Control device

Abstract

To provide technology to improve issues regarding the timing when the upper shielding material and the lower shielding material reach the stop position.SOLUTION: A control device for controlling a motorized shielding device, in which the first moving member installed below the lower shielding material of the two shielding materials arranged vertically and the second moving member installed between the upper and lower shielding materials of the two shielding materials can be raised and lowered independently of each other by the driving force of a motor, includes an elevation control unit that raises the first moving member at a faster rate than the second moving member when the first moving member and the second moving member are simultaneously raised, or lowers the second moving member at a faster rate than the first moving member when the first moving member and the second moving member are simultaneously lowered.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] This embodiment relates to control of raising and lowering a shading material in an electric shading device. [Background technology]

[0002] Conventionally, there is known an electric shading device capable of raising and lowering upper and lower shielding materials connected in the vertical direction in the same direction (see Patent Document 1). When this electric shading device receives a further raising signal while the upper shielding material is rising, the lower shielding material also starts to rise. Furthermore, the electric shading device stops the rising operation of the upper shielding material when the upper shielding material reaches its upper limit position, and stops the rising operation of the lower shielding material when the lower shielding material is in the same position as the upper shielding material within a predetermined range. However, with this electric shading device, the upper and lower shielding materials are always raised and lowered at a constant speed, so in many cases the upper and lower shielding materials reach their stop positions at different times. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-033802 A Summary of the Invention [Problem to be solved by the invention]

[0004] To provide a technology capable of improving a problem regarding the timing at which an upper shielding material and a lower shielding material reach a stop position. [Means for solving the problem]

[0005] In order to solve the above-mentioned problems, one embodiment of the present invention is a control device that controls an electric shading device in which a first movable member provided below the lower shielding member of two shielding members arranged vertically in succession, and a second movable member provided between the upper shielding member and the lower shielding member of the two shielding members, can be raised and lowered independently by the driving force of a motor, and is equipped with a lifting and lowering control unit that, when the first moving member and the second moving member are raised simultaneously, lifts the first moving member at a faster lifting speed than the second moving member, or, when the first moving member and the second moving member are lowered simultaneously, lowers the second moving member at a faster lowering speed than the first moving member. Effect of the Invention

[0006] According to the present invention, it is possible to improve the problem regarding the timing at which the upper shielding material and the lower shielding material reach the stop position, and in particular to reduce the difference in the arrival timing. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a front view showing a configuration of an electric shading device according to an embodiment. [Diagram 2] 1 is a schematic plan view perspective view showing a configuration of an electric shading device according to an embodiment. [Diagram 3] FIG. 2 is a schematic diagram showing a configuration of a first operating device. [Figure 4] FIG. 4 is a schematic diagram showing a configuration of a second operating device. [Diagram 5] FIG. 2 is a block diagram showing a hardware configuration of a control device. [Figure 6] FIG. 2 is a block diagram showing a functional configuration of a control device. [Figure 7] 4 is a flowchart showing the operation of the control device. [Figure 8] 13 is a flowchart showing an operation of a bottom rail control process. [Figure 9] 13 is a flowchart showing the operation of an intermediate bar control process. [Figure 10] 13 is a flowchart showing the operation of a collective control process. [Figure 11] 13 is a flowchart showing the operation of a speed adjustment process. [Figure 12] 13 is an explanatory diagram for calculating the ascending speed when the bottom rail is accelerated or the intermediate bar is decelerated. FIG. [Figure 13] 13 is an explanatory diagram for calculating the descent speed when the bottom rail is accelerated or the intermediate bar is decelerated. FIG. [Figure 14] 13 is an explanatory diagram for calculating the rising speed when the intermediate bar is accelerated or the bottom rail is decelerated. FIG. [Figure 15] 13 is an explanatory diagram for calculating the descent speed when the intermediate bar is accelerated or the bottom rail is decelerated. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In this embodiment, an electric shading device in which the present invention is applied to a pleated screen having two types of screens that can be raised and lowered as a shading material will be described as an example. In this embodiment, the surface facing the room when the electric shading device is installed will be referred to as the front, the surface facing the outside of the room as the back, the direction consisting of the front and back as the front-rear direction, and the longitudinal direction of the electric shading device as the left-right direction. In this specification and drawings, components having substantially the same functions will be given the same reference numerals to avoid redundant description.

[0009] (Overall composition) The overall configuration of the electric shading device according to this embodiment will be described. Figures 1 and 2 are a front view and a schematic plan view perspective view, respectively, showing the configuration of the electric shading device according to this embodiment. Note that Figure 1 shows the electric shading device in a state where the bottom rail is lowered to the lower end position, and only the inside of the head box is shown.

