JP2006241860A - Blind - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the rotation of slats of an upper slat group and a lower slat group from being obstructed in a blind comprising an upper rudder cord supporting the upper slat group and a lower rudder cord supporting the lower slat group and in which the rudder cords can be tilted separately, and the upper slat group and the lower slat group can be rotated separately. <P>SOLUTION: When an interference determination means determines that, when the lower slat group is rotated, an intermediate rail 22 installed on the lowermost stage slat of the upper slat group 14 or the lower part of the lowermost stage slat is interfered with the uppermost stage slat of the lower slat group 15, a control means rotates the upper slat group 14 to a prescribed angle, and then rotates the lower slat group 15. After the rotation of the lower slat group 15 is completed, the control means controls the upper slat group 14 so as to return it from the prescribed angle position to the original rotating angle position. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention has an upper ladder cord that supports the upper slat group and a lower ladder cord that supports the lower slat group, and each of the ladder cords can be separately tilted, and the upper slat group and the lower slat group It relates to blinds that can be rotated separately.

  Conventionally, what was described in patent document 1 is known as this kind of blind. The blind described in this document divides a plurality of slats into at least two groups in the height direction, and rotates the slat angle adjusting rotation member by a motor, thereby connecting the slats belonging to each group. By moving the member to open and close the slats of each group, and by issuing a command for each group from the command means for rotating or stopping the motor of each group, the slats of each group can be opened and closed individually, or each group By instructing all the slats to operate collectively, all the slats of the blind can be opened and closed simultaneously.

  For this operation, a first group selection switch, a second group selection switch, and an all designation switch are prepared. After any of these switches is turned on, the slat opening / closing switch is turned on. The corresponding motors rotate forward and backward, and the slats rotate clockwise or counterclockwise.When the slat opening / closing switch is turned off, the motor stops rotating and the slats stop opening / closing, and the angle data is Stored in memory.

Japanese Patent No. 2688722

  By the way, when the slat groups that can be individually opened and closed as described above are adjacent, when one slat group rotates, at the boundary part of the slat group, the lowermost slat group of the upper slat group and the lower slat group There is a problem that the uppermost slats interfere and the slats are caught. This problem is especially true when either the lowermost slat of the upper slat group or the uppermost slat of the lower slat group is fully closed, the other is fully closed in the opposite direction, and then one is opposite This can happen if you try to rotate back in the direction.

  Such a problem can be avoided by sufficiently separating the distance between the lowermost slat of the upper slat group and the uppermost slat of the lower slat group so as not to interfere with rotation in the boundary portion of the slat group, Then, even when the slats of all the slat groups are fully closed, a gap is generated at the boundary of the slat groups, and there is a problem that the shielding performance as a blind deteriorates.

  The present invention has been made in view of such a problem, and prevents the slat from being caught at the boundary portion of the slat group without deteriorating the shielding performance, and inhibits the rotation of each slat of the upper slat group and the lower slat group. Its purpose is to provide a blind that never happens.

In order to achieve the above-described object, the invention according to claim 1 includes an upper ladder cord that supports the upper slat group and a lower ladder cord that supports the lower slat group, each ladder cord being In the blind that can be tilted separately and the upper slat group and the lower slat group can be rotated separately,
When one slat group rotates, the prescribed condition is satisfied so that the lower rail of the upper slat group or the lower rail of the lower slat group does not interfere with the upper rail of the lower slat group. In this case, after the other slat group is rotated to a predetermined angle, the one slat group is rotated.

The invention according to claim 2 is the one according to claim 1,
Storage means for storing the current rotation angle of the upper slat group and the lower slat group;
Whether one of the slats rotates, the lower slat of the upper slat group or the middle rail provided at the lower part of the lower slat and the interference condition that may interfere with the upper slat of the lower slat group are satisfied Interference determination means for determining
Control means for rotating one slat group after rotating the other slat group to a predetermined angle when it is determined by the interference determination means that the interference condition is satisfied;
It is characterized by providing.

  According to a third aspect of the present invention, in the first or second aspect, when the rotation operation of one of the slat groups is completed, the other slat group is returned from a predetermined angle to the original rotation angle. .

  According to the present invention, when one slat group is rotated, if a predetermined condition is satisfied, the other slat group is rotated to a predetermined angle and then retracted, and then the one slat group is rotated. Therefore, the lower rail of the upper slat group or the intermediate rail provided at the lower portion of the lower slat and the uppermost slat of the lower slat group can be prevented from interfering with each other, and the mutual catch can be prevented. Therefore, it is not necessary to provide a gap in consideration of catching between the lowermost slat or intermediate rail of the upper slat group and the uppermost slat of the lower slat group, and the shielding property can be improved.

  According to the second aspect of the present invention, when the interference determination means determines whether or not interference occurs, the other slat group can be rotated to a predetermined angle when necessary.

