JP3499459B2 - Electric blinds - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric blind for automatically controlling a raising and lowering operation and an angle adjusting operation of a slat based on a preset set value.

[0002]

2. Description of the Related Art In recent years, an electric blind control device for automatically controlling the operation of a large number of electric blinds installed on each floor of a building based on a preset program or operation of operation switches has been put into practical use. There is.

In such an electric blind, when the slat is pulled up, the slat lifting motor arranged in the head box is actuated to wind the lifting tape by the lifting tape winding device, and the winding operation is performed. Causes the lifting tape to be pulled up and the slat and bottom rail to be pulled up. Further, when the slat is lowered, the lifting tape is rewound from the lifting tape winding device, and the slat and the bottom rail are lowered.

In addition, the above-mentioned electric blind is
An upper limit switch is provided to stop the pulling motion of the slat when the slat is pulled to the upper limit, and a lower limit switch that stops the descent motion of the slat when the slat is lowered to the lower limit.

The upper limit switch is arranged, for example, on the lower surface of the head box, and is pressed by the uppermost slat when the slat is pulled up to the upper limit, and stops the operation of the slat lifting motor based on the pressing operation. It has become.

The lower limit switch is arranged below the head box so as to detect the degree of tension of the lifting tape hung from the head box only when the slat is lowered. Then, when the bottom rail is lowered to the lower limit and supported by the ladder cord, the lifting tape is loosened, so the lower limit switch detects the looseness of the lifting tape and stops the operation of the slat lifting motor.

Further, the lower limit switch detects the slack of the lifting tape and stops the operation of the slat lifting motor even when the bottom rail comes into contact with an obstacle and cannot be lowered during the lowering operation of the slat. Let Therefore, the lower limit switch also operates as an obstacle detection stopping means.

Further, the lower limit switch detects the slack of the lifting tape and stops the operation of the slat lifting motor even when the lifting tape is cut during the lowering operation of the slat.

[0009] Japanese Patent Laid-Open No. 3-275889, when the tension of the lift cord becomes excessively large, there have is when the over small, the control device for stopping the operation of the motor is disclosed.

In this control device, the operation of the motor is stopped when the bottom rail descends to the lower limit during the descent operation of the slat, or when the bottom rail comes into contact with some obstacle and the tension acting on the elevating cord becomes too small. To be done. Also,
The operation of the motor is stopped even when the lifting cord is cut and the tension acting on the lifting cord becomes too small.

In addition, the slat is raised to the upper limit,
When the tension acting on the lifting string becomes excessive, the operation of the motor is stopped, and when the slat or the bottom rail cannot be lifted due to some obstacle during the slat pulling operation, the operation of the motor is stopped.

In the electric blind as described above, the slat elevating shaft for driving the elevating tape winding device and the slat angle adjusting shaft for driving the ladder cord supporting device are the same shaft. As shown, there is a type in which each slat 39 can be raised and lowered only in a state of being rotated in a substantially vertical direction.

In some electric blinds in which the slat elevating shaft and the slat angle adjusting shaft are independently provided, the slat can be moved up and down at an arbitrary angle.

[0014]

In the electric blind as described above, since the lower limit switch operates only when the slats are descending, even if one of the lifting tapes is cut during the lifting of the slats, the slats are raised and lowered. The operation of the motor is not stopped, the uncut cutting tape is wound up, and, for example, only one of the slat and the bottom rail is pulled up to the upper limit, and is stopped in the one-sided raised state.

Then, even if the slats are lowered from this state to repair the cut lifting tape, the lower limit switch detects the looseness of the lifted tape and prevents the operation of the slat lifting motor. Therefore, the slats cannot be lowered. Therefore, there is a problem that repair work of the lifting tape becomes complicated.

In the electric blind disclosed in JP-A-3-275889, the operation of the slat lifting motor can be stopped even if the lifting strap is cut during the lifting operation of the slat. However, the biasing force of the coil spring of the tension sensing unit must be set so as to be balanced with the weight of the bottom rail and slat acting on the lifting string, which makes the setting work of the biasing force of the coil spring complicated and If the biasing force of the spring is not set appropriately, there is a problem that malfunction occurs.

Further, as shown in FIG.
When the slat 39 is moved up and down in a state where the slat 39 is rotated in the vertical direction, the lift tape 37 rubs against the peripheral edge of the insertion hole 45 of each slat 39 and is easily worn, which causes the lift tape 37 to be cut. There is a problem.

An object of the present invention is to provide an electric blind which can prevent a trouble due to cutting of a hoisting cable in advance and stably.

[0019]

According to a first aspect of the present invention, there is provided a head
Slat and multi-stage slats
The bottom rail is suspended and supported, and the slats are equipped with lifting cables.
Insert the bottom rail and attach the bottom rail to the bottom of the rope.
Suspend and support the hoisting rope by the driving force of the motor.
The slat can be raised and lowered by and
The slats can be angled via the ladder cord,
The motor is the slat height and slat set by the operating device.
Motor control device that operates based on the set value of rat angle
In an electric blind that can be driven by
The control device, prior to the lifting operation based on the set value,
Between the hoisting line and the slats during slat lifting operation
In order to reduce the friction of the
Rotate the rat to the specified angle when moving it up and down, then
Raise and lower the slats to the set value and
Rotate to the set angle.

