JP2755533B2 - Blind lifting cord stopper device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ladder cord suspended from a head box, in which a plurality of slats are horizontally supported upward with a space therebetween and attached to a bottom rail arranged at the bottom of the slat group. The at least two lifting cords are guided up and down through the group of slats and introduced into the head box, guided horizontally near the one end of the head box in the head box, led out of the head box, and vertically led out. It relates to a blind in which a slat group is pulled up by dropping an operating part of a lifting cord by pulling the operating cord downward, and a slat is lowered by its own weight by loosening the lifting cord operating part. In particular, in such a blind, a lifting cord stopper device for stopping the slat at a desired height It relates.

[0002]

2. Description of the Related Art Conventionally, in this type of blind,
Pull the operating part of the lifting cord downward, and when the blind slats reach the desired height, swing the operating part of the lifting cord right or left, touch the upper end of the lifting cord operating part to the stopper, and A structure is generally used in which the stopper is actuated in accordance with the upward movement, and the lifting cord is tightened to stop the movement of the lifting cord, thereby stopping the slat at a desired height. When lowering the slat, swing the operating unit of the lifting cord left or right in the opposite direction to release the stopper, and lower the slat by its own weight. In any case, in conventional blinds,
It is necessary to lock or unlock the lifting cord by swinging the operation part of the lifting cord to the left or right.However, depending on the place where the blind is installed, the lifting cord may be locked by a wall or other obstacle. Or, unlocking may not be performed properly.

[0003]

In the present invention, when raising the blind, the operating part of the lifting cord is lowered, and when the blind reaches a desired height, the operating part of the lifting cord is released to move the blind to a desired position. When the blind is lowered, the operating part of the lifting cord is slightly pulled down to release the engagement of the lifting cord with the stopper, and the blind is freely lowered by the weight of the slat. It is intended to provide a cord stopper device.

[0004]

According to the present invention, as a means for solving the above-mentioned problems, a plurality of slats are horizontally supported at intervals vertically by a ladder cord suspended from a head box. At least two lifting / lowering cords attached to the bottom rail arranged at the bottom of the group of slats are guided up and down through the group of slats and introduced into the head box. To the outside of the head box, and vertically hang down to form the operating part of the lifting cord,
In order to stop the slats at a desired height, in a blind in which the slat group is pulled up by pulling down the lifting / lowering cord operating section and the slat is lowered by its own weight by loosening the lifting / lowering cord operating section,
In the above-mentioned head box, a lifting / lowering cord stopper device configured to lock or release the lifting / lowering cord each time the lifting / lowering cord operating unit is pulled or loosened is provided, and the code stopper device includes: A stopper case through which the lifting cord passes substantially horizontally, a holding member formed on the upper end of the stopper case on a side connected to the bottom rail of the lifting cord, and a stopper member which moves with the lifting cord due to its own weight of the slat. A nipping roller that rolls on the bottom surface of the stopper case and tightens the elevating cord between the end of the stopper case and the nipping member to stop the movement of the elevating cord, and engages with the nipping roller, A switching member for stopping the rolling of the nipping roller in accordance with the movement of the lifting cord due to the weight of the slat. The switching member is disposed so as to be slidable up and down and is elastically pressed against the stopper case by a spring. On the inner surface of the switching member, the shaft of the holding roller is provided with the stopper case. A guide surface is formed in contact with a shaft tip projecting through a guide groove formed in the guide groove. The guide surface is fixed by tightening an elevating cord between the nipping roller and the nipping member to stop the lifting of the slat when the nipping roller is stopped. A first position at which the shaft tip of the shaft abuts, a second position inclined upward from the first position and falling over a step, and a third position inclined upward from the second position and falling over the next step. And a guide path for returning the blind from a third position to a first position over a step is provided.

