JP2013217056A - Opening/closing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve durability of an opening/closing body by preventing accuracy of opening/closing body position control from being reduced.SOLUTION: An opening/closing device comprises an opening/closing body 10 which performs an opening/closing operation between a full opening position and a full closing position, a guide rail 20 which guides the opening/closing body 10 in an opening/closing direction, an origin sensor 35 which senses that the opening/closing body 10 has passed a predetermined origin position, and count means 36 which recognizes a variation of the opening/closing body 10 from the origin position as a count value. In the opening/closing device, the origin position is set closer to a closing direction side than the full opening position and closer to an opening direction side than the full closing position and when there is a sensing signal of the origin sensor, the count value is corrected to an operation origin value indicating the origin position.

Description

  The present invention relates to an opening / closing device that is disposed in or inside an opening or a structure of a structure such as a house, a building, a warehouse, a factory, an underground mall, a tunnel, or a loading platform of a vehicle, and partitions or opens the opening or the internal space. It is.

Conventionally, in this type of invention, as described in Patent Document 1, left and right guide rails, a sheet-like opening / closing body that is guided between these guide rails to open / close, and this opening / closing body is driven up / down An opening / closing machine that is provided on the opening / closing body, and an upper limit stopper that is disposed at an open upper limit position of the opening / closing body to contact the protrusion. There is a sheet shutter in which the open / close body is opened and closed between a fully closed position and a fully opened position.
In this prior art, when the opening / closing body rises to the fully open position and the protrusion abuts on the upper limit stopper and the load on the opening / closing machine rises, the increase in the load is detected and the opening / closing body is opened. When stopping, the operating origin value of the opening / closing body is automatically corrected, and when the opening / closing body is fully closed, the opening / closing body is closed by a predetermined stroke amount from the corrected operation origin value as described above. And try to stop.

However, in the sheet shutter as described above, the change in rigidity and elongation of the opening / closing body due to temperature is larger than that of a metal shutter or the like. For this reason, even if the operation origin value is corrected at the time of the fully opened stop as described above, the seat plate may hang down slightly in the fully opened state, or a gap may be generated between the opening / closing body and the floor surface in the fully closed state. There is. More specifically, for example, the opening / closing body is stretched and stretched when fully opened, and the operation origin value is corrected at that time, and when the closing operation is performed thereafter, the opening / closing body contracts in the vertical direction to return to the original state. When fully closed, there may be a gap between the closing direction end of the opening and closing body and the floor surface.
Further, since the opening / closing body is strongly pulled when fully opened, the life of the opening / closing body may be reduced.

Japanese Patent Laid-Open No. 2008-169584

  This invention makes it an example of a subject to cope with the said conventional situation. That is, it is an object of the present invention to prevent the accuracy of the opening / closing body position control from being lowered and to improve the durability of the opening / closing body.

  One means for solving the above problems is an opening / closing body that opens and closes between a fully open position and a fully closed position, a guide rail that guides the opening / closing body in the opening / closing direction, and the opening / closing body has a predetermined origin position. In an opening / closing device comprising an origin sensor that senses passage and a counting means that recognizes a change amount of the opening / closing body from the origin position as a count value, the origin position is closer to the closing direction than the fully opened position. In addition, it is set to the opening direction side from the fully closed position, and when there is a detection signal of the origin sensor, the count value is corrected to an operation origin value indicating the origin position. .

  Since the present invention is configured as described above, the object of the present invention can be achieved, such as preventing the accuracy of the position control of the opening / closing body from being lowered and improving the durability of the opening / closing body. .

It is a front view which shows an example of the switchgear concerning this invention. It is a block diagram which shows the control part etc. of the switchgear. It is a flowchart at the time of initial setting. It is a flowchart at the time of normal operation. It is a flowchart at the time of a full closure. It is a flowchart at the time of a full open.

In order to implement the present invention, in the first embodiment, an opening / closing body that opens and closes between a fully open position and a fully closed position, a guide rail that guides the opening / closing body in an opening / closing direction, and the opening / closing body has a predetermined origin. An opening / closing apparatus comprising: an origin sensor that senses passage of a position; and a counting unit that recognizes a change amount of the opening / closing body from the origin position as a count value. The origin position is closer to the closing direction than the fully opened position. In this case, the count value is set to the opening direction side with respect to the fully closed position, and when there is a detection signal of the origin sensor, the count value is corrected to the operation origin value indicating the origin position.
According to this configuration, the origin sensor outputs a sensing signal when the opening / closing body passes the origin position closer to the closing direction than the fully opened position and closer to the opening direction than the fully closed position. When there is a detection signal from the origin sensor, the count value is corrected to an operation origin value indicating the origin position.
Therefore, for example, it is possible to prevent a tension load from being applied to the opening / closing body during the origin correction and causing the opening / closing body to stretch. As a result, it is possible to prevent the opening / closing body from hanging down in the fully opened state and the gap between the opening / closing body and the floor surface in the fully closed state due to the extension of the opening / closing body during the origin correction. Thus, the accuracy of the opening / closing body position control can be improved. In addition, the durability of the opening / closing body can be prevented from being lowered by repeatedly pulling the opening / closing body.

In the second embodiment, the origin position is set on the opening direction side of the center of the opening / closing stroke from the fully open position to the fully closed position of the opening / closing body.
According to this configuration, the origin position is corrected at a position where the opening / closing body is unlikely to contact an obstacle or the like. That is, it is possible to prevent the origin correction from being hindered by an obstacle interfering with the opening / closing body.

In a third aspect, when there is a detection signal of the origin sensor, it is determined whether or not the count value is within a predetermined range. If the count value is within the predetermined range, the count value is set to the operation origin value. Corrected, otherwise recognized as abnormal.
According to this configuration, when there is a detection signal from the origin sensor, it is possible to recognize the presence or absence of an abnormality.For example, when the origin sensor is a counter type limit switch and tooth skipping occurs, Can be recognized.

  In the fourth mode, as a preferred specific mode, the origin sensor continues to output the first signal when the opening / closing body is on the opening direction side with respect to the origin position, and the opening / closing body has the same origin. When it is on the closing direction side with respect to the position, it is configured to continue the output of the second signal instead of the first output, and the output of the origin sensor is changed from the first signal to the second signal. When changed or when the second signal is changed to the first signal, the count value at the time of the change is corrected to the operation origin value.

In the fifth embodiment, in the fourth embodiment, when the opening / closing body position recognized by the count value is on the opening direction side with respect to the origin position and there is no first signal, or by the count value When the recognized opening / closing body position is on the closing direction side with respect to the origin position and there is no second signal, it is recognized as abnormal.
According to this configuration, the abnormality can be recognized by the relationship between the position of the opening / closing body and the presence or absence of the first signal or the second signal.For example, a short circuit of the electric wire of the origin sensor, disconnection of the connector, disconnection, etc. When there is, it can be recognized as abnormal.

In the sixth embodiment, in the fifth embodiment, the abnormality is recognized in the fully open position when there is no first signal, and the abnormality is recognized in the fully closed position when there is no second signal. I did it.
According to this configuration, it is possible to prevent the abnormality recognition from being performed during the opening / closing operation of the opening / closing body. For example, it is possible to prevent the opening / closing body from stopping during the opening / closing due to the abnormality recognition.

In the seventh embodiment, when the opening / closing body position recognized by the count value is on the opening direction side with respect to the origin position and there is no first signal, the opening / closing body position recognized by the count value is Different abnormalities are recognized when there is no second signal on the closing direction side with respect to the origin position.
According to this configuration, for example, when there is no first signal on the opening direction side with respect to the origin position, it is recognized as a short circuit of the wire of the origin sensor, and the second signal on the closing direction side with respect to the origin position. When there is no error, it is possible to recognize different types of abnormalities such as recognizing that the origin sensor is disconnected or disconnected.