[0010] As shown in Figures 1 and 2, the electric shading device 1 of this embodiment comprises a head box 2, a bottom rail 31 as a first movable member, two lifting cords 32 formed in the form of strings or tapes, a screen 33 as a lower shading material, an intermediate bar 41 as a second movable member, two dimmer cords 42 formed in the form of strings or tapes, and a screen 43 as an upper shading material.

[0011] The head box 2 is formed in a substantially rectangular parallelepiped shape that defines an accommodation space therein, and is fixed to a window frame (not shown) or the like via a plurality of brackets 21. The head box 2 accommodates a first drive shaft 201A, two first winding drums 202A, a first motor 203A, a second drive shaft 201B, two second winding drums 202B, a second motor 203B, a power supply unit 204, and a control device 3.

[0012] The first drive shaft 201A, the two first winding drums 202A, and the first motor 203A constitute a first drive system that raises and lowers the bottom rail 31. The second drive shaft 201B, the two second winding drums 202B, and the second motor 203B constitute a second drive system that raises and lowers the intermediate bar 41. In this embodiment, the first drive system is disposed on the rear side, and the second drive system is disposed on the front side, and the first drive system and the second drive system are arranged side by side at different positions in the front-rear direction. Note that, although the number of each of the first winding drums 202A and the second winding drums 202B is two here, three or more may be provided.

[0013] The first drive shaft 201A and the second drive shaft 201B are rectangular columnar members extending in the left-right direction, and are rotatably supported by the first motor 203A and the second motor 203B in the head box 2 with their axial centers facing the left-right direction. The two first winding drums 202A are each penetrated by the first drive shaft 201A so as to rotate integrally with the first drive shaft 201A, and one end of the corresponding one of the two lift-down cords 32 is connected to the first drive shaft 201A so as to be able to be wound and unwound. The two second winding drums 202B are each penetrated by the second drive shaft 201B so as to rotate integrally with the second drive shaft 201B, and one end of the corresponding one of the two light control cords 42 is connected to the second drive shaft 201B so as to be able to be wound and unwound.

[0014] The bottom rail 31 is connected to the other ends of the two lifting cords 32, is suspended from the head box 2 so as to be located at the lowest end of the motorized shading device 1, and is a member formed to be long in the left-right direction. The intermediate bar 41 is connected to the other ends of the two light control cords 42, and is suspended from the head box 2 so as to be located between the head box 2 and the bottom rail 31 in the up-down direction, and is a member formed to be long in the left-right direction.

[0015] The screen 33 is a shielding member whose upper end is connected to the underside of the intermediate bar 41 and whose lower end is connected to the upper surface of the bottom rail 31, is formed in a pleat shape that can be folded up and down, and through which the two lift-down cords 32 are partially inserted in the vertical direction. The screen 43 is a shielding member whose upper end is connected to the underside of the head box 2 and whose lower end is connected to the upper surface of the intermediate bar 41, is formed in a pleat shape that can be folded up and down, and through which the two light control cords 42 are partially inserted in the vertical direction.

[0016] The first motor 203A drives the bottom rail 31 to move up and down by rotating the first drive shaft 201A. The second motor 203B drives the intermediate bar 41 to move up and down by rotating the second drive shaft 201B. Each of the first motor 203A and the second motor 203B is provided with an encoder capable of detecting the amount of rotation, the direction of rotation, and the speed of rotation. The power supply unit 204 supplies power obtained via an outlet plug 205 led out to the outside of the head box 2 to the first motor 203A, the second motor 203B, and the control device 3. The control device 3 controls the direction of rotation and the speed of rotation of the first motor 203A and the second motor 203B, as will be described later in detail, to control the lifting and lowering of the bottom rail 31 and the intermediate bar 41.

[0017] (Configuration of the operation device) The configuration of the operation device will be described below. Figures 3 and 4 are schematic diagrams showing the configurations of the first and second operation devices, respectively.

[0018] 3, the first operating device 4A is connected by wire or wirelessly to the motorized shading device 1, specifically the control device 3, so as to be able to communicate with it, and transmits to the control device 3 control signals indicating operation instructions relating to the lifting and lowering control of the bottom rail 31 and the middle bar 41. The first operating device 4A includes a bottom rail up switch 401, a bottom rail down switch 402, a full stop switch 403, a middle bar up switch 411, and a middle bar down switch 412.

[0019] When the bottom rail up switch 401 is pressed, a rise signal is sent to raise the bottom rail 31. When the bottom rail down switch 402 is pressed, a fall signal is sent to lower the bottom rail 31. When the full stop switch 403 is pressed, a full stop signal is sent to stop the raising and lowering of the bottom rail 31 and middle bar 41. When the middle bar up switch 411 is pressed, a rise signal is sent to raise the middle bar 41. When the middle bar down switch 412 is pressed, a fall signal is sent to lower the middle bar 41.

