JP3908200B2 - Operation device for vertical blind for tilting - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an operation device for a tilting vertical blind used in an inclined window or the like.
[0002]
[Prior art]
As a conventional vertical blind for tilting, a louver is formed from each of a plurality of carriers moving in a head rail by rotation of a screw rod provided in a head rail attached to an upper edge of an inclined window having an inclined upper edge. The louver can be opened and closed and rotated (see, for example, Patent Document 1).
[0003]
In such a tilting vertical blind operating device, a pulley that rotates integrally with the screw rod is provided at the end of the head rail, and an operation cord is hung on the pulley. By rotating the pulley, the screw rod is rotated, whereby the louver can be moved.
[0004]
In other words, the conventional vertical blind operating device has the same mechanism as the horizontal vertical blind operating device in which the head rail is arranged horizontally, not for tilting.
[0005]
[Patent Document 1]
Japanese Utility Model Publication No. 7-40634 (Column 4, lines 15 to 26)
[0006]
[Problems to be solved by the invention]
However, in the vertical blind for tilting where the screw rod is tilted, even when the movement of the louver is stopped, a force that causes the louver to move downward by the weight of the louver works, and this force Since the rod cannot be resisted and may rotate, there is a problem that the louver moves downward as a result. For this reason, there is a problem that the louver may be further lowered from the position to be stopped.
[0007]
This invention is made | formed in view of this subject, The objective is to provide the operating device of the vertical blind for inclination which can maintain the stop position of a louver in the state which does not operate an operation part.
[0008]
[Means for Solving the Problems]
In order to achieve the above-described object, according to the first aspect of the present invention, an inclined screw rod is rotatably supported in a head rail, and each of a plurality of carriers movable in the head rail by rotation of the screw rod is provided. In the tilting vertical blind in which the louver is suspended from, the operating device of the tilting vertical blind that moves the carrier by operating the operation unit,
One-way clutch means for preventing rotation from the screw rod while converting the operation of the operation unit into rotation of the screw rod ,
The one-way clutch means prevents a rotation of the clutch drum in a direction in which the carrier descends, a pulley on which an operation cord constituting an operation portion is hung, a clutch drum that rotates integrally with the pulley and the screw rod, and the carrier descends. A clutch spring that allows rotation of the clutch drum in the direction in which the carrier moves up, and a clutch spring release means that allows the clutch spring to rotate in the direction in which the carrier moves down,
The clutch spring releasing means can be operated by one side of the operation cord, and allows the clutch spring to rotate in the direction in which the carrier descends by operating the operation cord .
[0009]
Since the screw rod is inclined, the carrier moves downward along the screw rod screw due to the louver's own weight, and the screw rod tries to rotate in response to this, but the screw rod is rotated by the one-way clutch means. Is prevented from rotating. As a result, the carrier cannot move and maintains its stop position. Even if the lead angle of the screw rod is large, the carrier stop position can be maintained, so that the distance that the carrier moves with respect to one rotation of the screw rod can be increased. Since the carrier can be moved with a small operation amount, the operability can be improved.
[0011]
In order for the clutch spring to prevent the clutch drum from rotating in the direction in which the carrier descends, even if the carrier is about to descend due to the weight of the louver and the screw rod and clutch drum are to rotate in that direction, the clutch spring will rotate the clutch drum. Is blocked.
[0012]
When the carrier is moved in the direction of raising, the clutch spring rotates the pulley to rotate the screw rod in order to allow the clutch drum to rotate in that direction. When the carrier is moved in the downward direction, the screw rod can be rotated by operating the clutch spring releasing means with the operation cord and allowing the clutch spring to rotate the clutch drum by the clutch spring releasing means.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following embodiments do not limit the present invention.
[0014]
FIG. 1 is an overall view showing a tilting vertical blind to which an operating device of the present invention is applied. In the figure, the vertical blind for tilting has a head rail 10 which is tilted and fixed to a window frame or the like of an inclined window by a bracket, and two axes are provided along the longitudinal direction in the head rail 10. Arranged. One axis is a tilt rod 12, and the other axis is a screw rod 14, which are tilted side by side in the front-rear direction and are rotatably supported in the head rail 10.
[0015]
In the head rail 10, a plurality of carriers 16 are disposed so as to be movable in the longitudinal direction of the head rail through the tilt rod 12 and the screw rod 14, respectively. A louver 20 is suspended from the carrier 16 via a hook 18.
[0016]
Each carrier 16 is inserted into the tilt rod 12 and meshed with the tilt rod 12. As the tilt rod 12 rotates, the rotation is transmitted to the hook 18 via the transmission mechanism inside the carrier 16, and the louver. 20 can rotate about its longitudinal axis.
[0017]
The carrier at the end of the plurality of carriers 16 is a master carrier 16A. In this example, the lowermost carrier 16 is the master carrier 16A. The master carrier 16A is screwed into the screw rod 14 while the screw rod 14 is inserted therein, and the master carrier 16A moves along the screw rod 14 as the screw rod 14 rotates. The carrier 16 other than the master carrier 16A is inserted with the screw rod 14 loosely fitted. The carriers 16 other than the master carrier 16A are sequentially connected by the spacer link 17 with the master carrier 16 as the head, and a predetermined interval determined by the adjacent carrier 16 and the spacer link 17 as a maximum interval. However, lowering of the uppermost carrier 16 is restricted by a stopper 19.
[0018]
An operating device 22 for operating the vertical vertical blind is disposed at the end of the head rail 10. The operation device 22 can be roughly divided into a rotation operation unit and a movement operation unit, and the rotation operation unit is connected so as to rotate integrally with the chilled rod 12 with an operation cord 24 that constitutes the operation unit. A pulley 26 is provided. The moving operation unit includes a pulley 32 on which an operation cord 30 constituting the operation unit is hung, a connection shaft 31 that connects the pulley 32 and the screw rod 14 so as to rotate integrally, and a one-way clutch means 33. Prepare.
[0019]
The one-way clutch means 33 includes a clutch drum 34 that is connected so as to rotate integrally with the pulley 32 and the screw rod 14 by a connecting shaft 31, a clutch drum receiver 35 that supports the clutch drum 34, and a circumferential surface of the clutch drum 34. And a swing ring 38 disposed on the outer peripheral surface of the clutch spring 36, and a swing arm 40 formed integrally with the swing ring 38 and extending below the pulley 32. . As will be described later, the clutch spring 36 prevents the rotation of the clutch drum 34 in the direction in which the carrier 16 descends, and allows the clutch drum 34 to rotate in the direction in which the carrier 16 rises. The swing ring 38 and the swing arm 40 constitute a clutch spring releasing means. The clutch spring releasing means can enlarge the diameter of the clutch spring 36 and allow the clutch drum 34 to rotate.
[0020]
The pulley 26, the pulley 32, the clutch drum 34, the clutch drum receiver 35, the clutch spring 36 and the swing ring 38 are accommodated in a control case 42.
[0021]
The swing ring 38 is formed with a notch 38a at a part of its circumference, and one end 36a of the clutch spring 36 passes through the notch 38a. The other end 36 b of the clutch spring 36 is fixed to the control case 42. The clutch drum 34 and the pulley 32 can be integrally formed.
[0022]
Further, one side 30a of the operation cord 30 hung on the pulley 32 is inserted into a groove formed in the bent piece 40a at the tip of the swing arm 40, and the swinging arm 40 swings from the one side 30a of the operation cord 30. The moving arm 40 can swing.
[0023]
In the operating device 22 configured as described above, the louver 20 is rotated by operating the operation cord 24 and rotating the pulley 26. As the pulley 26 rotates, the tilt rod 12 rotates, and the louver 20 rotates via the transmission mechanism and the hook 18 inside each carrier 16.
[0024]
On the other hand, to move the louver 20, the operation cord 30 is operated to rotate the pulley 32. At this time, in order to move the master carrier 16A in the upward direction, first, the other side 30b of the operation cord 30 is operated to rotate the pulley 32 counterclockwise in FIG. As a result, since the connecting shaft 31 and the clutch drum 34 rotate in the same direction, the clutch spring 36 is expanded in diameter, and the counterclockwise rotation of the pulley 32 is transmitted to the screw rod 14 via the connecting shaft 31. . Then, the master carrier 16A screwed with the screw rod 14 rises and the louver 20 is folded.
[0025]
On the other hand, when one side 30 a of the operation cord 30 is operated, the swing arm 40 swings counterclockwise in FIG. 4, and the notch 38 a of the swing ring 38 integrated with the swing arm 40 is moved to the clutch spring 36. In order to increase the diameter of the clutch spring 36 in contact with one end 36 a of the shaft 32, the clockwise rotation of the pulley 32 is not restricted and is transmitted to the screw rod 14 via the connecting shaft 31. Then, the master carrier 16A screwed with the screw rod 14 descends. The carrier 16 following the master carrier 16 follows the master carrier 16A as it descends, spreads from the upper carrier 16 in order at intervals determined by the spacer links 17, and the louvers 20 are deployed.
[0026]
When the operation cord 30 is not operated, the master carrier 16A must be stopped at that position while maintaining the state of being screwed to the screw rod 14. However, if the lead angle of the screw rod 14 is large, the master carrier 16 </ b> A may descend along the screw groove of the screw rod 14 due to its own weight. In this case, the screw rod 14 rotates, but the screw rod 14 tries to rotate the clutch drum 34 clockwise via the connecting shaft 31 and the clutch spring 36 is fastened, so that the rotation of the clutch drum 34 is prevented. The As a result, since the rotation of the screw rod 14 is prevented, the master carrier 16A cannot move, and thus the stop position of the louver 20 can be maintained.
