JP2006307577A - Opening and closing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an opening and closing device capable of neatly stopping an opening/closing body at a roughly full close position even if power failure or noise occurs. <P>SOLUTION: This opening and closing device comprises an encoder device 35 outputting count values in conjunction with the opening/closing operations of the opening/closing body 10, a memory part 41 storing opening/closing body position information variables which are the information on the positions of the opening/closing body 10, an addition/deduction means adding and deducting the count values to and from the opening body position information variables, and a load detection part 36 detecting the load values of the drive source of the opening/closing body 10. The position of the opening/closing body is recognized based on the opening/closing body position information variables stored in the memory part. When the opening and closing device recognizes that the opening/closing body position information variables are abnormal during the closing operation of the opening/closing body 10, the opening/closing body 10 is inverted by a prescribed amount and stopped under the condition that a load value detected by the load detection part exceeds a prescribed load comparison value for determining inversion. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a shutter device including an overhead door, a door, a sliding door including a shutter, a window, a roll screen, a blind, an awning device, a gate, a gate, a sliding wall device, etc. In particular, the present invention relates to an opening / closing device that is preferable for application as a shutter device.

  2. Description of the Related Art Conventionally, an open / close device that recognizes and stops an open / close body at a fully closed position is, for example, a limit linked to the open / close operation of the open / close body (winding shutter S), as described in Patent Document 1. A switch device (27) is provided, and the limit switch device (27) when the opening / closing body (roll-up type shutter S) is positioned at the upper limit position (A), the intermediate desired position (B), and the lower limit position (B). There is one that is stopped by a contact signal emitted from the.

However, according to the above prior art, since it has a structure including a plurality of limit switch mechanisms having a complicated configuration, there is a concern that mechanical malfunction or failure may occur.
Therefore, instead of the above mechanism, an encoder device that outputs a count value in conjunction with the opening / closing operation of the opening / closing body is provided, the count values output from the encoder device are integrated, and whether or not the integrated value exceeds a predetermined value. Thus, a configuration is conceivable in which it is determined whether or not the opening / closing body is in the fully closed position.
However, when trying to stop the opening / closing body at a predetermined fully closed position, due to the inertial force of the opening / closing body, response delay on the control circuit, etc., until the opening / closing body actually stops after the stop command is issued Will take some time. As a result, since the opening / closing body is extended even after the closing direction end of the opening / closing body abuts against the contact target part (for example, floor surface, ground, frame member, etc.), the opening / closing body stops in a loose state. There was a risk of it.
Further, according to the configuration using the encoder device as described above, since the integrated value needs to be stored in a storage device or the like, the integrated value is reduced due to the occurrence of a power failure, the generation of noise in the control circuit, or the like. There is a risk of loss or abnormal values. In such a case, the position of the opening / closing body cannot be recognized by the integrated value, and the opening / closing body cannot be stopped at a predetermined fully closed position.
JP 61-243624 A

  The present invention has been made in view of the above-described conventional circumstances, and the problem is that even if a power failure or noise occurs with a simple structure with few failures and malfunctions and good productivity. The opening / closing body can be stopped at a substantially fully closed position, and the appearance of the opening / closing body when the opening / closing body is substantially fully closed is also provided.

  In order to solve the above problems, in the first invention, an encoder device that outputs a count value in conjunction with an opening / closing operation of the opening / closing body, a memory unit that stores an opening / closing body position information variable that is position information of the opening / closing body, The opening / closing body position information stored in the memory unit, comprising: addition / subtraction means for adding / subtracting the count value to / from the opening / closing body position information variable; and a load detection unit for detecting a load value of a driving source of the opening / closing body. An opening / closing device that recognizes the position of an opening / closing body from a variable, and when the opening / closing body position information variable is recognized as an abnormal value during the closing operation of the opening / closing body, is detected by the load detection unit. The opening / closing body is reversely operated by a predetermined amount and stopped on condition that the load value to be exceeded exceeds a predetermined load comparison value for inversion determination.

