is not operated. Proceed to S34. On the other hand, if it is determined that the switch is in the off state (yes), it means that the stop switch 9B has been operated, and the process proceeds to step S32.
In step S32, it is determined that the stop switch 9B has been operated, the shutter curtain 2 is stopped, and the process proceeds to step S33. If the shutter curtain 2 is already stopped, the stopped state is continued as it is.

  In step S33, it is determined whether or not the stop switch 9B is in an OFF state due to some trouble, and if it is determined that some trouble has occurred, it is assumed that a trouble has occurred. The provided LED is turned on and the buzzer is sounded to notify that any trouble (contact welding, switch catching, etc.) has occurred in the stop switch 9B. As a process for determining whether or not any trouble has occurred, for example, it is determined whether or not the stop switch 9B continues in an OFF state for a predetermined time or longer (for example, 5 seconds or longer), or the stop switch 9B is turned OFF. The state is counted for every predetermined time interval, and it is determined whether or not this number is equal to or greater than the predetermined number. When it is detected that the stop switch 9B is turned on during this determination process, the process proceeds to step S34. If it is detected that the open switch 9A or the close switch 9C is turned on during this determination process, the shutter curtain 2 may be opened or closed based on instructions from these switches.

  In step S34, it is determined whether or not the shutter curtain 2 is stopped at the upper limit position. If it is stopped (yes), the process proceeds to step S35. If the shutter curtain 2 is not stopped at the upper limit position (no), the process proceeds to step S36. In step S35, since the open switch 9A of the push button switch 9 is composed of contact a, it is determined whether or not the ON state has elapsed for 5 seconds or more due to problems such as contact welding or switch catching. If the on state continues (yes), the process proceeds to step S38, and if not (no), the process proceeds to step S3C.

  In step S36, it is determined whether or not the shutter curtain 2 is stopped at the lower limit position. If the shutter curtain 2 is stopped (yes), the process proceeds to step S37. If the shutter curtain 2 is not stopped at the lower limit position (no), the process proceeds to step S3C. In step S37, since the closing switch 9C of the push button switch 9 is composed of contact a, it is determined whether or not the ON state has elapsed for 5 seconds or more due to problems such as contact welding or switch catching. If the on state continues (yes), the process proceeds to step S38, and if not (no), the process proceeds to step S3C.

  In step S38, the opening / closing operation of the shutter curtain 2 corresponding to the operation of the push button switch 9 is performed because the contact of the push switch 9A or the close switch 9C of the push button switch 9 is closed due to problems such as contact welding or switch catching. It is invalid so that cannot be performed. In step S39, an LED provided on the control panel is turned on and a buzzer is sounded to notify that any malfunction (contact welding, switch catching, etc.) has occurred in the open switch 9A or the closed switch 9C.

  In steps S3A and S3B, some troubles (contact welding, switch catching, etc.) have occurred in the open switch 9A or the closed switch 9C, and the state informing them is continuing. Therefore, the stop switch 9B of the push button switch 9 is turned on. It can be released by pressing and holding for 5 seconds or longer. In step S3A, it is determined whether or not the stop switch 9B of the push button switch 9 is off, that is, whether or not the stop switch input continues for 5 seconds or more. If the off state continues for 5 seconds or more (yes), step S3B is performed. If not, return to Step S38.

  In step S3B, whether or not the switch inputs of the open switch 9A and the closed switch 9C are canceled, that is, in a switch-off state, is determined in order to determine whether or not any trouble that has occurred in the open switch 9A or the closed switch 9C has been canceled. If it is in the off state (yes), the process proceeds to step S3C. If it is not in the off state (the defect has not been released) (no), the process returns to step S38, and notification is made until the defect is eliminated. continue.

  In step S3C, since there are no defects in the open switch 9A, the stop switch 9B, and the close switch 9C of the push button switch 9, the open state of the shutter curtain 2 corresponding to the operation of the push button switch 9 is enabled. . In step S3D, if the LED 82 provided on the control panel is lit, the LED 82 is turned off, and if the buzzer 83 is sounding, it is stopped and the process returns to step S31.

