JP6998130B2 - Delay units, cord supports, and horizontal blinds - Google Patents

Description

The present invention relates to a delay unit of a cord support member that enables an operation of raising / lowering / tilting a slats with one drive shaft, a cord support device thereof, and a horizontal blind provided with these.

The horizontal blind can adjust the amount of solar radiation taken into the room by raising and lowering and tilting the multi-stage slats supported by the ladder cord suspended from the head box using the elevating cord. ..

For example, a bottom rail is arranged at the lower end of the ladder cord, and the elevating cord attached to the bottom rail is pulled into the head box and pulled out from the head box to raise and lower the bottom rail in multiple stages. The slats can be raised and lowered.

By the way, as one type of horizontal blind, a tilt drum that suspends and supports the ladder cord with one drive shaft and a cord that can operate the rotation of the winding shaft that suspends and supports the elevating cord so that it can be wound or rewound. Those using a support member are generally known.

In a general cord support member that enables the rotation of the tilt drum and the take-up shaft to be operated by such a single drive shaft, even if a tilt operation without raising and lowering the slats is desired, the bottom rail is raised and lowered by the tilt operation. Resulting in. In particular, when the bottom rail is not in the lower limit position, the slat convolution portion rises during the tilt operation and then tilts, which causes a problem to be improved from the viewpoint of operability.

Therefore, a technique is disclosed in which the tilt drum and the take-up shaft are engaged with each other by providing a play at each protrusion with respect to the cord support member, and the rotation of the take-up shaft is delayed with respect to the rotation of the tilt drum (for example). See Patent Document 1).

More specifically, in the cord support member (mechanism housing box) in the technique of Patent Document 1, the tilt drum (rotation drum) is directly connected so as to rotate with the rotation of the drive shaft, and a shaft member (bush) is newly provided. Fix to the cord support member. A braking drum and a clutch ring are provided at one end of this shaft member, and are arranged between the tilt drum and the take-up shaft (elevating drum). The take-up shaft is idlely engaged with the peripheral edge of the tubular portion of the shaft member protruding from the braking drum, and is engaged with the tilt drum at each protrusion so as to rotate together with a play of 180 degrees. .. Therefore, since the take-up shaft is not directly connected to the drive shaft, a certain amount of play is provided in the rotation of the take-up shaft with respect to the rotation of the tilt drum so that the rotation of the take-up shaft can be delayed. There is.

As one form of the cord support device, the ladder cord is suspended by hanging the upper end of the ladder cord in an annular shape and hanging it on the tilt drum, and the slats supported by the weft of the ladder cord are rotated by the rotation of the tilt drum. There is something to move. In the form of this cord support device, in order to transmit the rotation of the tilt drum to the movement of the ladder cord, it is necessary to generate a predetermined frictional resistance between the tilt drum and the upper end portion of the annular shape of the ladder cord. Therefore, a technique of providing a friction member at a part of the upper end portion of the annular shape of the ladder cord is known (see, for example, Patent Document 2).

Japanese Unexamined Patent Publication No. 3-161685 Jikkensho 39-12438 Gazette

As described above, in a general cord support member that enables the rotation of the tilt drum and the take-up shaft to be operated by one drive shaft, even if a tilt operation without raising and lowering the slats is desired, the tilt operation causes the bottom rail. If the bottom rail is not in the lower limit position, the slat convoluted portion rises and then tilts during the tilt operation, which causes a problem in terms of operability.

On the other hand, the technique of Patent Document 1 can solve the problem, but the technique of Patent Document 1 delays the rotation of the take-up shaft with respect to the rotation of the tilt drum, so that the tilt drum and the take-up shaft are delayed. And are configured to be engaged with each other by providing play at each protrusion. For this reason, when installing a plurality of cord support members in the headbox, the tilt drum and winding are used to align the cord support members with respect to one drive shaft (adjustment of slat angle, cord length adjustment, etc.). It is expected that it will be necessary to reassemble the cord support member many times while adjusting the relative positional relationship of the shafts each time, and there is concern about the ease of assembly to the headbox.

Further, in the technique of Patent Document 1, since the winding shaft is configured to be idlingly engaged with the peripheral edge of the tubular portion of the shaft member, it is difficult to reduce the size, and the diameter of the entire cord support member becomes large. As a result, there is concern about an increase in the cost of the cord support member or the horizontal blind.

Further, in the technique of Patent Document 1, only the configuration of 180 degrees as the delay angle is disclosed, but if it is applied to applications other than 180 degrees, at least the tilt drum, the take-up shaft, and the clutch ring are disclosed. It is necessary to change the shape, and it is necessary to prepare a cord support member with a changed shape of the tilt drum, the take-up shaft, and the clutch ring for each use of the horizontal blind, resulting in an increase in cost.

Further, in the technique of Patent Document 1, the entire cord support member is replaced when the delay angle is to be adjusted or changed at the time of assembly. Therefore, there is a concern that the burden of parts management will increase.

Therefore, there is a problem that the tilt drum of the slats and the take-up shaft can be rotated by one drive shaft, and when a tilt operation without raising and lowering the slats is desired, the bottom rail moves up and down by the tilt operation. In addition, when the bottom rail is not in the lower limit position, it solves the problem that the slat convolution part rises and then tilts during tilt operation, and also improves assembling, miniaturization, versatility, and reduction of parts management burden. , And a technique with excellent practicality that contributes to cost reduction is desired.

In addition, in the form of a cord support device in which the upper end of the ladder cord is looped and hung on the tilt drum to suspend the ladder cord, and the slats supported by the weft of the ladder cord are rotated by the rotation of the tilt drum. Among them, in the technique of providing the friction member with respect to the rudder cord as in Patent Document 2, since the contact / non-contact state of the friction member changes due to the rotation of the tilt drum, the friction member and the tilt due to the swing of the ladder cord or the like. It is assumed that the contact with the drum becomes insufficient and the slats rotate poorly.

In view of the above-mentioned problems, an object of the present invention is a delay unit of a cord support member capable of raising / lowering / tilting a slats with one drive shaft, a cord support device thereof, and a cord support device thereof in a practical manner. The purpose is to provide a horizontal blind equipped with these.

Another object of the present invention is to provide a horizontal blind to which the frictional resistance related to the hanging is adapted to the cord support device including the tilt drum configured to hang the upper end of the ring of the ladder cord. be.

The delay unit of the present invention is a delay unit of a cord support device capable of raising and lowering and tilting a slats by one drive shaft, and has a tilt drum and a take-up shaft centered on one drive shaft. It is installed on the outside or inside of the support case that rotatably supports each, and the take-up shaft is configured to rotate in conjunction with the rotation of the tilt drum with a predetermined delay amount, and is directly connected to the drive shaft. An output shaft that has an input shaft member and a shaft portion that transmits rotation so that the rotation of the input shaft member is interlocked and rotated with a predetermined delay amount, and engages with the input shaft member with a play of a predetermined rotation angle. A member, a braking member that suppresses rotation of the output shaft member other than rotation due to rotation transmission from the input shaft member, and a case member that accommodates the input shaft member, the output shaft member, and the braking member. It is characterized by being prepared.

Further, the cord support device of the present invention is characterized by including the delay unit.

Further, the cord support device of the present invention is a cord support device that enables the operation of raising and lowering and tilting the slats by one drive shaft, and the tilt is directly connected to the drive shaft with one drive shaft as the center of the rotation shaft. It is characterized by including a drum, a take-up shaft that is not directly connected to the drive shaft, and the delay unit.

Further, in the cord support device of the present invention, the delay unit is configured to associate a rotation transmission portion that causes the predetermined delay amount in the axial direction of the drive shaft.

Further, in the cord support device of the present invention, the delay unit is configured to associate a rotation transmission portion that causes the predetermined delay amount in the direction perpendicular to the drive shaft.

Further, in the cord support device of the present invention, the braking member is a coil having a pair of ends that engage with a part of the output shaft member while allowing rotation transmission from the input shaft member to the output shaft member. It is characterized by comprising a brake spring having a shape, and a spring case for accommodating the brake spring with a reduced diameter and locking the brake spring to a case member of the delay unit.

Further, in the cord support device of the present invention, a rotary relay plate that rotationally relays rotation with a predetermined delay amount is further provided between the input shaft member and the output shaft member, and the input shaft member and the output shaft member are provided with each other. It is characterized in that the delay amount due to engagement can be changed.

Further, in the cord support device of the present invention, the case member of the delay unit is characterized in that a plurality of members are fitted and formed in a direction perpendicular to the drive shaft.

Further, in the cord support device of the present invention, the delay unit is arranged so as to be connected to the bearing portion of the take-up shaft via an obstacle detection stop device.

Further, the cord support device of the present invention is characterized in that the rotation amount that causes a delay amount by the delay unit is set to be equal to or larger than the angle adjustment range of the slats.

Further, in the cord support device of the present invention, the case member of the delay unit has a claw portion for gripping the support case of the cord support device or the support auxiliary member of the take-up shaft. ..

Further, in the cord support device of the present invention, the shaft portion of the output shaft member of the delay unit has a locking means for directly or indirectly connecting to the bearing portion of the take-up shaft. ..

Further, the horizontal blind of the present invention is characterized by comprising the cord support device of the present invention.

Further, the horizontal blind of the present invention enables the slats to be raised and lowered by winding or rewinding the lifting cord by a plurality of winding shafts constituting the cord winding device based on the rotation of one drive shaft. A horizontal blind that suspends a rudder cord from the tilt drum of the above and rotates it based on the rotation of the drive shaft to adjust the angle of the slats supported by the rudder cord. When the slats are inverted after the slats are lifted and lowered, the delay unit transmits the rotation of the drive shaft to the tilt drum and prevents the rotation of the take-up shaft during the angle adjustment of the slats, so that the drive shaft and the winding are wound. Braking means including the braking member and the case member, which are configured so that the shaft and the shaft rotate in conjunction with each other after a predetermined relative rotation and are non-rotatably supported by the head box accommodating the cord winding device and the tilt drum. Is provided separately from the cord winding device, and is characterized in that it is configured to prevent the rotation of the winding shaft during the angle adjustment of the slats.

Further, the horizontal blind of the present invention enables the slats to be raised and lowered by winding or rewinding the lifting cord by a plurality of winding shafts constituting the cord winding device based on the rotation of one drive shaft. A horizontal blind that suspends a ladder cord from the tilt drum of the above and rotates it based on the rotation of the drive shaft to adjust the angle of the slats supported by the ladder cord, and is provided with a plurality of delay units. Each of the plurality of delay units is installed on each of the plurality of take-up shafts so that the take-up shaft rotates in conjunction with the rotation of the tilt drum by a predetermined delay amount, and the take-up shaft and the tilt are provided. The upper surface of the head box for accommodating the drum is opened in the front-rear direction with a first length, and the inside of the head box has a second length accommodating space larger than the first length, and the plurality. Each of the delay units of the above is inserted from the upper surface of the headbox opened at the first length at the time of assembly to the headbox, and is inserted into the plurality of winding shafts to be connected on the drive shaft. It is characterized by having a shape in which deviations in the front-rear direction and the up-down direction with respect to the headbox are suppressed in the accommodation space of the second length in the headbox when rotated so as to face each other in the direction in which they are arranged side by side. And.

Further, the horizontal blind of the present invention enables the slats to be raised and lowered by winding or rewinding the lifting cord by a plurality of winding shafts constituting the cord winding device based on the rotation of one drive shaft. A horizontal blind that suspends a ladder cord from the tilt drum of the above and rotates it based on the rotation of the drive shaft to adjust the angle of the slats supported by the ladder cord, and is provided with a plurality of delay units. Each of the plurality of delay units is installed on each of the plurality of take-up shafts so that the take-up shaft rotates in conjunction with the rotation of the tilt drum by a predetermined delay amount, and the take-up shaft and the tilt are provided. The upper surface of the headbox accommodating the drum is opened in the front-rear direction with a first length, and the inside of the headbox has a accommodation space having a second length larger than the first length, and the plurality. Each of the delay units of the above is inserted from the upper surface of the headbox opened at the first length at the time of assembly to the headbox, and faces each other in a direction to be installed on the plurality of winding shafts to be connected. It is characterized by having a shape in which deviations in the front-rear direction and the up-down direction with respect to the headbox are suppressed in the accommodation space of the second length in the headbox when rotated so as to do so.

Further, the horizontal blind of the present invention enables the slats to be raised and lowered by winding or rewinding the lifting cord by a plurality of winding shafts constituting the cord winding device based on the rotation of one drive shaft. A horizontal blind that suspends a ladder cord from the tilt drum of the above and rotates it based on the rotation of the drive shaft to adjust the angle of the slats supported by the ladder cord, and is provided with a plurality of delay units. Each of the plurality of delay units is installed on each of the plurality of take-up shafts so that the take-up shaft rotates in conjunction with the rotation of the tilt drum by a predetermined delay amount, and each of the plurality of delay units. Is randomly inserted into the center of the plurality of delay units, the plurality of winding shafts, and the plurality of tilt drums when the drive shaft is assembled to the head box accommodating the take-up shaft and the tilt drum. After that, by randomly rotating the drive shaft by a predetermined number of rotations or more, each of the plurality of delay units can be initialized, and the alignment regarding the attachment position of the elevating cord on all the take-up shafts becomes possible. It is characterized in that it is separated from the plurality of winding shafts, and after the alignment, the delay units are connected and installed by sliding in the left-right direction in the headbox.

Further, another aspect of the horizontal blind according to the present invention is a horizontal blind that allows the slats to be rotated by following the rudder cord by rotating the tilt drum, and supports the cord according to any one of claims 3 to 12. The tilt drum provided with the device and the cord support device forms a plurality of annular upper ends for a pair of indoor and outdoor ladder cords, and a predetermined frictional force is applied to the outer peripheral surface formed on the tilt drum. It is characterized in that it is configured to be hung by holding.

Further, in another aspect of the horizontal blind according to the present invention, the upper end of the ladder cord hanging on the indoor side is engaged with the ladder cord hanging on the outdoor side after being hung on the outer peripheral surface of the tilt drum from the indoor side. The upper end of the ladder cord hanging from the outdoor side is hooked on the outer peripheral surface of the tilt drum from the outdoor side, and then is locked to the ladder cord hanging from the indoor side.

Further, in another aspect of the horizontal blind according to the present invention, the upper end of the ladder cord hanging from the indoor side is locked to the ladder cord hanging from the indoor side to the outer peripheral surface of the tilt drum. The upper end of the ladder cord hanging from the outdoor side is hung from the outdoor side on the outer peripheral surface of the tilt drum, and then distributed along the uppermost weft thread provided between the pair of ladder cords to form a chamber. It is characterized by being locked to a ladder cord that hangs outward.

Further, in another aspect of the horizontal blind according to the present invention, the upper end of the ladder cord hanging down to the indoor side is the pair of ladder cords after the first hooking is performed from the indoor side to the outer peripheral surface of the tilt drum. It is distributed along the uppermost weft thread provided between them, and the outer peripheral surface is again hung for the second time, and then the ladder is locked to the ladder cord hanging on the outdoor side and hangs on the outdoor side. The upper end of the cord is characterized in that it is locked to the cord portion when the ladder cord hanging down to the indoor side is first hooked.

Further, in another aspect of the horizontal blind according to the present invention, the locking portions at the upper ends of the pair of ladder cords on the indoor side and the outdoor side are provided on the outdoor side.

According to the present invention, it is possible to operate the rotation of the tilt drum and the take-up shaft with one drive shaft, and when a tilt operation without raising and lowering the slats is desired, the bottom rail moves up and down by the tilt operation. In particular, when the bottom rail is not in the lower limit position, the problem that the slat convolution part rises and then tilts during tilt operation is solved, the assembling property is improved, and the size is reduced. It is excellent in versatility, reduction of parts management burden, and practicality that contributes to cost reduction.

According to the present invention, with respect to a cord support device provided with a tilt drum configured to hang the upper end of an annular shape of a ladder cord, the frictional resistance related to the hang can be changed or adjusted for a wide variety of horizontal blinds. Become.

