JP2016037838A - Horizontal blind - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a horizontal blind for suspending-supporting slats of a large number of stages via a ladder cord from a headbox.SOLUTION: A horizontal blind of the present invention comprises a tilt cord 16 suspended from a headbox 1 so as to be capable of an angle adjustment of one or more of slats 4 among slats 4 of a large number of stages, a tilt operation cord 8 suspended from the headbox 1 so as to be capable of operating the angle adjustment and a tilt operation load reduction device 10 for reducing operation force of the tilt operation cord 8 by converting a moving load of the tilt cord 16.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a horizontal blind that supports a plurality of slats suspended from a head box via a ladder cord.

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

  For example, the bottom rail is arranged at the lower end of the ladder cord, and the slat 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. Can be made.

  As one type of the horizontal blind, a horizontal blind is known in which the upper slat group and the lower slat group can be adjusted at different angles (see, for example, Patent Document 1).

JP 2009-235670 A

  As described above, there is a horizontal blind in which the upper slat group and the lower slat group can be adjusted at different angles.

  In such a conventional horizontal blind, a first ladder cord that supports the upper slat group and a second ladder cord that supports the lower slat group are provided, and the upper ends of the first and second ladder cords are respectively taken. By manipulating the rotation of a plurality of hanging drums to be worn, the angle of the upper slat group and the lower slat group can be adjusted at different angles.

  A tilt pole supported by being suspended from one end of the head box is used for this angle adjustment operation. When the tilt pole is rotated, the angle adjustment shaft is rotated via the gear box, and the rotation of the angle adjustment shaft causes the suspension drums to rotate with rotation, thereby allowing the upper slat group and the lower slat group to be rotated. The angle can be adjusted at different angles.

  However, in view of the burden on the wrist and fingers of the operator, such a tilt pole rotation operation is a dedicated tilt that enables the movement of the tilt code instead of the rotation operation, similar to the bottom rail lifting operation. An operation code pulling operation is also conceivable.

  On the other hand, in order to configure with a pull operation using a tilt operation code, the slat weight and the loss in the handling of the tilt code become the operation force necessary for the pull operation, so the above operation burden has been reduced. However, there is a problem that the operation force increases.

  For this reason, a technique for reducing the operation force while reducing the operation load related to the angle adjustment operation of the slat is desired.

  In view of the above problems, an object of the present invention is to provide a horizontal blind that supports a plurality of slats suspended from a head box via a ladder cord.

  The horizontal blind according to the present invention is a horizontal blind that supports a plurality of slats suspended from a head box via a ladder cord, and includes a plurality of slats supported from the head box via the ladder cord. Among them, a tilt code that can be suspended to adjust the angle of one or more slats, a tilt operation code that can be suspended from the head box so that the angle can be manipulated, and a tilt load by converting a movement load of the tilt code. And a tilt operation load reducing device that reduces the operation force of the cord.

  In the horizontal blind according to the present invention, the tilt operation load reducing device includes a first pulley for removably attaching the tilt cord, and a second pulley for removably attaching the tilt operation cord. The first pulley and the second pulley are configured to rotate in conjunction with each other, and a winding diameter of the second pulley is larger than a winding diameter of the first pulley. Features.

  In the horizontal blind according to the present invention, the first pulley and the second pulley are configured to rotate in conjunction with each other on the same central axis.

  In the horizontal blind according to the present invention, the first pulley and the second pulley are configured to rotate in conjunction with each other by a gear mechanism.

  In the horizontal blind according to the present invention, the first pulley and the second pulley are configured to rotate in conjunction with each other by a belt mechanism.

  Further, in the horizontal blind according to the present invention, a stopper device capable of locking the movement of the cord is provided on one of the tilt cord and the tilt operation cord, and the stopper device is provided in the case of the tilt operation load reducing device. It is characterized by being housed in.

  ADVANTAGE OF THE INVENTION According to this invention, while reducing the operation burden regarding the angle adjustment operation of a slat, operation force can be reduced.