[0027]
The configuration of the one-way clutch means 33 is not limited to the above-described configuration, and the rotation from the pulley 32 is transmitted to the screw rod 14 in either direction, while the master carrier 16A from the screw rod 14 is lowered. Any configuration can be used as long as it prevents rotation. For example, FIG. 5 shows another configuration example of the one-way clutch means 33, and members denoted by the same reference numerals as those in FIGS. 2 to 4 represent the same members. In the figure, 42a is a fixing ring protruding from the control case 42. In this example, a clutch spring 36 is disposed inside the fixing ring 42a. The clutch spring 36 is normally expanded in diameter and fastened to the fixing ring 42a. Both ends 36a and 36b of the clutch spring 36 are bent in the inner diameter direction. A protrusion 31a is provided on the inner side of both ends 36a and 36b so as to protrude from the connecting shaft 31 in the outer diameter direction. On the outer side of both ends 36a and 36b, the protrusions 34a and 34a of the clutch drum 34 are provided. It is arranged. The protrusion 34a of the clutch drum 34 constitutes a clutch spring releasing means.
[0028]
In such a configuration, rotation from the pulley 32 is allowed to reduce the diameter of the clutch spring 36 by the clutch drum 34 in any direction, and the screw rod is connected via the connecting shaft 31. 14 is transmitted. On the other hand, the rotation from the screw rod 14 is transmitted to the connecting shaft 31 and is blocked in order to increase the diameter of the clutch spring 36. In this way, the same action as in FIGS.
[0029]
Further, the position of the operating device 22 can be either the upper end or the lower end of the head rail 10, and the master carrier 16 </ b> A is not limited to the lowermost side of the carrier 16, but is positioned at the uppermost side. It is also possible to do.
[0030]
This prevents the master carrier 16 </ b> A from moving downward along the screw of the screw rod 14 due to the dead weight of the louver 20 even if the screw rod 14 is inclined or has a large lead angle. Can do. Further, since the lead angle of the screw can be increased, the moving distance of the master carrier 16A with respect to one rotation of the screw rod 14 can be increased. That is, when the louver 20 is moved, the operation code 30 is reduced. Since the louver 20 can be moved by the operation amount, the operability can be improved.
[0031]
【The invention's effect】
As described above, according to the present invention, even if the carrier moves downward along the screw rod screw due to the weight of the louver and the screw rod attempts to rotate accordingly, the screw is rotated by the one-way clutch means. Since the rotation of the rod is prevented, the carrier cannot move as a result, and the stop position can be maintained. Even if the lead angle of the screw rod is large, the carrier stop position can be maintained, so that the moving distance of the carrier with respect to one rotation of the screw rod can be increased, that is, when moving the louver, The louver can be moved with a small operation amount, and the operability can be improved.
[Brief description of the drawings]
FIG. 1 is an overall view of a tilting vertical blind to which an operating device of the present invention is applied.
FIG. 2 is a cross-sectional view showing an embodiment of the operating device of the present invention.
3 is a cross-sectional view taken along line 3-3 in FIG.
4 is a view corresponding to FIG. 3 when one side of the operation code is operated. FIG.
FIG. 5 is a sectional view showing another example of the one-way clutch means of the present invention.
6 is a cross-sectional view taken along line 6-6 in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Head rail 14 Screw rod 16 Carrier 20 Louver 22 Operation apparatus 30 Operation code (operation part)
30a One side 32 Pulley 33 One-way clutch means 34 Clutch drum 34a Protrusion 36 Clutch spring 38 Swing ring 40 Swing arm

Claims (1)

An inclined screw rod (14) is rotatably supported in the head rail (10), and a louver from each of a plurality of carriers (16) movable in the head rail (10) by the rotation of the screw rod (14). In the tilting vertical blind suspended from (20), an operating device for the tilting vertical blind that moves the carrier (16) by operating the operating section (30),
One-way clutch means (33) for preventing the rotation from the screw rod (14) while converting the operation of the operation portion (30) into the rotation of the screw rod (14) ,
The one-way clutch means (33) includes a pulley (32) on which an operation cord (30) that constitutes an operation unit is mounted, and a clutch drum (34) that rotates integrally with the pulley (32) and the screw rod (14). A clutch spring (36) that prevents rotation of the clutch drum (34) in the direction in which the carrier (16) descends, and allows rotation of the clutch drum (34) in the direction in which the carrier (16) rises. Clutch spring release means for allowing the clutch spring (36) to rotate the clutch drum (34) in the direction in which the carrier (16) descends,
The clutch spring releasing means can be operated by one side (30a) of the operation cord (30), and the clutch drum in a direction in which the carrier (16) is lowered to the clutch spring (36) by the operation of the operation cord (30). An operation device for a vertical blind for tilting , which allows the rotation of (34) .

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