It is a front view which shows the schematic structure of the horizontal blind of one Embodiment by this invention. (A) and (b) are perspective views and sectional views showing a schematic configuration of a cord support device having a delay unit according to the first embodiment of the present invention, respectively. It is an exploded perspective view which shows the schematic structure of the delay unit of Example 1 by this invention. It is a perspective view explaining the method of assembling the cord support device which has the delay unit of Example 1 by this invention. (A), (b), and (c) are diagrams for explaining the operation of the delay unit according to the first embodiment of the present invention, respectively. (A), (b), and (c) are schematic side views illustrating the operation of the horizontal blind with respect to the delay unit of the first embodiment according to the present invention, respectively. (A) and (b) are perspective views and cross-sectional views showing a schematic configuration of a cord support device having a delay unit according to a second embodiment of the present invention, respectively. It is an exploded perspective view which shows the schematic structure of the delay unit of Example 2 by this invention. It is a perspective view explaining the method of assembling the cord support device which has the delay unit of Example 2 by this invention. (A) and (b) are perspective views and cross-sectional views showing a schematic configuration of a cord support device of another example having the delay unit of the second embodiment according to the present invention, respectively. It is a perspective view explaining the method of assembling the cord support device of another example which has the delay unit of Example 2 by this invention. It is an exploded perspective view which shows the schematic structure of the delay unit of Example 3 by this invention. It is an exploded perspective view which shows the schematic structure of the delay unit of Example 4 by this invention. (A) and (b) are diagrams for explaining the operation of the delay unit of the third embodiment according to the present invention, and (c) is a diagram for explaining the operation of the delay unit of the fourth embodiment according to the present invention. It is a top view which shows the structure which concerns on the assembly in the headbox about the delay unit of one Example by this invention. (A) and (b) are top views illustrating the method of assembling the delay unit according to the present invention in the head box, respectively. (A), (b), and (c) are top views illustrating an assembly method in a headbox for a plurality of delay units according to an embodiment of the present invention, respectively. (A) and (b) are perspective views which show the example of the connection structure with respect to the obstacle detection stop device in the cord support device about the delay unit of one Embodiment by this invention, respectively. It is an exploded perspective view which shows the schematic structure of the delay unit of Example 5 by this invention. It is a perspective view explaining the method of assembling the cord support device of the modification which has the delay unit of Example 5 by this invention. It is a perspective view which shows the schematic structure of the cord support device of the modification which has the delay unit of Example 5 by this invention. It is a perspective view which shows the schematic structure of the cord support device about the delay unit of Example 6 by this invention. It is a front view which shows the schematic structure of the horizontal blind of one Embodiment which comprises the cord support device which suspends the ladder cord which has the upper end part of an annular shape by this invention. (A) and (b) are a partial front view and side view around a cord support device for suspending a ladder cord having an annular upper end having one annular upper end, respectively, based on the conventional technique. .. (A) and (b) are a partial side view around the cord support device of Example 1 according to the present invention, and a schematic diagram of the cord distribution thereof. (A) and (b) are a partial side view around the cord support device of Example 2 according to the present invention, and a schematic diagram of the cord distribution thereof. (A) and (b) are a partial side view around the cord support device of Example 3 according to the present invention, and a schematic diagram of the cord distribution thereof. (A) and (b) are a partial side view around the cord support device of Example 4 according to the present invention, and a schematic diagram of the cord distribution thereof.

Hereinafter, with reference to the drawings, a horizontal blind that enables an elevating operation of the slat by the elevating cord and a tilting operation of the slat by the ladder cord by rotating one drive shaft will be described as an example. In the specification of the present application, with respect to the front view of the horizontal blind shown in FIG. 1, the upper side and the lower side in the drawing are upward (or upper) and lower (or lower) according to the hanging direction of the slats, respectively. The left direction in the figure is defined as the left side of the horizontal blind, and the right direction in the figure is defined as the right side of the horizontal blind. Further, when the side where the front view of FIG. 1 is visually recognized is the front side (indoor side) and the opposite side is the rear side (or the outdoor side) and is referred to as the front-rear direction of the horizontal blind, it is shown in the front view of FIG. The direction perpendicular to the surface.

(Structure of horizontal blinds)
FIG. 1 is a front view showing a schematic configuration of a horizontal blind according to an embodiment of the present invention. In the horizontal blind shown in FIG. 1, a cord support device 5 configured by arranging a delay unit 5a according to the present invention in parallel with a cord support unit 5b is provided in the head box 1, and a ladder is provided on the right end side in the head box 1. A cord support member 6 is arranged. In the illustrated example, only one cord support device 5 and one ladder cord support member 6 are shown, but two or more cord support devices 5 and a ladder cord support member 6 can be provided in the head box 1, respectively. ..

The cord support unit 5b and the ladder cord support member 6 suspend and support a plurality of stages of slats 4 via a pair of string-shaped ladder cords 9 hanging on the indoor side and the outdoor side, respectively, and each ladder cord 9 is supported. The bottom rail 8 is suspended and supported at the lower end of the. The head box 1 is fixed to the mounting surface on the ceiling side via the bracket 7.

Further, a string-shaped elevating cord 10 is hung from the cord support unit 5b at a substantially central portion in the front-rear direction on the lower surface of the head box 1, and a lower end of the elevating cord 10 is provided at a substantially central portion in the front-rear direction of each slat 4. It is attached to the bottom rail 8 through an insertion hole (not shown).

Therefore, the cord support unit 5b can wind or rewind the tilt drum 51 having a V-shaped groove for hanging a pair of ladder cords 9 hanging on the indoor side and the outdoor side, respectively, and the elevating cord 10. A long cylindrical winding shaft 52 having an inclination is arranged side by side on a square rod-shaped drive shaft 11 to support the support case 50.

In this example, the obstacle detection / stopping device 53 is provided on the tip end side of the take-up shaft 52. The obstacle detection / stopping device 53 is a device for blocking the rotation of the take-up shaft 52 that supports the elevating cord 10 when the tension in the pulling direction does not act on the elevating cord 10, and is a device for preventing the bottom rail while the slats 4 are descending. When the 8 collides with an obstacle, it has a function of stopping the unwinding of the elevating cord 10 to stop the descent of the slats 4 and the bottom rail 8 and preventing the reverse winding of the elevating cord 10.

In particular, although the details will be described later, in the cord support device 5 having the delay unit 5a of the first embodiment, the tilt drum 51 is non-rotatably connected to the drive shaft 11, whereas the take-up shaft 52 is connected to the drive shaft. A cord support unit 5b supported by the support case 50 as non-connected (non-engaged) with respect to 11 is configured, and the take-up shaft 52 operates so as to rotate in conjunction with the rotation of the tilt drum 51 by a predetermined delay amount. The delay unit 5a to be caused is arranged side by side on the drive shaft 11 with respect to the cord support unit 5b.

The ladder cord support member 6 is simply a device for supporting a tilt drum 51a having a V-shaped groove for hanging a pair of ladder cords 9 hanging on the indoor side and the outdoor side, respectively.

An operation unit 2 is provided on the right end side of the head box 1. The operation unit 2 has a pulley (not shown) on which an endless string-shaped operation code 3 (or an endless ball chain may be used) can be hooked if it is a manual type shown in the figure, and is outside the head box 1. The operation code 3 is derived toward the direction, and the drive shaft 11 can be rotated.

Alternatively, when the operation unit 2 is electric, it can be an electric motor that can rotate the drive shaft 11 based on an operation signal from the outside. Therefore, the form of the operation unit 2 can be any form as long as it can transmit to the rotation of the drive shaft 11 according to the operation by the operator.

Therefore, in the horizontal blind shown in FIG. 1, the operation code 3 is operated to rotate the drive shaft 11, and the tilt drum 51 in the cord support device 5 and the tilt in the ladder code support member 6 are tilted with the rotation of the drive shaft 11. By rotating the drum 51a, a tilt operation for adjusting the angle of the slats 4 is possible. When the drive shaft 11 is rotated more than the rotation required for the tilt operation, the take-up shaft 52 in the cord support device 5 is delayed from the rotation of the tilt drum 51 during the tilt operation by the action of the delay unit 5a. The slats 4 can be raised or lowered by rotating in conjunction with each other.

Hereinafter, the structure and operation of the delay unit 5a and the cord support device 5 of each embodiment will be described in more detail.

(Example 1)
2 (a) and 2 (b) are perspective views and cross-sectional views showing a schematic configuration of a cord support device 5 having a delay unit 5a according to the first embodiment of the present invention, respectively. FIG. 3 is an exploded perspective view showing a schematic configuration of the delay unit 5a according to the first embodiment of the present invention. Further, FIG. 4 is a perspective view illustrating a method of assembling the cord support device 5 having the delay unit 5a according to the first embodiment of the present invention.

The cord support device 5 shown in FIG. 2 (a) is configured by arranging a delay unit 5a in parallel with the cord support unit 5b. The cord support unit 5b rotatably supports the tilt drum 51 and the take-up shaft 52 with the drive shaft 11 as a rotation shaft by the support case 50. The ladder cord 9 (see FIG. 1) to be hung from the tilt drum 51 and the elevating cord 10 (see FIG. 1) to be hung from the take-up shaft 52 are provided on the bottom surface of the support case 50. It is derived from the outlet 50a.

As shown in FIG. 2B, the tilt drum 51 is non-rotatably connected to the drive shaft 11 and is supported by the support case 50. On the other hand, the take-up shaft 52 is supported by the support case 50 as non-connected (non-engaged) with respect to the drive shaft 11. Further, an obstacle detection / stopping device 53 is provided on the tip end side of the take-up shaft 52 to prevent the take-up shaft 52 supporting the elevating cord 10 from rotating when tension in the pull-out direction does not act on the elevating cord 10. However, this obstacle detection / stopping device 53 is also supported by the support case 50 as a non-connection (non-engagement) with respect to the drive shaft 11. The case body of the obstacle detection / stopping device 53 is fixed to the tip end side of the take-up shaft 52, but the tubular camshaft 531 housed in the case body of the obstacle detection / stopping device 53 is being lowered by the slats 4. When the bottom rail 8 collides with an obstacle, the necessary play (that is, the amount of rotation that prevents the rotation of the take-up shaft 52) is provided so as to stop the rewinding of the elevating cord 10 and stop the descent of the slat 4 and the bottom rail 8. Therefore, it can rotate integrally with the rotation of the take-up shaft 52.

As shown in FIG. 3, the delay unit 5a juxtaposed with the support case 50 of the cord support unit 5b includes an output shaft member 56, a brake spring 57, a spring case 58, a rotation relay plate 59, and an input shaft member. It is composed of 60 and case members 55a and 55b.

The output shaft member 56 projects through an outer hexagonal cylindrical shaft portion 561 and a flange 567 on which a cylindrical shaft portion 568 is formed on the base end side (drive transmission input side) of the shaft portion 561. It has a substantially cylindrical cylindrical shaft 562, and a protrusion 564 projecting from the center of the cylindrical shaft 562 to the drive transmission input side within a predetermined angle (angle α1 described later) is provided on the outer periphery of a part of the cylindrical shaft 562. ing. The shaft portion 568 and the flange 567 of the output shaft member 56 are relatively rotatablely supported by the circular opening 559c and the opening side surface 559a on one side surface (drive transmission output side) of the case members 55a and 55b, respectively. In this example, the cylindrical shaft 562 and the protrusion 564 are formed so as to protrude in a continuous shape, but the cylindrical shaft 562 and the protrusion 564 may be formed so as to protrude individually. A recessed region on the outer periphery of the cylindrical shaft 562 excluding the protrusion 564 is formed as an engagement receiving portion 563 that is a range of motion of the protrusion 592 of the rotation relay plate 59 described later. The shaft portion 561 and the cylindrical shaft 562 are formed with a shaft hole 565 through which the drive shaft 11 can be inserted without engagement. The outer hexagonal tubular shaft portion 561 is rotatable and rotatable integrally with the tubular camshaft 531 having the hexagonal shaft hole 531a of the obstacle detection / stopping device 53 (FIG. 4). (See), the rotation of the output shaft member 56 can be transmitted so as to rotate in synchronization with the camshaft 531 of the obstacle detection / stopping device 53 (see FIG. 2B).

The brake spring 57 and the spring case 58 function as braking members that suppress rotation of the output shaft member 56 other than rotation due to rotation transmission from the input shaft member 60. More specifically, a predetermined braking force is operated with respect to the rotation of the output shaft member 56 transmitted from the cam shaft 531 of the obstacle detection / stopping device 53. That is, the braking member including the brake spring 57 and the spring case 58 functions as a stopper device that locks the rotation of the drive shaft 11 so as to prevent the weight of the slat 4 and the bottom rail 8 from dropping.

In order to stably maintain the elevating position of the slat 4, the pair of ends 571 of the coiled brake spring 57 is the output shaft so that the take-up shaft 52 is not idle except during the elevating operation. It is fitted so as to engage with both sides of the protrusion 564 of the member 56. Further, the spring case 58 accommodates the coiled brake spring 57 in a reduced diameter state, whereby the brake spring 57 always presses the inner peripheral surface of the spring case 58 so that the brake spring 57 can rotate relative to the spring case 58. However, the predetermined braking force is activated. On the other hand, in the spring case 58, a pair of concave portions 582 provided in a part thereof are non-rotatably locked by convex portions 557 provided in each of the case members 55a and 55b to accommodate the case members 55a and 55b, respectively. Since it is fitted to the portion 556, the spring case 58 is fixed so as not to rotate.

The rotary relay plate 59 is composed of a substantially cylindrical member having an outer diameter substantially the same as the diameter of the brake spring 57 housed in the spring case 58 with a reduced diameter, and has substantially the same diameter as the shaft hole 565 of the output shaft member 56. A shaft hole 591 is formed. Therefore, the shaft hole 591 can be inserted through the drive shaft 11 without engaging. The rotary relay plate 59 is generally composed of a cylindrical member, but more specifically, on the tip surface of the rotary relay plate 59, a predetermined angle (angle α2 described later) from the axis center thereof at a position near the peripheral edge thereof. A protrusion 592 that protrudes in the range of 1 is provided. The tip surface of the rotary relay plate 59 is arranged so as to be in contact with the proximal end surface of the output shaft member 56 via the inside of the brake spring 57 (see FIG. 2B), and the rotary relay plate 59 is a case member. It is rotatably accommodated in each of the accommodating portions 555 of 55a and 55b. Therefore, the protrusion piece 592 on the tip end surface side of the rotation relay plate 59 can be relatively rotated as long as it is within the range of the engagement receiving portion 563 of the recessed region excluding the protrusion 564 in the output shaft member 56, that is, the rotation relay. Even if the plate 59 rotates, it is not rotationally transmitted to the output shaft member 56 until the protrusion piece 592 comes into contact with the protrusion 564 of the output shaft member 56 via the end portion 571 of the brake spring 57. After the contact, the rotation of the rotation relay plate 59 is rotationally transmitted to the output shaft member 56.

Further, on the base end surface of the rotation relay plate 59, a groove-shaped engagement receiving portion 593 is formed around the shaft hole 591 except for a part of the rotation receiving portion 594. The rotation receiving portion 594 is formed within a range of a predetermined angle (an angle α3 described later) from the axis center of the shaft hole 591. In this example, the groove-shaped engaging receiving portion 593 is used to form the rotating receiving portion 594, but it does not have to be groove-shaped as long as it has the same function.

The input shaft member 60 has a cylindrical shaft portion 601 having a substantially square hole-shaped shaft hole 602 directly connected to the drive shaft 11, and a range of a predetermined angle (angle α4 described later) from the shaft center of the shaft portion 601. A protrusion 603 projecting alongside the shaft portion 601 is formed via a flange 604 on which the cylindrical shaft portion 606 is formed. With the drive transmission output side surface of the flange 604 of the input shaft member 60 arranged so as to be in contact with the drive transmission input side surface of the rotary relay plate 59 (see FIG. 2B), the shaft portion 606 of the input shaft member 60 and The flange 604 is relatively rotatably supported by a circular opening 559d and a housing portion 555 at the end of the case members 55a and 55b on the drive transmission input side, respectively. Further, the shaft portion 601 can support the shaft hole 565 of the output shaft member 56 and the shaft hole 591 of the rotary relay plate 59.

Therefore, the protrusion 603 of the input shaft member 60 can rotate relative to each other within the range of the engagement receiving portion 593 of the rotation relay plate 59, that is, the input shaft member 60 directly connected to the drive shaft 11 rotates. Even so, the rotation is not transmitted to the rotation relay plate 59 until the protrusion piece 603 comes into contact with the rotation receiving portion 594 of the rotation relay plate 59, but after the contact, the rotation of the input shaft member 60 does not occur. The rotation is transmitted to the rotation relay plate 59.

Therefore, in the delay unit 5a of the first embodiment, the delay amount between the input shaft member 60 and the rotation relay plate 59 and the rotation relay plate 59 before the rotation of the input shaft member 60 is rotationally transmitted to the output shaft member 56. The delay amount, which is the sum of the delay amounts between the output shaft member 56 and the output shaft member 56, is used.

For example, as shown in FIG. 5A, the delay amount between the rotary relay plate 59 and the output shaft member 56 is the protrusion 564 protruding in the range of the angle α1 and the protrusion piece 592 protruding in the range of the angle α2. The delay amount is β. For example, if α1 ≈ 60 degrees and α2 ≈ 90 degrees, the delay amount β ≈ 210 degrees. Further, as shown in FIG. 5B, the delay amount between the input shaft member 60 and the rotation relay plate 59 is the rotation receiving portion 594 in the range of the angle α3 and the protrusion piece 603 protruding in the range of the angle α4. The delay amount is γ. For example, if α3 ≈ 60 degrees and α4 ≈ 60 degrees, the delay amount γ ≈ 240 degrees. The delay amount until the rotation of the input shaft member 60 is transmitted to the output shaft member 56 is β + γ≈450 degrees. Therefore, various delay amounts can be realized by setting the rotation amount delayed by the delay unit 5a to be equal to or greater than the angle adjustment range of the slats 4, and the rotation relay plate 59 rotates and relays with a predetermined delay amount. Functions as a delay adjusting member.