  Here, the opening / closing device according to the present invention may be an opening / closing device that partitions or opens a space by the opening / closing body. The opening / closing device may be opened or closed by winding or unwinding the opening / closing body by a winding shaft, It includes a mode in which the body is unwound and stored without being wound up.

  Further, as a preferable specific example of the opening / closing body, a mode in which a plurality of slats and pipes are continuously provided in the opening / closing direction, or a single or a plurality of panels, a sheet-like object, and a net-like object are provided in the opening / closing direction. Aspects, or a mode in which slats, panels, pipes, sheet-like objects, net-like objects, etc. are appropriately combined can be mentioned. Can do.

  The encoder device may be configured to output, for example, a pulse signal generated in association with the opening / closing operation of the opening / closing body as the count value.

  The count value is a value output in conjunction with the opening / closing operation only during the opening / closing operation of the opening / closing body, and is a value added to or subtracted from the opening / closing body position information variable.

  The opening / closing body position information variable is a variable that is handled so as to increase or decrease according to the amount of movement of the opening / closing body. Therefore, the position of the opening / closing body in the opening / closing direction can be recognized from the value of the opening / closing body position information variable.

  The memory unit may be any device that stores the opening / closing body position information variable in a rewritable manner. Specific examples of the memory unit include an EEPROM (Electrically Erasable Programmable Read-Only Memory), a flash memory, Other non-volatile memory, RAM (Random Access Memory), etc. are mentioned.

Further, the addition / subtraction means may be configured to add or subtract the count value with respect to the opening / closing body position information variable stored in the memory unit. A specific example of the addition / subtraction means is a CPU (central Processing apparatus) and other electronic circuits.
The addition / subtraction means adds the count value to the opening / closing body position information variable when the opening / closing body is closed, and when the opening / closing body is opened, the count value is calculated from the opening / closing body position information variable. When the opening / closing body is closed, the count value is subtracted from the opening / closing body position information variable, and when the opening / closing body is opened, the opening / closing body position information variable is subtracted. The aspect etc. which added the said count value are included.

  Further, the load detection unit detects a current value, a voltage value, a rotation speed, and the like from the drive source, and converts the load value from the detected value, a drive shaft of the drive source, and the above It includes a mode (for example, a so-called torque meter) that is provided so as to be mechanically interlocked with a winding shaft for winding the opening and closing body and outputs a load value.

Further, “the opening / closing body position information variable is an abnormal value” means that the opening / closing body position information variable is a numerical value that is not normally handled when the opening / closing body position information variable is lost from the memory unit. It means when it becomes.
That is, since the opening / closing body position information variable is position information of the opening / closing body, it usually indicates position information within a stroke range from the fully open to fully closed state of the open / close body. Therefore, when the opening / closing body position information variable does not exist in the memory unit or when the position information within the stroke range is not indicated, it can be determined that the opening / closing body position information variable is an abnormal value. .
Further, for example, in a configuration in which a winding shaft for winding and unwinding the opening and closing body and its drive source are connected so as to transmit power by a clutch mechanism, the actual opening and closing is performed when the connection is disconnected. Even when the consistency between the body position and the opening / closing body position information variable cannot be obtained, it can be determined that the opening / closing body position information variable is an abnormal value.

The reversal determination load comparison value is a value that is compared with the load value detected by the load detection unit, and is a value for determining whether or not the opening / closing body is reversed.
The inversion determination load comparison value is obtained by, for example, measuring in advance the load value of the driving source when the opening / closing body abuts against a contact target portion (for example, floor surface, ground, frame member, etc.) on the closing direction side. In addition, an appropriate value about the measured value may be set.
That is, when the opening / closing body abuts on the contact target portion, the load value of the drive source increases, so whether or not the load value at the time of the increase exceeds the load determination value for inversion determination, It can be determined whether or not the opening / closing body is in contact with the contact target portion.

  Further, the second invention is characterized in that when it is recognized that a power failure has occurred, it is determined that the opening / closing body position information variable has become an abnormal value.