In claim 2, the predetermined angle is in the horizontal direction.
Within ± 60 degrees. In claim 3, the predetermined angle
Degree is the angle when the slat is raised
The angle was closer to the horizontal direction than the angle during operation.

According to a fourth aspect of the present invention, the operating device has a plurality of power sources.
It is possible to output the set value to the motor control device of the moving blind
The motor control device for each electric blind is
The moving blind slats should be
After rotating it at a constant angle, it will be raised all at once based on the set value.
A synchronous lifting device for starting the descending operation was provided. In claim 5, the motor control device rotationally drives the slat lifting shaft.
Rotate the slat lifting motor and the slat angle adjusting shaft.
It is possible to control the slat angle adjusting motor that is driven to rotate.
Before driving the slat lifting shaft based on the set value
Drive the slat angle adjustment shaft.

In the sixth aspect, the predetermined angle is the slats.
The angle when pulling up the
The angle at the time of production was set to an angle other than the horizontal direction. In claim 7, from the head box via the ladder cord
Suspend and support slats and bottom rails,
The hoisting cable is inserted through the upper and lower
Suspending and supporting the Tom Rail, and using the driving force of the motor
If the slats can be raised and lowered by raising and lowering
Both angle adjustment of the slats via the ladder cord
Slack in the hoisting rope in the head box
Provided with a lower limit detection device that outputs a detection signal when detected,
The motor is a slat height set by an operating device and
A motor control device that operates based on the set value of the slat angle.
Drive, and the motor control device detects the lower limit.
The operation of the motor is based on the detection signal output from the device.
In an electric blind that can stop motion,
The controller controls the slat when it is raised and when it is lowered.
At the time of operation, based on the detection signal of the lower limit detection device, the mode
The operation of the data can be stopped and the
During the slat lifting operation prior to the slat lifting operation
To reduce the friction between the hoisting rope and the slats.
In order to prevent the slats from
Rotate it to a specified angle, then set the slat to the set value.
Raise and lower to the height and move the slats to the set angle.
Rotate.

In the eighth aspect, the lower limit detection device is the
Extend the detector at the hanging position of the hoisting rope, and use the detector to raise the
It consisted of a limit switch that detects slack in the descending rope.

According to a ninth aspect, the motor control device includes:
Disables the detection signal output from the lower limit detection device
For maintaining the motor by the operating device.
A nonce mode setting device was provided.

According to a tenth aspect, the head box has
Is based on the detection signal when the slat is pulled up.
Therefore, a display device for displaying an abnormality is provided.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. As shown in Figure 1,
A large number of electric blinds 1 are connected by a common signal line 2 and are grouped into specific areas, for example, first to fourth areas A to D.

A personal computer 3 is connected to the signal line 2 as a central control unit. A program for automatically controlling the blinds 1 in each of the areas A to D is preset in the personal computer 3, and the personal computer 3 operating based on the program can perform the slat lifting operation and the slat angle adjusting operation of each blind 1. It is automatically controlled.

Area switches 4a to 4d are provided for the first to fourth areas A to D, respectively.
a to 4d are connected to the signal line 2. By operating the area switches 4a to 4d, the slat lifting operation and the slat angle adjusting operation of the electric blind 1 in the corresponding area or the electric blind 1 in another area can be controlled in preference to the control by the personal computer 3. Has become.

A single switch 5 is connected to each of the electric blinds 1. This independent switch 5
It is used when operating the corresponding electric blinds, all the blinds 1 in the area, or the blinds 1 in a predetermined group preset in the area.

The operation panel 6 of the individual switch 5 is shown in FIG.
Shown in. On the operation panel 6, an elevating lever 7, a rotating lever 8, a batch key 9, a permit key 10, a prohibition key 11 and a stop key 12 are formed.

The raising / lowering lever 7 is supported on the operation panel 6 so as to be movable in the vertical direction. When the raising / lowering height of the slat is set, the raising / lowering lever 7 is moved up and down to raise and lower the slat. The height can be set.

The rotary lever 8 is supported on the operation panel 6 so as to be movable in the vertical direction, and is used when setting the slat angle. When the rotary lever 8 is positioned in the middle in the vertical direction, the slat is horizontally rotated, and as the rotary lever 8 is moved upward, the slat is rotated to one side and rotated to the vertical direction. As 8 is moved downwards, the slats are rotated to the other side until vertical.

The permit key 10 is used when permitting automatic control based on the program set in the personal computer 3, and the inhibit key 11 is used when inhibiting automatic control by the personal computer 3. The stop key 12 is used to stop driving the electric blind 1.

