WO2017199883A1

WO2017199883A1 - Delay unit, cord support device, and horizontal blind

Info

Publication number: WO2017199883A1
Application number: PCT/JP2017/018070
Authority: WO
Inventors: 慶弘 ▲高▼山; 佐藤　潤一
Original assignee: 立川ブラインド工業株式会社
Priority date: 2016-05-17
Filing date: 2017-05-12
Publication date: 2017-11-23
Also published as: JP6998130B2; CN109154179A; AU2017265683A1; JP2018009440A; EP3460168A4; EP3460168A1; CN109154179B; TW201742979A; BR112018073680A2; AU2017265683B2

Abstract

Provided are: a delay unit for a cord support member which is embodied in a highly practical manner to enable the operation of lifting, lowering, and tilting slats to be performed by a single drive shaft; a cord support device for the delay unit; and a horizontal blind provided with the delay unit and the cord support device. Also provided is a horizontal blind wherein frictional resistance relating to winding of ladder cords about a tilt drum is appropriate. The delay units 5a of the invention are arranged side by side on a single drive shaft 11 at positions outside or inside a support case 50 for supporting a tilt drum 51 and a winding shaft 52 so that the tilt drum 51 and the winding shaft 52 can rotate about the drive shaft 11, the delay units 5a being mounted so as to be rotatable in a coordinated manner with predetermined amount of delay relative to the rotation of the tilt drum 51. This cord support device 5 is configured such that a delay unit 5a is disposed so as to be directly or indirectly connected to the bearing section of the winding shaft 52. This horizontal blind is provided with a cord support device comprising a tilt drum configured such that the annular upper ends of a plurality of ladder cords are wound about the tilt drum.

Description

Delay unit, cord support device, and horizontal blind

The present invention relates to a delay unit of a cord support member that allows a slat to be moved up and down and tilted by a single drive shaft, the cord support device thereof, and a horizontal blind including these.

The horizontal blind can adjust the amount of solar radiation that is taken into the room by raising and lowering or tilting multiple slats supported by a ladder cord suspended from the head box using the lifting cord. .

For example, the bottom rail is arranged at the lower end of the ladder cord, and the bottom rail is moved up and down by pulling the lifting cord attached to the bottom rail into the head box and pulling it out from the head box. Slats can be raised and lowered.

By the way, as one type of horizontal blind, a cord that can be operated to rotate a tilt drum that suspends and supports a ladder cord with a single drive shaft, and a winding shaft that suspends and supports a lifting cord so that it can be wound or unwound. Those using a support member are generally known.

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

Accordingly, a technique is disclosed in which the tilt drum and the winding shaft are engaged with each other by providing play on the cord support member, and the rotation of the winding shaft is delayed with respect to the rotation of the tilt drum (for example, Patent Document 1).

More specifically, in the cord support member (mechanism housing box) in the technique of Patent Document 1, the tilt drum (turning drum) is directly connected to rotate with the rotation of the drive shaft, and a shaft member (bush) is newly provided. Secure to the cord support member. A brake drum and a clutch ring are provided at one end of the shaft member, and are disposed between the tilt drum and the winding shaft (elevating drum). The take-up shaft is engaged with the periphery of the cylindrical portion of the shaft member protruding from the brake drum so as to be able to rotate freely, and is engaged with the tilt drum and the respective protrusions so as to rotate together with a play of 180 degrees. . Therefore, since the winding shaft is not directly connected to the drive shaft, a certain amount of play is provided in the rotation of the winding shaft with respect to the rotation of the tilt drum so that the rotation of the winding shaft can be delayed. Yes.

As one form of the cord support device, the ladder cord is hung on the tilt drum with the upper end of the ladder cord being annular, and the slat supported by the weft thread of the ladder cord is rotated by the rotation of the tilt drum. There is something to move. In this form of the 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 annular upper end portion of the ladder cord. For this reason, the technique which provides a friction member in a part of the said cyclic | annular upper end part of a ladder cord is known (for example, refer patent document 2).

Japanese Patent Laid-Open No. 3-161685 Japanese Utility Model Publication No. 39-12438

As described above, in the case of a general cord support member that allows the rotation of the tilt drum and the winding shaft to be operated by one drive shaft, even if a tilt operation without raising or lowering the slat is desired, the bottom rail can be operated by the tilt operation. When the bottom rail is not at the lower limit position, the slat convolution part rises during the tilting operation and tilts, causing problems from the viewpoint of operability.

On the other hand, the technique of Patent Document 1 can solve the problem. However, the technique of Patent Document 1 uses a tilt drum and a winding shaft to delay the rotation of the winding shaft with respect to the rotation of the tilt drum. Are configured to engage with each other by providing play. For this reason, for example, when installing a plurality of cord support members in the head box, the tilt drum and the winding are used for positioning the cord support member with respect to one drive shaft (slat angle adjustment, cord length adjustment, etc.). It is anticipated 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 head box.

Moreover, in the technique of patent document 1, since it is the structure which attaches a winding shaft with respect to the cylinder part periphery of the said shaft member so that idling is possible, size reduction becomes difficult and the whole code | cord | chord support member will enlarge in diameter. As a result, there is a 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 a configuration of 180 degrees as a delay angle is disclosed. However, to apply to applications other than 180 degrees, at least a tilt drum, a winding shaft, and a clutch ring are used. The shape needs to be changed, and a cord support member in which the shape of the tilt drum, the winding shaft, and the clutch ring is changed must be prepared for each use of the horizontal blind, resulting in an increase in cost.

Also, in the technique of Patent Document 1, the entire cord support member is replaced when it is desired to adjust or change the delay angle during assembly. Therefore, there is a concern about an increase in parts management burden.

Accordingly, the rotation of the tilt drum and the winding shaft of the slat can be operated with one drive shaft, and when the tilt operation without raising and lowering the slat is desired, the bottom rail is raised and lowered by the tilt operation. In addition, when the bottom rail is not at the lower limit position, it solves the problem of tilting after the slat convolution part rises during tilt operation, and also improves assembly, miniaturization, versatility, and reduction of parts management burden In addition, a technique with excellent practicality that contributes to cost reduction is desired.

In addition, the ladder cord is suspended by hanging the upper end portion of the ladder cord on the tilt drum, and the slat supported by the weft of the ladder cord is rotated by the rotation of the tilt drum. Among them, in the technique of providing a friction member on the ladder cord as in Patent Document 2, the friction member changes its contact / non-contact state by the rotation of the tilt drum. It is assumed that the contact with the drum becomes insufficient, and the rotation failure of the slat occurs.

In view of the above problems, an object of the present invention is to provide a delay unit for a cord support member that allows the slats to be moved up and down and tilted by a single drive shaft in a practical manner. It is in providing a horizontal blind provided with these.

Another object of the present invention is to provide a horizontal blind that is adapted to the frictional resistance of the cord support device including a tilt drum configured to hang the annular upper end portion of the ladder cord. is there.

A delay unit according to the present invention is a delay unit of a cord support device that allows a slat to be moved up and down and tilted by one drive shaft, and includes a tilt drum and a winding shaft with one drive shaft as a rotation axis. The take-up shaft is juxtaposed on the drive shaft so that the take-up shaft rotates in a predetermined delay amount with respect to the rotation of the tilt drum on the outer side or the inner side of the support case that is rotatably supported. And

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 allows the slats to be moved up and down and tilted by one drive shaft, and the tilt is directly connected to the drive shaft with the one drive shaft as the center of the rotation axis. A drum, a winding shaft that is not directly connected to the drive shaft, and an output shaft portion that rotates the drive shaft in a linked manner with a predetermined delay amount. The output shaft portion is a bearing portion of the winding shaft. And a delay unit arranged to be connected directly or indirectly to the delay unit.

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

In the cord support device of the present invention, the delay unit may transmit the rotation of the input shaft member directly connected to the drive shaft and the rotation of the input shaft member so as to rotate together with the predetermined delay amount. An output shaft member having a shaft portion and engaged with the input shaft member with play of a predetermined rotation angle, and braking for suppressing rotation of the output shaft member other than rotation by rotation transmission from the input shaft member And a case member that houses the input shaft member, the output shaft member, and the braking member.

In the cord support device of the present invention, the brake member has 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. And a spring case that is received by reducing the diameter of the brake spring and is engaged with the case member of the delay unit.

Further, in the cord support device of the present invention, the cord support device further includes a rotation relay plate that rotates and relays with a predetermined delay amount between the input shaft member and the output shaft member, and the input shaft member and the output shaft member 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 formed by fitting a plurality of members in a direction perpendicular to the drive shaft.

Further, in the cord support device of the present invention, the delay unit is arranged to be connected to the bearing portion of the winding shaft via an obstacle detection / stop device.

In the cord support device of the present invention, the amount of rotation that causes the delay amount by the delay unit is set to be equal to or greater than the angle adjustment range of the slat.

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

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

Also, the horizontal blind according to the present invention is characterized by including the cord support device according to the present invention.

Furthermore, the horizontal blind according to the present invention enables the slats to be lifted or lowered by winding or unwinding 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 a tilt drum and rotates it based on the rotation of the drive shaft so that the angle of the slat supported by the ladder cord can be adjusted. When the rotation is reversed, the rotation of the drive shaft is transmitted to the tilt drum, and the rotation of the winding shaft during the adjustment of the angle of the slat is prevented, and the driving shaft and the winding shaft rotate together after a predetermined relative rotation. The cord winding device includes a braking means configured to be supported in a non-rotatable manner with respect to the head box that accommodates the cord winding device and the tilt drum. It is provided separately, and characterized by being configured to prevent rotation of the winding shaft in the angular adjustment of the slats.

Furthermore, the horizontal blind according to the present invention enables the slats to be lifted or lowered by winding or unwinding 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 the ladder cord from the tilt drum and rotates it based on the rotation of the drive shaft so that the angle of the slat supported by the ladder cord can be adjusted. A plurality of delay units arranged in parallel with the plurality of winding shafts on the drive shaft so as to rotate in conjunction with a predetermined delay amount with respect to the rotation of the drum, and accommodate the winding shaft and the tilt drum An upper surface of the head box is opened at a first length in the front-rear direction, and the interior of the head box has an accommodation space with a second length larger than the first length, Each of the plurality of delay units is inserted from the upper surface of the head box opened at the first length when assembled to the head box, and the plurality of winding shafts to be coupled on the drive shaft When the head box is rotated so as to face each other in the direction of being arranged side by side, it has a shape that suppresses the displacement in the front-rear direction and the up-down direction with respect to the head box in the second-length accommodation space in the head box. Features.

Furthermore, the horizontal blind according to the present invention enables the slats to be lifted or lowered by winding or unwinding 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 the ladder cord from the tilt drum and rotates it based on the rotation of the drive shaft so that the angle of the slat supported by the ladder cord can be adjusted. A plurality of delay units arranged in parallel with the plurality of winding shafts on the drive shaft so as to rotate in conjunction with a predetermined delay amount with respect to the rotation of the drum, and accommodate the winding shaft and the tilt drum An upper surface of the head box is opened at a first length in the front-rear direction, and the interior of the head box has an accommodation space with a second length larger than the first length, Each of the plurality of delay units is inserted from the upper surface of the head box opened at the first length when assembled to the head box, and the plurality of winding shafts to be coupled on the drive shaft When the head box is rotated so as to face each other in the direction of being arranged side by side, the head space has a shape that suppresses the displacement in the front-rear direction and the vertical direction with respect to the head box in the second-length accommodation space. Features.

Furthermore, the horizontal blind according to the present invention enables the slats to be lifted or lowered by winding or unwinding 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 the ladder cord from the tilt drum and rotates it based on the rotation of the drive shaft so that the angle of the slat supported by the ladder cord can be adjusted. A plurality of delay units arranged in parallel with the plurality of winding shafts on the drive shaft so as to interlock and rotate with a predetermined delay amount with respect to the rotation of the drum, and each of the plurality of delay units includes: At the time of assembling the take-up shaft and the head box that houses the tilt drum, the drive shaft serves as the plurality of delay units, the plurality of take-up shafts, and the plurality of tilted shafts. Each of the plurality of delay units can be initialized by rotating the drive shaft at random more than a predetermined number of rotations after being randomly inserted into the center of the shaft. The plurality of winding shafts are separated so that alignment with respect to the attachment position is possible, and after the alignment, the delay units in the head box are connected in parallel by sliding in the left-right direction. It is characterized by that.

Furthermore, the horizontal blind according to another aspect of the present invention is a horizontal blind that allows the slats to be rotated by following the ladder code by rotating the tilt drum, and a plurality of ring-shaped blinds are paired on the indoor side and the outdoor side. And a cord support device configured to be hung with a predetermined frictional force on an outer peripheral surface formed on the tilt drum.

In the horizontal blind according to another aspect of the present invention, the upper end of the ladder cord that hangs down to the indoor side is engaged with the ladder cord that hangs from the indoor side to the outer peripheral surface of the tilt drum and then hangs down to the outdoor side. The upper end of the ladder cord that hangs down to the outside of the room is hooked on the outer peripheral surface of the tilt drum from the outside of the room, and is then locked to the ladder cord that hangs down to the inside of the room.

In the horizontal blind according to another aspect of the present invention, the upper end of the ladder cord that hangs down to the indoor side is engaged with the ladder cord that hangs from the indoor side to the outer peripheral surface of the tilt drum and then hangs down to the outdoor side. The upper end of the ladder cord that hangs down to the outside of the room is hooked on the outer peripheral surface of the tilt drum from the outside of the room, and is then distributed along the uppermost weft provided between the pair of ladder cords. It is locked to a ladder cord that hangs outward.

Further, in the horizontal blind according to another aspect of the present invention, the upper end of the ladder cord hanging down to the indoor side is applied to the outer peripheral surface of the tilt drum from the indoor side, and then the pair of ladder cords Ladder that is routed along the uppermost weft provided in between, and is again hooked on the outer peripheral surface, and then locked to a ladder cord that hangs down to the outside of the room, and hangs down to the outside of the room The upper end of the cord is locked to the cord portion when the ladder cord that hangs down to the indoor side is applied for the first time.

Moreover, in the horizontal blind according to another aspect of the present invention, the upper end of the pair of ladder cords on the indoor side and the outdoor side is provided on the outdoor side.

According to the present invention, the rotation of the tilt drum and the take-up shaft can be operated by one drive shaft, and when the tilt operation without raising / lowering the slat is desired, the bottom rail moves up and down by the tilt operation. In particular, when the bottom rail is not the lower limit position, the problem that the slat convolution part rises during tilt operation and then tilts is improved. It is excellent in practicality that contributes to versatility, reduction of parts management burden, and cost reduction.

According to the present invention, with respect to a cord support device including a tilt drum configured to hook an annular upper end portion of a ladder cord, it is possible to change or adjust the frictional resistance related to the hook with respect to a wide variety of horizontal blinds. Become.

It is a front view which shows schematic structure of the horizontal blind of one Embodiment by this invention. (A), (b) is the perspective view and sectional drawing which respectively show schematic structure of the cord support apparatus which has the delay unit of Example 1 by this invention. It is a disassembled perspective view which shows schematic structure of the delay unit of Example 1 by this invention. It is a perspective view explaining the assembly | attachment method of the cord support apparatus which has a delay unit of Example 1 by this invention. (A), (b), (c) is a figure explaining the operation | movement regarding the delay unit of Example 1 by this invention, respectively. (A), (b), (c) is a schematic side view explaining the operation | movement of the horizontal blind regarding the delay unit of Example 1 by this invention, respectively. (A), (b) is the perspective view and sectional drawing which respectively show schematic structure of the cord support apparatus which has a delay unit of Example 2 by this invention. It is a disassembled perspective view which shows schematic structure of the delay unit of Example 2 by this invention. It is a perspective view explaining the assembly | attachment method of the cord support apparatus which has a delay unit of Example 2 by this invention. (A), (b) is the perspective view and sectional drawing which show schematic structure of the cord support apparatus of the other example which has the delay unit of Example 2 by this invention, respectively. It is a perspective view explaining the assembly | attachment method of the other code | cord support apparatus which has a delay unit of Example 2 by this invention. It is a disassembled perspective view which shows schematic structure of the delay unit of Example 3 by this invention. It is a disassembled perspective view which shows schematic structure of the delay unit of Example 4 by this invention. (A), (b) is the figure explaining the operation | movement regarding the delay unit of Example 3 by this invention, respectively, (c) is a figure explaining the operation | movement regarding the delay unit of Example 4 by this invention. It is a top view which shows the structure which concerns on the assembly in the head box regarding the delay unit of one Example by this invention. (A), (2) is a top view explaining the assembly method in the head box regarding the delay unit of one Example by this invention, respectively. (A), (b), (c) is a top view explaining the assembly method in the head box regarding the some delay unit of one Example by this invention, respectively. FIGS. 4A and 4B are perspective views showing examples of a connection structure for an obstacle detection and stop device in a cord support device related to a delay unit according to an embodiment of the present invention. It is a disassembled perspective view which shows schematic structure of the delay unit of Example 5 by this invention. It is a perspective view explaining the assembly | attachment method of the code | cord | chord support apparatus of the modification which has a delay unit of Example 5 by this invention. It is a perspective view which shows schematic structure of the code | cord | chord support apparatus of the modification which has a delay unit of Example 5 by this invention. It is a front view which shows schematic structure of the horizontal blind of one Embodiment provided with the cord support apparatus which suspends the ladder code | cord | chord with the cyclic | annular upper end part by this invention. (A), ridge (b) is a partial front view and side view of the periphery of a cord support device that suspends a ladder cord having an annular upper end having one annular upper end based on the conventional technique. . (A), ridge (b) is a partial side view of the periphery of the cord support device according to the first embodiment of the present invention and a schematic view of the cord arrangement. (A), ridge (b) is a partial side view of the periphery of the cord support device according to the second embodiment of the present invention and a schematic view of the cord arrangement. (A), ridge (b) is a partial side view of the periphery of the cord support device of the third embodiment according to the present invention and a schematic view of the cord arrangement. (A), ridge (b) is a partial side view of the periphery of the cord support device according to the fourth embodiment of the present invention and a schematic view of the cord arrangement.

Hereinafter, with reference to the drawings, an example of a horizontal blind that allows a slat ascending / descending operation by a lifting / lowering cord and a slat tilting operation by a ladder cord by rotation of one drive shaft will be described. In addition, in the present specification, with respect to the front view of the horizontal blind shown in FIG. 1, the upper and lower directions in the drawing are the upper direction (or upper side) and the lower direction (or lower side), respectively, according to the hanging direction of the slats. 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. Moreover, when the side which visually recognizes the front view of FIG. 1 is the front side (indoor side) and the opposite side is the rear side (or outdoor side), and is referred to as the front-rear direction of the horizontal blind, it is illustrated in the front view of FIG. The direction perpendicular to the surface.

(Configuration of horizontal blind)
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 in which a delay unit 5 a according to the present invention is arranged in parallel with a cord support unit 5 b is provided in the head box 1, and a ladder is provided on the right end portion side in the head box 1. A cord support member 6 is provided. 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 ladder cord support members 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 slats 4 via a pair of string-like ladder cords 9 hanging down on the indoor side and the outdoor side, respectively. The bottom rail 8 is suspended and supported at the lower end of the frame. The head box 1 is fixed to a ceiling-side mounting surface via a bracket 7.

Further, a string-like lifting / lowering cord 10 is suspended 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 lifting / lowering 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).

For this reason, the cord support unit 5b can wind up or rewind the tilt drum 51 having the V-shaped groove for hanging the pair of ladder cords 9 hanging down on the indoor side and the outdoor side, and the elevating cord 10, respectively. An elongated cylindrical take-up shaft 52 having an inclination is arranged side by side on the square rod-like drive shaft 11 and supported by the support case 50.

In this example, an obstacle detection stop device 53 is provided on the front end side of the winding shaft 52. The obstacle detection and stop device 53 is a device for preventing the winding shaft 52 that supports the lifting / lowering cord 10 from rotating when the tension in the pulling direction is not applied to the lifting / lowering cord 10. When 8 collides with an obstacle, the rewinding of the lifting / lowering cord 10 is stopped, the descent of the slat 4 and the bottom rail 8 is stopped, and the reverse winding of the lifting / lowering cord 10 is prevented.

In particular, as will be described in detail later, in the cord support device 5 having the delay unit 5a according to the first embodiment, the tilt drum 51 is connected to the drive shaft 11 so as not to be relatively rotatable, whereas the winding shaft 52 is connected to the drive shaft. 11, the cord support unit 5 b supported by the support case 50 so as not to be connected (disengaged) with respect to the motor 11, and operates so that the winding shaft 52 rotates in conjunction with the rotation of the tilt drum 51 with a predetermined delay amount. The delay unit 5a to be operated is juxtaposed on the drive shaft 11 with respect to the cord support unit 5b.

Note that the ladder cord support member 6 is simply a device that supports the tilt drum 51a having a V-shaped groove on which a pair of ladder cords 9 hanging respectively on the indoor side and the outdoor side are hung.

An operation unit 2 is provided on the right end side in the head box 1. The operation unit 2 has a pulley (not shown) on which an endless string-like operation cord 3 (or an endless ball chain) can be hooked if it is a manual type shown in the figure, and is removed from the head box 1. The operation code 3 is led out to enable the drive shaft 11 to be rotated.

Alternatively, when the operation unit 2 is an electric type, an electric motor that can rotate the drive shaft 11 based on an operation signal from the outside can be used. Accordingly, the operation unit 2 can be in any form as long as it can be transmitted to the rotation of the drive shaft 11 in accordance with an operation by the operator.

Therefore, the horizontal blind shown in FIG. 1 operates the operation cord 3 to rotate the drive shaft 11 and the tilt drum 51 in the cord support device 5 and the tilt in the ladder cord support member 6 as the drive shaft 11 rotates. By rotating the drum 51a, a tilt operation for adjusting the angle of the slat 4 is possible. When the drive shaft 11 is rotated more than the rotation required for the tilt operation, the winding unit 52 in the cord support device 5 causes a predetermined delay amount from the rotation of the tilt drum 51 during the tilt operation by the action of the delay unit 5a. The slat 4 can be moved up and down to move up and down.

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

Example 1
FIGS. 2A and 2B are a perspective view and a cross-sectional view showing a schematic configuration of the cord support device 5 having the delay unit 5a according to the first embodiment of the present invention. 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. FIG. 4 is a perspective view for explaining a method of assembling the cord support device 5 having the delay unit 5a according to the first embodiment of the present invention.

The code support device 5 shown in FIG. 2A is configured by arranging a delay unit 5a in parallel with the code support unit 5b. The cord support unit 5b supports the tilt drum 51 and the take-up shaft 52 in a rotatable manner by the support case 50 with the drive shaft 11 as a rotation axis. The ladder cord 9 (see FIG. 1) to be suspended from the tilt drum 51 and the lifting / lowering cord 10 (see FIG. 1) to be suspended from the take-up shaft 52 are provided on the bottom surface of the support case 50. Derived from the outlet 50a.

2 (b), the 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 so as not to be connected (not engaged) to the drive shaft 11. In addition, an obstacle detection stop device 53 is provided on the leading end side of the winding shaft 52 to prevent the winding shaft 52 that supports the lifting / lowering cord 10 from rotating when tension in the pulling direction does not act on the lifting / lowering cord 10. However, the obstacle detection and stop device 53 is also supported by the support case 50 so as not to be connected (not engaged) to the drive shaft 11. The case main body of the obstacle detection / stop device 53 is fixed to the distal end side of the take-up shaft 52, but the cylindrical cam shaft 531 accommodated in the case main body of the obstacle detection / stop device 53 is moved down the slat 4. When the bottom rail 8 collides with an obstacle, a play necessary to stop the rewinding of the lifting / lowering cord 10 and stop the descent of the slat 4 and the bottom rail 8 (that is, a rotation amount for preventing the winding shaft 52 from rotating). And can rotate integrally with the rotation of the winding shaft 52.

As shown in FIG. 3, the delay unit 5a arranged in parallel 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. 60 and

case members

55a and 55b.

The output shaft member 56 protrudes through an outer hexagonal cylindrical shaft portion 561 and a flange 567 in which a cylindrical shaft portion 568 is formed on the proximal end side (drive transmission input side) of the shaft portion 561. A projecting portion 564 that projects toward the drive transmission input side within a range of a predetermined angle (angle α1 described later) from the center of the shaft 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 supported so as to be relatively rotatable by a circular opening 559c and an 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 protruding portion 564 are formed so as to protrude in a continuous shape, but the cylindrical shaft 562 and the protruding portion 564 may be protruded individually. A recessed area excluding the protruding portion 564 on the outer periphery of the cylindrical shaft 562 is formed as an engagement receiving portion 563 that becomes a movable area of a protruding piece 592 of the rotation relay plate 59 described later. The shaft portion 561 and the cylindrical shaft 562 are formed with shaft holes 565 into which the drive shaft 11 can be inserted without being engaged. The outer hexagonal cylindrical shaft portion 561 is engageable with the cylindrical cam shaft 531 having the hexagonal shaft hole 531a of the obstacle detection and stop device 53 so as to be integrally rotatable (FIG. 4). The rotation of the output shaft member 56 can be transmitted so as to rotate in synchronization with the cam shaft 531 of the obstacle detection and stop device 53 (see FIG. 2B).

The brake spring 57 and the spring case 58 function 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. More specifically, a predetermined braking force is applied to the rotation of the output shaft member 56 transmitted from the cam shaft 531 of the obstacle detection / stop device 53. That is, the braking member composed of 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 slat 4 and the bottom rail 8 from dropping their weight.

In order to stably maintain the raising / lowering position of the slat 4, the pair of end portions 571 of the coiled brake spring 57 is provided with an output shaft so that the winding shaft 52 is not moved except during the raising / lowering operation. The protrusions 564 of the member 56 are fitted so as to engage with both sides. The spring case 58 accommodates the coiled brake spring 57 in a reduced diameter state, so that the brake spring 57 can always rotate relative to the spring case 58 by pressing the inner peripheral surface of the spring case 58. However, a predetermined braking force is activated. On the other hand, in the spring case 58, a pair of recesses 582 provided in a part thereof are non-rotatably locked by projections 557 provided in each of the

case members

55a and 55b, and each of the

case members

55a and 55b is accommodated. The spring case 58 is fixed so as not to rotate because it is fitted to the portion 556.

The rotation relay plate 59 is formed of a substantially cylindrical member having an outer shape substantially the same as the diameter of the brake spring 57 housed in a reduced diameter in the spring case 58, 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 in a non-engagement manner. The rotation relay plate 59 is generally formed of a cylindrical member. More specifically, the rotation relay plate 59 has a predetermined angle (an angle α2 to be described later) on the front end surface of the rotation relay plate 59 at a position near the periphery of the rotation relay plate 59. A protruding piece 592 that protrudes within the range is provided. In a state where the distal end surface of the rotation relay plate 59 is disposed so as to be in contact with the base end surface of the output shaft member 56 through the inside of the brake spring 57 (see FIG. 2B), the rotation relay plate 59 is connected to the case member. It accommodates in each accommodating part 555 of 55a, 55b so that relative rotation is possible. Therefore, the protrusion piece 592 on the front end surface side of the rotation relay plate 59 can be relatively rotated within the range of the engagement receiving portion 563 in the recessed area excluding the protrusion portion 564 of the output shaft member 56, that is, the rotation relay. Even if the plate 59 rotates, the rotation is not transmitted to the output shaft member 56 until the protruding piece 592 comes into contact with the protruding portion 564 of the output shaft member 56 via the end 571 of the brake spring 57. After the contact, the rotation of the rotation relay plate 59 is transmitted to the output shaft member 56.

Further, on the base end surface of the rotation relay plate 59, a groove-like 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 in a range of a predetermined angle (an angle α3 described later) from the axial center of the shaft hole 591. In this example, the groove-shaped engagement receiving portion 593 is formed so as to form the rotation receiving portion 594. However, the groove-shaped engagement receiving portion 593 may not be formed as long as the same function is applied.

The input shaft member 60 has a cylindrical shaft portion 601 having a substantially square hole 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. Thus, a protruding piece 603 protruding alongside the shaft portion 601 is formed through a flange 604 in which a cylindrical shaft portion 606 is formed. With the drive transmission output side surface of the flange 604 of the input shaft member 60 disposed so as to be able to contact the drive transmission input side surface of the rotation relay plate 59 (see FIG. 2B), the shaft portion 606 of the input shaft member 60 and The flange 604 is supported by the circular opening 559d and the accommodating portion 555 at the end portions on the drive transmission input side of the

case members

55a and 55b, respectively, so as to be relatively rotatable. The shaft portion 601 can support the shaft hole 565 of the output shaft member 56 and the shaft hole 591 of the rotation relay plate 59.

Therefore, the protruding piece 603 of the input shaft member 60 can be relatively rotated 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 is rotated. Even so, the rotation is not transmitted to the rotation relay plate 59 until the protruding piece 603 comes into contact with the rotation receiving portion 594 of the rotation relay plate 59. However, 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, the delay unit 5 a according to the first embodiment is configured so that the amount of delay 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 transmitted to the output shaft member 56. And a delay amount obtained by adding up the delay amounts between the output shaft member 56 and the output shaft member 56.

For example, as shown in FIG. 5A, the amount of delay between the rotation relay plate 59 and the output shaft member 56 is a protrusion 564 protruding in the range of the angle α1 and a protrusion piece 592 protruding in the range of the angle α2. And the delay amount 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 such that the rotation receiving portion 594 in the range of the angle α3 and the protruding piece 603 protruding in the range of the angle α4. , The delay amount 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 slat 4, and the rotation relay plate 59 rotates and relays with a predetermined delay amount. It functions as a delay adjustment member.

Of the constituent members of the delay unit 5a of the first embodiment, only the input shaft member 60 is connected directly to the drive shaft 11 and the delay unit 5a of the first embodiment is arranged on the drive shaft 11 side by side. It is possible to perform the interlocking rotation with a predetermined delay amount relative to the rotation of the tilt drum 51 with respect to the rotation of the winding shaft 52 via the obstacle detection / stop device 53 (FIGS. 4 and 2B). reference).

In particular, as shown in FIG. 4, the claw portions 558 that are gripped by the protrusions 50b provided on the support case 50 of the cord support unit 5b are driven in the

case portions

55a and 55b of the delay unit 5a of the first embodiment. Each is formed on the side wall portion on the transmission output side. As a result, the delay unit 5a according to 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 cam shaft 531 of the obstacle detection and stop device 53 and is connected so as to be integrally rotatable. If an excessive load is applied to the rotation of the drive shaft 11 in spite of the operation of 53, an undesired force for the obstacle detection / stop device 53 to come off from the support case 50 acts, thereby separating the connected state. Since an undesired force acts in the direction, it can cause a failure. Therefore, in order to relieve an undesired force that separates the connected state due to such an excessive load, a restraining wall 50j that restrains the cam case 531 from moving upward as shown in FIG. Is preferably provided.

As will be described later as the second embodiment, the rotation relay plate 59 is omitted, and 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 reduced. 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 delay amount between the input shaft member 60 and the output shaft member 56 when the rotation relay plate 59 is not used is the angle between the protrusion 564 protruding in the range of the angle α1 and the angle. The delay amount η is between the protruding piece 603 protruding in the range of α4. For example, if α1≈60 degrees and α4≈60 degrees, the delay amount η≈240 degrees. Accordingly, 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 slat 4.

Furthermore, the rotation relay plate 59 is changed by preparing the rotation relay plate 59 that changes the shape of the protrusion piece 592 (angle α2) or the shape of the rotation receiving portion 594 (angle α3) to generate multiple types of delay amounts. It is also possible to realize many kinds of delay amounts only.

The

case members

55a and 55b fit the output shaft member 56, the brake spring 57, the spring case 58, the rotation 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 accommodated. More specifically, fitting receiving portions 551 having protrusions 553 are formed on the upper and lower surfaces of the case member 55a, respectively, and holes that can be fitted with the protruding portions 553 are formed on the upper and lower surfaces of the case member 55b. A fitting piece 552 that has 554 and engages with the fitting receiving portion 551 is formed. That is, when forming a case by using two case members to form a case, if the fitting is formed in a parallel direction to the drive shaft 11, the fitting force is weakened by the rotation of the drive shaft 11, and there is a problem in quality. Therefore, it is necessary to form a unit using a screw or the like. However, as shown in the present embodiment, it is configured to be fitted to the drive shaft 11 in the vertical direction so that the drive shaft 11 is strongly fitted against the rotation. Since it has a resultant force, it is not necessary to form a unit such as a screw, which contributes to comprehensive ease of assembly and cost reduction.

In the present embodiment, the example in which the shaft portion 561 of the output shaft member 56 and the cam shaft 531 of the obstacle detection and stop device 53 are engaged in a hexagonal shape has been described. It is preferable that the engagement shape is a side. That is, the shaft portion 561 of the output shaft member 56 is configured to have a polygonal shape, and the cam shaft 531 of the obstacle detection and stop device 53 is configured to engage with the shaft portion 561, so that the output shaft member 56 can be assembled with a slight rotational operation. , The assemblability is improved.

If 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 winding shaft 52 can be operated by one drive shaft 11. Although it is configured, if a tilt operation without raising / lowering the slat 4 is desired, the bottom rail 8 is not raised / lowered by the tilt operation. Further, when the bottom rail 8 is not at the lower limit position, the operability of tilting after the folding portion of the slat 4 is raised during the tilt operation is not impaired.

For example, when a predetermined number of horizontal slats 4 are folded into the bottom rail 8 as shown in FIG. 6 (a), the angle of the slats 4 is adjusted by a tilt operation as shown in FIG. 6 (b). 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 folding portion of the slat 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 square recess. Therefore, when the delay unit 5a is installed in each head box 1, the upper corner portion 550a of the delay unit 5a supported by the lower corner portion 550b is engaged with the upper end of the head box 1 (see FIG. 6). Backlash in the front-rear direction and the up-down direction can be suppressed. Further, since the claw portions 558 are formed on the

case members

55a and 55b of the delay unit 5a, by holding the cord support unit 5b against the protrusion 50b of the support case 50, the rattling in the left-right direction is also suppressed. Is done.

In the present embodiment, the example in which the shaft portion 561 of the output shaft member 56 is engaged with the cam shaft 531 of the obstacle detection and stop device 53 has been described. However, the winding shaft is not provided via the obstacle detection and stop device 53. Even in the case of engaging with 52, the action and effect according to the present invention can be exhibited.

(Example 2)
Next, the cord support apparatus 5 having the delay unit 5a according to the second embodiment will be described. FIGS. 7A and 7B are a perspective view and a cross-sectional view showing a schematic configuration of the cord support device 5 having the delay unit 5a according to the second embodiment of the present invention. 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. FIG. 9 is a perspective view for explaining 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, components having the same functions as those in the first embodiment are denoted by the same reference numerals.

7A, the cord support device 5 having the delay unit 5a according to the second embodiment is configured by arranging the delay unit 5a in parallel with the cord support unit 5b as in the first embodiment. Similarly to the first embodiment, the cord support unit 5b according to the delay unit 5a of the second embodiment supports the tilt drum 51 and the winding shaft 52 in a rotatable manner by using the support case 50 with the drive shaft 11 as a rotation axis. ing. The ladder cord 9 to be suspended from the tilt drum 51 and the lifting / lowering cord 10 to be suspended from the take-up shaft 52 are led out from a lead-out port 50 a provided on the bottom surface of the support case 50.

However, the winding shaft 52 in the cord support unit 5b according to the delay unit 5a of the second embodiment can be wound or rewound by multilayer winding of the tape-like lifting cord 10, and the tilt drum 51 is formed by a torsion coil spring. A suspension 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 downsizing.

The suspension member 511 is formed of a torsion coil spring, and both ends of the torsion coil spring are bent to form a loop-shaped ladder cord attaching 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 attaching portion 511a and supported by being suspended. The suspension member 511 is attached by tightening the tilt drum 51, and rotates integrally with the tilt drum 51 until the engagement end portion 511b contacts the wall portion formed on the support case 50. When the end portion 511 b comes into contact with the wall portion formed in the support case 50, the tightening force is weakened and the idle drum rotates idly. Therefore, the angle of each slat 4 is adjusted in the same phase via the ladder cord 9 based on the rotation of the tilt drum 51.

The delay unit 5a according to the first embodiment shown in FIG. 3 can be applied to the cord support unit 5b according to the delay unit 5a according to the second embodiment. The delay unit 5a of Example 2 is configured as shown in FIG.

Referring to FIG. 8, the delay unit 5a according to the second embodiment has a configuration in which the rotation relay plate 59 is omitted and the shape of the

case members

55a and 55b is reduced 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, the shape of the

case members

55a and 55b is also omitted in comparison with the first embodiment, and the shaft portion 606 and the flange 604 of the input shaft member 60 are formed in the case. Except that the

members

55a and 55b are supported so as to be relatively rotatable at the circular opening 559d and the opening side surface 559b at the end of the drive transmission input side of the

members

55a and 55b, and contribute to downsizing, the same effects as the first embodiment Produce.

That is, in the delay unit 5a of the second embodiment, the rotation 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 works, and the same output shaft member 56, brake spring 57, spring case 58, and input shaft member 60 as those in the first embodiment are shared, and different delay amounts are generated.

For example, as described above with reference to FIG. 5C, the delay amount between the input shaft member 60 and the output shaft member 56 when the rotation relay plate 59 is not used is a protrusion protruding within the range of the angle α1. There is a delay amount η between the portion 564 and the protruding 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. Accordingly, 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 slat 4.