Among the constituent members of the delay unit 5a of the first embodiment, the input shaft member 60 is the only member that rotates directly connected to the drive shaft 11, and the delay unit 5a of the first embodiment is arranged side by side on the drive shaft 11. By simply doing so, it is possible to perform interlocking rotation with a predetermined delay amount relative to the rotation of the tilt drum 51 with respect to the rotation of the take-up shaft 52 via the obstacle detection stop device 53 (FIGS. 4 and 2 (b)). reference).

In particular, as shown in FIG. 4, the case portions 55a and 55b of the delay unit 5a of the first embodiment are driven by a claw portion 558 that grips the protrusion 50b provided on the support case 50 of the cord support unit 5b. It is formed on each of the side wall portions on the transmission output side. As a result, the delay unit 5a of the first embodiment can be stably assembled on the drive shaft 11 in such a manner that it can be easily attached to and detached from the cord support unit 5b. The shaft portion 561 of the output shaft member 56 in the delay unit 5a is engaged with the shaft hole 531a of the camshaft 531 of the obstacle detection stop device 53 and is integrally rotatable, but the obstacle detection stop device When an excessive load is applied to the rotation of the drive shaft 11 even though the 53 is operating, an undesired force that causes the obstacle detection / stopping device 53 to come off from the support case 50 acts to separate the connected state. An undesired force also acts in the direction, which can cause a failure. Therefore, in order to alleviate the undesired force that separates the connected state due to such an overload, as shown in FIG. 4, the support case 50 has a restraining wall 50j that suppresses the upward movement of the camshaft 531. It is preferable to provide.

Although will be described later as the second embodiment, the rotary relay plate 59 is omitted, the input shaft member 60 is directly connected to the output shaft member 56, and the delay amount between the input shaft member 60 and the output shaft member 56 is determined. It can be configured to work, and the same output shaft member 56, brake spring 57, spring case 58, and input shaft member 60 can be shared to generate different delay amounts.

For example, as shown in FIG. 5C, the amount of delay between the input shaft member 60 and the output shaft member 56 when the rotary relay plate 59 is not used is an angle with the protrusion 564 projecting within the range of the angle α1. The delay amount η is provided between the protrusion piece 603 and the protrusion piece 603 that protrudes in the range of α4. For example, if α1 ≈ 60 degrees and α4 ≈ 60 degrees, the delay amount η ≈ 240 degrees. Therefore, various delay amounts can be realized by setting the rotation amount delayed by the delay unit 5a to be equal to or greater than the angle adjustment range of the slats 4.

Further, the rotary relay plate 59 can be changed by preparing a rotary relay plate 59 that changes the shape of the protrusion 592 (angle α2) or the shape of the rotary receiving portion 594 (angle α3) to generate a plurality of types of delay amounts. It is also possible to realize many kinds of delay amounts only by itself.

The case members 55a and 55b fit the output shaft member 56, the brake spring 57, the spring case 58, the rotary relay plate 59, and the input shaft member 60 in the direction perpendicular to the drive shaft 11 (in this example, the front-rear direction). It is designed to be formed and accommodated. More specifically, a fitting receiving portion 551 having a protrusion 553 is formed on the upper surface and the lower surface of the case member 55a, respectively, and a hole portion that can be fitted with the protrusion 553 is formed on the upper surface and the lower surface of the case member 55b, respectively. A fitting piece 552 having 554 and engaging with the fitting receiving portion 551 is formed. That is, when fitting and forming one case by using two case members, if the fitting is formed in the direction parallel to the drive shaft 11, the fitting force is weakened by the rotation of the drive shaft 11, and there is a quality problem. Since it can occur, it is necessary to form a coalescence using screws or the like. However, by configuring the fitting to be formed in the direction perpendicular to the drive shaft 11 as in this embodiment, the fitting is strong against the rotation of the drive shaft 11. Since it has a resultant force, it is not necessary to form a coalescence such as a screw, which contributes to the ease of assembly and the reduction of cost in a comprehensive manner.

Further, in this embodiment, an example in which the shaft portion 561 of the output shaft member 56 and the camshaft 531 of the obstacle detection / stopping device 53 are engaged with each other in a hexagonal shape has been described, but there are more cases from the viewpoint of improving the assembling property. It is preferable to have an engaging shape consisting of sides. That is, by configuring the shaft portion 561 of the output shaft member 56 so as to have a polygonal shape and configuring the camshaft 531 of the obstacle detection / stopping device 53 so as to engage with the shaft portion 561, it can be assembled with a slight rotation operation. , Its assemblability is improved.

Then, in the case of the horizontal blind shown in FIG. 1 to which the cord support device 5 having the delay unit 5a of the first embodiment is applied, the rotation of the tilt drum 51 and the take-up shaft 52 can be operated by one drive shaft 11. However, if a tilt operation without raising and lowering the slats 4 is desired, the bottom rail 8 does not move up and down by the tilt operation. Further, when the bottom rail 8 is not in the lower limit position, the operability of tilting after the folded portion of the slats 4 rises during the tilt operation is not impaired.

For example, when a predetermined number of slat 4s in a horizontal state as a stationary state shown in FIG. 6A are folded into a predetermined number of bottom rails 8, the angle of the slat 4 is adjusted by a tilt operation as shown in FIG. 6B. Even so, the bottom rail 8 does not move up and down. Further, as shown in FIG. 6 (c), the operability of tilting after the folded portion of the slats 4 is raised during the tilt operation is not impaired.

Further, as shown in FIG. 3, the case members 55a and 55b are formed with an upper corner portion 550a having a dent in a square shape. Therefore, when the delay unit 5a is installed in the head box 1, the upper corner portion 550a of the delay unit 5a supported by the lower corner portion 550b engages with the upper end of the head box 1 (see FIG. 6). It is possible to suppress rattling in the front-back direction and the up-down direction. Further, since the claw portions 558 are formed on the case members 55a and 55b of the delay unit 5a, rattling in the left-right direction can be suppressed by gripping the projection portion 50b of the support case 50 in the cord support unit 5b. Will be done.

Further, in this embodiment, an example of engaging the shaft portion 561 of the output shaft member 56 with the cam shaft 531 of the obstacle detection / stopping device 53 has been described, but the take-up shaft does not go through the obstacle detection / stopping device 53. Even in the case of engaging with 52, the action / effect according to the present invention can be exhibited.

(Example 2)
Next, the cord support device 5 having the delay unit 5a of the second embodiment will be described. 7 (a) and 7 (b) are perspective views and cross-sectional views showing a schematic configuration of a cord support device 5 having a delay unit 5a according to the second embodiment of the present invention, respectively. FIG. 8 is an exploded perspective view showing a schematic configuration of the delay unit 5a according to the second embodiment of the present invention. Further, FIG. 9 is a perspective view illustrating a method of assembling the cord support device 5 having the delay unit 5a according to the second embodiment of the present invention. In the second embodiment, the same reference numbers are assigned to the components having the same functions as those in the first embodiment.

The cord support device 5 having the delay unit 5a of the second embodiment shown in FIG. 7A is configured by arranging the delay unit 5a in parallel with the cord support unit 5b as in the first embodiment. Further, the cord support unit 5b according to the delay unit 5a of the second embodiment rotatably supports the tilt drum 51 and the take-up shaft 52 with the drive shaft 11 as the rotation axis by the support case 50 as in the first embodiment. ing. The ladder cord 9 to be hung from the tilt drum 51 and the elevating cord 10 to be hung from the take-up shaft 52 are led out from the outlet 50a provided on the bottom surface of the support case 50.

However, the take-up shaft 52 in the cord support unit 5b according to the delay unit 5a of the second embodiment is capable of winding or rewinding the tape-shaped elevating cord 10 in multiple layers, and the tilt drum 51 is provided by a torsion coil spring. A hanging member 511 is attached to support the ladder cord 9 in a suspended manner. Such a configuration of the cord support unit 5b is suitable for a horizontal blind that requires miniaturization.

The suspension member 511 is composed of a torsion coil spring, and both ends of the torsion coil spring are bent to form a loop-shaped ladder cord attachment portion 511a and a locking end portion 511b. The upper ends of the pair of front and rear ladder cords 9 are attached to the ladder cord attachment portion 511a and are suspended and supported. Then, the hanging member 511 is attached by tightening the tilt drum 51, and is integrally rotated with the tilt drum 51 until the locking end portion 511b abuts on the wall portion formed in the support case 50, and is locked. When the end portion 511b comes into contact with the wall portion formed on the support case 50, the tightening force is weakened and the end portion 511b slips with respect to the tilt drum 51. Therefore, based on the rotation of the tilt drum 51, the angles of the slats 4 are adjusted in the same phase via the ladder code 9.

It is possible to apply the delay unit 5a of the first embodiment shown in FIG. 3 to the cord support unit 5b related to the delay unit 5a of the second embodiment, but it is carried out in order to make the best use of the intention of miniaturization thereof. The delay unit 5a of Example 2 is configured as shown in FIG.

With reference to FIG. 8, the delay unit 5a of the second embodiment omits the rotary relay plate 59 and has a smaller shape of the case members 55a and 55b as compared with the first embodiment. The output shaft member 56, the brake spring 57, the spring case 58, and the input shaft member 60 are shared with the first embodiment.

Further, regarding the shapes of the case members 55a and 55b, the formation of the accommodating portion 555 accommodated by the rotary relay plate 59 is omitted as compared with the first embodiment, and the shaft portion 606 and the flange 604 of the input shaft member 60 are each case. The same operation and effect as in Example 1 except that the members 55a and 55b are supported by the circular opening 559d and the opening side surface 559b at the end on the drive transmission input side so as to be relatively rotatable and contribute to miniaturization. Produces.

That is, in the delay unit 5a of the second embodiment, the rotary relay plate 59 is omitted, the input shaft member 60 is directly connected to the output shaft member 56, and the input shaft member 60 and the output shaft member 56 are connected to each other. The delay amount is configured to work, and a different delay amount is generated while sharing the same output shaft member 56, brake spring 57, spring case 58, and input shaft member 60 as in the first embodiment.

For example, as described above with reference to FIG. 5 (c), the delay amount between the input shaft member 60 and the output shaft member 56 when the rotary relay plate 59 is not used is a protrusion protruding in the range of the angle α1. The delay amount η is formed between the portion 564 and the protrusion piece 603 protruding in the range of the angle α4. For example, if α1 ≈ 60 degrees and α4 ≈ 60 degrees, the delay amount η ≈ 240 degrees. Therefore, various delay amounts can be realized by setting the rotation amount delayed by the delay unit 5a to be equal to or greater than the angle adjustment range of the slats 4.

Further, also in the second embodiment, as shown in FIG. 7B, the tilt drum 51 is connected to the drive shaft 11 so as to be non-rotatably relative to the drive shaft 11 and is supported by the support case 50. On the other hand, the take-up shaft 52 is supported by the support case 50 as non-connected (non-engaged) with respect to the drive shaft 11. Further, an obstacle detection / stopping device 53 is provided on the tip end side of the take-up shaft 52 to prevent the take-up shaft 52 supporting the elevating cord 10 from rotating when tension in the pull-out direction does not act on the elevating cord 10. However, the obstacle detection / stopping device 53 is also supported by the support case 50 as a non-connection (non-engagement) with respect to the drive shaft 11. The case body of the obstacle detection / stopping device 53 is fixed to the tip end side of the take-up shaft 52, but the tubular camshaft 531 housed in the case body of the obstacle detection / stopping device 53 is being lowered by the slats 4. When the bottom rail 8 collides with an obstacle, the rewinding of the elevating cord 10 is stopped, the descent of the slat 4 and the bottom rail 8 is stopped, and the play necessary to prevent the reverse winding of the elevating cord 10 is provided. , It is possible to rotate integrally with the rotation of the take-up shaft 52.

Also in the delay unit 5a of the second embodiment, the input shaft member 60 is the only member that rotates directly connected to the drive shaft 11, and the delay unit 5a of the second embodiment is simply arranged side by side on the drive shaft 11. , It is possible to perform interlocking rotation with a predetermined delay amount relative to the rotation of the tilt drum 51 with respect to the rotation of the take-up shaft 52 via the obstacle detection stop device 53 (see FIGS. 9 and 7 (b)).

In particular, as shown in FIG. 9, the case portions 55a and 55b of the delay unit 5a of the second embodiment are driven by a claw portion 558 that grips the protrusion 50b provided on the support case 50 of the cord support unit 5b. It is formed on each of the side wall portions on the transmission output side. As a result, the delay unit 5a of the second embodiment can be stably assembled on the drive shaft 11 in a manner that can be easily attached to and detached from the cord support unit 5b.

Further, in the second embodiment as well, the case members 55a and 55b are configured to be fitted and formed in the direction perpendicular to the drive shaft 11, and have a strong fitting force against the rotation of the drive shaft 11, so that the screws and the like are combined. No formation is required, which contributes to ease of assembly and cost reduction in a comprehensive manner.

Further, as shown in FIG. 8, also in the second embodiment, the case members 55a and 55b are formed with an upper corner portion 550a having a dent in a square shape. Therefore, when the delay unit 5a is installed in the head box 1, the upper corner portion 550a of the delay unit 5a supported by the lower corner portion 550b engages with the upper end of the head box 1 (similar to FIG. 6 described above). ), It is possible to suppress rattling in the front-back direction and the up-down direction. Further, since the claw portions 558 are formed on the case members 55a and 55b of the delay unit 5a, rattling in the left-right direction can be suppressed by gripping the projection portion 50b of the support case 50 in the cord support unit 5b. Will be done.

Further, also in this embodiment, the shaft portion 561 of the output shaft member 56 is configured to have a polygonal shape, and the camshaft 531 of the obstacle detection / stopping device 53 is configured to engage with the shaft portion 561, so that a slight rotation operation is required. It can be assembled, and its assemblability is improved.

If the horizontal blind is to which the cord support device 5 having the delay unit 5a of the second embodiment is applied, the tilt drum 51 and the take-up shaft 52 can be rotated by one drive shaft 11. Even in this case, if a tilt operation without raising and lowering the slats 4 is desired, the bottom rail 8 does not move up and down by the tilt operation. Further, when the bottom rail 8 is not in the lower limit position, the operability of tilting after the folded portion of the slats 4 rises during the tilt operation is not impaired.

Further, in this embodiment, an example of engaging the shaft portion 561 of the output shaft member 56 with the cam shaft 531 of the obstacle detection / stopping device 53 has been described, but the take-up shaft does not go through the obstacle detection / stopping device 53. Even in the case of engaging with 52, the action / effect according to the present invention can be exhibited.

Further, the delay units 5a of the first and second embodiments are applied to the cord support unit 5b having a configuration in which the string-shaped elevating cord 10 is wound by the spiral winding type spiral shaft 52C while maintaining its shape and structure. The cord support device 5 can also be configured.

For example, FIGS. 10A and 10B are perspective views and cross-sectional views showing a schematic configuration of a spiral winding type cord support device 5 having the delay unit 5a of the second embodiment according to the present invention, respectively. Further, FIG. 11 is a perspective view illustrating a method of assembling the spiral winding type cord support device 5 having the delay unit 5a of the second embodiment according to the present invention. In FIGS. 10 and 11, the components having the same functions as those in the first embodiment are designated by the same reference numbers.

The spiral winding type cord support device 5 shown in FIG. 10A is configured by arranging the delay unit 5a in parallel with the cord support unit 5b in the same manner as described above. However, the spiral shaft 52C in the cord support unit 5b shown in FIG. 10A has a drive shaft 11 inserted into the substantially cylindrical main body in a non-engaged (non-connected) manner, and has a spiral screw on the surface. A joint ridge is formed, and the upper end of the elevating cord 10 is attached to the recessed portion in the vicinity of the tip of the spiral shaft 52C, so that the elevating cord 10 can be wound or rewound.

The spiral spiral ridge on the spiral shaft 52C can be screwed with the spiral screwed ridge 50d on the inner peripheral surface provided on the support case 50, and the spiral shaft 52C (winding shaft 52) can be screwed. ), The spiral shaft 52C itself moves relative to the case portion 51C in the axial direction.

A tilt drum 51 is formed on the case portion 51C by mounting a suspension member 511 by a torsion coil spring to suspend and support the ladder cord 9.