[0020] Furthermore, when either the bottom rail lift switch 401 or the intermediate bar lift switch 411 is pressed for a long time, a lift signal is transmitted to lift the bottom rail 31 and the intermediate bar 41. This lift signal may be transmitted when the bottom rail lift switch 401 and the intermediate bar lift switch 411 are pressed simultaneously, or when a dedicated switch provided separately is pressed. Note that, although the above-mentioned switch operation is used to transmit a lift signal to lift the bottom rail 31 and the intermediate bar 41, this is not necessarily a limitation. For example, a control unit (not shown) connected to the control device 3 may determine that the bottom rail 31 and the intermediate bar 41 are to be lifted when it detects the above-mentioned switch operation.

[0021] Furthermore, when either the bottom rail lowering switch 402 or the intermediate bar lowering switch 412 is pressed for a long time, a lowering signal is transmitted to lower the bottom rail 31 and the intermediate bar 41. This lowering signal may be transmitted when the bottom rail lowering switch 402 and the intermediate bar lowering switch 412 are pressed simultaneously, or may be transmitted when a separately provided dedicated switch is pressed. Note that, although the above-mentioned switch operation is used to transmit a lowering signal to lower the bottom rail 31 and the intermediate bar 41, this is not necessarily a limitation. For example, a control unit (not shown) connected to the control device 3 may determine that the bottom rail 31 and the intermediate bar 41 are to be lowered when the above-mentioned switch operation is detected.

[0022] 4, the second operating device 4B is wired or wirelessly connected to at least one control device 3 provided in at least one powered shading device 1 so as to be able to communicate with each other, and is different from the first operating device 4A in that it further includes a selection switch group 50. The selection switch group 50 includes, as a means for transmitting a control signal, eight switches for individually designating specific powered shading devices 1, and one switch for designating all powered shading devices 1 connected to the second operating device 4B.

[0023] The above-mentioned control signals transmitted by the first operating device 4A and the second operating device 4B may be transmitted by a central control device communicatively connected to at least one or more of the motorized shading devices 1. In the following description, the first operating device 4A and the second operating device 4B will not be distinguished from each other, and will be collectively referred to as the operating device 4. The above-mentioned various control signals may be contact signals or commands.

[0024] (Control device configuration) The hardware configuration and the functional configuration of the control device will be described below. Figures 5 and 6 are block diagrams showing the hardware configuration and the functional configuration of the control device, respectively.

[0025] 5, the control device 3 includes, as hardware, a CPU (Central Processing Unit) 311, a memory 312, and an input / output IF (Interface) 313. The CPU 311 and the memory 312 cooperate to execute various functions. The input / output IF 313 inputs and outputs data to and from the first motor 203A, the second motor 203B, and the operation device 4, which are communicatively connected to the control device 3.

[0026] As shown in FIG. 6, the control device 3 includes a signal receiving unit 301, a state determining unit 303, a distance determining unit 304, a speed calculating unit 305, an elevation control unit 306, and a mode setting unit 307 as functions.

[0027] The signal receiving unit 301 receives a control signal transmitted by the operating device 4. The state determining unit 303 determines the control target and type of the control signal received by the signal receiving unit 301, thereby determining the drive state of the bottom rail 31 and the intermediate bar 41. The control target may be the bottom rail 31, the intermediate bar 41, or the bottom rail 31 and the intermediate bar 41. The types may be an up signal, a down signal, or a full stop signal. For simplicity, the full stop signal will not be taken into consideration in the following explanation.

[0028] The distance determination unit 304 performs a comparison determination based on the distance between the current position and the stop position of the bottom rail 31 and the distance between the current position and the stop position of the intermediate bar 41. The speed calculation unit 305 calculates an adjustment speed, which is an elevation speed increased or decreased from a set speed, for the bottom rail 31 or the intermediate bar 41 so that the timings at which they reach the stop position are approximately the same for each other, based on the determination result by the distance determination unit 304. Here, the set speed is a preset elevation speed.

[0029] The lifting / lowering control unit 306 drives the first motor 203A or the second motor 203B to lift and lower the bottom rail 31 and the intermediate bar 41 at a set speed or an adjusted speed. The mode setting unit 307 sets the motorized shading device 1 to either an increased speed mode or a decreased speed mode based on the selection of the user or the manufacturer. In the increased speed mode, the adjusted speed is calculated as an increased lifting / lowering speed, and in the decreased speed mode, the adjusted speed is calculated as a decreased lifting / lowering speed.

[0030] (Control device operation) The operation of the control device will now be described with reference to a flowchart shown in Fig. 7.

[0031] As shown in FIG. 7, first, the state determination unit 303 determines whether or not a control signal has been received by the signal receiving unit 301 (S101).