  Here, in the power failure, when the power supply of the switchgear is cut off, or when the supplied power becomes a voltage value or a current value that is not in a range suitable for the operation of the switchgear (for example, a battery When the remaining amount decreases, when there is a voltage drop, when abnormal voltage, etc.).

  According to a third aspect of the present invention, when the opening / closing body position information variable is not recognized as an abnormal value during the closing operation of the opening / closing body, the opening / closing body position information variable is used for a predetermined full-close determination. On the condition that the variable comparison value has been exceeded, the opening / closing body is stopped without being reversed, and the variable comparison value for full-closed determination is set so that the opening / closing body is substantially fully closed without substantially bumping. It is the value which was made.

  According to a fourth aspect of the present invention, when the opening / closing body is turned over by a predetermined amount as described above and stopped, the opening / closing body position information variable stored in the memory unit is used as the full-close determination variable comparison value. It is characterized in that it is replaced with.

In the present specification, the “opening / closing body width direction” means a direction substantially orthogonal to the opening / closing direction of the opening / closing body and not the thickness direction of the opening / closing body.
Further, in this specification, the “opening / closing direction” means a direction in which the opening / closing body operates to partition or open a space.

Since the present invention is configured as described above, the following effects can be obtained.
According to the first invention, when the opening / closing body is closed, when the opening / closing body position information variable is recognized to be an abnormal value, the load value of the drive source detected by the load detector is predetermined. On the condition that the load comparison value for reversal determination is exceeded, the opening / closing body performs the reversal operation by a predetermined amount and stops.
Therefore, even when the opening / closing body position information variable stored in the memory unit is lost or becomes an abnormal value due to, for example, a power failure or control circuit noise, the opening / closing body is stopped at the substantially fully closed position. be able to.
In addition, after the opening / closing body is brought into contact with a contact target part (for example, a floor surface, the ground, a frame member, etc.), the increase in the load value at that time is recognized, and then the opening / closing body is reversed by a predetermined amount and then stopped. Therefore, the opening / closing body can be prevented from bumping due to contact with the contact target portion, and as a result, the appearance of the opening / closing body when it is substantially fully closed is good.

  Furthermore, according to the second invention, it is possible to easily determine that the opening / closing body position information variable has become an abnormal value.

Further, according to the third invention, when the opening / closing body is closed, if the opening / closing body position information variable is not an abnormal value, the opening / closing body position information variable exceeds the fully closed determination variable comparison value. On that condition, the opening / closing body stops without reversing. At that time, the opening / closing body stops without substantially bumping because the fully closed determination variable comparison value is set in advance so as to eliminate the bumping of the opening / closing body.
Therefore, in a normal state in which no abnormal value is recognized, the opening / closing body can be quickly stopped at a substantially fully closed position without wasteful operation, and the appearance of the opening / closing body at the time of the stop is good.

Further, according to the fourth aspect of the invention, when the opening / closing body stops after a predetermined amount of reversal operation, the abnormal opening / closing body position information variable is replaced with the fully closed determination variable comparison value.
Therefore, in the subsequent operation, the opening / closing body position information variable can be prevented from being recognized as an abnormal value, and the opening / closing position of the opening / closing body can be recognized by the updated opening / closing body position information variable.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
An example according to the present embodiment is arranged in or inside an opening part or inside of a housing such as a house, building, warehouse, factory, underground mall, tunnel, vehicle loading platform, etc., and opens and closes the opening part or partitions the space inside the housing. It will be described as a shutter device that opens and closes.

The opening / closing device 1 includes an opening / closing body 10 that opens and closes by sliding an end portion in the closing direction, and a guide rail 20 that surrounds and guides the opening / closing direction of the opening / closing body 10 in the width direction (left-right direction in FIG. 1). And a winding device 30 for winding and unwinding the opening / closing body 10.
In the opening / closing device 1, the position of the opening / closing body 10 is recognized as an opening / closing body position information variable by the encoder device 35, the control unit 40, and the like disposed in the winding device 30. The load value of the electric drive source 33 that opens and closes the opening / closing body 10 is monitored by a load detection unit 36 disposed therein.

