JP2012007377A - Horizontal type blind - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce operation load in a horizontal type blind where a lifting cord is disposed at a position offset from the center part of the longitudinal direction of a slat.SOLUTION: A horizontal type blind comprises a lifting drum 20 that rotates in conjunction with the rotation of a rotation axis 12 supported rotatably within a headbox 10, and one end of a lifting cord 22 is windingly/unwindingly connected to the lifting drum 20. The other end of the lifting cord 22 derived from the headbox 10 is arranged along the rear edge of a slat group 18, and is turned at the lower part of the slat group 18, after which the other end of the lifting cord 22 is arranged along the front edge of the slat group and fixed to the headbox 10.

Description

  The present invention relates to a horizontal blind in which a lifting / lowering cord is disposed at a position offset from a center portion in the front-rear direction of a slat.

  In horizontal blinds having a large number of aligned slats, a lifting cord for raising and lowering the slats has passed through each slat passing through a lifting cord insertion hole formed in the center of the slat in the front-rear direction. Generally, one end of the lifting / lowering cord is connected to a bottom rail provided below the slat and the slat is lifted / lowered by lifting / lowering the bottom rail with the lifting / lowering cord.

  On the other hand, a horizontal blind shown in Patent Document 1 is known as an elevator cord disposed at a position offset from the central portion of the slat in the front-rear direction.

  This horizontal blind has a side edge notch that engages the vertical code on both sides of the ladder cord on each slat, and the positioning of the slat in the longitudinal direction is prevented by engaging the vertical code on both sides and the notch. , At least one lifting / lowering cord is positioned on one side of the horizontal blind, and the other lifting / lowering cord is positioned on the opposite side of the horizontal blind. At the same time, one end is connected to the bottom rail by passing through a loop extending from the vertical cord. Also, the other end of the lifting / lowering cord is guided to one end in the longitudinal direction by a guide roller or the like in the head box and led out to the outside through a stopper device. The lifting / lowering cord led out from the head box is pulled down. By operating, the bottom rail rises, and the slats are folded in order from the bottom by this bottom rail. On the other hand, by operating the lifting cord to release the stopper device, the bottom rail and slats are lowered by their own weight. It is supposed to be.

  Thus, in the thing of patent document 1, since the raising / lowering cord is located in the edge part of a slat and the hole which the raising / lowering cord penetrates is not formed in a slat, while being able to prevent the light leakage at the time of shielding The bottom rail is prevented from being tilted by distributing the lifting cords in the front-rear direction.

Japanese Utility Model Publication 3-35034

  However, in the horizontal blind described in Patent Document 1, since the slat is lifted by directly operating the other end of the lifting cord led out from the head box, when the slat is lifted, The operation of pulling down the other end of the cord has to be performed until the slat is folded into a desired position, and there is a problem that it is difficult to apply to a product having a large product size and heavy weight.

  The present invention is for solving such a problem, and an object of the present invention is to provide an elevating cord for elevating a slat in the case where the elevating cord is disposed at a position offset from the center part in the front-rear direction of the slat. It is to provide a horizontal blind that can reduce an operation load.

In order to achieve the above-described object, the invention according to claim 1 is a rotating shaft that is rotatably supported in the head box, a ladder cord that tilts in conjunction with the rotation of the rotating shaft, and an alignment state with the ladder cord. A slat group consisting of a number of slats supported by the head box, and a lifting cord that is suspended from the head box and can raise and lower the slats, and the lifting cord is disposed at a position offset from the center of the slat in the front-rear direction. In horizontal blinds,
It has a lifting drum that rotates in conjunction with the rotation of the rotating shaft, and one end of the lifting cord is connected to the lifting drum so that it can be wound and unwound.
The other end of the lifting / lowering cord led out from the head box is arranged along one side of the front and rear edges of the slat group, and after being turned below the slat group, It is arranged along the other side of them and is fixed to the head box.

  According to a second aspect of the present invention, in the horizontal blind according to the first aspect, the elevating cords arranged along the front and rear edges of the slat group are arranged along the vertical cords before and after the ladder cord. And

  According to a third aspect of the present invention, in the horizontal blind according to the second aspect, the elevating cords arranged along the front and rear vertical cords are insertion rings formed at predetermined intervals in the vertical direction on the front and rear vertical cords. It is characterized by being inserted.

  According to a fourth aspect of the present invention, in the horizontal blind according to any one of the first to third aspects, a notch is formed in at least one of the front and rear edges of the slat, along the notch. And a lifting cord is arranged.