[0032] When a control signal is received (S101, YES), the state determination unit 303 determines whether or not the control target of the received control signal is the bottom rail 31 and the intermediate bar 41 (S102).

[0033] When the control target is not the bottom rail 31 or the intermediate bar 41 (S102, NO), the state determination unit 303 determines whether the control target by the control signal is only the bottom rail 31 (S103).

[0034] If the control target is only the bottom rail 31 (S103, YES), a bottom rail control process described below is executed (S104), and the state determination unit 303 again determines whether or not a control signal has been received by the signal receiving unit 301 (S101).

[0035] On the other hand, if the control object is not only the bottom rail 31, i.e., if the control object is only the intermediate bar 41 (S103, NO), the intermediate bar control process described below is executed (S105), and the state determination unit 303 again determines whether or not a control signal has been received by the signal receiving unit 301 (S101).

[0036] Also, in step S102, if the control object is the bottom rail 31 and the intermediate bar 41 (S102, YES), a collective control process described below is executed (S106), and the state determination unit 303 again determines whether or not a control signal has been received by the signal receiving unit 301 (S101).

[0037] Furthermore, in step S101, if a control signal is not received (S101, NO), the state determination unit 303 again determines whether or not a control signal has been received by the signal receiving unit 301 (S101).

[0038] (Bottom rail control processing) The bottom rail control process will now be described with reference to a flowchart of FIG 8.

[0039] As shown in FIG. 8, first, the state determination unit 303 determines whether the type of the received control signal is an up signal or not (S201).

[0040] If the type of the control signal is an up signal (S201, YES), the state determination unit 303 determines whether the bottom rail 31 can be driven up (S202). Specifically, the state determination unit 303 determines that the bottom rail 31 can be driven up when the bottom rail 31 is located below the first upper limit position and is located below the position of the intermediate bar 41 by a predetermined distance or more. Here, the first upper limit position is located at the upper end of the lifting range of the bottom rail 31, and may be set in advance before the operation of the motorized shading device 1, or may be set appropriately after the start of use. The predetermined distance here corresponds to the folding allowance when the screen 33 is folded to the maximum, and is the distance when the intermediate bar 41 and the bottom rail 31 are closest to each other.

[0041] When the bottom rail 31 can be driven to rise (S202, YES), the state determination unit 303 determines whether or not the intermediate bar 41 is being driven to rise (S203).

[0042] If the intermediate bar 41 is being driven upward (S203, YES), a speed adjustment process described below is executed (S204), and the lifting control unit 306 starts driving the bottom rail 31 upward to reach the first upper limit position based on the processing result of the speed adjustment process (S205), and the bottom rail control process is terminated.

[0043] On the other hand, if the intermediate bar 41 is not being driven upward (S203, NO), the lifting control unit 306 starts driving the bottom rail 31 upward to approach the intermediate bar 41 at the set speed (S206), and the bottom rail control processing is terminated.

[0044] Furthermore, in step S202, if the bottom rail 31 cannot be driven to rise (S202, NO), the bottom rail control process is ended.

[0045] Furthermore, in step S201, if the control signal is not an up signal, i.e., if the control signal is a down signal (S201, NO), the state determination unit 303 determines whether the bottom rail 31 can be driven downward (S210). Specifically, the state determination unit 303 determines that the bottom rail 31 can be driven downward when the bottom rail 31 is located above the first lower limit position. Here, the first lower limit position is located at the lower end of the lifting range of the bottom rail 31, and may be set in advance prior to operation of the motorized shading device 1, or may be set appropriately after use has begun.

[0046] If the bottom rail 31 can be driven downward (S210, YES), the state determination unit 303 determines whether the intermediate bar 41 is being driven downward (S211).

[0047] If the intermediate bar 41 is being driven downward (S211, YES), a speed adjustment process described below is executed (S212), and the lifting control unit 306 starts driving the bottom rail 31 downward to reach the first lower limit position based on the processing result of the speed adjustment process (S213), and the bottom rail control process is terminated.

[0048] On the other hand, if the intermediate bar 41 is not being driven downward (S211, NO), the lifting control unit 306 starts driving the bottom rail 31 downward to reach the first lower limit position at the set speed (S214), and the bottom rail control process is terminated.

[0049] Furthermore, in step S210, if the bottom rail 31 cannot be driven downward (S210, NO), the bottom rail control process is ended.

[0050] (Intermediate bar control processing) The intermediate bar control process will now be described with reference to a flowchart of FIG 9.

[0051] As shown in FIG. 9, first, the state determination unit 303 determines whether the type of the received control signal is an up signal or not (S301).

[0052] If the type of the control signal is an up signal (S301, YES), the state determination unit 303 determines whether the intermediate bar 41 can be driven to rise (S302). Specifically, the state determination unit 303 determines that the intermediate bar 41 can be driven to rise when the intermediate bar 41 is located below the second upper limit position. Here, the second upper limit position is located at the upper end of the lifting range of the intermediate bar 41, and may be set in advance prior to operation of the motorized shading device 1, or may be set appropriately after the start of use.

[0053] When the intermediate bar 41 can be driven to rise (S302, YES), the state determination unit 303 determines whether the bottom rail 31 is being driven to rise (S303).

[0054] If the bottom rail 31 is being driven upward (S303, YES), a speed adjustment process described below is executed (S304), and the lifting control unit 306 starts driving the intermediate bar 41 upward to reach the second upper limit position based on the processing result of the speed adjustment process (S305), and the intermediate bar control process is terminated.

[0055] On the other hand, if the bottom rail 31 is not being driven upward (S303, NO), the lifting control unit 306 starts driving the intermediate bar 41 upward to reach the second upper limit position at the set speed (S306), and the intermediate bar control process is terminated.

[0056] Moreover, in step S302, when the intermediate bar 41 cannot be driven to rise (S302, NO), the intermediate bar control process is ended.

[0057] Also, in step S301, if the control signal is not an up signal, that is, if the control signal is a down signal (S301, NO), the state determination unit 303 determines whether the intermediate bar 41 can be driven downward (S310). Specifically, the state determination unit 303 determines that the intermediate bar 41 can be driven downward when the intermediate bar 41 is located above the second lower limit position and above the bottom rail 31 by a predetermined distance or more. Here, the second lower limit position is located at the lower end of the lifting range of the intermediate bar 41, and may be set in advance before the operation of the motorized shading device 1, or may be set appropriately after the start of use. Also, the predetermined distance corresponds to the folding allowance when the screen 33 is folded to the maximum, and is the distance when the intermediate bar 41 and the bottom rail 31 are closest to each other.

[0058] If the intermediate bar 41 can be driven downward (S310, YES), the state determination unit 303 determines whether the bottom rail 31 is being driven downward (S311).

[0059] If the bottom rail 31 is being driven downward (S311, YES), a speed adjustment process described below is executed (S312), and the lifting control unit 306 starts driving the intermediate bar 41 downward to reach the second lower limit position based on the processing result of the speed adjustment process (S313), and the intermediate bar control process is terminated.

[0060] On the other hand, if the bottom rail 31 is not being driven downward (S311, NO), the lifting control unit 306 starts driving the intermediate bar 41 downward to reach the second lower limit position at the set speed (S314), and the intermediate bar control process is terminated.

[0061] Moreover, in step S310, if the intermediate bar 41 cannot be driven downward (S310, NO), the intermediate bar control process is ended.

[0062] (Bulk control processing) The general control process will now be described with reference to a flowchart of FIG 10.

[0063] As shown in FIG. 10, first, the state determination unit 303 determines whether the type of the received control signal is an up signal or not (S401).

[0064] If the type of the control signal is an up signal (S401, YES), the state determination unit 303 determines whether the bottom rail 31 and the intermediate bar 41 can be driven to rise (S402). Specifically, the state determination unit 303 determines that the bottom rail 31 and the intermediate bar 41 can be driven to rise when the bottom rail 31 is located below the first upper limit position and the intermediate bar 41 is located below the second upper limit position.

[0065] If the bottom rail 31 and the intermediate bar 41 can be driven upward (S402, YES), The speed adjustment process described below is executed (S404), and based on the results of the speed adjustment process, the lifting control unit 306 starts the upward drive of the bottom rail 31 to reach the first upper limit position and the upward drive of the intermediate bar 41 to reach the second upper limit position (S405), and the collective control process is then terminated.

[0066] On the other hand, if the bottom rail 31 and the intermediate bar 41 cannot be driven to rise (S402, NO), the collective control process is terminated.

[0067] Furthermore, in step S401, if the control signal is not an up signal, i.e., if the control signal is a down signal (S401, NO), the state determination unit 303 determines whether the bottom rail 31 and the intermediate bar 41 can be driven downward (S410). Specifically, the state determination unit 303 determines that the bottom rail 31 and the intermediate bar 41 can be driven downward when the bottom rail 31 is above the first lower limit position and the intermediate bar 41 is above the second lower limit position.

[0068] If the bottom rail 31 and the intermediate bar 41 can be driven downward (S410, YES), a speed adjustment process described below is executed (S412), and the lifting control unit 306 starts the downward drive of the bottom rail 31 to reach the first lower limit position and the downward drive of the intermediate bar 41 to reach the second lower limit position based on the processing result of the speed adjustment process (S413), and the collective control process is terminated.