Both ends of the torsion coil spring of the suspension member 511 are bent to form a loop-shaped ladder cord attachment portion 511a and a locking end portion 511b, and the suspension member 511 is attached by tightening the tilt drum 51. The hanging member 511 rotates integrally with the tilt drum 51 until the locking end portion 511b abuts on the wall portion formed on the support case 50, and the locking end portion 511b is formed on the support case 50. When it comes into contact with the portion, the tightening force is weakened and the tilt drum 51 slips. Therefore, based on the rotation of the tilt drum 51, the angles of the slats 4 are adjusted in the same phase via the ladder code 9.

Also in the example shown in FIG. 10A, the support case 50 rotatably supports the tilt drum 51 and the take-up shaft 52 with the drive shaft 11 as the rotation shaft. The ladder cord 9 to be hung from the tilt drum 51 and the elevating cord 10 to be hung from the take-up shaft 52 are led out from the outlet 50a provided on the bottom surface of the support case 50.

Then, as shown in FIG. 10B, the case portion 51C (tilt drum 51) is connected to the drive shaft 11 so as not to rotate relative to the drive shaft 11 and is supported by the support case 50. On the other hand, the take-up shaft 52 is supported by the support case 50 as unconnected to the drive shaft 11.

As shown in FIGS. 10A and 10B, the delay unit 5a of the second embodiment is via a disk-shaped support assisting member 70 fixed to the tip of the spiral shaft 52C (winding shaft 52). It is configured to be attached.

In the delay unit 5a of the second embodiment, the input shaft member 60 is the only member that rotates directly connected to the drive shaft 11, and the delay unit 5a of the second embodiment is simply arranged side by side on the drive shaft 11 to form a spiral shaft. The rotation of the tilt drum 51 can be interlocked with the rotation of the 52C (winding shaft 52) by a predetermined delay amount (see FIGS. 11 and 10 (b)).

In particular, as shown in FIG. 11, the claw portions 558 of the case portions 55a and 55b of the delay unit 5a of the second embodiment have a disk shape provided on the spiral shaft 52C (winding shaft 52) of the cord support unit 5b. It can be gripped with respect to the support auxiliary member 70. As a result, the delay unit 5a of the second embodiment can be stably assembled on the drive shaft 11 in a manner that can be easily attached to and detached from the spiral cord support unit 5b.

[Other Examples]
In the delay units 5a of the first and second embodiments described above, the assembling property is improved in forming the cord support device 5 by arranging them side by side on the outside of various support cases 50, and the cord support device 5 is downsized. He explained that it is excellent in versatility, reduction of parts management burden, and practicality that contributes to cost reduction. In particular, it was intended to increase the number of shared members as much as possible between the delay units 5a of the first and second embodiments, with an emphasis on contributing to the reduction of the burden of parts management and the cost reduction.

Since the enlargement of the cord support device 5 in the front-rear direction or the up-down direction also involves the increase in size of the shielding device itself, the delay unit 5a of the first and second embodiments can avoid the increase in size, which is effective. It produces various actions and effects.

On the other hand, as can be seen by comparing the delay unit 5a of the first embodiment shown in FIG. 3 with the delay unit 5a of the second embodiment shown in FIG. 8, the delay unit 5a of the first embodiment shown in FIG. Compared to the delay unit 5a of Example 2, the case members 55a and 55b are configured to be larger in the left-right direction. Therefore, for example, when the installation margin in the head box 1 is not sufficient, it is assumed that the width of the case members 55a and 55b in the delay unit 5a of the first embodiment should be made smaller in the left-right direction.

Therefore, Examples 3 and 4 will be described in order as a configuration example in which the size of the delay unit 5a itself in the left-right direction is emphasized rather than contributing to the reduction and cost reduction of the parts management burden. do. Comprehensively, in Examples 1 and 2, it is configured to associate a rotation transmission portion that causes a predetermined delay amount in the axial direction of the drive shaft 11, but in Examples 3 and 4, it is configured with respect to the drive shaft 11. By configuring the rotation transmission portions that generate the predetermined delay amount in the vertical direction, the widths of the case members 55a and 55b in the delay unit 5a of the third and fourth embodiments are made smaller in the left-right direction. ..

(Example 3)
FIG. 12 is an exploded perspective view showing a schematic configuration of the delay unit according to the third embodiment of the present invention. The components having the same functions as those in the first embodiment are designated by the same reference numbers. As shown in FIG. 12, the delay unit 5a of the present embodiment has the output shaft member 56, the brake spring 57, the spring case 58, the rotary relay plate 59, and the input shaft member, as in the above-described first embodiment. It is composed of 60 and case members 55a and 55b.

The output shaft member 56 in this embodiment has an outer octagonal cylindrical shaft portion 561 and a flange 567 in which a tubular shaft portion 568 is formed on the base end side (drive transmission input side) of the shaft portion 561. A protrusion 564 projecting from the center of the axis to the drive transmission input side within a predetermined angle (angle α1 described later) is provided in the vicinity of a part of the outer periphery thereof. The shaft portion 568 and the flange 567 of the output shaft member 56 are rotatably supported by the circular opening 559c and the opening side surface 559a on one opening side surface 559a (drive transmission output side) of the case members 55a and 55b, respectively. To. In the output shaft member 56 of the present embodiment, engagement receiving portions 563a and 563b recessed in a stepped shape are formed on the surface of the flange 567 on the base end side (drive transmission input side). Further, the shaft portion 561 is formed with a shaft hole 565 through which the drive shaft 11 can be inserted without engagement. The outer octagonal tubular shaft portion 561 is rotatable and rotatable integrally with the tubular cam shaft 531 having the octagonal shaft hole 531a of the obstacle detection stop device 53, and is an output shaft. The rotation of the member 56 can be transmitted so as to rotate in synchronization with the cam shaft 531 of the obstacle detection / stopping device 53 (similar to FIG. 2B described above).

The brake spring 57 and the spring case 58 have a larger diameter than those of the first and second embodiments in order to accommodate the rotary relay plate 59 of the present embodiment, which will be described later, inside the brake spring 57 and the spring case 58. Similar to No. 2 and 2, it functions as a braking member that suppresses the rotation of the output shaft member 56 other than the rotation due to the rotation transmission from the input shaft member 60. That is, a predetermined braking force is applied to the rotation of the output shaft member 56 transmitted from the camshaft 531 of the obstacle detection / stopping device 53. In order to stably maintain the elevating position of the slat 4, the pair of ends 571 of the coiled brake spring 57 is the output shaft so that the take-up shaft 52 is not idle except during the elevating operation. It is fitted so as to engage with both sides of the protrusion 564 of the member 56. Further, the spring case 58 accommodates the coiled brake spring 57 in a reduced diameter state, whereby the brake spring 57 always presses the inner peripheral surface of the spring case 58 so that the brake spring 57 can rotate relative to the spring case 58. However, the predetermined braking force is activated. On the other hand, in the spring case 58, a pair of concave portions 582 provided in a part thereof are non-rotatably locked by convex portions 557 provided in each of the case members 55a and 55b to accommodate the case members 55a and 55b, respectively. Since it is fitted to the portion 556, the spring case 58 is fixed so as not to rotate.

The rotary relay plate 59 of this embodiment is significantly different from the above-described first embodiment. The rotary relay plate 59 of this embodiment has a smaller outer diameter than the diameter of the brake spring 57 housed in the spring case 58 with a reduced diameter, and has a protrusion 592a on a part of the outer peripheral surface thereof, and has an inner peripheral surface. It is composed of a substantially cylindrical member having a rotary receiving portion 594 in a part of the upper part, and a shaft hole 591 having substantially the same diameter as the shaft hole 565 of the output shaft member 56 is formed. Therefore, the shaft hole 591 can be inserted through the drive shaft 11 without engaging. The drive transmission output side surface of the rotary relay plate 59 has a shape capable of contacting the engagement receiving portions 563a and 563b on the drive transmission input side surface of the output shaft member 56 via the inside of the brake spring 57, and the contact arrangement thereof. In this state, the rotary relay plate 59 is located inside the brake spring 57 housed in the spring case 58 with a reduced diameter, and is housed so as to be rotatable relative to the case members 55a and 55b. Therefore, the protrusion 592a of the rotation relay plate 59 can be relatively rotated as long as it is within the range of the engagement receiving portion 563b in the recessed region excluding the protrusion 564 in the output shaft member 56, that is, the rotation relay plate 59 rotates. Even so, the rotation is not transmitted to the output shaft member 56 until the protrusion 592a comes into contact with the protrusion 564 of the output shaft member 56 via the end portion 571 of the brake spring 57, but after the contact. The rotation of the rotation relay plate 59 is transmitted to the output shaft member 56.

Further, on the inner peripheral surface of the rotation relay plate 59, a concave engagement receiving portion 593 is formed around the shaft hole 591 except for a part of the rotation receiving portion 594. The rotation receiving portion 594 is formed within a range of a predetermined angle (an angle α3 described later) from the axis center of the shaft hole 591. In this example, an example in which the rotary receiving portion 594 and the protrusion 592a are formed within the same rotation angle range is shown, but it is assumed that the sizes and arrangements of the rotary receiving portion 594 and the protrusion 592a are changed depending on the application. be able to.

The input shaft member 60 has a cylindrical shaft portion 601 having a substantially square hole-shaped shaft hole 602 directly connected to the drive shaft 11, and a range of a predetermined angle (angle α4 described later) from the shaft center of the shaft portion 601. A protrusion 603 projecting alongside the shaft portion 601 is formed on the drive transmission output side surface of the flange 604 in which the cylindrical shaft portion 606 is formed. The shaft portion 606 and the flange 604 of the input shaft member 60 accommodate the case members 55a and 55b, respectively, in a state where the output side surface of the flange 604 of the input shaft member 60 is arranged so as to be in contact with the base end surface of the rotary relay plate 59. It is supported so as to be relatively rotatable by a circular opening 559d and an opening side surface 559b at the end of the portion 556 on the drive transmission input side. Further, the shaft portion 601 can support the shaft hole 565 of the output shaft member 56 and the shaft hole 591 of the rotary relay plate 59.

Therefore, the protrusion 603 of the input shaft member 60 can rotate relative to each other within the range of the engagement receiving portion 593 of the rotation relay plate 59, that is, the input shaft member 60 directly connected to the drive shaft 11 rotates. Even so, the rotation is not transmitted to the rotation relay plate 59 until the protrusion piece 603 comes into contact with the rotation receiving portion 594 of the rotation relay plate 59, but after the contact, the rotation of the input shaft member 60 does not occur. The rotation is transmitted to the rotation relay plate 59.

Therefore, in the delay unit 5a of the third embodiment, the delay amount between the input shaft member 60 and the rotation relay plate 59 and the rotation relay plate 59 before the rotation of the input shaft member 60 is rotationally transmitted to the output shaft member 56. The delay amount, which is the sum of the delay amounts between the output shaft member 56 and the output shaft member 56, is used.

For example, as shown in FIG. 14A, the delay amount between the rotary relay plate 59 and the output shaft member 56 is the protrusion 564 protruding in the range of the angle α1 and the protrusion 592a protruding in the range of the angle α2. The delay amount is β. Further, as shown in FIG. 14B, the delay amount between the input shaft member 60 and the rotation relay plate 59 is the rotation receiving portion 594 in the range of the angle α3 and the protrusion piece 603 protruding in the range of the angle α4. The delay amount is γ. The delay amount until the rotation of the input shaft member 60 is transmitted to the output shaft member 56 is β + γ. Therefore, the delay unit 5a of the present embodiment can realize the same function as the delay unit 5a of the first embodiment, and the rotary relay plate 59 functions as a delay adjusting member for rotary relay with a predetermined delay amount.

In particular, in the delay unit 5a of the present embodiment, the rotary relay plate 59 is located inside the spring case 58 and is housed in the case portions 55a and 55b. The width in the direction and the upper limit direction can be realized, and the width in the left-right direction can be reduced as compared with the delay unit 5a of the first embodiment.

Among the constituent members of the delay unit 5a of the third embodiment, the input shaft member 60 is the only member that rotates directly connected to the drive shaft 11, and the delay unit 5a of the third embodiment is arranged side by side on the drive shaft 11. By simply doing so, it is possible to perform interlocking rotation with a predetermined delay amount relative to the rotation of the tilt drum 51 with respect to the rotation of the take-up shaft 52 via the obstacle detection stop device 53 (similar to FIG. 4 described above).

Further, also in this embodiment, the case portions 55a and 55b have claw portions 558 formed on the side wall portions on the drive transmission output side to grip the protrusions 50b provided on the support case 50 of the cord support unit 5b, respectively. Has been done. As a result, the delay unit 5a of the third embodiment can be stably assembled on the drive shaft 11 in such a manner that it can be easily attached to and detached from the cord support unit 5b.

Then, in the case of a horizontal blind to which the cord support device 5 having the delay unit 5a of the third embodiment is applied, if a tilt operation without raising and lowering the slats 4 is desired, the bottom rail 8 is moved up and down by the tilt operation. There is no such thing. Further, when the bottom rail 8 is not in the lower limit position, the operability of tilting after the folded portion of the slats 4 rises during the tilt operation is not impaired (similar to FIG. 6 described above).

Further, as shown in FIG. 12, also in the third embodiment, the case members 55a and 55b are formed with an upper corner portion 550a having a dent in a square shape. Therefore, when the delay unit 5a is installed in the head box 1, the upper corner portion 550a of the delay unit 5a supported by the lower corner portion 550b engages with the upper end of the head box 1 (similar to FIG. 6 described above). ), It is possible to suppress rattling in the front-back direction and the up-down direction. Further, since the claw portions 558 are formed on the case members 55a and 55b of the delay unit 5a, rattling in the left-right direction can be suppressed by gripping the projection portion 50b of the support case 50 in the cord support unit 5b. Will be done.

(Example 4)
Next, the cord support device 5 having the delay unit 5a of the fourth embodiment will be described. FIG. 13 is an exploded perspective view showing a schematic configuration of the delay unit according to the fourth embodiment of the present invention. The components having the same functions as those in the third embodiment are designated by the same reference numbers. As shown in FIG. 13, the delay unit 5a of the present embodiment has the output shaft member 56, the brake spring 57, the spring case 58, the input shaft member 60, and the case member 55a, as in the above-described third embodiment. , 55b.

Referring to FIG. 13, the delay unit 5a of the fourth embodiment maintains a miniaturized shape of the case members 55a and 55b as compared with the third embodiment, and omits the rotary relay plate 59. The shape of the input shaft member 60 is changed in accordance with the above, and the other output shaft members 56, the brake spring 57, and the spring case 58 are shared with the third embodiment.

The input shaft member 60 in the delay unit 5a of the fourth embodiment is connected to a cylindrical shaft portion 601 having a substantially square hole-shaped shaft hole 602 directly connected to the drive shaft 11 on the proximal end side of the shaft portion 601. A cylindrical relay shaft portion 605 having a larger diameter and a square hole-shaped shaft hole 602, and a relay shaft portion within a predetermined angle (angle α5 described later) from the axis center of the shaft portion 601 and the relay shaft portion 605. A protrusion piece 603a projecting alongside the 605 is formed via a flange 604.

The shaft portion 601 can support the shaft hole 565 of the output shaft member 56. Then, the input shaft member 60 is arranged so that the boundary surface of the relay shaft portion 605 with the shaft portion 601 passes through the inside of the brake spring 57 and comes into contact with the engagement receiving portion 563a at the proximal end surface of the output shaft member 56. The shaft portion 606 and the flange 604 are rotatably supported by the circular opening 559d and the opening side surface 559b at the ends of the housing portions 556 of the case members 55a and 55b on the drive transmission input side, respectively. At this time, the relay shaft portion 605 is located inside the brake spring 57 housed in the spring case 58 with a reduced diameter, and is housed so as to be relatively rotatable with respect to the case members 55a and 55b.

Therefore, the protrusion piece 603a of the input shaft member 60 can rotate relative to each other as long as it is within the range of the engagement receiving portion 563b on the base end surface of the output shaft member 56, that is, the input shaft member directly connected to the drive shaft 11. Even if the 60 rotates, the protrusion piece 603a is not rotationally transmitted to the output shaft member 56 until it comes into contact with the protrusion 564 of the output shaft member 56, but after the contact, the input shaft member 60 The rotation is transmitted to the output shaft member 56.

Further, the shapes of the case members 55a and 55b also maintain the form that contributed to the miniaturization, and the same action and effect as in the third embodiment are produced.

For example, as shown in FIG. 14 (c), the amount of delay between the input shaft member 60 and the output shaft member 56 when the rotary relay plate 59 is not used is an angle with the protrusion 564 projecting within the range of the angle α1. The delay amount η is provided between the protrusion piece 603a and the protrusion piece 603a that protrudes in the range of α5.

