JPH09105285A - Control board for shutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply release a self-holding circuit holding the opening/closing action of a shutter as required and easily select the operation/release of the self-holding circuit. SOLUTION: Release contact points 1, 2 are provided in series on the self- holding relay contact points 63, 64 of a self-holding circuit 60 respectively. When the release contact point 1 is opened, the power feed to a release relay 61 via the self-holding relay contact point 63 is cut off, and the self-holding action is released. During this release, the release relay 61 is excited only in the period when a lift push button switch 53 is pushed, and a motor is operated to lift a shutter, however the shutter is immediately stopped when the lift push button switch 53 is released.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shutter control panel for controlling opening / closing of an electric shutter, and more particularly to a shutter control panel capable of selectively operating / releasing a self-holding circuit for holding a shutter opening / closing operation.

[0002]

2. Description of the Related Art An electric shutter is opened and closed by operating an operation unit connected to a control panel. FIG. 4 is a diagram showing a circuit configuration of a conventional control panel 50. Power line (R,
(S, T) have relay contacts 51 for opening and closing in parallel,
52 are provided, and these are push-button switches 53, 54 for raising and lowering, which are normally-open contacts provided on the operation portion PBS.
Is closed by the operation of, and the motor M is adapted to rotate in either the opening or closing direction.

A self-holding circuit 60 for holding the operation state of each push button switch is provided in the control panel 50. The self-holding circuit 60 has an opening relay 61 in series with the ascending push button switch 53 and a closing relay 62 in series with the descending push button switch 54, and these are opened via a normally-closed contact stop switch 55. Further, each of the closing relays 61 and 62 is further connected in parallel with an opening self-holding relay contact 63 and a closing self-holding relay contact 64.

The self-holding circuit 60 has a relay 61 for opening when the push-button switch 53 for raising is pressed.
Is energized, the self-holding relay contact 63 and the opening relay contact 51 (OM) are closed, and thereafter, even if the lifting push-button switch 53 is released, the opening relay 61 is opened via the self-holding relay contact 63. Is continuously energized, the motor M continuously operates, and the shutter is opened.

When the shutter reaches the upper limit position, the upper limit switch 66 in series with the opening relay 61 is opened, the opening relay 61 is de-energized, and the opening relay contacts 51 (OM) are opened to open the motor. M stops.
Similarly, when the stop switch 55 is operated, the opening relay 61 is de-energized, and the motor M is similarly stopped. Also for the shutter lowering, the self-holding operation is performed via the self-holding relay contact 64 by the operation of the push-down switch 54 for lowering.

[0006]

However, although the self-holding operation by the control panel 50 has an advantage that this operation can be easily performed during a normal shutter operation, it is rather a hindrance when the shutter is slightly moved, such as when the shutter is installed. It was a structure that becomes. That is, when the shutter is installed, the upper and lower limit values are set, so the shutter is slightly moved at the upper and lower limit positions.
When the self-holding circuit 60 operates, the motor M continuously operates until the upper and lower limit positions are reached. Therefore, the operator needs to alternately operate the push button switch for raising (falling) and the stop switch to move the shutter, which makes it difficult to set the limit.

Further, since the limit value is not set when the shutter is installed, the self-holding operation of the self-holding circuit 60 may move the shutter to a position beyond the limit position corresponding to the limit value. In this case Shutter damage or motor failure will occur. In order to cancel this self-holding operation, it is necessary to directly change the wiring of the self-holding circuit 60 in the control panel 50. This control panel 50 is installed inside the shutter case at a high place such as a lintel after installation. It took a lot of work to do so.

Further, the self-holding circuit 60 is temporarily operated by the operating section PB.
When S is operated, the shutter continues to open and close until it reaches the upper and lower limit positions, so a place where safety is desired, for example, a place where children are likely to play or mistakenly operate the operation unit PBS. In addition, this self-holding operation is unnecessary in places where there are many people. In other words, the need for the self-holding circuit 60 is small in a shutter installed in a place where the operator directly checks and opens the shutter while taking safety into consideration.

