JP2577138B2 - Electric blinds for horizontal or inclined windows - 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 mounted on a horizontal or inclined window.

[0002]

2. Description of the Related Art In a conventional horizontal blind, a large number of horizontal slats are vertically supported by a ladder-shaped ladder code hanging from a head box, and a bottom rail is provided below a group of these slats. And an elevating code for raising and lowering the slat is extended downward through each slat and its lower end is connected to the bottom rail.
The upper end of the blade is wound around a rotating drum provided in the head rail, and the blind is opened and closed by winding or unwinding the lifting code on the rotating drum. If such a horizontal blind is to be mounted on a horizontal or inclined window such as a skylight, the entire blind must be held horizontally on the surface of the horizontal or inclined window. Holding the entire blind horizontally or inclined as described above can be achieved by providing a guide for guiding the entire blind.However, since the slats are moved up and down depending on the weight of the slats and the bottom rail, the horizontal or horizontal inclination is maintained. It is extremely difficult to raise and lower a blind that is almost horizontal. Therefore, in a conventional skylight blind, only the rotation of the slats is performed, and the entire blind is not moved up and down, that is, not opened or closed. An elevating rope is stretched in a loop around a lifting drive drum and a pulley, and this lifting rope is moved by rotating the elevating drive drum to raise and lower the slat. No. 58-28157. However, in the structure disclosed in this publication, when installing the blind, the elevating rope must be stretched straight, and since there are not one elevating rope but a plurality of elevating ropes, they are the same. It is very difficult to meet the conditions.

[0003]

SUMMARY OF THE INVENTION The present invention seeks to provide an electric blind which is attached to a horizontal or inclined window such as a skylight and can open and close and rotate a slat as desired. is there. In particular, an object of the present invention is to provide an electric blind in which the entire blind is prevented from loosening in the middle due to the weight of the slats and the bottom rail, and the blind can be opened and closed while the entire blind is always kept in tension. Things. The present invention can be applied not only to a horizontal blind but also to a roll screen for a skylight having exactly the same problems as the horizontal blind for a skylight.

According to the present invention, as a means for solving the above-mentioned problems, in a motor-driven blind mounted on a horizontal or inclined window, a first and a second head box are mounted on a pair of window frames facing each other in the window. In each head box, a first and a second rotating drum driven by a motor are supported, and a bottom rail is arranged between the first and the second head boxes. A blind is provided between a box and a bottom rail, and a blind opening / closing cord attached to one side of the bottom rail is extended through the blind toward a first head box, and the end is connected to a first rotating drum. , And a tension cord attached to the other side of the bottom rail is extended toward the second head box, and the end is extended to the second head box.
And the first and second rotations while holding the bottom rail between the first head box and the second head box with the bottom rail by the blind opening / closing cord and the tension cord. and the drum is rotating,
Unwinding or winding the blind opening / closing cord on the first rotating drum, and winding / unwinding the tensioning cord on the second rotating drum in response to the opening / closing of the blind, and the first head box and the second headbox, characterized in that provided by detecting that the slack blinds open cord or tension cord, the slack eliminating limit switch to stop the code unwinding rotation of the rotary drum which corresponds To provide an electric blind for a horizontal window or an inclined window. In the above electric blind, the rotating drums provided in the first head box and the second head box are rotated by separate motors provided in each head box, and the blinds are opened and closed by the blind opening / closing cord and the tension cord. The blind is opened and closed by the rotation of the first rotating drum while the tension is constantly maintained, thereby preventing the blind opening / closing cord from being loosened due to a slight rotation difference between the two motors, resulting in uneven opening and closing of the slats. . However, when the opening / closing cord and the tension cord are loosened, the corresponding slack eliminating limit switch is activated to stop the rotation of the motor, and once the slack of the loosened lifting cord is eliminated, the limit switch is automatically turned off. When returning, the motor starts rotating again, so that the slats always open and close at a constant speed.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments shown in the drawings will be described below.
FIG. 1 is a schematic view showing a basic configuration of an electric blind for a horizontal window or an inclined window according to the present invention. In the figure, 1 and 2
For example, first and second headboxes 3 and 4 mounted on a pair of opposing window frames in a square or rectangular window, respectively, have a first and a second headbox supported between the first and second headboxes. 1 shows a first and a second rotating drum, the rotating shafts 5, 6 of which are respectively driven by separate motors. FIG. 2 is a front view of an electric blind for a horizontal window or an inclined window embodying the present invention, and FIG. 3 is a side view when applied to an inclined window. FIG.
In FIG. 3 and FIG. 3, the same parts as those shown in FIG. Headboxes 1 and 2 are mounted by brackets 17 and 18, respectively, and rotating drums 3 and 4 are supported by drum receivers 19 and 20, respectively, and motors 21 and 2
2 driven by rotary shafts 5 and 6. A guide wire 23 is provided for guiding the blinds along a horizontal or inclined window, which is held in tension by a wire stretching device 24. In the figure, reference numeral 25 denotes a decorative frame that covers the front surface of the head box. Bottom rail between first and second headboxes 1 and 2
A first head box 1 and a bottom rail
A horizontal blind 8 is provided between the horizontal blind 8. As shown in FIG. 2, the horizontal blind 8 comprises two or more ladder codes 9 supported between the head box 1 and the bottom rail 7 and these ladders, similarly to a conventional blind. The blinds can be opened and closed by moving the bottom rail 7 toward or away from the first head box 1 and comprising a plurality of slats 10 supported by a cord; and As in a conventional blind, the slat can be rotated by operating the ladder code at the position where the slat has moved. Such a mechanism is well-known in a horizontal blind, and a detailed description thereof will be omitted. A blind opening / closing code 11 (corresponding to a lifting / lowering code in a normal horizontal blind) is provided on one side of the bottom rail 7 and is extended toward the first head box 1 so that the first rotating drum is provided. Wrap around. A tensioning cord 12 is attached to the other side of the bottom rail 7, and the tensioning cord 12 is extended toward the second head box and wound around the second rotating drum. The motors 21 and 22 for rotating the first rotary drum 3 and the second rotary drum 4 are respectively
The first rotating drum 3 is configured to rotate in the opposite direction.
When the user winds the blind opening / closing code 11 and opens the blind, the second rotating drum 4 rotates in the opposite direction to loosen the tensioning code 12, and the first rotating drum 3 rotates the blind. When the blind is closed by unwinding the opening / closing code 11, the second rotating drum 4 winds up the tensioning code 11. The bottom rail is pulled toward the second head box to keep the blind 8 in a tight state. First
The head box 1 is provided with an up-limit switch 13, and the second head box 2 is provided with a down-limit switch 14.
Stops the motor at the point of time, thereby continuing the rotation of the motor after the bottom rail has moved to its end position to prevent the blinds from applying excessive force. It has become. When unwinding the blind opening / closing code 11 and the tensioning code 12 described above,
There are provided slack eliminating limit switches 15 and 16 for detecting the slack of the cord and stopping the rotation of the corresponding motor in the cord unwinding direction. The aforementioned limit switches 15 and 16 for eliminating slack are provided in the conventional horizontal blind in such a manner that the bottom rail can be used in the event of any failure of the bottom rail.
When the descent of the descent is hindered, the motor is stopped in the same manner as a failure limit switch generally used to stop the rotation of the motor. When in the state, these codes cause the actuator to be depressed and turned on to continue the rotation of the motor, but when the code becomes loose, the rotation of the corresponding motor is stopped. To eliminate slack. For example, when the second rotating drum 4 is rotated to move the bottom rail 7 toward the second head box in order to close the blinds, the unwinding speed of the first rotating drum 3 is too high. When the blind opening / closing code is loosened, the rotation of the first rotary drum 3 is stopped, and when the code is not loosened, the operation of the limit switch 15 is restored, and the rotation of the first rotary drum 3 is restarted. .