Then, also in the fourth embodiment, as in the second embodiment (similar to FIG. 7B described above), the tilt drum 51 is non-rotatably connected to the drive shaft 11 and is supported by the support case 50. On the other hand, the take-up shaft 52 is supported by the support case 50 as non-connected (non-engaged) with respect to the drive shaft 11. Further, an obstacle detection / stopping device 53 is provided on the tip end side of the take-up shaft 52 to prevent the take-up shaft 52 supporting the elevating cord 10 from rotating when tension in the pull-out direction does not act on the elevating cord 10. However, the obstacle detection / stopping device 53 is also supported by the support case 50 as a non-connection (non-engagement) with respect to the drive shaft 11. The case body of the obstacle detection / stopping device 53 is fixed to the tip end side of the take-up shaft 52, but the tubular camshaft 531 housed in the case body of the obstacle detection / stopping device 53 is being lowered by the slats 4. When the bottom rail 8 collides with an obstacle, the rewinding of the elevating cord 10 is stopped, the descent of the slat 4 and the bottom rail 8 is stopped, and the play necessary to prevent the reverse winding of the elevating cord 10 is provided. , It is possible to rotate integrally with the rotation of the take-up shaft 52.

Also in the delay unit 5a of the fourth embodiment, the input shaft member 60 is the only member that rotates directly connected to the drive shaft 11, and the delay unit 5a of the fourth embodiment is simply arranged side by side on the drive shaft 11. The rotation of the tilt drum 51 can be interlocked with the rotation of the take-up shaft 52 by a predetermined delay amount with respect to the rotation of the take-up shaft 52 via the obstacle detection stop device 53 (similar to FIG. 9 described above).

Further, also in the delay unit 5a of the fourth embodiment, in the case portions 55a and 55b, the claw portion 558 that grips the protrusion portion 50b provided on the support case 50 of the cord support unit 5b has a side wall on the drive transmission output side. It is formed in each part. As a result, the delay unit 5a of the fourth embodiment can be stably assembled on the drive shaft 11 in such a manner that it can be easily attached to and detached from the cord support unit 5b.

Further, the delay unit 5a of the third and fourth embodiments is applied to the cord support unit 5b having a configuration in which the string-shaped elevating cord 10 is wound by the spiral winding type spiral shaft 52C, as in the first and second embodiments. The cord support device 5 can also be configured (see FIG. 10 described above). In particular, similarly to FIG. 11 described above, the claw portions 558 of the case portions 55a and 55b of the delay unit 5a of the fourth embodiment have a disk shape provided on the spiral shaft 52C (winding shaft 52) of the cord support unit 5b. It can be gripped with respect to the support auxiliary member 70 of. As a result, the delay unit 5a of the fourth embodiment can be stably assembled on the drive shaft 11 in a manner that can be easily attached to and detached from the spiral cord support unit 5b.

Further, as shown in FIG. 13, in the fourth embodiment as well, the case members 55a and 55b are formed with an upper corner portion 550a having a dent in a square shape. Therefore, when the delay unit 5a is installed in the head box 1, the upper corner portion 550a of the delay unit 5a supported by the lower corner portion 550b engages with the upper end of the head box 1 (similar to FIG. 6 described above). ), It is possible to suppress rattling in the front-back direction and the up-down direction. Further, since the claw portions 558 are formed on the case members 55a and 55b of the delay unit 5a, rattling in the left-right direction can be suppressed by gripping the projection portion 50b of the support case 50 in the cord support unit 5b. Will be done.

(Configuration related to assembly in the headbox for the delay unit)
FIG. 15 is a top view showing a configuration related to assembly in the head box 1 with respect to the delay unit 5a of one embodiment according to the present invention. In particular, FIG. 15 describes the configuration related to the assembly in the head box 1 by taking the delay unit 5a shown in FIG. 13 as an example among the delay units 5a of the above-mentioned Examples 1 to 4 as an example. It should be noted that the same applies to any of Examples 1 to 4.

The upper surface of the head box 1 is open with a length L1 in the front-rear direction, and the inside thereof has a storage space having a length L2 (> L1) in the front-rear direction. The cord support unit 5b including the tilt drum 51, the take-up shaft 52, and the obstacle detection / stopping device 53 is housed in the support case 50, and is displaced in the head box 1 in the front-rear direction and the up-down direction in the house space of the length L2. It is regulated and installed so that there is no such thing. Therefore, in order to install the cord support unit 5b housed in the support case 50 in the head box 1, either the upper surface of the head box 1 is widened and the cord support unit 5b is installed, or the openings at both ends of the head box 1 in the left-right direction (FIG. It is installed by inserting it from (not shown).

On the other hand, the delay unit 5a has a length between the side surface of the case members 55a and 55b on the drive transmission input side and the side surface of the shaft portion 561 on the drive transmission output side when viewed from above as shown in FIG. d is shorter than the length L1 opened on the upper surface of the head box 1. Therefore, the delay unit 5a can be easily installed in the accommodation space of the head box 1 at a desired position. That is, in order to install the delay unit 5a in the head box 1, the upper surface of the head box 1 is widened and installed, or the delay unit 5a is inserted and installed from the openings (not shown) at both ends in the left-right direction of the head box 1. No need.

Further, the delay unit 5a has an outer shape within an arc S having a diameter D (≦ L2) from the center of gravity Op when viewed from above as shown in FIG. Therefore, when the delay unit 5a is installed in the head box 1, it can face the cord support unit 5b housed in the support case 50 to be connected, for example, by rotating around the center of gravity OP.

More specifically, when assembling the delay unit 5a in the head box 1, first, as shown in FIG. 16A, in the vicinity of the cord support unit 5b housed in the support case 50 to be connected. The delay unit 5a is installed in the accommodation space of the head box 1. Subsequently, as shown in FIG. 16B, the delay unit 5a is rotated in the accommodation space of the head box 1 to face the cord support unit 5b accommodated in the support case 50 to be connected.

Then, as shown in the top view of FIG. 17A, a plurality of delay units 5a and a plurality of cord support units 5b are arranged in the head box 1 according to the specifications of the horizontal blind. As shown in FIG. 17A, a plurality of cord support units 5b are arranged in the orientations corresponding to the hanging positions of the elevating cords 10, and the cord support units 5b to be connected are respectively arranged according to the orientation. The orientation of the delay unit 5a is also arranged. Further, as shown in FIG. 17A, the ladder cord support member 6 can also be arranged at an appropriate position according to the specifications of the horizontal blind.

Subsequently, as shown in the top view of FIG. 17B, the drive shaft 11 is randomly attached to the plurality of delay units 5a, the plurality of cord support units 5b, and the ladder cord support member 6 arranged in the head box 1. The head box 1 is inserted through openings (not shown) at both ends in the left-right direction, a functional member such as an operation unit 2 is arranged, and both ends in the left-right direction of the head box 1 are closed with side caps 1c.

At this time, in the assembly procedure according to the conventional technique, as described by the reference number according to the present invention, when the drive shaft 11 is inserted into the plurality of cord support units 5b, the elevating cords 10 are attached to all the take-up shafts 52. It is necessary to insert while simultaneously aligning the positions (initial winding amount and mounting position of each winding shaft 52). On the other hand, the delay units 5a of Examples 1 to 4 according to the present invention described above are freely combined and separated from the plurality of cord support units 5b, and can be randomly inserted at the time of inserting the drive shaft 11, so that they can be assembled. It is possible to reduce the cost (burden) related to.

That is, in the assembly procedure according to the present invention, after the drive shaft 11 is inserted, the alignment regarding the attachment position of the elevating cord 10 on all the winding shafts 52 (initial winding amount and attachment position of each winding shaft 52) is performed. It can be carried out.

More specifically, after the drive shaft 11 is randomly inserted as described above, as shown in the top view of FIG. 17C, in order to initialize each delay unit 5a with respect to the installation of the plurality of delay units 5a. , The drive shaft 11 is randomly rotated several times (about 2 times) by using the operation code 3. That is, each protrusion and a protrusion piece inside each delay unit 5a (for example, in the example shown in FIG. 12, the protrusion 603 of the input member 60, the protrusions 592a and 594 of the rotary relay plate 59, and the output shaft member 56). In order to initialize the protrusions 564) so that the positions of the protrusions 564) are aligned, the drive shaft 11 is randomly rotated several times (about 2 times) by using the operation code 3.

Subsequently, as shown in the top view of FIG. 17C, the attachment positions (FIG. S) of the elevating cords 10 on the take-up shaft 52 that can idle with respect to the drive shaft 11 in each cord support unit 5b are aligned. Then, the delay units 5a facing each other are connected to the cord support units 5b to be connected by a slide operation in the left-right direction. Since the delay unit 5a in the above-described first to fourth embodiments is formed with an upper corner portion 550a having a square recess in the case members 55a and 55b having a lower corner portion 550b, the upper corner portion 550a is formed. Is engaged with the upper end of the head box 1 and can be slid while suppressing rattling in the front-rear direction and the up-down direction thereof. In this way, each delay unit 5a can be initialized and the positions of the winding shafts 52 in each cord support unit 5b can be easily aligned, and it is possible to realize a well-balanced ascending / descending operation of the slats 4 in the left-right direction. ..

Further, since the claw portions 558 are formed on the case members 55a and 55b of the delay unit 5a, rattling in the left-right direction can be suppressed by gripping the projection portion 50b of the support case 50 in the cord support unit 5b. Will be done. In particular, the claw portion 558 of the delay unit 5a is at a position where the state of being held by the protrusion 50b of the cord support unit 5b to be connected can be visually recognized from the opening on the upper surface of the head box 1 (length FIG. 16 (b). ) Is formed at a position within the range of the length L1), so that they can be easily connected. In the conventional technique, it is necessary to assemble while checking the connection state of the drive shaft 11 with respect to the take-up shaft 52, but the cost (burden) at the time of assembling is large because the connection state cannot be visually observed. In the delay unit 5a in 4, the cost (burden) related to the assembly can be reduced from this point as well.

In the delay unit 5a in the first to fourth embodiments, as shown in FIG. 18A, the delay unit is gripped by the above-mentioned claw portion 558 by fitting with the protrusion 50b of the support case 50. An example of axially connecting the shaft portion 561 (octagonal shaft in the illustrated example) of the output shaft member 56 in 5a and the shaft hole 531a (octagonal shaft hole in the illustrated example) of the camshaft 531 of the obstacle detection stop device 53 will be described. However, it is also possible to realize the shaft connection by directly gripping (fitting) the shaft portion 561 and the cam shaft 531.

For example, as shown in FIG. 18B, the shaft connection can be realized by directly gripping (fitting) the shaft portion 561 and the cam shaft 531. With reference to FIG. 18B, in the delay unit 5a, instead of providing the claw portion 558, the shaft portion 561 of the output shaft member 56 is formed into a cylindrical shape, and the convex portions 561b are provided at two opposite positions on the inner peripheral surface 561a thereof. prepare. Further, on the inner peripheral surface 561a of the shaft portion 561, elastically deformable engaging pieces 561d are provided at two positions orthogonal to the two opposed convex portions 561b so as not to hinder the insertion of the drive shaft 11. Each engaging piece 561d is provided with a fitting protrusion 561c on the outer surface with respect to the axial center of the inner peripheral surface 561a. On the other hand, instead of connecting the camshaft 531 of the obstacle detection / stopping device 53 to the shaft hole 531a shown in FIG. It has an outer peripheral surface shape, and recesses 531b are provided at two facing portions of the portion 5319. Further, a fitting wall 531c having a diameter shorter than that of the inner peripheral wall constituting the shaft hole 5313 of the cam shaft 531 and allowing the drive shaft 11 to be inserted is provided on the surface of the connecting portion of the cam shaft 531.

Then, the convex portion 561b at the two facing portions of the shaft portion 561 can be engaged with the concave portions 531b at the two facing portions of the portion 5319 of the camshaft 531. The fitting protrusion 561c of the elastically deformable engaging piece 561d of the shaft portion 561 fits with the fitting wall 531c of the cam shaft 531 at a position where the portion substantially abuts on the portion 5310 of the portion 5319 of the cam shaft 531. The shaft portion 561 of the delay unit 5a is configured as a locking means for locking the shaft portion 561 to the cam shaft 531. In the connected state by this engagement, the support case 50 rotatably supports the cylindrical shaft portion 561 of the output shaft member 56. Note that FIG. 18B shows an example, and various deformation examples such as exchanging the shapes of the convex portion 561b and the concave portion 531b are assumed.

As illustrated in FIG. 18B, the shaft portion 561 and the camshaft 531 are configured and connected to each other, so that the claw portion 558 and the protrusion 50b as shown in FIG. 18A are not provided. The rotation of the shaft portion 561 and the cam shaft 531 are connected so as not to be relatively rotatable, and the delay unit 5a can be gripped by the cord support unit 5b in such a manner that the deviation in the left-right direction does not occur.

(Example 5)
Next, the cord support device 5 having the delay unit 5a of the fifth embodiment will be described. FIG. 19 is an exploded perspective view showing a schematic configuration of the delay unit 5a according to the fifth embodiment of the present invention. 20 and 21 are perspective views showing a method of assembling the code support device 5 of the modified example having the delay unit 5a of the fifth embodiment according to the present invention, and a schematic configuration thereof. The delay unit 5a and the cord support device 5 of the fifth embodiment shown in FIGS. 19 to 21 are shown as modifications from the above-described first embodiment. Similar modifications can be configured from Examples 2 to 4. Further, the same reference numbers are assigned to the same components as those in each of the above-described embodiments.

In Examples 1 to 4 described above, an example in which the delay unit 5a is arranged side by side from the outside of the support case 50 of the cord support device 5 has been described, but in the fifth embodiment, the delay unit 5a is the support case of the cord support device 5. This is an example in which the take-up shaft 52 is supported inward of the 50 and is configured to rotate in conjunction with the rotation of the tilt drum 51 on the drive shaft 11 with a predetermined delay amount.

As shown in FIG. 19, the delay unit 5a of the fifth embodiment has the output shaft member 56, the brake spring 57, the spring case 58, and the rotary relay plate 59, as in the above-described first embodiment (see FIG. 3). The shape of the case member 55 for accommodating the input shaft member 60 and the shape of the input shaft member 60 are partially different from those of the first embodiment.

Referring to FIG. 19, the delay unit 5a of the fifth embodiment is configured in a shape suitable for supporting the case member 55 inside the support case 50 of the cord support device 5 as compared with the first embodiment. The shape of the input shaft member 60 is changed accordingly, and the output shaft member 56, the brake spring 57, and the spring case 58 are shared by various cord support devices 5.

The input shaft member 60 in the delay unit 5a of the fifth embodiment has substantially the same shape as that of the first embodiment, but is on the drive shaft 11 from the surface of the flange 604 of the input shaft member 60 on the drive transmission input side. The shape of the cylindrical shaft portion 606 having the substantially square hole-shaped shaft hole 602 directly connected is different.

The shaft portion 606 of the input shaft member 60 is provided in the support case 50 of the cord support device 5 as shown in FIGS. 20 and 21 when the delay unit 5a is supported inward of the support case 50 of the cord support device 5. It is rotatably supported by the bearing portion 50c.

The output shaft member 56, the brake spring 57, the spring case 58, and the rotation relay plate 59 have the same shape as in the first embodiment, and the rotation of the input shaft member 60 is rotationally transmitted to the output shaft member 56. By now, the delay amount obtained by totaling the delay amount between the input shaft member 60 and the rotary relay plate 59 and the delay amount between the rotary relay plate 59 and the output shaft member 56 is applied.

The case member 55 in the delay unit 5a of the fifth embodiment has a shape suitable for being supported inside the support case 50 of the cord support device 5, and in this example, the output shaft member 56 and the brake spring 57. , The spring case 58, the rotary relay plate 59, and the cylindrical body having the accommodating portion 556 accommodating the input shaft member 60, the leg portion 550c extending downward with a substantially E-shaped cross section for forming the lower angle portion 550b. It is provided.

The peripheral surface of the accommodating portion 556 of the case member 55 rotatably supports the peripheral edge of the flange 604 of the input shaft member 60, and the convex portion 557 provided on the peripheral surface of the accommodating portion 556 is a part of the spring case 58. The spring case 58 is fixed so as to be non-rotatable by locking a pair of recesses 582 provided in the above. Further, the shaft portion 568 and the flange 567 of the output shaft member 56 are relatively rotatablely supported by the circular opening portion 559c and the opening side surface 559a on the opening side surface 559a (drive transmission output side) of the case member 55, respectively. Therefore, the shaft portion 561 of the output shaft member 56 protrudes from the circular opening 559c of the case member 55, and can be integrally rotatably engaged with the camshaft 531 of the obstacle detection / stopping device 53.