It is a front view which shows schematic structure of the horizontal blind of one Embodiment by this invention. (A) is a side view which shows schematic structure of the supporting member in the horizontal blind of one Embodiment by this invention, (b), (c) is explanatory drawing which shows the connection state of a slat, a ladder cord, and a tilt cord. It is. (A) is explanatory drawing of the descent | fall operation | movement in the horizontal blind of one Embodiment by this invention, (b) is explanatory drawing of horizontal operation | movement in the horizontal blind of one Embodiment by this invention. (A) is explanatory drawing of the fully-closed operation | movement in the horizontal blind of one Embodiment by this invention, (b) is explanatory drawing of reverse fully-closed operation in the horizontal blind of one Embodiment by this invention. (A) is explanatory drawing of the upper shielding and lower lighting operation in the horizontal blind of one embodiment by this invention, (b) is description of the upper lighting and lower shielding operation in the horizontal blind of one embodiment by this invention. FIG. (A) is a front view which shows the periphery structure of the tilt operation load reduction apparatus of Example 1 in the horizontal blind of one Embodiment by this invention, (b) is implementation in the horizontal blind of one Embodiment by this invention. 6 is a plan view showing a peripheral configuration of the tilt operation load reducing device of Example 1. FIG. (A) is a front view explaining the pulling-out operation | movement of the tilt code | cord | chord by the tilt operation load reduction apparatus of Example 1 in the horizontal blind of one Embodiment by this invention, (b) is one Embodiment by this invention. It is a top view explaining the drawing-in operation | movement of the tilt code | cord | chord by the tilt operation load reduction apparatus of Example 1 in a horizontal blind. (A) is a front view which shows the periphery structure of the tilt operation load reduction apparatus of Example 2 in the horizontal blind of one Embodiment by this invention, (b) is implementation in the horizontal blind of one Embodiment by this invention. 6 is a plan view showing a peripheral configuration of a tilt operation load reducing device of Example 2. FIG. (A) is a front view which shows the periphery structure of the tilt operation load reduction apparatus of Example 3 in the horizontal blind of one Embodiment by this invention, (b) is implementation in the horizontal blind of one Embodiment by this invention. 10 is a plan view showing a peripheral configuration of a tilt operation load reducing device of Example 3. FIG. (A) is a front view which shows the periphery structure of the tilt operation load reduction apparatus of Example 4 in the horizontal blind of one Embodiment by this invention, (b) is implementation in the horizontal blind of one Embodiment by this invention. 10 is a plan view showing a peripheral configuration of a tilt operation load reducing device of Example 4. FIG.

  Hereinafter, a horizontal blind according to an embodiment of the present invention will be described with reference to the drawings. 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.

(overall structure)
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 multi-stage slat 4 is suspended and supported via a ladder cord 12 suspended from the central portion of the head box 1 and both left and right sides, and a bottom rail 14 is provided at the lower end of the ladder cord 12. Is supported by suspension.

  Further, a lifting / lowering cord 15 is suspended from the head box 1 along with the ladder cord 12 on the outdoor side, and a bottom rail 14 is attached to the lower end of the lifting / lowering cord 15.

  A support member 5 for suspending and supporting the ladder cord 12 and the lifting / lowering cord 15 is disposed in the head box 1, and a hexagonal bar-shaped drive shaft 17 is inserted into the support member 5.

  One end of a tilt cord 16 is connected to the ladder cord 12 suspended from the left and right side portions of the head box 1. More specifically, the slat 4 is divided into an upper slat region 4B composed of an upper slat group and a lower slat region 4A composed of a lower slat group, and at a position where the upper slat region 4B and the lower slat region 4A are separated, One end of the tilt cord 16 is connected to one of the ladder cords 12 (in this example, on the indoor side) among the ladder cords 12 that respectively support both end portions of the slat 4 in the front-rear width direction by the attachment portions 16a. The other end of the tilt cord 16 is attached to a tilt operation load reducing device 10 to be described in detail later via a pulley 53 (see FIG. 2A) in the support member 5 that hangs down the tilt cord 16. Instead of the pulley 53, a guide groove or the like for simply guiding the tilt cord 16 may be used.

(Support member)
FIG. 2A is a side view showing a schematic configuration of the support member 5 in the horizontal blind according to the embodiment of the present invention. FIGS. 2B and 2C show the slat 4, the ladder cord 12, and the tilt cord. It is explanatory drawing which shows the connection state of 16. FIG. As shown in FIGS. 1 and 2A, a tilt drum 52 and a winding shaft 51 that are integrally formed on the support member 5 are rotatably supported by the case 20, and the tilt drum 52 and the winding shaft 51 are supported. The drive shaft 17 is inserted through the non-rotatable shaft. Therefore, when the drive shaft 17 is rotated, the tilt drum 52 and the winding shaft 51 are rotated together.

  An elastic torsion coil spring (not shown) is fitted into the tilt drum 52, and the ladder cord 12 is engaged with the tilt drum 52 by engaging the ladder cord 12 with both ends of the torsion coil spring. . The torsion coil spring generates a predetermined frictional force on the tilt drum 52, and as the tilt drum 52 rotates, the warp yarn of the ladder cord 12 is moved up and down. Further, when each slat 4 is rotated to a substantially vertical direction and one end of the torsion coil spring comes into contact with the protrusion inside the case 20 and the torsion coil spring expands in diameter, the warp yarns of the ladder cord 12 extend in the same direction. Thus, the tilting drum 52 is idled with respect to the torsion coil spring. For details of the suspension member of the ladder cord 12 by such a torsion coil spring, refer to, for example, Japanese Patent Application Laid-Open No. 2010-150842.

  The upper end portion of the lifting / lowering cord 15 is wound around the winding shaft 51. When the winding shaft 51 is rotated in the winding direction of the lifting / lowering cord 15, the lifting / lowering cord 15 is wound around the winding shaft 51 and the bottom rail 14 is pulled up, and each slat 4 is lowered by the bottom rail 14. Are pushed up sequentially. When the winding shaft 51 is rotated in the rewinding direction of the lifting / lowering cord 15, the lifting / lowering cord 15 is unwound from the winding shaft 51, the bottom rail 14 is lowered, and each slat 4 is sequentially laddered from the upper one. It returns to the state supported by the cord 12.

  Further, when the bottom rail 14 is lowered, the tilt drum 52 is rotated in the same direction as the take-up shaft 51, and the convex surface of each slat 4 is rotated via the ladder cord 12 in a fully closed direction that becomes the outdoor side. When the slats 4 are pulled up together with the bottom rail 14, each slat 4 is rotated in the reverse fully closed direction in which the convex surface is the indoor side.

  In FIG. 2A, the tilt code 16 is shown in parallel with the ladder code 12 in order to enhance the understanding of the invention. However, when such a form is implemented, FIG. , (C), it is preferable to improve the aesthetic appearance by knitting the tilt cord 16 into the ladder cord 12.

  More specifically, the tilt cord 16 reaches the vicinity of the uppermost slat 4 in the lower slat region 4A while weaving between the wefts 12a and 12b supporting the slats 4 in the upper slat region 4B. One end thereof is connected to the ladder cord 12 by the attachment portion 16a. That is, in the upper slat region 4B, the tilt cord 16 is knitted between the weft yarns 12a, 12b of the upper slat 4 from one direction and then knitted between the weft yarns 12a, 12b of the lower slat 4 from the other direction. Yes. In the example shown in FIGS. 2B and 2C, the tilt cord 16 is knitted for each slat 4 of the upper slat region 4B. The tilt cord 16 can be knitted between the weft yarns 12a and 12b of the slat 4 at arbitrary intervals such as every other.

  Referring to FIG. 1, an operating device 7 for rotating the drive shaft 17 is attached to the right end portion of the head box 1. A pulley 3 is rotatably supported on the base end side of the operating device 7, and an endless operation cord (for example, a ball chain) 2 is hung on the pulley 3 and is suspended downward. The pulley 3 can be driven to rotate by operating the operation cord 2.

  A gear (not shown) is integrally formed on the pulley 3, and a transmission gear (not shown) rotatably supported in the head box 1 is meshed with the gear. Accordingly, when the pulley 3 is rotated, the transmission gear is rotated. The operation device 7 is configured to transmit the rotation of the transmission gear to the drive shaft 17. In addition, a stopper device (not shown) is provided in the operating device 7, and this stopper device prevents the bottom rail 14 from dropping its own weight when the operation cord 2 is released after the bottom rail 14 is lifted. Performs a known action.