  According to the third aspect of the invention, the other slat group is rotated by a predetermined angle and then returned to the original rotation angle, so that only one desired slat group is finally rotated. be able to.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of a blind according to an embodiment of the present invention.
In the figure, the blind 10 has a head box 12 attached to a fixed part such as a wall surface or a window frame by a bracket.

  The blind 10 has an upper slat group 14 and a lower slat group 15, and a plurality of upper ladder cords 16 and lower ladder cords 17 are suspended from the head box 12, respectively, as shown in FIG. Further, the upper slat group 14 and the intermediate rail 22 below the upper slat group 14 are supported in an aligned state by the middle step 16b of the upper ladder cord 16, and the lower slat group 15 and the lower rail cord 17 by the middle step 17b. A bottom rail 18 below the lower slat group 15 is supported in an aligned state. The intermediate rail 22 is formed by fitting a rail member to the lowermost slat of the upper slat group 14. However, the intermediate rail 22 may not be provided by fitting the rail member. In this case, the slat is the lowermost slat of the upper slat group 14.

  The lower and upper cords 16a and 16a of the upper ladder cord 16 are connected to the intermediate rail 22 when the intermediate rail 22 is provided, and to the lowermost slat when the intermediate rail 22 is not provided. Is introduced into the head box 12 and connected to the first rotating drum 24 in the head box 12. A first shaft 26 extending in the longitudinal direction in the head box 12 passes through each first rotating drum 24. The first shaft 26 is rotationally driven by a first motor 28 disposed in the head box 12, and the rotation is transmitted to the first rotating drum 24. The first shaft 26 is provided with a first encoder 27 that detects the rotation angle of the first shaft 26.

  The lower ladder cord 17 is composed of two front and rear cords 17a, 17a and a middle stage 17b below the intermediate rail 22 corresponding to the lower slat group 15 portion, and corresponds to the upper slat group 14 portion. The portion above the intermediate rail 22 is composed of only two front and rear cords 17a and 17a. In the illustrated example, the front and rear cords 17 a and 17 a of the upper portion of the lower ladder cord 17 pass through insertion holes 14 b formed in each slat of the upper slat group 14. However, the present invention is not limited to this, and it may pass before and after each slat of the upper slat group 14.

  The lower ends of the front and rear cords 17 a and 17 a are connected to the bottom rail 18, and the upper ends thereof are introduced into the head box 12 and connected to the second rotary drum 30 in the head box 12. A second shaft 32 extending in the longitudinal direction through the head box 12 passes through each second rotating drum 30. The second shaft 32 is rotationally driven by a second motor 34 disposed in the head box 12, and the rotation is transmitted to the second rotating drum 30. The second shaft 32 is provided with a second encoder 33 that detects the rotation angle of the second shaft 32.

  A plurality of elevating tapes 20 are suspended from the head box 12, and the lower end of the elevating tape 20 is inserted through insertion holes 14 a and 15 a formed in the slats of the slat groups 14 and 15, and the bottom rail. 18 is connected. The upper end of the lifting / lowering tape 20 is introduced into the head box 12 and is connected to the winding drum 36 so as to be wound and unwound. The winding drum 36 rotates integrally with the second shaft 32.

  The second rotating drum 30 is connected to the second shaft 32 via a clutch spring, and rotates with the second shaft 32 within a predetermined angle range. Is not rotatable relative to the second shaft 32 and always rotates together with the second shaft 32.

  A control board 38 for controlling the raising and lowering of the blinds and the opening and closing of the slats is disposed in the head box 12. FIG. 3 is a block diagram illustrating the configuration of the control board 38 and the operation device 50.

  The control board 38 is composed of a computer and includes a CPU, a ROM, a RAM, etc., and a control circuit 39 that performs data transfer, calculation, temporary data storage, main program storage, and processing according to the program. A memory 40 as a storage means for storing data and programs, and a pulse signal corresponding to the rotation from the first encoder 27 and the second encoder 33 is input to the control circuit 39, A motor drive signal is output from the control circuit 39 to the first motor driver 42 and the second motor driver 44.

  The control circuit 39 further satisfies the interference condition by the interference determination means 39A for determining whether or not the current slat angle state satisfies the interference condition by the program, and the interference determination means 39A. If it is determined, the control unit 39B functions to cause the slat group to perform a specific rotation operation.

  An operation device 50 is connected to the control board 38, and the motor drive signal is output based on a command signal from the operation device 50. As the command signal, an ascending command signal for raising the entire slats 14, 15, a descending command signal for lowering the entire slats 14, 15, a stop command signal for stopping the operation, and rotating the upper slat group 14 in the forward direction. Upper slat group forward rotation command signal, upper slat group reverse rotation command signal for rotating upper slat group 14 in the reverse direction, lower slat group forward rotation command signal for rotating lower slat group 15 in the forward direction, and lower slat group 15 reversed There is a lower slat group reverse rotation command signal that rotates in the direction.

The operation of the blind constructed as described above will be described.
First, when a command signal for rotating any of the slat groups 14, 15 is output from the operating device 50, the control circuit 39 causes the interference determination means 39A to obtain the current upper slat group obtained from the encoders 27, 33. The rotation angles of the slats 14 and the lower slat group 15 are read to determine whether the interference condition is met.

  This interference condition refers to a condition in which when one of the slat groups 14 and 15 is rotated based on a command signal, there is a possibility of interference with the other slat group, and an avoidance operation should be taken. Specifically, this can occur in the cases shown in FIGS. First, as shown in FIG. 4, the lower slat group 15 is rotated from the state where the upper slat group 14 and the lower slat group 15 are horizontal (FIG. 4A) to the fully closed state (FIG. 4 ( b)). Next, the upper slat group 14 is rotated to the fully closed state at an angle opposite to that of the lower slat group 15 (FIG. 4C). Thereafter, when the lower slat group 15 is rotated in the direction opposite to the previous rotation, the uppermost slat of the lower slat group 15 is caught by the lowermost slat or the intermediate rail 20 of the upper slat group 14. Further, as shown in FIG. 5, the upper slat group 14 and the lower slat group 15 are rotated from the horizontal state (FIG. 5A) to the fully closed state (FIG. 5 ( b)). Next, the lower slat group 15 is rotated to a fully closed state at an angle opposite to that of the upper slat group 14 (FIG. 5C). Thereafter, when the upper slat group 14 is rotated in the direction opposite to the previous rotation, the lowermost slat of the upper slat group 14 or the intermediate rail 20 is caught by the uppermost slat of the lower slat group 15.

  In order to avoid the above problems, the interference determination unit 39A first determines whether or not the above-described interference may occur according to whether or not the following conditions are satisfied. Here, for the sake of explanation, the rotation angle in the state where the slat is rotated in the reverse direction to the fully closed state is referred to as “stage 1”, and the rotation angle in the state where the slat is rotated in the forward direction to the fully closed state is referred to as “stage n”. It is assumed that the rotation angle is controlled in a discrete stage whose range is from 1 to n, and that stage is represented by a natural number. The ranges A and B and the value C are defined as follows.

Range A: Stage 1 to n1
Range B: stages n2 to n
Value C: any one of steps n1 + 1 to n2-1
Here, n1 and n2 are natural numbers satisfying 1 ≦ n1 ≦ n2 ≦ n.

(Condition 1)
When the elevation command signal or the rotation command signal for the lower slat group 15 is sent from the operation means 50, the rotation angle of the upper slat group 14 is in the range A and the range B (condition 2)
When the rotation command signal of the upper slat group 14 is sent from the operation means 50, the rotation angle of the lower slat group 15 is in the range A and the range B. When either of the above conditions 1 and 2 is satisfied, The interference determination unit 39A determines that the interference condition is satisfied.

Alternatively, when conditions are more strictly applied, the history of the rotation command signal can be stored in the memory 40, and the following conditions can be determined based on the history.
(Condition 3)
After the rotation angle of the lower slat group 15 is in the range B, there is an upper slat group reverse direction command signal and the rotation angle of the upper slat group 14 is in the range A, and then the lower slat group reverse direction command signal or the elevation command When a signal is sent from the operation means 50 (condition 4)
After the rotation angle of the lower slat group 15 is in the range A, there is an upper slat group forward direction command signal and the rotation angle of the upper slat group 14 is in the range B, and then the lower slat group forward direction command signal or the elevation command When a signal is sent from the operation means 50 (condition 5)
After the rotation angle of the upper slat group 14 is in the range A, there is a lower slat group forward direction command signal and the rotation angle of the lower slat group 15 is in the range B, and then the upper slat group forward direction command signal is operated by the operating means. When sent from 50 (Condition 6)
After the rotation angle of the upper slat group 14 is in the range B, there is a lower slat group reverse direction command signal and the rotation angle of the lower slat group 15 is in the range A, and then the upper slat group reverse direction command signal is the operating means. When it is sent from 50 When any one of the above conditions 3 to 6 is satisfied, the interference determination means 39A determines that the interference condition is satisfied.

  The values of n1, n2, and n are appropriately set according to various conditions such as the vertical distance between the adjacent middle steps 16b and 17b of the upper and lower ladder cords 16 and 17 and the slat width of the slats 14 and 15. A value that can be done. For example, when the range of angles where there is a possibility of interference is large, the value of n1 may be increased and the value of n2 may be decreased. Further, in the above conditions 1 to 6, instead of determining in the ranges A and B, whether the current rotation angle of both slat groups and the rotation angle of the desired slat group interfere as a three-dimensional table is determined. The interference determination unit 39A may determine in advance whether the interference condition is satisfied by referring to the table.

  When the interference determination unit 39A determines that the interference condition is not satisfied when receiving the command signal from the operating device 50, the control unit 39B performs a normal operation.

  That is, when the upper slat group forward rotation command signal or the upper slat group reverse rotation command signal is sent from the operation device 50, the control means 39B drives the first motor 28 via the first motor driver 42. The first shaft 26 is rotated in a direction corresponding to the direction of the command signal. Accordingly, when the first rotating drum 24 rotates, a relative motion is generated between the vertical cords 16a and 16a before and after the upper ladder cord 16, and the upper slat group 14 rotates.

  When a lower slat group forward rotation command signal or a lower slat group reverse rotation command signal is sent from the operating device 50, the control means 39B drives the second motor 34 via the second motor driver 44. The second shaft 32 is rotated in a direction corresponding to the direction of the command signal. Accordingly, when the second rotating drum 30 rotates, a relative motion is generated between the front and rear vertical cords 17a and 17a of the lower ladder cord 17, and the lower slat group 15 rotates.

  Further, when an ascending command signal or a descending command signal is sent from the operating device 50, the control means 39B drives the second motor 34 via the second motor driver 44 to send the command signal to the second shaft 32. Rotate in the direction corresponding to the direction. Accordingly, when the winding drum 36 rotates, the lifting tape 20 is wound around the winding drum 36 or unwound from the winding drum 36, and the slats 14 and 15 are moved up and down from below. When the second rotating drum 30 is rotated to a predetermined angle, further rotation is prevented, and the second rotating drum 30 is idled between the second shaft 32 and the clutch spring.

  On the other hand, when the interference determination unit 39A determines that the interference condition is not satisfied, the control unit 39B performs the following operation according to the condition.

1. When the condition 1, 3 or 4 is satisfied The data of the current rotation angle of the upper slat group 14 obtained from the first encoder 27 is stored in the storage means, and the rotation angle of the upper slat group 14 is a value C. (FIG. 4 (d)), and according to the command signal sent from the operation means 50 (FIG. 4 (e)), thereafter, the stored rotational angle of the upper slat group 14 is restored (FIG. 4). (F)).

2. When the condition 2, 5 or 6 is satisfied The data of the current rotation angle of the lower slat group 15 obtained from the second encoder 33 is stored in the storage means, and the rotation angle of the lower slat group 15 is a value C. (FIG. 5 (d)), and then according to the command signal sent from the operation means 50 (FIG. 5 (e)), then the rotational angle of the lower slat group 15 stored in the storage means is restored. (FIG. 5 (f)).

  4 (d) to (f) or FIGS. 5 (d) to (f), the lowermost slat or intermediate rail 22 of the upper slat group 14 and the lower slat group 14 Interference with the uppermost slat can be avoided, and the slat can be prevented from being caught. Therefore, it is not necessary to provide a clearance in consideration of catching between the lowermost slat or intermediate rail 22 of the upper slat group 14 and the uppermost slat of the lower slat group 14, and the shielding property can be improved.

It is a front view of the blind of this invention. It is sectional drawing seen along the vertical axis | shaft of the blind of FIG. It is a block diagram showing the structure of the control board of FIG. 1, an operation device, etc. It is operation | movement explanatory drawing in the boundary part of an upper slat group and a lower slat group. It is another operation | movement explanatory drawing in the boundary part of an upper slat group and a lower slat group.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Blind 14 Upper slat group 15 Lower slat group 16 Upper ladder code 17 Lower ladder code 22 Intermediate rail 39 Control circuit 39A Interference determination means 39B Control means

Claims (3)

It has an upper ladder cord (16) that supports the upper slat group (14) and a lower ladder cord (17) that supports the lower slat group (15), and each ladder cord can be tilted separately. In the blind where the upper slat group and the lower slat group can be rotated separately,
When one slat group rotates, the lower slat of the upper slat group (14) or the middle rail (22) provided at the lower part of the lower slat does not interfere with the upper slat of the lower slat group (15). As described above, when a predetermined condition is satisfied, the other slat group is rotated to a predetermined angle and then the one slat group is rotated. Storage means for storing current rotation angles of the upper slat group (14) and the lower slat group (15);
When one slat group rotates, the middle rail (22) provided at the lowermost slat of the upper slat group (14) or the lower part of the lower slat may interfere with the uppermost slat of the lower slat group (15) Interference judging means (39A) for judging whether or not a certain interference condition is satisfied,
Control means (39B) for rotating one slat group after rotating the other slat group to a predetermined angle when the interference determination means (39A) determines that the interference condition is satisfied;
The blind according to claim 1, further comprising:   3. The blind according to claim 1, wherein when the rotation operation of one slat group is completed, the other slat group is returned from a predetermined angle to the original rotation angle.

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