Also in the second embodiment, as shown in FIG. 7B, the 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 so as not to be connected (not engaged) to the drive shaft 11. In addition, an obstacle detection stop device 53 is provided on the front end side of the winding shaft 52 to prevent rotation of the winding shaft 52 that supports the lifting / lowering cord 10 when tension in the pulling direction does not act on the lifting / lowering cord 10. However, the obstacle detection and stop device 53 is also supported by the support case 50 in a non-coupled (non-engaged) manner with respect to the drive shaft 11. The case main body of the obstacle detection / stop device 53 is fixed to the distal end side of the take-up shaft 52, but the cylindrical cam shaft 531 accommodated in the case main body of the obstacle detection / stop device 53 is moved down the slat 4. When the bottom rail 8 collides with an obstacle, the rewinding of the lifting / lowering cord 10 is stopped, the descent of the slat 4 and the bottom rail 8 is stopped, and the play necessary for preventing the reverse winding of the lifting / lowering cord 10 is provided. The winding shaft 52 can rotate integrally with the winding shaft 52.

In the delay unit 5a of the second embodiment, only the input shaft member 60 is directly connected to the drive shaft 11 to rotate, and the delay unit 5a of the second embodiment is simply arranged on the drive shaft 11 in parallel. The rotation of the winding shaft 52 can be interlocked with a predetermined delay amount from the rotation of the tilt drum 51 with respect to the rotation of the winding shaft 52 via the obstacle detection stop device 53 (see FIGS. 9 and 7B).

In particular, as shown in FIG. 9, a claw portion 558 that grips the projection portion 50b provided on the support case 50 of the cord support unit 5b is driven in the

case portions

55a and 55b of the delay unit 5a of the second embodiment. Each is formed on the side wall portion on the transmission output side. As a result, the delay unit 5a of the second embodiment can be stably assembled in a manner that it can be easily attached to and detached from the cord support unit 5b on the drive shaft 11.

Further, in the second embodiment, the

case members

55a and 55b are configured to be fitted and formed in the vertical direction with respect to the drive shaft 11. Since the

case members

55a and 55b have a strong fitting force with respect to the rotation of the drive shaft 11, a combination of screws and the like There is no need for formation, and this contributes to easy assembly and low cost.

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 square recess. Therefore, when the delay unit 5a is installed in each 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). ), The back-and-forth and up-and-down play can be suppressed. Further, since the claw portions 558 are formed on the

case members

Also in this embodiment, the shaft portion 561 of the output shaft member 56 is formed in a polygonal shape, and the cam shaft 531 of the obstacle detection and stop device 53 is configured to engage with the shaft portion 561, so that the rotation can be performed with a slight rotational operation. It can be assembled and its assemblability is improved.

And if it is a horizontal blind to which the code | cord | chord support apparatus 5 which has the delay unit 5a of Example 2 is applied, it will comprise so that rotation of the tilt drum 51 and the winding shaft 52 can be operated with one drive shaft 11. FIG. Even in this case, if a tilt operation without raising / lowering the slat 4 is desired, the bottom rail 8 will not be raised / lowered by the tilt operation. Further, when the bottom rail 8 is not at the lower limit position, the operability of tilting after the folding portion of the slat 4 is raised during the tilt operation is not impaired.

In addition, the delay unit 5a of the first and second embodiments is applied to the cord support unit 5b configured to wind the string-like lifting / lowering cord 10 by the spiral winding type spiral shaft 52C while maintaining the shape and structure thereof. The cord support device 5 can also be configured.

For example, FIGS. 10A and 10B are a perspective view and a cross-sectional view showing a schematic configuration of a helically wound cord support device 5 having a delay unit 5a according to a second embodiment of the present invention. FIG. 11 is a perspective view for explaining a method of assembling the spirally wound cord support device 5 having the delay unit 5a according to the second embodiment of the present invention. 10 and 11, the same reference numerals are assigned to components having the same functions as those in the first embodiment.

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 as described above. However, the spiral shaft 52C in the cord support unit 5b shown in FIG. 10 (a) has the drive shaft 11 inserted into the substantially cylindrical main body in a non-engagement (non-coupled) manner, and a helical screw on the surface. A joint ridge is formed, and the upper end of the lifting / lowering cord 10 is attached to the recessed portion in the vicinity of the tip of the spiral shaft 52C, so that the lifting / lowering cord 10 can be wound or unwound.

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

The case part 51C is formed with a tilt drum 51 that is attached with a suspension member 511 using a torsion coil spring to support the ladder cord 9 in a suspended manner.

The suspension member 511 is bent at both ends of the torsion coil spring to form a loop-shaped ladder cord attaching portion 511a and a locking end portion 511b, and is attached by tightening the tilt drum 51. The suspension member 511 rotates integrally with the tilt drum 51 until the locking end 511b contacts the wall formed on the support case 50, and the locking end 511b is formed on the wall formed on the support case 50. When it comes into contact with the portion, the tightening force is weakened, and the tilt drum 51 is idled. Therefore, the angle of each slat 4 is adjusted in the same phase via the ladder cord 9 based on the rotation of the tilt drum 51.

Also in the example shown in FIG. 10A, the tilt drum 51 and the take-up shaft 52 are rotatably supported by the support case 50 with the drive shaft 11 as the rotation axis. The ladder cord 9 to be suspended from the tilt drum 51 and the lifting / lowering cord 10 to be suspended from the take-up shaft 52 are led out from a lead-out port 50 a provided on the bottom surface of the support case 50.

10B, the case portion 51C (tilt drum 51) is connected to the drive shaft 11 so as not to be rotatable relative to the drive shaft 11, and is supported by the support case 50. On the other hand, the winding shaft 52 is supported by the support case 50 so as not to be connected to the drive shaft 11.

As shown in FIGS. 10A and 10B, the delay unit 5a of the second embodiment is interposed through a disk-like support auxiliary member 70 fixed to the tip of the spiral shaft 52C (winding shaft 52). Configured to be attached.

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

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 are disk-shaped provided on the spiral shaft 52C (winding shaft 52) of the cord support unit 5b. The supporting auxiliary member 70 can be gripped. As a result, the delay unit 5a according to the second embodiment can be stably assembled to the spiral cord support unit 5b on the drive shaft 11 in a manner that can be easily attached and detached.

[Other Examples]
In the delay unit 5a of the first and second embodiments described above, the cord support device 5 is configured to be arranged in parallel outside the various support cases 50 to improve the assembling property, and the code support device 5 can be downsized. He explained that it would be excellent in practicality that contributes to versatility, reduction of parts management burden, and cost reduction. In particular, between the delay units 5a of the first and second embodiments, it was intended to increase the number of shared members as much as possible, with emphasis on contributing to the reduction of parts management burden and cost reduction.

The enlargement of the cord support device 5 in the front-rear direction or the up-down direction is accompanied by the enlargement of the shielding device itself. In this respect, the delay unit 5a of the first and second embodiments can avoid the enlargement and is effective. This produces a variety of 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. As compared with the delay unit 5a of Example 2, the

case members

55a and 55b are configured to be larger in the left-right direction. For this reason, for example, when the installation margin in the head box 1 is not sufficient, there is a demand for reducing the lateral width of the

case members

55a and 55b in the delay unit 5a of the first embodiment.

Thus,

Embodiments

3 and 4 will be described in order as a configuration example in which emphasis is placed on reducing the size of the delay unit 5a itself in the left-right direction rather than contributing to reducing the parts management burden and reducing the cost. To do. In general, in the first and second embodiments, a rotation transmission portion that generates a predetermined delay amount in the axial direction of the drive shaft 11 is associated with the drive shaft 11. By configuring the rotation transmission parts that cause the predetermined delay amount in the vertical direction to be linked, the widths of the

case members

55a and 55b in the delay unit 5a of the third and fourth embodiments are made smaller. .

(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. In addition, the same reference number is attached | subjected to the component which has the same function as Example 1 mentioned above. As shown in FIG. 12, the delay unit 5a of this embodiment includes an output shaft member 56, a brake spring 57, a spring case 58, a rotation relay plate 59, and an input shaft member, as in the first embodiment. 60 and

case members

55a and 55b.

The output shaft member 56 in this embodiment includes an outer octagonal cylindrical shaft portion 561 and a flange 567 in which a cylindrical shaft portion 568 is formed on the base end side (drive transmission input side) of the shaft portion 561. In the vicinity of a part of the outer periphery, a projection 564 that projects from the center of the shaft to the drive transmission input side within a range of a predetermined angle (an angle α1 described later) is provided. The shaft portion 568 and the flange 567 of the output shaft member 56 are supported by a circular opening 559c and an opening side surface 559a on one opening side surface 559a (drive transmission output side) of the

case members

55a and 55b, respectively, so as to be relatively rotatable. The In the output shaft member 56 in this embodiment,

engagement receiving portions

563a and 563b that are recessed in steps are formed on the base end side (drive transmission input side) of the flange 567. The shaft portion 561 is formed with a shaft hole 565 into which the drive shaft 11 can be inserted without being engaged. The outer octagonal cylindrical shaft portion 561 is engageable with the cylindrical cam shaft 531 having the octagonal shaft hole 531a of the obstacle detection and stop device 53 so as to be integrally rotatable. The rotation of the member 56 can be transmitted so as to rotate in synchronization with the cam shaft 531 of the obstacle detection and stop 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 rotation relay plate 59 of the present embodiment described later in the inside thereof. , 2 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 actuated against the rotation of the output shaft member 56 transmitted from the cam shaft 531 of the obstacle detection / stop device 53. In order to stably maintain the raising / lowering position of the slat 4, the pair of end portions 571 of the coiled brake spring 57 is provided with an output shaft so that the winding shaft 52 is not moved except during the raising / lowering operation. The protrusions 564 of the member 56 are fitted so as to engage with both sides. The spring case 58 accommodates the coiled brake spring 57 in a reduced diameter state, so that the brake spring 57 can always rotate relative to the spring case 58 by pressing the inner peripheral surface of the spring case 58. However, a predetermined braking force is activated. On the other hand, in the spring case 58, a pair of recesses 582 provided in a part thereof are non-rotatably locked by projections 557 provided in each of the

case members

55a and 55b, and each of the

case members

The rotation relay plate 59 of this embodiment is greatly different from the above-described embodiment 1. The rotation relay plate 59 of this embodiment has a smaller outer shape than the diameter of the brake spring 57 housed in a reduced diameter in the spring case 58 and has a protrusion 592a on a part of its outer peripheral surface, and an inner peripheral surface. A shaft hole 591 is formed of a substantially cylindrical member having a rotation receiving portion 594 in a part on the upper side, and has substantially the same diameter as the shaft hole 565 of the output shaft member 56. Therefore, the shaft hole 591 can be inserted through the drive shaft 11 in a non-engagement manner. The drive transmission output side surface of the rotation relay plate 59 has a shape capable of coming into contact with the

engagement receiving portions

563a and 563b on the drive transmission input side surface of the output shaft member 56 through the inside of the brake spring 57. In this state, the rotation relay plate 59 is positioned inside the brake spring 57 housed in a reduced diameter in the spring case 58 and is accommodated so as to be rotatable relative to the

case members

55a and 55b. For this reason, 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 part 563b in the recessed area excluding the protrusion 564 of the output shaft member 56, that is, the rotation relay plate 59 rotates. Even if the protruding portion 592a contacts the protruding portion 564 of the output shaft member 56 via the end portion 571 of the brake spring 57, the rotation is not transmitted to the output shaft member 56. 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 in a range of a predetermined angle (an angle α3 described later) from the axial center of the shaft hole 591. In this example, the rotation receiving part 594 and the protrusion 592a are formed within the same rotation angle range, but the size and arrangement of the rotation receiving part 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 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. Thus, a protruding piece 603 protruding alongside the shaft portion 601 is formed on the drive transmission output side surface of the flange 604 where the cylindrical shaft portion 606 is formed. In a state where the output side surface of the flange 604 of the input shaft member 60 is disposed so as to be in contact with the proximal end surface of the rotation relay plate 59, the shaft portion 606 and the flange 604 of the input shaft member 60 accommodate the

case members

55a and 55b, respectively. The circular opening 559d and the opening side surface 559b at the end on the drive transmission input side of the portion 556 are supported so as to be relatively rotatable. The shaft portion 601 can support the shaft hole 565 of the output shaft member 56 and the shaft hole 591 of the rotation relay plate 59.

Accordingly, the delay unit 5a according to the third embodiment is configured so that the amount of delay 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 transmitted to the output shaft member 56. And a delay amount obtained by adding up the delay amounts between the output shaft member 56 and the output shaft member 56.