  With such a configuration, when the operation cord 2 is operated, the drive shaft 17 is rotated, so that the multi-stage slats 4 supported by the ladder cord 12 suspended from the head box 1 can be moved up and down, or can be fully closed or reversed. The amount of solar radiation taken into the room can be adjusted by tilting in the closed state.

  For example, as shown in FIG. 3A, by operating the operation cord 2, it is possible to rotate all the slats 4 in the vertical direction in the direction in which the indoor side is a concave surface and to operate the bottom rail 14 to be lowered. it can. Conversely, it is possible to operate all the slats 4 so as to raise the bottom rail 14 by rotating the slats 4 in the vertical direction in a direction in which the indoor side is a convex surface.

  Further, as shown in FIG. 3B, after the bottom rail 14 is lowered to the lower limit by the operation of the operation cord 2, all the slats 4 can be operated to be rotated and held in the horizontal direction. .

  Further, as shown in FIG. 4A, after the bottom rail 14 is lowered to the lower limit by the operation of the operation cord 2, all the slats 4 are rotated in the vertical direction in the direction in which the indoor side is a convex surface. As shown in FIG. 4 (b), after the bottom rail 14 is lowered to the lower limit, all the slats 4 are fully closed by rotating in the vertical direction with the interior side as a concave surface. Can be manipulated to hold in state.

  Further, by operating the tilt operation cord 8 suspended from the left end side of the head box 1, the angle of each slat 4 in the upper slat region 4B and each slat 4 in the lower slat region 4A can be adjusted at different angles. It is like that. For example, as shown in FIG. 5 (a), the bottom rail 14 is lowered to the lower limit by the operation of the operation cord 2, and all the slats 4 are rotated in the vertical direction in the direction in which the indoor side is convex. From the state, the tilt code 16 is pulled to the head box 1 side by the operation of the tilt operation code 8, and the slats 4 in the lower slat region 4A are in the horizontal state (lighting state) while the slats 4 in the upper slat region 4B are kept in the shielding state. ) And can be operated to hold in the upper shielding / lower lighting state. Further, as shown in FIG. 5B, the tilt operation code is changed from the horizontal state (lighting state) in which the bottom rail 14 is lowered to the lower limit by the operation of the operation code 2 and all the slats 4 are rotated in the horizontal direction. 8, the tilt cord 16 is pulled to the head box 1 side, and each slat 4 in the lower slat region 4 </ b> A is shielded while keeping each slat 4 in the upper slat region 4 </ b> B in the lighted state. Can be manipulated to hold.

  In order to realize such a tilt operation, as shown in FIG. 1, the left end portion of the head box 1 is provided with a guide portion 13 for guiding a tilt operation code 8 suspended from the head box 1 and a guide portion 13. A stopper device 11 for inserting the tilt operation cord 8 and a tilt operation load reducing device 10 are provided.

  The guide portion 13 protrudes obliquely downward from one end of the head box 1, and the tilt operation cord 8 is suspended from the guide portion 13. A tilt operation grip 9 is attached to one end of the tilt operation cord 8.

  The other end of the tilt operation cord 8 is attached to the tilt operation load reducing device 10 via the stopper device 11. The stopper device 11 operates the tilt operation cord 8 and pulls the tilt cord 16 toward the head box 1, and then releases the tilt operation grip 9, so that the tilt cord 16 moves by its own weight of the bottom rail 14 and the slat 4. It performs a known action of locking so as to prevent this. The stopper device 11 is unlocked by slightly pulling the tilt cord 16 toward the head box 1 (that is, pulling the tilt operation cord 8 from the head box 1 side), and the bottom rail 14 or the slat 4 is tilted by its own weight. The cord 16 is configured to be movable.

  The tilt operation load reducing device 10 functions to reduce a predetermined amount of operation force when the tilt code 16 is moved by a pulling operation of the tilt operation code 8.

