JP2019203304A - Control device for opening/closing device and opening closing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To generate a threshold value for stopping the opening operation based on the load of a drive device during the opening operation of the opening / closing body, thereby stopping the opening operation without applying an excessive force to the opening / closing body when the opening / closing body is fully opened. The purpose is to A load detection unit that detects a load of a drive device that drives an opening / closing body that opens and closes an opening, and a lower end portion of the opening and closing body that is driven in a direction that opens the opening opens the opening. Based on the magnitude of the load detected by the load detection unit when a predetermined range, which is a range on the front side from the fully opened position to be fully opened, is used, the load detected by the load detection unit is used. A generation unit that generates a stop threshold value used when stopping the driving of the opening / closing body. [Selection diagram] Fig. 3

Description

  The present invention relates to a control device for a switchgear and a switchgear.

  In a conventional switchgear, a physical quantity that changes according to a load of a drive device (eg, a motor) (eg, a DC voltage detected by the load detection device) exceeds a predetermined threshold value. There is one that stops driving (see Patent Document 1).

Japanese Utility Model Publication No. 5-32697

  Here, the load on the driving device may increase due to an increase in sliding resistance of the opening / closing body due to aging. Therefore, as in Patent Document 1, in an opening / closing device that stops driving of the opening / closing body on the condition that the load of the driving device exceeds a predetermined threshold value, a predetermined amount is required to prevent erroneous stop due to the sliding resistance or the like. In many cases, a large threshold is set.

  However, if the predetermined threshold value is set to a large value as described above, the opening / closing body is tightened more than necessary in the opening / closing body opening operation, and the durability of the opening / closing device is reduced. There is a risk of causing.

  Therefore, the present invention generates a threshold value for stopping the opening operation based on the load of the driving device during the opening operation of the opening / closing body, so that the opening operation can be performed without applying an excessive force to the opening / closing body when the opening / closing body is fully opened. The purpose is to stop.

In order to solve the above problems, the present invention has the following configuration.
(First invention)
According to a first aspect of the present invention, there is provided a control device for an opening / closing device, wherein the load detection unit detects a load of a driving device that drives the opening / closing member that opens and closes the opening, and the opening / closing member that is driven in a direction to open the opening. When the lower end portion of the load reaches a predetermined range that is a range on the near side from the fully open position that fully opens the opening, the load detection unit is based on the magnitude of the load detected by the load detection unit. And a generating unit that generates a stop threshold value used when driving of the opening / closing body is stopped using the load detected by the above-described operation.

(Second invention)
A switchgear control device according to a second aspect of the present invention is the switchgear control device according to claim 1, wherein the generation unit sets the stop threshold value, and the drive unit causes the switch to open the opening. It is generated once when it is first driven in the opening direction.

(Third invention)
A switchgear control device according to a third aspect is the switchgear control device according to claim 1 or 2, wherein the stop threshold is greater than a maximum value of the load detected by the load detection unit. The predetermined value is a large value.

(Fourth invention)
A switchgear control device according to a fourth invention is the switchgear control device according to any one of claims 1 to 3, wherein the predetermined range is from the fully open position to 60 mm before. It is a range.

(Fifth invention)
The switchgear control device according to a fifth aspect of the present invention is the switchgear control device according to any one of claims 1 to 4, wherein the generation unit further includes the opening / closing body as the opening. When the load detected by the load detection unit exceeds the stop threshold value or a fixed threshold value greater than the stop threshold value, the opening / closing body by the drive device is controlled. It functions as a control part which performs control which stops the drive of.

(Sixth invention)
A switchgear according to a sixth aspect of the invention includes the switchgear controller according to any one of claims 1-5.

  According to the present invention, the threshold value for stopping the opening operation is generated based on the load of the driving device during the opening operation of the opening / closing body, so that the opening operation can be performed without applying an excessive force to the opening / closing body when the opening / closing body is fully opened. Can be stopped.

It is a front view which shows the switchgear in this Embodiment. It is explanatory drawing which shows the operating range of the opening-closing body in this Embodiment. It is a flowchart which shows the flow in which the stop threshold value is produced | generated in this Embodiment.

(Constitution)
Hereinafter, the present embodiment will be described with reference to the drawings. In the present embodiment, description will be made using the width direction (left-right direction) of the opening / closing device 10 and the opening / closing direction (up-down direction) of the opening / closing device 10 with reference to the opening / closing device 10 shown in FIG. When it is necessary to distinguish one side and the other side in the opening / closing direction, the upper side of the opening / closing device 10 shown in FIG. 1 is described as “open side”, and the lower side is described as “closed side”.

FIG. 1 is a front view showing an opening / closing device 10 according to the present embodiment. As shown in FIG. 1, the opening / closing device 10 in the present embodiment is a “window shutter” provided in a building 12 such as a house.
The opening / closing device 10 includes an opening / closing body 20, a guide rail 24, a storage portion 26, and a winding device 30.

  The opening / closing body 20 includes a main body portion 21 in which a plurality of slats 22 formed by bending a substantially rectangular metal plate having a long width direction and a short opening / closing direction are connected, and an end portion on the closing side of the main body portion 21. And a seat plate member 22A provided at the (lower end). The opening / closing body 20 can be opened / closed in the opening / closing direction with respect to the storage portion 26 by driving the winding device 30.

  The seat plate member 22A is a member whose cross-sectional shape is formed in a substantially elliptical shape (see FIG. 2). The seat plate member 22A comes into contact with the lintel portion (the edge portion of the opening (not shown)) of the storage portion 26 in the “fully open position” where the opening portion (not shown) is fully opened. Further, the seat plate member 22A is in contact with the seating target portion P (eg, floor surface, frame member, etc.) in the “fully closed position” where the opening (not shown) is fully closed (see FIG. 2).

  The guide rail 24 is a member having a substantially U-shaped cross section (not shown) surrounding both ends of the opening / closing body 20 in the width direction. The guide rail 24 guides opening / closing of the opening / closing body 20 in the opening / closing direction by surrounding the both ends of the opening / closing body 20 in the width direction and supporting the opening / closing body 20.

  The storage portion 26 is a substantially box-shaped member in which an opening (not shown) for allowing the opening / closing body 20 to appear and disappear is formed on the closed side. The storage portion 26 is provided so as to connect the end portion on the open side of the guide rail 24 in the width direction. In addition, the edge part of the opening (not shown) of the accommodating part 26 is a lintel part (not shown) which contacts 22 A of seat board members in a fully open position.

  The winding device 30 is housed in the housing portion 26 and performs winding and unwinding of the opening / closing body 20. The winding device 30 includes a shaft portion 32, a drive device 35, an encoder device 36, a load detection unit 37, and a control unit 38.

  The shaft portion 32 is a member that extends along the width direction with respect to the storage portion 26. In the winding device 30, the opening / closing body 20 is wound around the shaft portion 32, and the opening / closing body 20 is drawn out from the shaft portion 32.

  The drive device 35 rotates the shaft portion 32 in both directions via power transmission means 34 such as a chain and a sprocket. The drive device 35 includes an AC or DC rotary electric motor (not shown), and transmits the rotation of the output shaft of the drive device 35 to the shaft portion 32 via the power transmission means 34. As described above, the driving device 35 drives the opening / closing body 20 by rotating the shaft portion 32 in both directions.

  The encoder device 36 outputs a pulse signal to the control unit 38 for each predetermined rotation amount as the output shaft of the drive device 35 rotates.

  The load detection unit 37 detects a load of the driving device 35 that drives the opening / closing body 20 that opens and closes an opening (not shown) during the operation of the driving device 35. The load detection unit 37 detects the load of the driving device 35 as a current value or a voltage value, and outputs an electrical signal corresponding to the magnitude of the load to the control unit 38.

  The control unit 38 performs arithmetic processing based on a program for electrical signals input from the encoder device 36, the load detection unit 37, an operation unit (not shown) such as a remote controller or a portable terminal, and the drive device according to the processing result. 35 is controlled.

  The control unit 38 stores the number of pulse signals (number of pulses) output from the encoder device 36 in a pulse counter of a storage device (not shown). The control unit 38 adds the number of pulses output from the encoder device 36 to a pulse counter (not shown) when the closing operation in which the opening / closing body 20 moves to the closing side is performed by the closing control. Further, the control unit 38 subtracts the number of pulses output from the encoder device 36 from a pulse counter (not shown) when an opening operation is performed in which the opening / closing body 20 moves to the opening side by the opening control.

  In addition, the control unit 38 stores the load of the driving device 35 detected by the load detection unit 37 in a predetermined storage area of a storage device (not shown) for each predetermined sampling time.

  Here, the control unit 38 is based on the magnitude of the load detected by the load detection unit 37 when the seat plate member 22A reaches the predetermined range α that is a range on the near side (closed side) from the fully open position. Then, a stop threshold value used when the drive of the opening / closing body 20 is stopped using the load detected by the load detection unit 37 is generated. And the control part 38 produces | generates a stop threshold value once, when the opening / closing body 20 is first driven to the open side from the fully closed position by the drive device 35. FIG.

  In the present embodiment, the predetermined range α is set to “range of 148 pulses from the fully open position to the closed side” (see FIG. 2). The “range corresponding to 148 pulses from the fully opened position to the closed side” is a range from the fully opened position to 60 mm before.

  The “stop threshold” is used to stop the driving of the opening / closing body 20 in the predetermined range α when the seat plate member 22A comes into contact with a lintel portion (not shown) of the storage portion 26 and the load of the driving device 35 suddenly increases. This is the threshold used in the case. Even when the seat plate member 22A comes into contact with an obstacle, the load of the driving device 35 increases rapidly. And the control part 38 stops the drive of the opening-closing body 20, when the load detected by the load detection part 37 exceeds the stop threshold value. Although details of generation of the stop threshold will be described later, the control unit 38 generates the stop threshold by adding a margin value to the maximum load value detected by the load detection unit 37.

  The “margin value” is a value set so that the driving of the opening / closing body 20 does not stop erroneously when the load slightly increases due to an increase in sliding resistance of the opening / closing body 20 due to secular change, adhesion of dirt, or the like. It is.

  Further, the control unit 38 determines that the load detected by the load detection unit 37 is a preset load in a range other than the predetermined range α in the opening operation of the opening / closing body 20 (hereinafter referred to as “outside the predetermined range β”). When the fixed threshold value is exceeded, the driving of the opening / closing body 20 is stopped.

  In the present embodiment, “outside the predetermined range β” is “a range from the position moved from the fully open position to the closed side by 148 pulses to the fully closed position” (see FIG. 2).

  The “fixed threshold value” is a load set in advance as described above. When the load of the driving device 35 suddenly increases due to the seat plate member 22A coming into contact with an obstacle or the like, the opening / closing at a β outside the predetermined range is performed. This is a threshold value used when driving the body 20 is stopped. The “fixed threshold value” in the present embodiment is a value that is larger in advance than the above threshold value during the initial operation of the opening / closing device 10 in consideration of an increase in the sliding resistance of the opening / closing body 20 due to secular change. Is set to Further, the fixed threshold is larger than the stop threshold.

(Flow in which the stop threshold is generated)
Next, a flow of generating a stop threshold will be described using the flowchart shown in FIG. 3 is based on the premise that the opening / closing body 20 is in the fully closed position, and the predetermined number of pulses at the fully closed position (hereinafter referred to as “the number of pulses when fully closed”) is not shown by the control unit 38. It is assumed that it is stored in the pulse counter. In the present embodiment, the trigger for generating the stop threshold is when the opening / closing body 20 is first driven from the fully closed position to the open side by the driving device 35.

  In step S <b> 10, the control unit 38 determines whether an opening operation signal for opening the opening / closing body 20 has been input from an operation unit (not shown) (for example, a remote controller or a portable terminal). Here, if the control unit 38 determines that the opening operation signal has been input, the process proceeds to the next step S11. On the other hand, if it is not determined by the control unit 38 that the opening operation signal has been input, step S10 is performed again.

  In step S <b> 11, an opening operation start process for starting the opening operation of the opening / closing body 20 is performed by the control unit 38. Specifically, the control unit 38 starts winding of the opening / closing body 20 by the shaft portion 32 by rotating the shaft portion 32 based on the rotation of the output shaft of the drive device 35 in step S11. Thereafter, the process proceeds to the next step S12. In addition, the control unit 38 indicates the number of output pulses every time the number of pulses is output from the encoder device 36 until the opening operation stop process in step S16 described later is performed after the start of the opening operation start process. Do not subtract from the pulse counter.

  In step S <b> 12, the load detection unit 37 performs load detection processing for detecting the load of the drive device 35. Thereafter, the process proceeds to the next step S13. Further, the control unit 38 illustrates the load of the driving device 35 detected by the load detection unit 37 every predetermined sampling time after the start of the load detection process until a stop threshold value storage process of step S17 described later is performed. Do not store in the storage device.

  In step S13, the control unit 38 determines whether or not the opening / closing body 20 has moved to the predetermined range α. If it is determined by the control unit 38 that the opening / closing body 20 has moved to the predetermined range α, the process proceeds to the next step S14. On the other hand, if the controller 38 does not determine that the opening / closing body 20 has moved to the predetermined range α, the process returns to step S12.

  Specifically, in step S13, the control unit 38 subtracts the number of pulses output from the encoder device 36 until the seat plate member 22A moves from the fully closed position to the current position from the fully closed number of pulses. The above determination is performed using the current number of pulses. Then, in step S13 described above, the control unit 38 determines that the opening / closing body 20 has moved to the predetermined range α when the current pulse number is between 0 pulse and 148 pulses which are the predetermined range α.

  In step S14, the control unit 38 performs stop threshold value generation processing for generating a stop threshold value. At this time, the control unit 38 generates a stop threshold based on the magnitude of the load detected by the load detection unit 37 until step S14. Specifically, the control unit 38 generates a stop threshold by adding a predetermined margin value to the maximum value of the load detected by the load detection unit 37 until step S14. Thereafter, the process proceeds to next Step S15.

  In step S15, the control unit 38 determines whether or not a load equal to or greater than the stop threshold is detected. If the control unit 38 determines that a load equal to or greater than the stop threshold is detected, the process proceeds to the next step S16. On the other hand, if it is not determined by the control unit 38 that a load equal to or greater than the stop threshold has been detected, step S15 is performed again.

  In step S <b> 16, an opening operation stop process for stopping the opening operation of the opening / closing body 20 is performed by the control unit 38. Specifically, in step S16, the control unit 38 stops the rotation of the output shaft of the driving device 35, and accordingly stops the rotation of the shaft unit 32. Thereafter, the process proceeds to next Step S17.

  In step S17, the control unit 38 performs a stop threshold value storage process for storing the stop threshold value generated in step S14 in a storage device (not shown). Then, the process ends. In the second and subsequent operations of the opening / closing device 10, the stop determination of the driving of the opening / closing body 20 in the predetermined range α is performed using the stop threshold value stored in the storage device (not shown) of the control unit 38 in step S17. .

(Operational effect of the present embodiment)
In the present embodiment, the control unit 38 generates a stop threshold value based on the magnitude of the load detected by the load detection unit 37 when the seat plate member 22A reaches the predetermined range α.

  That is, according to the present embodiment, the control unit 38 stops driving the opening / closing body 20 in the predetermined range α based on the magnitude of the load detected by the load detection unit 37 during the opening operation of the opening / closing body 20. A stop threshold, which is a threshold used in the case, can be generated. Thus, according to the present embodiment, since the load during the opening operation of the opening / closing body 20 is used to generate the stop threshold, each load is detected even if various loads according to the size of the opening / closing body 20 are detected. It is possible to generate a dedicated stop threshold corresponding to.

  Here, the configuration in which the threshold value used when stopping the driving of the opening / closing body 20 in the predetermined range α is set in advance (hereinafter referred to as “comparison configuration”) has the following problems.

  First, it is known that the load on the driving device 35 during the opening operation of the opening / closing body 20 increases due to an increase in sliding resistance of the opening / closing body 20 due to aging. Therefore, in the switching device 10 of the comparative configuration, the threshold value used when stopping the driving of the opening / closing body 20 in the predetermined range α is set to a large value in advance so as to prevent the erroneous stop due to the sliding resistance or the like. doing. Accordingly, in the opening operation of the opening / closing body 20 in the comparative configuration, the opening / closing body 20 is wound more than necessary due to the delay of the stopping operation of the opening / closing body 20, and the durability of the opening / closing device 10 is reduced.

  On the other hand, in the present embodiment, when the load detected by the load detection unit 37 exceeds the stop threshold generated during the opening operation of the opening / closing body 20, the control unit 38 drives the opening / closing body 20. Stopped. Therefore, according to the present embodiment, it is possible to provide the opening / closing device 10 in which the opening operation is stopped without applying an excessive force to the opening / closing body 20 when the opening / closing body 20 is fully opened, as compared with the comparative configuration. The configuration of the present embodiment is particularly suitable when the opening / closing device 10 is a small-sized device such as a window shutter.

  In the present embodiment, when the load detected by the load detection unit 37 outside the predetermined range β exceeds the fixed threshold, the control unit 38 stops the driving of the opening / closing body 20. The “fixed threshold value” in the present embodiment is a value that is larger in advance than the above threshold value during the initial operation of the opening / closing device 10 in consideration of an increase in the sliding resistance of the opening / closing body 20 due to secular change. Is set to

  Therefore, according to the present embodiment, even if the load of the driving device 35 during the opening operation of the opening / closing body 20 increases due to secular change or the like, the opening / closing body 20 is driven outside the predetermined range β due to this secular change or the like. Can be prevented from erroneously stopping.

  In the present embodiment, the control unit 38 generates a stop threshold value by adding a margin value to the maximum load value detected by the load detection unit 37. In other words, in the present embodiment, the maximum value of the load detected by the load detection unit 37 is not used as the stop threshold value as it is, but the stop threshold value is obtained by adding a margin value such as a margin value to the maximum value of the load. Is generated.

  Therefore, according to the present embodiment, even if the load of the driving device 35 during the opening operation of the opening / closing body 20 increases due to aging, etc., the opening / closing body 20 is driven within the predetermined range α along with this aging, etc. A false stop can be suppressed.

  In the present embodiment, the control unit 38 generates the stop threshold value only once when the opening / closing body 20 is first driven from the fully closed position to the open side by the driving device 35. In the present embodiment, in the second and subsequent operations of the opening / closing body 20, the stop determination of the driving of the opening / closing body 20 in the predetermined range α is performed using the stop threshold generated by the control unit 38.

  Therefore, according to the present embodiment, since the load during the opening operation of the opening / closing body 20 at the time of initial driving without a secular change is used for generation of the stop threshold value, it is aged as compared with the configuration in which the stop threshold value is appropriately updated. An erroneous stop of driving of the opening / closing body 20 due to a change or the like can be suppressed.

(Other)
Although the opening / closing device 10 has been described as a “window shutter” in the present embodiment, the present invention is not limited to this, and the opening / closing device 10 may be a shutter that opens and closes an opening (not shown) such as a “garage shutter”.

  In the present embodiment, the stop threshold value is generated by adding a margin value to the maximum load value detected by the load detection unit 37. However, the present invention is not limited to this, and the maximum load value detected by the load detection unit 37 is not limited thereto. May be used as a stop threshold value. Further, not only adding a margin value to the maximum value of the load detected by the load detection unit 37, but also generating a stop threshold by multiplying the maximum value of the load detected by the load detection unit 37 by a predetermined ratio. Also good.

  In the present embodiment, the control unit 38 stores the load of the drive device 35 detected by the load detection unit 37 in a predetermined storage area of a storage device (not shown) for each predetermined sampling time. However, the present invention is not limited to this. When the stop threshold value is generated, the load stored in a storage device (not shown) of the control unit 38 is updated each time the maximum load value is detected by the load detection unit 37. Also good.

DESCRIPTION OF SYMBOLS 10 Opening / closing device 12 Building 20 Opening / closing body 21 Main body part 22 Slat 22A Seat plate member 24 Guide rail 26 Storage part 30 Winding device 32 Shaft part 34 Power transmission means 35 Drive apparatus 36 Encoder apparatus 37 Load detection part 38 Control part

Claims (6)

A load detection unit that detects a load of a driving device that drives an opening and closing body that opens and closes the opening; and
Detected by the load detection unit when the lower end of the opening / closing body driven in a direction to open the opening reaches a predetermined range that is a range on the near side from a fully open position that fully opens the opening. A generating unit that generates a stop threshold value used when stopping the driving of the opening and closing body using the load detected by the load detecting unit based on the size of the load that has been performed;
A control device for a switchgear comprising:   2. The opening / closing device control device according to claim 1, wherein the generation unit generates the stop threshold value once when the opening / closing body is first driven in a direction of opening the opening by the driving device.   3. The switchgear control device according to claim 1, wherein the stop threshold is a value larger than a maximum value of the load detected by the load detection unit by a predetermined value.   The switch device for a switchgear according to any one of claims 1 to 3, wherein the predetermined range is a range from the fully opened position to 60 mm before. The generating unit further includes:
When the opening and closing body controls the driving device to open and close the opening, and when the load detected by the load detection unit exceeds the stop threshold, or a fixed threshold greater than the stop threshold, The switchgear control device according to any one of claims 1 to 4, wherein the switchgear control device functions as a control unit that performs control to stop driving of the switchgear by the drive device. A switchgear comprising the switchgear control device according to any one of claims 1 to 5.