In addition, the above-described part of the embodiments can be an independent invention that does not include a part of the configuration of the embodiment described above.
That is, one of the independent inventions is an opening / closing body that opens and closes between a fully open position and a fully closed position, a guide rail that guides the opening / closing body in the opening / closing direction, and the opening / closing body has a predetermined origin position. In an opening / closing apparatus comprising an origin sensor that senses passing and a counting means that recognizes a change amount from the origin position of the opening / closing body as a count value, when there is a sensing signal of the origin sensor, It is determined whether or not the count value is within a predetermined range. If the count value is not within the predetermined range, it is recognized that an abnormality has occurred.
According to the present invention, when there is a detection signal from the origin sensor, it is possible to recognize whether there is an abnormality. For example, when the origin sensor is a counter-type limit switch and tooth skipping occurs, Can be recognized.

As another independent invention, an opening / closing body that opens and closes between a fully open position and a fully closed position, a guide rail that guides the opening / closing body in the opening / closing direction, and the opening / closing body passes a predetermined origin position. An opening / closing apparatus comprising an origin sensor that senses the occurrence of the occurrence and a counting means that recognizes a change amount of the opening / closing body from the origin position as a count value. When the opening / closing body is on the closing direction side with respect to the same origin position, the output of the second signal is changed to the first output. An open / close body that is configured to continue and is recognized by the count value when the position of the open / close body is on the open direction side with respect to the origin position and there is no first signal or when the open / close body is recognized by the count value The position is the origin position If there is no second signal a closing direction side quasi was to recognize abnormal.
According to the present invention, the abnormality can be recognized by the relationship between the position of the opening and closing body and the presence or absence of the first signal or the second signal. For example, a short circuit of the electric wire of the origin sensor, disconnection of the connector, disconnection, etc. When there is, it can be recognized as abnormal.

  In the present specification, the “opening / closing body thickness direction” means the thickness direction of the opening / closing body in the closed state. The “opening / closing body width direction” means a direction orthogonal to the opening / closing direction of the opening / closing body and not the thickness direction of the opening / closing body. In addition, the “opening / closing body opening / closing direction” means a direction in which the opening / closing body slides to open / close an opening or a space.

  Hereinafter, a particularly preferred embodiment of the above embodiment will be described in detail based on the drawings.

FIG. 1 shows an example of a switchgear according to the present invention.
The opening / closing device A includes an opening / closing body 10 that partitions and opens a space by sliding in the vertical direction, a guide rail 20 that guides the opening / closing body 10 in the opening / closing direction on both the left and right sides thereof, and the opening / closing body 10 in the opening direction. And an accommodating portion 30 that winds and unwinds by an upward winding body 31 (see FIG. 1).

  The opening / closing body 10 includes a main body sheet portion 11 that partitions substantially the entire surface of the housing opening when fully closed, and a seat plate member 12 connected to the lowermost end portion of the main body sheet portion 11.

The main body sheet portion 11 is, for example, a flame retardant fabric such as glass cloth or silica cloth, a vinyl chloride resin sheet material subjected to fluorine processing, a synthetic resin sheet material containing glass fiber, etc. It is composed of a flexible sheet material that is fire resistant (including flame retardant).
The seat plate member 12 is connected to the lower end of the main body seat portion 11 over substantially the entire length in the width direction of the opening / closing body 10, and is brought into contact with the seating target portion P (floor surface, lower frame, ground, etc.) by the opening / closing body 10. While making the closing property good, the main body sheet portion 11 is pulled downward by its own weight to prevent the main body sheet portion 11 from being bent or wrinkled.
The seat plate member 12 is configured, for example, by forming a cross-sectional bag-shaped portion at the lower end of the main body sheet portion 11 and having a weight body in the bag-shaped portion.

Obstacle sensing means (not shown) for sensing that the lower end of the opening / closing body 10 during the closing operation is in contact with the obstacle X is provided at the lower end of the seat plate member 12 as necessary. The obstacle sensing means may be, for example, a tape switch provided inside the bag-like portion and at the lower end of the weight body in the opening / closing body width direction. This tape switch is a switch having a known structure that outputs a sensing signal when it receives a pressing force from below at any position in the longitudinal direction, and the sensing signal is transmitted to the control unit in the storage unit 30 by wire or wirelessly. Configured to transmit to 34.
As another example of the obstacle sensing means, a movable seat plate that is movable in the vertical direction is provided at the lower end of the seat plate member 12, and the movement of the movable seat plate is detected by a contact type or non-contact type sensor. It is also possible to adopt a mode or the like.

  The guide rail 20 is a member having a substantially U-shaped cross section or a substantially concave section surrounding the end of the opening / closing body 10 in the width direction of the opening / closing body, and is elongated between the seating target portion P and the storage portion 30. Is provided.

  The storage unit 30 includes, in a storage case 32, a substantially cylindrical winding body 31, a switch 33 that transmits a rotational force to the winding body 31 via a power transmission mechanism such as a chain or a gear, A controller 34 that controls the rotation of the opening / closing machine 33, an origin sensor 35 that senses that the opening / closing body 10 has passed a predetermined origin position, and a change amount of the opening / closing body 10 from the origin position is recognized as a count value. Counting means 36. The storage unit 30 winds or unwinds the opening / closing body 10 by the winding body 31, thereby storing the opening / closing body 10 in the storage case 32 and feeding the opening / closing body 10 out of the storage case 32. To do.

  The opening / closing machine 33 is, for example, an electric motor. An origin sensor 35 that senses that the opening / closing body 10 has passed a predetermined origin position and a counting means 36 that recognizes a change amount from the origin position of the opening / closing body 10 as a count value are connected to the switch 33. ing.

The origin sensor 35 outputs a contact signal when the count value of the mechanical counter (not shown) that rotates in synchronization with the rotating portion of the output shaft of the switch 33 and the counter reaches a predetermined value. And a limit switch (not shown) that is electrically connected to the control unit 34 via a connector 35a (see FIG. 2).
In this embodiment, the origin sensor 35 continues to output the OFF signal (first signal) when the lower end of the opening / closing body 10 is above the origin position, and the lower end of the opening / closing body 10 is the origin. When the position is below the position, the output of the OFF signal is stopped and the output of the ON signal (second signal) is continued. The OFF signal and the ON signal may be non-voltage signals for contact opening and contact closing, but may be voltage signals.
The origin position is closer to the closing direction than the fully open position at which the flange portion (not shown) of the lower end of the seat plate member 12 of the opening / closing body 10 contacts the lintel portion (not shown) of the storage portion 30; The seat plate member 12 of the opening / closing body 10 is set to the opening direction side with respect to the fully closed position where the seat plate member 12 is seated on the seating target portion P. Particularly preferably, as shown in the drawing, the lower end of the opening / closing body 10 is set to the fully open position and the fully closed position. The opening / closing stroke (the height dimension of ON and OFF in FIG. 1) between the storage portion 30 and the vicinity of the storage portion 30 (more preferably 50 to 70 mm below the storage portion 30). ).

The counting means 36 may be a device that counts the amount of rotation of a rotating portion such as the output shaft of the opening / closing device 33 by an encoder, a hall sensor, or the like, and outputs the count value. More specifically, the counting means 36 is configured to count a pulse signal output with rotation of the drive shaft of the switch 33 and output the count value.
The count value counted by the counting means 36 changes with the opening / closing operation of the opening / closing body 10 and is treated as a value indicating the position of the opening / closing body 10 in the opening / closing direction.
In this embodiment, the counting means 36 subtracts the count value with the closing operation of the opening / closing body 10 and adds the count value with the opening operation of the opening / closing body 10 (see FIG. 1). .
As another example of the counting means 36, it is possible to add the count value with the closing operation of the opening / closing body 10 and subtract the count value with the opening operation of the opening / closing body 10. is there.

  Further, as shown in FIG. 2, the control unit 34 is an electronic circuit (a so-called microcomputer circuit or the like) that causes the central processing unit (CPU) to function based on a program, and includes an operation switch 37 and operation means (remote control, Close command, open command, stop command, ON / OFF signal (first signal / second signal) input from the origin sensor 35, count means 36 A count value or the like input from the computer is electronically processed based on a program, and a control signal corresponding to the processing result is output to the switch 33 to cause the switch 33 to rotate forward, reverse, stop, etc. The operation origin value and the count value stored in the storage device are corrected.

  The operation switch 37 has three push buttons: an open button for opening the opening / closing body 10, a close button for closing the opening / closing body 10, and a stop button for stopping the opening / closing operation of the opening / closing body 10. A switch having According to the illustrated example, each of the open button and the close button is an automatic return a contact, but the signal when the open button and the close button are pressed is self-held by the program of the control unit 34. Yes. The stop button is an automatic return b-contact, and when the stop button is pressed, the self-holding state of the open button and the stop button is released.

Next, the control operation of the opening / closing device A will be described in detail with reference to FIGS.
First, the flow of the initial setting mode will be described. In the following operation examples, it is assumed that the opening / closing body 10 is in a fully open state in the initial state.
In step 1, the control unit 34 determines whether or not there is an initial setting command by a special operation set in advance (for example, simultaneously pressing and holding the open button and the close button of the operation switch 37). If there is a command, the initial setting mode is maintained and the process proceeds to the next step 2; otherwise, the process jumps to step 4.

In step 2, it waits for the signal from the origin sensor 35 to change from the OFF signal (first signal) to the ON signal (second signal). If the signal changes to the ON signal, the process proceeds to the next step 3. .
That is, after the initial setting operation, when the closing button of the operation switch 37 is pressed, the opening / closing body 10 is closed from the fully opened state, and when the lower end of the opening / closing body 10 passes the origin position (see FIG. 1), At the time of passage, the signal of the origin sensor 35 changes from the OFF signal to the ON signal, and the processing of the next step 3 is executed.

In step 3, the operation origin value is set to an initial value.
Here, the operation origin value is a value indicating a position serving as a reference for counting by the counting means 36 and is a variable for indicating that the closing direction end of the opening / closing body 10 is at the origin position. Stored in the storage unit 34.
The initial value is a value that is appropriately set according to an opening / closing stroke from the fully open position to the fully closed position of the opening / closing body 10, and may be a value recorded in advance in the storage device of the control unit 34. Alternatively, it may be a value input in the field by operating a numeric keypad (not shown). In the example of FIG. 1, the initial value is 6000.
After step 3, the counting means 36 uses the operation origin value set in step 3 as a reference for counting. In other words, when the end of the opening / closing body 10 in the closing direction passes through the origin position in the closing direction, the count value of the counting means 36 is set to the initial value (for example, 6000).

  In step 4, the initial setting mode is completed and the normal operation mode is entered. In the normal operation mode, the opening / closing body 10 can be opened / closed and stopped by operating the operation switch 37 or the like.

Next, the flowchart of the normal operation mode shown in FIG. 4 will be described.
First, in step 11, the control unit 34 waits for the signal of the origin sensor 35 to change from the OFF signal to the ON signal. If the signal changes to the ON signal, the process proceeds to the next step 12.
That is, for example, when the opening / closing body 10 is closed by the operation of the closing switch and the opening / closing body 10 passes the origin position in the closing direction, the signal of the origin sensor 35 changes from the OFF signal to the ON signal. The process proceeds to 12. In the present embodiment, when the opening / closing body 10 passes through the origin position in the opening direction, no special processing is performed.

In step 12, it is determined whether or not the count value by the counting means 36 is within a predetermined range. If it is within the predetermined range, the process proceeds to the next step 13; otherwise, the process proceeds to step 14.
Here, the predetermined range is a numerical range that is preset and stored in the storage device of the control unit 34. For example, a value obtained by subtracting a specified value from the operation origin value set in Step 3 above. And the value obtained by adding the specified values.
The prescribed value is set in consideration of variations in the count value when the count means 36 outputs the count value at the transition of the pulse signal and variations in the count value due to noise.