[0069] On the other hand, in step S410, if the bottom rail 31 and the intermediate bar 41 cannot be driven downward (S410, NO), the collective control process is ended.

[0070] (Speed ​​adjustment process) The speed adjustment process will be described. Fig. 11 is a flow chart showing the operation of the speed adjustment process. Figs. 12 and 13 are explanatory diagrams for calculating the rising speed and the falling speed when the bottom rail is accelerated or the intermediate bar is decelerated, respectively. Figs. 14 and 15 are explanatory diagrams for calculating the rising speed and the falling speed when the intermediate bar is accelerated or the bottom rail is decelerated.

[0071] 11, first, the state determination unit 303 determines whether or not the bottom rail 31 and the intermediate bar 41 are close to each other (S501). Here, the state where the bottom rail 31 and the intermediate bar 41 are close to each other indicates a state where the separation distance between the bottom rail 31 and the intermediate bar 41 is within a predetermined distance range.

[0072] When the bottom rail 31 and the intermediate bar 41 are close to each other (S501, YES), the state determination unit 303 determines whether the bottom rail 31 and the intermediate bar 41 are objects to be driven upward (S502). Here, the object to be driven upward indicates that it is an object to be controlled by an upward signal. Similarly, the object to be driven downward indicates that it is an object to be controlled by a downward signal.

[0073] On the other hand, if the bottom rail 31 and the intermediate bar 41 are not close to each other (S501, NO), the distance determination unit 304 determines whether the first movement distance ML1 and the second movement distance ML2 are equal (S505). If the first movement distance ML1 and the second movement distance ML2 are equal (S505, YES), the state determination unit 303 determines whether the bottom rail 31 and the intermediate bar 41 are to be driven upward (S502).

[0074] Here, the first movement distance and the second movement distance will be described. As shown in Fig. 12 to Fig. 15, the first movement distance ML1 is the distance from the current position CP1 of the bottom rail 31 to the first upper limit position UL1 or the first lower limit position LL1 as a position reached by upward driving or downward driving. The second movement distance ML2 is the distance from the current position CP2 of the intermediate bar 41 to the second upper limit position UL2 or the second lower limit position LL2 as a position reached by upward driving or downward driving.

[0075] The first upper limit position UL1, the first lower limit position LL1, the second upper limit position UL2, and the second lower limit position LL2 can all be changed by the user to other positions. The first upper limit position UL1 can be changed to any position between the first upper limit position UL1 before the change and the first lower limit position LL1 before the change. FIG. 14 shows the first upper limit position MUL1 changed by the user as an example. The first lower limit position LL1 can also be changed to any position between the second lower limit position LL2 before the change and the first lower limit position LL1 before the change. That is, the user can change the first upper limit position UL1 and the first lower limit position LL1 to any position within the maximum range in which the bottom rail 31 can be raised and lowered.

[0076] Also, the second upper limit position UL2 can be changed to any position between the pre-change second upper limit position UL2 and the pre-change second lower limit position LL2. Also, the second lower limit position LL2 can be changed to any position between the pre-change second upper limit position UL2 and the pre-change second lower limit position LL2. FIG. 13 shows, as an example, the second lower limit position MLL2 changed by the user. That is, the user can change the second upper limit position UL2 and the second lower limit position LL2 to any position within the maximum range in which the intermediate bar 41 can be raised and lowered.

[0077] If the bottom rail 31 and the intermediate bar 41 are to be driven upward (S502, YES), the lifting control unit 306 drives only the intermediate bar 41 upward by a predetermined distance (S503). On the other hand, if the bottom rail 31 and the intermediate bar 41 are not to be driven upward, i.e., if the bottom rail 31 and the intermediate bar 41 are to be driven downward (S502, NO), the lifting control unit 306 drives only the bottom rail 31 downward by a predetermined distance (S504). This ensures a predetermined distance between the bottom rail 31 and the intermediate bar 41.

[0078] In this way, in a state where the bottom rail 31 and the intermediate bar 41 are close to each other or where the first movement distance ML1 and the second movement distance ML2 are equal, only the intermediate bar 41 is driven upward when the upward drive is performed, and only the bottom rail 31 is driven downward when the downward drive is performed, so that the bottom rail 31 and the intermediate bar 41 can be separated from each other prior to the upward drive or downward drive of the bottom rail 31 and the intermediate bar 41. This makes it possible to prevent a situation where the bottom rail 31 and the intermediate bar 41 become closer to each other than a certain distance during the upward and downward drive by adjusting the drive speed.

[0079] As shown in FIG. 11, after execution of steps S503 and S504, or in step S505, if the first moving distance ML1 and the second moving distance ML2 are not equal (S505, NO), the distance determination unit 304 determines whether the first moving distance ML1 is greater than the second moving distance ML2 (S512).

