JP5502638B2 - Switchgear - Google Patents

Description

  The present invention relates to an opening / closing device in which an object on the opening / closing body closing direction side is detected by a seat plate sensing portion, and more particularly to an opening / closing device suitable as a shutter device.

Conventionally, this type of opening and closing device is provided with a seat plate sensing unit that senses and contacts an object closer to the closing direction than the opening and closing body at the closing direction end of the opening and closing body, and the seat plate sensing unit during the closing operation of the opening and closing body When touching an obstacle or the like, the opening / closing body is reversed by a predetermined amount (hereinafter referred to as a touch-up operation).
In such an opening / closing apparatus, for example, as described in Patent Document 1, in order to prevent a gap from being generated between the opening / closing body and the floor surface or the like due to the touch-up operation when the opening / closing body is fully closed. When the closing direction end of the opening / closing body during the closing operation reaches a predetermined range before full closing, the seat plate sensing unit is invalidated and the closing operation is performed for a preset timer time. Accordingly, the closing operation is stopped.
Further, in the opening / closing apparatus, when the closing direction end of the opening / closing body is located within a predetermined range before the full closing and the opening / closing body stops, the closing switch is operated and an overrun state (opening / closing body closing operation) In order to prevent an excessive load from being continuously applied to the open / close body or the open / close body being reversely wound around the take-up shaft) after the fully closed state, the operation by the close switch is ignored.

However, according to the prior art, when the closing direction end of the opening / closing body is located within the predetermined range before the full closing and the opening / closing body stops, the closing direction end of the opening / closing body and the floor surface, etc. A slight gap may be formed between them, but the opening / closing body does not close even when the closing switch is operated to close the gap.
Therefore, in order to close the opening by closing the opening / closing body, the opening / closing body is once raised by operating the opening switch, and the end of the opening / closing body in the closing direction escapes from the predetermined range before the full closing. It is necessary to stop by operating the stop switch at the time. Then, the opening / closing body is lowered by operating the closing switch, and the lowering may be stopped by counting up the timer.
However, when performing the operation using the open switch and the stop switch, the operator does not know how much to lift the opening / closing body to escape from the predetermined range before the full closure, and only relies on the intuition for the operation. Absent. In addition, at least two operations (open switch operation and stop switch operation) are required to raise and stop the operation, which is troublesome. In addition, for the purpose of fully closing the opening / closing body, an open switch for performing an operation opposite to the closing operation has to be operated, so that the operator may be confused in the operation.

Japanese Patent Laid-Open No. 10-306672

  This invention makes it an example of a subject to cope with such a problem. That is, when the closing direction end of the opening / closing body during the closing operation reaches a predetermined range before the full closing, it is considered that the closing operation is stopped when the closing operation is performed for a preset timer time, and the closing operation is stopped. In the opened / closed device, when the open / close body stops in a state where the closing direction end portion of the open / close body is located within the predetermined range before full closing, until the open / close body escapes from the predetermined range without relying on intuition. It is an object of the present invention that an opening operation can be performed, an operation for the operation is easy, an operator is not confused in an operation, and the like.

  In order to achieve such an object, the technical means according to the present invention includes at least the following configuration.

  An opening / closing body that performs a closing operation by sliding an end portion in the closing direction, a position detection unit that detects that the closing direction end portion of the opening / closing body is within a predetermined range before full closing, and a closure of the opening / closing body A seat plate sensing unit that senses that the direction end is in contact with an object on the closing direction side, and a control unit that controls the opening and closing body. In the opening / closing apparatus that starts counting a predetermined time by a timer when there is a detection signal by the unit, and stops the closing operation by assuming that the opening / closing body is fully closed by counting up the timer, When a stop command is input in a state in which the control unit is in a closing operation of the opening and closing body and there is a detection signal input by the position detection unit before all closing, the closing operation of the opening and closing body and the To timer And then the closing operation of the opening / closing body is restarted on the condition that a closing command is input, and the opening / closing body is provided on the condition that there is a sensing signal of the seat plate sensor during the closing operation. , And then the opening / closing body is stopped on the condition that the detection signal from the position detection unit before all closing is gone.