  The opening / closing body 10 constitutes an opening / closing body main body 11 by connecting a plurality of so-called slats formed by bending a horizontally long substantially rectangular metal plate so as to rotate between the vertically adjacent slats. A seat plate member 12 for contacting the contact target site p is connected to the end of the body main body 11 on the closing direction side (lower side in the illustrated example) over the opening / closing body width direction.

  Further, the guide rail 20 has a substantially U-shaped cross section at a portion surrounding an end portion in the width direction of the opening / closing body 10 by processing such as drawing or extrusion forming of an aluminum alloy material, bending processing of a steel plate or other metal plate. It is a member formed in the shape, and is arrange | positioned between the winding device 30 and the contact | abutting object site | part p.

The opening / closing body 10 and the guide rail 20 (non-moving part) configured as described above are locked by the locking mechanism 50 when the opening / closing body 10 is substantially fully closed.
The locking mechanism 50 includes a key bar 51 protruding from the seat plate member 12 of the opening / closing body 10 in the opening / closing body width direction, and an engaged member 52 fixed to the bottom surface of the guide rail 20 to lock the key bar 51. It has.

The key bar 51 is supported so as to be able to protrude and retract on both ends of the seat plate member 12 in the opening / closing body width direction, and is urged in the protruding direction by an elastic member such as a spring.
The key bar 51 is inserted into the opening / closing body 10 by an electric operation using an electric signal from the control unit 40 or a manual operation on an operation unit (not shown) in a state where the opening / closing body 10 is substantially fully closed. It has become.

  Further, the engaged member 52 abuts the inclined surface 52a for getting over the key bar 51 when moving from the opening direction side and the key bar 51 when moving from the closing direction side. The contact surface 52b has a substantially triangular cross section, and according to the illustrated example, it is formed by bending a substantially strip-shaped sheet metal material.

According to the locking mechanism 50 having the above-described configuration, when the opening / closing body 10 is closed, the protruding key bar 51 is pushed by the inclined surface 52a of the engaged member 52 on the near side that is substantially fully closed. When the key bar 51 is gradually submerged and moves over the engaged member 52 in the opening / closing body closing direction with respect to the engaged member 52, the key bar 51 is biased by an elastic member (not shown) and moves in the protruding direction. .
Therefore, even when the opening / closing body 10 is lifted and opened by a malicious third party in the substantially fully closed state of the opening / closing body 10, the opening / closing body 10 is brought into contact with the key bar 51 and the engaged member 52. Can be prevented.
When the user or the like normally opens the opening / closing body 10, the key bar 51 may be immersed by an electric operation using an electric signal from the control unit 40 or a manual operation on an operation unit (not shown).

  In addition, the winding device 30 includes a winding shaft 32 that winds and unwinds the opening / closing body 10 in a storage case 31 in which an opening for allowing the opening / closing body 10 to appear and retract on the lower side, and the winding shaft. An electric drive source 33 that electrically rotates in both directions through a power transmission means such as a chain and a sprocket, and a spring 34 that is contained in the take-up shaft 32 and prevents the opening / closing body 10 from being closed by its own weight. An encoder device 35 that outputs a count value in conjunction with the operation of the electric drive source 33; a load detector 36 that detects a load value of the electric drive source 33; a control unit 40 that controls the electric drive source 33; Yes.

  The electric drive source 33 includes a direct current motor or an alternating current motor, a brake mechanism, and the like, and performs forward rotation, reverse rotation, stop, and the like by a control signal from the control unit 40.

  The encoder device 35 is a general encoder device that outputs a pulse signal every time it rotates by a predetermined amount. The encoder device 35 controls the pulse signal in conjunction with the rotation of the output shaft of the electric drive source 33 or the winding shaft 32. Call 40. This pulse signal is handled as a count value that is added to or subtracted from the opening / closing body position information variable by the control unit 40 described later.