  Hereinafter, each embodiment of the tilt operation load reducing device 10 will be described in detail.

(Tilt operation load reducing device of Embodiment 1)
FIG. 6A is a front view illustrating a peripheral configuration of the tilt operation load reducing device 10 according to the first embodiment, and FIG. 6B is a plan view thereof. In the tilt operation load reducing device 10 of the first embodiment, a first pulley 74, a second pulley 73, and a plurality of guide bars 75 are mainly housed in a case 71.

  The other ends of the two tilt cords 16, one end of which is connected to the ladder cord 12 suspended from the left and right sides of the head box 1, are regulated by the guide bar 75 in the tilt operation load reducing device 10, and the first pulley 74. It is attached so that it can be wound up.

  Further, the other end of the tilt operation cord 8 having one end attached to the tilt operation grip 9 is regulated by the guide bar 75 in the tilt operation load reducing device 10 through the guide portion 13 and the stopper device 11, and the second pulley 73. It is attached so that it can be wound up.

  The first pulley 74 and the second pulley 73 are provided side by side so as not to rotate relative to each other based on the central shaft 72. When the first pulley 74 rotates, the second pulley 73 rotates, and the second pulley If 73 rotates, the 1st pulley 74 will rotate. Further, the winding diameter of the second pulley 73 is configured to be approximately twice the winding diameter of the first pulley 74.

  In the tilt operation load reducing device 10 of the first embodiment configured as described above, as shown in FIG. 7A, when the tilt cord 16 is pulled out by the weight of the bottom rail 14 or the slat 4, the first pulley Since the 74 and the second pulley 73 rotate counterclockwise in the drawing, the tilt operation cord 8 is drawn into the head box 1 side, and the position of the tilt operation grip 9 is also raised.

  On the other hand, as shown in FIG. 7B, when the tilt operation grip 9 is operated and the tilt operation cord 8 is pulled out from the head box 1, the first pulley 74 and the second pulley 73 rotate clockwise in the drawing. Therefore, the tilt code 16 is pulled into the head box 1 side.

  At this time, the pulling operation force by the tilt operation grip 9 is configured such that the winding diameter of the second pulley 73 is approximately twice the winding diameter of the first pulley 74. Compared with the case of direct pull-in, almost half of the operating force is required.

  Therefore, the operation force of the pulling operation by the tilt operation grip 9 can be reduced, and the operation can be performed to maintain the upper shielding / lower lighting state or the upper lighting / lower shielding state shown in FIG. Thereby, while reducing the operation burden regarding the angle adjustment operation of the slat 4, the operation force can be reduced.

(Tilt operation load reducing device of Embodiment 2)
FIG. 8A is a front view illustrating a peripheral configuration of the tilt operation load reducing device 10 according to the second embodiment, and FIG. 8B is a plan view thereof. In addition, the same reference number is attached | subjected to the component similar to Example 1. FIG. The tilt operation load reducing device 10 of the second embodiment mainly accommodates a first pulley 74, a second pulley 73, a plurality of guide bars 75, and a stopper device 11 in a case 71 thereof.

  The tilt operation load reducing device 10 according to the second embodiment is an example in which a stopper device 11 is disposed on the lower side of the tilt operation load reducing device 10 to increase the accommodation efficiency in the head box 1.

  Similarly to the first embodiment, the other ends of the two tilt cords 16, one end of which is connected to the ladder cord 12 suspended from the left and right sides of the head box 1, are guided by a guide bar 75 in the tilt operation load reducing device 10. It is regulated and attached to the first pulley 74 so that it can be wound.

  The other end of the tilt operation cord 8 having one end attached to the tilt operation grip 9 is passed through the guide portion 13 and is regulated by the guide bar 75 in the tilt operation load reducing device 10 and inserted into the stopper device 11. It is regulated by the upper and lower guide bars 75 and attached to the second pulley 73 so that it can be wound up.

  Also in the second embodiment, the first pulley 74 and the second pulley 73 are provided side by side so as not to be able to rotate relative to each other based on the central shaft 72. If the first pulley 74 rotates, the second pulley 73 rotates. When the second pulley 73 rotates, the first pulley 74 rotates. Further, the winding diameter of the second pulley 73 is configured to be approximately twice the winding diameter of the first pulley 74.

  The tilt operation load reducing device 10 according to the second embodiment configured as described above operates in the same manner as in the first embodiment. The operation force of the pull operation by the tilt operation grip 9 is such that the winding diameter of the second pulley 73 is the first. Since it is configured to be approximately twice the winding diameter of the pulley 74, substantially half of the operating force is required as compared with the case where the tilt cord 16 is pulled directly.

  Further, in the tilt operation load reducing device 10 according to the second embodiment, the stopper device 11 is disposed on the lower side of the tilt operation load reducing device 10 so as to increase the accommodation efficiency in the head box 1. The degree of freedom of installation of each member such as can be increased.

(Tilt operation load reducing device of Embodiment 3)
FIG. 9A is a front view illustrating a peripheral configuration of the tilt operation load reducing device 10 according to the third embodiment, and FIG. 9B is a plan view thereof. In addition, the same reference number is attached | subjected to the component similar to Example 1,2. In the tilt operation load reducing device 10 of the third embodiment, a first pulley 74, a second pulley 73, gears 76 and 77, and a plurality of guide bars 75 are mainly housed in a case 71.

  In the tilt operation load reducing device 10 of the third embodiment, the first pulley 74 and the second pulley 73 are connected by a gear mechanism instead of being provided on the same axis as the central shaft 72 as in the first and second embodiments. I am letting. More specifically, the first pulley 74 and the second pulley 73 are configured to rotate about individual central axes, and gears 76 and 77 that rotate in conjunction with the rotation of the first pulley 74 and the second pulley 73 respectively. It is provided to mesh with each other.

  That is, when the second pulley 73 rotates, the gear 76 rotates, so that the gear 77 meshing with the gear 76 rotates, and the rotation of the gear 77 rotates the first pulley 74. Conversely, when the first pulley 74 rotates, the gear 77 rotates, so that the gear 76 meshing with the gear 77 rotates, and the rotation of the gear 76 rotates the second pulley 73.

  As in the first and second embodiments, the other ends of the two tilt cords 16, each having one end connected to the ladder cord 12 suspended from the left and right sides of the head box 1, are connected to the tilt operation load reducing device 10. It is regulated by the guide bar 75 and attached to the first pulley 74 so that it can be wound.

  Similarly to the first and second embodiments, the other end of the tilt operation cord 8 having one end attached to the tilt operation grip 9 passes through the guide portion 13 and the stopper device 11, and the guide bar in the tilt operation load reducing device 10. It is regulated by 75 and attached to the second pulley 73 so that it can be wound.

  Also in the third embodiment, the winding diameter of the second pulley 73 is configured to be approximately twice the winding diameter of the first pulley 74.

  The tilt operation load reducing device 10 according to the third embodiment configured as described above operates in the same manner as in the first and second embodiments. The operation force of the pull operation by the tilt operation grip 9 is determined by the winding diameter of the second pulley 73. Since it is configured to be approximately twice the winding diameter of the first pulley 74, substantially half of the operating force is required compared with the case where the tilt cord 16 is pulled directly.

(Tilt operation load reducing device of Example 4)
FIG. 10A is a front view illustrating a peripheral configuration of the tilt operation load reducing device 10 according to the fourth embodiment, and FIG. 10B is a plan view thereof. In addition, the same reference number is attached | subjected to the component similar to Example 1,2,3. In the tilt operation load reducing device 10 of the fourth embodiment, a first pulley 74, a second pulley 73, pulleys 78 and 79, a belt 80, and a plurality of guide bars 75 are mainly housed in a case 71.

  The tilt operation load reducing device 10 of the fourth embodiment is a belt in which two pulleys 78 and 79 are connected by a belt 80 instead of connecting the first pulley 74 and the second pulley 73 by the gear mechanism as in the third embodiment. It is connected by a mechanism. More specifically, the first pulley 74 and the second pulley 73 are configured to rotate about individual central axes, and pulleys 78 and 79 that rotate in conjunction with the rotation of the first pulley 74 and the second pulley 73 are provided. The belt 80 is provided to rotate in conjunction with each other.

  That is, when the second pulley 73 rotates, the pulley 78 rotates, whereby the pulley 79 connected to the pulley 78 by the belt 80 rotates, and the rotation of the pulley 79 causes the first pulley 74 to rotate. Conversely, when the first pulley 74 rotates, the pulley 79 rotates, whereby the pulley 78 connected to the pulley 79 by the belt 80 rotates, and the rotation of the pulley 78 causes the second pulley 73 to rotate.

  As in the first, second, and third embodiments, the other ends of the two tilt cords 16 each connected to the ladder cord 12 suspended from the left and right sides of the head box 1 are connected to the tilt operation load reducing device 10. It is regulated by the inner guide bar 75 and attached to the first pulley 74 so as to be capable of being wound.

  Further, as in the first, second, and third embodiments, the other end of the tilt operation cord 8 attached to one end of the tilt operation grip 9 passes through the guide portion 13 and the stopper device 11 and is placed in the tilt operation load reducing device 10. It is regulated by the guide bar 75 and attached to the second pulley 73 so that it can be wound up.

  Also in the fourth embodiment, the winding diameter of the second pulley 73 is configured to be approximately twice the winding diameter of the first pulley 74.

  The tilt operation load reducing device 10 of the fourth embodiment configured as described above operates in the same manner as in the first, second, and third embodiments, and the operation force of the pull operation by the tilt operation grip 9 is the winding of the second pulley 73. Since the take-up diameter is configured to be approximately twice the take-up diameter of the first pulley 74, substantially half the operating force is required as compared with the case where the tilt cord 16 is pulled directly.

  The present invention has been described above with reference to specific embodiments. 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, the tilt cord 16 may be composed of three or more instead of two, and as in Patent Document 2, the slats 4 of the upper slat region 4B and the lower slat region 4A are supported by individual cords. It is good. Moreover, the slat 4 can be made of aluminum or wood, and may have a form on a flat plate in addition to a form having a convex surface as in the above-described embodiment.

  Alternatively, it is possible to tilt the ladder cord 12 in the vicinity of the uppermost slat 4 so as to adjust the angles of all the slats 4 supported by the ladder cord 12 without distinguishing between the upper slat region 4B and the lower slat region 4A. The cord 16 may be configured to be connected.

  In each of the above-described embodiments, a specific example of the positional relationship between the tilt operation load reducing device 10 and the stopper device 11 has been described. However, the vertical / horizontal positional relationship may be changed. For example, in Examples 3 and 4 described above, the stopper device 11 may be arranged at the lower or upper stage of the tilt operation load reducing device 10.

  Therefore, regardless of the vertical / left / right positional relationship (preferably, the vertical positional relationship), the stopper device 11 is accommodated in the case of the tilt operation load reducing device 10, so The accommodation efficiency can be increased.

  Further, in each of the above-described embodiments, an example has been described in which the operation force of the pulling operation by the tilt operation grip 9 is approximately half that of the case where the tilt cord 16 is directly retracted. The winding diameter of the second pulley 73 is smaller than the winding diameter of the first pulley 74 so that the operation force of the pulling operation by the tilt operation grip 9 is less than that when the tilt cord 16 is pulled directly. Also, the diameter can be increased.

  In each of the above-described embodiments, an example in which the operation is performed using one tilt operation code 8 has been described. However, the endless tilt operation code 8 is configured, and the tilt operation load is determined by the operation of the endless tilt operation code 8. A conversion mechanism such as a gear may be provided so as to reduce the amount of moving load of the tilt cord 16 by the reduction device 10.

  According to the present invention, it is possible to reduce the operation load related to the angle adjustment operation of the slats and reduce the operation force. Therefore, the present invention is useful for a horizontal blind that supports a plurality of slats suspended from the head box.

DESCRIPTION OF SYMBOLS 1 Headbox 2 Operation code 3 Pulley 4 Slat 4A Lower slat area 4B Upper slat area 5 Support member 7 Operation device 8 Tilt operation code 9 Tilt operation grip 10 Tilt operation load reduction device 11 Stopper device for tilt operation code 12 Ladder code 13 Guide part for tilt operation code 15 Lift code 16 Tilt code 16a Mounting part 17 Drive shaft 71 Case of tilt operation load reducing device 72 Center shaft 73 Second pulley 74 First pulley 75 Guide bar 76, 77 Gear 78, 79 Pulley 80 belt

In the tilt operation load reducing device 10 of the third embodiment, the first pulley 74 and the second pulley 73 are connected by a gear mechanism instead of being provided on the same axis as the central shaft 72 as in the first and second embodiments. I am letting. More specifically, the first pulley 74 and the second pulley 73 are configured to rotate about individual central axes, and gears 7 7 and 7 that rotate in conjunction with the rotation of the first pulley 74 and the second pulley 73, respectively. 6 are provided so as to mesh with each other.

In Example 3, the winding diameter of the first pulley 7 4 is configured so as to be substantially twice the winding diameter of the second pulley 7 3.

Tilting load reduction device 10 of the third embodiment thus constructed operates in the same manner as in Examples 1 and 2, the operating force of the pulling operation by tilting the grip 9, the winding diameter of the first pulley 7 4 There consists in being configured so as to be substantially twice the winding diameter of the driven pulley 7 3, to avoid at about half the operating force in comparison with the case where pulling the tilt cord 16 directly.

The tilt operation load reducing device 10 of the fourth embodiment is a belt in which two pulleys 78 and 79 are connected by a belt 80 instead of connecting the first pulley 74 and the second pulley 73 by the gear mechanism as in the third embodiment. It is connected by a mechanism. More specifically, the first pulley 74 and the second pulley 73 are configured to rotate about individual central axes, and the pulleys 7 9 and 7 rotate in conjunction with the rotation of the first pulley 74 and the second pulley 73, respectively. 8 are provided to rotate in conjunction with each other by a belt 80.

In Example 4, the winding diameter of the first pulley 7 4 is configured so as to be substantially twice the winding diameter of the second pulley 7 3.

Also in tilt operation load reduction device 10 of the fourth embodiment thus constructed operates in the same manner as in Example 1, 2, 3, the operation force of the pulling operation by tilting the grip 9, the first pulley 7 4 since the winding diameter is configured to be substantially twice the winding diameter of the driven pulley 7 3, so that requires only about half of the operating force as compared with the case where pulling the tilt cord 16 directly .

Further, in each of the above-described embodiments, an example has been described in which the operation force of the pulling operation by the tilt operation grip 9 is approximately half that of the case where the tilt cord 16 is directly retracted. is not limited to this, the operation force of the pulling operation by tilting the grip 9, expansion than the winding diameter of the other pulley the winding diameter of one pulley to reduce than when directly draw the tilt cord 16 It can be a diameter.

Claims (6)

A horizontal blind that supports a plurality of slats suspended from a head box via a ladder cord,
A tilt cord suspended from the head box so as to be capable of adjusting the angle of one or more slats of a plurality of slats supported suspended from the ladder cord;
A tilt operation code suspended from the head box so that the angle adjustment can be operated;
A tilt operation load reducing device that reduces the operating force of the tilt operation code by converting the movement load of the tilt code;
A horizontal blind characterized by comprising: The tilt operation load reducing device is
A first pulley for removably attaching the tilt cord;
A second pulley for removably attaching the tilt operation cord;
The first pulley and the second pulley are configured to rotate in conjunction with each other,
The horizontal blind according to claim 1, wherein a winding diameter of the second pulley is larger than a winding diameter of the first pulley.   The horizontal blind according to claim 2, wherein the first pulley and the second pulley are configured to rotate in conjunction with each other on the same central axis.   The horizontal blind according to claim 2, wherein the first pulley and the second pulley are configured to rotate in conjunction with each other by a gear mechanism.   The horizontal blind according to claim 2, wherein the first pulley and the second pulley are configured to rotate in conjunction with each other by a belt mechanism.   One of the tilt cord and the tilt operation code is provided with a stopper device capable of locking the movement of the cord, and the stopper device is housed in a case of the tilt operation load reducing device. The horizontal blind according to any one of claims 1 to 5, wherein: