JP7702805B2 - Opening/closing body device and method for controlling the opening/closing body device - Google Patents

Description

The present invention relates to an opening/closing body device and a control method for the opening/closing body device that are configured to separate openings in structural bodies, including buildings such as houses, buildings, factories, warehouses, and garages, using opening/closing bodies such as shutters, and in particular to an opening/closing body device and a control method for the opening/closing body device that are suitable for utilizing important historical information about the opening/closing body device, such as abnormal fluctuations in the load torque of an opening/closing machine that electrically operates the opening/closing body.

Opening and closing body devices such as shutter curtains are installed at the entrances and windows of structural bodies including houses, buildings, factories, warehouses, garages, and other buildings, or at openings such as internal passages and spaces, and the openings are opened and closed by moving the opening and closing body. This opening and closing body device is configured to unfold and lower from the top of the opening an opening and closing body such as a slat curtain made of many rectangular slat materials, a pipe grill curtain made of many pipe materials connected with link materials, a panel curtain made of one panel material or many connected panels, a net curtain made of a net material, a sheet curtain made of a sheet material made of synthetic resin or cloth fiber, or a composite curtain made of a composite material of these materials, etc., to close the entire opening. In many cases, the opening and closing body of such opening and closing body devices is opened and closed electrically. Examples of electrically operated opening and closing body devices include an electric shutter device, an electric door device, and an electric awning device.

In general, an electric opening and closing body device raises and lowers an opening and closing body for opening and closing an opening and closing space of a structure such as a building, and the opening and closing body is driven by an opening and closing machine (motor, etc.) installed in the ceiling of the structure or in the shutter case. To ensure safety, such an electric opening and closing body device is usually provided with an obstacle detection device that detects obstacles that exist in the opening and impede the operation of the opening and closing body, and is structured to stop the operation of the opening and closing body during descent when an obstacle detection signal is generated from the obstacle detection device.

Some of these electric opening and closing devices are designed to record the obstacle detection signal from the obstacle detection device as history information and display it on a display device as necessary, in order to identify the cause of the malfunction during repair or maintenance work when a breakdown occurs. For example, Patent Document 1 discloses an opening and closing device with a history display mode.

If the history information indicates that there is a sign of an abnormality or that an abnormality has occurred, the operation is limited to a "push-through operation" in which operation can be performed only by continuously pressing the push button of the operation switch, improving safety and informing the operator of any abnormal signs or occurrences. For example, Patent Document 2 discloses a method of controlling an opening and closing body that employs a push-through operation.

JP 2020-7764 A JP 2020-183625 A

The load torque of the opening/closing device (motor, etc.) that electrically operates the opening/closing body increases suddenly, for example, when the opening/closing body gets caught on something while rising, and also increases gradually due to aging caused by long-term use. Therefore, when determining the signs of abnormality or the occurrence of an abnormality in the opening/closing body device, it is necessary to consider abnormal fluctuations in the load torque of the opening/closing device as important historical information.
On the other hand, limiting driving operations to push-through operation when there are signs of an abnormality or when it is determined that an abnormality has occurred is not user-friendly for the operator.In addition, it was necessary to take into consideration the operation of externally connected devices such as obstacle detection devices, which trigger the restriction of driving operations to push-through operation, when designing the system.

The present invention was made in consideration of the above points, and aims to prevent a decline in operability while ensuring safety by utilizing important historical information of the opening and closing device when there are signs of an abnormality or an abnormality occurs.

The first feature of the opening/closing body device of the present invention is that it comprises an opening/closing means provided on the periphery of the opening, an opening/closing machine for electrically operating the opening/closing means, a control means for driving the opening/closing machine and electrically controlling the operation of the opening/closing means, and a detection means for detecting the load torque of the opening/closing machine and outputting a detection signal to the control means, and the control means has a recording means for recording the detection information of the load torque by the detection means as historical information, and gradually reduces the operating speed of the opening/closing means according to the contents of the historical information recorded in the recording means.

The detection signal output from the detection means to the control means includes detection information indicating the value of the load torque of the switchgear.
The control means records the load torque detection information by the detection means as historical information in the recording means, and gradually reduces the operating speed of the opening/closing means depending on the content of the historical information.By utilizing the historical information to reduce the operating speed of the opening/closing means when there are signs of an abnormality or an abnormality has occurred, safety is ensured and deterioration of operability is suppressed compared to the conventional case where driving operation is uniformly limited to push-through operation.
In addition, by reducing the operating speed of the opening and closing means, signs of an abnormality or the occurrence of an abnormality are made known to the operator, and there is no need to design the vehicle taking into account the operation of externally connected devices such as obstacle detection devices that may trigger the restriction of driving operations to push-through operations.

The opening and closing means is composed of opening and closing members such as shutter curtains that electrically open and close openings such as entrances and windows, or internal passageways and spaces in structures such as buildings, including houses, buildings, factories, warehouses, and garages. When the opening and closing means is a shutter curtain, it is stored in the upper part, which is one of the peripheral parts of the opening in a building, and the shutter curtain passes through a lintel or the like and descends, electrically opening and closing the opening. In addition, the opening and closing means may be stored in the lower part of the opening and electrically open and close using an upward movement method, or the opening and closing means may be stored in the side and electrically move using a sliding movement method. Also, the opening and closing means may include those that can fully close the opening when closed, and those that cannot.

The second feature of the opening/closing device of the present invention is that, in the opening/closing device described in the first feature, it is provided with an obstacle detection device that detects an obstacle present in the opening and outputs a detection signal to the control means, and the control means records the obstacle detection information by the obstacle detection device as history information in the recording means, and gradually reduces the operating speed of the opening/closing means according to the occurrence frequency of the history information recorded in the recording means.

The detection signal output from the obstacle detection device to the control means includes detection information indicating that an obstacle present in the opening has been detected.
The control means records the obstacle detection information by the obstacle detection device in the recording means as historical information, and gradually reduces the operating speed of the opening/closing means depending on the frequency of occurrence of the historical information.By using the historical information to reduce the operating speed of the opening/closing means when there are signs of an abnormality or an abnormality has occurred, safety is ensured and deterioration of operability is suppressed compared to the conventional case where driving operation is uniformly limited to push-through operation.
In addition, by reducing the operating speed of the opening and closing means, signs of an abnormality or the occurrence of an abnormality are made known to the operator, and there is no need to design the vehicle taking into account the operation of externally connected devices such as obstacle detection devices that may trigger the restriction of driving operations to push-through operations.

The third feature of the opening/closing body device of the present invention is that, in the opening/closing body device described in the first or second feature, a safety device is provided that detects over-winding or over-releasing of the opening/closing means, activates, and outputs an activation signal to the control means, and the control means records the activation information of the safety device in the recording means as history information, and gradually reduces the operating speed of the opening/closing means according to the frequency of occurrence of the history information recorded in the recording means.

The activation signal output from the safety device to the control means includes activation information indicating that the safety device has been activated.
The control means records the operation information of the safety device in the recording means as historical information, and gradually reduces the operating speed of the opening/closing means depending on the frequency of occurrence of the historical information. By utilizing the historical information to reduce the operating speed of the opening/closing means when there are signs of an abnormality or an abnormality has occurred, safety is ensured and deterioration of operability is suppressed compared to the conventional case where driving operation is uniformly limited to push-through operation.
In addition, by reducing the operating speed of the opening and closing means, signs of an abnormality or the occurrence of an abnormality are made known to the operator, and there is no need to design the vehicle taking into account the operation of externally connected devices such as obstacle detection devices that may trigger the restriction of driving operations to push-through operations.

A fourth feature of the opening/closing body device of the present invention is that, in the opening/closing body device described in the first, second, or third feature, the control means records changes in the operating speed of the opening/closing means as history information in the recording means, and is equipped with an input device for an operator to input an instruction to display the history information recorded in the recording means, and a display device for displaying the history information recorded in the recording means, and the control means causes the display device to display the history information recorded in the recording means in response to the instruction input to the input device.
The operator can easily determine the cause of the malfunction from the historical information displayed on the display device, such as detection information for the load torque of the opening and closing machine, detection information for obstacles, operation information for safety devices, and changes in the operating speed of the opening and closing means.