[0006]

As described above, the electric blind according to the present invention, when mounted on a horizontal or inclined window, is kept in a tensioned state without sagging at the center by the weight of the slats or the bottom rail. , Can be opened and closed in this state. However, the rotating drums provided in the two headboxes are rotated by separate motors provided in the respective headboxes, and the lifting / lowering code is generated by a slight rotation deviation of the two motors. To prevent the slats from becoming loose and uneven. However, once the slack of the slackened code is eliminated, the slack eliminating limit switch automatically returns, the motor starts rotating again, and the slats always open and close at a constant speed. The present invention relates to a roll screen.
The same operation and effect can be obtained even when applied to a component.

[Brief description of the drawings]

FIG. 1 shows a basic configuration of an electric blind for a horizontal window or an inclined window according to the present invention.

FIG. 2 is a front view of an electric blind for a horizontal window or an inclined window embodying the present invention.

FIG. 3 is a side view of an electric blind for an inclined window embodying the present invention.

[Explanation of symbols]

 1: First headbox 2: Second headbox 3: First rotating drum 4: Second rotating drum 5: Rotating shaft 6: Rotating shaft 7: Bottom rail 8: Horizontal blind 9: Ladder-co -D 10: Slat 11: Blind opening / closing code 12: Tension code 13: Up limit 14: Down limit 15: Loose limit switch 16: Loose limit switch 17.18: Bracket 19.20 : Drum receiver 21.22: Motor 23: Guide wire 24: Wire stretching device 25: Makeup frame

Claims (1)

(57) [Claims] In an electric blind mounted on a horizontal or inclined window, a first and a second head box are mounted on each of a pair of opposing window frames of the window, and a motor is provided in each of the head boxes. Supporting the first and second rotating drums driven by the first and second head boxes, disposing a bottom rail between the first and second head boxes, and providing a blind between the first head box and the bottom rail; A blind opening / closing cord attached to one side of the bottom rail is extended through the blind toward the first head box, and its end is wound around a first rotating drum, and the other side of the bottom rail is wound. The tension cord attached to the second head box is extended toward the second head box, and its end is wrapped around the second rotating drum. The first and second rotating drums are rotated while the bottom rail is kept in tension between the first head box and the second head box by the tension cord, and the blind opening / closing cord is rotated. Is wound or wound on the first rotating drum, and the tension cord is wound or wound on the second rotating drum accordingly.
Allowed open and close the blind, and the first headbox and a second head box, it is detected that the slack blinds open cord or tension cord, corresponds to <br/> be in code windings of the rotating drum An electric blind for a horizontal window or a sloping window, wherein a limit switch for loosening to stop the unwinding rotation is provided.