As shown in FIG. 20, the delay unit 5a of the fifth embodiment configured in this way first delays the cord support unit 5b including the tilt drum 51, the take-up shaft 52, and the obstacle detection / stopping device 53. The shaft portion 561 of the output shaft member 56 in the unit 5a is inserted and integrated so as to engage with the shaft hole 531a in the camshaft 531 of the obstacle detection stop device 53. Subsequently, the delay unit 5a, the obstacle detection / stopping device 53, the take-up shaft 52, and the tilt drum 51 are placed and accommodated in the accommodation portions 50d, 50e, 50f, and 50g of the support case 50, respectively, to accommodate the cord support device. 5 is configured. Then, as shown in FIG. 21, the drive shaft 11 is inserted through the cord support device 5.

As a result, the delay unit 5a of the fifth embodiment stops obstacle detection so that the take-up shaft 52 rotates in conjunction with the rotation of the tilt drum 51 on the drive shaft 11 with a predetermined delay amount as shown in FIG. It is connected to the take-up shaft 52 via the device 53 and is housed in the support case 50 of the cord support device 5.

In the case member 55 of the delay unit 5a of the fifth embodiment, the lower corner portion 550b of the leg portion 550c is stably supported inside the support case 50 of the cord support device 5 so as not to be displaced in the left-right direction and the front-back direction. Will be done. The drive shaft 11 is inserted into the cord support device 5 supported in the head box 1, and the delay unit 5a does not shift in the vertical direction (and the horizontal direction).

As described above, the delay unit 5a and the cord support device 5 of the first embodiment are modified so as to support the delay unit 5a inside the support case 50 of the cord support device 5 as in the fifth embodiment. However, if one drive shaft 11 enables the rotation of the tilt drum 51 and the take-up shaft 52 and a tilt operation without raising and lowering the slats 4 is desired, the bottom rail 8 moves up and down by the tilt operation. It is possible to solve the problem of getting rid of. In particular, when the bottom rail 8 is not in the lower limit position, it is possible to solve the problem that the slat convolution portion rises and then tilts during the tilt operation.

Therefore, the delay unit 5a according to the present invention is a device for the cord support device 5 that enables the operation of raising and lowering and tilting the slats 4 by one drive shaft 11, and one drive shaft 11 is the center of the rotation shaft. On the outside or inside of the support case 50 that rotatably supports the tilt drum 51 and the take-up shaft 52, the take-up shaft 52 is interlocked with the rotation of the tilt drum 51 by a predetermined delay amount. It is installed side by side on the drive shaft 11.

In particular, the cord support device 5 of the present invention has an output shaft portion (shaft portion 561 of the output shaft member 56) that interlocks and rotates the rotation of the drive shaft 11 with a predetermined delay amount, and the output shaft portion is wound around the winding shaft 52. The delay unit 5a is arranged so as to be directly or indirectly connected to the bearing portion of the above.

The horizontal blind according to the present invention operates the slats 4 by winding or rewinding the elevating cord 10 by a plurality of winding shafts 52 constituting the cord winding device based on the rotation of one drive shaft 11. The rudder cord 9 is suspended from a plurality of tilt drums 51 (or the tilt drum 51a of the ladder cord support member 6) and rotated based on the rotation of the drive shaft 11, and the slats 4 supported by the ladder cord 9 are rotated. When the slat 4 reverses after the slat 4 is lifted and lowered, the rotation of the drive shaft 11 is transmitted to the tilt drum 51 (or 51a), and the take-up shaft 52 during the angle adjustment of the slat 4 is transmitted. In the head box 1 in which the drive shaft 11 and the take-up shaft 52 are configured to interlock and rotate after a predetermined relative rotation, and the cord take-up device and the tilt drum 51 (or 51a) are housed. On the other hand, braking means (case members 55a, 55b, brake spring 57, and spring case 58 in the delay unit 5a) that are non-rotatably supported are provided separately from the cord winding device, and the winding shaft during angle adjustment of the slats 4 is provided. It was configured to prevent the rotation of 52.

As a result, the rotation of the tilt drum 51 and the take-up shaft 52 can be operated by one drive shaft 11, and when a tilt operation without raising and lowering the slats 4 is desired, the bottom rail 8 is moved up and down by the tilt operation. It is possible to solve the problem of getting rid of. In particular, when the bottom rail 8 is not in the lower limit position, it solves the problem that the slat convolution part rises and then tilts during the tilt operation, improves the assembling property, reduces the size, versatility, and reduces the burden of parts management. , And it is excellent in practicality that contributes to cost reduction.

In the delay unit 5a of the first to fifth embodiments according to the present invention described above, the support case of the cord support unit 5b that rotatably supports the tilt drum 51 and the take-up shaft 52 with one drive shaft 11 as the center of the rotation shaft. A delay according to the present invention is provided by arranging the take-up shaft 52 in parallel on the drive shaft 11 so as to rotate in conjunction with the rotation of the tilt drum 51 by a predetermined delay amount on the outside or the inside of the 50. An example of configuring the cord support device 5 by arranging the units 5a in parallel with the cord support unit 5b has been described.

However, when the delay unit 5a is installed outside or inside the support case 50, it is not always necessary to arrange the delay unit 5a and the cord support unit 5b side by side on the drive shaft 11, for example, a gear mechanism. The take-up shaft 52 is interlocked with the rotation of the tilt drum 51 by a predetermined delay amount by using a transmission mechanism such as a belt mechanism or a belt mechanism, and the delay unit 5a is placed outside the axis of the drive shaft 11 as a cord support unit. It can be installed for 5b. Hereinafter, as a typical example thereof, a schematic configuration of the cord support device 5 having the delay unit 5a of the sixth embodiment will be described with reference to FIG. 22.

(Example 6)
FIG. 22 is a perspective view showing a schematic configuration of a cord support device 5 with respect to the delay unit 5a according to the sixth embodiment of the present invention.

In the cord support device 5 shown in FIG. 22, the take-up shaft 52 is predetermined with respect to the rotation of the tilt drum 51 via a transmission mechanism (in this example, transmission gears 102, 103, 112, 113 constituting the gear mechanism). The delay unit 5a supported by the upper case 101 is supported by the lower case 111 and is installed outside the cord support unit 5b.

The cord support unit 5b shown in FIG. 22 has the same structure as that of the first embodiment shown in FIG. 4 described above as an example in which the delay unit 5a is installed outside the cord support unit 5b. There is no need to limit it. That is, the cord support unit 5b may be of another embodiment as shown in FIG. 9, FIG. 11, or FIG. 20 described above, and further, it is not necessary to be limited to the shapes of these embodiments. The cord support unit 5b having the same function as that of the above embodiment may be appropriately shaped to conform to the present embodiment.

In the cord support unit 5b shown in FIG. 22, the support case 50 rotatably supports the tilt drum 51 and the take-up shaft 52 with the drive shaft 11 as a rotation shaft. The ladder cord 9 (see FIG. 1) to be hung from the tilt drum 51 and the elevating cord 10 (see FIG. 1) to be hung from the take-up shaft 52 are provided on the bottom surface of the support case 50. It is derived from the outlet 50a.

Further, an obstacle detection / stopping device 53 is provided on the tip end side of the take-up shaft 52 to prevent the take-up shaft 52 supporting the elevating cord 10 from rotating when tension in the pull-out direction does not act on the elevating cord 10. However, this obstacle detection / stopping device 53 is also supported by the support case 50 as a non-connection (non-engagement) with respect to the drive shaft 11. The case body of the obstacle detection / stopping device 53 is fixed to the tip end side of the take-up shaft 52, but the tubular camshaft 531 housed in the case body of the obstacle detection / stopping device 53 is being lowered by the slats 4. When the bottom rail 8 collides with an obstacle, the necessary play (that is, the amount of rotation that prevents the rotation of the take-up shaft 52) is provided so as to stop the rewinding of the elevating cord 10 and stop the descent of the slat 4 and the bottom rail 8. Therefore, it can rotate integrally with the rotation of the take-up shaft 52.

Then, the delay unit 5a can have the same configuration as each of the embodiments illustrated in FIGS. 3, 8, 12, 13, 13, 18, 19 and the like described above. In the delay unit 5a exemplified in FIG. 22, the case members 55a and 55b illustrated in FIG. 12 are reshaped so as to be supported by the upper case 101 shown in FIG. 22 (particularly, a shape that does not require the claw portion 558). It has a shape and structure that functions in the same way except for the points. That is, the delay unit 5a exemplified in FIG. 22 is composed of an output shaft member 56, a brake spring 57, a spring case 58, a rotation relay plate 59, an input shaft member 60, and case members 55a and 55b. (See FIG. 12).

A transmission gear 102 that rotates integrally with the input shaft member 60 is engaged in the shaft hole 602 of the input shaft member 60 in the delay unit 5a, and the shaft portion 102a of the transmission gear 102 rotates with respect to the upper case 101. Supported as possible. In this example, an example is shown in which a square bar-shaped support shaft 102b is inserted and engaged so that the input shaft member 60 and the transmission gear 102 are engaged so as to rotate integrally. It is also possible to configure the input shaft member 60 and the transmission gear 102 as an integral member in advance without using such a support shaft 102b.

A transmission gear 103 that rotates integrally with the output shaft member 56 is engaged with the shaft portion 561 of the output shaft member 56 in the delay unit 5a, and the shaft portion 103a of the transmission gear 103 rotates with respect to the upper case 101. Supported as possible. The output shaft member 56 and the transmission gear 103 can be configured as an integral member in advance.

The case members 55a and 55b of the delay unit 5a are supported so as not to rotate relative to the upper case 101. In the example shown in FIG. 22, in order to enhance the understanding of the structure, the case members 55a and 55b of the delay unit 5a and the upper case 101 are described as separate members, but they may be integrated.

In this way, the delay unit 5a has a transmission gear 102 on the input shaft member 60 side and a transmission gear 103 on the output shaft member 56 side, and is supported by the upper case 101.

On the other hand, on the drive shaft 11 inserted into the cord support unit 5b, the transmission gear 112 is provided so as not to rotate relative to the drive shaft 11, and the shaft portion 112a of the transmission gear 112 is rotatably supported with respect to the lower case 111. To. That is, the drive shaft 11 is inserted into and engaged with the shaft hole 112b of the transmission gear 112 so as not to rotate relative to each other, and when the drive shaft 11 rotates, the transmission gear 112 also rotates.

Further, the transmission gear 113 is housed in the lower case 111 so as to be rotatable (idle) relative to the drive shaft 11. That is, the drive shaft 11 is inserted into the shaft hole 113b of the transmission gear 113 so as to be relatively rotatable (idle). Further, the outer hexagonal tubular shaft portion 113a of the transmission gear 113 can be integrally rotatably engaged with the tubular camshaft 531 having the hexagonal shaft hole 531a of the obstacle detection stop device 53. There is. That is, the outer hexagonal tubular shaft portion 113a of the transmission gear 113 can be integrally rotatably fitted into the hexagonal shaft hole 531a of the obstacle detection / stopping device 53.

Then, when the upper case 101 supporting the delay unit 5a is attached from above the lower case 111 (white arrows in the figure), that is, the lower case 101a is formed at the four corners of the upper case 101. When the top portions 111a of the support pieces that stand upright at the four corners of the case 111 are attached (engaged and mounted in this example) and fixed, the transmission gear 112 becomes the transmission gear 102 on the input shaft member 60 side in the delay unit 5a. The transmission gear 113 meshes with the transmission gear 103 on the output shaft member 56 side of the delay unit 5a.

The lower case 111 and the cord support unit 5b may be placed in the head box 1 without rattling, and the shapes and fixing methods of the upper case 101 and the lower case 111 are placed in the head box 1 without rattling. The shape can be suitable for.

In this way, the delay unit 5a is supported in a state where the shaft portion 113a of the transmission gear 113 is integrally rotatably fitted in the shaft hole 531a of the camshaft 531 in the obstacle detection stop device 53 in the cord support unit 5b. The upper case 101 can be attached from above the lower case 111.

In the state where the upper case 101 is attached to the lower case 111 in this way, the rotation of the drive shaft 11 is first transmitted to the input shaft member 60 in the delay unit 5a via the transmission gears 112 and 102 (arrow TR1 in the figure). The rotation of the input shaft member 60 is transmitted to the output shaft member 56 in the delay unit 5a with a predetermined delay amount (arrow TR2 in the figure), and the rotation of the output shaft member 56 is transmitted to the transmission gear 113 via the transmission gear 103. (Arrow TR3 in the figure), the rotation of the transmission gear 113 is transmitted to the camshaft 531 of the obstacle detection stop device 53.

As a result, the rotation of the tilt drum 51 and the take-up shaft 52 can be operated by one drive shaft 11, and when a tilt operation without raising and lowering the slats 4 is desired, the bottom rail 8 is moved up and down by the tilt operation. It is possible to solve the problem of getting rid of.

Further, in this embodiment, since the delay unit 5a can be installed with respect to the cord support unit 5b by attaching the upper case 101 to the lower case 111, the alignment as shown in FIG. 17 described above is further simplified. can do.

Further, in this embodiment, the reduction ratio related to the rotation transmission in the transmission gears 112, 102 or the transmission gears 103, 113 can be adjusted, and for example, the operation load related to the rotation of the drive shaft 11 can be reduced.

Although an example of engaging the shaft portion 113a of the transmission gear 113 with the camshaft 531 of the obstacle detection / stopping device 53 in a hexagonal shape has been described, the engagement shape has more sides from the viewpoint of improving the assembling property. It is preferable to use the above method, which can be assembled with a slight rotation operation, and the assembling property is improved.

Further, in this embodiment as well, an example of engaging the shaft portion 113a of the transmission gear 113 with the cam shaft 531 of the obstacle detection / stopping device 53 has been described, but the take-up shaft 52 does not go through the obstacle detection / stopping device 53. Even in the case of engaging with, the action / effect according to the present invention can be exhibited.

Although the present invention has been described above with reference to examples of specific embodiments, the present invention is not limited to the examples of the above-described embodiments, and can be variously modified without departing from the technical idea. For example, in the example of the above-described embodiment, the example via the obstacle detection / stopping device 53 has been mainly described, but the present invention is not limited to this, and the winding shaft 52 is directly or indirectly engaged with the winding shaft 52. If so, the action / effect according to the present invention can be exerted.

Further, in the example of the above-described embodiment, an example in which the delay unit 5a is used properly for each type of the cord support unit 5b is mainly described. For example, the cord support unit 5b shown in FIG. 7 is compared with the second embodiment. Instead of applying the delay unit 5a, a rotary relay plate 59 that does not cause a delay amount is prepared and applied to the delay unit 5a of the first embodiment, and the same delay amount as when the delay unit 5a of the second embodiment is applied is applied. It can also be configured to obtain, and in this case, the case members 55a and 55b can be shared.

(Horizontal bride with a cord support device for suspending a ladder cord with an annular upper end)
Next, with reference to FIG. 23, a horizontal blind provided with the cord support device 5L, 5M, 5R according to the present invention will be described.

First, in the horizontal blind shown in FIG. 23, the cord support devices 5L, 5M, and 5R according to the present invention are arranged in the head box 1 on the left end side, the center side, and the right end side of the head box 1, respectively.

Each cord support device 5L, 5M, 5R suspends and supports a multi-stage slats 4 via a pair of string-shaped ladder cords 9 hanging on the indoor side and the outdoor side, respectively, and the respective ladder cords 9 are supported. A bottom rail 8 is suspended and supported at the lower end. The head box 1 is fixed to the mounting surface on the ceiling side via the bracket 7.

Further, from each cord support device 5L, 5M, 5R, a string-shaped elevating cord 10 hangs down at a substantially central portion in the front-rear direction on the lower surface of the head box 1, and the lower end of the elevating cord 10 is approximately in the front-rear direction of each slat 4. It is attached to the bottom rail 8 through an insertion hole (not shown) provided in the central portion. The hanging position of the elevating cord 10 may be along the end portion of each slat 4 in the front-rear direction.

That is, each cord support device 5L, 5M, 5R in this example can wind or rewind the tilt drum 51 for suspending a pair of ladder cords 9 hanging on the indoor side and the outdoor side, and the elevating cord 10. A long cylindrical winding shaft 52 having an inclination is arranged side by side on a square rod-shaped drive shaft 11 and supported by a support case 50. Further, an obstacle detection / stopping device 53 is provided on the tip end side of the take-up shaft 52.

In particular, in each of the cord support devices 5L, 5M, 5R of this example, the ladder cord 9 is suspended by hanging the ladder cord 9 on the tilt drum 51 with the upper end portions of the pair of ladder cords 9 hanging on the indoor side and the outdoor side in an annular shape. The slats 4 supported by the wefts of the ladder cord 9 are rotated by the rotation of the tilt drum 51. Further, the uppermost slat 4 is provided with a slat retainer 12 for holding the slat 4 supported by the weft of the ladder cord 9. The slat retainer 12 guides the hanging of the pair of ladder cords 9 hanging on the indoor side and the outdoor side, and holds the weft of the ladder cord 9 supporting the uppermost slat 4 together with the slat 4. It is hung from below. The slat retainer 12 is provided with a notch or an insertion hole so as not to hinder the movement of the elevating cord 10 (not shown).

Therefore, although the details will be described later, the upper ends of the pair of ladder cords 9 hanging from the indoor side and the outdoor side are connected so as to form an annular upper end portion, and the tilt drum 51 has a predetermined frictional force. It has a V-shaped groove for hooking the upper end portion of the annular shape.

Here, in each of the cord support devices 5L, 5M, 5R shown in FIG. 23, the delay unit 5a shown in FIG. 2 and the like described above is not provided, and the tilt drum 51 and the take-up shaft 52 rotate relative to the drive shaft 11. Unable to be linked.

However, each cord support device 5L, 5M, 5R has the same configuration as the cord support device 5 shown in FIG. 2 described above, and while the tilt drum 51 is non-rotatably connected to the drive shaft 11, the take-up shaft A delay unit 5a may be provided in which the 52 is not connected (non-engaged) to the drive shaft 11 and the take-up shaft 52 is operated to rotate in conjunction with the rotation of the tilt drum 51 by a predetermined delay amount. ..

Further, in this example, an example in which three cord support devices are provided in the horizontal blind as the cord support devices 5L, 5M, and 5R is shown, but the configuration is such that two cord support devices are provided, and four or more cords are provided. It can be configured to provide a support device. The cord support device according to the present invention, which will be described later, has a V-shaped groove for hooking a pair of ladder cords 9 hanging on the indoor side and the outdoor side, respectively, such as the ladder cord support member 6 shown in FIG. It can also be configured as a device for supporting the tilt drum 51a.

An operation unit 2 is provided on the right end side of the head box 1. The operation unit 2 has a pulley (not shown) on which an endless string-shaped operation code 3 (or an endless ball chain may be used) can be hooked if it is a manual type shown in the figure, and is outside the head box 1. The operation code 3 is derived toward the direction, and the drive shaft 11 can be rotated.

Alternatively, when the operation unit 2 is electric, it can be an electric motor that can rotate the drive shaft 11 based on an operation signal from the outside. Therefore, the form of the operation unit 2 can be any form as long as it can transmit to the rotation of the drive shaft 11 according to the operation by the operator.

Therefore, in the horizontal blind shown in FIG. 23, the operation code 3 is operated to rotate the drive shaft 11, and the tilt drum 51 in each code support device 5L, 5M, 5R is rotated with the rotation of the drive shaft 11. As a result, a tilt operation for adjusting the angle of the slats 4 is possible. When the drive shaft 11 is rotated more than the rotation required for the tilt operation, the slat 4 can be raised or lowered while maintaining the rotated state of the slat 4 by the tilt operation.

Hereinafter, more specifically, the structure and operation of the cord support device 5M as a representative of the code support devices 5L, 5M, and 5R will be related to the conventional technique and the present invention mainly from the viewpoint of the code distribution of the ladder code 9. Techniques (Examples 1 to 4) will be described in order.

(Cord distribution of ladder code based on conventional technique)
FIG. 24 (a) shows a partial front view around the cord support device 5M for suspending the ladder cord 9 having one annular upper end portion based on the conventional technique, and FIG. 24 (b) shows a partial front view. A side view (the description of the elevating cord 10 is omitted) around the cord support device 5M relating to the ladder cord 9 having the upper end portion of the one annular shape is shown.

First, as shown in FIG. 24 (a), the cord support device 5M mounted in the head box 1 is tilted with the take-up shaft 52 (shown in a non-cross-sectional view) so as not to rotate relative to the drive shaft 11. A drum 51 (shown in a cross-sectional view) is provided and is supported by a support case 50, respectively. The take-up shaft 52 has a long cylindrical shape having an inclination that allows the upper end of the elevating cord 10 to be attached and wound or rewound, and the lower end of the elevating cord 10 is, for example, each. It is attached to the bottom rail 8 through an insertion hole (not shown) provided at a substantially central portion in the front-rear direction of the slats 4 (see FIG. 23).

The multi-stage slats 4 are supported by one or two wefts 9a provided at predetermined intervals between a pair of ladder cords 9 hanging on the indoor side and the outdoor side. Further, the uppermost slat 4 is provided with a slat retainer 12 for holding the slat 4 supported by the weft 9a of the ladder cord 9.

Then, as shown in FIG. 24 (b), the upper ends 91F and 91R of the pair of ladder cords 9 hanging on the indoor side and the outdoor side, respectively, are engaged to form one annular upper end portion based on the conventional technique. It is connected by a stop member (for example, a caulked metal member) 13. In the example shown in FIG. 24 (b), the locking member 13 is arranged so as to be located above the slat 4 within a range that does not hinder the rotation of the slat 4.

As shown in FIG. 24A, the tilt drum 51 has a V-shaped groove 51V whose width becomes narrower toward the central axis of the tilt drum 51, and the groove bottom 51b of the V-shaped groove 51V is a ladder cord. It has a width narrower than the cross-sectional diameter of 9. The normal ladder code 9 has a substantially square cross-sectional shape having a long side and a short side instead of a perfect round cross section, but the groove bottom 51b has a width narrower than the short side.

That is, the tilt drum 51 is adapted to hook the upper end portion of the annular shape of the ladder code 9 with a predetermined frictional force by the V-shaped groove 51V.

As described above, the cord support device 5M including the tilt drum 51 configured to hook the upper end portion of the one annular shape of the ladder cord 9 with a predetermined frictional force by the V-shaped groove 51V is the drive shaft 11. The rotation of the tilt drum 51 accompanying the rotation makes it possible to rotate the multi-stage slats 4 supported by the weft 9a of the ladder cord 9.

In particular, the tilt drum 51 configured to suspend the ladder cord 9 by the V-shaped groove 51V is compared with the tilt drum 51 configured to suspend the ladder cord 9 by the suspending member 511 as shown in FIG. 7 described above. It is advantageous in that the load related to the rotation operation of the drive shaft 11 by the operation code 3 can be significantly reduced.

That is, as shown in FIG. 7, in the configuration in which the ladder cord 9 is suspended by the suspension member 511, the suspension member 511 is composed of a torsion coil spring, and both ends of the torsion coil spring are bent to form a loop. A ladder cord attachment portion 511a and a locking end portion 511b are formed. The upper ends of the pair of front and rear ladder cords 9 are attached to the ladder cord attachment portion 511a and are suspended and supported. Then, the hanging member 511 is attached by tightening the tilt drum 51, and is integrally rotated with the tilt drum 51 until the locking end portion 511b abuts on the wall portion formed in the support case 50, and is locked. When the end portion 511b comes into contact with the wall portion formed on the support case 50, the tightening force is weakened and the end portion 511b slips with respect to the tilt drum 51. As a result, the angles of the slats 4 can be adjusted in the same phase via the ladder code 9 based on the rotation of the tilt drum 51. However, since the operation code 3 at this time receives a load corresponding to a force that weakens the tightening force of the hanging member 511, from the viewpoint of reducing the operating force, the V-shaped groove 51V as shown in FIG. 2 is used. It is advantageous to use a tilt drum 51 configured to suspend the ladder cord 9.

However, as the form of the horizontal blind, the slats 4 have various lengths and widths, and the number of stages of the slats 4 is also various, so that the load related to the ladder code 9 is also various. Therefore, as one form of the horizontal blind, the frictional resistance to the rudder cord 9 generated by the V-shaped groove 51V becomes insufficient, and the operating force in the operation code 3 is reduced, but the rudder slides greatly on the V-shaped groove 51V. The code 9 will be transferred, which may deteriorate the operability. In order to improve this, it is possible to change the shape of the V-shaped groove 51V for each form of the horizontal blind, but a technique that makes it easier to change or adjust the frictional resistance is desired.

Further, in the technique of separately providing a friction member for the ladder code 9, the contact / non-contact state of the friction member changes due to the rotation of the tilt drum 51. The contact with the slats 4 may be insufficient, resulting in poor rotation of the slats 4.

Therefore, in the cord support device 5M according to the present invention, the upper end of a plurality of annular rudder cords 9 has a predetermined frictional force on the outer peripheral surface (V-shaped groove 51V in this example) formed in the tilt drum 51. The ladder cord 9 follows the rotation of the tilt drum 51 to rotate the slats 4, and the cord support devices 5M of Examples 1 to 4 will be described below.

(Cord Support Device of Example 1)
FIG. 25 (a) shows a partial side view around the cord support device 5M of the first embodiment according to the present invention, and FIG. 25 (b) is a schematic diagram of the cord distribution. Note that FIG. 25 (a) is shown so as to be able to be compared with FIG. 24 (b), and the take-up shaft 52 and the elevating cord 10 are not shown. It should be noted that the device may be provided with only the tilt drum 51 without providing the take-up shaft 52.

As shown in FIGS. 25 (a) and 25 (b), the cord support device 5M mounted in the head box 1 is provided with a tilt drum 51 so as not to rotate relative to the drive shaft 11, and the tilt drum 51 is provided. It is supported by the support case 50.

The multi-stage slats 4 are supported by one or two wefts 9a provided at predetermined intervals between a pair of ladder cords 9 hanging on the indoor side and the outdoor side. Further, the uppermost slat 4 is provided with a slat retainer 12 for holding the slat 4 supported by the weft 9a of the ladder cord 9.

The tilt drum 51 shown in FIGS. 25 (a) and 25 (b) has a V-shaped groove 51V whose width becomes narrower toward the central axis of the tilt drum 51, similar to that shown in FIG. 24 (a). The groove bottom 51b of the V-shaped groove 51V has a width narrower than the cross-sectional diameter of the ladder cord 9. The normal ladder code 9 has a substantially square cross-sectional shape having a long side and a short side instead of a perfect round cross section, but the groove bottom 51b has a width narrower than the short side.

Then, as shown in FIG. 25B, the upper end 91F of the ladder cord 9 hanging down to the indoor side is hooked from the indoor side to the V-shaped groove 51V of the tilt drum 51, and then a locking member (for example, caulking metal). The member) 13a is locked to the ladder cord 9 hanging outside the room. On the other hand, the upper end 91R of the ladder cord 9 hanging from the outdoor side is hung from the outdoor side in the V-shaped groove 51V of the tilt drum 51, and then the ladder hanging from the outdoor side to the indoor side by a locking member (for example, a caulking metal member) 13b. Locked to code 9. In the example shown in FIGS. 25 (a) and 25 (b), the locking members 13a and 13b are arranged so as to be located above the slat 4 within a range that does not hinder the rotation of the slat 4, but the locking member 13a , 13b may be formed so as to be located below the slat 4 within a range that does not hinder the rotation of the slat 4.

As a result, the ladder cord 9 having the upper ends of the two annular rings is mounted on the V-shaped groove 51V, and the rotation of the tilt drum 51 causes the ladder cord 9 to follow and rotate the slats 4. Can be increased.

When forming the upper ends of the two annular rings, either the code distribution of the ladder code 9 from the indoor side or the code distribution of the ladder code 9 from the outdoor side is designated as the upper side (or the lower side). However, the slat 4 is locked by the locking members 13a and 13b so as not to be twisted in the rotation range. Since the normal ladder cord 9 has a substantially square cross-sectional shape having a long side and a short side, the surfaces of the ladder cord 9 are aligned so as not to be twisted when forming the upper ends of the two annular rings. It may be locked by the stopping members 13a and 13b.

(Cord Support Device of Example 2)
FIG. 26 (a) shows a partial side view around the cord support device 5M of the second embodiment according to the present invention, and FIG. 26 (b) is a schematic diagram of the cord distribution. Note that FIG. 26A is shown so as to be able to be compared with FIG. 24B, and the take-up shaft 52 and the elevating cord 10 are not shown. It should be noted that the device may be provided with only the tilt drum 51 without providing the take-up shaft 52.

As shown in FIGS. 26 (a) and 26 (b), the cord support device 5M mounted in the head box 1 is provided with a tilt drum 51 so as not to rotate relative to the drive shaft 11, and the tilt drum 51 is provided. It is supported by the support case 50.

The multi-stage slats 4 are supported by one or two wefts 9a provided at predetermined intervals between a pair of ladder cords 9 hanging on the indoor side and the outdoor side. Further, the uppermost slat 4 is provided with a slat retainer 12 for holding the slat 4 supported by the weft 9a of the ladder cord 9.

The tilt drum 51 shown in FIGS. 26 (a) and 26 (b) has a V-shaped groove 51V whose width becomes narrower toward the central axis of the tilt drum 51, similar to that shown in FIG. 24 (a). The groove bottom 51b of the V-shaped groove 51V has a width narrower than the cross-sectional diameter of the ladder cord 9. The normal ladder code 9 has a substantially square cross-sectional shape having a long side and a short side instead of a perfect round cross section, but the groove bottom 51b has a width narrower than the short side.

Then, as shown in FIG. 26B, the upper end 91F of the ladder cord 9 hanging down to the indoor side is hooked from the indoor side to the V-shaped groove 51V of the tilt drum 51, and then a locking member (for example, caulking metal). The member) 13 is locked to the ladder cord 9 hanging outside the room. On the other hand, the upper end 91R of the ladder cord 9 hanging from the outdoor side is hung from the outdoor side in the V-shaped groove 51V of the tilt drum 51, and then distributed along the weft 9a at the uppermost stage, and the above-mentioned locking member ( For example, the caulking metal member) 13 is locked to the ladder cord 9 hanging to the outside of the room together with the upper end 91F. In the example shown in FIGS. 26 (a) and 26 (b), the locking member 13 is arranged so as to be located above the slat 4 within a range that does not hinder the rotation of the slat 4, but the locking member 13 is slat. It may be formed so as to be located below the slat 4 within a range that does not interfere with the rotation of the slat 4.

As a result, the ladder cord 9 having the upper ends of the two annular rings is mounted on the V-shaped groove 51V, and the rotation of the tilt drum 51 causes the ladder cord 9 to follow and rotate the slats 4. Can be increased.

Further, in the second embodiment shown in FIG. 26, since the locking member 13 is located on the outdoor side as compared with the first embodiment shown in FIG. 25, the frictional resistance can be increased without impairing the design. can.

Also in this example, when forming the upper end portions of the two annular rings, either the upper side (or lower side) of the code distribution of the ladder code 9 from the indoor side and the code distribution of the ladder code 9 from the outdoor side Although it may be on the side), it is locked by the locking member 13 so as not to be twisted in the rotation range of the slat 4. Since the normal ladder code 9 has a substantially square cross-sectional shape having a long side and a short side, the faces of the ladder code 9 are aligned so as not to be twisted when forming the upper ends of the two annular rings. It may be locked by the stop member 13.

(Cord Support Device of Example 3)
FIG. 27 (a) shows a partial side view around the cord support device 5M of the third embodiment according to the present invention, and FIG. 27 (b) is a schematic diagram of the cord distribution. Note that FIG. 27 (a) is shown so as to be able to be compared with FIG. 24 (b), and the take-up shaft 52 and the elevating cord 10 are not shown. It should be noted that the device may be provided with only the tilt drum 51 without providing the take-up shaft 52.

As shown in FIGS. 27 (a) and 27 (b), the cord support device 5M mounted in the head box 1 is provided with a tilt drum 51 that cannot rotate relative to the drive shaft 11, and the tilt drum 51 is provided. It is supported by the support case 50.

The multi-stage slats 4 are supported by one or two wefts 9a provided at predetermined intervals between a pair of ladder cords 9 hanging on the indoor side and the outdoor side. Further, the uppermost slat 4 is provided with a slat retainer 12 for holding the slat 4 supported by the weft 9a of the ladder cord 9.

The tilt drum 51 shown in FIGS. 27 (a) and 27 (b) has a V-shaped groove 51V whose width becomes narrower toward the central axis of the tilt drum 51, similar to that shown in FIG. 24 (a). The groove bottom 51b of the V-shaped groove 51V has a width narrower than the cross-sectional diameter of the ladder cord 9. The normal ladder code 9 has a substantially square cross-sectional shape having a long side and a short side instead of a perfect round cross section, but the groove bottom 51b has a width narrower than the short side.

Then, as shown in FIG. 27B, the upper end 91F of the ladder cord 9 hanging down to the indoor side is hooked from the indoor side to the V-shaped groove 51V of the tilt drum 51, and then a locking member (for example, caulking metal). The member) 13a is locked to the ladder cord 9 hanging outside the room. On the other hand, the upper end 91R of the ladder cord 9 hanging from the outdoor side is hung from the outdoor side in the V-shaped groove 51V of the tilt drum 51, and then distributed along the weft 9a at the uppermost stage, and further another locking member. (For example, a caulked metal member) 13b is locked to a ladder cord 9 hanging on the outdoor side. In the example shown in FIGS. 27 (a) and 27 (b), the two locking members 13a and 13b are arranged so as to be located above and below the slat 4 within a range that does not interfere with the rotation of the slat 4. However, the two locking members 13a and 13b may be formed so as to be located below (or above) the slat 4 within a range that does not hinder the rotation of the slat 4.

As a result, the ladder cord 9 having the upper ends of the two annular rings is mounted on the V-shaped groove 51V, and the rotation of the tilt drum 51 causes the ladder cord 9 to follow and rotate the slats 4. Can be increased.

Further, in the third embodiment shown in FIG. 27, since the locking members 13a and 13b are both located on the outdoor side as compared with the first embodiment shown in FIG. 25, the same as in the second embodiment shown in FIG. 26. The frictional resistance can be increased without impairing the design.

Further, in the second embodiment shown in FIG. 26 described above, the three ladder cords 9 are locked by the locking member 13, which may increase the workability burden, but the third embodiment shown in FIG. 27. Then, since the number of cords locked by the individual locking members 13a and 13b can be set to 2, the burden on workability can be reduced.

Also in this example, when forming the upper ends of the two annular rings, either the upper side (or lower side) of the code distribution of the ladder code 9 from the indoor side and the code distribution of the ladder code 9 from the outdoor side Although it may be on the side), it is locked by two locking members 13a and 13b so as not to be twisted in the rotation range of the slat 4. Since the normal ladder code 9 has a substantially square cross-sectional shape having a long side and a short side, the surfaces of the ladder code 9 are aligned so as not to be twisted when forming the upper ends of the two annular rings. It may be locked by the locking members 13a and 13b at the location.

(Cord Support Device of Example 4)
FIG. 28 (a) shows a partial side view around the cord support device 5M of Example 4 according to the present invention, and FIG. 28 (b) is a schematic diagram of the cord distribution. It should be noted that FIG. 28 (a) is shown so as to be able to be compared with FIG. 24 (b), and the take-up shaft 52 and the elevating cord 10 are not shown. It should be noted that the device may be provided with only the tilt drum 51 without providing the take-up shaft 52.

As shown in FIGS. 28 (a) and 28 (b), the cord support device 5M mounted in the head box 1 is provided with a tilt drum 51 that cannot rotate relative to the drive shaft 11, and the tilt drum 51 is provided. It is supported by the support case 50.

The multi-stage slats 4 are supported by one or two wefts 9a provided at predetermined intervals between a pair of ladder cords 9 hanging on the indoor side and the outdoor side. Further, the uppermost slat 4 is provided with a slat retainer 12 for holding the slat 4 supported by the weft 9a of the ladder cord 9.

The tilt drum 51 shown in FIGS. 28 (a) and 28 (b) has a V-shaped groove 51V whose width becomes narrower toward the central axis of the tilt drum 51, similar to that shown in FIG. 24 (a). The groove bottom 51b of the V-shaped groove 51V has a width narrower than the cross-sectional diameter of the ladder cord 9. The normal ladder code 9 has a substantially square cross-sectional shape having a long side and a short side instead of a perfect round cross section, but the groove bottom 51b has a width narrower than the short side.

Then, as shown in FIG. 28B, the upper end 91F of the ladder code 9 hanging down to the indoor side is the uppermost stage after the first hooking is performed on the V-shaped groove 51V of the tilt drum 51 from the indoor side. It is distributed along the weft 9a of the above, and the V-shaped groove 51V is hooked again for the second time, and then it is locked to the ladder cord 9 hanging outward by a locking member (for example, a caulking metal member) 13b. To. On the other hand, the upper end 91R of the ladder cord 9 hanging on the outdoor side is still another locking member with respect to the cord portion when the ladder cord 9 hanging on the indoor side is first hooked on the V-shaped groove 51V. It is locked by (for example, a caulked metal member) 13a.

As a result, the ladder cord 9 having the upper ends of the two annular rings is mounted on the V-shaped groove 51V, and the rotation of the tilt drum 51 causes the ladder cord 9 to follow and rotate the slats 4. Can be increased.

Further, in the fourth embodiment shown in FIG. 28, since the locking members 13a and 13b are both located on the outdoor side as compared with the first embodiment shown in FIG. 25, the second embodiment shown in FIGS. 26 and 27. Similar to No. 3, the frictional resistance can be increased without impairing the design.

Further, in the second embodiment shown in FIG. 26 described above, the three ladder cords 9 are locked by the locking member 13, which may increase the workability burden, but the fourth embodiment shown in FIG. 28. Then, since the number of cords locked by the individual locking members 13a and 13b can be set to 2, the burden on workability can be reduced.

Also in this example, when forming the upper end portions of the two annular rings, whichever of the ladder cords 9 may be distributed from the indoor side to the upper side (or the lower side), the rotation range of the slats 4 may be set. It is locked by two locking members 13a and 13b so that it will not be twisted.

Although the present invention has been described above with reference to FIGS. 25 to 28 with reference to specific examples, the present invention is not limited to the above-mentioned examples and can be variously modified without departing from the technical idea. .. For example, in the above-described embodiment, an example in which the code distribution shown in FIGS. 25 to 28 is applied mainly to the code support device 5M located at the center in the left-right direction in the horizontal blind shown in FIG. 23 is described. However, the code distribution shown in FIG. 27 can be applied to all of the code support devices 5L, 5R, and 5M.

However, the code distribution shown in FIGS. 25 to 28 may be applied only to the code support device 5M, and the code distribution shown in FIG. 24B may be applied to the other code support devices 5L and 5R. Alternatively, the code distribution shown in FIGS. 25 to 28 may be applied only to the code support devices 5L and 5R, and the code distribution shown in FIG. 24 (b) may be applied to the code support device 5M. That is, the cord distribution shown in FIGS. 25 to 28 is applied in a well-balanced manner in the left-right direction, including the case where a larger number of cord support devices are provided. This makes it possible to change or adjust the frictional resistance of the hanging for a wide variety of horizontal blinds.

Further, by appropriately combining the cord support devices of the first to fourth embodiments with respect to FIGS. 25 to 28, it becomes possible to further change or adjust the frictional resistance related to the hanging for a wide variety of horizontal blinds.

Further, in the example of the cord support device of Examples 1 to 4 shown in FIGS. 25 to 28 described above, two annular upper ends are formed with respect to the pair of ladder cords 9 on the indoor side and the outdoor side to form a V-shape. Although an example of hanging on the groove 51V has been described, a form in which three or more annular upper ends are formed and hooked on the V-shaped groove 51V may be used.

Further, in the above-mentioned example, an example in which the pair of ladder cords 9 on the indoor side and the outdoor side are locked by the locking member 13 (or 13a, 13b) in order to form a plurality of annular upper ends has been described. It can be locked by any locking means such as adhesion, welding, and sewing.

Further, in the above-mentioned example, a specific shape having a substantially square cross-sectional shape as the cross-sectional shape of the ladder code 9 and a V-shaped groove 51V as the outer peripheral surface of the tilt drum 51 has been described as an example, but it is necessary to limit the cross-sectional shape to this. However, the outer peripheral surface of the ladder cord 9 having an arbitrary cross-sectional shape and the tilt drum 51 having an arbitrary shape to which the rudder cord 9 has an arbitrary cross-sectional shape can be used as long as the shape generates a predetermined frictional force.

According to the present invention, since the delay unit and the cord support device can be configured in a highly practical manner, it is useful for the use of a horizontal blind that enables the operation of raising / lowering / tilting the slats with one drive shaft.

Further, according to the present invention, with respect to a cord support device provided with a tilt drum configured to hang the upper end of the annular shape of the ladder cord, the frictional resistance related to the hanging is changed or adjusted for a wide variety of horizontal blinds. This is useful for horizontal blind applications where the frictional resistance needs to be changed or adjusted.

1 Headbox 4 Slats 5, 5L, 5M, 5R Cord support device 5a Delay unit 5b Cord support unit 6 Ladder cord support member 8 Bottom rail 9 Ladder code 10 Elevating cord 11 Drive shaft 12 Slat retainer 13, 13a, 13b Locking member 50 Support case 51, 51a Tilt drum 52 Winding shaft 53 Obstacle detection stop device 55a, 55b Case member 56 Output shaft member 57 Brake spring 58 Spring case 59 Rotation relay plate 60 Input shaft member 70 Support auxiliary member

Claims (22)

It is a delay unit of a cord support device that enables the operation of raising and lowering and tilting the slats with one drive shaft.
It is installed on the outside or inside of a support case that rotatably supports the tilt drum and the take-up shaft with one drive shaft as the center of the rotation shaft, and the take-up shaft has a predetermined delay with respect to the rotation of the tilt drum. It is configured to rotate in conjunction with the amount,
The input shaft member directly connected to the drive shaft and
An output shaft member having a shaft portion that transmits rotation so that the rotation of the input shaft member is interlocked and rotated with a predetermined delay amount and engaged with the input shaft member with a play of a predetermined rotation angle.
A braking member that suppresses rotation of the output shaft member other than rotation due to rotation transmission from the input shaft member, and
A case member accommodating the input shaft member, the output shaft member, and the braking member, and
A delay unit characterized by being equipped with. A cord support device comprising the delay unit according to claim 1. A cord support device that enables the operation of raising and lowering and tilting the slats with a single drive shaft.
A tilt drum that is directly connected to the drive shaft with one drive shaft as the center of the rotation shaft,
A take-up shaft that is not directly connected to the drive shaft,
With the delay unit
2. The cord support device according to claim 2, wherein the cord support device is provided. The cord support device according to claim 2 or 3, wherein the delay unit is configured to associate a rotation transmission portion that causes the predetermined delay amount in the axial direction of the drive shaft. The cord support device according to claim 2 or 3, wherein the delay unit is configured to associate a rotation transmission portion that causes the predetermined delay amount in a direction perpendicular to the drive shaft. The braking member is
A coiled brake spring having a pair of ends engaged with a part of the output shaft member while allowing rotational transmission from the input shaft member to the output shaft member.
A spring case that accommodates the brake spring with a reduced diameter and is locked to the case member of the delay unit.
The cord support device according to any one of claims 2 to 5, wherein the cord support device is provided. A rotary relay plate that rotates and relays with a predetermined delay amount is further provided between the input shaft member and the output shaft member, and the delay amount due to the engagement between the input shaft member and the output shaft member can be changed. The cord support device according to any one of claims 2 to 6, characterized in that. The cord support device according to any one of claims 2 to 7, wherein the case member of the delay unit is formed by fitting a plurality of members in a direction perpendicular to the drive shaft. The cord support device according to any one of claims 2 to 8, wherein the delay unit is arranged so as to be connected to the bearing portion of the take-up shaft via an obstacle detection / stopping device. .. The cord support device according to any one of claims 2 to 9, wherein the rotation amount that causes the delay amount by the delay unit is set to be equal to or larger than the angle adjustment range of the slats. One of claims 2 to 10, wherein the case member of the delay unit has a claw portion that grips the support case of the cord support device or the support auxiliary member of the take-up shaft. The cord support device described in. One of claims 2 to 8, wherein the shaft portion of the output shaft member of the delay unit has a locking means for directly or indirectly connecting to the bearing portion of the take-up shaft. The cord support device described in the section. A horizontal blind comprising the cord support device according to any one of claims 2 to 12. Based on the rotation of one drive shaft, the slat can be lifted and lowered by winding or rewinding the lifting cord by multiple winding shafts constituting the cord winding device, and the ladder cord is suspended from multiple tilt drums. A horizontal blind that can be rotated based on the rotation of the drive shaft to adjust the angle of the slats supported by the ladder cord.
The delay unit according to claim 1 is provided, and the delay unit is provided.
When the slats are inverted after the slats are lifted and lowered, the delay unit transmits the rotation of the drive shaft to the tilt drum and prevents the rotation of the take-up shaft during the angle adjustment of the slats, so that the drive shaft and the drive shaft are rotated. Braking composed of the braking member and the case member, which are configured so that the take-up shaft and the take-up shaft rotate in conjunction with each other after a predetermined relative rotation and are non-rotatably supported by the head box accommodating the cord take-up device and the tilt drum. A horizontal blind characterized in that the means is provided separately from the cord winding device and is configured to prevent the rotation of the winding shaft during the angle adjustment of the slats. Based on the rotation of one drive shaft, the slat can be lifted and lowered by winding or rewinding the lifting cord by multiple winding shafts constituting the cord winding device, and the ladder cord is suspended from multiple tilt drums. A horizontal blind that can be rotated based on the rotation of the drive shaft to adjust the angle of the slats supported by the ladder cord.
The delay unit according to claim 1 is provided with a plurality of delay units.
Each of the plurality of delay units is installed on each of the plurality of winding shafts so that the winding shaft rotates in conjunction with the rotation of the tilt drum by a predetermined delay amount.
Each of the plurality of delay units has a shape that can be inserted from the opening provided on the upper surface of the headbox without deformation of the headbox when assembled to the headbox accommodating the take-up shaft and the tilt drum. Horizontal blinds characterized by having. Based on the rotation of one drive shaft, the slat can be lifted and lowered by winding or rewinding the lifting cord by multiple winding shafts constituting the cord winding device, and the ladder cord is suspended from multiple tilt drums. A horizontal blind that can be rotated based on the rotation of the drive shaft to adjust the angle of the slats supported by the ladder cord.
The delay unit according to claim 1 is provided with a plurality of delay units.
Each of the plurality of delay units is installed on each of the plurality of winding shafts so that the winding shaft rotates in conjunction with the rotation of the tilt drum by a predetermined delay amount.
The upper surface of the headbox accommodating the take-up shaft and the tilt drum is opened in the front-rear direction with a first length, and the inside of the headbox is accommodating a second length larger than the first length. Have space,
Each of the plurality of delay units is inserted from the upper surface of the head box opened at the first length at the time of assembly to the head box, and is installed on each of the plurality of winding shafts to be connected. A horizontal blind having a shape in which deviations in the front-rear direction and the up-down direction with respect to the headbox are suppressed in the accommodation space of the second length in the headbox when rotated so as to face each other. Based on the rotation of one drive shaft, the slat can be lifted and lowered by winding or rewinding the lifting cord by multiple winding shafts constituting the cord winding device, and the ladder cord is suspended from multiple tilt drums. A horizontal blind that can be rotated based on the rotation of the drive shaft to adjust the angle of the slats supported by the ladder cord.
The delay unit according to claim 1 is provided with a plurality of delay units.
Each of the plurality of delay units is installed on each of the plurality of winding shafts so that the winding shaft rotates in conjunction with the rotation of the tilt drum by a predetermined delay amount.
Each of the plurality of delay units has a drive shaft of the plurality of delay units, the plurality of take-up shafts, and the plurality of tilt drums when the drive shaft is assembled to the take-up shaft and the head box accommodating the tilt drum. After being randomly inserted into the center of the shaft, each of the plurality of delay units can be initialized by randomly rotating the drive shaft by a predetermined number of rotations or more, and the lifting cord can be attached to all the winding shafts. It was separated from the plurality of take-up shafts so that the alignment with respect to the position was possible, and after the alignment, the delay units were connected and installed by sliding in the left-right direction in the headbox. A characteristic horizontal blind. A horizontal blind that allows the slats to rotate by following the ladder cord by rotating the tilt drum.
The cord support device according to any one of claims 3 to 12 is provided.
The tilt drum included in the cord support device forms a plurality of annular upper ends for a pair of ladder cords on the indoor side and the outdoor side, and is applied to the outer peripheral surface formed on the tilt drum with a predetermined frictional force. A horizontal blind characterized by being configured to dress. The upper end of the ladder cord hanging from the indoor side is hooked on the outer peripheral surface of the tilt drum from the indoor side, and then locked to the ladder cord hanging from the outdoor side.
18. The upper end of the ladder cord hanging from the outdoor side is hooked to the outer peripheral surface of the tilt drum from the outdoor side and then locked to the ladder cord hanging from the indoor side. Horizontal blinds described in. The upper end of the ladder cord hanging from the indoor side is hooked on the outer peripheral surface of the tilt drum from the indoor side, and then locked to the ladder cord hanging from the outdoor side.
The upper end of the ladder cord hanging from the outdoor side is hung from the outdoor side on the outer peripheral surface of the tilt drum, and then distributed along the uppermost weft provided between the pair of ladder cords to the outdoor side. The horizontal blind according to claim 18, characterized in that it is locked to a hanging ladder cord. The upper end of the ladder cord hanging on the indoor side is arranged along the uppermost weft provided between the pair of ladder cords after the first hooking is performed on the outer peripheral surface of the tilt drum from the indoor side. It is turned, and the outer peripheral surface is hung again for the second time, and then it is locked to the ladder cord hanging on the outdoor side.
18. The upper end of the ladder cord hanging to the outside of the room is locked to the cord portion when the ladder code hanging to the inside of the room is first hooked. Horizontal blinds described in. The horizontal blind according to claim 20, wherein the locking portion at each upper end of the pair of ladder cords on the indoor side and the outdoor side is provided on the outdoor side.

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