In step 13, the count value of the counting means 36 is reset to the operation origin value set in step 3.
That is, even when the opening / closing operation of the opening / closing body 10 is repeated, the count value of the counting means 36 at the origin position is theoretically the value set in step 3 (6000 in the illustrated example). However, there is a case where the value set in step 3 is deviated due to an output at the change of the pulse or the influence of noise. Therefore, in step 13, even if the count value deviates as described above, if the deviation amount is within the predetermined range, the count value is set to the operation origin value set in step 3 (6000 according to the illustrated example). ).

In step 14, it is recognized as an abnormality, and the closing operation of the opening / closing body 10 is stopped by stopping the opening / closing machine 33. At this time, an alarm may be output by voice or light emission, or an abnormal signal may be transmitted to the outside.
The abnormality in step 14 can be presumed to be caused by, for example, tooth skipping of the counter switch that constitutes the origin sensor 35 because the count value of the count means 36 is relatively large.
When this abnormality is recognized, the inspection is normally performed, and after the repair of the abnormal part is completed, the operation in the normal operation mode is returned to a state where the operation can be performed by a reset operation (not shown).

Next, the operation when the opening / closing body 10 is fully closed will be described with reference to the flowchart of FIG.
When the opening / closing body 10 is closed by operating the closing switch of the operation switch 37, the control unit 34 waits for the count value of the counting means 36 to be equal to or less than a predetermined fully closed position value (step 21). If it is less than the value, the process proceeds to the next step 22.
Here, the fully closed position value is a value indicating that the end in the closing direction of the opening / closing body 10 has contacted the seating target site P, and corresponds to the full opening / closing stroke of the opening / closing body 10 with respect to the operation origin value. It is a value obtained by subtracting the predetermined value. For example, in the example shown in FIG. 1, the fully closed position value is set to 1000.

  In step 22, the closing operation of the opening / closing body 10 is stopped by stopping the opening / closing machine 33, and the process proceeds to the next step 23.

  According to steps 21 to 22, since the opening / closing body 10 can be stopped without sensing a load when fully closed, the opening / closing body 10 is pressed too much against the seating target site P, and the opening / closing body 10 is bent or wrinkled. Can be prevented.

  In step 23, it is determined whether or not the signal of the origin sensor 35 is an ON signal. If the signal is an ON signal, the process proceeds to step 24; otherwise, the process proceeds to step 25.

  In step 24, the normal operation mode is maintained. That is, a state in which the opening / closing operation and stop of the opening / closing body 10 and the transition to the initial setting mode can be performed by a subsequent operation or the like is maintained.

In step 25, it is recognized as an abnormality, and for example, the opening / closing operation of the opening / closing body 10 is disabled. As another example of the process at the time of abnormality recognition, an alarm may be output by voice or light emission, or an abnormality signal may be transmitted to the outside.
The abnormality in step 25 is an abnormality that the signal of the origin sensor 35 does not become an ON signal in a situation where the signal of the origin sensor 35 is normally an ON signal (second signal). It can be inferred that the connector 35a (see FIG. 2) connecting the electric wire to the control unit 34 is disconnected or poorly connected, the electric wire is broken, or the like.
When this abnormality is recognized, the inspection is normally performed, and after the repair of the abnormal part is completed, the operation in the normal operation mode is returned to a state where the operation can be performed by a reset operation (not shown).

Next, the operation when the opening / closing body 10 is fully opened will be described along the flowchart of FIG.
When the opening / closing body 10 is opened by operating the opening switch of the operation switch 37, the control unit 34 waits for the count value of the counting means 36 to be equal to or greater than a predetermined fully opened position value (step 31), and the fully closed position value. If so, the process proceeds to the next step 32.
Here, the fully opened position value is a value indicating that the opening / closing body 10 has fully opened the opening between the seating target portion P and the storage portion 30, and is from the origin position to the operation origin value. This is a value obtained by adding a count value corresponding to the dimension up to the storage unit 30. For example, in the example shown in FIG. 1, the fully open position value is set to 8000.

In step 32, the opening / closing body 10 is stopped by stopping the opening / closing machine 33, and the process proceeds to the next step 33.
According to steps 31 to 32, since the opening / closing body 10 can be stopped without sensing a load when fully opened, it is possible to prevent the opening / closing body 10 from being pulled and extended.

  In step 33, it is determined whether or not the signal of the origin sensor 35 is an OFF signal. If the signal is an OFF signal, the process proceeds to step 34, and if not, the process proceeds to step 35.

In step 35, it is recognized as an abnormality, and for example, the opening / closing operation of the opening / closing body 10 is disabled. As another example of the process at the time of the abnormality recognition, an alarm may be output by voice or light emission, or an abnormality signal may be transmitted to the outside.
The abnormality in step 35 is an abnormality that the signal of the origin sensor 35 does not become an OFF signal in a situation where the signal of the origin sensor 35 is normally an OFF signal (first signal). It can be estimated that the electric wire is short-circuited (see FIG. 2).
When this abnormality is recognized, the inspection is normally performed, and after the repair of the abnormal part is completed, the operation in the normal operation mode is returned to a state where the operation can be performed by a reset operation (not shown).

Therefore, according to the opening / closing device A configured as described above, it is possible to prevent a tensile load from being applied to the opening / closing body 10 during the origin correction as in the prior art, and the opening / closing body 10 from being stretched. Therefore, due to the extension of the opening / closing body 10 at the time of origin correction, the seat plate member 12 of the opening / closing body 10 hangs down from the lower end of the storage unit 30 in the fully opened state, or the opening / closing body 10 and the seating target site P in the fully closed state. It is possible to prevent a gap from being generated between them, and to improve the accuracy of opening / closing body position control. In addition, since the tensile load is not applied to the opening / closing body 10 when the opening is stopped, it is possible to prevent the durability of the opening / closing body 10 from being lowered.
Further, the type of abnormality can be roughly distinguished depending on whether the abnormality is recognized when passing through the origin position, when fully closed, or when fully opened.

  According to the above embodiment, the origin sensor 35 is constituted by a mechanical counter switch. As another example of the origin sensor 35, the rotation amount of the rotating portion is set to a predetermined value using an encoder, a hall sensor, or the like. A mode of outputting a signal when the position is reached, a mode of detecting and outputting a signal by detecting the opening / closing body 10 when the origin position is reached by a contact type or non-contact type sensor provided in a non-moving part such as the guide rail 20 It is possible.

  Further, in the flowchart illustrated in FIG. 3, as described above, it is assumed that the opening / closing body 10 in the initial state is in the fully open state, but as another example, between step 1 and step 2 (in other words, For example, immediately after step 1), a step for determining whether or not the opening / closing body 10 is in a fully open state is provided. When the opening / closing body 10 is in a fully open state in this step, the process proceeds to the next step 2. Otherwise, the opening / closing body 10 may be opened to the fully open state automatically or manually (specifically, an operation of an opening switch by the operator, etc.), and then the process may proceed to step 2 above. In this case, whether or not the opening / closing body 10 is fully open is determined based on, for example, whether the load of the opening / closing machine 33 exceeds a predetermined threshold, or contact or non-contact for detecting the fully opening state of the opening / closing body 10. Capacitors (e.g., limit switches or proximity switch, etc.) may be determined or the like by the presence or absence of a signal.

  In the flowchart illustrated in FIG. 3, the initial setting command in step 1 is a special operation set in advance (for example, simultaneously pressing and holding the open button and the close button of the operation switch 37). Indicates that the initial setting command includes a signal indicating that the power has been turned on, a signal generated by operating a specific switch other than the operation switch 37, a signal output on the condition that a specific date and time has been reached, and a fully open state. It is also possible to use a signal output on the condition that it has been performed a predetermined number of times, a signal output on the condition that the operation amount or operation time of the opening / closing body 10 exceeds a predetermined threshold, and the like.

  Further, in the flowchart illustrated in FIG. 4, the opening / closing body 10 is located on the opening direction side of the origin position (see FIG. 1), and if the closing operation is normal, the opening / closing body 10 passes the origin position. 4 is based on the assumption that the signal of the origin sensor 35 changes from OFF to ON. However, as a configuration to be added to the flowchart of FIG. 4, before the step 11, whether the origin sensor 35 is ON or OFF ( In other words, a step for determining whether or not the sensor is ON from the beginning is provided, and when it is determined that the origin sensor 35 is OFF in this step, the process proceeds to Step 11 where the origin sensor is determined. If it is determined from the beginning that 35 is ON, the flow chart of FIG. 5 is performed without performing the processing of step 11 (determination of whether the signal of the origin sensor 35 has changed from OFF to ON). Jumps the processing to step 21, closing member 10 may be a whether or not determined or fully closed.

Moreover, according to the said Example, although the said step 12 is performed only when the operation | movement when the opening / closing body 10 passes the origin position is an open operation | movement, as an example, the opening / closing body 10 is an origin. It is also possible to execute step 12 only when the operation when passing the position is a closing operation.
It should be noted that the above step 12 can be executed regardless of whether the opening / closing body 10 passes through the origin in either the opening operation or the closing operation. In this case, the opening operation and the closing operation are performed. Since there is a possibility that the timing at which the contact changes with time, it is preferable to do as described above.

  Further, according to the above-described embodiment, the recognition of the abnormality when there is no OFF signal (first signal) is performed at the fully opened position, and the recognition of the abnormality when there is no ON signal (second signal) is fully closed. However, as another example, when there is no OFF signal, the abnormality is recognized during the opening / closing operation on the open direction side (above the origin position) with the origin position as a reference. It is also possible to recognize the abnormality when there is no signal during the opening / closing operation on the closing direction side (below the origin position) with respect to the origin position.

DESCRIPTION OF SYMBOLS 10: Opening / closing body 20: Guide rail 30: Storage part 33: Opening / closing machine 34: Control part 35: Origin sensor 36: Count means 37: Operation switch A: Opening / closing device

Claims (7)

An open / close body that opens and closes between a fully open position and a fully closed position; a guide rail that guides the open / close body in the open / close direction; an origin sensor that senses that the open / close body has passed a predetermined origin position; and In an opening and closing device comprising a counting means for recognizing the amount of change from the origin position of the opening and closing body as a count value,
When the origin position is set closer to the closing direction than the fully opened position and closer to the opening direction than the fully closed position, and when there is a sensing signal from the origin sensor, the count value indicates the origin position. An opening and closing device characterized in that the origin value is corrected.   2. The opening / closing apparatus according to claim 1, wherein the origin position is set on the opening direction side of the center of the opening / closing stroke from the fully open position to the fully closed position of the opening / closing body.   When there is a detection signal from the origin sensor, it is determined whether or not the count value is within a predetermined range. If the count value is within the predetermined range, the count value is corrected to the operation origin value. The switchgear according to claim 1 or 2, wherein the switchgear is recognized as abnormal. The origin sensor continues outputting the first signal when the opening / closing body is on the opening direction side with respect to the origin position, and when the opening / closing body is on the closing direction side with respect to the origin position. Configured to continue the output of the second signal instead of the first output,
When the output of the origin sensor changes from the first signal to the second signal, or when the output changes from the second signal to the first signal, the count value at the time of the change is calculated as the operation origin. 4. The switchgear according to claim 1, wherein the switchgear is corrected to a value.   When the opening / closing body position recognized by the count value is on the opening direction side with respect to the origin position and there is no first signal, or the opening / closing body position recognized by the count value is based on the origin position. The switchgear according to claim 4, wherein when there is no second signal on the closing direction side, it is recognized as abnormal.   6. The recognition of the abnormality when there is no first signal is performed at a fully open position, and the recognition of the abnormality when there is no second signal is performed at a fully closed position. Switchgear.   When the opening / closing body position recognized by the count value is on the opening direction side with respect to the origin position and there is no first signal, the opening / closing body position recognized by the count value is based on the origin position. 7. The switchgear according to claim 5, wherein a different abnormality is recognized when the second signal is not present on the closing direction side.

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