[0005]

According to the blind lifting / lowering cord stopper device of the present invention, the blind can be raised / lowered only by pulling the operating portion of the lifting / lowering cord up and down. When the lifting code is slightly pulled from the blind lifting state, the stopper is released and the slat descends. In order to shift from the lowered state to the stopped state, pull the loosened up / down cord a little and loosen it again to engage the stopper and stop the lowering of the slat. To raise the slat, pull the lifting cord to release the stopper, pull the lifting cord as it is, raise the slat to an appropriate height, and loosen the lifting cord to engage the stopper and stop lifting the slat. . (Pull a little when descending, keep pulling when ascending)

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments shown in the drawings will be described below.

FIG. 1 shows an embodiment of a blind according to the present invention. In the drawing, reference numeral 1 denotes a head box, and 2 denotes a ladder code suspended from the head box. The upper end of the ladder cord is hung on a rotating drum 4 attached to a rotating shaft 3 arranged in the head box. A plurality of slats 5 are horizontally supported by the ladder cord 2 with a vertical interval. The rotation shaft 3 is rotated from a rotation operation rod 6 via a rotation transmission mechanism 7, and further rotates the slat 5 via the ladder cord 2.

At least two lifting / lowering cords 8 attached to a bottom rail (not shown) arranged at the bottom of the group of slats are guided upward through the group of slats, introduced into the head box 1, and moved to the head box 1. In the box, it is led horizontally to near one end of the head box, goes out of the head box, and hangs vertically to form a lifting cord operating section 9,
A knob 10 is attached to the lower end.

In this blind, the slat group is pulled up by pulling the lifting cord operating section 9 downward, and the slat is lowered by its own weight by loosening the operating cord operating section.

According to the present invention, in order to stop the slat at a desired position, the lifting cord is locked or unlocked in the head box 1 each time the lifting cord operating section 9 is pulled or loosened. The lifting cord stopper device 11 is provided.

The lifting / lowering cord stopper device 11 has a stopper case 12 through which the lifting / lowering cord passes substantially horizontally, and a holding member 13 is formed above the end of the stopper case on the side connected to the bottom rail of the lifting / lowering cord. .

The lifting cord 8 rolls on the bottom surface of the stopper case with the movement of the lifting cord 8 due to the weight of the slat.
Is provided, which locks the roller so that it cannot move any more.

In a preferred embodiment, a knurl is formed on the bottom surface of the case 12, the holding roller 14 is formed as a knurl roller engaging with the knurl, and the bottom surface of the case is inclined upward toward the holding member 13. It is formed as a surface 12a.

Further, a switching member 15 for stopping the rolling of the roller 14 due to the movement of the lifting cord due to the weight of the slat.
Is provided. The switching member 15 is disposed so as to be slidable up and down with respect to the stopper case 12 and is elastically pressed against the stopper case by a spring 17. A guide surface 19 is formed to abut against the tip of the shaft 16 of the holding roller 14 protruding through the guide groove 18 formed in the case, and the guide surface is fixed by tightening the lifting cord 8 between the holding roller and the holding member. A first position V at which the end of the shaft 16 of the nipping roller 14 contacts when stopping the lifting of the slat, a second position W inclined upward from the first position and falling over a step, and a second position. Guideway 20 having a third position X that is inclined upward from above and falls over the next step, and returns from the third position to the first position over the step.
Are formed.

The operation of the apparatus of the present invention will be described below with reference to FIGS. 4 (a), (b), (c) and (d) and FIG.