In order to make the most of the convenience of the self-holding circuit 60, the self-holding operation of the self-holding circuit 60 is released only in a predetermined time period, and the shutter is opened and closed by the operator's confirmation during this release time period. There is also a desire to want. As described above, there is also a demand for a control panel having a configuration in which activation / cancellation of the self-holding operation of the self-holding circuit 60 can be easily selected.

The present invention has been made to solve the above problems, and a self-holding circuit for holding the opening / closing operation of a shutter can be easily released as needed, and the operation / release of the self-holding circuit can be easily performed. The purpose is to provide a control panel for the shutter that can be selected.

[0011]

In order to achieve the above object, the shutter control panel of the present invention, when an up / down switch operation is performed, supplies power to a motor for opening / closing the shutter in the operation direction. In a shutter control panel provided with a self-holding circuit (60) for holding and continuously driving, a self-holding relay contact (6) of the self-holding circuit is provided.
3, 64), each having openable and closable releasing contacts (1, 2) provided in series.

[0012] Further, as described in claim 2, the rise,
Opening / closing relays (6
1, 62) and the up / down switch are connected in parallel to the open / close relay, and the contacts are closed by the energization of the open / close relay to close the open / close switch regardless of the operating state of the up / down switch. The self-holding relay contacts (63, 64) that continue to supply power to the relay and the self-holding relay contacts are respectively arranged in series, and actuation / release of the self-holding operation by the self-holding relay contacts by opening and closing. Can also be configured to have selectable releasing contacts (1, 2).

Further, according to a third aspect of the present invention, the releasing contacts (1, 2) are constituted by mechanical operation switches that are maintained in open / closed states, respectively, and are controlled via connection lines (3). It may be configured to be installed at a remote location outside the panel.

Further, as described in claim 4, the releasing contacts (1, 2) may be automatically controlled to be opened / closed in a predetermined time zone preset by the timer (5). it can.

Self-holding relay contacts 63 and 64 of the self-holding circuit 60 are respectively provided with release contacts 1 and 4 in series.
When 2 is closed, the self-holding relay contacts 63, 64
When the self-holding operation is activated and the opening operation is performed, the self-holding operation of the self-holding relay contacts 63 and 64 can be released. When the release contacts 1 and 2 are opened to release the self-holding operation, the motor is supplied with power and rotates in the same direction to open and close the shutter only when the operating switch for raising and lowering is pressed. As soon as the operation switch is released, the power is shut off and the shutter stops, allowing the shutter to be moved slightly. At this time, it is not necessary to operate the operation switch for stopping.

[0016]

1 is a circuit diagram showing a main part of a shutter control panel according to the present invention. The basic configuration of the control panel is the same as that of the control panel 50 described above, and in FIG. 1, only the self-holding circuit 60 part provided in the control panel 50 is extracted and described. In the self-holding circuit 60 shown in FIG. 1, the same parts as those shown in FIG. 4 are designated by the same reference numerals, and the description thereof will be omitted.

In the present invention, the release contacts 1 and 2 are provided in the self-holding circuit 60 in the control panel 50. The releasing contacts 1 and 2 are self-holding relay contacts 6 for opening and closing.
3, 64 are arranged in series. For example, the releasing contacts 1 and 2 are composed of an operation switch corresponding to the power supply voltage, and the operation switch is composed of a toggle type switch or a seesaw type switch that mechanically holds the opening and closing of the switch. And is arranged on or near the circuit board of the control panel 50.

According to the above construction, by opening / closing the releasing contacts 1 and 2, it is possible to individually set the operation / release of the self-holding operation by the self-holding circuit 60 for opening and closing of the shutter. For example, if the switch of the releasing contact 1 is operated in the closing direction, the self-holding circuit 60 operates when the shutter is opened. The self-holding operation at this time is the push button switch 5 for raising the operation portion PBS.
3 is once pushed, the power source is released thereafter, even if the push button switch 53 is released.
3 is continuously supplied to the opening relay 61, the opening relay contact 51 (OM) is closed, the motor M is continuously rotated, and the opening of the shutter is maintained to the upper limit position.

On the other hand, if the releasing contact 1 is operated in the opening direction, the operation of the self-holding circuit 60 when the shutter is opened is released. That is, since the power source from the self-holding relay contact 63 to the opening relay 61 is cut off at the releasing contact 1 portion, the self-holding relay contact 63 is always open. At this time, the shutter is opened by the operation unit P.
This can be performed only while the upward push button switch 53 provided on the BS is being pressed. The ascending push button switch 53 is constituted by a normally open contact, and only when the push button switch 53 is pressed and power is supplied to the opening relay 61 via the push button switch 53, the opening relay contact 51 ( OM) is closed and the motor M is powered and can be rotated.

Accordingly, when the limit value of the upper limit position is set when the shutter is installed, the releasing contact 1 is opened to release the self-holding operation of the self-holding circuit 60 for releasing the motor. M can be performed only while the upward push button switch 53 provided in the operation portion PBS is being pressed, and both continuous operation and fine movement of the shutter can be performed only by operating the upward push button switch 53.

When the push button switch 53 is released, the opening relay 61 is immediately de-energized and the motor M can be stopped. Therefore, another stop push button switch 55 is provided.
The shutter can be moved slightly in the ascending direction without operating. As a result, it is not necessary to alternately operate the stop push button switch 53 and the stop push button switch 55 to operate and stop, so that the upper limit position is reached after the shutter approaches the upper limit position. The shutter stop operation at this time can be easily performed, and the limit value can be easily set at this upper limit position.

Similarly, when the release contact 2 is opened when the limit value of the lower limit position is set, the self-holding relay contact 64 for closing the self-holding circuit 60 becomes non-energized, and the self-holding operation can be released. The shutter can be lowered only by directly operating 54.

Further, not only when the limit value is set or reset, but also when the shutter is installed while visually checking the shutter opening, the releasing contacts 1 and 2 are similarly opened. By using the same control panel 50, it is possible to change the operation specification so that the self-holding operation of the self-holding circuit 60 is released.

The releasing contacts 1 and 2 are not limited to being provided in the control panel 50, but may be provided at remote locations outside the shutter case as shown in FIG. In this case, the releasing contacts 1 and 2 composed of operating switches can be provided in a remote operation box or the like, and the connection line 3 is extended from the control panel 50 to this operation box for wiring. With the above configuration, the self-holding operation of the self-holding circuit 60 can be activated / released at a remote location, and the limit value setting, resetting operation and the like can be easily performed.

Further, as shown in FIG. 3, a timer 5 is provided at a remote location from the control panel 50 via the connection line 3, and the release contacts 1 and 2 are controlled to open / close by time zone by the timer 5 and self-holding. The operation / release of the operation can be automatically switched. This timer 5
May be operated by a power source different from the power source of the control panel 50. Further, when the time setting of the timer 5 is fixed or semi-fixed, the timer 5 and the releasing contacts 1 and 2 are provided near the control panel 50 in the same shutter case without providing the connecting line 3. Good.

The releasing contacts 1 and 2 composed of the relay contacts are controlled to open and close by a relay provided in the timer 5, and the releasing contacts 1 and 2 are controlled to the timer 5 in a predetermined time zone. A desired time zone for opening or closing is set in advance. With the configuration in which the timer 5 is provided, the self-holding operation of the self-holding circuit 60 can be automatically activated / released in a predetermined time zone, and the self-holding operation is directly operated in the time zone in which the self-holding operation is released. People will be able to safely open and close while checking the shutter.

At this time, the operator can open and close the shutter only while pressing the up and down push button switches 53 and 54, and the up and down push button switches 53 can be opened without pressing the stop push button switch 55. , 54 is released, the motor M is immediately stopped and the shutter opening / closing operation can be immediately interrupted. Therefore, when the shutter is installed in a place where mischief by a child or the like is expected, or in a place where many people come and go, as described above, the timer 5 is set to release the self-holding operation only in a predetermined time period. The shutter can be opened and closed more safely just by putting it on. For this time period, the time period for which safety is to be achieved at the place where the shutter is installed is appropriately selected and set, such as a configuration in which the self-holding operation is released during the day and is operated at night.

[0028]

According to the shutter control panel of the present invention,
The self-holding relay contacts of the self-holding circuit are each provided with a release contact in series. By simply opening and closing the release contact, activation / release of the self-holding operation of power supply to the motor can be arbitrarily selected. Therefore, a single control unit can be used for any operation specification. When the self-holding operation is released, the motor rotates in the same direction only when the operation switch for raising and lowering is pressed, opens and closes the shutter, and immediately stops when the operation switch is released.
The shutter can be easily driven and stopped. Therefore, when the self-holding circuit is released, it is possible to easily and accurately perform fine movements in which the shutter is driven and stopped repeatedly, which facilitates limit setting work and resetting work at the time of shutter installation that differ depending on each installation location. . In addition, in a place where the operator does not need to hold the self-holding device and operates the shutter while directly checking the opening and closing of the shutter, the operator can immediately stop by simply releasing the operating switch for raising and lowering without operating the operating switch for stopping. Therefore, the safety of opening and closing the shutter can be further improved.

Further, as described in claim 3, by providing the releasing contact at a remote location through the connecting line, it is possible to easily perform the selective setting of activation / release of the self-holding operation at this remote location. Become. Moreover, as described in claim 4,
The timer can be used to select whether to activate or release the self-holding operation for each preset time period, so that the release time period of the self-holding circuit can be set. During this time period, the shutter opening / closing operation can be performed immediately in a safe state. It becomes possible to control the opening and closing of the shutter with different operation specifications depending on the time of day and the time of night.

[Brief description of the drawings]

FIG. 1 is a circuit diagram showing a main part of a shutter control panel according to the present invention.

FIG. 2 is a circuit diagram showing another embodiment of the control panel.

FIG. 3 is a circuit diagram showing another embodiment of the control panel.

FIG. 4 is a circuit diagram showing a conventional shutter control panel.

[Explanation of symbols]

1, 2 ... Release contact, 3 ... Connection line, 5 ... Timer, 50 Control panel, 53 ... Ascent push button switch, 54 ... Closing push button switch, 55 ... Stop push button switch, 60 ... Self-holding circuit, 61 ... Opening relay, 62 ... Closing relay, 63,
64 ... Self-holding relay contact.

Claims (4)

[Claims] 1. A control panel for a shutter provided with a self-holding circuit (60) for holding a power supply to a motor for opening and closing a shutter in the operating direction and continuously driving the switch when the switch is operated to move up and down. In the self-holding circuit, a self-holding relay contact (63, 6)
4) A shutter control panel characterized by having openable and closable contacts (1, 2) provided in series respectively. 2. A shutter control panel provided with a self-holding circuit (60) for holding a power supply to a motor for opening and closing the shutter in the operating direction and continuously driving the switch when the switch is operated to move up and down. The switching relays (61, 62) respectively connected to the ascending / descending switches and the switching relays are connected in parallel with the ascending / descending switches, and the contacts are closed by energizing the switching relays. The self-holding relay contacts (63, 64) that continue to supply power to the switching relay and the self-holding relay contacts are arranged in series regardless of the operating states of the up and down switches. , A release contact (1, 1, which can be selectively operated / released by the self-holding relay contact by opening / closing).
A control panel for a shutter characterized by having 2). 3. The release contacts (1, 2) are composed of mechanical operation switches that maintain open / closed states, respectively, and are installed at remote locations outside the control panel via connection lines (3). The control panel for a shutter according to claim 1 or 2, wherein the control panel for the shutter has the following configuration. 4. The shutter according to claim 1 or 2, wherein the releasing contacts (1, 2) are configured to be automatically controlled to be opened and closed in a predetermined time zone preset by a timer (5). control panel.