For example, as shown in FIG. 14A, the amount of delay between the rotation relay plate 59 and the output shaft member 56 is such that the protrusion 564 protruding in the range of the angle α1 and the protrusion 592a protruding in the range of the angle α2. And the delay amount β. Further, as shown in FIG. 14B, the delay amount between the input shaft member 60 and the rotation relay plate 59 is such that the rotation receiving portion 594 in the range of the angle α3 and the protruding piece 603 protruding in the range of the angle α4. , The delay amount γ. The amount of delay 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 rotation relay plate 59 functions as a delay adjustment member that rotates and relays with a predetermined delay amount.

In particular, in the delay unit 5a of the present embodiment, the rotation relay plate 59 is positioned inside the spring case 58 and accommodated in the

case portions

55a and 55b. The width in the right and left directions can be reduced as compared with the delay unit 5a of the first embodiment.

Of the constituent members of the delay unit 5a of the third embodiment, only the input shaft member 60 is connected directly to the drive shaft 11, and the delay unit 5a of the third embodiment is arranged side by side on the drive shaft 11. Only by doing this, the rotation of the winding shaft 52 can be interlocked with a predetermined delay amount relative to the rotation of the winding shaft 52 via the obstacle detection / stop device 53 (similar to FIG. 4 described above).

Also in the present embodiment, the

case portions

55a and 55b are respectively formed with claw portions 558 for gripping the projection portions 50b provided on the support case 50 of the cord support unit 5b on the side walls on the drive transmission output side. Has been. As a result, the delay unit 5a according to the third embodiment can be stably assembled in such a manner that the delay unit 5a can be easily attached to and detached from the cord support unit 5b on the drive shaft 11.

And if it is a horizontal blind which applied the cord support apparatus 5 which has the delay unit 5a of Example 3, if the tilt operation without raising / lowering of the slat 4 is desired, the bottom rail 8 will raise / lower by the tilt operation. There is nothing. Further, when the bottom rail 8 is not at the lower limit position, the operability of tilting after the folding portion of the slat 4 is raised during 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

Example 4
Next, the cord support apparatus 5 having the delay unit 5a according to 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. Note that the same reference numerals are assigned to components having the same functions as those in the third embodiment. As shown in FIG. 13, the delay unit 5a of this embodiment includes an output shaft member 56, a brake spring 57, a spring case 58, an input shaft member 60, and a case member 55a as in the third embodiment. , 55b.

Referring to FIG. 13, the delay unit 5a according to the fourth embodiment maintains a reduced size of the

case members

55a and 55b as compared with the third embodiment, omits the rotary relay plate 59, and Accordingly, the shape of the input shaft member 60 is changed, and the other output shaft member 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 5 a according to 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. The cylindrical relay shaft portion 605 having a larger diameter and a square hole shaft hole 602, and the relay shaft portion within a predetermined angle (angle α5 described later) from the shaft center of the shaft portion 601 and the relay shaft portion 605. A protruding piece 603 a protruding side by side with 605 is formed through a flange 604.

The shaft portion 601 can support the shaft hole 565 of the output shaft member 56. The input shaft member 60 is arranged in such a manner that the boundary surface between the relay shaft portion 605 and the shaft portion 601 is disposed so as to be in contact with the engagement receiving portion 563 a on the base end surface of the output shaft member 56 through the inside of the brake spring 57. The shaft portion 606 and the flange 604 are supported by a circular opening portion 559d and an opening side surface 559b at the end portions on the drive transmission input side of the housing portions 556 of the

case members

55a and 55b, respectively, so as to be relatively rotatable. At this time, the relay shaft portion 605 is positioned inside the brake spring 57 housed in a reduced diameter in the spring case 58 and is housed so as to be relatively rotatable with respect to the

case members

55a and 55b.

For this reason, the protruding piece 603a of the input shaft member 60 can be relatively rotated 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 60 rotates, the rotation is not transmitted to the output shaft member 56 until the protruding piece 603a contacts the protruding portion 564 of the output shaft member 56. However, after the contact, the input shaft member 60 does not rotate. The rotation is transmitted to the output shaft member 56.

Also, the shape of the

case members

55a and 55b is maintained in a form that contributes to further miniaturization, and the same effects as the third embodiment are produced.

For example, as shown in FIG. 14C, the delay amount between the input shaft member 60 and the output shaft member 56 when the rotation relay plate 59 is not used is the angle between the protrusion 564 protruding in the range of the angle α1. The amount of delay η is between the protruding piece 603a protruding in the range of α5.

In the fourth embodiment, the tilt drum 51 is supported by the support case 50 so as not to rotate relative to the drive shaft 11 in the same manner as the second embodiment (similar to the above-described FIG. 7B). On the other hand, the take-up shaft 52 is supported by the support case 50 so as not to be connected (not engaged) to the drive shaft 11. In addition, an obstacle detection stop device 53 is provided on the front end side of the winding shaft 52 to prevent rotation of the winding shaft 52 that supports the lifting / lowering cord 10 when tension in the pulling direction does not act on the lifting / lowering cord 10. However, the obstacle detection and stop device 53 is also supported by the support case 50 in a non-coupled (non-engaged) manner with respect to the drive shaft 11. The case main body of the obstacle detection / stop device 53 is fixed to the distal end side of the take-up shaft 52, but the cylindrical cam shaft 531 accommodated in the case main body of the obstacle detection / stop device 53 is moved down the slat 4. When the bottom rail 8 collides with an obstacle, the rewinding of the lifting / lowering cord 10 is stopped, the descent of the slat 4 and the bottom rail 8 is stopped, and the play necessary for preventing the reverse winding of the lifting / lowering cord 10 is provided. The winding shaft 52 can rotate integrally with the winding shaft 52.

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

Also in the delay unit 5a of the fourth embodiment, the

case portions

55a and 55b include a claw portion 558 that grips the projection portion 50b provided on the support case 50 of the cord support unit 5b on the 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 in such a manner that it can be easily attached to and detached from the cord support unit 5b on the drive shaft 11.

Further, the delay unit 5a of the third and fourth embodiments is applied to the cord support unit 5b configured to wind the string-like lifting / lowering cord 10 by the spiral winding type spiral shaft 52C, as in the first and second embodiments. Thus, the cord support device 5 can also be configured (see FIG. 10 described above). In particular, as in FIG. 11 described above, the claw portions 558 of the

case portions

55a and 55b of the delay unit 5a of the fourth embodiment are disc-shaped provided on the spiral shaft 52C (winding shaft 52) of the cord support unit 5b. The supporting auxiliary member 70 can be gripped. As a result, the delay unit 5a according to the fourth embodiment can be stably assembled to the helical cord support unit 5b on the drive shaft 11 in a manner that can be easily attached and detached.

Furthermore, as shown in FIG. 13, also in the fourth embodiment, the

case members

55a and 55b are formed with upper corner portions 550a having square recesses. Therefore, when the delay unit 5a is installed in each 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). ), The back-and-forth and up-and-down play can be suppressed. Further, since the claw portions 558 are formed on the

case members

(Configuration related to assembly in the head box regarding the delay unit)
FIG. 15 is a top view showing a configuration relating to the assembly in the head box 1 regarding the delay unit 5a according to the embodiment of the present invention. In particular, FIG. 15 illustrates a configuration relating to assembly in the head box 1 by taking the delay unit 5a shown in FIG. 13 as an example of the delay units 5a of the first to fourth embodiments described above. Note that the same applies to any of Examples 1 to 4.

The upper surface of the head box 1 is opened with a length L1 in the front-rear direction, and the interior thereof roughly has a housing space with a length L2 (> L1) in the front-rear direction. The cord support unit 5b including the tilt drum 51, the winding shaft 52, and the obstacle detection / stop device 53 is accommodated in the support case 50, and is shifted in the front-rear direction and the vertical direction in the head box 1 in the accommodation space of the length L2. It is regulated and installed so that there is no. For this reason, in order to install the cord support unit 5b accommodated in the support case 50 in the head box 1, the upper surface of the head box 1 is widened, or openings at both ends in the left-right direction of the head box 1 (see FIG. Inserted from (not shown).

On the other hand, as shown in FIG. 15, the delay unit 5a has a length between a side surface on the drive transmission input side of the

case members

55a and 55b and a side surface on the drive transmission output side of the shaft portion 561. d is shorter than the length L1 opened on the upper surface of the head box 1. For this reason, the delay unit 5a can be easily installed in the accommodating space of the head box 1 at a desired position. That is, in order to install the delay unit 5 a in the head box 1, the head box 1 is installed with the upper surface widened, or is inserted through openings (not shown) at both the left and right sides of the head box 1. There is no need.

Further, as shown in FIG. 15, the delay unit 5a has an outer shape that is within the arc S having a diameter D (≦ L2) from the center of gravity Op as seen from above. For this reason, when the delay unit 5a is installed in the head box 1, the delay unit 5a can face the cord support unit 5b accommodated in the support case 50 to be connected, for example, by rotation about 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 accommodated in the support case 50 to be connected, The delay unit 5 a is installed in the accommodation space of the head box 1. Subsequently, as illustrated in FIG. 16B, the delay unit 5 a is rotated in the accommodation space of the head box 1 so as to face the cord support unit 5 b 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. In addition, as shown to Fig.17 (a), several code | cord support units 5b are each arrange | positioned by the direction according to the hanging position of the raising / lowering cord 10, and according to direction to each cord support unit 5b of connection object, The direction of the delay unit 5a is also arranged. Further, as shown in FIG. 17A, the ladder cord support member 6 can also be disposed 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 made indefinitely with respect to the plurality of delay units 5a, the plurality of code support units 5b, and the ladder code support member 6 arranged in the head box 1. Are inserted through openings (not shown) at both ends in the left-right direction of the head box 1, and functional members such as the operation unit 2 are arranged to close both ends in the left-right direction of the head box 1 with side caps 1 c.

At this time, in the assembly procedure according to the conventional technique, when described with reference numerals according to the present invention, when the drive shaft 11 is inserted into the plurality of cord support units 5b, the lifting cords 10 are attached to all the winding shafts 52. It is necessary to insert while aligning the position alignment (initial winding amount and attachment position of each winding shaft 52) at the same time. On the other hand, the delay units 5a according to the first to fourth embodiments of the present invention described above are freely combined and separated with respect to the plurality of code support units 5b, and can be inserted at random when the drive shaft 11 is inserted. The cost (burden) related to can be reduced.

That is, in the assembling procedure according to the present invention, after the drive shaft 11 is inserted, the alignment (the initial winding amount and the mounting position of each winding shaft 52) regarding the mounting positions of the lifting / lowering cords 10 in all the winding shafts 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, each delay unit 5a is initialized in relation to the installation of a plurality of delay units 5a. Using the operation code 3, the drive shaft 11 is randomly rotated several times (about two rotations). That is, each protrusion and protrusion in 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 make the initial state so that the positions of the projections 564) are aligned, the drive shaft 11 is randomly rotated several times (about two rotations) using the operation cord 3.

Subsequently, as shown in the top view of FIG. 17 (c), the attachment positions (S in the figure) of the lifting / lowering cords 10 on the winding shaft 52 that can idle with respect to the drive shaft 11 in each cord support unit 5b are aligned. After that, the respective delay units 5a facing each other are connected to the respective cord support units 5b to be connected by a sliding operation in the left-right direction. In the delay unit 5a in each of the first to fourth embodiments described above, the

case member

55a, 55b having the lower corner portion 550b is formed with the upper corner portion 550a having a concave shape in a square shape. Therefore, the upper corner portion 550a. Engages with the upper end of the head box 1, and can be slid while suppressing backlash in the front-rear direction and the up-down direction. In this way, each delay unit 5a is initialized, and the position of the winding shaft 52 in each cord support unit 5b can be easily aligned, so that the slat 4 can be lifted and lowered with a good balance 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, by holding the cord support unit 5b against the protrusion 50b of the support case 50, the rattling in the left-right direction is also suppressed. Is done. In particular, the claw portion 558 of the delay unit 5a can be viewed from the opening on the upper surface of the head box 1 with respect to the protrusion 50b of the cord support unit 5b to be connected (length figure 16 (b)). ), It can be easily connected. In the conventional technique, it is necessary to assemble while confirming the connection state of the drive shaft 11 with respect to the winding shaft 52. However, since the connection state cannot be visually checked, the cost (burden) at the time of the assembly is large. The delay unit 5a in No. 4 can also reduce the cost (burden) associated with the assembly from this point.

In addition, in the delay unit 5a in each of the first to fourth embodiments, as shown in FIG. 18A, the delay unit 5a is held by fitting with the protrusion 50b of the support case 50 by the claw portion 558 described above. An example in which the shaft portion 561 (an octagonal shaft in the illustrated example) of the output shaft member 5a in 5a and the shaft hole 531a (an octagonal shaft hole in the illustrated example) of the cam shaft 531 of the obstacle detection and stop device 53 are axially coupled will be described. However, the shaft connection can be realized 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. Referring 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 in a cylindrical shape, and convex portions 561b are formed at two opposing positions on the inner peripheral surface 561a. Provide. In addition, on the inner peripheral surface 561a of the shaft portion 561, the elastically deformable engagement pieces 561d are provided at two positions at right angles to the two opposing protruding portions 561b in a manner that does not 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 using the shaft hole 531a shown in FIG. 18 (a) as the connecting portion of the obstacle detection / stop device 53, the cam shaft 531 has a two-step structure having a step between the portion 5310 and the portion 5319. The outer peripheral surface shape is used, and concave portions 531b are provided at two positions opposite to the portion 5319. In addition, a fitting wall 531c that has a shorter diameter than the inner peripheral wall constituting the shaft hole 5313 of the cam shaft 531 and allows the drive shaft 11 to be inserted is provided on the surface of the connecting portion of the cam shaft 531.

The convex portions 561b at two opposing positions of the shaft portion 561 can engage with the concave portions 531b at two opposite positions of the portion 5319 of the cam shaft 531. In the connected state by this engagement, the distal end of the shaft portion 561 on the connection side. The fitting projection 561c of the engagement piece 561d of the shaft portion 561 that is elastically deformable is fitted to the fitting wall 531c of the cam shaft 531 at a position where the portion substantially contacts the portion 5310 of the portion 5319 of the cam shaft 531. Thus, the shaft portion 561 of the delay unit 5 a is configured as a locking means that locks 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 modifications are assumed such as the shapes of the convex portion 561b and the concave portion 531b being interchanged.

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

(Example 5)
Next, the cord support apparatus 5 having the delay unit 5a according to 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 modified code support device 5 having the delay unit 5a according to the fifth embodiment of the present invention and a schematic configuration thereof. The delay unit 5a and the code support device 5 of the fifth embodiment shown in FIGS. 19 to 21 are illustrated as modifications from the above-described first embodiment. It should be noted that similar modifications can be configured from the second to fourth embodiments. In addition, the same reference numerals are assigned to the same components as those in the above-described embodiments.

In the first to fourth embodiments described above, the example in which the delay unit 5a is arranged in parallel from the outside of the support case 50 of the cord support device 5 has been described. However, 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 on the inner side of the drive shaft 11 so as to rotate in conjunction with the rotation of the tilt drum 51 with a predetermined delay amount on the drive shaft 11.

As shown in FIG. 19, the delay unit 5a of the fifth embodiment includes an output shaft member 56, a brake spring 57, a spring case 58, and a rotation relay plate 59, as in the first embodiment (see FIG. 3). Although the input shaft member 60 is provided, the shape of the case member 55 that accommodates 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 5 a according to the fifth embodiment is configured to have 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. Accordingly, the shape of the input shaft member 60 is changed, and the output shaft member 56, the brake spring 57, and the spring case 58 are shared by the 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. However, from the surface on the drive transmission input side of the flange 604 of the input shaft member 60 onto the drive shaft 11. The shape of the cylindrical shaft portion 606 having a substantially square hole shaft hole 602 that is 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. The bearing 50c is rotatably supported.

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 transmit the rotation of the input shaft member 60 to the output shaft member 56. Up to this point, the delay amount between the input shaft member 60 and the rotation relay plate 59 and the delay amount between the rotation relay plate 59 and the output shaft member 56 are used.

The case member 55 in the delay unit 5a according to the fifth embodiment is configured to have a shape suitable for being supported inside the support case 50 of the cord support device 5. In this example, the output shaft member 56 and the brake spring 57 are used. A leg portion 550c extending downward in a substantially E-shaped cross section for forming a lower corner portion 550b is formed in a cylindrical body having a housing portion 556 for housing the spring case 58, the rotation relay plate 59, and the input shaft member 60. Is provided.

The circumferential surface of the housing portion 556 of the case member 55 rotatably supports the peripheral edge of the flange 604 of the input shaft member 60, and a convex portion 557 provided on the circumferential surface of the housing portion 556 is a part of the spring case 58. The spring case 58 is fixed in a non-rotatable manner by locking a pair of recesses 582 provided on the spring case 58. Further, the shaft portion 568 and the flange 567 of the output shaft member 56 are supported so as to be relatively rotatable by a circular opening portion 559c and an 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 engaged with the cam shaft 531 of the obstacle detection / stop device 53 so as to be integrally rotatable.

As shown in FIG. 20, the delay unit 5 a of the fifth embodiment configured as described above is first delayed with respect to the cord support unit 5 b including the tilt drum 51, the winding shaft 52, and the obstacle detection stop 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 cam shaft 531 of the obstacle detection stop device 53. Subsequently, the delay unit 5a, the obstacle detection / stop 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. 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 according to the fifth embodiment stops the obstacle detection so that the winding shaft 52 rotates in conjunction with the rotation of the tilt drum 51 with a predetermined delay amount on the drive shaft 11 as shown in FIG. It is connected to the winding shaft 52 via the device 53 and is accommodated in the support case 50 of the cord support device 5.

In the case member 55 of the delay unit 5a according to 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-rear direction. Is done. Then, the drive shaft 11 is inserted into the cord support device 5 supported in the head box 1, and the delay unit 5a is not displaced 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 that the delay unit 5a is supported inside the support case 50 of the cord support device 5 as in the fifth embodiment. Even when the rotation of the tilt drum 51 and the winding shaft 52 can be operated by one drive shaft 11 and the tilt operation without raising / lowering the slat 4 is desired, the bottom rail 8 is raised and lowered by the tilt operation. Can solve the problem. In particular, when the bottom rail 8 is not at the lower limit position, it is possible to solve the problem of tilting after the slat convolution portion is raised during the tilt operation.

Accordingly, the delay unit 5a according to the present invention is a device for the cord support device 5 that allows the slats 4 to be moved up and down and tilted by one drive shaft 11, and has one drive shaft 11 as the rotation axis center. The take-up shaft 52 rotates in conjunction with the rotation of the tilt drum 51 with a predetermined delay amount outside or inward of the support case 50 that rotatably supports the tilt drum 51 and the take-up shaft 52. They are arranged 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 rotates the drive shaft 11 in conjunction with a predetermined delay amount, and the output shaft portion serves as the winding shaft 52. The delay unit 5a is arranged so as to be directly or indirectly connected to the bearing portion.

In the horizontal blind according to the present invention, the lifting operation of the slat 4 is performed by winding or unwinding the lifting cord 10 by the plurality of winding shafts 52 constituting the cord winding device based on the rotation of one drive shaft 11. The ladder 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, so that the slats 4 supported by the ladder cord 9 are supported. When the slat 4 is reversed after the slat 4 is moved up and down, the rotation of the drive shaft 11 is transmitted to the tilt drum 51 (or 51a) and the winding shaft 52 during the angle adjustment of the slat 4 is adjusted. The drive shaft 11 and the winding shaft 52 are configured to rotate together after a predetermined relative rotation, and the cord winding device and the tilt drum A brake means (

case members

55a and 55b, brake spring 57, and spring case 58 in the delay unit 5a) supported so as not to rotate with respect to the head box 1 that houses 51 (or 51a) is separated from the cord winding device. It provided and comprised so that rotation of the winding shaft 52 during angle adjustment of the slat 4 might be prevented.

Thus, the rotation of the tilt drum 51 and the take-up shaft 52 can be operated by one drive shaft 11, and when the tilt operation without raising / lowering the slat 4 is desired, the bottom rail 8 is raised / lowered by the tilt operation. Can solve the problem. In particular, when the bottom rail 8 is not at the lower limit position, it solves the problem of tilting after the slat convolved part rises during tilt operation, improves assembly, reduces size, versatility, and reduces parts management burden In addition, it is excellent in practicality that contributes to cost reduction.

As described above, the present invention has been described with reference to examples of specific embodiments, but the present invention is not limited to the examples of the above-described embodiments, and various modifications can be made without departing from the technical idea thereof. For example, in the example of the above-described embodiment, the example mainly through the obstacle detection and stop device 53 has been described, but the embodiment is not limited thereto, and is configured to be directly or indirectly engaged with the winding shaft 52. If it is, the effect | action and effect which concern on this invention can be exhibited.

In the example of the embodiment described above, an example has been described in which the delay unit 5a is selectively used for each type of the code support unit 5b. For example, the code support unit 5b illustrated in FIG. Instead of applying the delay unit 5a, a rotation relay plate 59 that does not generate 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. In this case, the

case members

55a and 55b can be shared.

(Horizontal bride with a cord support device that suspends a ladder cord having an annular upper end)
Next, a horizontal blind provided with the

cord support devices

5L, 5M, and 5R according to the present invention will be described with reference to FIG.

First, in the horizontal blind shown in FIG. 22, 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, respectively.

Each

cord support device

5L, 5M, 5R suspends and supports a plurality of slats 4 via a pair of string-like ladder cords 9 hanging down to the indoor side and the outdoor side. A bottom rail 8 is suspended and supported at the lower end. The head box 1 is fixed to a ceiling-side mounting surface via a bracket 7.

Further, a string-like lifting / lowering cord 10 is suspended from each

cord support device

5L, 5M, 5R 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 lifting / lowering cord 10 is substantially 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 center. In addition, you may make it follow the edge part of the front-back direction of each slat 4 regarding the hanging position of the raising / lowering cord 10. FIG.

That is, each

cord support device

5L, 5M, 5R in this example can wind up or rewind the tilt drum 51 that suspends a pair of ladder cords 9 hanging down on the indoor side and the outdoor side, and the lifting cord 10. The long cylindrical take-up shaft 52 having the inclined shape is arranged side by side on the square rod-like drive shaft 11 and supported by the support case 50. Further, an obstacle detection / stop device 53 is provided on the front end side of the winding shaft 52.

In particular, in each of the

cord support devices

5L, 5M, and 5R of the present example, the ladder cord 9 is suspended by hanging on the tilt drum 51 with the upper ends of the pair of ladder cords 9 hanging down indoors and outdoors. The slat 4 supported by the weft of the ladder cord 9 is rotated by the rotation of the tilt drum 51. 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 suspension of the pair of ladder cords 9 depending 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 slats 4. It is attached from below. The slat retainer 12 is provided with a notch or an insertion hole (not shown) so as not to hinder the movement of the lifting / lowering cord 10.

For this reason, although the details will be described later, the upper ends of the pair of ladder cords 9 depending on the indoor side and the outdoor side are connected to form an annular upper end portion, and the tilt drum 51 has a predetermined frictional force. And has a V-shaped groove for hanging the annular upper end.

Here, the

cord support devices

5L, 5M, and 5R shown in FIG. 22 do not include the delay unit 5a shown in FIG. 2 and the like, and the tilt drum 51 and the winding shaft 52 rotate relative to the drive shaft 11. Linked impossible.

However, each of the

cord support devices

5L, 5M, and 5R is configured in the same manner as the cord support device 5 shown in FIG. 2 described above, and connects the tilt drum 51 to the drive shaft 11 so as not to rotate relative to the drive shaft 11. It is also possible to provide a configuration in which a delay unit 5a is provided in which the shaft 52 is disconnected (not engaged) with respect to the drive shaft 11 and the winding shaft 52 is operated to rotate in conjunction with the rotation of the tilt drum 51 with a predetermined delay amount. .

In this example, three cord support devices are provided in the horizontal blind as the

cord support devices

5L, 5M, and 5R. However, a configuration in which two cord support devices are provided or four or more cords are provided. It can be set as the structure which provides a support apparatus. The cord support device according to the present invention, which will be described later, simply has a V-shaped groove for hanging a pair of ladder cords 9 hanging down on the indoor side and the outdoor side, respectively, like the ladder cord support member 6 shown in FIG. It can also be configured as a device that supports the tilt drum 51a.

Therefore, the horizontal blind shown in FIG. 22 operates the operation cord 3 to rotate the drive shaft 11 and rotates the tilt drum 51 in each of the

cord support devices

5L, 5M, and 5R as the drive shaft 11 rotates. Thus, a tilt operation for adjusting the angle of the slat 4 is possible. When the drive shaft 11 is rotated more than the rotation required for the tilt operation, an elevating operation for raising or lowering the slat 4 is possible while maintaining the state in which the slat 4 is rotated by the tilt operation.

Hereinafter, more specifically, regarding the structure and operation of the cord support device 5M as a representative of the

cord support devices

5L, 5M, and 5R, according to the conventional technique and the present invention, mainly from the viewpoint of the cord distribution of the ladder cord 9. Techniques (Examples 1 to 4) will be described in order.

(Ladder code distribution based on conventional techniques)
FIG. 23 (a) shows a partial front view of the periphery of the cord support device 5M that suspends the ladder cord 9 having one annular upper end based on the conventional technique, and FIG. The side view (The description of the raising / lowering cord 10 is abbreviate | omitted) about the code | cord | chord support apparatus 5M regarding the ladder cord 9 with the one cyclic | annular upper end part is shown.

First, as shown in FIG. 23A, the cord support device 5M placed in the head box 1 is tilted with the winding shaft 52 (not shown in a non-sectional view) so as not to rotate relative to the drive shaft 11. Drums 51 (shown in the cross-sectional view) are provided and are supported by the support case 50 respectively. The winding shaft 52 has a long cylindrical shape with an inclination that allows the upper end of the lifting / lowering cord 10 to be attached and wound or rewound. The slat 4 is attached to the bottom rail 8 through an insertion hole (not shown) provided in a substantially central portion in the front-rear direction (see FIG. 22).

The multi-stage slats 4 are respectively supported by one or two wefts 9a provided at predetermined intervals between a pair of ladder cords 9 hanging down indoors and outdoors. The uppermost slat 4 is provided with a slat retainer 12 for holding the slat 4 supported by the weft thread 9a of the ladder cord 9.

Then, as shown in FIG. 23 (b), the upper ends 91F and 91R of the pair of ladder cords 9 depending on the indoor side and the outdoor side respectively form a single annular upper end portion based on the conventional technique. It is connected by a stop member (for example, a caulking metal member) 13. In the example shown in FIG. 23B, the locking member 13 is disposed above the slat 4 within a range that does not hinder the rotation of the slat 4.

As shown in FIG. 23A, the tilt drum 51 has a V-shaped groove 51V that becomes narrower toward the center axis of the tilt drum 51. The groove bottom 51b of the V-shaped groove 51V is a ladder code. It has a width narrower than the cross-sectional diameter of 9. The normal ladder cord 9 has a substantially square cross-sectional shape having a long side and a short side instead of a complete round cross-section, but the groove bottom 51b has a narrower width than the short side.

That is, the tilt drum 51 is configured to hook the annular upper end portion of the ladder cord 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 hang the one annular upper end portion of the ladder cord 9 with a predetermined frictional force by the V-shaped groove 51V is provided on the drive shaft 11. By the rotation of the tilt drum 51 accompanying the rotation, the multi-stage slats 4 supported by the weft 9a of the ladder cord 9 can be rotated.

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 suspension member 511 as shown in FIG. This is advantageous in that the load related to the rotation operation of the drive shaft 11 by the operation code 3 can be greatly 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 shape. Ladder cord attaching portions 511a and locking end portions 511b are formed. The upper ends of the pair of front and rear ladder cords 9 are attached to the ladder cord attaching portion 511a and supported by being suspended. The suspension member 511 is attached by tightening the tilt drum 51, and rotates integrally with the tilt drum 51 until the engagement end portion 511b contacts the wall portion formed on the support case 50. When the end portion 511 b comes into contact with the wall portion formed in the support case 50, the tightening force is weakened and the idle drum rotates idly. Thus, the angle of each slat 4 can be adjusted in the same phase via the ladder cord 9 based on the rotation of the tilt drum 51. However, since the load corresponding to the force that weakens the tightening force of the suspension member 511 is applied to the operation cord 3 at this time, the V-shaped groove 51V as shown in FIG. It is advantageous to use the tilt drum 51 configured to suspend the ladder cord 9.

However, as a form of the horizontal blind, the slat 4 has various lengths and widths, and the number of stages of the slat 4 is various, so that the load related to the ladder cord 9 is also various. For this reason, as one form of the horizontal blind, the frictional resistance to the ladder cord 9 generated by the V-shaped groove 51V is insufficient, and the operating force in the operating cord 3 is reduced, but the ladder is slipped greatly on the V-shaped groove 51V. The code 9 is transferred, and the operability may be deteriorated. 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 possible to change or adjust the frictional resistance more easily is desired.

Further, in the technique in which a friction member is separately provided for the ladder cord 9, the friction member changes its contact / non-contact state due to the rotation of the tilt drum 51. Insufficient contact with the slat 4 may cause rotation failure of the slat 4.

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

(Cord support device of Example 1)
FIG. 24A shows a partial side view of the periphery of the cord support device 5M according to the first embodiment of the present invention, and FIG. 24B is a schematic view of the cord arrangement. 24A is illustrated so as to be comparable to FIG. 23B, and the winding shaft 52 and the lifting / lowering cord 10 are not illustrated. In addition, it is also possible to provide an apparatus including only the tilt drum 51 without providing the winding shaft 52.

As shown in FIGS. 24A and 24B, the cord support device 5M placed 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 It is supported by the support case 50.

The tilt drum 51 shown in FIGS. 24A and 24B has a V-shaped groove 51V that decreases in width toward the central axis of the tilt drum 51, as in the case shown in FIG. The groove bottom 51b of the V-shaped groove 51V has a narrower width than the cross-sectional diameter of the ladder cord 9. The normal ladder cord 9 has a substantially square cross-sectional shape having a long side and a short side instead of a complete round cross-section, but the groove bottom 51b has a narrower width than the short side.

Then, as shown in FIG. 24B, the upper end 91F of the ladder cord 9 that hangs down to the indoor side is hooked on the V-shaped groove 51V of the tilt drum 51 from the indoor side, and then a locking member (for example, caulking metal) The member is locked to the ladder cord 9 hanging down to the outdoor side by the member 13a. On the other hand, the upper end 91 R of the ladder cord 9 that hangs down to the outdoor side is hung on the V-shaped groove 51 V of the tilt drum 51 from the outdoor side, and then hangs down to the indoor side by a locking member (for example, a caulking metal member) 13 b. Locked to the cord 9. In the example shown in FIGS. 24A and 24B, the locking

members

13a and 13b are arranged so as to be positioned 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 positioned below the slat 4 as long as the rotation of the slat 4 is not hindered.

As a result, the ladder cord 9 formed with two annular upper ends is hooked in the V-shaped groove 51V, and the friction resistance when the ladder cord 9 follows and rotates the slat 4 by the rotation of the tilt drum 51 is reduced. Can be increased.

When forming the two annular upper ends, either the cord distribution of the ladder cord 9 from the indoor side or the cord distribution of the ladder cord 9 from the outdoor side is defined as either the upper side (or the lower side). However, it is locked by the locking

members

13a and 13b so as not to be twisted in the rotation range of the slat 4. Since the ordinary 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 that there is no twist when the two annular upper ends are formed. What is necessary is just to latch by the

stop members

13a and 13b.

(Cord support device of Example 2)
FIG. 25A shows a partial side view around the cord support device 5M of the second embodiment according to the present invention, and FIG. 25B is a schematic view of the cord arrangement. 25A is illustrated so as to be comparable to FIG. 23B, and the winding shaft 52 and the lifting / lowering cord 10 are not illustrated. In addition, it is also possible to provide an apparatus including only the tilt drum 51 without providing the winding shaft 52.

As shown in FIGS. 25A and 25B, the cord support device 5M placed 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 It is supported by the support case 50.

The tilt drum 51 shown in FIGS. 25 (a) and 25 (b) has a V-shaped groove 51V that becomes narrower toward the central axis of the tilt drum 51, as in the case shown in FIG. 23 (a). The groove bottom 51b of the V-shaped groove 51V has a narrower width than the cross-sectional diameter of the ladder cord 9. The normal ladder cord 9 has a substantially square cross-sectional shape having a long side and a short side instead of a complete round cross-section, but the groove bottom 51b has a narrower width than the short side.

Then, as shown in FIG. 25 (b), the upper end 91F of the ladder cord 9 hanging down to the indoor side is hooked on the V-shaped groove 51V of the tilt drum 51 from the indoor side, and then the locking member (for example, caulking metal) The member 13 is locked to the ladder cord 9 depending on the outdoor side. On the other hand, the upper end 91 R of the ladder cord 9 that hangs down to the outdoor side is hooked on the V-shaped groove 51 V of the tilt drum 51 from the outdoor side, and is then distributed along the uppermost weft thread 9 a. For example, the caulking metal member 13 is locked to the ladder cord 9 that hangs down to the outdoor side together with the upper end 91F. In the example shown in FIGS. 25A and 25B, the locking member 13 is disposed so as to be positioned above the slat 4 within a range that does not hinder the rotation of the slat 4, but the locking member 13 is a slat. You may form so that it may be located below the slat 4 in the range which does not become the hindrance of 4 rotation.

Further, in the second embodiment shown in FIG. 25, compared to the first embodiment shown in FIG. 24, since the locking member 13 is located on the outdoor side, the frictional resistance can be increased without impairing the design. it can.

Also in this example, when forming the two annular upper end portions, either the cord distribution of the ladder cord 9 from the indoor side or the cord distribution of the ladder cord 9 from the outdoor side is either the upper side (or the lower side). Although it is good also as a side), it latches with the latching member 13 so that it may not twist in the rotation range of the slat 4. FIG. Since the ordinary 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 that there is no twist when the two annular upper ends are formed. What is necessary is just to latch by the stop member 13.

(Cord support device of Example 3)
Fig.26 (a) has shown the partial side view of the cord support apparatus 5M periphery of Example 3 by this invention, FIG.26 (b) is the cord distribution schematic. FIG. 26A is illustrated so as to be comparable to FIG. 23B, and the winding shaft 52 and the lifting / lowering cord 10 are not illustrated. In addition, it is also possible to provide an apparatus including only the tilt drum 51 without providing the winding shaft 52.

As shown in FIGS. 26A and 26B, the cord support device 5M placed 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 It is supported by the support case 50.

The tilt drum 51 shown in FIGS. 26A and 26B has a V-shaped groove 51V that becomes narrower toward the central axis of the tilt drum 51, as in the case shown in FIG. The groove bottom 51b of the V-shaped groove 51V has a narrower width than the cross-sectional diameter of the ladder cord 9. The normal ladder cord 9 has a substantially square cross-sectional shape having a long side and a short side instead of a complete round cross-section, but the groove bottom 51b has a narrower width than the short side.

Then, as shown in FIG. 26 (b), the upper end 91F of the ladder cord 9 that hangs down to the indoor side is hooked on the V-shaped groove 51V of the tilt drum 51 from the indoor side, and then a locking member (for example, caulking metal) The member is locked to the ladder cord 9 hanging down to the outdoor side by the member 13a. On the other hand, the upper end 91 R of the ladder cord 9 that hangs down to the outdoor side is hooked on the V-shaped groove 51 V of the tilt drum 51 from the outdoor side, and is then routed along the uppermost weft thread 9 a, (For example, a caulking metal member) 13b is engaged with the ladder cord 9 that hangs down to the outdoor side. In the example shown in FIGS. 26A and 26B, the two locking

members

13 a and 13 b are arranged so as to be positioned above and below the slat 4 within a range that does not hinder the rotation of the slat 4. However, the two locking

members

13a and 13b may be formed so as to be positioned below (or above) the slat 4 within a range that does not hinder the rotation of the slat 4.

In addition, in the third embodiment shown in FIG. 26, since the

locking members

13a and 13b are located on the outdoor side as compared with the first embodiment shown in FIG. 24, as in the second embodiment shown in FIG. The frictional resistance can be increased without impairing the design properties.

In the second embodiment shown in FIG. 25, the three ladder cords 9 are locked by the locking member 13, so that the burden of workability can be increased. However, the third embodiment shown in FIG. Then, since the number of cords locked by the

individual locking members

13a and 13b can be two, the burden of workability can be reduced.

Also in this example, when forming the two annular upper end portions, either the cord distribution of the ladder cord 9 from the indoor side or the cord distribution of the ladder cord 9 from the outdoor side is either the upper side (or the lower side). However, 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 cord 9 has a substantially square cross-sectional shape having a long side and a short side, the surface of the ladder cord 9 is aligned with the surface of the ladder cord 9 so that there is no twist when the two annular upper ends are formed. What is necessary is just to latch by the latching

members

13a and 13b of a location.

(Cord support device of Example 4)
Fig.27 (a) has shown the partial side view of the code | cord | chord support apparatus 5M periphery of Example 4 by this invention, FIG.27 (b) is the cord distribution schematic. FIG. 27A is illustrated so as to be comparable to FIG. 23B, and the winding shaft 52 and the lifting / lowering cord 10 are not illustrated. In addition, it is also possible to provide an apparatus including only the tilt drum 51 without providing the winding shaft 52.

As shown in FIGS. 27A and 27B, the cord support device 5M placed 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 It is supported by the support case 50.

The tilt drum 51 shown in FIGS. 27A and 27B has a V-shaped groove 51V that becomes narrower toward the central axis of the tilt drum 51, as in the case shown in FIG. The groove bottom 51b of the V-shaped groove 51V has a narrower width than the cross-sectional diameter of the ladder cord 9. The normal ladder cord 9 has a substantially square cross-sectional shape having a long side and a short side instead of a complete round cross-section, but the groove bottom 51b has a narrower width than the short side.

As shown in FIG. 27 (b), the upper end 91F of the ladder cord 9 that hangs down indoors is applied to the V-shaped groove 51V of the tilt drum 51 from the indoor side. The V-shaped groove 51V is again hooked for the second time, and then locked to the ladder cord 9 hanging down to the outdoor side by a locking member (for example, a caulking metal member) 13b. The On the other hand, the upper end 91 R of the ladder cord 9 that hangs down to the outdoor side is another locking member for the cord portion when the ladder cord 9 that hangs down to the indoor side with respect to the V-shaped groove 51 V is applied. (For example, a caulking metal member) 13a is locked.

Further, in the fourth embodiment shown in FIG. 27, since the

locking members

13a and 13b are located on the outdoor side as compared with the first embodiment shown in FIG. 24, the second and second embodiments shown in FIGS. Similar to 3, the frictional resistance can be increased without impairing the design.

In the second embodiment shown in FIG. 25, the three ladder cords 9 are locked by the locking member 13, so that the burden of workability can be increased. However, the fourth embodiment shown in FIG. Then, since the number of cords locked by the

individual locking members

13a and 13b can be two, the burden of workability can be reduced.

Also in this example, when the two annular upper ends are formed, the cord distribution of the ladder cord 9 from the indoor side may be either the upper side (or the lower side), but the rotation range of the slat 4 Are locked by two locking

members

13a and 13b so as not to be twisted.

The present invention has been described with reference to the specific embodiments with reference to FIGS. 24 to 27. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the technical concept thereof. . For example, in the embodiment described above, an example in which the cord distribution shown in FIGS. 24 to 27 is mainly applied to the cord support device 5M located in the center in the left-right direction in the horizontal blind shown in FIG. However, the cord distribution shown in FIG. 26 can be applied to all of the

cord support devices

5L, 5R, and 5M.

However, the cord distribution shown in FIGS. 24 to 27 may be applied only to the cord support device 5M, and the cord distribution shown in FIG. 23B may be applied to the other

cord support devices

5L and 5R. Alternatively, the cord distribution shown in FIGS. 24 to 27 may be applied only to the

cord support devices

5L and 5R, and the cord distribution shown in FIG. 23B may be applied to the cord support device 5M. That is, the cord distribution shown in FIG. 24 to FIG. 27 is applied in a balanced manner in the left-right direction, including the case where a larger number of cord support devices are provided. Thereby, it becomes possible to change or adjust the frictional resistance related to the hanging for various types of horizontal blinds.

Furthermore, by appropriately combining the cord support devices of Embodiments 1 to 4 with reference to FIGS. 24 to 27, the frictional resistance related to the hanging can be changed or adjusted for a wider variety of horizontal blinds.

In the example of the cord support apparatus of the first to fourth embodiments shown in FIGS. 24 to 27 described above, two annular upper end portions are formed on the pair of ladder cords 9 on the indoor side and the outdoor side to form a V-shape. Although the example which hangs | hangs to the groove | channel 51V was demonstrated, it is good also as a form which forms three or more cyclic | annular upper end parts and hang | hangs on the V-shaped groove | channel 51V.

Furthermore, although the example mentioned above demonstrated the example latched by the locking member 13 (or 13a, 13b) in order to form a plurality of annular upper ends with respect to the pair of ladder cords 9 on the indoor side and the outdoor side, It can be set as the form locked by arbitrary locking means, such as adhesion | attachment, welding, and sewing.

Furthermore, in the above-described example, the ladder cord 9 has a substantially square cross-sectional shape, and the specific shape of the V-shaped groove 51V as the outer peripheral surface of the tilt drum 51 is described as an example. Instead, any shape that generates a predetermined frictional force can be used as the outer circumferential surface of the ladder cord 9 having an arbitrary cross-sectional shape and the tilt drum 51 having an arbitrary shape on which the ladder cord 9 is mounted.

According to the present invention, since the delay unit and the cord support device can be configured in a mode that is excellent in practicality, it is useful for the application of a horizontal blind that allows the slats to be moved up and down and tilted with a single drive shaft.

According to the present invention, the cord support device including the tilt drum configured to hang the annular upper end portion of the ladder cord is changed or adjusted with respect to various types of horizontal blinds. Therefore, it is useful for applications of horizontal blinds that require changing or adjusting the frictional resistance.

DESCRIPTION OF SYMBOLS 1 Head box 4

Slat

5, 5L, 5M, 5R Code support apparatus 5a Delay unit 5b Code support unit 6 Ladder code support member 8 Bottom rail 9 Ladder code 10 Lifting code 11 Drive shaft 12

Slat presser

13, 13a, 13b Locking member DESCRIPTION OF SYMBOLS 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 Rotary relay plate 60 Input shaft member 70 Support auxiliary member

Claims

A delay unit of a cord support device that allows a slat to be moved up and down and tilted by a single drive shaft,
The winding shaft is rotated by a predetermined delay amount with respect to the rotation of the tilt drum outside or inside the support case that rotatably supports the tilt drum and the winding shaft with one drive shaft as the rotation axis. A delay unit that is arranged side by side on the drive shaft so as to rotate together.
The cord support apparatus according to claim 1, comprising the delay unit.
A cord support device that enables slats to be moved up and down and tilted by a single drive shaft,
A tilt drum that is directly connected to the drive shaft with one drive shaft as the rotation axis;
A winding shaft that is not directly connected to the drive shaft;
A delay unit having an output shaft portion that interlocks and rotates the drive shaft with a predetermined delay amount, and is arranged to directly or indirectly connect the output shaft portion to a bearing portion of the take-up shaft. A cord support device.
The cord support device according to claim 2 or 3, wherein the delay unit is configured to link a rotation transmitting portion that generates the predetermined delay amount in an axial direction of the drive shaft.
The cord support device according to claim 2 or 3, wherein the delay unit is configured to link a rotation transmission portion that generates the predetermined delay amount in a direction perpendicular to the drive shaft.
The delay unit is
An input shaft member directly connected to the drive shaft;
An output shaft member that has the output shaft portion that transmits the rotation of the input shaft member so as to rotate in conjunction with the predetermined delay amount, and that engages the input shaft member with play of a predetermined rotation angle; and
A braking member that suppresses rotation of the output shaft member other than rotation by rotation transmission from the input shaft member;
The cord support device according to claim 2, further comprising a case member that accommodates the input shaft member, the output shaft member, and the braking member.
The braking member is
A coil-shaped brake spring having a pair of end portions that engage with a part of the output shaft member while allowing rotation transmission from the input shaft member to the output shaft member;
The cord support device according to claim 6, further comprising: a spring case that receives the brake spring with a reduced diameter and is engaged with a case member of the delay unit.
A rotation 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 apparatus according to claim 6 or 7, wherein
The cord support device according to any one of claims 2 to 8, 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 9, wherein the delay unit is arranged to be connected to a bearing portion of the winding shaft via an obstacle detection and stop device. .
The cord support device according to any one of claims 2 to 10, wherein a rotation amount that causes a delay amount by the delay unit is set to be not less than an angle adjustment range of the slat.
The case part of the said delay unit has a nail | claw part hold | gripped with respect to the support case of the said code | cord | chord support apparatus, or the support auxiliary member of the said winding shaft, It is any one of Claims 2-11 The cord support device described in 1.
The output shaft portion of the delay unit has a locking means for connecting directly or indirectly to a bearing portion of the winding shaft, according to any one of claims 2 to 10, Cord support device.
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 lifting and lowering of the slat can be performed by winding or unwinding the lifting and lowering cord by the plurality of winding shafts constituting the cord winding device, and the ladder cord is suspended from the plurality of tilt drums. And a horizontal blind that is rotated based on the rotation of the drive shaft and is capable of adjusting the angle of the slat supported by the ladder cord,
When the slat reverses after the slat lifting operation, the rotation of the drive shaft is transmitted to the tilt drum, and the rotation of the winding shaft during the adjustment of the angle of the slat is prevented so that the driving shaft and the winding shaft are The slat is provided separately from the cord winding device, and is configured to rotate in conjunction with the cord winding device and the tilt box after the predetermined relative rotation. A horizontal blind configured to prevent rotation of the winding shaft during angle adjustment.
Based on the rotation of one drive shaft, the lifting and lowering of the slat can be performed by winding or unwinding the lifting and lowering cord by the plurality of winding shafts constituting the cord winding device, and the ladder cord is suspended from the plurality of tilt drums. And a horizontal blind that is rotated based on the rotation of the drive shaft and is capable of adjusting the angle of the slat supported by the ladder cord,
A plurality of delay units arranged in parallel with the plurality of winding shafts on the drive shaft so that the winding shaft rotates in conjunction with the rotation of the tilt drum with a predetermined delay amount;
Each of the plurality of delay units has a shape that can be inserted without deformation of the head box from an opening provided on an upper surface of the head box when assembled to the head box that houses the winding shaft and the tilt drum. A horizontal blind characterized by having.
Based on the rotation of one drive shaft, the lifting and lowering of the slat can be performed by winding or unwinding the lifting and lowering cord by the plurality of winding shafts constituting the cord winding device, and the ladder cord is suspended from the plurality of tilt drums. And a horizontal blind that is rotated based on the rotation of the drive shaft and is capable of adjusting the angle of the slat supported by the ladder cord,
A plurality of delay units arranged in parallel with the plurality of winding shafts on the drive shaft so that the winding shaft rotates in conjunction with the rotation of the tilt drum with a predetermined delay amount;
An upper surface of a head box that accommodates the winding shaft and the tilt drum is opened with a first length in the front-rear direction, and the interior of the head box has a second length that is 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 when assembled to the head box, and the plurality of winding units to be coupled on the drive shaft. When rotated so as to face each other in a direction parallel to the shaft, the head box has a shape that suppresses displacement in the front-rear direction and the vertical direction with respect to the head box in the second-length accommodation space. Horizontal blinds characterized by
Based on the rotation of one drive shaft, the lifting and lowering of the slat can be performed by winding or unwinding the lifting and lowering cord by the plurality of winding shafts constituting the cord winding device, and the ladder cord is suspended from the plurality of tilt drums. And a horizontal blind that is rotated based on the rotation of the drive shaft and is capable of adjusting the angle of the slat supported by the ladder cord,
A plurality of delay units arranged in parallel with the plurality of winding shafts on the drive shaft so that the winding shaft rotates in conjunction with the rotation of the tilt drum with a predetermined delay amount;
Each of the plurality of delay units is configured such that the drive shaft includes the plurality of delay units, the plurality of winding shafts, and the plurality of tilt drums when assembled to a head box that houses the winding shaft and the tilt drum. Each of the plurality of delay units can be initialized by rotating the drive shaft at random more than a predetermined number of rotations after being randomly inserted into the center of the shaft, and attaching the lifting / lowering cords on all winding shafts Separated with respect to the plurality of winding shafts so as to be aligned with respect to the position, and after the alignment, they are connected in parallel by sliding in the left and right direction of each delay unit within the head box. Horizontal blinds characterized by
A horizontal blind that allows the slat to rotate by following the ladder code by rotating the tilt drum,
A cord support device configured to form a plurality of annular upper end portions of a pair of ladder cords on the indoor side and the outdoor side and to be attached to the outer peripheral surface formed on the tilt drum with a predetermined frictional force. Horizontal blinds characterized by
The upper end of the ladder cord that hangs down to the indoor side is hooked to the ladder cord that hangs down to the outdoor side after being hooked on the outer peripheral surface of the tilt drum from the indoor side,
The upper end of the ladder cord hanging down from the outdoor side is hooked to the ladder cord hanging from the outdoor side to the indoor side after being hooked on the outer peripheral surface of the tilt drum. Horizontal blinds as described in
The upper end of the ladder cord that hangs down to the indoor side is hooked to the ladder cord that hangs down to the outdoor side after being hooked 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 hung on the outer peripheral surface of the tilt drum from the outdoor side, and then distributed along the uppermost weft provided between the pair of ladder cords. The horizontal blind according to claim 19, wherein the horizontal blind is locked to a hanging ladder cord.
The upper end of the ladder cord that hangs down to the indoor side is arranged along the uppermost weft provided between the pair of ladder cords after the first hanging from the indoor side to the outer peripheral surface of the tilt drum. Rotate again, and the second outer periphery is applied to the outer peripheral surface, and then locked to the ladder cord hanging outward,
The upper end of the ladder cord that hangs down to the outdoor side is locked to the cord portion when the first hanging of the ladder cord that hangs down to the indoor side is performed. Horizontal blinds as described in
The horizontal blind according to claim 21 or 22, wherein a locking portion of each upper end of the pair of ladder cords on the indoor side and the outdoor side is provided on the outdoor side.