[0080] When the first movement distance ML1 is greater than the second movement distance ML2 (S512, YES), the speed calculation unit 305 determines whether or not the mode setting unit 307 has set the motorized shading device 1 to the deceleration mode (S513).

[0081] If the deceleration mode is set (S513, YES), the speed calculation unit 305 calculates an adjustment speed for decelerating the lifting and lowering speed of the intermediate bar 41 based on the first movement distance ML1 and the second movement distance ML2 (S514), and the speed adjustment process is terminated. On the other hand, if the deceleration mode is not set, that is, if the acceleration mode is set (S513, NO), the speed calculation unit 305 calculates an adjustment speed for increasing the lifting and lowering speed of the bottom rail 31 based on the first movement distance ML1 and the second movement distance ML2 (S515), and the speed adjustment process is terminated.

[0082] Here, the calculation of the specific adjustment speed when the intermediate bar 41 is decelerated or the bottom rail 31 is accelerated will be described with reference to Figs. 12 and 13. Fig. 12 shows a state in which the first movement distance ML1 at the start of the upward drive of the bottom rail 31 and the intermediate bar 41 is greater than the second movement distance ML2, that is, the bottom rail 31 is located farther from the final position than the intermediate bar 41. At this time, the speed calculation unit 305 calculates the ascending speed of the decelerated intermediate bar 41 or calculates the ascending speed of the accelerated bottom rail 31 so that the bottom rail 31 and the intermediate bar 41 reach the final positions (first upper limit position UL1, second upper limit position UL2) at the same time. Specifically, the ascending speed of the decelerated intermediate bar 41 is calculated by multiplying a value obtained by dividing the second movement distance ML2 by the first movement distance ML1 by a preset ascending speed. The increased ascending speed of the bottom rail 31 is calculated by multiplying a preset ascending speed by a value obtained by dividing the first moving distance ML1 by the second moving distance ML2.

[0083] FIG. 13 shows a state in which the first moving distance ML1 at the start of the downward drive of the bottom rail 31 and the intermediate bar 41 is greater than the second moving distance ML2, that is, the bottom rail 31 is located farther from the destination position than the intermediate bar 41. In this case, the speed calculation unit 305 calculates the accelerated downward speed of the bottom rail 31 or calculates the decelerated downward speed of the intermediate bar 41 so that the bottom rail 31 and the intermediate bar 41 reach the destination position (the first lower limit position LL1, the changed second lower limit position MLL2) at the same time. Specifically, the accelerated downward speed of the bottom rail 31 is calculated by multiplying the value obtained by dividing the first moving distance ML1 by the second moving distance ML2 by a preset downward speed. Also, the decelerated downward speed of the intermediate bar 41 is calculated by multiplying the value obtained by dividing the second moving distance ML2 by the first moving distance ML1 by a preset downward speed.

[0084] As shown in FIG. 11, in step S512, if the first moving distance ML1 is not greater than the second moving distance ML2, i.e., if the first moving distance ML1 is less than the second moving distance ML2 (S512, NO), the speed calculation unit 305 determines whether the mode setting unit 307 has set the motorized shading device 1 to the deceleration mode (S523).

[0085] If the deceleration mode is set (S523, YES), the speed calculation unit 305 calculates an adjustment speed for decelerating the lifting and lowering speed of the bottom rail 31 based on the first movement distance ML1 and the second movement distance ML2 (S524), and the speed adjustment process is terminated. On the other hand, if the deceleration mode is not set, that is, if the acceleration mode is set (S523, NO), the speed calculation unit 305 calculates an adjustment speed for increasing the lifting and lowering speed of the intermediate bar 41 based on the first movement distance ML1 and the second movement distance ML2 (S525), and the speed adjustment process is terminated.

[0086] Here, the calculation of the specific adjustment speed when the bottom rail 31 is decelerated or the intermediate bar 41 is accelerated will be described with reference to Figs. 14 and 15. Fig. 14 shows a state in which the first movement distance ML1 at the start of the upward drive of the bottom rail 31 and the intermediate bar 41 is smaller than the second movement distance ML2, that is, the intermediate bar 41 is located farther from the destination position than the bottom rail 31. At this time, the speed calculation unit 305 calculates the decelerated ascending speed of the bottom rail 31 or calculates the accelerated ascending speed of the intermediate bar 41 so that the bottom rail 31 and the intermediate bar 41 reach the destination position (the changed first upper limit position MUL1, the second upper limit position UL2) at the same time. Specifically, the decelerated ascending speed of the bottom rail 31 is calculated by multiplying the value obtained by dividing the first movement distance ML1 by the second movement distance ML2 by a preset ascending speed. Moreover, the increased ascending speed of the intermediate bar 41 is calculated by multiplying a preset ascending speed by a value obtained by dividing the second moving distance ML2 by the first moving distance ML1.