The load detection unit 36 is electrically wired so as to detect the load value of the electric drive source 33 as a current value or a voltage value, and transmits an electric signal corresponding to the magnitude of the load value to the control unit 40.
That is, when the electric drive source 33 is a general DC motor, the amount of change in current value due to the load and the load torque have a substantially proportional correlation. Therefore, in this case, the load value of the electric drive source 33 can be indirectly detected by detecting the amount of change in the current value of the electric drive source 33 by the load detector 36.
When the electric drive source 33 is a general AC motor, the amount of change in the rotational speed due to the load and the load torque have a proportional correlation. Therefore, in this case, the load value of the electric drive source 33 can be indirectly detected by detecting the amount of change in the rotational speed of the electric drive source 33 by the load detector 36.

Further, the control unit 40 is based on a program based on an electrical signal input from the encoder device 35, the load detection unit 36, an operation unit (not shown) (operation BOX, remote controller, computer that generates an operation signal, portable terminal, etc.), and the like. Is a control circuit that performs electronic calculation processing, outputs a control signal corresponding to the processing result to the electric drive source 33, and causes the electric drive source 33 to perform normal rotation, reverse rotation, stop, and the like. A memory unit 41 for storing the opening / closing body position information variable, and addition / subtraction means for adding / subtracting a count value corresponding to the operation amount of the opening / closing body 10 with respect to the opening / closing body position information variable.
In addition, this control part 40 has the structure by the programmed logic circuit which a microcomputer, a programmable controller, etc. used, for example so that a circuit configuration, a setting value for control, etc. can be changed easily according to a field situation etc. However, a wired logic circuit using a relay circuit or other electronic circuit can also be used.

The memory unit 41 may be a rewritable storage device, and may have a mode in which an area for opening / closing body position information variable is secured in the storage unit for storing the program of the control unit 40, etc. An embodiment using a dedicated memory device different from the storage unit may be used.
The addition / subtraction means is an electronic addition / subtraction circuit. When the control unit 40 is a microcomputer, a programmable controller, or the like, the CPU (central processing unit) may be used.

Next, an example of processing by the control unit 40 will be described in detail based on a flowchart.
The flowchart shown in FIG. 2 shows a reset operation for setting the opening / closing body position information variable of the memory unit 41 to an initial value at the reference position of the opening / closing body 10 (substantially fully open position in the illustrated example).
First, the control unit 40 determines whether or not a predetermined reset operation has been performed after the power is turned on (step 11). The reset operation includes, for example, an operation for opening and closing following a power-on operation, an operation of pressing a fully-closed button and a fully-open button (not shown) multiple times, an operation of simultaneously pressing the release button and the closing button, and a power-on operation. This is a special operation set in advance, such as a combined operation (in other words, a configuration in which a reset operation is performed by a power-on operation).

When the reset operation is performed, an operation command is issued to the electric drive source 33 to open the opening / closing body 10 (step 12). When the reset operation is not performed, an operation (not shown) is performed. Even if there is a signal (full open signal, full close signal, intermediate open signal, etc.) for opening / closing the opening / closing body 10 from the unit, the signal is ignored (step 13).
That is, when a predetermined reset operation is not performed after the power is turned on, a normal opening / closing operation is not performed.
The load value (specifically, load current) is monitored by the load detection unit 36 and the control unit 40 of the electric drive source 33 that is opening the opening / closing body 10 in Step 12.

  The control unit 40 determines whether or not the load value exceeds a predetermined full-open determination load comparison value (step 14). If the load value exceeds the predetermined full-open determination load comparison value, the opening / closing body 10 is set to the full-open position. If it is determined that there is, the process proceeds to the next step 15; otherwise, the process of step 14 is performed again.

That is, when the opening operation of the opening / closing body 10 is continued, the seat plate member 12 of the opening / closing body 10 comes into contact with the opening (such as a lintel member) of the winding device 30 and the rotation of the electric drive source 33 is forced. Since it is stopped, the load value of the electric drive source 33 rises rapidly and exceeds the fully open determination load comparison value.
According to the step 14, the control unit 40 determines that the operating opening / closing body 10 serves as the reference position according to whether or not the load value detected by the load detection unit 36 exceeds the full open determination load comparison value. It is determined whether or not the fully opened position is reached.