A first feature of the control method for an opening/closing body device of the present invention is that it is a control method for an opening/closing body device comprising an opening/closing means provided on the peripheral portion of an opening, an opening/closing machine for electrically operating the opening/closing means, a control means for driving the opening/closing machine and electrically controlling the operation of the opening/closing means, and a detection means for detecting the load torque of the opening/closing machine and outputting a detection signal to the control means, wherein the control means is provided with a recording means for recording detection information of the load torque by the detection means as historical information, and the control means gradually reduces the operating speed of the opening/closing means depending on the content of the historical information recorded in the recording means.
This is a control method for an opening/closing body device, which corresponds to the opening/closing body device described in the first aspect.

A second feature of the control method for an opening/closing body device of the present invention is that, in the control method for an opening/closing body device described in the first feature, an obstacle detection device is provided which detects an obstacle present in the opening and outputs a detection signal to a control means, the detection information of the obstacle by the obstacle detection device is recorded in a recording means as historical information, and the operating speed of the opening/closing means is gradually reduced by the control means depending on the occurrence frequency of the historical information recorded in the recording means.
This is a control method for an opening/closing body device, which corresponds to the opening/closing body device described in the second aspect.

A third feature of the control method for an opening/closing body device of the present invention is that, in the control method for an opening/closing body device described in the first or second feature, a safety device is provided which detects over-winding or over-releasing of the opening/closing means, activates, and outputs an activation signal to the control means, the operation information of the safety device is recorded in a recording means as historical information, and the control means gradually reduces the operating speed of the opening/closing means depending on the frequency of occurrence of the historical information recorded in the recording means.
This is a control method for an opening/closing body device, which corresponds to the opening/closing body device described in the third aspect.

A fourth feature of the control method for an opening/closing body device of the present invention is that, in the control method for an opening/closing body device described in the first, second, or third feature, changes in the operating speed of the opening/closing means are recorded in a recording means as history information, an input device is provided for an operator to input an instruction to display the history information recorded in the recording means, and a display device is provided for displaying the history information recorded in the recording means, and the history information recorded in the recording means is displayed on the display device in response to the instruction input to the input device.
This is a control method for an opening/closing body device, which corresponds to the opening/closing body device described in the fourth aspect.

According to the present invention, by utilizing important historical information of the opening and closing device, when there are signs of an abnormality or an abnormality occurs, it is possible to prevent a decrease in operability while ensuring safety.

1 is a diagram showing a schematic configuration of a shutter device which is an opening/closing body device according to an embodiment of the present invention; 2 is a diagram illustrating the operation of each device in the shutter device shown in FIG. 1 . FIG. 2 is a diagram showing a circuit configuration of a control device for a shutter device according to an embodiment of the present invention. 10 is a flowchart showing an example of an operation for changing the operating speed of the shutter curtain in accordance with the load torque of a motor. 10 is a flowchart showing an example of an operation for changing the operating speed of the shutter curtain in accordance with the frequency of occurrence of a detection signal from an obstacle detection device. 10 is a flowchart showing an example of an operation for changing the operating speed of the shutter curtain in accordance with the frequency of occurrence of an activation signal for the safety device.

A preferred embodiment of an opening/closing body device according to the present invention will now be described with reference to the attached drawings. In this embodiment, a shutter device equipped with a shutter curtain that opens and closes vertically will be described as an example of an opening/closing means. Figure 1 is a diagram showing the schematic configuration of a shutter device, which is an opening/closing body device according to one embodiment of the present invention. In Figure 1, the opening/closing body device 10 is a shutter device that opens and closes the opening of an entrance and exit vertically.

The opening/closing device 10 is installed at the opening of a building, and basically comprises a shutter case 11, a shutter curtain 12, guide rails 13, 14, a winding shaft 15, a chain 16, a motor 17, a position detection device 172, a control device 18, an obstacle detection device 185, an operation switch 19, a power supply device 20, a load torque detection device 30, a safety device 40, an input device 50, and a display device 60.

Normally, this opening/closing body device 10 drives the motor 17, which is an opening/closing machine, in response to the operation of the operating switch 19 to control opening and closing. Furthermore, in this opening/closing body device 10, the shutter curtain 12 is held in an open state, with the shutter curtain 12 wound up on the winding shaft 15, by a mechanical holding mechanism (not shown), and if an emergency signal BS indicating a fire or the like is input from the outside to the control device 18 in this open state, the holding mechanism releases the open state, and the shutter curtain 12 naturally descends under its own weight, automatically closing the opening.

The guide rails 13 and 14 are provided on both ends of the building opening so as to contact both ends of the shutter curtain 12, and are made of a metal member or an equivalent member having a guide groove with a U-shaped cross section that spans from the lintel to the floor. The shutter curtain 12 rises and falls along the guide grooves of the guide rails 13 and 14, opening and closing the opening.

The winding shaft 15 is rotatably mounted on both ends of the shutter case 11, and winds and unwinds the shutter curtain 12. The chain 16 connects a driving sprocket mounted on the rotating shaft of the motor 17 to a driven sprocket mounted on the rotating shaft of the winding shaft 15. Therefore, the rotational driving force of the motor 17 is transmitted to the winding shaft 15 via the chain 16, and when the motor 17 rotates, the winding shaft 15 rotates via the chain 16, controlling the opening and closing of the shutter curtain 12.

In this embodiment, a DC motor is used as the motor 17 .
The motor 17 is provided with a position detector 172 (see FIG. 2) for detecting its rotational position, i.e., the open/closed position and open/closed state of the shutter curtain 12. This position detector 172 is composed of a pulse generating rotary encoder or the like. A pulse signal corresponding to the rotation of the motor 17 is output to the control device 18, so that the control device 18 calculates the rotational position of the motor 17 and the position of the tip of the shutter curtain 12 on the closing side at the opening based on the generation status of this pulse.

The control device 18 is configured as a microcomputer, and is supplied with power from the commercial power line AC via the power supply device 20. The control device 18 controls the rotation of the motor 17 based on control signals corresponding to the operation states of the operation buttons on the operation switch 19, detection signals from the load torque detection device 30, detection signals from the obstacle detection device 185, activation signals from the safety device 40, and signals from the position detection device 172 provided on the motor 17, and releases the holding mechanism based on an emergency signal BS.

The operation switch 19 has an up (open) button 19A, a stop (stop) button 19B, and a down (close) button 19C as control switches corresponding to the opening, closing, and stopping operations, and outputs a control signal according to the operation state of each of these buttons to the control device 18. Although not shown in FIG. 1, the control device 18 may also be operable by a wireless remote control device.

The emergency signal BS is a 24V signal supplied from an external control room in the event of an emergency such as a fire, and is input to a harm prevention interlocking relay (not shown) in the control device 18. In addition to or instead of the input of the emergency signal BS from the outside, a temperature sensor may be provided inside the shutter case 11 near the opening of the lintel, i.e., the part where the shutter curtain 12 rises and falls. This temperature sensor may be configured to be a high-temperature bimetal thermostat with an automatic reset type B contact whose contacts are always on and open and turn off when the contacts reach a specified temperature (any temperature between 100 and 300 degrees Celsius), and when the contacts are open, a signal indicating that a fire has occurred may be output as a signal equivalent to the emergency signal BS.

The obstacle detection device 185 has a transmitter mounted on the lower end (seat plate) of the shutter curtain 12. When an obstacle is detected, it transmits a detection signal corresponding to the movement of the built-in seat plate switch to the control device 18, and is configured to transmit a return signal when the seat plate switch moves to its original position after the obstacle is removed.
The detection signal output from the obstacle detection device 185 to the control device 18 includes detection information indicating that an obstacle existing in the opening has been detected.
The transmission of the signal from the transmitter of the obstacle detection device 185 to the control device 18 is not limited to the wired system as shown in the figure, but may be a wireless system that operates using a battery as a power source. Also, a seat switch that moves when an obstacle comes into contact with it may be provided at the lower end of the shutter curtain 12, and a tape switch provided along the height direction of the guide rails 13, 14 may be pressed by the moving force of the seat when the obstacle comes into contact, or a detection signal may be output by wire from the tape switch to the control device 18. In addition, a photoelectric tube, LED, or other light emitting/receiving sensor may be provided at the opening, and an obstacle may be detected without contact by image recognition, etc.

The power supply device 20 receives AC power from a power line AC of a commercial power source, converts the AC power into DC power, and supplies the DC power to the control device 18 .
In this embodiment, the power supply device 20 is installed outside the shutter case 11 , but the power supply device 20 may be installed inside the shutter case 11 .

The load torque detection device 30 detects the load torque of the motor 17 and outputs a detection signal to the control device 18 .
The detection signal output from the load torque detection device 30 to the control device 18 includes detection information indicating the value of the load torque of the motor 17 .
In the motor 17 , which is a DC motor, the load current and the load torque have a substantially proportional correlation, so the load torque detection device 30 detects the load torque of the motor 17 by detecting the load current of the motor 17 .

The safety device 40 is a contact-type mechanical detection device that is usually installed inside the shutter case 11. It activates by detecting over-rolling of the shutter curtain 12 or sagging due to over-extension of the shutter curtain 12, and outputs an activation signal to the control device 18.
The activation signal output from the safety device 40 to the control device 18 includes activation information indicating that the safety device 40 has been activated.
When the control device 18 receives an activation signal from the safety device 40, it stops the operation (raising or lowering) of the shutter curtain 12. Therefore, the safety device 40 also plays a role in preventing the shutter curtain 12 from falling.
The safety device 40 may be an optical non-contact detection device.

Fig. 2 is a diagram for explaining the operation of each device in the shutter device shown in Fig. 1. The control device 18 controls the motor 17 using power supplied from the power supply device 20, based on signals from the operation switch 19, the load torque detection device 30, the obstacle detection device 185, the safety device 40, and the position detection device 172, as well as the emergency signal BS.
In FIG. 2, the connection relationship of the commercial power source to components other than the control device 18 is omitted.

3 is a diagram showing a circuit configuration of a control device for a shutter device according to an embodiment of the present invention. The control device 18 of this embodiment includes a motor drive circuit 18a, a CPU 18b, and a memory 18c.
The motor drive circuit 18a is composed of an IPM (Intelligent Power Module: high-performance power semiconductor element) driver and the like, and outputs DC power supplied from the power supply device 20 to the control device 18 to the motor 17 under the control of the CPU 18b to drive the motor 17.

The CPU 18b controls the driving of the motor 17 by the motor driving circuit 18a. At that time, the CPU 18b varies the voltage of the DC power applied from the motor driving circuit 18a to the motor 17 to control the rotation speed of the motor 17, thereby changing the operation speed of the shutter curtain 12.
Furthermore, the CPU 18b records, as history information, in the memory 18c, the detection information of the load torque of the motor 17 contained in the detection signal of the load torque detection device 30, the obstacle detection information contained in the detection signal of the obstacle detection device 185, and the operation information of the safety device 40 contained in the operation signal of the safety device 40. Then, the CPU 18b changes the operating speed of the shutter curtain 12 based on each piece of history information recorded in the memory 18c, as will be described below with reference to Figures 4, 5, and 6.

FIG. 4 is a flowchart showing an example of an operation for changing the operating speed of the shutter curtain in accordance with the load torque of the motor.
First, the CPU 18b judges whether or not the load torque has exceeded 170% of a predetermined value based on the detected load torque information recorded in the memory 18c (step 401).
If the load torque exceeds 170% of the predetermined value, the CPU 18b sets the operation of the shutter curtain 12 to be limited to the push-through operation (step 402).Then, the CPU 18b records the fact that the operation of the shutter curtain 12 has been limited to the push-through operation as history information in the memory 18c together with the implementation date and time, and returns to the beginning of the flow.

If the load torque does not exceed 170% of the predetermined value in step 401, the CPU 18b determines whether the load torque exceeds 150% of the predetermined value (step 403).
If the load torque exceeds 150% of the predetermined value, the CPU 18b sets the operation speed of the shutter curtain 12 to be reduced by 50% (step 404).Then, the CPU 18b records the fact that the operation speed of the shutter curtain 12 has been reduced by 50% as history information in the memory 18c together with the date and time of the reduction, and returns to the beginning of the flow.

If it is determined in step 403 that the load torque does not exceed 150% of the predetermined value, the CPU 18b determines whether or not the load torque exceeds 130% of the predetermined value (step 405).
If the load torque exceeds 130% of the predetermined value, the CPU 18b sets the operation speed of the shutter curtain 12 to be reduced by 30% (step 406).Then, the CPU 18b records the fact that the operation speed of the shutter curtain 12 has been reduced by 30% as history information in the memory 18c together with the date and time of the reduction, and returns to the beginning of the flow.

If the load torque does not exceed 130% of the predetermined value in step 405, the CPU 18b determines whether the shutter curtain 12 was previously operating in a state in which its operation was limited to a push-through operation in step 402, or whether the shutter curtain 12 was previously operating in a state in which its operation speed was reduced in step 404 or 406 (step 407). If the shutter curtain 12 was operating in a normal operation and at a normal operation speed, the operation speed is not changed.

If the vehicle was operating with the shutter curtain 12 restricted to a push-through operation, the CPU 18b lifts the restriction on the push-through operation of the shutter curtain 12, or if the vehicle was operating with the shutter curtain 12's operation speed reduced, the CPU 18b lifts the reduction in the operation speed of the shutter curtain 12 (step 408). The CPU 18b then records the lifting of the reduction in the operation speed of the shutter curtain 12 as history information in the memory 18c together with the date and time of the lifting, and returns to the beginning of the flow.

According to the example shown in Figure 4, the control device 18 records the load torque detection information by the load torque detection device 30 as historical information in the memory 18c, and gradually reduces the operating speed of the shutter curtain 12 depending on the content of the historical information. By using the historical information to reduce the operating speed of the shutter curtain 12 when there are signs of an abnormality or an abnormality has occurred, safety is ensured and deterioration of operability is suppressed compared to the conventional case where driving operation is uniformly limited to push-through operation.
Furthermore, the operating speed of the shutter curtain 12 is reduced, thereby informing the operator of signs of an abnormality or the occurrence of an abnormality.

In addition, the load torque judgment value, such as 170%, 150%, or 130% of a predetermined value, and the rate at which the operating speed of the shutter curtain 12 is reduced can be set as appropriate, without being limited to the example in Figure 4.
Furthermore, the operating speed of the shutter curtain 12 is not limited to two stages, but may be reduced in one stage or in three or more stages.

FIG. 5 is a flow chart showing an example of an operation for changing the operating speed of the shutter curtain in accordance with the frequency of occurrence of a detection signal from an obstacle detection device.
The CPU 18b first judges whether or not a new sensing signal has been generated by the obstacle sensing device 185 (step 501). If a new sensing signal has not been generated, step 501 is repeated until a new sensing signal is generated.

When a new detection signal is generated, the CPU 18b stops the shutter curtain 12 that is descending and maintains the stopped state of the shutter curtain 12, or raises the shutter curtain 12 to the upper limit position and then stops it, maintaining the stopped state of the shutter curtain 12 at the upper limit position. The CPU 18b then records the detection information of the generated detection signal as history information in the memory 18c together with the date and time of its generation.
The CPU 18b, which has recorded the sensing information in the memory 18c as history information, judges whether the current sensing information is within a predetermined period T1 from the immediately previous recorded sensing information (step 502).
If the current sensing information is within a predetermined period T1 from the immediately preceding recorded sensing information, the CPU 18b sets the operation speed of the shutter curtain 12 to be reduced by 60% (step 503).Then, the CPU 18b records the fact that the operation speed of the shutter curtain 12 has been reduced by 60% as history information together with the date and time of the reduction in memory 18c, and then releases the stopped state of the shutter curtain 12 according to a predetermined release condition, and returns to step 501.

In step 502, if the current sensing information is not within the predetermined period T1 from the previously recorded sensing information, the CPU 18b does not change the operating speed of the shutter curtain 12, but releases the stopped state of the shutter curtain 12 in accordance with the predetermined stop release condition, and returns to step 501.

In step 503, after setting the operating speed of the shutter curtain 12 to be reduced by 60%, the CPU 18b determines whether the period during which the operating speed of the shutter curtain 12 is reduced has reached a predetermined release time R1 (A->step 504).
If the period during which the operating speed of the shutter curtain 12 is being reduced has not reached the predetermined release time R1, step 504 is repeated until the release time R1 is reached.
When the period during which the operating speed of the shutter curtain 12 is reduced reaches a predetermined release time R1, the CPU 18b releases the reduction in the operating speed of the shutter curtain 12 (step 505). Then, the CPU 18b records the release of the reduction in the operating speed of the shutter curtain 12 as history information in the memory 18c together with the date and time of the release, and returns to step 501.

In addition, a manual release switch may be provided to instruct the cancellation of the reduction in operating speed, and instead of determining whether the release time R1 has been reached in step 504, or in addition to determining whether the release time R1 has been reached, the reduction in operating speed may be cancelled (step 505) by determining whether the release switch has been operated.

According to the example shown in FIG. 5, the control device 18 records the obstacle detection information by the obstacle detection device 185 as historical information in the memory 18c, and gradually reduces the operating speed of the shutter curtain 12 depending on the frequency of occurrence of the historical information. By utilizing the historical information to reduce the operating speed of the shutter curtain 12 when there are signs of an abnormality or when an abnormality has occurred, safety is ensured and deterioration of operability is suppressed compared to the conventional case where driving operations are uniformly limited to push-through operations.
Furthermore, the operating speed of the shutter curtain 12 is reduced, thereby informing the operator of signs of an abnormality or the occurrence of an abnormality.

The rate at which the operation speed of the shutter curtain 12 is reduced is not limited to the example shown in FIG. 5, and can be set appropriately.
Furthermore, the operating speed of the shutter curtain 12 is not limited to being reduced in one step, but may be reduced in two or more steps.

FIG. 6 is a flowchart showing an example of an operation for changing the operating speed of the shutter curtain in accordance with the frequency of occurrence of an activation signal for the safety device.
The CPU 18b first judges whether or not a new activation signal has been generated for the safety device 40 (step 601). If a new activation signal has not been generated, step 601 is repeated until a new activation signal is generated.

When a new activation signal is generated, the CPU 18b stops the operation (raising or lowering) of the shutter curtain 12 and maintains the stopped state. Then, the CPU 18b records the activation information of the generated activation signal as history information in the memory 18c together with the date and time of its generation.
The CPU 18b, which has recorded the operation information in the memory 18c as history information, judges whether the current operation information is within a predetermined period T2 from the immediately previous recorded operation information (step 602).
If the current operation information is within a predetermined period T2 from the immediately preceding recorded operation information, the CPU 18b sets the operation speed of the shutter curtain 12 to be reduced by 70% (step 603).Then, the CPU 18b records the fact that the operation speed of the shutter curtain 12 has been reduced by 70% as history information together with the implementation date and time in the memory 18c, and then releases the maintenance of the stopped state of the shutter curtain 12 according to a predetermined stop release condition, and returns to step 601.

In step 602, if the current operation information is not within the predetermined period T2 from the previously recorded operation information, the CPU 18b does not change the operating speed of the shutter curtain 12, but releases the stopped state of the shutter curtain 12 in accordance with the predetermined stop release condition, and returns to step 601.

The predetermined period T2 used in step 602 may be the same length as the predetermined period T1 used in step 502 of FIG. 5, or may be a different length.

In step 603, after setting the operating speed of the shutter curtain 12 to be reduced by 70%, the CPU 18b determines whether the period during which the operating speed of the shutter curtain 12 is reduced has reached a predetermined release time R2 (B → step 604).
If the period during which the operating speed of the shutter curtain 12 is being reduced has not reached the predetermined release time R2, step 604 is repeated until the release time R2 is reached.
When the period during which the operating speed of the shutter curtain 12 is reduced reaches a predetermined release time R2, the CPU 18b releases the reduction in the operating speed of the shutter curtain 12 (step 605). Then, the CPU 18b records the release of the reduction in the operating speed of the shutter curtain 12 as history information in the memory 18c together with the date and time of the release, and returns to step 601.

Note that the predetermined release time R2 used in step 604 may be the same length as the release time R1 used in step 504 of FIG. 5, or may be a different length.

Also, a manual release switch may be provided to instruct the cancellation of the reduction in operating speed, and instead of determining whether the release time R2 has been reached in step 604, or in addition to determining whether the release time R2 has been reached, the reduction in operating speed may be cancelled (step 605) by determining whether the release switch has been operated.

According to the example shown in Figure 6, the control device 18 records the operation information of the safety device 40 as historical information in the memory 18c, and gradually reduces the operating speed of the shutter curtain 12 depending on the frequency of occurrence of the historical information. By utilizing the historical information to reduce the operating speed of the shutter curtain 12 when there are signs of an abnormality or an abnormality has occurred, safety is ensured and deterioration of operability is suppressed compared to the conventional case where driving operations are uniformly limited to push-through operations.
Furthermore, the operating speed of the shutter curtain 12 is reduced, thereby informing the operator of signs of an abnormality or the occurrence of an abnormality.

The rate at which the operation speed of the shutter curtain 12 is reduced is not limited to the example shown in FIG. 6, and can be set appropriately.
Furthermore, the operating speed of the shutter curtain 12 is not limited to being reduced in one step, but may be reduced in two or more steps.

3, the input device 50 is, for example, a keyboard or a touch panel, and is operated by an operator to input an instruction to display the history information recorded in the memory 18c. The display device 60 is, for example, a liquid crystal display device, and displays the history information recorded in the memory 18c. The CPU 18b causes the display device 60 to display the history information recorded in the memory 18c in response to the instruction input to the input device 50.
The operator can easily determine the cause of the malfunction from historical information displayed on the display device 60, such as detection information for the load torque of the motor 17, obstacle detection information, operation information for the safety device 40, and changes in the operating speed of the shutter curtain 12.

In the embodiment described above, a DC motor is used as motor 17, and the operating speed of the shutter curtain 12 is changed by varying the voltage applied to motor 17. However, it is also possible to use an AC motor as motor 17, and change the operating speed of the shutter curtain 12 by varying the frequency of the AC power applied to motor 17 using an inverter device or the like.
In this case, in a typical AC motor, the load torque and the load rotation speed have a proportional correlation, so that the load torque of the motor 17 can be detected by detecting the load rotation speed of the motor 17.

The opening/closing device of the present invention can also be applied to, for example, shutter devices, window shutter devices, blind devices, roller screen devices, curtain devices, movable partition devices, sliding door devices, swing door devices, folding door devices, gate devices, awning devices, waterproof board devices, etc.

10... Opening and closing body device 11... Shutter case 12... Shutter curtain 13, 14... Guide rail 15... Winding shaft 16... Chain 17... Motor 172... Position detection device 18... Control device 18a... Motor drive circuit 18b... CPU
18c...Memory 185...Obstacle detection device 19...Operation switch 19A...UP (open) button 19B...STOP (stop) button 19C...DOWN (close) button 20...Power supply device 30...Load torque detection device 40...Safety device 50...Input device 60...Display device

Claims (2)

An opening/closing means provided on the periphery of the opening;
An opening/closing device for electrically operating the opening/closing means;
A control means for driving the opening/closing device to electrically control the operation of the opening/closing means;
an operation switch for operating the opening/closing means with respect to the control means;
A detection means for detecting a load torque of the switchgear and outputting a detection signal to the control means ;
a safety device that detects excessive winding or unwinding of the opening/closing means, and operates to output an operation signal to the control means ;
The control means has a recording means for recording the detection information of the load torque by the detection means as historical information, and gradually reduces the operating speed of the opening/closing means using a plurality of predetermined values as judgment values for the load torque depending on the content of the historical information recorded in the recording means, and when the load torque exceeds the largest judgment value from the detection information of the load torque recorded as the historical information, limits the operation of the opening/closing means by the operating switch to a push-through operation , and records operation information of the safety device in the recording means as historical information, and gradually reduces the operating speed of the opening/closing means depending on the frequency of occurrence of the historical information recorded in the recording means. An opening/closing means provided on the periphery of the opening;
An opening/closing device for electrically operating the opening/closing means;
A control means for driving the opening/closing device to electrically control the operation of the opening/closing means;
an operation switch for operating the opening/closing means with respect to the control means;
A control method for an opening/closing body device comprising: a detection means for detecting a load torque of the opening/closing machine and outputting a detection signal to the control means,
a control means for recording information on the load torque detected by the detection means as history information, and the control means reduces the operating speed of the opening/closing means in stages using a plurality of predetermined values as load torque judgment values in accordance with the contents of the history information recorded in the recording means, and when the load torque exceeds the largest judgment value based on the load torque detection information recorded as the history information, limits the operation of the opening/closing means by the operation switch to a push-through operation ;
Furthermore, a safety device is provided which detects excessive winding or unwinding of the opening/closing means, operates, and outputs an operation signal to the control means;
A method for controlling an opening/closing body device, characterized in that operation information of the safety device is recorded in the recording means as historical information, and the control means gradually reduces the operating speed of the opening/closing means depending on the frequency of occurrence of the historical information recorded in the recording means.

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