[0087] FIG. 15 shows a state in which the first movement distance ML1 at the start of the downward drive of the bottom rail 31 and the intermediate bar 41 is smaller than the second movement distance ML2, that is, the intermediate bar 41 is located farther from the destination position than the bottom rail 31. In this case, the speed calculation unit 305 calculates the decelerated downward speed of the bottom rail 31 or calculates the accelerated downward speed of the intermediate bar 41 so that the bottom rail 31 and the intermediate bar 41 reach the destination positions (first lower limit position LL1, second lower limit position LL2) at the same time. Specifically, the decelerated downward speed of the bottom rail 31 is calculated by multiplying a value obtained by dividing the first movement distance ML1 by the second movement distance ML2 by a preset downward speed. Also, the accelerated downward speed of the intermediate bar 41 is calculated by multiplying a value obtained by dividing the second movement distance ML2 by the first movement distance ML1 by a preset downward speed.

[0088] As described above, according to the motorized shading device 1 of this embodiment, the bottom rail 31 and the intermediate bar 41 that are driven to move up and down can be moved so that they reach the destination position at approximately the same time by decelerating one of the bottom rail 31 and the intermediate bar 41 that is closer to the destination position or by accelerating the other that is farther from the destination position. In addition, by decelerating one of the bottom rail 31 and the intermediate bar 41, it is possible to reduce power consumption without increasing the time required for the lift control of the motorized shading device 1, and to reduce the noise of the operation associated with the lift control. In addition, by accelerating the other of the bottom rail 31 and the intermediate bar 41, it is possible to shorten the time required for the lift control of the motorized shading device 1.

[0089] In this embodiment, the pleated screen equipped with two types of screens is used as the motorized shading device 1, but it is sufficient if it is equipped with two shading materials connected in the vertical direction and can be electrically raised and lowered. An example of such a motorized shading device 1 is a blind equipped with two slat groups connected in the vertical direction, each of which includes a plurality of slats.

[0090] In this embodiment, the lifting speed of either the bottom rail 31 or the intermediate bar 41 is adjusted, but the lifting speeds of both may be adjusted simultaneously if they reach their final positions at approximately the same time. That is, the lifting speeds of both the bottom rail 31 and the intermediate bar 41 may be adjusted so that they reach their final positions at approximately the same time.

[0091] The present invention can be implemented in various other forms without departing from the spirit or main features thereof. Therefore, the above-described embodiments are merely illustrative in all respects and should not be interpreted as being limiting. The scope of the present invention is defined by the claims and is not limited to the text of the specification. Furthermore, all modifications, various improvements, substitutions and alterations within the scope of the claims are within the scope of the present invention. [Explanation of symbols]

[0092] 1 Electric shielding device 3. Control device 31 Bottom rail (first moving member) 33 Screen (lower shielding material) 41 Intermediate bar (second moving member) 44 Screen (upper shielding material) 301 Signal receiving unit 303 Status Judgment Unit 304 Distance determination unit 305 Speed ​​calculation section 306 Lift control section

Claims

1. A control device for controlling an electric shielding device in which a first moving member provided below a lower shielding member of two shielding members provided in a vertically connected arrangement, and a second moving member provided between the upper shielding member and the lower shielding member of the two shielding members, can be independently raised and lowered by a driving force of a motor, A control device comprising an elevation control unit that, when the first moving member and the second moving member are raised simultaneously, raises the first moving member at a faster elevation speed than the second moving member, or, when the first moving member and the second moving member are lowered simultaneously, lowers the second moving member at a faster descending speed than the first moving member.

2. The control device described in claim 1, characterized in that, when the first moving member and the second moving member are raised simultaneously, the lifting control unit raises the first moving member at a set speed that is preset as the raising speed of the first moving member, and raises the second moving member at an raising speed that is decelerated from the set speed.

3. The control device described in claim 1, characterized in that, when the first moving member and the second moving member are raised simultaneously, the lifting control unit raises the second moving member at a set speed that is preset as the raising speed of the second moving member, and raises the first moving member at an raising speed that is an increased speed of the set speed.

4. The control device described in claim 1, characterized in that, when the first moving member and the second moving member are lowered simultaneously, the lifting control unit lowers the first moving member at a set speed that is preset as a descent speed of the first moving member, and lowers the second moving member at a descent speed that is an increased speed of the set speed.

5. The control device described in claim 1, characterized in that, when the first moving member and the second moving member are lowered simultaneously, the lifting control unit lowers the second moving member at a set speed that is preset as a descent speed of the second moving member, and lowers the first moving member at a descent speed that is decelerated from the set speed.

Images