By having such characteristics, the present invention has the following effects.
When the end of the opening / closing body in the closing direction enters the predetermined range before the full closing and the closing operation of the opening / closing body is stopped, when the opening / closing body is to be fully closed, a closing command by a closing switch operation or the like is issued. If it occurs, the opening / closing body automatically reverses after the closing operation, and then opens to a position slightly on the opening direction side from the predetermined range. Therefore, the operation can be performed accurately without relying on intuition, and the operation for the operation is easy and only a single operation of the closed switch. Moreover, since the operator operates the closing switch for the purpose of fully closing the opening / closing body, the operation is less likely to be confused.
When the opening / closing body that has been opened and stopped to a position slightly closer to the opening direction than the predetermined range is to be fully closed, a closing command such as a closing switch operation may be issued. The opening / closing body performs a closing operation, and this closing operation can be stopped at a position considered to be fully closed by counting up the timer.

It is a front view which shows an example of the switchgear concerning this invention. It is a flowchart which shows an example of the control action by a control part. It is a flowchart which shows the other example of control operation by a control part. It is a flowchart which shows the other example of control operation by a control part.

  The opening / closing device according to the present invention is particularly effective when applied to a form (for example, a shutter device) in which the opening / closing body is wound and stored on a winding shaft, but the opening / closing body is wound around the winding shaft. It is also possible to apply to the form (for example, an overhead door apparatus etc.) which accommodates in the open direction side without taking.

  Examples of the form of the opening / closing body include, for example, a sheet-like body, a net-like body, a plurality of slats and pipes, or a form in which a panel is continuously provided in the opening / closing direction, and the above-described sheet-like body, net-like body, The form etc. which combine a slat, a pipe, and a panel suitably are mentioned.

  In addition, the position detection unit before full closing includes, for example, a closing direction end portion of the opening / closing body at a predetermined position before full closing based on a rotation amount of a driving source for closing the opening / closing body, a winding shaft for feeding the opening / closing body, or the like. It is configured to detect that it is within a range, or the opening / closing body provided in a fixed part such as a guide rail and within the predetermined range is a contact-type or non-contact-type sensor (for example, a micro switch or a proximity switch) Etc.) is included.

  In addition, the stop command and the close command may be signals that are issued, for example, by operation of an operation switch, a remote controller, a portable terminal, or the like. In a preferable aspect with particularly good operability, the stop command and the close command are issued when a push button switch is pressed. Signal.

In a preferred embodiment according to the present invention, the controller closes the opening / closing body following the stop of the opening operation.
According to this embodiment, the opening / closing body stopped slightly on the opening direction side from the predetermined range before full closing can be automatically closed. During the closing operation, the timer starts counting for a predetermined time when a detection signal is received from the position detection unit before closing, and the closing operation stops at a position considered to be fully closed by counting up the timer. .

In a further preferred form, the control unit is configured to perform the closing operation of the opening / closing body, and when the stop signal is not input in the state where the detection signal is input by the position detection unit before closing, the seat plate On the condition that there is no sensing signal from the sensing unit and the timer has counted up, the opening / closing body is stopped and the stopped state is regarded as an abnormal state, and there is a sensing signal from the seat plate sensing unit and the timer counts. The opening / closing body is stopped on the condition that it is up, and the stop state is regarded as a normal fully closed stop state.
According to this embodiment, for example, when the seat plate sensing unit fails, the state can be recognized as an abnormal state.

  In the present embodiment, “counting” by a timer means that the timer counts time. Further, “counting up” of the timer means that the count by the timer has reached a predetermined time set in advance.

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

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The opening / closing device includes an opening / closing body 10 that opens and closes by sliding an end portion in the closing direction, a guide rail 20 that surrounds and guides the end portion of the opening / closing body 10 in the width direction (left-right direction in FIG. 1), And a winding device 30 that opens and closes the opening / closing body 10 to open and close the opening / closing body 10, and has a feature in control when the closing direction end of the opening / closing body 10 is within a predetermined range H before full closing. Yes.