The simultaneous key 9 is used to simultaneously drive the electric blinds 1 in a predetermined group based on the height and angle of the slats set by the elevating lever 7 and the rotating lever 8.

The electrical construction of each electric blind 1 and individual switch 5 is shown in FIG. The operation unit 13 of the independent switch 5 is each lever and each key on the operation panel 6, and the operation signal thereof is input to the CPU 14.

The ROM 15 connected to the CPU 14 stores the slat angle when the slat is raised and lowered,
When the electric blinds 1 in the group are operated all at once, data such as a waiting time from the rotation operation of the slats to the elevating operation is preset.

EEPROM connected to the CPU 14
Area setting data and the like are written in advance from the personal computer 3 in the area 16. The setting switch unit 17 connected to the CPU 14 is composed of a DIP switch or the like,
The switch address of the independent switch 5 can be set.

Input / output unit 18 connected to the CPU 14
Inputs a signal externally input to the single switch 5 via the signal line 2 to the CPU 14, and
The signal output from 14 is output to the electric blind 1 via the signal line 2.

Then, the CPU 14 outputs a control signal based on a preset program, a signal input from the operation section 13, the data stored in the ROM 15 and the EEPROM 16 and the data set by the setting switch section 17. Is generated and the control signal thereof is input / output section 18
To the corresponding electric blind 1 via.

A blind controller 19 is arranged in the head box of the electric blind 1. A power supply unit 20 in the blind controller 19 supplies power to each circuit and motor of the electric blind 1.

The input section 21 in the blind controller 19 is connected to the CPU 22. The output signal of the independent switch 5 is sent to the CPU via the input unit 21.
22 is input.

The LED display unit 23 connected to the CPU 22 drives the light emitting diodes 43a to 43c exposed on the lower surface of the head box, as will be described later, and each LED display unit 23 is driven by a control signal output from the CPU 22. The light emitting diodes 43a to 43c are turned on.

EEPROM connected to the CPU 22
In the area 24, area setting data for setting an area to which the electric blind 1 belongs and upper and lower limits for moving up and down the slat are stored.

The setting switch section 25 connected to the CPU 22 is composed of a DIP switch exposed on the lower surface of the head box of the electric blind 1, as will be described later.
The address of the blind, the type of the blind, or the maintenance mode can be set. Then, the setting signal is input to the CPU 22.

Input / output unit 26 connected to the CPU 22
Is connected to the input / output unit of another electric blind 1 in the same group via a signal line 2. Then, among the operation signals input from the independent switch 5 to the CPU 22, the operation signal of the other electric blind 1 is output from the input / output unit 26 to the input / output unit of the other electric blind 1 via the signal line 2. It The operation signal output from the input / output unit of the other electric blind 1 is transmitted to the CPU 22 via the input / output unit 26.
Entered in.

The first motor drive unit 27 connected to the CPU 22 drives the slat lifting motor 28 arranged in the head box based on the motor control signal output from the CPU 22.

The second motor drive unit 29 connected to the CPU 22 drives the slat angle adjusting motor 30 arranged in the head box based on the motor control signal output from the CPU 22.

Encoder 3 connected to the CPU 22
Reference numeral 1 is for converting the rotation of the slat elevating shaft, which is rotationally driven by the slat elevating motor 28 in the head box, into a pulse signal and outputting it to the CPU 22.
The PU 22 counts the number of pulses to detect the rotation angle of the slat elevating shaft.

The upper limit switch 32 connected to the CPU 22 outputs a detection signal to the CPU 22 when the slat is pulled up to the upper limit. CPU 22
The lower limit switch connected to detects the slack of the slat elevating tape as will be described later and outputs the detection signal to the CPU 22.

In such a blind controller 19, the CPU 22 stores a preset program,
The operation signal input from the input unit 21 and the EEPROM 2
4 and the data set in the setting switch unit 25 to perform the lifting operation and the angle adjusting operation of the slat.

Then, the CPU 22 stops the operation of the slat lifting motor 28 based on the count of the pulse signals output from the encoder 31 when the slats are lifted up to the preset slat height.

Further, the CPU 22 stops the operation of the slat lifting motor in the slat pulling direction based on the detection signal of the upper limit switch 32 during the slat pulling up operation, and lowers the lower limit during the slat pulling up operation or the slat lowering operation. Based on the detection signal of the limit switch 33, the operation of the slat lifting motor is stopped.

Specific structures of the upper limit switch 32 and the lower limit switch 33 will be described with reference to FIGS. A winding pulley 36 is rotatably supported by a supporting member 35 arranged in the head box 34 of the electric blind 1, and an upper end portion of an elevating tape 37 as an elevating rope is attached to the winding pulley 36. ing. Then, as shown in FIG. 13, the elevating tape 37 is inserted through the insertion holes 45 of each slat 39, and the bottom rail 46 is suspended and supported at the lower end thereof.

A slat elevating shaft 38 is inserted into the center of the take-up pulley 36 so as not to rotate relative to it, and the slat elevating shaft 38 is rotationally driven by the slat elevating motor 28. Therefore, when the slat lifting shaft 38 is rotated in the slat pulling up direction by the slat lifting motor 28,
The lifting tape 37 is wound around the winding pulley 36,
When the bottom rail 46 and the slat 39 are pulled up and the slat elevating shaft 38 is rotated in the slat descending direction, the elevating tape 37 is rewound from the winding pulley 36,
The bottom rail 46 and the slats 39 are adapted to descend.

A ladder cord 44 is suspended and supported from the supporting member 35 at the side of the elevating tape 37, and the ladder cord 44 supports the slat 39 in multiple stages, as shown in FIGS. 14 and 15. The bottom rail 46 is connected to the lower end of the ladder cord 44.

The upper end of the ladder cord 44 is attached to a ladder cord supporting device (not shown) supported by the supporting member 35, and the ladder cord supporting device is operated by the slat angle adjusting motor 30 to adjust the slat angle. It is driven via an adjusting shaft (not shown). Therefore, each slat 39 is rotated in the same phase based on the operation of the slat angle adjusting motor 30.

The upper limit switch 32 composed of a micro switch is arranged on the bottom surface of the head box 34 on the side of the support member 35.
The detector 32a of the upper limit switch 32 is projected below the head box 34, and when the detector 32a is pushed upward by the uppermost slat 39, the upper limit switch 32 outputs the detection signal to the CPU 22. It has become so.

At the lower part of one side of the supporting member 35, the lower limit switch 33 composed of a micro switch is provided.
The detector of the lower limit switch 33 is arranged to be pressed by a slide base 40 movably supported by a support member 35, as shown in FIG.

The slide base 40 is supported by the lower portion of the support member 35 so as to be movable in the front-rear direction of the head box 34, and is biased in the direction of arrow A by the biasing force of a coil spring (not shown).

A guide roller 41 is rotatably supported at the center of the slide base 40, and the lifting tape 3
7 is guided from the winding pulley 36 through a guide roller 41 to the lower part of the head box 34.

Therefore, due to the weight of the bottom rail 46 and the slats 39 acting on the elevating tape 37, the slide base 40 is pushed in the direction of arrow B and is in the state shown in FIG. The detector is pressed.

When the bottom rail 46 is lowered to the lowest limit, or when it comes into contact with an obstacle and cannot be lowered, the weights of the bottom rail 46 and the slats 39 do not act on the lifting tape 37. Then, the slide base 40 is moved to the arrow A by the biasing force of the coil spring.
Direction, the detector of the lower limit switch 33 is not pressed and the lower limit switch 33 moves to the CPU 22.
The detection signal is output to.

Even when the lifting tape 37 is cut, the bottom rail 46 and the slats 3 are attached to the lifting tape 37.
The weight of 9 stops working. Also in this case, the lower limit switch 33 outputs the detection signal to the CPU 22.

As shown in FIG. 6, the head box 3
On the lower surface of 4, the setting switch section 25 is composed of first to third dip switch groups 42a to 42c. The first dip switch group 42a can set the address and the like of the electric blind 1, the second dip switch group 42b can set the model and the like of the electric blind 1, and the third dip switch group. 42c is used when selecting a maintenance mode or the like.

When the maintenance mode is set by the third dip switch group 42c, the CPU 22 causes the upper limit switch 32 and the lower limit switch 33 to operate.
Irrespective of the detection signal, the motors 28 and 30 are operated based on the operation signals input from the independent switch 5 and the area switches 4a to 4d to perform the slat lifting and angle adjusting operations.

Three light emitting diodes 43a to 43c constituting the LED display section 23 are attached to the sides of the dip switch groups 42a to 42c. The light emitting diodes 43a to 43c are in communication with the abnormality display diode 43a for displaying an operation abnormality of the electric blind 1, and the electric blind 1 with any one of the independent switches 5, the area switches 4a to 4d, the personal computer 3, and the like. The CPU 22 includes a communication display diode 43b that indicates that the electric power is being supplied to the electric blind 1, and a power supply display diode 43c that indicates that power is being supplied to the electric blind 1.
It lights up based on the control signal output from.

Next, the operation based on the operation of the individual switch 5 of each electric blind 1 constructed as described above will be described. As shown in FIG. 7, the lifting lever 7 is operated by the independent switch 5.
Alternatively, when the rotating lever 8 is operated to change the set value of the slat height or the slat angle (step 1), the CPU 14 takes in the newly set slat height and slat angle (step 2).

Next, the CPU 14 detects whether or not the operation of the elevating lever 7 or the rotating lever 8 is completed (step 3), and if not completed, steps 1 to 3 are repeated.

Next, the CPU 14 uses the other independent switch 5
It is detected whether or not the operation signal from is input (step 4), and if it is input, the transmission of the set value to the blind controller 19 of the electric blind 1 is stopped (step 5), and the step is performed. Return to 1.