  After step 14 described above, in the next step 15, power supply to the electric drive source 33 is cut off. That is, the electric drive source 33 is turned off immediately after the load value suddenly increases due to the opening / closing body 10 being in the fully open position.

In step 16, the opening / closing body position information variable stored in the memory unit 41 is reset to an initial value.
The opening / closing body position information variable is a variable indicating the position of the opening / closing body 10 in the opening / closing direction. According to an example of the present embodiment, the opening / closing body 10 is set to an initial value (for example, 0) when the opening / closing body 10 is in the fully open position. It is a variable that increases as the body 10 moves in the closing direction.

Next, based on the flowchart shown in FIG. 3, the process by the control part 40 at the time of the closing operation of the opening-closing body 10 is demonstrated.
First, in step 21, it is monitored whether or not there is a closing signal from an operation unit (not shown). If there is a closing signal, the process proceeds to step 22 and the opening / closing body 10 is closed. If so, continue to monitor the closure signal.
During the closing operation of the opening / closing body 10, the count value input from the encoder device 35 is added to the opening / closing body position information variable stored in the memory unit 41. Therefore, the opening / closing body position information variable of the memory unit 41 indicates the opening / closing position of the opening / closing body 10.

In step 23, it is determined whether or not the power failure flag is ON. If it is ON, the process proceeds to the next step 24. If not, the process proceeds to step 24 ′ described later.
The power failure flag is information indicating that a power failure has occurred in the past and the power has been restored, and is stored in the storage area of the control unit 40 as a variable such as 1 or 0.
That is, in this step 23, when a power failure has occurred in the past and the power has been restored, it is recognized that the opening / closing body position information variable has become an abnormal value due to the power failure, and the process proceeds to the next step 24. If not, the process proceeds to step 24 ′.

In step 24, it is determined whether or not the load value detected by the load detector 36 exceeds a predetermined inversion determination load comparison value. If it exceeds, the process proceeds to the next step 25; The process returns to step 23.
The load determination value for inversion determination is a constant for determining whether or not the opening / closing body 10 is in contact with the contact target portion p by comparing with the load value of the electric drive source 33.
That is, when the opening / closing body 10 contacts the contact target portion p, the load value detected by the load detection unit 36 increases. It is determined whether or not the opening / closing body 10 has come into contact with the contact target portion p based on whether or not the load value at the time of the increase is larger than the load comparison value for inversion determination.
This inversion determination load comparison value is a value that is appropriately set in advance according to the size and weight of the opening / closing body 10, the capacity of the electric drive source 33, and the like, and is stored in the storage area of the control unit 40.

In the next step 25, the opening / closing body 10 is temporarily stopped by the control of the electric drive source 33, and immediately after that, the reversing operation is performed by a predetermined amount.
The predetermined amount (inversion operation amount) is appropriately set to such an extent that the looseness of the opening / closing body 10 is eliminated by contact with the contact target portion p.
This amount of reversal movement is a value experimentally obtained in advance, for example, according to full stroke data (width data from a substantially fully open position to a substantially fully closed position) of the opening / closing body 10, other data, and the like. A value stored in advance in the storage area of the control unit 40 may be selected as appropriate, or may be automatically calculated according to the data or the like.
Further, whether or not the opening / closing body 10 has been reversed by the predetermined amount in the step 25 may be determined by a change amount of the opening / closing body position information variable after the inversion or by an elapsed time after the inversion. Also good.

In the next step 26, the reversing operation of the opening / closing body 10 is stopped, for example, by turning off the power to the electric drive source 33.
Therefore, the opening / closing body 10 in the stopped state is in a state in which the end in the closing direction is substantially in contact with the contact target portion p, and the looseness is substantially eliminated.

  Next, in step 27, the opening / closing body position information variable stored in the memory unit 41 is replaced with a fully closed determination variable comparison value.

The fully closed determination variable comparison value is a state in which the opening / closing body 10 is not substantially bumpy, and a state in which there is substantially no gap between the closing direction end portion of the opening / closing body 10 and the contact target portion p. This is a value for judging by comparing with the opening / closing body position information variable.
This fully closed determination variable comparison value is a value experimentally obtained in advance, and is used for full stroke data (width data from a substantially fully open position to a substantially fully closed position) of the opening / closing body 10 and other data. Accordingly, a value stored in advance in the storage area of the control unit 40 may be appropriately selected, or may be automatically calculated according to the data or the like.

According to the step 27, the opening / closing body position information variable determined as the abnormal value in the step 23 is replaced with the fully closed determination variable comparison value, so that it is treated as a substantially normal value thereafter. .
For this reason, in the next step 28, the power failure flag is turned OFF.

In step 24 ′, if the opening / closing body position information variable exceeds the fully closed determination variable comparison value, the process proceeds to the next step 25 ′, and if not, the process returns to step 23. .
That is, when it is determined in step 23 that the power failure flag is OFF (in other words, there was no power failure), the opening / closing body position information variable is determined to be a substantially normal value. It is determined whether or not the opening / closing body 10 is substantially fully closed based on the normal opening / closing body position information variable.
Note that step 24 ′ is replaced with step 24 described above, and it is also possible to determine whether or not the opening / closing body 10 is substantially fully closed based on the load value of the electric drive source 33 even when the power failure flag is OFF. is there.

In the next step 25 ′, the closing operation of the opening / closing body 10 is stopped, for example, by turning off the power source of the electric drive source 33.
Then, the processing flow in the case of the closing operation ends.

Next, processing by the control unit 40 when the opening / closing body 10 is opened will be described based on the flowchart shown in FIG.
First, in step 31, it is monitored whether or not there is an open signal from an operation unit (not shown). If there is an open signal, the process proceeds to step 32 and the opening / closing body 10 is opened. If so, continue to monitor for the presence of an open signal.
During the opening operation of the opening / closing body 10, the count value input from the encoder device 35 is subtracted from the opening / closing body position information variable stored in the memory unit 41. Therefore, the opening / closing body position information variable of the memory unit 41 indicates the opening / closing position of the opening / closing body 10.

In step 33, it is determined whether or not the power failure flag is ON. If it is ON, the process proceeds to the next step 34. If not, the process proceeds to step 34 'described later.
That is, in this step 33, if a power failure has occurred in the past and the power supply has been restored, it is recognized that the opening / closing body position information variable has become an abnormal value due to the power failure, and the process proceeds to the next step 34. If not, the process proceeds to step 34 '.

In step 34, it is determined whether or not the load value detected by the load detection unit 36 exceeds a predetermined full-open determination load comparison value. If it exceeds, the process proceeds to the next step 35; Is returned to step 33.
The fully open determination load comparison value is a constant for determining whether or not the opening / closing body 10 is substantially fully open by comparing with the load value of the electric drive source 33. That is, when the opening / closing body 10 is substantially fully opened and the seat plate member 12 of the opening / closing body 10 abuts against the lintel portion of the storage case 31, the load value detected by the load detection unit 36 increases. It is determined whether or not the opening / closing body 10 is substantially fully open depending on whether or not the load value at the time of the increase is larger than the load comparison value for full opening determination.
The full open determination load comparison value is a value that is appropriately set in advance according to the size and weight of the opening / closing body 10, the capacity of the electric drive source 33, and the like, and is stored in the storage area of the control unit 40.

  In the next step 35, the power supply to the electric drive source 33 is shut off, and the opening / closing body 10 during the opening operation is stopped at the substantially fully opened position.

  Next, in step 36, the opening / closing body position information variable stored in the memory unit 41 is replaced with a full-open determination variable comparison value.

  The fully open determination variable comparison value is a value for determining that the opening / closing body 10 is in the substantially fully open position by comparing with the opening / closing body position information variable. It is a value for determining that the seat plate member 12 is in contact with the lintel portion of the storage case 31 and the opening / closing body 10 is substantially fully open, and is experimentally obtained in advance.

According to the above step 36, the opening / closing body position information variable determined as the abnormal value in the above step 33 is replaced with the fully open determination variable comparison value, so that it is treated as a substantially normal value thereafter.
For this reason, in the next step 37, the power failure flag is turned OFF.

In step 34 ′, when the opening / closing body position information variable exceeds the fully open determination load comparison value, the process proceeds to the next step 35 ′. Otherwise, the process returns to step 33.
That is, when it is determined in step 33 that the power failure flag is OFF (in other words, there was no power failure), the opening / closing body position information variable is determined to be a substantially normal value. Based on the information variable, it is determined whether or not the opening / closing body 10 is substantially fully opened.
Note that step 34 ′ is replaced with step 34 described above, and even when the power failure flag is OFF, whether or not the opening / closing body 10 is substantially fully opened is determined based on the load value of the electric drive source 33. Is possible.

In the next step 35 ′, the opening operation of the opening / closing body 10 is stopped, for example, by turning off the power source of the electric drive source 33.
Then, the processing flow in the case of the opening operation ends.

According to the above embodiment, when the power failure flag is ON, it is determined that the opening / closing body position information variable is an abnormal value. However, as another preferable example, the power failure flag is ON. When the opening / closing body position information variable is a value within a predetermined range, it may be determined that the opening / closing body position information variable is a normal value.
That is, since the opening / closing body position information variable is the position information of the opening / closing body 10, in a normal case, the opening / closing body position information variable should indicate a value corresponding to the case where the opening / closing body 10 is positioned within the entire stroke range. Therefore, when the opening / closing body position information variable does not indicate a value corresponding to the entire stroke range, it is determined that the opening / closing body position information variable has become an abnormal value due to control circuit noise or other causes. Can do.

  In addition, in the flowcharts shown in FIGS. 2 to 4, in order to explain the present invention in a concise and clear manner, the control operation such as when the opening / closing body 10 is stopped halfway due to obstacle detection or stop operation is omitted. Of course, such a control operation is possible.

It is a schematic diagram which shows an example of the switchgear concerning this invention. It is a flowchart which shows the process by the control part at the time of initial setting the opening-and-closing body position information variable in the switchgear. It is a flowchart which shows the process by the control part in the case of performing the closing operation | movement of an opening / closing body in the opening / closing apparatus. It is a flowchart which shows the process by the control part in the case of opening / closing an opening / closing body in the same opening / closing apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1: Opening / closing device 10: Opening / closing body 20: Guide rail 30: Winding device 33: Electric drive source 35: Encoder device 36: Load detection part 40: Control part 41: Memory part 36: Load detection part

Claims (4)

An encoder device that outputs a count value in conjunction with an opening / closing operation of the opening / closing body, a memory unit that stores an opening / closing body position information variable that is position information of the opening / closing body, and the count value for the opening / closing body position information variable An opening / closing apparatus comprising an addition / subtraction means for adding / subtracting and a load detection unit for detecting a load value of a driving source of the opening / closing body, wherein the opening / closing body position is recognized from the opening / closing body position information variable stored in the memory unit. Because
When the opening / closing body position information variable is recognized as an abnormal value during the closing operation of the opening / closing body, the load value detected by the load detection unit exceeds a predetermined load determination value for inversion determination. An opening / closing apparatus characterized in that the opening / closing body is reversed by a predetermined amount and stopped on the condition.   2. The switchgear according to claim 1, wherein when it is recognized that a power failure has occurred, the switch body position information variable is determined to be an abnormal value. If it is not recognized that the opening / closing body position information variable is an abnormal value during the closing operation of the opening / closing body, the opening / closing body position information variable has exceeded a predetermined full-close determination variable comparison value. As a condition, stop the above opening / closing body without reversing it,
3. The switchgear according to claim 1 or 2, wherein the full-close determination variable comparison value is a value that is set so that the switch body is substantially fully closed without substantially bumping.   When the opening / closing body is turned over by a predetermined amount as described above and stopped, the opening / closing body position information variable stored in the memory unit is replaced with the full-close determination variable comparison value. The switchgear according to claim 3.

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