FIG. 4A shows a state in which the lifting cord 8 is held between the holding member 13 and the holding roller 14, so that the shaft 16 of the holding roller is formed on the switching member 15 when the slat is stopped at a desired position. 7 shows a state of being located at the first position V in the guide surface 19. In this state, the lifting cord 8 is in a stopped state as shown in FIG. Here, when the lifting cord 8 is slightly pulled, the tip of the shaft 16 climbs the upward inclined surface from the first position V, and the second end at the step A.
In this state, the shaft 16 cannot return to the first position. In this state, as shown in FIG. 6B, the nipping roller 14 is kept away from the lifting cord 8, and the stopper is released. Is done. Therefore, the blind slats can be lowered to a desired height. Next, when the lifting cord is pulled again, the tip end of the shaft 16 rises from the second position W, and falls over to the third position X when it crosses the second step B. Here, when the pulling of the lifting code is stopped, the shaft 16 returns through the guide path 20, and when the shaft 16 exceeds the step C, the first position V
, And the lifting code is again stopped. Such a movement is shown in FIG.

When raising the blind, the lifting cord can be pulled to a predetermined length. At this time, the lifting cord is pulled up in the state shown in FIG. 6C without being affected by the stopper device.

[0018]

According to the present invention, the lifting / lowering cord can be locked or unlocked simply by pulling the operating portion of the lifting / lowering cord downward. It is not necessary to swing the robot up and down, and the lifting operation can be easily performed.

Further, since the stopper device is not provided at the place where the lifting cord is led out from the head box, only the opening through which the lifting cord is inserted need be provided, and the opening can be made very small. Also, it has excellent design.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a perspective view of a lifting cord stopper device according to the present invention.

FIG. 3 is an exploded perspective view of the stopper device shown in FIG. 2;

FIGS. 4A to 4C are explanatory diagrams for explaining the operation of the device of the present invention; FIGS.

FIG. 5 is a diagram showing the order of the operation shown in FIG. 4;

6 (a), (b) and (c) are views showing states of the stopper device corresponding to the positions shown in FIG.

[Explanation of symbols]

 1: head box 2: ladder cord 3: rotating shaft 4: rotating drum 5: slat 6: rotating operating rod 7: rotation transmitting mechanism 8: elevating cord 9: operating section 10: knob 11: stopper device 12: case 13: holding Member 14: Nipping roller 15: Switching member 16: Shaft 17: Spring 18: Guide groove

Claims (1)

(57) [Claims] A ladder cord suspended from a head box supports a plurality of slats horizontally at an interval vertically and at least two lifting and lowering members mounted on a bottom rail arranged at a lowermost portion of the slat group. A cord is guided upward through the group of slats and introduced into the head box, is guided horizontally in the head box to near one end of the head box, is led out of the head box, and vertically hangs to raise and lower the cord. In a blind in which an operating portion is formed, the slat group is pulled up by pulling the lifting / lowering cord operating portion downward, and the slat is lowered by its own weight by loosening the lifting / lowering cord operating portion. Each time the lifting / lowering cord operating section is pulled or loosened, the lifting / lowering cord is inserted into the head box. A lifting / lowering cord stopper device configured to lock or release the locking, the code stopper device includes a stopper case through which the lifting / lowering cord passes substantially horizontally, and a side connected to the bottom rail of the lifting / lowering cord. Between the holding member formed on the upper end of the stopper case and the bottom surface of the stopper case with the movement of the lifting cord due to the weight of the slat, and between the holding member at the end of the stopper case. A holding member that tightens the lifting cord to stop the movement of the lifting cord, and a switching member that engages with the holding roller and stops rolling of the holding roller accompanying the movement of the lifting cord due to the weight of the slat. The switching member is disposed so as to be slidable up and down with respect to the stopper case, and is provided with a spring with respect to the stopper case. A guide surface is formed on the inner surface of the switching member so that the shaft of the pinching roller abuts on a shaft tip protruding through a guide groove formed in the stopper case, The guide surface has a first position where the shaft end of the holding roller comes into contact when the lifting cord is tightened and fixed between the holding roller and the holding member to stop lifting and lowering the slat, and the guide surface is inclined upward from the first position. A guide path having a second position that falls over the step and a third position that is inclined upward from the second position and falls over the next step, and returns from the third position to the first position over the step; A blind lifting / lowering cord stopper device, characterized in that: