JP4680576B2 - Abnormal motion detection device and abnormal motion detection method for opening and closing body - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening / closing body abnormal operation detection device and an abnormal operation detection method in an opening / closing body opening / closing device, for example, an opening shutter device or a disaster prevention shutter device formed by connecting metal slats continuously. The present invention can be used for a panel shutter device formed by connecting metal panels or the like, a sliding-type overhead door shutter device, and the like.

  In the shutter device in which the shutter curtain is wound around the take-up shaft and is drawn up and down and moved up and down, the driving force of the opening / closing device that rotationally drives the take-up shaft is applied to the take-up shaft by a power transmission means such as a chain. A shutter curtain fall prevention device has been proposed in order to prevent the shutter curtain from malfunctioning due to the fact that the chain that is the power transmission means has been cut, etc. ing. (For example, refer to Patent Document 1).

In the event of an emergency such as a chain being cut, the shutter curtain starts closing operation due to falling, in other words, closing operation due to its own weight drop, but when the take-up shaft exceeds a certain rotational speed, this shutter curtain fall prevention device A centrifugal clutch for operating a viscous clutch, which is a braking means that applies a braking force to the rotation of the winding shaft, works, so that a braking torque is applied to the winding shaft to prevent the shutter curtain from dropping suddenly. It has become.
Japanese Unexamined Patent Publication No. 2000-145335 (paragraph numbers 0007 to 0008, FIG. 1)

  As described above, the conventional shutter curtain fall prevention device does not operate unless the rotation speed of the winding shaft exceeds a certain speed, in other words, the shutter curtain descending speed does not exceed a certain speed. It has become.

  Therefore, the conventional shutter curtain fall prevention device has room for the shutter curtain to be lowered to some extent, that is, the shutter curtain is lowered from a certain height position, and the rotation speed of the take-up shaft (shutter curtain lowering speed) is increased. It is effective when the speed exceeds a certain speed, but it is necessary to detect and prevent the shutter curtain from falling even when the rotation speed of the take-up shaft (shutter curtain descending speed) cannot exceed a certain speed. Is inconvenient.

  For this reason, the abnormal operation of the shutter curtain can be detected in a manner that is not easily restricted by the descent start position and the lowering speed of the shutter curtain, and as a result, the abnormal operation detection device and abnormal operation detection of the shutter curtain that can further improve the safety. Proposal of a method is desired.

  An object of the present invention is to provide an abnormal operation detection device and an abnormal operation detection method for an opening / closing body that can further improve the safety of the opening / closing body.

  An apparatus for detecting an abnormal operation of an opening / closing body according to the present invention is capable of opening and closing in a direction having a component in the vertical direction, and an opening / closing body in which an upper direction is an opening direction and a lower direction is a closing direction, and the opening / closing body An opening / closing body abnormal operation detecting device for detecting an abnormal operation of the opening / closing body in an opening / closing apparatus configured to include at least an opening / closing operation of the opening / closing body, wherein at least control for opening the opening / closing body is performed. A control unit that executes the operation state of the switchgear, and an open / close device operation state detection unit that detects an operation state of the switchgear, wherein the control unit detects an operation state of the switchgear detected by the switchgear operation state detection unit And determining whether or not there is a movement abnormality in the closing direction of the opening and closing body, and determining that there is a movement abnormality in the closing direction of the opening and closing body, the predetermined for the movement abnormality in the closing direction of the opening and closing body It is characterized in executing the control.

  In the present invention, an opening / closing device operating state detecting means for detecting an operating state of the opening / closing device is provided, and the control unit moves in the closing direction of the opening / closing body based on the operating state of the opening / closing device detected by the opening / closing device operation state detecting means. If there is a movement abnormality in the closing direction of the opening / closing body, and if it is determined that there is an abnormality in the closing direction of the opening / closing body, the predetermined control for the movement abnormality in the closing direction of the opening / closing body is executed, so the abnormal operation of the opening / closing body is detected. This makes it possible to take appropriate measures against the abnormal operation of the opening / closing body. For this reason, according to this invention, the safety | security of an opening-closing body can be improved more.

  In the present invention, the method for opening and closing the opening / closing body is arbitrary. For example, the opening / closing device has a winding shaft that winds and unwinds the opening / closing body, and the opening / closing body is wound around the winding shaft and fed out. It may be of a retractable type that opens and closes by being folded, or may be a foldable type that opens and closes when the opening and closing body is folded from the unfolded state, and closes and moves by being unfolded from the folded state, It may be of a type that simply opens and closes while maintaining or substantially holding the shape without being wound or folded. As an example of the take-up type, the take-up shaft and the switch motor (including the speed reducer) are connected by a chain, and the driving force of the switch motor is taken up via this chain. It is transmitted to the shaft.

  The opening / closing machine is arbitrary as long as it is a driving mechanism for opening / closing the opening / closing body, and includes a linear motor.

  Here, the opening / closing device operating state detection means may be one that detects the operating state of the opening / closing device after the control unit performs control for opening the opening / closing member to the opening / closing device, and the control unit closes the opening / closing member. It may be one that detects the operation state of the switchgear after executing the control to be performed on the switch, and may be one that detects the operation state of the switchgear after the opening and closing body starts the closing operation due to its own weight drop, The control unit may detect the operation state of the switchgear in a state where the control for stopping the opening / closing operation of the switchgear is performed on the switchgear, and detects the operation state of the switchgear in a state where these are combined. It can be anything and is optional.

  The determination of whether or not there is an abnormality in the movement of the opening / closing body in the closing direction is performed based on the operation instruction information (for example, an instruction to open the opening / closing body) executed by the control unit to the opening / closing device, and the opening / closing device based on the operation instruction information This is done by comparing the operation state of the switchgear detected by the operation state detection means (for example, the actual rotation speed of the winding shaft or the motor of the switchgear, the moving speed of the switchgear, etc. as will be described later).

  Examples of “abnormal movement of the opening / closing body in the closing direction” include the following cases. As a first example, after the control unit performs control for opening and closing the opening / closing body, the opening / closing body moves in the closing direction (deceleration while the opening / closing body is moving in the opening direction, Including moving in the closing direction after stopping). As a second example, it can be mentioned that the movement speed of the opening / closing body in the closing direction exceeds a predetermined movement speed after the control unit performs control for closing the opening / closing body to the opening / closing machine. As a third example, it can be mentioned that the moving speed of the opening / closing body exceeds a predetermined moving speed after the opening / closing body starts a closing operation due to its own weight drop. As a fourth example, the opening / closing body may move in the closing direction regardless of the state in which the opening / closing operation of the opening / closing body is stopped.

  Causes of abnormal movement of the opening and closing body in the closing direction include, for example, that the chain connecting the switch motor and the winding shaft is broken, the chain is disconnected, or the switch motor is broken. Failure of the motor brake of the switch, disconnection of the opening / closing body, disconnection of the chain holding the opening / closing body, disconnection of the chain from the opening / closing body and the suspension, etc. Can be mentioned.

  The “movement abnormality” includes not only the case where the opening / closing body is actually moving in the closing direction but also the case where the opening / closing body may move in the closing direction. The determination of whether there is a possibility of abnormal movement in the closing direction of the opening / closing body is performed, for example, during the stop control of the opening / closing operation of the opening / closing body due to, for example, chain breakage or chain disengagement, failure of the brake of the opening / closing motor. This can be done depending on whether rotation of the take-up shaft in the closing direction is detected. This is because, in the initial stage, for example, the winding of the opening / closing body may be loosened, and the opening / closing body may not yet start moving in the closing direction.

  In the present invention, the operating state (information) of the switchgear detected by the switchgear operating state detection means is arbitrary, for example, the moving speed or moving direction of the opening / closing body, the rotating speed or rotating direction of the motor of the switch, In the case where the opening / closing body is wound by the take-up shaft and fed out, the rotation speed or the rotation direction of the take-up shaft can be mentioned. In this example, the operating state of the switchgear detected by the switchgear operating state detecting means may be only the moving speed or moving direction of the switchgear, or only the rotating speed or rotating direction of the motor of the switchgear. When the body is taken up by the take-up shaft and fed out, only the rotation speed or direction of the take-up shaft may be used, or a combination of these may be used. The moving speed of the opening / closing body indicates the speed and direction of movement of the opening / closing body, and the rotation speed of the motor of the opening / closing body indicates the speed and direction of rotation of the motor. The rotation speed of the take-up shaft indicates the speed and direction in which the take-up shaft rotates.

  The operating state of the opening / closing device detected by the opening / closing device operating state detecting means may include the position of an end member or the like (for example, a seat plate) provided at the end of the opening / closing body in the closing direction of the opening / closing body. Good. Thereby, it is possible to grasp whether the operation start position of the opening / closing body is, for example, a fully closed position or an intermediate position, and the operation state can be detected more precisely.

  Furthermore, the operation state of the switchgear detected by the switchgear operating state detection means may include the duration of the operation instruction executed by the control unit for the switch. As a result, for example, it can be grasped whether the time has passed since the start of the operation, or whether a considerable time has passed since the start of the operation, and further, the previous operation is terminated. It is also possible to grasp whether a long time has elapsed from when the operation starts to when this operation starts. If it is understood that a long time has passed, for example, there is a possibility that there is a movement abnormality by judging that deterioration has progressed due to the occurrence of rust and the risk of chain breakage has increased. It can also be determined.

  The control unit may determine the presence / absence of a movement abnormality in the closing direction of the opening / closing member after grasping the operation state of the opening / closing device detected by the opening / closing device operating state detecting means in time series. . That is, it is possible to determine whether or not there is an abnormal movement in the closing direction of the opening / closing body after grasping how the rotation speed of the winding shaft fluctuates and how the movement of the opening / closing body fluctuates. For example, when opening and closing the opening / closing body, the opening / closing body operates slowly in the opening direction at first, but then stops and then gradually closes in the closing direction. The control unit may determine that there is an abnormality in the movement of the opening / closing body in the closing direction after grasping an event that accelerates.

  When the operating state of the opening / closing device detected by the opening / closing device operating state detecting means is the rotational speed of the winding shaft, the condition for determining that there is an abnormality in the movement of the opening / closing body in the closing direction is, for example, winding It can be mentioned that the rotation speed of the take-up shaft (the number of rotations of the take-up shaft per unit time) is outside a predetermined range. Note that “the rotational speed of the winding shaft is out of a predetermined range” includes that “the rotational speed of the winding shaft is other than a predetermined value”.

  Here, the predetermined range is when there is no abnormality in the opening / closing mechanism (opening / closing machine, chain, winding shaft, etc.), and the winding shaft is normally rotated by the driving force of the opening / closing machine. The rotation speed within the range that can be determined. Similarly, the predetermined value refers to a rotation speed at which it is possible to determine that the winding shaft is normally rotated by the driving force of the opening / closing device when there is no abnormality in the opening / closing mechanism.

  When determining the presence or absence of abnormal movement in the closing direction of the opening / closing body by the rotation speed of the winding shaft, only the speed that is the absolute value of the rotation speed of the winding shaft is determined from the rotation speed of the winding shaft. It may be a target, and only a direction that is a positive or negative sign of the rotation speed of the winding shaft may be determined.

  As a condition for determining that there is a movement abnormality in the closing direction of the opening / closing body when the control unit performs the control for opening the opening / closing body to the opening / closing device, for example, the rotational speed of the winding shaft (absolute The value) is less than a predetermined range, or the direction (sign) of the rotation speed of the winding shaft is reversed.

  As described above, while the control unit performs control for opening the opening / closing body to the opening / closing machine, the winding shaft rotates at a rotation speed within a predetermined range, and the opening / closing body moves in the opening direction. When an abnormality of the opening / closing mechanism (for example, chain breakage, chain breakage, etc., the same applies hereinafter), the driving force of the opening / closing machine is not transmitted to the winding shaft halfway. For this reason, after the rotational speed of the winding shaft is gradually decelerated from the predetermined range (the rotational speed (absolute value) decreases), the winding shaft stops rotating and the opening / closing body is not moved in the opening direction. Stop. Thereafter, the winding shaft starts to rotate in the direction in which the opening / closing body is moved in the closing direction (the direction (sign) of the rotation speed is reversed), and the opening / closing body starts to move in the closing direction. Then, the rotational speed of the winding shaft is gradually accelerated, and the moving speed of the opening / closing body is also accelerated.

  Specifically, when the predetermined rotation speed of the winding shaft for moving the opening / closing body in the opening direction is 10 rotations / minute, there is an abnormality in the opening / closing mechanism during the movement of the opening / closing body in the opening direction. When this occurs, the rotation speed of the take-up shaft is gradually reduced to 10 (rotations / minute, hereinafter omitted), 9, 8, 7,... After that, it gradually accelerates to -1 (rotation / minute, hereinafter omitted), -2, -3, ..., -9, -10, -11. On the other hand, when the sign of the rotational speed is negative, the rotational speed of the winding shaft is −10 (rotation / minute, hereinafter omitted), −9, −8, −7,. After gradually decelerating to 2, -1 and stopping to 0 (zero), 1 (rotation / minute, hereinafter omitted), 2, 3, ..., 9, 10, 11 gradually Accelerate to.

  Therefore, when the speed (absolute value) of the rotational speed of the winding shaft is less than the range of the predetermined rotational speed, or the direction (sign) of the rotational speed of the winding shaft is the sign of the predetermined rotational speed. If the reverse is true, it may be determined that there is a movement abnormality in the closing direction of the opening and closing body.

  As a condition for determining that there is a movement abnormality in the closing direction of the opening / closing body when the control unit performs the control for closing the opening / closing body to the opening / closing device, for example, the speed of the winding shaft is predetermined. Mention when the range is exceeded.

  As described above, while the control unit performs control for closing the opening / closing body with respect to the opening / closing machine, the winding shaft rotates at a rotation speed within a predetermined range and the opening / closing body moves in the closing direction. When an abnormality of the opening / closing mechanism occurs, the driving force of the opening / closing machine is not transmitted to the winding shaft from the middle. For this reason, the rotational speed of the winding shaft is gradually accelerated from the predetermined range (the rotational speed (absolute value) increases). Further, in this case, since the opening / closing body does not move in the opening direction, there is no change in the rotation direction of the rotation speed of the winding shaft. Therefore, when the rotational speed of the winding shaft exceeds a predetermined range, it may be determined that there is an abnormality in movement of the opening / closing body in the closing direction.

  Further, as a condition for determining that there is an abnormal movement in the closing direction of the opening / closing body when the control unit performs control for stopping the opening / closing body for the opening / closing body, for example, the rotational speed of the winding shaft Can be cited when the value exceeds a predetermined range. Note that the predetermined range in this case is a case where the opening / closing body that should originally be maintained in the stopped state (rotation speed of 0 (zero)) moves in the closing direction. Meaning 0 (zero).

  In addition, when the opening / closing body starts a closing operation due to its own weight drop, as a condition for determining that there is an abnormal movement in the closing direction of the opening / closing body, for example, the rotational speed of the winding shaft is within a predetermined range. Can be mentioned when exceeding.

  When the operating state detected by the opening / closing device operating state detecting means is only the rotation direction of the winding shaft, the control unit can determine that there is an abnormal movement in the closing direction of the opening / closing body. When the control for opening the body is performed on the opening / closing machine, the direction of the rotation speed of the winding shaft is the rotation direction for moving the opening / closing body in the closing direction, in other words, the rotation direction for moving the opening / closing body in the opening direction Is the opposite direction of rotation.

  In the case where the operating state of the opening / closing device detected by the opening / closing device operating state detecting means is the moving speed of the opening / closing body, a condition for the control unit to determine that there is a movement abnormality in the closing direction of the opening / closing body is, for example, The moving speed (the amount of movement of the opening / closing body per unit time) is outside the predetermined range. Note that “the moving speed of the opening / closing body is out of the predetermined range” includes that “the moving speed of the opening / closing body is other than a predetermined value”.

  Here, the predetermined range refers to a moving speed in a range where it is determined that the opening / closing body is moving normally by the driving force of the opening / closing device when there is no abnormality in the opening / closing mechanism. Similarly, the predetermined value refers to a moving speed at which it can be determined that the opening / closing body is moving normally by the driving force of the opening / closing device when there is no abnormality in the opening / closing mechanism. In this case, the opening / closing body may be wound around the winding shaft, drawn out and moved to open / close, and the opening / closing body is wound up by the winding shaft and driven by the driving force of the opening / closing device without being fed out. It may be opened and closed as it is.

  When determining the presence or absence of an abnormal movement in the closing direction of the opening / closing body by the moving speed of the opening / closing body, only the speed that is the absolute value of the moving speed of the opening / closing body among the moving speeds of the opening / closing body may be determined. In addition, only the direction that is a positive or negative sign of the moving speed of the opening / closing body may be determined.

  As a condition for determining that there is an abnormal movement in the closing direction of the opening / closing body when the control unit performs control for opening the opening / closing body to the opening / closing device, for example, the speed of the opening / closing body moving speed (absolute value) ) Is less than the predetermined range, or when the direction (sign) of the moving speed of the opening / closing body is reversed.

  As described above, while the control unit performs control for opening and closing the opening / closing body with respect to the opening / closing machine, the opening / closing body moves at a moving speed within a predetermined range, and while the opening / closing body is moving in the opening direction, When an abnormality of the opening / closing mechanism occurs, the driving force of the opening / closing machine is not transmitted to the opening / closing body from the middle. For this reason, after the moving speed of the opening / closing body gradually decelerates from the predetermined range (the speed (absolute value) of the moving speed decreases), the movement of the opening / closing device in the opening direction stops. Thereafter, the opening / closing body starts to move in the closing direction (the direction (sign) of the moving speed is reversed). And the moving speed of the opening / closing body gradually accelerates.

  Specifically, when the speed of the predetermined moving speed when moving the opening / closing body in the opening direction is 5 m / min, there is an abnormality in the opening / closing mechanism during the movement of the opening / closing body in the opening direction. When this occurs, the moving speed of the opening / closing body gradually decelerates to 5 (m / min, hereinafter omitted), 4, 3, 2, 1 and then stops and becomes 0 (zero). (M / min, omitted below), -2, -3, -4, -5, -6 and gradually accelerate. On the other hand, if the sign of the moving speed is negative, the moving speed of the opening / closing body gradually decreases to -5 (m / min, hereinafter omitted), -4, -3, -2, -1. After stopping and becoming 0 (zero), it gradually accelerates to 1 (m / min, hereinafter omitted), 2, 3, 4, 5, 6.

  Therefore, when the speed (absolute value) of the moving speed of the opening / closing body is less than the range of the predetermined moving speed, or the direction (sign) of the moving speed of the opening / closing body is opposite to the sign of the predetermined moving speed. In this case, it may be determined that there is a movement abnormality in the closing direction of the opening / closing body.

  As a condition for determining that there is a movement abnormality in the closing direction of the opening / closing body when the control unit performs the control for closing the opening / closing body on the opening / closing device, for example, the moving speed of the opening / closing body is within a predetermined range. Can be mentioned when exceeding.

  When the control unit performs control for closing the opening / closing body with respect to the opening / closing machine, the opening / closing body moves in the closing direction, and during the movement in the closing direction, as described above, the abnormality of the opening / closing mechanism (for example, When the chain breaks or the chain is broken, the driving force of the opening / closing machine is not transmitted to the opening / closing body from the middle. For this reason, the moving speed of the opening / closing body is gradually accelerated from the predetermined range (the speed (absolute value) of the moving speed increases). In this case, since the opening / closing body is unlikely to move in the opening direction, there is no change in the direction of the moving speed of the opening / closing body. Therefore, when the moving speed of the opening / closing body exceeds a predetermined range, it may be determined that there is a movement abnormality in the closing direction of the opening / closing body.

  Further, as a condition for determining that there is a movement abnormality in the closing direction of the opening / closing body when the control unit performs control for stopping the opening / closing body for the opening / closing body, for example, the speed of the moving speed of the opening / closing body Can be mentioned when the value exceeds a predetermined range. Note that the predetermined range in this case is a case where the opening / closing body that should originally be maintained in the stopped state (the movement speed is 0 (zero)) moves in the closing direction. Meaning 0 (zero).

  In addition, when the opening / closing body starts a closing operation due to its own weight drop, as a condition for the control unit to determine that there is a movement abnormality in the closing direction of the opening / closing body, for example, the moving speed of the opening / closing body is within a predetermined range. You can mention when it exceeds.

  In the case where the operating state of the switchgear detected by the switchgear operating state detecting means is only the moving direction of the switchgear, the control unit can determine that there is an abnormal movement in the closing direction of the switchgear. When the opening / closing body is controlled to open / close, the direction of movement of the opening / closing body is the direction of moving the opening / closing body in the closing direction, in other words, the direction of moving the opening / closing body in the opening direction. Is the opposite direction.

  As an example of the switching device operating state detection means in which the detected operating state of the switching device is the rotation speed of the winding shaft, a rotary encoder attached to the winding shaft and a unit time output from this rotary encoder And a pulse number counting means for counting the number of per-pulses. The switchgear operating state detecting means detects the rotational speed of the winding shaft based on the number of pulses per unit time counted by the pulse number counting means. The rotary encoder may be an optical type or a magnetic type, and is arbitrary. The pulse output from the rotary encoder may be a single-phase type or a two-phase type, and is arbitrary. The rotary encoder may be directly attached to the take-up shaft, or may be attached to the take-up shaft indirectly through another rotating member, and is optional.

  As an example of the switching device operating state detecting means in which the detected operating state of the switching device is the rotation direction of the winding shaft, a two-phase rotary encoder attached to the winding shaft, And a pulse phase discriminating means for discriminating the phases of the two-phase pulses output from the rotary encoder. This pulse phase discriminating means discriminates the rotation direction (forward rotation direction, reverse rotation direction) of the winding shaft from the phase difference between the two pulses of the A phase and B phase output from the rotary encoder. The state detection means detects the rotation direction of the winding shaft based on the discrimination result output from the pulse phase discrimination means (for example, a pulse such as 1 for forward rotation and 0 (zero) for reverse rotation). become.

  As another example of the switchgear operating state detecting means in which the detected operating state of the switchgear is the rotation direction of the take-up shaft, power is supplied by the rotation of the take-up shaft attached to the take-up shaft. There may be mentioned a configuration including a generated DC generator and current direction determining means for determining the direction (positive / negative) of the current output from the DC generator. The switchgear operating state detection means detects the rotation direction of the winding shaft based on the determination result output from the current direction determination means (for example, a pulse such as 1 for positive and 0 (zero) for negative). Will do. Instead of the current direction determining means, voltage phase determining means for determining the phase (positive / negative) of the voltage output from the DC generator may be provided.

  As an example of an opening / closing device operating state detection means in which the detected operating state of the opening / closing device is the moving speed of the opening / closing body, both end portions in the width direction of the end member provided at the front end of the opening / closing body in the closing direction of the opening / closing body A DC generator that generates electric power by relative movement between the end member and a guide member that guides the opening / closing operation of the opening / closing body based on the opening / closing operation of the opening / closing body, and an output from the DC generator And a power measuring means for measuring the power per unit time. The switchgear operating state detection means detects the moving speed of the switchgear from the power per unit time measured by the power measuring means.

  As an example of the opening / closing device operating state detection means in which the detected operating state of the opening / closing device is the moving direction of the opening / closing member, both end portions in the width direction of the end member provided at the tip of the opening / closing member in the closing direction of the opening / closing member A DC generator that generates electric power by relative movement between the end member and a guide member that guides the opening / closing operation of the opening / closing body based on the opening / closing operation of the opening / closing body, and an output from the DC generator And a current direction discriminating means for discriminating the direction (positive / negative) of the current to be generated. This switchgear operating state detection means detects the moving direction of the winding shaft based on the determination result output from the current direction determination means (for example, a pulse such as 1 for positive and 0 (zero) for reverse). Will do. Instead of the current direction determining means, voltage phase determining means for determining the phase (positive / negative) of the voltage output from the DC generator may be provided.

  Another example of the switching device operating state detecting means in which the detected operating state of the switching device is the moving direction of the switching body includes a projector and a light receiver, and receives a phototransistor, a photodiode, and the like. An example is one in which at least one photoelectric sensor as an element is attached at a predetermined height position in the guide member.

  In the present invention described above, when the controller determines that there is a movement abnormality in the closing direction of the opening / closing member based on the operation state of the opening / closing device detected by the opening / closing device operation state detecting means, the movement abnormality in the closing direction of the opening / closing member is determined. There may be provided an opening / closing body movement abnormality prevention means for preventing the movement. According to this, since it is possible to prevent the movement abnormality of the opening / closing body from continuing after the controller determines that the movement abnormality in the closing direction of the opening / closing body is present, the safety of the opening / closing body is further improved. Can be made.

  The function of the opening / closing body movement abnormality preventing means for preventing the movement abnormality in the closing direction of the opening / closing body is arbitrary. For example, the motor of the opening / closing mechanism, which is an opening / closing mechanism, is stopped, Examples include operating the brake, that is, stopping the operation of the opening / closing mechanism and forcibly driving the motor of the opening / closing machine in the opening direction.

  In the present invention described above, when the control unit determines that it is impossible to prevent the opening / closing body movement abnormality in the closing direction even by operating the opening / closing body movement abnormality prevention means, When the control unit determines that the chain is loaded and improper when the means is activated, the opening / closing body abnormal movement emergency blocking means for urgently preventing the opening / closing body from moving abnormally in the closing direction is provided. You may prepare.

  According to this, even if there is a case where it is impossible to prevent the opening / closing body movement abnormality in the closing direction by the opening / closing body movement abnormality preventing means, it is possible to more reliably prevent the opening / closing body movement abnormality in the closing direction. Can do.

  Here, as a condition for determining that it is impossible to prevent the opening / closing body from moving abnormally in the closing direction even by operating the opening / closing body movement abnormality preventing means, for example, the opening / closing body is in a fully closed state or substantially all Starting from the closed state, when the opening / closing body is opened to some extent, the opening / closing mechanism is abnormal, and the opening / closing body has moved in the closing direction. This is the time when I was able to grasp. Here, the point in time when the opening / closing body is opened to some extent refers to the time when the opening / closing body is opened to the extent that a person can bend and pass under the opening / closing body or to look into the opening / closing body.

  When the opening / closing body is opened from the fully closed state or substantially fully closed state (including the case where the opening / closing body is opened after a long period of time has elapsed since the opening / closing body is closed), the weight of the opening / closing body is also large and acceleration is high. Because of sudden changes (because the winding diameter is further reduced if a winding shaft is provided), an opening / closing mechanism (switch motor, brake motor brake, winding shaft, switch motor and winding) The load on the chain connecting the shaft and the like) increases, and as described above, the brakes of the motor of the switchgear, abnormalities such as chain breakage and chain breakage are likely to occur. In consideration of the weight of the opening / closing body and the acceleration during movement, the load on the opening / closing mechanism is the largest when the opening / closing body is opened from the fully closed state or the substantially fully closed state. When the opening / closing body is opened from the intermediate position or a position closer to the fully open state, the opening / closing body is closed from the intermediate position or a position closer to the fully closed state. The load decreases in the order in which they are performed. In the case of, for example, a winding type or a suspension type, in which the weight of the opening / closing body decreases as the opening / closing body moves in the opening direction, the above-described situation further increases.

  When not much time has passed since the opening and closing body started the opening operation, and the opening and closing body is abnormally moved in the closing direction when the opening and closing body is opened to some extent, the load increases rapidly, There is a possibility that a chain break or chain breakage may have occurred, or the controller may stop, and the control unit stops the operation of the opening / closing mechanism, for example, the control to stop the motor of the switch or the brake of the motor of the switch It can be determined that it is impossible to prevent an abnormal movement of the opening / closing body in the closing direction even if the control is performed. Therefore, in such a case, it is meaningful to execute control for operating the opening / closing body movement abnormality emergency prevention means for urgently preventing the opening / closing body from moving abnormally in the closing direction.

  The structure, function, etc. of the opening / closing body movement abnormality emergency prevention means are arbitrary. As a first example of the opening / closing body movement abnormality emergency prevention means, it is provided in a guide member that guides the opening / closing movement of the opening / closing body in a normal state, and when the controller determines that there is a movement abnormality in the closing direction of the opening / closing body, In order to support the front-end | tip of the closing direction of the opening / closing body in an opening / closing body, the supporting member currently formed from the rod-shaped member which protrudes in the width direction inside of an opening / closing body can be mentioned. According to this, when the control unit determines that there is an abnormality in the movement of the opening / closing body in the closing direction, the control unit performs control to project the support member horizontally from the guide member to the inside of the opening / closing body in the width direction or from below to above. By executing, the front end of the open / close body in the closing direction of the open / close body abuts and is supported by the front end of the support member, so that the abnormal movement of the open / close body in the closing direction is prevented.

  As a second example of the opening / closing body movement abnormality emergency prevention means, it is provided inside an end member provided at the end of the opening / closing body in the closing direction of the opening / closing body, and there is a movement abnormality in the closing direction of the opening / closing body by the control unit. When the determination is made, an air bag that expands to the outside of the end member by injecting gas inside the end member can be mentioned. According to this, when it is determined by the control unit that there is an abnormality in the movement of the opening / closing body in the closing direction, the control unit executes control to inflate the airbag, so that the tip of the opening / closing body in the closing direction of the opening / closing body is Since the airbag is locked by the inflated airbag, abnormal movement of the opening / closing body in the closing direction is prevented.

  As a third example of the opening / closing body movement abnormality emergency prevention means, a ratchet comprising a ratchet attached to the winding shaft and rotatable together with the winding shaft, and a locking claw for locking to the ratchet. A mechanism can be mentioned. According to this, when the control unit determines that there is an abnormality in the movement of the opening / closing body in the closing direction, the control unit executes a control to lock the locking claw with the ratchet, thereby causing the movement abnormality in the closing direction of the opening / closing body. Will be blocked.

  As a fourth example of the opening / closing body movement abnormality emergency prevention means, an air bag provided inside the guide member for guiding the opening / closing operation of the opening / closing body can be mentioned. According to this, when it is determined by the control unit that there is an abnormal movement in the closing direction of the opening / closing body, the control unit executes control to inflate the airbag, so that the width direction end of the opening / closing body is The air bag that is inflated inside is locked. Thereby, the movement abnormality in the closing direction of the opening / closing body is prevented. When two guide members are arranged on the left and right sides to guide both ends in the width direction of the opening / closing body, the above-described support member such as an air bag is provided inside one of the left and right guide members. In order to more reliably prevent abnormal movement of the opening / closing body in the closing direction, it may be provided inside the left and right guide members. More preferably.

  It should be noted that the position of the opening / closing body in which the abnormal movement in the closing direction is supported from below (the height position of the tip of the support member and the amount of inflation of the airbag provided on the end member) Even if a person or an object exists under the body, it is preferable to set the position downward so that the person or the object can pass under the opening / closing body. Similarly, when the movement of the opening / closing body in the closing direction is prevented by the operation of the ratchet mechanism or the expansion of the airbag provided on the guide member, the closing direction of the opening / closing body in the stopped opening / closing body is reduced. The height position of the tip is preferably set to a lower level so that a person or an object can pass under the opening / closing body even if a person or an object exists under the opening / closing body. In addition, depending on the case, this height position may be set to the extent that a person can bend or pass through his / her hips, or so as not to be pinched.

  In the present invention, when the control unit determines that there is a movement abnormality in the closing direction of the opening / closing body, the opening / closing body movement abnormality notifying means for notifying the movement abnormality in the closing direction of the opening / closing body may be provided. Good. According to this, a person such as an administrator can quickly know that an abnormal movement in the closing direction of the opening / closing body has occurred, and this causes an abnormal movement in the closing direction of the opening / closing body. By rushing to the opening / closing device, it is possible to quickly take appropriate measures against abnormal movement of the opening / closing body in the closing direction.

  Here, the method of notifying the abnormality of the operating state of the opening / closing body is arbitrary. For example, the abnormality is notified by an alarm or a synthesized sound of a human being through a speaker, or the blinking red or yellow The thing to alert | report, the thing which combined these, etc. can be mentioned.

  In the present invention described above, when the control unit determines that there is a movement abnormality in the closing direction of the opening / closing member based on the operation state of the opening / closing device detected by the opening / closing device operation state detecting means, an obstacle is present in the closing direction of the opening / closing member. Obstacle sensing means for sensing whether or not it exists may be provided.

  According to this, when the movement abnormality in the closing direction of the opening / closing body has occurred, it is possible to grasp whether there is an obstacle in the closing direction of the opening / closing body, and if there is an obstacle In this case, after that, an appropriate measure for the obstacle (for example, a measure to notify the outside that the obstacle has been detected by the opening / closing body movement abnormality notification means, or a switching action by the opening / closing body movement abnormality emergency prevention means) Measures to prevent abnormal movement of the body in the closing direction can be taken. The structure and function of the obstacle sensing means are arbitrary.

  It should be noted that when the opening / closing body does not move much after the opening operation has started and the opening / closing body is abnormally moved in the closing direction when the opening / closing body is opened to some extent, the obstacle sensing means When an obstacle is detected, it is preferable to give a warning of the highest degree of urgency by the opening / closing body movement abnormality notification means, and it is possible to determine whether or not it is in a fully closed state, and not in a fully closed state. It is more preferable when it is detected. Moreover, not only when the opening / closing body movement abnormality emergency prevention means is not provided (including the case where the opening / closing body movement abnormality emergency prevention means is provided), but also when the opening / closing body movement abnormality emergency prevention means is operated. It is preferable to issue a warning of the highest degree of urgency.

  If the location where the switchgear is installed is a remote location, etc., and there is a high possibility that it is normally unattended, an alarm of the highest urgency level is installed at a security company or management company via wired or wireless communication. It is more preferable to report to a certain monitoring device.

  In the present invention described above, the time required from the time when the control unit performs the control for opening / closing the opening / closing member to the opening / closing device to the time when the control unit determines that there is a movement abnormality in the closing direction of the opening / closing member is counted. A control means for determining an abnormal level of the operating state of the switchgear based on the operating state of the switchgear detected by the switchgear operating state detection means within the required time counted by the clocking means Then, predetermined control according to the determined abnormal level may be executed.

  Here, the operating state of the opening / closing device detected by the opening / closing device operating state detecting means includes the amount of rotation of the winding shaft that can be calculated from the information detected by the opening / closing device operating state detecting means, the amount of movement of the opening / closing body, etc. Is included.

  According to this, for example, when the required time measured by the time measuring means is short, in other words, as described above, not much time has passed since the opening / closing body started the opening operation, and the opening / closing body is somewhat Whether the opening / closing body has moved abnormally in the closing direction at the time of opening, or when the required time measured by the timing means is long, in other words, a considerable amount of time has elapsed since the opening / closing body started the opening operation. For measures against open / close bodies that have an abnormal movement in the closing direction, such as whether an abnormal movement in the closing direction of the open / closed body has occurred when the open / close body has been opened to a considerably high height. It is possible to make a difference.

  In other words, when a considerable time has elapsed since the opening and closing body started to open, and when the opening and closing body is opened to a very high height, an abnormal movement in the closing direction of the opening and closing body occurs, Until the body is fully closed, in other words, it takes a certain amount of time for the tip of the opening / closing body to land, so even if there is an obstacle in the closing direction of the opening / closing body, this obstacle It is considered possible to remove the object before the opening / closing body is fully closed.

  For this reason, when a considerable time has elapsed since the opening and closing body started the opening operation, and when the opening and closing body is opened to a considerably high height, an abnormal movement in the closing direction of the opening and closing body occurs. When there is an obstacle in the closing direction of the opening / closing body, the control unit determines that the level of abnormal movement in the closing direction of the opening / closing body is, for example, medium, while the obstacle is in the closing direction of the opening / closing body. When there is no object, the control unit determines that the level of movement abnormality in the closing direction of the opening / closing body is, for example, low (mild), and thereafter, the control unit responds to these movement abnormality levels. Predetermined control may be performed. For example, when the opening / closing body movement abnormality notification means is provided, the opening / closing body movement abnormality notification means provides information indicating that the degree of the movement abnormality level in the closing direction of the opening / closing body is medium or low. What is necessary is just to alert | report. Further, the opening / closing body movement abnormality emergency prevention means may be operated to prevent the opening / closing body from moving abnormally in the closing direction.

  In addition, when the movement abnormality level in the closing direction of the opening / closing body is low or moderate as necessary, the opening / closing body movement abnormality emergency prevention means may not be operated. This is because, for example, activation of the opening / closing body movement abnormality emergency prevention means such as an air bag has a great influence on the environment around the opening / closing device, and the work for restoring the opening / closing device to its original state is later. This is because there is a high possibility that it will occur.

  On the other hand, as described above, when the opening / closing body does not move much after the opening operation, and when the opening / closing body is opened to some extent, the opening / closing body is abnormally moved in the closing direction, When an obstacle is sensed by the obstacle sensing means, there is a high possibility that the time until the opening / closing body is fully closed is very short.

  Therefore, in this case, the control unit determines that the degree of the movement abnormality level in the closing direction of the opening / closing body is high (severe), and performs predetermined control according to this movement abnormality level, for example, the opening / closing body It is preferable to take measures such as preventing abnormal movement in the closing direction of the opening / closing body by the abnormal movement emergency blocking means. Further, when the opening / closing body movement abnormality notification means is provided, the opening / closing body movement abnormality notification means provides information indicating that the degree of the movement abnormality level in the closing direction of the opening / closing body is high (severe), that is, As described above, it is preferable to notify the alarm of the highest urgency level.

  The present invention as described above can be applied to any opening / closing device, for example, an opening shutter device, a shutter device for disaster prevention, or an opening / closing device whose opening / closing body is a shutter curtain formed by connecting metal slats continuously. The present invention can be applied to a grill shutter device in which the body is formed by connecting panels made of metal or the like, and an overhead door shutter device in which the opening / closing body is a sliding type.

  In the present invention described above, the control by the control unit may be executed by software or may be executed by hardware such as a logic circuit, and is arbitrary.

  The method for detecting an abnormal operation of an opening / closing body according to the present invention is capable of opening and closing in a direction having a component in the vertical direction, the opening / closing body having an open direction in the upward direction and a closing direction in the downward direction, and the open / close body An opening / closing body abnormal operation detecting method for detecting an abnormal operation of the opening / closing body in an opening / closing device comprising an opening / closing device for opening at least the opening / closing body, wherein at least the control for opening the opening / closing body is performed. An opening / closing body opening / closing control step executed for the opening / closing device, an opening / closing device operation state detecting step for detecting an operation state of the opening / closing device, and the opening / closing operation based on the operation state of the opening / closing device detected by the opening / closing device operation state detection step. An opening / closing body operating state determination step for determining whether there is an abnormality in the movement of the body in the closing direction, and the opening / closing body operating state determination step to move the opening / closing body in the closing direction. When it is determined there is an abnormality, is characterized in that a control step of executing a predetermined control for the mobile abnormality in the closing direction of the closing body.

  According to the present invention, there is an effect that the safety of the opening / closing body can be further improved.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated based on drawing. The opening / closing device provided with the abnormal operation detecting device 30 for the opening / closing body according to the present embodiment is a shutter device 1 for an opening of a building. First, the entire structure of the opening shutter device 1 will be described with reference to FIG. 1 which is an overall front view when the shutter curtain 8 as an opening / closing body is in a fully closed state.

  The opening shutter device 1 opens and closes an opening 2 that is an entrance / exit formed in a building housing 6 such as a wall that partitions an indoor side and an outdoor side of a building with a shutter curtain 8. A horizontal winding shaft 11 is rotatably supported by a pair of left and right brackets 16 on the upper portion of the opening 2, and an upper end portion, that is, an end portion on the winding shaft 11 side, is coupled to the winding shaft 11. The left and right end portions of the shutter curtain 8 are slidably inserted into a pair of left and right guide rails 13 which are guide members provided in the building housing 6 while being prevented from being detached by a retaining member (not shown).

  The shutter curtain 8 includes a curtain body 9 and a seat plate 10 that is an end member provided at the lower end of the curtain body 9. The curtain body 9 is formed by connecting a large number of metal slats, and the shutter curtain 8 having such a slat type is wound around a winding shaft 11 in a normal state.

  The take-up shaft 11 and the pair of left and right brackets 16 and the like are arranged inside the shutter case 12 provided in the upper part of the opening 2, that is, in the ceiling back space 4 partitioned from the indoor space 3 by the ceiling member 5. Built in.

  The shutter curtain 8 is unwound and wound by forward and reverse rotation of the winding shaft 11, and the opening / closing operation of the shutter curtain 8 is performed while being guided by the guide rail 13.

  An opening / closing machine 15 composed of a combination of a motor and a brake is attached to one of the left and right brackets 16 (right side in FIG. 1). The opening / closing machine 15 includes a winding shaft 11 and a chain described later. It is connected via power transmission means 17 comprising a sprocket or the like.

  An opening / closing switch 20 for electrically opening and closing the shutter curtain 8 is provided in the building housing 6 provided with one of the pair of left and right guide rails 13 (on the right side in FIG. 1).

  When the closing button 22 of the opening / closing switch 20 is operated, the motor of the opening / closing machine 15 is positively driven. As a result, the shutter curtain 8 is closed while being retracted from the winding shaft 11 by the normal rotation of the winding shaft 11, and the seat When the plate 10 comes into contact with the floor 7 and the shutter curtain 8 is fully closed, the opening 2 is closed by the shutter curtain 8.

  Further, when the open button 21 of the open / close switch 20 is operated, the motor of the open / close machine 15 is reversely driven, so that the shutter curtain 8 is wound around the take-up shaft 11 by the reverse rotation of the take-up shaft 11 and the opening operation is performed. Do. The shutter curtain 8 is guided by the pair of left and right guide rails 13 to open (up), and the shutter curtain 8 moves to the take-up shaft 11 until the seat plate 10 reaches the lintel that forms the lower surface of the shutter case 12. By being wound up, the shutter curtain 8 fully opens the opening 2.

  In the event of a power failure, the shutter curtain 8 is opened by winding up the shutter curtain 8 with a handle or chain (not shown), while the shutter curtain 8 is closed by pulling a descent string (not shown). This is done by dropping the curtain 8 by its own weight.

  Next, the configuration of the abnormal operation detection device 30 and the switch 15 according to the present embodiment will be described with reference to FIG. FIG. 2 is a configuration diagram of the abnormal operation detection device 30 and the switch 15.

  As illustrated in FIG. 2, the abnormal operation detection device 30 according to the present embodiment includes a control unit 31 that performs at least control for opening the shutter curtain 8 with respect to the switch 15, and at least the control unit 31. Is provided with an opening / closing device operation state detecting means for detecting an operation state of the opening shutter device 1 after the opening / closing device 15 is controlled to open the shutter curtain 8.

  The control unit 31 includes an MPU 100, a RAM 101, a ROM 102, and a timer circuit 103 that is a time measuring unit for measuring time and the like. In the present embodiment, the MPU 100 executes a control for opening the shutter curtain 8 to the switch 15 while reading and referring to the RAM 101 a program or fixed data recorded in advance in the ROM 102, or Various controls described below are executed.

  The MPU 100 determines whether or not there is an abnormal movement in the closing direction of the shutter curtain 8 based on the operating state of the opening shutter device 1 detected by the opening / closing device operating state detecting means, and moves the shutter curtain 8 in the closing direction. When it is determined that there is an abnormality, predetermined control is performed for an abnormal movement of the shutter curtain 8 in the closing direction.

  The opening / closing device operating state detection means is attached to the winding shaft 11 and outputs a two-phase pulse of A phase and B phase by the rotation of the winding shaft 11, and A output from the rotary encoder 40. Counter circuit 104 which is a pulse number counting means for counting the number of pulses per unit time of either the phase or the B phase, and a pulse phase discrimination means for discriminating the phases of the two-phase pulses output from the rotary encoder 40 And a pulse discriminating circuit 105. Note that the counter circuit 104 also has a function of adding the number of pulses of either the A phase or the B phase output from the rotary encoder 40.

  Since the counter circuit 104 counts the number of pulses output from the rotary encoder 40 per unit time, the rotational speed of the winding shaft 11 can be detected. Further, the phase of the two-phase pulses of A phase and B phase output from the rotary encoder 40 is discriminated by the pulse discriminating circuit 105, so that the rotation direction of the winding shaft 11 can be detected.

  In the present embodiment, the counter circuit 104 and the pulse discrimination circuit 105 are incorporated in the control unit 31, but the counter circuit 104 and the pulse discrimination circuit 105 may be incorporated in the rotary encoder 40.

  Further, the abnormal operation detection device 30 is configured such that the operation state of the shutter curtain 8 is abnormal based on the rotational speed of the winding shaft 11 detected by the MPU 100 using the rotary encoder 40 and the counter circuit 104 constituting the switching device operation state detection means. When it is determined that the opening / closing body movement abnormality urgent prevention means for urgently preventing the movement abnormality of the shutter curtain 8 in the closing direction is provided.

  In this embodiment, there are two opening / closing body movement abnormality emergency prevention means, and the first opening / closing body movement abnormality emergency prevention means includes a winding shaft rotation stop instruction circuit 106 that instructs to stop the rotation of the winding shaft 11; The ratchet mechanism 50 which is a mechanism for stopping the forward rotation of the winding shaft 11 and the solenoid 60 are configured, and the second opening / closing body movement abnormality emergency preventing means is in the closing direction of the shutter curtain 8. The airbag operation instructing circuit 107 and the airbag device 70 are configured to urgently prevent the movement abnormality.

  Further, the abnormal operation detection device 30 is configured such that the operation state of the shutter curtain 8 is abnormal based on the rotational speed of the winding shaft 11 detected by the MPU 100 using the rotary encoder 40 and the counter circuit 104 constituting the switching device operation state detection means. When it is determined that the opening / closing body movement abnormality notification means notifies the abnormality of the operation state of the shutter curtain 8.

  The opening / closing body movement abnormality notifying means includes an alarm device 90 and an alarm generation instruction circuit 108 incorporated in the control unit 31 and instructing the alarm device 90 to generate an alarm.

  Further, the abnormal operation detection device 30 is an obstacle detection means for detecting whether an obstacle exists in the closing direction of the shutter curtain 8 when the MPU 100 determines that the operation state of the shutter curtain 8 is abnormal. The obstacle sensing device 80 is provided.

  The obstacle sensing device 80 includes a pressure-sensitive seat board switch (not shown) that is an obstacle sensing switch provided at the front end of the shutter curtain 8 in the closing direction of the shutter curtain 8, and the seat board switch. It includes a transmitter 82 that transmits an obstacle detection signal by detecting an obstacle, and a receiver 83 that receives an obstacle detection signal transmitted from the transmitter 82. The obstacle detection signal transmitted from the transmitter 82 is an optical signal from an LED, a laser, or the like. For this reason, the transmitter 82 is a light projecting unit, and the receiver 83 is a light receiving unit. The receiver 83 that has received the obstacle detection signal transmits an electric signal indicating that the obstacle has been detected to the MPU 100.

The opening / closing machine 15 includes a motor 15B that drives forward and reverse to rotate the winding shaft 11 forward, a brake 15C that stops driving the motor 15B, drive control of the motor 15B, and release and return of the brake 15C. An opening / closing switch drive control circuit 15A for executing control, a fully open limit switch 15D for determining whether or not the shutter curtain 8 is in a fully open state or substantially fully open state, and the shutter curtain 8 in a fully closed state or substantially fully closed state. 3 is a partially enlarged perspective view of the right bracket 16 which is one of the left and right brackets 16 in FIG. 1. .

  As shown in FIG. 3, power transmission means 17 for transmitting the driving force of the motor 15 </ b> B of the opening / closing machine 15 to the winding shaft 11 is attached to the bracket 16. A drive sprocket (not shown) is coupled to the drive shaft of the motor 15B of the opening / closing machine 15, while a driven sprocket 18 is coupled to the rotation center shaft 11A of the winding shaft 11 via a connection shaft (not shown). Yes. A chain belt 19 is wound around a drive sprocket (not shown) and a driven sprocket 18. For this reason, the driven sprocket 18 is connected to the drive sprocket via the chain belt 19.

  When the shutter curtain 8 is opened, the chain belt 19 is rotated in the direction of arrow A by the rotational driving force of the motor 15B of the opening / closing machine 15, and the driven sprocket 18 around which the chain belt 19 is wound is moved in the direction of arrow B. Since it rotates, the winding shaft 11 also rotates in the arrow B direction. On the other hand, when the shutter curtain 8 is closed, the chain belt 19 rotates in the direction opposite to the arrow A direction, and the driven sprocket 18 rotates in the direction opposite to the arrow B direction. It rotates in the direction opposite to the arrow B direction.

  Next, the structure of the rotary encoder 40 constituting the opening / closing device operating state detection means and the ratchet mechanism 50 serving as the first opening / closing body movement abnormality emergency prevention means will be described with reference to FIG.

  The rotary encoder 40 is of a type that is directly attached to the rotation center shaft 11 </ b> A of the take-up shaft 11, and the main body 41 of the rotary encoder 40 is fixed to a bracket 43 indicated by a two-dot chain line coupled to the bracket 16. Has been. A through hole (not shown) is formed in the central portion of the main body 41, and the rotation center shaft 11 </ b> A of the winding shaft 11 is inserted through the through hole. And the outer peripheral part of the through-hole becomes the rotation part 42 which can rotate freely with 11 A of rotation center shafts. A pulse output from the rotary encoder 40 by the rotation of the rotation center shaft 11A is transmitted to the counter circuit 104 and the pulse discrimination circuit 105 of the control unit 31 via the lead wire 44.

  The bracket 16 is provided with a ratchet mechanism 50 which is a first opening / closing body movement abnormality emergency prevention means. The ratchet mechanism 50 includes a ratchet 51 and an arm member 53 having a locking claw 53 </ b> A whose front end is locked to the ratchet 51.

  The rotation center portion 11A of the winding shaft 11 passes through and is coupled to the rotation center portion of the ratchet 51, and a portion of the ratchet 51 that faces the driven sprocket 18 is coupled to the driven sprocket 18. The ratchet 51 is rotatable with the driven sprocket 18 and the rotation center shaft 11A while being supported by the bearing 52. On the other hand, the arm member 53 is attached to the bracket 16 with a screw 54 and is rotatable about the screw 54.

  A spring 55 is attached to the bracket 16 in the vicinity of the center of rotation of the arm member 53. On the upper surface of the arm member 53, the arm member 53 is rotated downward so that the locking claw 53 A is attached to the ratchet 51. A downward biasing force of the spring 55 is always applied so as to be locked.

  On the other hand, the solenoid 60 is attached to the side surface (the right side surface in FIG. 3) opposite to the side on which the arm member 53 is attached on both side surfaces of the bracket 16. A plunger (not shown) inside the solenoid 60 is connected to a substantially flat locking member 62 for preventing the arm member 53 from rotating downward and the locking claw 53A from being locked to the ratchet 51. Yes.

  The lead wire 61 of the solenoid 60 is connected to the winding shaft rotation stop instruction circuit 106 of the control unit 31. When the shutter curtain 8 operates abnormally, a control signal from the take-up shaft rotation stop instruction circuit 106 is transmitted to the solenoid 60 via the lead wire 61, whereby the coil inside the solenoid 60 is excited. ing.

  The locking member 62 normally passes through a through hole (not shown) formed in the bracket 16 and protrudes to the same side as the side on which the arm member 53 is attached on both side surfaces of the bracket 16. Thus, the spring 55 comes into contact with the lower surface of the arm member 53 to which a downward biasing force is always applied. For this reason, the locking claw 53A of the arm member 53 is prevented from being locked to the ratchet 51 under normal conditions, and the ratchet 51 of the ratchet mechanism 50 rotates forward and backward together with the driven sprocket 18 and the winding shaft 11. It has become.

  On the other hand, when the shutter curtain 8 operates abnormally, the winding shaft rotation stop instruction circuit 106 is actuated by the MPU 100, whereby the coil in the solenoid 60 is excited and the plunger is attracted and connected to the plunger. The retaining member 62 is also sucked, and the distal end of the retaining member 62 is retracted to the inside of a through hole (not shown) of the bracket 16. For this reason, the arm member 53 in which the locking claw 53 </ b> A is prevented from being locked to the ratchet 51 by contact with the locking member 62 is rotated downward while being biased by the downward biasing force of the spring 55. Therefore, the locking claw 53A is locked to the ratchet 51. As a result, the forward rotation of the winding shaft 11 in the direction opposite to the B direction is prevented. That is, the closing operation of the shutter curtain 8 is prevented.

  Next, the structure of the airbag apparatus 70 which comprises the 2nd opening-and-closing body movement abnormal emergency prevention means is demonstrated. As shown in FIG. 1, the airbag device 70 is provided inside the pair of left and right guide rails 13. When the shutter curtain 8 abnormally operates, the airbag device 70 is averaged from the height position of the floor 7. The airbag 71 is inflated over the height of the waist of a person having a certain height.

  4 is a cross-sectional view taken along line S4-S4 in FIG. 1, that is, a horizontal cross-sectional view of the right guide rail 13 which is one of the pair of left and right guide rails 13 serving as guide members. The state when not operating is shown. FIG. 5 shows a state when the airbag apparatus 70 is operated in FIG. Hereinafter, the airbag device 70 provided inside the right guide rail 13 will be described, and description of the airbag device 70 provided inside the left guide rail 13 will be omitted.

  As shown in FIG. 4, in a normal time, the airbag 71 is attached to the storage case 72 attached to the side surface portion 13 </ b> A on the outdoor side (the front side in FIG. 1) in the inside 14 of the right guide rail 13. Folded and stored.

  The storage case 72 includes a main body 72A and a cover 72B that covers the main body 72A, and the main body 72A is made of metal. Further, the cover 72B is formed of an acrylic plate material, and the cover 72B and the main body 72A are bonded with an easily peelable adhesive or the like. Further, a notch 72C extending in the opening / closing direction of the shutter curtain 8 is formed in the center in the width direction inside the cover 72B, and when the gas is injected into the airbag 71, the airbag 71 expands. The cover 72B is pierced through the cover case 72 and jumps out of the storage case 72.

  Note that the airbag device 70 includes an inflator (gas generator) (not shown) that generates gas for inflating the airbag 71. When the shutter curtain 8 operates abnormally, a control signal is transmitted from the airbag operation instruction circuit 107 incorporated in the control unit 31 to the inflator via the lead wire 73 shown in FIG. 1 to generate explosives and gas in the inflator. An initiator (ignition device) (not shown) for igniting the agent is activated. Thereby, gas for inflating the airbag 71 is generated, and the generated gas is injected into the airbag 71, and the airbag 71 is inflated so as to break through the cover 72B of the storage case 72.

  As shown in FIG. 5, the airbag 71 that has expanded and jumped out of the storage case 72 has the shutter curtain 8 opposite to the side surface portion 13A of the guide rail 13 on which the airbag device 70 is provided. Is moved in the direction of the side surface portion 13B, and the width direction end portion 9A of the curtain body 9 of the shutter curtain 8 inserted into the inside 14 of the guide rail 13 is surrounded. Thereby, the movement abnormality in the closing direction of the shutter curtain 8 is prevented.

  Next, the flow of control executed by the MPU 100 of the control unit 31 of the abnormal operation detection device 30 will be described below. 6 and 7 are flowcharts showing a control flow executed by the MPU 100 when the shutter curtain 8 is opened.

  In order to open the shutter curtain 8, the open button 21 of the open / close switch 20 shown in FIG. As a result, as shown in FIG. 2, a control signal for instructing the opening operation of the shutter curtain 8 is transmitted to the MPU 100.

  The MPU 100 to which the control signal is transmitted from the opening / closing switch 20 determines whether the control signal is a signal for opening the shutter curtain 8 (step S1), and the control signal causes the shutter curtain 8 to open. If not (step S1-NO), the MPU 100 executes other processing (step S2), for example, control for closing the shutter curtain 8 and control for stopping the opening / closing operation of the shutter curtain 8. On the other hand, when the control signal is a signal for opening the shutter curtain 8 (step S1-YES), thereafter, the MPU 100 determines whether or not the full-open limit switch 15D of the switch 15 is operating. (Step S3).

  If the fully open limit switch 15D is operating (step S3-YES), it is determined that the shutter curtain 8 has already been fully opened, and execution of the control by the MPU 100 ends. On the other hand, when the fully open limit switch 15D is not actuated (step S3-NO), the MPU 100 opens and closes a control for instructing the start of reverse driving of the motor 15B of the switch 15 in order to open the shutter curtain 8. This is executed for the switch drive control circuit 15A of the machine 15 (step S4).

  Next, the MPU 100 uses the timer circuit 103, which is a timekeeping means, for the time T1 when the control for instructing the start of the reverse drive of the motor 15B of the switch 15 is executed for the switch drive control circuit 15A of the switch 15. And the time T1 is stored in the RAM 101 (step S5).

  Thereafter, the MPU 100 is in a standby state for execution of control by the MPU 100 until a predetermined time T11 (time until the motor 15B of the switch 15 is stably operated) stored in the ROM 102 elapses (step S6-). NO).

  When the predetermined time T11 has elapsed (step S6-YES), the MPU 100 determines whether a pulse is output from the rotary encoder 40 attached to the take-up shaft 11, that is, is incorporated in the control unit 31. It is determined whether or not the number of pulses counted by the counter circuit 104 has increased (step S7).

  If the driving force of the opening / closing machine 15 is transmitted to the take-up shaft 11 by the power transmission means 17, the take-up shaft 11 rotates reversely at a predetermined rotational speed, and from the rotary encoder 40 attached to the take-up shaft 11. A predetermined number of pulses are output. Therefore, the pulses output from the rotary encoder 40 are counted by the counter circuit 104 incorporated in the control unit 31, but when the number of pulses does not change, that is, when the number of pulses has not increased, It can be determined that the winding shaft 11 is not rotating in the reverse direction. On the other hand, when the number of pulses is increasing, it can be determined that the winding shaft 11 is at least rotating in the reverse direction.

  When pulses are output from the rotary encoder 40 (step S7—YES), the number of pulses per unit time counted by the counter circuit 104, that is, the rotational speed of the winding shaft 11 is a predetermined rotational speed ( It is determined whether it is less than the number of pulses per unit time when the winding shaft 11 is rotating normally (step S8).

  When the rotational speed of the winding shaft 11 is equal to or higher than the predetermined rotational speed (step S8—NO), the MPU 100 determines that the winding shaft 11 is normally reversely rotated. In this case, next, the MPU 100 determines whether or not the full open limit switch 15D of the switch 15 is operating (step S9).

  When the fully open limit switch 15D of the switch 15 is operating (step S9-YES), it is determined that the reverse rotation of the winding shaft 11 is normally performed and the shutter curtain 8 is fully open. Can do. Thereafter, the MPU 100 executes control for stopping the reverse drive of the motor 15B of the switch 15 to the switch drive control circuit 15A of the switch 15 (step S10), whereby the opening operation of the shutter curtain 8 is performed. finish.

  On the other hand, when the fully open limit switch 15D of the switch 15 is not actuated (step S9-NO), it can be determined that the opening operation of the shutter curtain 8 continues, and thereafter, the MPU 100 performs the rotary operation. The control after step S7 for determining whether or not a pulse is output from the encoder 40 is repeated.

If no pulse is output from the rotary encoder 40 in step S7 described above (step S7- NO ), it can be determined that the reverse rotation of the winding shaft 11 is not normal, and the MPU 100 opens and closes. Control for stopping the reverse drive of the motor 15B of the machine 15 is executed for the switch drive control circuit 15A of the switch 15 (step S11). For this reason, the control executed by the MPU 100 in this step S11 functions as an opening / closing body movement abnormality preventing means for preventing movement abnormality of the shutter curtain 8 in the closing direction.

  For the same reason as above, even when the rotational speed of the take-up shaft 11 is lower than the predetermined rotational speed in the above-described step S8 (step S8—YES), the MPU 100 is connected to the motor 15B of the switch 15. Control for stopping the reverse drive is executed for the switch drive control circuit 15A of the switch 15 (step S11).

  In this step S11, the MPU 100 causes the timer circuit 103 to measure the time T2 when the control for stopping the reverse drive of the motor 15B of the switch 15 is executed on the switch drive control circuit 15A of the switch 15 by the timer circuit 103. The time T2 is stored in the RAM 101 (step S12).

  Next, the time T1 when the MPU 100 executes the control for starting the reverse drive of the motor 15B of the switch 15 to the switch drive control circuit 15A of the switch 15 which is timed in the above-described step S5. To the time T2 when the MPU 100 executes the control for stopping the reverse drive of the motor 15B of the switch 15 to the switch drive control circuit 15A of the switch 15 that is timed in the above-described step S12. In other words, the time during which the motor 15B of the switch 15 has been driven is calculated, and it is determined whether this required time is less than the predetermined time (step S13).

  Here, the predetermined time refers to the time from when the shutter curtain 8 starts the opening operation to the opening operation to a certain height. Specifically, from the time when the shutter curtain 8 starts the opening operation, immediately after the shutter curtain 8 having the maximum torque applied to the winding shaft is opened, for example, the shutter curtain is wound around the winding shaft one turn. Until the time.

  This predetermined time is not limited to the time until the shutter curtain is wound once on the winding shaft, and the load variation factors such as the winding diameter, the shape of the shutter curtain, the weight, the characteristics of the opening / closing mechanism, and the like It may be determined as appropriate depending on the tendency. Further, the time until the shutter curtain is wound around the take-up shaft may be the amount corresponding to the amount of opening that allows a person to dive through.

  In step S13, when the drive time of the motor 15B of the switch 15 is less than the predetermined time (step S13-YES), the MPU 100 then opens the shutter curtain 8 during the drive time of the motor 15B of the switch 15. It is determined whether the amount is less than a predetermined amount, in other words, whether the rotation amount of the winding shaft 11 (the total number of pulses of the rotary encoder 40 counted by the counter circuit 104) is less than the predetermined amount (step S14).

  When the opening amount of the shutter curtain 8 during the driving time of the motor 15B of the switch 15 is less than the predetermined amount (step S14-YES), the MPU 100 has an abnormal movement from the alarm device 90 in the closing direction of the shutter curtain 8. Control for generating an alarm notifying that the alarm has occurred is executed on the alarm generation instruction circuit 108 incorporated in the control unit 31 (step S23). Thereby, as shown in FIG. 8, an alarm sounds from the speaker 91 of the alarm device 90.

  In this step S23, the alarm sounded from the speaker 91 of the alarm device 90 is a sound (for example, a high-pitched siren sound) notifying that the abnormal movement level in the closing direction of the shutter curtain 8 is high. .

  This is because, when it is determined that the opening amount of the shutter curtain 8 during the driving time of the motor 15B of the opening / closing device 15 is less than a predetermined amount, and there is a person or an object directly under the shutter curtain 8, the shutter curtain This is because, when 8 performs a closing operation that is an abnormal movement in the closing direction, there is a high possibility that a person cannot pass under the shutter curtain 8 or cannot completely remove an object.

  For this reason, the MPU 100 performs an airbag operation instruction in which control for operating the airbag device 70 is incorporated in the control unit 31 in order to prevent an abnormal movement of the shutter curtain 8 in the closing direction after the execution of step S23. This is executed for the circuit 107 (step S24).

  Thereby, the shutter curtain 8 which is going to continue the movement abnormality in the closing direction is prevented from moving in the closing direction due to the expansion of the airbag 71 of the airbag device 70. And after execution of step S24, execution of control of MPU100 is complete | finished.

  In step S13 described above, when the driving time of the motor 15B of the switch 15 is not less than the predetermined time (step S13-NO), the predetermined time T12 stored in advance in the ROM 102, specifically, the switch 15 Until the time until the motor 15B completely stops elapses, the control by the MPU 100 is in an execution standby state (step S17-NO).

  When the predetermined time T12 stored in advance in the ROM 102 has elapsed (step S17-YES), the MPU 100 next determines whether or not a pulse is output from the rotary encoder 40 as in step S7 described above. Is determined (step S18).

  If a pulse is output from the rotary encoder 40 (step S18—YES), the winding shaft 11 rotates forward for some reason, that is, although the reverse drive of the motor 15B of the switch 15 is stopped. Then, it can be determined that there is an abnormality in the movement of the shutter curtain 8 in the closing direction. Thereafter, the MPU 100 performs control for generating an alarm from the alarm device 90 to notify that the shutter curtain 8 is operating abnormally. This is executed for the alarm generation instruction circuit 108 incorporated in the circuit 31 (step S19). As a result, an alarm sounds from the speaker 91 of the alarm device 90, as in step S23 described above.

  In this step S19, the alarm sounded from the speaker 91 of the alarm device 90 is different from the above-described step S23 in that the sound (for example, the middle) is informed that the abnormal movement level in the closing direction of the shutter curtain 8 is medium. Sound siren, etc.).

  This is because when it is determined that the opening amount of the shutter curtain 8 during the driving time of the motor 15B of the switch 15 is not less than a predetermined amount, that is, when the shutter curtain 8 is opened to a certain height position. If there is a person or an object directly under 8, even if the shutter curtain 8 continues to move abnormally in the closing direction, the time required for the person to pass directly under the shutter curtain 8 or the object is removed. This is because there is a relatively long time to do so.

Thereafter, the MPU 100 operates the ratchet mechanism 50 provided on the bracket 16 in order to prevent the winding shaft 11 from rotating forward, in other words, to prevent the shutter curtain 8 from moving abnormally in the closing direction. The control for causing the winding shaft rotation stop instruction circuit 106 incorporated in the control unit 31 to be executed (step S20).
The winding shaft rotation stop instruction circuit 106 energizes the solenoid 60, thereby exciting the internal coil. As a result, the plunger of the solenoid 60 is sucked, and the locking member 62 connected to the plunger is also sucked and retracted. As a result, the arm member 53 that has been prevented by the locking member 62 from locking the locking claw 53A of the arm member 53 of the ratchet mechanism 50 to the ratchet 51 has the biasing force of the spring 55 as shown in FIG. Therefore, the locking claw 53A of the arm member 53 is locked to the ratchet 51. As a result, normal rotation of the winding shaft 11 is prevented, and abnormal movement of the shutter curtain 8 in the closing direction is prevented.

  Thereafter, until the predetermined time T13 stored in advance in the ROM 102 elapses (step S21-NO), the MPU 100 is in an execution standby state.

  When the predetermined time T13 stored in advance in the ROM 102 has elapsed (step S21-YES), the control unit 31 again outputs a pulse from the rotary encoder 40 as in the above-described steps S7 and S18. It is determined whether or not (step 22).

  In a state where no pulse is output from the rotary encoder 40 (step S22-NO), the control by the MPU 100 is in an execution standby state, and the operation of the open / close switch 20 in this state is invalidated, and an administrator operation switch (not shown) Only operation is possible.

  On the other hand, when a pulse is output from the rotary encoder 40 (step S22-YES), the forward rotation of the winding shaft 11, that is, the abnormal movement of the shutter curtain 8 in the closing direction continues for some reason. Therefore, it can be determined that the movement abnormality level in the closing direction of the shutter curtain 8 is high. For this reason, thereafter, the MPU 100 executes the control of the above-described step S23 and step S24.

  When the opening amount of the shutter curtain 8 during the driving time of the motor 15B of the switch 15 is not less than the predetermined amount in step S14 described above (step S14-NO), the abnormal movement level in the closing direction of the shutter curtain 8 is determined. Can be determined to be advanced, and thereafter, the MPU 100 executes the control after the above-described step S19.

  If no pulse is output from the rotary encoder 40 in step S18 described above (step S18—NO), the rotation of the winding shaft 11 is stopped by stopping the driving of the motor 15B of the switch 15. Can be determined.

  In this case, the MPU 100 determines whether there is an obstacle in the closing direction of the shutter curtain 8 (step S25). As described above, when there is an obstacle in the closing direction of the shutter curtain 8, a seat board switch which is an obstacle detection switch (not shown) of the obstacle sensing device 80 provided on the seat board 10 of the shutter curtain 8 becomes an obstacle. This causes the obstacle sensing signal 84 to be transmitted from the transmitter 82 of the obstacle sensing device 80 to the receiver 83. The obstacle sensing signal 84 received by the receiver 83 is then converted into an electrical signal and transmitted to the MPU 100. In step S25, the MPU 100 detects the obstacle sensing signal converted into an electrical signal. Judge whether or not.

  As shown in FIG. 8, when there is an obstacle 85 in the closing direction of the shutter curtain 8 and the MPU 100 detects an obstacle sensing signal (step S25-YES), the MPU 100 thereafter Control for operating the ratchet mechanism 50 provided in the bracket 16 is stopped in the control unit 31 in order to prevent the forward rotation of the winding shaft 11 in the same manner as in step S20. This is executed for the instruction circuit 106 (step S26).

  Further, since there is an obstacle in the closing direction of the shutter curtain 8, it can be determined that the abnormal movement level in the closing direction of the shutter curtain 8 is high (highest urgency), so step S26 is performed. After being executed, the MPU 100 executes the control after step S23 described above.

  On the other hand, when the MPU 100 does not detect the obstacle detection signal (step S25-NO), it can be determined that the abnormal movement level in the closing direction of the shutter curtain 8 is low. Control for generating an alarm notifying that the shutter curtain 8 is operating abnormally is executed on the alarm generation instruction circuit 108 incorporated in the control unit 31 (step S27), and thereafter the control of the MPU 100 is controlled. Execution ends.

  In this step S27, the alarm sounded from the speaker 91 of the alarm device 90 is a sound that informs that the abnormal movement level in the closing direction of the shutter curtain 8 is low (for example, a low-pitched siren sound). Yes.

  In FIG. 7, in step S13, the driving time of the motor 15B of the switch 15 is less than a predetermined time, and in the next step S14, the shutter curtain 8 is driven for the driving time of the motor 15B of the switch 15. When the opening amount is less than the predetermined amount, it is determined that the movement abnormality level in the closing direction of the shutter curtain 8 is high, and the control after step S23 is executed. S14 is deleted, and in step S13, it is determined whether or not the driving time of the motor 15B of the switch 15 is less than a predetermined time, and the opening amount of the shutter curtain 8 during the driving time of the motor 15B of the switch 15 is a predetermined amount. If any of the conditions are met, the shutter curtain 8 is closed. The movement abnormal level in the direction determined to be highly, may be performed a control of step S23 and subsequent foregoing.

  As described above, the control unit 31 detects the rotation direction of the winding shaft 11 by discriminating the phases of the two-phase pulses of the A phase and the B phase output from the rotary encoder 40. 105 is incorporated.

  Therefore, in step S8 in the flowchart of FIG. 6 described above, in determining whether the rotation speed of the winding shaft 11 is less than the predetermined rotation speed, the rotation direction of the winding shaft 11 is the forward rotation direction (shutter). It may be determined whether or not the direction in which the curtain 8 is extended). That is, in step S8, if the rotational speed of the winding shaft 11 is less than a predetermined rotational speed, or if the rotational direction of the winding shaft 11 is a normal rotation direction, the shutter curtain 8 is not moved in the closing direction. It may be determined that there is, and the processing after step S11 may be performed.

  Further, in step S18 and step S22 in the flowchart of FIG. 7 described above, it is determined whether or not the rotation direction of the winding shaft 11 is a normal rotation direction in determining whether or not a pulse is output from the rotary encoder 40. May be added. That is, in step S18 and step S22, if a pulse is output from the rotary encoder 40 or if the rotation direction of the winding shaft 11 is a normal rotation direction, it is determined that there is an abnormality in movement of the shutter curtain 8 in the closing direction. You may make it do.

  In the present embodiment described above, the abnormal operation detection device 30 includes the rotary encoder 40 and the counter circuit 104 that constitute the opening / closing device operation state detection means for detecting the operation state of the opening shutter device 1.

  For this reason, according to the present embodiment, even if a movement abnormality in the closing direction of the shutter curtain 8 occurs immediately after the shutter curtain 8 is opened, the movement abnormality in the closing direction can be detected more reliably. It becomes possible.

  Further, the MPU 100 of the control unit 31 that executes at least the control for opening the shutter curtain 8 with respect to the switch 15 has an abnormal operation state of the shutter curtain 8 based on the state of the pulse output from the rotary encoder 40. If the operation state of the shutter curtain 8 is determined to be abnormal, the predetermined control for the abnormal movement of the shutter curtain 8 in the closing direction is executed, so that the movement of the shutter curtain 8 in the closing direction is abnormal. Appropriate measures can be taken after detection.

  For this reason, according to this embodiment, the safety of the shutter curtain 8 can be further improved during the opening / closing operation of the shutter curtain 8, particularly after the shutter curtain 8 is opened.

  In the present embodiment, when the MPU 100 determines that there is an abnormality in the movement of the shutter curtain 8 in the closing direction based on the state of the pulse output from the rotary encoder 40, the movement abnormality in the closing direction of the shutter curtain 8 is urgently determined. The ratchet mechanism 50 and the airbag device 70 are provided as an opening / closing body movement abnormality emergency prevention means for preventing the opening and closing body.

  For this reason, according to the present embodiment, it is possible to prevent the shutter curtain 8 from continuing the movement abnormality in the closing direction after the MPU 100 determines that the movement abnormality in the closing direction of the shutter curtain 8 is present.

  Furthermore, according to the present embodiment, when the MPU 100 determines that the operation state of the shutter curtain 8 is abnormal, the alarm is an opening / closing body movement abnormality notification means for notifying that the operation state of the shutter curtain 8 is abnormal. A device 90 is provided.

  For this reason, according to the present embodiment, a person such as an administrator can quickly know that the operation state of the shutter curtain 8 is abnormal, and thereby the opening in which the operation state of the shutter curtain 8 is abnormal. It is possible to promptly take appropriate measures against abnormal movement in the closing direction of the shutter curtain 8 by rushing to the shutter device 1 for a part.

  Further, in the present embodiment, when the MPU 100 determines that there is an abnormality in the movement of the shutter curtain 8 in the closing direction, it is an obstacle detection means for detecting whether there is an obstacle in the closing direction of the shutter curtain 8. An obstacle sensing device 80 is provided.

  For this reason, according to the present embodiment, when there is an abnormality in the movement of the shutter curtain 8 in the closing direction, it is possible to grasp whether there is an obstacle in the closing direction of the shutter curtain 8 and the obstacle. If it exists, appropriate measures can be taken.

  Further, in the present embodiment, the required time from the time when the MPU 100 performs the control for opening the shutter curtain 8 to the opening / closing device 15 to the time when the MPU 100 determines that there is an abnormality in the movement of the shutter curtain 8 in the closing direction. The timer circuit which is a time measuring means for measuring time is provided.

  For this reason, according to the present embodiment, the MPU 100 sets the abnormal movement level in the closing direction of the shutter curtain 8 based on the opening amount of the shutter curtain 8 within the required time counted by the timer circuit 103 to an altitude, a medium level, It is possible to execute the control in accordance with the determined abnormal level by determining the low three levels. That is, it is possible to make a difference in the measures for the shutter curtain 8 based on the abnormal movement level of the shutter curtain 8 in the closing direction.

  FIG. 9 shows another embodiment of the abnormal operation detection device 30 (hereinafter, the above embodiment is referred to as the first embodiment and the present embodiment is referred to as the second embodiment). It is a block diagram of the operation | movement detection apparatus 30 and the switch 15, and is a figure similar to above-mentioned FIG. Hereinafter, differences from the first embodiment will be described.

  As shown in FIG. 9, in this embodiment, in addition to the rotary encoder 40 and the counter circuit 104 constituting the switchgear operation state detecting means in the first embodiment, the second switchgear operation is further performed. State detection means is provided.

  The second opening / closing device operating state detection means includes a DC generator 120 attached to the seat plate 10 which is an end member of the shutter curtain 8 and a current direction determination circuit which is a current direction determination means incorporated in the control unit 31. 109, and a power measurement circuit 110 that is a power measurement means.

  FIG. 10 is a horizontal sectional view of the guide rail 13 which is a guide member of the shutter curtain 8, and is the same diagram as FIG. FIG. 11 is an enlarged perspective view of the DC generator 120.

  As shown in FIGS. 10 and 11, the seat plate 10 of the shutter curtain 8 includes a main body 10A, a first extending member 10B that is a rod-like member extending from the main body 10A to the inside of the guide rail 13, and this The second extending member 10C, which is a cylindrical member extending from the first extending member 10B to the inside of the guide rail 13, and a spring 10D attached to the outer peripheral portion of the second extending member 10C.

  The DC generator 120 includes a main body 121 and a pinion 123 whose outer peripheral portion has a tooth shape. The main body 121 includes a magnet and a coil (not shown). The main body 121 is formed with a through hole 121A penetrating in the width direction that is the left-right direction of the shutter curtain 8, and the second extending member of the seat plate 10 is inserted into the through hole 121A. . The main body 121 is attached with a lead wire 122 that transmits a current generated from the DC generator 120 to the control unit 31.

  A rack member 124 is attached to a portion where the side surface portion 13B and the bottom surface portion 13C of the guide rail 13 intersect each other over the entire length of the guide rail 13 in the vertical direction. Teeth that mesh with the teeth of the pinion 123 of the DC generator 120 are formed on the inner surface of the rack member 124 in the width direction of the shutter curtain 8. The teeth of the pinion 123 of the DC generator 120 are always meshed with the teeth of the rack member 124 by the biasing force of the spring 10D attached to the second extending member 10C of the seat plate 10.

  For this reason, as shown in FIG. 11, when the shutter curtain 8 opens in the direction of arrow E, the DC generator 120 attached to the seat plate 10 also rises in the direction of arrow E. When the teeth of the pinion 123 mesh with the teeth of the rack member 124, the pinion 123 rotates in the direction of arrow F.

  As a result, an induced current and an induced electromotive force are generated inside the main body 121 of the DC generator 120, and the generated induced current and the induced electromotive force are incorporated into the control unit 31 via the lead wire 122. The signal is sent to the direction determination circuit 109 and the power measurement circuit 110 (including an AD conversion circuit (not shown)).

  Note that the direction of the induced current generated in the DC generator 120 changes depending on the direction in which the pinion 123 rotates. That is, the sign (positive / negative) of the current changes depending on the moving direction of the shutter curtain 8.

  The current direction discriminating circuit 109 determines the direction of the current generated by the DC generator 120, so that the MPU 100 can grasp whether the shutter curtain 8 is opening or closing. Become. That is, the MPU 100 can grasp the moving direction of the shutter curtain 8.

  Further, since the power measurement circuit 110 can measure the power per unit time from the current and voltage generated in the DC generator 120, the MPU 100 can move the shutter curtain 8 from the measured power per unit time. The speed can be grasped. Further, the amount of movement of the shutter curtain 8 can be grasped from the amount of power that can be calculated from the current and voltage generated by the DC generator 120.

  The flow of control executed by the control unit 31 of the abnormal operation detection device 30 according to this embodiment is basically the same as the flowcharts of FIGS. 6 and 7 described in the first embodiment, and the flowchart is Omitted. Hereinafter, differences from the first embodiment will be described with reference to the flowcharts of FIGS. 6 and 7 described above.

  In the present embodiment, in step S8 in the flowchart of FIG. 6 described above, the movement speed of the shutter curtain 8 is less than the predetermined movement speed in determining whether the rotation speed of the winding shaft 11 is less than the predetermined rotation speed. Judgment of whether or not is added. That is, in step S8, when the rotational speed of the winding shaft 11 is less than the predetermined rotational speed or the moving speed of the shutter curtain 8 is less than the predetermined moving speed, the shutter curtain 8 is moved in the closing direction. It is determined that there is a movement abnormality, and the processing after step S11 is performed.

  Further, in step S18 and step S22 in the flowchart of FIG. 7 described above, in order to determine whether or not a pulse is output from the rotary encoder 40, the rotation direction of the winding shaft 11 is the forward rotation direction (the shutter curtain 8 is extended). (The discrimination result of the pulse discrimination circuit 105 is used for determination). That is, in step S18 and step S22, if a pulse is output from the rotary encoder 40 or the rotation direction of the winding shaft 11 is a normal rotation direction, there is an abnormality in the movement of the shutter curtain 8 in the closing direction. It comes to judge. Instead of determining whether the rotation direction of the winding shaft 11 is a forward rotation direction, it is determined whether the moving direction of the shutter curtain 8 is the closing direction (using the determination result of the current direction determination circuit 109). ) May be added.

  Further, the opening amount of the shutter curtain 8 referred to in the determination in step S14 in the flowchart of FIG. 7 is calculated from the amount of power generated by the DC generator 120.

  In the present embodiment, information such as the rotation speed, rotation direction, and rotation amount of the winding shaft 11 is not referred to, and only the information such as the movement speed, movement direction, and movement amount of the shutter curtain 8 is used. You may make it determine whether an operation state is abnormal.

  According to the present embodiment (second embodiment) described above, for some reason, the rotary encoder 40 and the counter circuit 104 constituting the first opening / closing device operating state detection means cause an abnormal movement of the shutter curtain 8 in the closing direction. Even if it cannot be detected, the DC generator 120 constituting the second opening / closing device operating state detection means provided on the seat plate 10 of the shutter curtain 8 and the current direction determination incorporated in the control unit 31 By means of the current direction discriminating circuit 109 and the power measuring circuit 110 which are means, it is possible to grasp the moving speed and moving direction of the shutter curtain 8, as well as the moving amount, etc. It is possible to determine whether or not the occurrence has occurred from various directions.

  For this reason, according to the present embodiment, it is possible to more reliably detect an abnormal movement of the shutter curtain 8 in the closing direction.

  In the present embodiment, a two-phase rotary encoder for detecting the rotation speed, rotation direction, rotation speed, etc. of the pinion may be attached to the DC generator 120. Thereby, the moving speed, moving direction, moving amount, etc. of the shutter curtain 8 can be detected.

  In the first and second embodiments described above, a DC generator that has the same structure, mechanism, etc. as the DC generator 120 and generates electric power by rotating the winding shaft 11 can be attached to the winding shaft 11. Good. Thereby, the rotation speed, rotation direction, movement amount, etc. of the winding shaft 11 can be detected.

  In addition, in the control part 31 of 1st and 2nd embodiment demonstrated above, control is performed by software, However Control may be performed by hardware, such as a logic circuit.

It is a whole front view of the shutter device for openings provided with the abnormal operation detection device concerning the 1st and 2nd embodiments. 1 is a configuration diagram of an abnormal operation detection device and a switch according to a first embodiment. It is a partially expanded perspective view of a bracket. FIG. 5 is a cross-sectional view taken along line S4-S4 of FIG. 1 and is a horizontal cross-sectional view of a guide rail provided with an airbag device. In FIG. 4, it is a figure which shows a state when the airbag of an airbag apparatus expand | swells. It is a flowchart figure which shows the flow of control which the control part of the abnormal operation detection apparatus which concerns on 1st Embodiment performs when opening operation | movement of a shutter curtain is instruct | indicated. FIG. 7 is a flowchart showing a continuation of FIG. 6. In FIG. 1, a movement abnormality in the closing direction occurs in the shutter curtain during the opening operation, and at this time, an obstacle is present in the closing direction. It is a block diagram of the abnormal operation detection apparatus and switch concerning a 2nd embodiment. It is a horizontal sectional view of the guide rail provided with the direct current generator with which the abnormal operation detection device according to the second embodiment is provided, and is a view similar to FIG. It is an expansion perspective view of the DC generator with which the abnormal operation detection apparatus which concerns on 2nd Embodiment is provided.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Shutter device for opening part which is opening and closing device 8 Shutter curtain 11 which is opening and closing body Winding shaft 13 Guide rail 15 which is guide member Opening and closing device 30 Abnormal operation detecting device 31 Control unit 80 Obstacle sensing device which is an obstacle sensing means 90 Alarm Device 103 as an Opening / Closing Body Movement Anomaly Notification Unit 103 Timer Circuit 109 as a Timekeeping Unit Current Direction Discriminating Circuit 120 as a Current Direction Discriminating Unit Constructing a Switch Operating State Detection Unit DC Power Generation Constructing a Switch Operating State Detection Unit Machine

Claims (12)

An opening / closing body that is openable and closable in a direction having a component in the vertical direction, and that includes an opening / closing body in which the upper direction is the opening direction and the lower direction is the closing direction, and a switch that at least opens the opening / closing body. An abnormal operation detection device for an opening / closing body that detects an abnormal operation of the opening / closing body in the opened / closed device, the control unit executing at least control for opening the opening / closing body to the opening / closing device, and the opening / closing device And an opening / closing device operating state detecting means for detecting an operating state of the opening / closing body in the vertical movement direction in the opening / closing device, and the control unit executes control for opening the opening / closing body to the opening / closing device, and this opening operation during control execution of, when the vertical movement direction of the closing body is detected to have changed from above to downward by the switchgear operating state detecting means, wherein, the opening and closing It determines movement abnormality and in the closing direction, the closing body abnormal operation detection device of the closing body and executes a predetermined control to the movement abnormality in the closing direction. 2. The abnormal operation detecting device for an opening / closing body according to claim 1, wherein the opening / closing operation is performed even if a time from when the control unit starts the opening operation of the opening / closing device until the opening / closing device operates stably is elapsed. When the upward movement of the opening / closing body is not detected by the device operating state detection means, the control unit determines that there is an abnormality in movement of the opening / closing body in the closing direction, and responds to an abnormality in movement of the opening / closing body in the closing direction. An apparatus for detecting an abnormal operation of an opening / closing body, characterized by executing predetermined control . The abnormal operation detecting device for an opening / closing body according to claim 1 or 2 , wherein at least a time when the control unit executes a control for driving the opening / closing device to open the opening / closing body. A timing means for timing a certain switch operating control start time and a movement abnormality determination time that is a time when the control unit determines that there is a movement abnormality in the closing direction of the opening and closing body; Determines a movement abnormality level in the closing direction of the opening / closing body based on a required time from the switch drive control start time to the movement abnormality determination time, and performs predetermined control according to the determined movement abnormality level. A device for detecting an abnormal operation of the opening and closing body, characterized by: 4. The abnormal operation detection device for an opening / closing body according to claim 3 , wherein the control unit is configured to open and close the opening / closing body based on an opening amount of the opening / closing body within a required time from the switch drive control start time to the movement abnormality determination time. An apparatus for detecting an abnormal operation of an opening / closing body, characterized by determining an abnormal movement level in a closing direction of a body and executing a predetermined control according to the determined abnormal movement level . The abnormal operation detecting device for an opening / closing body according to any one of claims 1 to 4 , wherein the opening / closing device has a winding shaft that winds and unwinds the opening / closing body, and the opening / closing body is in contact with the winding shaft. A device for detecting an abnormal operation of an opening / closing body, wherein the opening / closing body is opened / closed by being wound and drawn out. 6. The abnormal operation detecting device for an opening / closing body according to claim 5 , wherein the opening / closing device operation state detecting means is output from a two-phase rotary encoder attached to the winding shaft and the two-phase rotary encoder. And a pulse phase discriminating means for discriminating the phases of the two-phase pulses, wherein the vertical movement direction of the opening / closing body is determined based on the discrimination result of the pulse phase discrimination means Detection device. The abnormal operation detecting device for an opening / closing body according to claim 5 or 6 , wherein the opening / closing device operating state detecting means is attached to the winding shaft and generates electric power by rotation of the winding shaft; And a current direction discriminating means for discriminating the direction of the current output from the DC generator, and the control unit judges the vertical movement direction of the opening / closing body based on the discrimination result of the current direction discriminating means. An apparatus for detecting an abnormal operation of an opening / closing body. The abnormal operation detecting device for an opening / closing body according to any one of claims 1 to 7 , wherein the opening / closing device operating state detecting means is a width direction of an end member provided at a front end of the opening / closing body in the closing direction of the opening / closing body. A DC generator that is attached to at least one of both end portions and generates electric power by relative movement between the end member and a guide member that guides the opening / closing operation of the opening / closing member based on the opening / closing operation of the opening / closing member; It is configured to include a current direction determining means for determining a direction of a current output from the DC generator, wherein the control unit, that determines the vertical movement direction of the closing body by the discrimination result of the current direction discrimination means An apparatus for detecting an abnormal operation of an opening / closing body as a feature.   The abnormal operation detecting device for an opening / closing body according to any one of claims 1 to 8, wherein the control unit moves in a closing direction of the opening / closing body based on an operating state of the opening / closing device detected by the opening / closing device operating state detecting means. An opening / closing body abnormal operation detecting device, comprising: an opening / closing body movement abnormality preventing means for preventing a movement abnormality in the closing direction of the opening / closing body when it is determined that there is a movement abnormality.   The abnormal operation detecting device for an opening / closing body according to any one of claims 1 to 9, wherein the control unit moves in a closing direction of the opening / closing body based on an operating state of the opening / closing device detected by the opening / closing device operating state detecting means. An opening / closing body abnormal operation detecting device comprising an opening / closing body movement abnormality notifying means for notifying a movement abnormality in the closing direction of the opening / closing body when it is determined that there is a movement abnormality.   The abnormal operation detection device for an opening / closing body according to any one of claims 1 to 10, wherein the control unit moves in a closing direction of the opening / closing body based on an operation state of the opening / closing device detected by the opening / closing device operation state detecting means. An abnormal operation detecting device for an opening / closing body, comprising obstacle detection means for detecting whether there is an obstacle in the closing direction of the opening / closing body when it is determined that there is a movement abnormality. An opening / closing body that is openable and closable in a direction having a component in the vertical direction, and that includes an opening / closing body in which the upper direction is the opening direction and the lower direction is the closing direction, and a switch that at least opens the opening / closing body. A method for detecting an abnormal operation of the opening / closing body for detecting an abnormal operation of the opening / closing body in the opening / closing device to be operated,
Executing control for opening and closing the opening / closing body with respect to the opening / closing device, detecting an operating state of the opening / closing body in a vertical movement direction during drive control of the opening / closing device, and detecting the opening / closing Determining a change in the vertical movement direction of the body, and when the detected vertical movement direction of the opening / closing body has changed from an upward direction to a downward direction, it is determined that there is an abnormal movement in the closing direction of the opening / closing body, Performing a predetermined control on the opening / closing body, and detecting an abnormal operation of the opening / closing body.

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