  According to a fifth aspect of the present invention, in the horizontal blind according to any one of the first to fourth aspects, the lower end of the vertical cord before and after the ladder cord is attached to the bottom rail disposed below the slat group by a holder. The lifting / lowering cord is fixed and freely movable between the holder and the bottom rail, and passes between the holder and the bottom rail and is turned below the slat group.

  According to the present invention, the other end of the elevating cord disposed along one side of the front and rear edges of the slat group is turned below the slat group, and the other end of the front and rear edges of the slat group. Since it is arranged along the side and fixed to the head box, the lifting / lowering cord can be wound on the lifting / lowering drum by using the principle of the moving pulley, so that the operation load is 1 compared with the one that directly operates the lifting / lowering cord. Reduced to / 2. Thereby, it can be applied to a product having a large product size and a heavy weight.

  Further, the elevating drum can be rotated by electrically rotating the rotating shaft. In this case, since the load is small, a small drive source can be used, and the configuration can be made inexpensively with low noise.

  Moreover, since the raising / lowering cord is arranged along the front and rear edges of the slat group, the front and rear of the slat can be balanced during raising and lowering, and stable raising and lowering can be performed.

It is a front view which shows the slat horizontal and fully open state of the horizontal blind concerning 1st Embodiment of this invention. It is a front view which shows the slat full closed state of the horizontal blind which concerns on 1st Embodiment of this invention. It is a sectional side view of the horizontal blind at the time of slat horizontal and full open concerning 1st Embodiment. It is a sectional side view of the horizontal blind at the time of the slat full closure concerning a 1st embodiment. It is a fragmentary perspective view which shows the mode of the notch part vicinity of the slat edge part which concerns on 1st Embodiment. It is a front view which shows the state which folded the slat of the horizontal blind which concerns on 1st Embodiment. It is a fragmentary perspective view which shows the mode of the notch part vicinity of the slat edge part which concerns on other embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
1 to 5 show a first embodiment of the present invention.
The horizontal blind according to the present embodiment has a head box 10 fixed to a window frame or the like by a bracket 11, and an endless operation cord 14 hangs from one end of the head box 10. The operation cord 14 is wound around a pulley 15 disposed in the head box 10 and can be driven to rotate. The rotation of the pulley 15 can be transmitted to the rotary shaft 12 rotatably supported in the head box 10 via a clutch. The clutch prevents rotation from the rotating shaft 12 and transmits only the rotation from the pulley 15 to the rotating shaft 12. The rotary shaft 12 is provided with a plurality of lifting drums 20 that rotate in conjunction with the rotation of the rotary shaft 12 with a space in the left-right direction of the head box 10.

  Ladder cords 16 are suspended below the head box 10 from the position where each lifting drum 20 is disposed, and each ladder cord 16 is tilted in conjunction with rotation within a predetermined range angle of the rotary shaft 12. . Each ladder cord 16 is installed between the front and rear vertical cords 16a and 16b that hang down at a predetermined interval in the front-rear direction of the head box 10, and the front and rear vertical cords 16a and 16b at a predetermined interval in the vertical direction. And the middle cord 16c. Each middle cord 16c further comprises a pair of upper and lower cords that are slightly separated from each other. The front and rear vertical cords 16a and 16b are formed with insertion rings 16d and 16e, respectively, at positions spaced apart in the vertical direction.

  The ladder cord 16 supports a large number of slats 18 in an aligned state by inserting the slats 18 between the upper and lower cords of each middle cord 16c. Preferably, the vertical relationship of the upper and lower cords of each middle cord 16c is reversed to form a pair of crossing portions, and the slats 18 are inserted between the pair of crossing portions. The lower ends of the vertical cords 16a and 16b are fixed by a holder 30 to a bottom rail 24 disposed below the lowermost slat 18 of the slat 18 group.

  The elevating drum 20 includes a drum portion 26 in which one end of the elevating cord 22 is coupled so as to be wound and unwound, and a drum receiver 28 that rotatably supports the drum portion 26 and is fixed to the head box 10. Is done. Ladder cord guide portions 28a and 28b for restricting the front and rear vertical cords 16a and 16b to pass through the drum receiver 28 and to prevent the front and rear vertical cords 16a and 16b from opening in the front-rear direction by a predetermined amount or more. Is formed. Further, a first lifting / lowering cord guide portion 28c and a second lifting / lowering cord guide portion 28d through which the lifting / lowering cord 22 is inserted are formed outside the ladder cord guide portions 28a and 28b of the drum receiver 28 in the front-rear direction of the head box 10, respectively. Is done. The lifting / lowering cord guide portions 28c and 28d can surely suspend the lifting and lowering cord 22 to a position offset from the center of the slat 18 in the front-rear direction, and the ladder cord guide portions 28a and 28b cannot force the ladder cord 16. The lifting / lowering cord 22 can be disposed at a position offset from the central portion in the front-rear direction of the slat 18 without applying any force. Even when the diameter of the elevating drum 20 is large, the ladder cord guide portions 28a and 28b can narrow the interval between the vertical cords 16a and 16b before and after the ladder cord 16 to improve the rotation of the slats 18.

  The other end of the lifting / lowering cord 22 having one end connected to the lifting / lowering drum 20 is led out from the head box 10 through the first lifting / lowering cord guide portion 28c, and then the rear edge and the rear vertical cord 16b of the slat 18 group. Are inserted while passing through the insertion rings 16e, and when reaching the bottom rail 24, they are inserted between the bottom rail 24 and the holder 30 from the rear side of the bottom rail 24, and are movably inserted between these. Then, by being led out from the front side of the bottom rail 24, the lower part of the slat group is rotated. Thereafter, the elevator cord 22 ascends while passing through the insertion ring 16d along the front edge and the front vertical cord 16a of the slat 18 group, and the elevator cord 22 arranged up to the head box 10 passes through the second elevator cord guide portion 28d. After being introduced into the head box 10, it is connected to the retaining member 32. This restricts the other end of the lifting / lowering cord 22 from coming off from the second lifting / lowering cord guide portion 28 d, and the other end of the lifting / lowering cord 22 is fixed to the head box 10.

  Two guide rollers 34 as guide members are provided at a predetermined interval in the front-rear direction of the bottom rail 24 on the side facing the cord holder 30 which is the lower surface of the bottom rail 24. The state is sandwiched between the guide roller 34 and the holder 30. Thereby, when the lifting / lowering cord 22 moves, the guide roller 34 rotates and guides the movement of the lifting / lowering cord 22, so that the lifting / lowering cord 22 can move smoothly.

  As shown in FIG. 5, at least one notch 18a is formed at the rear edge of the slat 18, and the crossing portion of the middle cord 16c of the ladder cord 16 is hooked on the notch 18a. Thus, the horizontal displacement of the slat 18 is prevented.

  Next, the operation of the horizontal blind according to the first embodiment will be described.

  First, in order to rotate the slat 18 from the horizontal fully opened state as shown in FIG. 1 to the fully closed state shown in FIG. 2, the pulley 15 is driven to rotate by pulling down the rear side of the operation cord 14. The shaft 12 is rotated clockwise in FIG. As a result, as shown in FIG. 4, the rear vertical cord 16b is lowered, the front vertical cord 16a is raised and the ladder cord 16 is tilted, and each slat 18 is tilted, so that the slat 18 is fully closed. State.

  Alternatively, as shown in FIG. 1, the slat 18 may be operated to pull down the front side of the operation cord 14 from the horizontal fully opened state to rotate the pulley 15 and rotate the rotating shaft 12 counterclockwise in FIG. it can. As a result, the rear vertical cord 16b rises, the front vertical cord 16a descends, the ladder cord 16 tilts, and each slat 18 tilts, so that the slat can be fully closed.

  Next, in order to change the slat 18 from the horizontal fully open state as shown in FIG. 1 to the state where the slat 18 is folded as shown in FIG. 6, an operation of further pulling down the front side of the operation cord 14 is performed. 15 is rotated and the rotating shaft 12 is rotated counterclockwise in FIG. As a result, the drum portion 26 rotates integrally with the rotary shaft 12 in the counterclockwise direction in FIG. 3 and winds the lifting cord 22. Since the other end of the lifting / lowering cord 22 is fixed to the drum receiver 28, the portion of the lifting / lowering cord 22 arranged on the front vertical cord 16 a side becomes closer to the bottom rail 24 and the cord holder 30 as one end is wound. The length of the lifting / lowering cord 22 from the head box 10 to the bottom rail 24 is shortened as it passes through and moves toward the rear vertical cord 16b. Thereby, since the bottom rail 24 raises, the slat 18 can be folded and raised. At this time, the lifting / lowering cord 22 inserted between the bottom rail 24 and the holder 30 is guided by the guide roller 34 and can move smoothly.

  Thus, one end of the lifting / lowering cord 22 is connected to the lifting / lowering drum 20, and the other end of the lifting / lowering cord 22 is inserted between the bottom rail 24 and the holder 30 through the rear side of the slat 18, And the lifting / lowering cord 22 is wound around the lifting / lowering drum 20 by using the principle of the moving pulley, so that the lifting / lowering cord 22 is wound around the front side of the slat 18 and fixed to the drum receiver 28. The operation load is reduced to ½ compared to those directly operating the. For this reason, it can be applied to a product having a large product size and a heavy weight.

  Moreover, since the raising / lowering cord 22 is arranged along the front and rear edges of the slat 18, the front and rear of the slat 18 can be balanced during the raising and lowering and stable raising and lowering can be performed.

  Furthermore, by arranging the lifting cords along the front and rear edges of the slats 18 in the same manner, the design below the head box 10 can be made identical on the front and rear surfaces.

  In this example, the other end of the lifting / lowering cord 22 is fixed to the front side of the head box 10. However, the present invention is not limited to this, and the other end of the lifting / lowering cord 22 extends from the lifting / lowering drum 20 to the second lifting / lowering cord guide portion. After passing through 28d and leading out from the head box 10, it descends while passing through the insertion ring 16d along the front edge of the slat group and the vertical cord 16a on the front side. The head ring 10 may be fixed to the rear side of the head box 10 by ascending through the insertion ring 16e along the edge and the rear vertical cord 16b.

(Other embodiments)
FIG. 7 shows another embodiment of the arrangement of the vertical cords 16a and 16b and the lifting / lowering cord 22.
In this embodiment, the front and rear vertical cords 16a and 16b are not provided with the insertion rings 16d and 16e, and the elevating cord 22 is disposed between the front and rear vertical cords 16a and 16b and the edge of the slat 18, More specifically, it is disposed between the upper and lower cords of the middle cord 16 c and the edge of the slat 18. Further, in the portion where the notch 18a is formed in the slat 18, the elevating cord 22 is disposed between the upper and lower cords of the middle cord 16c and the wall surface of the notch 18a of the slat 18.

  With this configuration, the lifting / lowering cord 22 can be easily placed in the notch 18a of the slat 18, so that when the slat 18 is folded, the lifting / lowering cord 22 can be lifted / lowered even if the vertical cords 16a and 16b lie down. The cord 22 and the notch 18a are associated with each other, and thus the horizontal displacement of the slat 18 can be prevented.

  As another embodiment, instead of arranging the lifting / lowering cord along the vertical cord of the ladder cord, for example, a notch portion 18a is provided on each of the front and rear edges of the slat 18, and the lifting / lowering cord is connected to the notch portion 18a of the slat 18. It is also possible to arrange them along the front and rear edges of the slat group.

  In the above-described embodiment, the rotating shaft 12 is configured to be manually driven to rotate. However, the present invention is not limited to this configuration, and the rotating shaft 12 is connected to an electric motor to be driven to rotate electrically. It can also be. By using an electric motor in this way, manual operation can be made unnecessary, and for blinds and the like that are in an installation position where they cannot be easily reached such as high places where electric operation is difficult. Can also be applied. Since the load is small, a small electric motor can be used, and the noise can be reduced and the configuration can be reduced.

DESCRIPTION OF SYMBOLS 10 Head box 12 Rotating shaft 16 Ladder cord 16a, 16b Vertical cord 16d, 16e Insertion ring 18 Slat 18a Notch 20 Lifting drum 22 Lifting cord 24 Bottom rail 30 Holder

Claims (5)

A rotating shaft (12) rotatably supported in the head box (10), a ladder cord (16) tilted in conjunction with the rotation of the rotating shaft, and a number of slats supported in alignment with the ladder cord ( 18) and a lifting cord (22) that is suspended from the head box and can lift and lower the slat, and the lifting cord is disposed at a position offset from the center of the slat in the front-rear direction. In the blinds
A lifting drum (20) that rotates in conjunction with rotation of the rotating shaft is provided, and one end of the lifting cord is coupled to the lifting drum so as to be wound and unwound.
The other end of the lifting / lowering cord led out from the head box is arranged along one side of the front and rear edges of the slat group, and after being turned below the slat group, A horizontal blind that is arranged along the other side and fixed to a head box.   The horizontal blind according to claim 1, wherein the elevating cords arranged along the front and rear edges of the slat group are arranged along the vertical cords (16a, 16b) before and after the ladder cord.   The elevating cord arranged along the front and rear vertical cords is inserted through insertion rings (16d, 16e) formed at predetermined intervals in the vertical direction on the front and rear vertical cords. Horizontal blinds.   The notch part (18a) is formed in at least one of the front and rear edges of the slat, and the lifting / lowering cord is arranged along the notch part. Horizontal blinds as described in   The lower ends of the vertical cords before and after the ladder cord are fixed to a bottom rail (24) disposed below the slat group by a holder (30), and the lifting cord is movable between the holder and the bottom rail. The horizontal blind according to any one of claims 1 to 4, wherein the horizontal blind passes between the holder and the bottom rail and is turned below the slat group.

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