  Although not shown in the process of FIG. 3, in addition to the process of FIG. 3, when the shutter upper limit is stopped (when it is determined “yes” in step S <b> 34), the malfunction state of the closed switch 9 </ b> C is determined. Additional steps may be added. That is, if the closed switch 9C is in the on state, it is unknown at this point whether it is due to a normal closed switch operation or due to a malfunction. A closing operation is started, and subsequently a failure determination is performed. That is, the specific process is similar to step S35, and it is determined whether or not the closed switch 9C continues to be on for a predetermined time or longer (for example, 5 seconds or longer), or the closed switch 9C. For example, it is determined whether or not this number of times is a predetermined number of times at predetermined time intervals. If it is determined that some trouble has occurred, it is assumed that the trouble has occurred. For example, the LED provided on the control panel is turned on and the buzzer is sounded, and the open switch 9A or the close switch 9C has some trouble ( Notification that contact welding, switch catching, etc.) has occurred. Along with this notification, if necessary, the closing operation may be stopped, and the same process as in steps S38 to S3B may be performed to invalidate the shutter opening / closing operation. Even if the closing operation is continued, the shutter stops when the shutter reaches the lower limit position. Therefore, the failure state of the closing switch 9C can be determined at the lower limit position as shown in the processing after step S34. There is no need to continue the closing operation.

  Similarly, in addition to the processing of FIG. 3, the malfunction state of the open switch 9A may be determined while the shutter lower limit is being stopped (when it is determined yes in step S36). In other words, if the open switch 9A is in the on state, the shutter curtain 2 is started to operate normally as a normal open switch operation, and the predetermined time or longer (for example, 5 seconds or longer, for example) as in the failure determination process of the closed switch 9C. ) It is determined whether or not the open switch 9A continues to be in the ON state, and whether or not the open switch 9A is in the ON state is determined whether or not this number of times has reached a predetermined number of times at predetermined time intervals. Or by. If it is determined that some kind of trouble has occurred, it is notified that a trouble has occurred, and the same notification as in the case of the closed switch 9C is made, and the shutter opening / closing operation is invalidated as necessary. It should be noted that when the stop switch is not at the upper limit or the lower limit but is stopped at an intermediate position (even during the opening / closing operation if necessary), the open state of the open switch 9A or the close switch 9C is set to a predetermined time or more or a predetermined number of times as in the above-described processing. If it is determined that a failure has occurred, a notification that a failure has occurred and the shutter opening / closing operation may be invalidated.

  In the present embodiment, it has been described that the open switch and the closed switch are configured as a contact and the stop switch is configured as a b contact. However, the present invention is not limited to this, and the open switch and the closed switch are configured as a b contact and a stop switch. Whether it is configured as a-contact or b-contact, such as a-contact, is arbitrary, and push button switch abnormality processing or the like may be determined as an on / off state according to this configuration.

  FIG. 4 is a diagram showing a modification in the case where the control circuit of the opening / closing body control system of the present invention is configured by a sequence circuit. This switching body control system uses a three-phase alternating current (R phase, S phase, T phase) of AC200 [V], which is a commercial power supply, as a drive source. Each of the three-phase AC power supply lines is connected to the motor 7, and an ascending (opening) relay contact OM or a descending (closing) relay contact CM is provided in the middle thereof. The reverse phase prevention circuit APR supplies the R-phase voltage to the push button switch 9 via the motor protector 20 when the three-phase alternating current of the R-phase, S-phase, and T-phase is correctly supplied.

  The anti-phase prevention circuit APR is configured not to supply the voltage to the push button switch 9 when the three-phase alternating currents of the R-phase, S-phase, and T-phase are in reverse phase. The motor protector 20 is a heating detection switch provided in the motor 7 and stops supplying the R-phase voltage when the motor 7 is heated. Accordingly, when the reverse phase prevention circuit APR and the motor protector 20 are operated, power is not supplied to the push button switch 9, so that the opening / closing body control system does not operate.

  When each relay contact OM or CM provided between the three-phase alternating current drive source and the motor 7 is closed, the motor 7 thereby causes the motor 7 to operate in the direction corresponding to the closed contact (AC200 [V] three-phase alternating current). ) Is supplied, and the raising (opening) or lowering (closing) of the shutter curtain 2 is controlled. These relay contacts OM and CM are configured to close when the drive relay 21 for raising and the drive relay 22 for lowering are energized.

  The electromagnetic brake BC is a braking means connected to the motor 7, and releases the braking operation while the motor 7 is rotating, and executes the braking operation while the motor 7 is stopped. The electromagnetic brake BC is connected to relay contacts OM and CM via a rectifier RF and a counter CO. The rectifier RF rectifies the current supplied to the electromagnetic brake BC, and the counter CO counts the number of operations of the electromagnetic brake BC, that is, the number of opening / closing operations of the shutter curtain 2.

  When the open switch 9A is operated, the AC200 [V] commercial power supply is energized to the open driving relay 21. This energization closes the relay contact (OM) provided on the power line of the motor 7, the motor 7 is driven in the opening direction, and the shutter curtain 2 rises. Since the self-holding relay contact 21A is closed by energization of the drive relay 21, once the open switch 9A is pressed, the self-holding relay contact 21A does not have to be kept pressed even after the open switch 9A is continuously pressed. The energized state of the drive relay 21 is maintained, and the ascending operation of the shutter curtain 2 is continued. The push button switch 9 includes such a self-holding circuit. When the shutter curtain 2 reaches the upper limit position, the contact of the upper limit switch 8A is opened, so that the drive relay 21 is deenergized and the shutter curtain 2 stops at the upper limit position.

  Similarly, when the closing switch 9C is operated, the commercial power source of AC 200 [V] is energized to the closing driving relay 22, the relay contact (CM) provided on the power line of the motor 7 is closed, and the motor 7 Is driven in the closing direction, and the shutter curtain 2 descends. Since the self-holding relay contact 22A is closed by energization of the drive relay 22, the energized state of the drive relay 22 is maintained through the self-holding relay contact 22A, and the lowering operation of the shutter curtain 2 is continued. When the shutter curtain 2 reaches the lower limit position, the lower limit switch 8B opens the contact, so that the commercial power supply to the drive relay 22 is cut off, and the shutter curtain 2 stops at this lower limit position.

  Further, when the stop switch 9B is operated, the self-holding circuit is opened, and both the ascending and descending operations are stopped. The emergency switch 25 is a switch for emergency stop when the shutter curtain 2 passes through the upper limit switch 8A and rises abnormally.

  The timer T1 and the relay contact 28 are provided in parallel to the opening drive relay 21 and the upper limit switch 8A. The timer T2 and the relay contact 29 are provided in parallel to the closing drive relay 22 and the lower limit switch 8B. When the shutter curtain 2 reaches the upper limit or lower limit position and the contact of the upper limit switch 8A or the lower limit switch 8B is opened, the operation of the shutter curtain 2 is stopped and the energization to the drive relays 21 and 22 is cut off. The relay contacts 21A and 22A for self-holding are opened, and the relay contacts 28 and 29 are closed. At this time, if a malfunction such as contact welding or switch catching occurs in the open switch 9A or the closed switch 9C, energization of the timer T1 or timer T2 is started, and the timer T1 or timer T2 starts timing. When a predetermined time (about 5 seconds) elapses from the start of energization, the timer T1 or the timer T2 turns on an LED provided on the control panel at that time and sounds a buzzer, and opens the open switch 9A or the closed switch 9C. Notify that some trouble (contact welding, switch catching, etc.) has occurred.

1 ... Shutter case,
2 ... Shutter curtain
20 ... Motor protector,
21, 22 ... Drive relay,
21A, 22A ... relay contact,
25 ... emergency switch,
28, 29 ... relay contacts,
3, 4 ... guide rails,
5 ... winding shaft,
6 ... chain,
7 ... motor,
8 ... Control device,
80 ... microcomputer,
81 ... Motor drive circuit,
82 ... LED,
83 ... Buzzer,
8A ... Upper limit switch,
8B ... Lower limit switch,
9 ... pushbutton switch,
9A ... Open switch,
9B: Stop switch,
9C: Close switch,
T1, T2 ... Timer

Claims (3)

Opening and closing means provided in the opening;
Switch means with each push button switch for opening and closing, and
Control means for controlling the operation of the opening and closing means in accordance with the operating state of the switch means;
Informing means for notifying the abnormality of the switch means when it is determined that the open switch or the closed switch of the switch means is in an on state for a predetermined time or more while the opening / closing means is stopped at the upper position or the lower limit position;
An opening / closing body control system comprising: an operation control unit that invalidates an operation of the opening / closing unit by an operation of the switch unit. In the opening-and-closing body control system according to claim 1,
The opening / closing body control system, wherein the notification means notifies an abnormality of the switch means when an off state continues for a predetermined time due to a malfunction of a stop switch of the switch means. In the opening and closing body control system according to claim 1 or 2,
The opening / closing body control system, wherein the notifying means notifies an abnormality using an LED means and / or a buzzer means.

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