If no operation signal is input from the other independent switch 5 in step 4, C
The PU 14 detects whether or not the batch key 9 has been pressed (step 6), and moves to the next step based on the result.

When the batch key 9 is pressed in step 6, the CPU 14 causes the CPU 14 to execute step 1 as shown in FIG.
In step 7, it is detected whether or not the set value of the slat height is changed by the elevating lever 7 (step 7), and when the set value of the slat height is changed, the set value is currently changed. Then, it is detected whether or not the slat height is further increased (step 8).

Then, in step 8, if the new set value of the slat height is higher than the current slat height, the CPU 14 sends the slat angle data Su to the blind controller 19 of each electric blind 1 in the same group. (Step 9). The slat angle data Su sets the angle of each slat when the slat is pulled up, and is set within a range of ± 60 degrees when the slat in the horizontal state is 0 degree.

If the new set value of the slat height is lower than the current slat height in step 8, the CPU 14 sends the slat angle data Sd to the blind controller 19 of each electric blind 1 in the same group. (Step 10). This slat angle data Sd sets the angle of each slat during the descending motion of the slat, and is larger than the slat angle data Su in the range of ± 60 degrees when the slat in the horizontal state is 0 degree. Set by value.

Therefore, for example, the slat angle data Sd during the slat lowering motion is set to 60 degrees, and the slat angle data Su during the slat pulling motion is set to 40 degrees. Next, the CPU 14 waits for a preset T seconds (step 11). This T second wait is
From the state in which the current slat angles of the electric blinds 1 in the same group are not uniform, the slat rotation operation is started in each electric blind 1, and the slat angle data Su,
This is to secure a time margin until it is rotated to the same angle set by Sd, and after T seconds, the slat angle of each electric blind 1 is the slat angle data Su, S.
The same angle is set in d.

Next, the CPU 14 sends the set values of the slat height and the slat angle fetched in step 2 to the blind controller 19 of each electric blind 1 (step 12) and returns to step 1.

When the set value of the slat height is not changed by the elevating lever 7 in step 7, the CPU 14 proceeds to step 12 and outputs only the set value of the slat angle to the blind of each electric blind 1. Send to controller 19 and return to step 1.

In step 6, when the all-keys 9 is not pressed, the CPU 14 carries out the operation shown in FIG. That is, steps 13 to 17 in FIG.
Step 11 is omitted from the operation shown in FIG. 1 and the transmission operation is performed by one electric blind 1 corresponding to the single switch 5.
The blind controller 19 of FIG.

With this operation, the same operation is performed only in the corresponding one electric blind 1. Next, the operation of the electric blind 1 that operates based on the operation signal output from the independent switch 5 as described above will be described.

As shown in FIG. 10, the CPU 22 in the blind controller 19 of the electric blind 1 first detects whether or not the maintenance mode is set (step 21).

When the maintenance mode is set in the third dip switch group 42c, the CPU 22 causes the levers 7 and 8 of the independent switch 5 to operate regardless of the detection signal input from the upper limit switch 32 and the lower limit switch 33. The slat lifting motor 28 and the slat angle adjusting motor 30 are rotationally driven only by an operation signal based on the operation of the stop key 12 and the slat lifting operation and the angle adjusting operation are performed (step 22).

When the maintenance mode is not set in step 21, the CPU 22 first waits for the input of the angle data Su, Sd or the set value of the slat angle by the rotary lever 8 (step 2).
3, 24).

If the slat angle setting value is input without inputting the angle data Su or the same Sd, C
The PU 22 drives the slat angle adjusting motor 30,
Rotate the slat to the set value (step 25).

In step 23, the angle data Su,
When detecting any input of Sd, the CPU 22 fetches the input angle data Su or Sd (step 26).

Next, the CPU 22 causes the angle data Su, S
It is detected which of d is input (step 27),
When the angle data Su is input, the slat pulling operation is performed, and when the angle data Sd is input, the slat lowering operation is performed.

In step 27, when the angle data Su at the time of pulling up the slat is input, the CPU 22 causes the slat angle adjusting motor 30 to operate, as shown in FIG.
Is driven to rotate the slats to a predetermined angle within ± 60 degrees (step 28).

Next, the CPU 22 takes in the set values of the slat height and the slat angle output from the individual switch 5 in step 12 or step 17 (step 29), and first drives the slat lifting motor 28 to rotate in the slat pulling direction. (Step 30).

Next, the CPU 22 determines whether or not a detection signal is input from the upper limit switch 32 (step 3
1) and whether a pulse signal is input from the encoder 31 (step 32) is detected.

In step 31, when the detection signal is input from the upper limit switch 32, the slat is pulled up to the upper limit, so the CPU 22 stops the operation of the slat lifting motor 28 (step 3
8) Return to step 21.

In the state where the detection signal is not input from the upper limit switch 32 in step 31 and the pulse signal is not input from the encoder 31 in step 32, the slat cannot be pulled up due to some trouble, so the CPU 22 Abnormality display diode 4
3a is turned on (step 37), the operation of the slat lifting motor 28 is stopped (step 38), and the process returns to step 21.

In steps 31 and 32, the slats 3
9 is not yet raised to the upper limit, and the slat lifting shaft 38 is normally rotated, the CPU 2
2 waits for N seconds (step 33), and then detects whether or not the detection signal of the lower limit switch 33 is input (step 34).

In step 34, when the detection signal of the lower limit switch 33 is input, the slats 39
Since the lifting tape 37 is slacked during the pulling up operation, the lifting tape 37 may be cut. In this case, the CPU 22 turns on the abnormality display diode 43a (step 37), stops the operation of the slat lifting motor 28 (step 38), and returns to step 21.

The purpose of the waiting operation for N seconds in step 33 is that the bottom rail 46 is slightly lifted and lifted by the weight of the bottom rail 46 when the slat 39 is raised from the lowest limit. Lower limit switch 33 until tape 37 is securely tensioned
By preventing the detection signal from being input, abnormal stop of the slat pulling operation during normal operation is prevented.

Next, the CPU 22 detects whether or not a stop signal due to the stop key 12 being pressed is input from the independent switch 5 (step 35). When the stop signal is input, the operation of the slat lifting motor 28 is stopped (step 38), and step 2
Return to 1.

When the stop signal is not input, the CPU 22 determines whether the slat 39 is pulled up to the height of the set value set by the elevating lever 7 based on the pulse signal output from the encoder 31. The determination is made by counting the number of pulses (step 36).

When the slats are pulled up to the set value, the operation of the slat lifting motor 28 is stopped (step 39). If the slats have not been raised to the set value yet, the operations of steps 31 to 36 are repeated.

When the slats are raised to the set value, C
The PU 22 drives the slat angle adjusting motor 30,
The slat is rotated by the rotating lever 8 to the set angle (steps 40 and 41). When the slat is rotated to the set angle, the operation of the slat angle adjusting motor 30 is stopped (step 42) and the process returns to step 21.

In step 27, when the angle data Sd at the time of slat lowering operation is input, the CPU 22 drives the slat angle adjusting motor 30 to set the slat within a predetermined range of ± 60 degrees as shown in FIG. Rotate to the angle (step 43).

Next, the CPU 22 takes in the set values of the slat height and the slat angle output from the individual switch 5 in step 12 or step 17 (step 44), and first drives the slat lifting motor 28 to rotate in the slat lowering direction. (Step 45).

Then, the CPU 22 determines whether or not the detection signal is input from the lower limit switch 33 (step 4).
6) and whether a pulse signal is input from the encoder 31 (step 47) is detected.

In step 46, when the detection signal is input from the lower limit switch 33, the slats 39 are lowered to the lower limit, or the bottom rail cannot be lowered due to some obstacle, or the elevating tape. Since 37 is cut, C
The PU 22 stops the operation of the slat lifting motor 28 (step 52).

In the state where the detection signal is not input from the lower limit switch 33 in step 46 and the pulse signal is not input from the encoder 31 in step 47, the slat 39 cannot be lowered due to some trouble, so the CPU 22 Turns on the abnormality display diode 43a (step 50), stops the operation of the slat lifting motor 28 (step 51), and returns to step 21.

In steps 46 and 47, the slats 3
When 9 is not yet lowered to the lower limit and the slat elevating shaft 38 is normally rotated, the CPU 22 determines whether the stop signal due to the stop key 12 being pressed from the independent switch 5 is input. Detect (step 4)
8). When the stop signal is input, the operation of the slat lifting motor 28 is stopped (step 51) and the process returns to step 21.

When the stop signal is not input, the CPU 22 determines whether the slat 39 is lowered to the height of the set value set by the elevating lever 7 based on the pulse signal output from the encoder 31. The determination is made by counting the number of pulses (step 49).

When the slats have been lowered to the set value, the operation of the slat lifting motor 28 is stopped (step 52). If the slat 39 has not yet dropped to the set value, the operations of steps 46 to 49 are repeated.

When the slat 39 descends to the set value, C
The PU 22 drives the slat angle adjusting motor 30,
The slats 39 are rotated by the rotating lever 8 to the set angle (steps 53 and 54). And slats 39
When is rotated to the set angle, the operation of the slat angle adjusting motor 30 is stopped (step 55), and the process returns to step 21.

With the electric blind constructed as described above, the following operational effects can be obtained. (1) When the height and the angle of the slat 39 are set by the single switch 5, the slat height and the slat angle of the plurality of electric blinds 1 in the group to which the single switch 5 belongs can be collectively controlled.

(2) When the height and the angle of the slat 39 are set by the individual switch 5, the slat height and the slat angle of one electric blind 1 corresponding to the individual switch 5 can be controlled.

(3) Even when the slat is pulled up, the lower limit switch 33 can detect the slack of the lifting tape 37 and stop the operation of the slat lifting motor 28. Therefore, if the lifting tape 37 is cut during the slat pulling up operation, the operation of the slat lifting motor 28 can be immediately stopped to prevent the slats 39 from rising up.

(4) The lower limit switch 33 may be constructed so as to detect whether or not the lifting tape 37 is strained by the weight of the bottom rail 46 and the slats 39 based on the movement of the slide base 40. Mechanical installation conditions such as the biasing force of the spring are lenient, and slack and breakage of the lifting tape 37 can be detected stably.

(5) When the operation of the slat lifting motor is stopped based on the cutting of the lifting tape 37 during the lifting operation of the slat 39, the abnormality indicating diode 43 exposed on the lower surface of the head box 34 of the electric blind 1
Since a is turned on, it is possible to easily confirm the presence or absence of abnormality.

(6) When the slat 39 is pulled up, the slat lifting motor 2 is cut based on the cutting of the lifting tape 37.
After the operation of 8 is stopped, when the maintenance mode is set by the third dip switch group 42c, the slat lifting motor 28 is operated by the operation of the independent switch 5 to lift the slat 39 of the electric blind 1. be able to. Therefore, even after the operation of the slat lifting motor 28 is stopped by cutting the lifting tape 37, the upper limit switch 32 and the lower limit switch 33
Regardless of the state, the slat 39 can be moved up and down by operating the independent switch 5, and the lifting tape 37 can be easily repaired.

(7) When the slats 39 are raised and lowered, as shown in FIG.
As shown in FIG. 3, each slat 39 can be rotated within a range of ± 60 degrees from the horizontal direction prior to the raising / lowering operation, and then the raising / lowering operation of the slat 39 can be performed. Therefore, it is possible to reduce the friction between the lifting tape 37 and the slat insertion hole 45 during the lifting operation of the slat 39, and prevent the lifting tape 37 from being cut due to wear.

(8) The angle of the slat 39 at the time of pulling up is closer to the horizontal direction than the angle at the time of descending.
The friction between the elevating tape 37 and the insertion hole 45 of the slat 39 becomes larger during the pulling operation than during the descending operation of the slat 39. It is possible to reliably reduce wear of the lifting tape 37.

(9) When the slat 39 is descending, the angle of the slat 39 is set not within the horizontal direction but within ± 60 degrees with respect to the horizontal direction. When the descending operation is performed with the slats 39 in the horizontal direction, as shown in FIG. 14, the edges of the slats 39 may be caught by the warp threads of the ladder cord 44, and the angles of the slats 39 may become uneven. In this embodiment, since the descending operation is performed with the slats 39 tilted, as shown in FIG. 15, the edges of the slats 39 and the warp threads of the ladder cords 44 are prevented from being caught and the angle of each slats 39 is prevented. It is possible to perform the descending operation in the state where they are aligned.

(10) When simultaneously raising and lowering a plurality of electric blinds 1 in the same group, from the start of the rotating operation of the slats 39 of each electric blind 1 to the rotation of a predetermined angle during the raising and lowering operation. After waiting for T seconds longer than the time required for, the lifting and lowering operation of the slat can be started. Therefore, even if the slat angles of the electric blinds 1 are not uniform when starting the raising / lowering operation of the slats 39, the slats of the electric blinds 1 are raised / lowered after rotating the slats of the electric blinds 1 to the same angle. You can start all at once, so each electric blind 1
Slat 39 with the bottom rails 46 of the same height.
Can be moved up and down. As a result, it is possible to improve the aesthetic appearance of the slat lifting operation.

(11) If an operation signal is sent from the other individual switch 5 to the electric blind 1 before the operation signal for raising and lowering is sent from the individual switch 5 to the electric blind 1, The transmission of the operation signal from the switch 5 can be stopped. Therefore, each electric blind 1 can be operated based on the earliest operation signal among the operation signals input from the plurality of independent switches 5.

The above embodiment can be modified as follows. The lifting tape 37 may be a lifting cord, a lifting cord, or the like. A common motor is used for the slat lifting motor 28 and the slat angle adjusting motor 30, and the driving force of the motor can be selectively supplied to either the slat lifting shaft or the slat angle adjusting shaft via a clutch device. The slat lifting operation and the slat rotating operation may be performed independently. -The slat angle when the slat is pulled up and the slat angle when the slat is lowered may be the same angle.

[0118]

As described above in detail, the present invention can provide an electric blind capable of preventing a trouble due to cutting of a hoisting cable in advance and stably.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a control device for an electric blind.

FIG. 2 is a front view showing an operation panel of a single switch.

FIG. 3 is a block diagram showing an electrical configuration of a single switch and an electric blind.

FIG. 4 is a front view showing a lifting tape winding device.

FIG. 5 is a vertical sectional view showing a lifting tape winding device.

FIG. 6 is a bottom view of a head box showing a dip switch group and a light emitting diode.

FIG. 7 is a flowchart showing the operation of a single switch.

FIG. 8 is a flowchart showing the operation of a single switch.

FIG. 9 is a flowchart showing the operation of a single switch.

FIG. 10 is a flowchart showing the operation of the electric blind.

FIG. 11 is a flowchart showing the operation of the electric blind.

FIG. 12 is a flowchart showing the operation of the electric blind.

FIG. 13 is a perspective view showing a slat lifting operation of the electric blind.

FIG. 14 is a side view showing a slat lowering operation of the electric blind.

FIG. 15 is a side view showing a slat lowering operation of the electric blind.

FIG. 16 is a perspective view showing a slat lifting operation of the electric blind.

[Explanation of symbols]

1 Electric Blind 5 Operating Device (Independent Switch) 22 Motor Control Device (CPU) 28 Motor (Slat Lifting Motor) 30 Motor (Slat Angle Adjusting Motor) 33 Lower Limit Detection Device (Lower Limit Switch) 34 Head Box 37 Lifting Cable ( Lifting tape) 39 Slat 44 Ladder cord 46 Bottom rail

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-3-275889 (JP, A) JP-A-10-30385 (JP, A) JP-A-6-200684 (JP, A) JP-A-4- 93484 (JP, A) JP 5-44378 (JP, A) JP 9-287369 (JP, A) JP 3-13684 (JP, A) (58) Fields investigated (Int. ⁷ , DB name) E06B 9/264 E06B 9/32

Claims (10)

(57) [Claims] 1. From the headbox via a ladder cord
Support the slats and bottom rails with
Insert the hoistway into the slats and
Suspend and support the bottom rail at the end, and use the driving force of the motor.
The slats can be raised and lowered by raising and lowering the lifting rope.
Slats through the ladder code
The angle can be adjusted, and the motor is set by the operating device.
Based on the set values of slat height and slat angle
Electric brine that can be driven by an operating motor controller
Mode, the motor control device performs the lifting operation based on the set value.
Prior to the operation of raising and lowering the slats,
The slats to reduce friction with the
Rotate the slats to the specified angle when raising and lowering the slats, and then
After that, raise and lower the slats to the set value,
Characterized by rotating the slat to the set angle
Electric blind to do. 2. The predetermined angle is ± 60 with respect to the horizontal direction.
The electric bra according to claim 1, wherein the electric bra is within the degree.
India. 3. The predetermined angle is a slat pull-up operation.
The angle of the
3. The electric hood according to claim 2, wherein the angles are close to each other.
Lined. 4. The operating device comprises a plurality of electric blinds.
It is possible to output the set value to the motor control device of
The motor control device for electric blinds is
Rotate the slat to the specified angle when moving up and down the slat
After that, the lifting operation is started all at once based on the set value.
A synchronous elevating device is provided for controlling the movement.
The electric blind according to any one of 3 to 3. 5. The motor control device comprises a slat lifting shaft.
Slat lifting motor that rotates the slat and slat angle
Controls the slat angle adjustment motor that rotationally drives the adjustment shaft.
It is possible to drive the slat lifting shaft based on the set value.
Prior to the
The electric blind according to claim 1, which is used as a characteristic. 6. The predetermined angle is a slat pull-up operation.
The horizontal angle is the angle of the
The angle according to claim 1, wherein the angle is other than the horizontal direction.
The electric blinds listed. 7. From the headbox via a ladder cord
Support the slats and bottom rails with
Insert the hoistway into the slats and
Suspend and support the bottom rail at the end, and use the driving force of the motor.
The slats can be raised and lowered by raising and lowering the lifting rope.
Slats through the ladder code
The angle can be adjusted, and the head box can
A lower limit detection device that outputs a detection signal when slack in the rope is detected
Is installed, and the motor is a sludge set by an operating device.
Model that operates based on the set values for the height and slat angle.
The motor control device can be driven by the motor control device.
Based on the detection signal output from the lower limit detection device
Electric blind odor that can stop the operation of the motor
The motor control device controls the timing of pulling up the slat.
Based on the detection signal of the lower limit detection device
To stop the operation of the motor and
Prior to the slat lifting operation based on a fixed value, the slat rising
Reduces friction between the hoisting rope and the slats during the descending motion.
The slats are raised and lowered in advance to reduce
Rotate to the specified angle during operation, and then slide the slats
Raise and lower to the set value and set the slats to the set value.
An electric blind characterized by rotating to an angle. 8. The lower limit detection device is for suspending the hoisting rope.
The detector is projected to the position, and the detector prevents loosening of the hoisting cable.
Characterized by a limit switch for detection
The electric blind according to claim 7. 9. The motor control device is configured to detect the lower limit.
The detection signal output from the device is invalidated, and
The maintenance mode setting enables the motor to be driven by
9. An apparatus according to claim 7, further comprising a fixing device.
Electric blinds described there. 10. A slat puller is provided on the head box.
Abnormal display based on the detection signal at the time of raising operation
8. A display device for performing the above is provided.
The electric blind according to any one of 9.