  The opening / closing body 10 constitutes the opening / closing body main body 11 by connecting a plurality of so-called slats 11a formed by bending a horizontally-long substantially rectangular metal plate so as to rotate between the vertically adjacent slats 11a, 11a. The movable seat plate 12 is connected to the end of the opening / closing body 11 in the closing direction (the lower end in the illustrated example).

The movable seat plate 12 is a member that extends over substantially the entire length in the opening / closing body width direction, and projects downward from the lower end of the opening / closing body body 11. The movable seat plate 12 moves freely by a predetermined amount in the opening / closing body opening / closing direction (vertical direction in FIG. 1) relative to the opening / closing body main body 11.
For example, the movable seat plate 12 may be moved in the vertical direction by engaging the upper end portion of the movable seat plate 12 with the lower end portion of the opening / closing body main body 11 so as to slide a predetermined amount in the vertical direction.

Between the movable seat 12 and the opening / closing body 11, a sensor (such as a micro switch or a proximity switch not shown) that senses that the movable seat 12 has moved upward relative to the opening / closing body 11. ) Is provided.
The movable seat plate 12 and the sensor function as a seat plate sensing unit that senses that the closing direction end of the opening / closing body 10 is in contact with an object on the closing direction side. That is, when the movable seat plate 12 moves in the opening direction relative to the opening / closing body main body 11 due to the contact of an object with the end of the opening / closing body 10 in the closing direction, the contact of the sensor is turned on. Further, when the movable seat plate 12 moves in the closing direction relative to the opening / closing body main body 11 by removing the object or the like, the contact of the sensor is turned off.
In this configuration, the contact point of the sensor may be turned on when the movable seat plate 12 moves the entire movable range of the movable seat plate 12, or when the movable seat plate 12 moves the movable range by a predetermined percentage. It is good also as an aspect which a contact turns on.

  The guide rail 20 is a member having a substantially U-shaped cross section that surrounds an end of the opening / closing body 10 in the width direction, and a contact target portion p (for example, a floor surface, the ground, or a frame member) seated by the opening / closing body 10. Etc.) and the winding device 30.

  In addition, the winding device 30 includes a winding shaft 32 that winds and unwinds the opening / closing body 10 in a storage case 31 in which an opening for allowing the opening / closing body 10 to appear and retract on the lower side, and the winding shaft. An opening / closing device 40 that drives and rotates 32, and a control unit 50 that controls the opening / closing body 10 by controlling the opening / closing device 40.

  The switch 40 is a direct-current or alternating-current electric motor serving as a drive source for closing the open / close body 10, and power transmission for adjusting the rotational force of the electric motor to an appropriate rotational speed and torque and transmitting it to the winding shaft 32. A mechanism (specifically, a gear or the like) and a counter-type limit switch 41 that outputs a contact signal when the rotation amount of the output shaft of the power transmission mechanism reaches a predetermined value are provided.

The counter-type limit switch 41 is a well-known mechanism that combines a counter mechanism that mechanically counts the rotation amount of the output shaft and a micro switch that operates when the count value of the counter mechanism reaches a predetermined value. It is. The counter-type limit switch 41 is a position detection unit before full closure that senses that the closing direction end of the opening / closing body 10 (more specifically, the lower end of the movable seat 12) is within a predetermined range H before full closure. Function as.
That is, when the closing direction end of the opening / closing body 10 enters the predetermined range H before the full closing by the closing operation, the contact of the counter type limit switch 41 is turned on. Further, when the closing direction end of the opening / closing body 10 moves to the opening direction side (upward side in the illustrated example) from the predetermined range H before full closing by the opening operation, the contact of the counter type limit switch 41 is turned off. Become.

Further, the control unit 50 electronically processes electrical signals input from the position detection unit before closing, the seat plate detection unit, the operation unit 51, and the like based on a program, and according to the processing result. The control circuit supplies the control power to the switch 40 to cause the switch 40 to rotate forward, reverse, stop, etc.
The controller 50 is preferably configured by a programmed logic circuit used in, for example, a microcomputer or a programmable controller so that the circuit configuration, setting values, and the like can be easily changed in accordance with the field conditions. A circuit using a relay circuit or other electronic circuit can also be used.

  The operation unit 51 is a switch box having three switches, an open switch 51a, a stop switch 51b, and a close switch 51c, and is electrically wired so as to input a contact signal of each switch to the control unit 50.

  Next, an example of the control operation for the switchgear having the above configuration will be described in detail based on the flowcharts shown in FIGS.

  The flowchart of FIG. 2 shows processing of the control unit 50 that is started in a state where the opening / closing body 10 is closing on the opening direction side with respect to the predetermined range H before full closing.

In step 1, input of a sensing signal by the position detection unit (counter type limit switch 41) before the full-close position is awaited, and when the sensing signal is inputted, the process proceeds to the next step 2.
In step 2, counting of a predetermined time by the lower limit timer is started.

Here, the lower limit timer may use a timer function on the control circuit of the control unit 50 or a timer relay provided separately.
The predetermined time is set to be approximately equal to the closing operation time from when the closing direction end of the opening / closing body 10 enters the predetermined range H to the fully closed position.

  That is, according to the steps 1 and 2, when the closing direction end of the opening / closing body 10 during the closing operation enters the predetermined range H before the full closing, counting of the predetermined time by the lower limit timer is started.

  Next, in step 3, it is determined whether or not a stop command is input by operating the stop switch 51b or the like. If there is a stop command input, the process proceeds to step 4; otherwise, the process proceeds to step 3a. Migrate processing.

In step 4, the closing operation of the opening / closing body 10 is stopped by stopping the opening / closing device 40.
In step 5, counting by the lower limit timer is stopped.

  In the next step 6, the process waits for the input of the closing command by the operation of the closing switch 51 c or the like, and when the closing command is input, the process proceeds to the next step 7.

  In step 7, the closing operation of the opening / closing body 10 is started by driving the opening / closing device 40.

  In step 8, the input of a sensing signal by the seat plate sensing unit (such as the movable seat plate 12) is waited. If there is an input of the sensing signal, the process proceeds to the next step 9.

  In step 9, the opening / closing body 10 is reversed and opened by reversing the rotation direction of the opening / closing machine 40.

  In step 10, it waits for the detection signal from the position detection unit before all the hands to disappear (more specifically, it waits for the contact of the counter-type limit switch 41 to turn off). Then, the process proceeds to the next step 11.

  In step 11, the opening / closing body 10 is stopped when the opening / closing device 40 is stopped.

This stop state is regarded as a normal intermediate stop state in which the end portion in the closing direction of the opening / closing body 10 is located slightly on the opening direction side from the predetermined range H before full closing.
Therefore, after the stop state, when there is a closing command by the closing switch 51c or the like, the opening / closing body 10 performs the closing operation, and the processing after Step 1 is performed again.

If there is no stop command in step 3, step 3a is executed.
In step 3a, it is determined whether or not the lower limit timer has been counted up. If the lower limit timer has been counted up, the process proceeds to step 4a. If not, the process proceeds to step 3b.

  In step 4a, the closing operation of the opening / closing body 10 is stopped by stopping the opening / closing machine 40. Then, the control unit 50 regards this stop state as an abnormal stop state due to failure of the seat plate sensing unit, and performs a special release operation (for example, the open switch 51a and the close switch 51c to restart the open / close operation of the open / close body 10). The operation to press simultaneously etc.) is required. In this abnormal stop state, an alarm may be transmitted (including blinking of an LED, an alarm sound, an alarm signal, etc.) as necessary.

  In step 3b, it is determined whether or not there is a sensing signal from the seat plate sensing unit (movable seat plate 12 or the like). If there is a sensing signal, the process proceeds to the next step 4b. Return the process to 3.

  In step 4b, it waits for the lower limit timer to count up, and if it counts up, it proceeds to the next step 5b.

  In step 5b, the closing operation of the opening / closing body 10 is stopped by stopping the opening / closing machine 40. Then, the control unit 50 regards this stop state as a normal fully closed stop state.

Therefore, according to the control operation shown in FIG. 2, in a state where the closing direction end of the opening / closing body 10 enters the predetermined range H before full closing and the closing operation of the opening / closing body 10 is stopped by the stop command, If the closing command is issued by the operation of the closing switch 51c, the opening / closing body 10 is automatically reversed after the closing operation, and is slightly on the opening direction side from the predetermined range H. Open until it stops.
After this stop state, if there is an input of a closing command by the closing switch 51c or the like, the closing operation of the opening / closing body 10 is resumed. Further, when the opening / closing body 10 during the closing operation reaches the predetermined range H before the full closing, the count-up by the lower limit timer is resumed (steps 1 and 2). Then, for example, if there is no input of a stop command, the detection signal of the seat plate sensing unit is present, and the lower limit timer counts up (steps 3b and 4b), the closing operation of the opening / closing body 10 is stopped (step 5b). ), The stop state is regarded as a normal fully closed stop state.

  In addition, according to the flowchart shown in FIG. 2, after stopping the opening / closing body 10 in the step 11, in order to fully close the opening / closing body 10, the operation by the closing switch 51c is necessary again. As an example, as shown in the flowchart of FIG. 3, the opening / closing body 10 may be automatically fully closed without any operation by the closing switch 51 c.

That is, in the control example shown in FIG. 3, following the stop of the opening operation in step 11, the closing operation of the opening / closing body 10 is performed in the next step 12, and then the process is returned to step 1.
Therefore, according to the control example of FIG. 3, the closing operation of the opening / closing body 10 is automatically performed after the opening operation is stopped in step 11. During the closing operation, for example, if there is no input of a stop command, there is a detection signal from the seat plate sensing unit, and the lower limit timer counts up (steps 3b and 4b), the closing operation is stopped (step 5b). ), And the state is regarded as a normal fully closed stop state.

  In addition, in the control examples shown in FIGS. 2 and 3, it is possible to recognize the presence / absence of a failure of the seat plate sensing unit by determining the presence / absence of a sensing signal from the seat plate sensing unit. As in the control example shown in FIG. 4, it is possible to adopt a mode in which the presence or absence of failure of the seat plate sensing unit is not recognized.

The flowchart shown in FIG. 4 has a configuration in which Step 2 is replaced with Step 2 ′, Step 5 is replaced with Step 5 ′, and Step 3a is replaced with Step 3a ′ with respect to the flowchart illustrated in FIG.
If only the replaced step is described in detail, in step 2 ′, counting by the lower limit timer is started and the seat plate sensing unit is disabled.
In step 5 ′, the count by the lower limit timer is stopped and the seat plate sensing unit is enabled.
In step 3a ′, if the lower limit timer has counted up, the process proceeds to step 4a; otherwise, the process returns to step 3.

That is, according to the control example shown in FIG. 4, first, when the closing direction end of the opening / closing body 10 during the closing operation enters the predetermined range H before full closing, counting by the lower limit timer is started and seat plate detection is performed. Are invalidated (steps 1, 2 ').
Thereafter, when there is a stop command by the stop switch 51b or the like, the closing operation of the opening / closing body 10 and the counting by the lower limit timer are stopped and the seat plate sensing unit is enabled (steps 4 and 5 '). The closing operation of the opening / closing body 10 is restarted on the condition that there is an input (steps 6 and 7). During the closing operation, the opening / closing body 10 is reversed and opened on the condition that there is a sensing signal from the seat plate sensing unit. (Steps 8 and 9), and thereafter, the opening operation is stopped on the condition that the detection signal from the position detection unit before full closing is gone (Steps 10 and 11).

  Further, when there is no stop command by the stop switch 51b or the like, in a state in which the closing operation of the opening / closing body 10, the counting by the lower limit timer, and the invalidation of the seat plate sensing unit are continued, it waits for the lower limit timer to count up, If it is up, the closing operation of the opening / closing body 10 is stopped (steps 3a ', 4a), and this state is regarded as a fully closed stop state. In addition, after step 4a, it is preferable to enable the seat plate sensing unit in preparation for the next opening / closing operation.

  Also in the control example shown in FIG. 4, similarly to the control example shown in FIG. 3, step 12 may be executed after step 11, and the process may be returned to step 1.

  Further, the present invention does not limit the control when the closing direction end of the opening / closing body 10 is on the opening direction side with respect to the predetermined range H before full closing, but as an example, the closing direction end of the opening / closing body 10 is not limited. If the seat is on the opening direction side of the predetermined range H, the seat plate sensing unit is always enabled, and if there is a sensing signal from the seat plate sensing unit during the closing operation of the opening / closing body 10, Assuming that the end in the closing direction of the body 10 is in contact with an obstacle or the like, the opening / closing body 10 is stopped / inverted, opened for a predetermined time, and then stopped (so-called touch-up operation is performed).

  In addition, the seat plate sensing unit may be other than the above-described embodiment as long as it can detect that the closing direction end of the opening / closing body 10 is in contact with the contact target site p. Further, a mode in which a sensor (for example, a tape switch or the like) that outputs a detection signal by a pressing force from below is provided at the end of the opening / closing body 10 in the closing direction may be used.

  Further, according to the above embodiment, the closing command input to the control unit 50 is the contact signal of the closing switch 51c of the operation unit 51. As another example, this closing command is used as a remote control device or other not shown. It is possible to use a signal emitted from the operation circuit.

  Also, in the control examples shown in FIGS. 2 to 4, in the fully closed stop state, the closing command by the closing operation or the like is invalidated until there is an opening command by a predetermined operation such as an opening operation. Good. According to this configuration, in the fully closed stop state, even if there is a close command by a closing operation or the like, it is ignored and the fully closed stop state is maintained.

  As another example, in the control examples shown in FIGS. 2 to 4, in the fully closed stop state, the above-mentioned step is performed after the seat plate sensing unit is enabled while the closing command by the closing operation is enabled. The processing may be shifted to 6. According to this configuration, in the fully closed stop state, when there is a closing command by a closing operation or the like, the position where the opening / closing body 10 is slightly on the opening direction side with respect to the predetermined range H by the processing of Steps 6 to 11. Open until it stops.

10: Opening and closing body 12: Movable seat plate (seat plate sensor)
30: Winding device 40: Opening / closing machine 41: Counter type limit switch (position detection part before full closing)
50: Control unit

Claims (3)

An opening / closing body that performs a closing operation by sliding an end portion in the closing direction, a position detection unit that detects that the closing direction end portion of the opening / closing body is within a predetermined range before full closing, and a closure of the opening / closing body A seat plate sensing unit that senses that the direction end is in contact with an object on the closing direction side, and a control unit that controls the opening and closing body. In the opening and closing device that starts counting a predetermined time by a timer when there is a detection signal by the unit, and stops the closing operation by considering that the opening and closing body is fully closed by counting up the timer,
In the state where the control unit is in the closing operation of the opening and closing body and there is a detection signal input by the position detection unit before full closing, when the stop command is input, the closing operation of the opening and closing body and The counting by the timer is stopped, and then the closing operation of the opening / closing body is restarted on the condition that there is an input of a closing command. During the closing operation, the sensing signal of the seat plate sensing unit is present. An opening / closing apparatus that reverses the opening / closing body to perform an opening operation, and then stops the opening operation on condition that a sensing signal from the position detection unit before all the closures disappears.   The opening / closing apparatus according to claim 1, wherein the controller closes the opening / closing body after stopping the opening operation.   In the state where the control unit is in the closing operation of the opening and closing body and the detection signal is input by the position detection unit before all the closes, when the stop command is not input, the detection signal by the seat plate detection unit If the opening / closing body is stopped and the stop state is regarded as an abnormal state on the condition that the timer has counted up and the timer has counted up, the detection signal from the seat plate sensing unit is present and the timer has been counted up. The switchgear according to claim 1 or 2, wherein the switchgear is stopped and the stopped state is regarded as a normal fully closed stop state.

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