JP5214529B2 - Horizontal blind slat drive - Google Patents

Description

  The present invention relates to a slat drive device in which an elevating shaft for elevating and lowering a slat in a head box and a tilt shaft for adjusting the angle of the slat are provided independently.

  As a type of horizontal blind, a lifting shaft and a tilt shaft are arranged in parallel in the head box, the tilt shaft is rotated by operating the operating device, the angle of the slat is adjusted, and the lifting shaft is rotated by operating the operating device. In some cases, the slats are moved up and down (see Patent Document 1).

  In such a horizontal blind, a tilt shaft is disposed above the lifting shaft in the head box. Then, the lifting / lowering cord is spirally wound or unwound by the winding shaft rotated based on the rotation of the lifting / lowering shaft, and the slat is lifted / lowered. Further, the slat is rotated through the ladder cord by inserting the tilt shaft into the tilt drum and rotating the tilt drum with the tilt shaft.

  In addition, the winding shaft for winding the lifting cord inserted near the both ends of the slat prevents the head box from being enlarged in the longitudinal direction and supports the vicinity of both ends of the slat with the ladder cord. The support member is installed so as to extend from the take-up position toward the center of the head box. For this reason, the support members disposed at both ends of the head box are disposed with their left and right directions switched.

JP 2000-179259 A

  In the horizontal blind as described above, since the elevating axis and the tilt axis are disposed in the head box at positions spaced apart in the vertical direction, the head box is increased in size in the height direction, which is not preferable from an aesthetic point of view.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a horizontal blind slat drive device capable of preventing the enlargement of the head box and providing a common bearing member for supporting the tilt shaft while having a lift shaft and a tilt shaft in the head box. There is to do.

  According to the first aspect of the present invention, the head shaft is supported so that the lifting shaft and the tilt shaft can rotate in parallel, the tilt shaft is positioned obliquely below the lifting shaft, and the winding shaft of the lifting cord is rotated by the lifting shaft. In a horizontal blind that allows the slat to be moved up and down and rotates the tilt drum with the tilt shaft to adjust the angle of the slat, a bearing member that rotatably supports the tilt shaft has a support hole through which the tilt shaft is inserted. Are provided in two lines symmetrical with respect to a perpendicular line including the center of the lifting shaft.

  According to a second aspect of the present invention, the winding shaft is rotatably supported by a support member, the tilt drum is rotatably supported by the support member coaxially with the winding shaft, and the bearing member is mounted on the support member. The drive gear for rotating the tilt drum is rotatably supported in the support hole of the bearing member, and the tilt shaft is inserted into the center of the drive gear so as not to be relatively rotatable.

According to a third aspect of the present invention, the tilt drum is integrally provided with a driven gear that meshes with the drive gear.
According to a fourth aspect of the present invention, there are two locking means on the upper side of the bearing member that are engaged with the head box and fix the bearing member to the head box in line symmetry with respect to the vertical line including the center of the lifting shaft. Provided.

  According to a fifth aspect of the present invention, the tilt drum is rotatably supported by a support member, the bearing member is attached to the support member, and a drive gear for rotating the tilt drum is rotatably supported by a support hole of the bearing member. Then, the tilt shaft is inserted into the center of the drive gear so as not to be relatively rotatable.

  According to the present invention, there is provided a slat drive device for a horizontal blind which can prevent the enlargement of the head box and can have a common bearing member for supporting the tilt shaft while having a lift shaft and a tilt shaft in the head box. can do.

It is a front view which shows the horizontal blind of one Embodiment. It is a side view which shows the horizontal blind of one Embodiment. It is a top view which shows the horizontal blind of one Embodiment. It is a front view which shows the tilt drum and support cap which were attached to the support member. It is a disassembled perspective view which shows the tilt drum and support cap which were attached to the support member. It is a side view which shows a drive gear and a driven gear. It is a front view which shows the supporting member which supports only a tilt drum. It is a disassembled perspective view which shows the supporting member which supports only a tilt drum.

  Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings. In the horizontal blind shown in FIGS. 1 to 3, a multi-stage slat 3 is supported on a ladder tape 2 that is supported suspended from a head box 1, and a bottom rail 4 is attached to the lower end of the ladder tape 2.

  An elevating cord 5 is inserted into the slat 3 in the vicinity of the support position of the ladder tape 2, and the bottom rail 4 is suspended and supported at the lower end of the elevating cord 5. An upper end of the lifting / lowering cord 5 is wound around a winding shaft 7 rotatably supported by a support member 6 disposed in the head box 1.

  A hexagonal bar-shaped lifting shaft 8 is inserted into the winding shaft 7 so as not to be relatively rotatable. When the lifting / lowering shaft 8 is rotated, the winding shaft 7 is rotated. When the winding shaft 7 is rotated in the winding direction of the lifting / lowering cord 5, the lifting / lowering cord 5 is spirally wound around the winding shaft 7. Then, the bottom rail 4 and the slat 3 are pulled up. When the winding shaft 7 is rotated in the rewinding direction of the lifting / lowering cord 5, the lifting / lowering cord 5 is rewound and the bottom rail 4 and the slat 3 are lowered.

  An upper end of the ladder tape 2 is attached to the tilt drum 9 via a hook 18, and the tilt drum 9 is rotatably supported at one end of the support member 6. A spur gear 10 is integrally formed on one side of the tilt drum 9.

On the side of the support member 6, a support cap (bearing member) 11 is fixed to the head box 1, and the elevating shaft 8 is inserted through the support cap 11.
A hexagonal bar-shaped tilt shaft 12 is rotatably supported by the support cap 11 at an obliquely lower position of the elevating shaft 8, that is, a lower corner portion in the head box 1, and the tilt shaft 12 is engaged with the driven gear 10. The gear 13 is fitted so as not to be relatively rotatable. When the tilt shaft 12 is rotated, the tilt drum 9 is rotated via the drive gear 13 and the driven gear 10.

  One end of the elevating shaft 8 is connected to the first output shaft of the operation unit 14 attached to one end of the head box 1, and one end of the tilt shaft 12 is connected to the output shaft of the tilt unit 15. . The input shaft of the tilt unit 15 is connected to the second output shaft of the operation unit 14.

  A pulley 16 is rotatably supported at the end of the operation unit 14, and an operation chain 17 is hooked on the pulley 16. When the operation chain 17 is operated to rotate the pulley 16 in the forward and reverse directions, the elevating shaft 8 and the tilt shaft 12 can be driven to rotate.

  The operation unit 14 selects a function of decelerating the rotation of the pulley 16 and transmitting it to the elevating shaft 8 and the tilt unit 15, and a state in which the slat 3 and the bottom rail 4 are prevented from falling by their own weight and a state in which the operation is allowed. A function and a function of not rotating the elevating shaft 8 when the tilt shaft 12 is rotated via the tilt unit 15.

  The tilt unit 15 rotates the tilt shaft 12 based on the rotation of the second output shaft of the operation unit 14, and when the tilt shaft 12 is rotated by a predetermined angle, that is, the slat 3 is fully closed or reverse fully closed. A function is provided to prevent the rotation of the second output shaft from being transmitted to the tilt shaft 12 when rotated to the state.

  The operation of the horizontal blind provided with such an operation unit 14 and tilt unit 15 will be described. As shown in FIG. 2, when the operation chain 17 suspended downward is lowered (in the direction of arrow A), the tilt shaft 12 is rotated via the operation unit 14 and the tilt unit 15.

  Then, the tilt drum 9 is rotated with the rotation of the tilt shaft 12, and the slat 3 is rotated via the ladder tape 2. At this time, the slat 3 is rotated so that the convex surface is on the indoor side.

  When the tilt shaft 12 is rotated by a predetermined angle, that is, when the slat 3 is rotated to the fully closed state in the substantially vertical direction, the operation chain 17 is continuously operated in the same direction by the operation of the tilt unit 15. Also, the rotation of the tilt shaft 12 is stopped.

Further, the elevating shaft 8 is not rotated by the operation of the operation unit 14 until the slat 3 is fully closed.
After the slat 3 is rotated to the fully closed state, when the operation chain 17 is further operated in the direction of arrow A, the lifting shaft 8 is rotated and the winding shaft 7 is rotated in the winding direction of the lifting cord 5. . And the raising / lowering cord 5 is wound up by the winding shaft 7, the bottom rail 4 is pulled up, and the slat 3 is pulled up by the bottom rail 4 one by one.

  If the operation chain 17 is released while the bottom rail 4 and the slat 3 are pulled up to a desired height, the operation unit 14 moves to prevent the lifting shaft 8 from rotating in the lifting / lowering cord unwinding direction. Descent is prevented and held at the desired height.

  As shown in FIG. 2, when the operation chain 17 hanging downward is pulled downward (in the direction of arrow B), the tilt shaft 12 is rotated via the operation unit 14 and the tilt unit 15.

  Then, the tilt drum 9 is rotated with the rotation of the tilt shaft 12, and the slat 3 is rotated via the ladder tape 2. At this time, the slat 3 is rotated so that the convex surface becomes the outdoor side.

  When the tilt shaft 12 is rotated by a predetermined angle, that is, when the slat 3 is rotated to the reverse fully closed state in a substantially vertical direction, the operation chain 17 is continuously operated in the same direction by the operation of the tilt unit 15. However, the rotation of the tilt shaft 12 is stopped.

At this time, the elevating shaft 8 is not rotated by the operation of the operation unit 14 until the slat 3 is in the reverse fully closed state.
After the slat 3 is turned to the reverse fully closed state, when the operation chain 17 is further pulled in the direction of arrow B, the operation unit 14 is allowed to rotate in the lifting / lowering cord rewinding direction by the operation of the operation unit 14. 4 and the slat 3 are lowered by their own weight.

  Then, when the bottom rail 4 and the slat 3 are lowered to a desired height, the operation chain 17 is pulled in the direction of arrow A to bring the slat 3 into a fully closed state, and the operation chain 17 is pulled in the same direction and then released. 14 is in a state of preventing the lifting shaft 8 from rotating in the lifting / lowering cord rewinding direction, and the bottom rail 4 and the slat 3 are held at a desired height.

Next, detailed configurations of the support member 6 and the support cap 11 will be described with reference to FIGS.
The tilt drum 9 is formed of a synthetic resin into a cylindrical shape, and is rotatably supported by a cylindrical shaft portion 19 provided on one side of the support member 6. Flange 20a, 20b is formed on both sides of the outer peripheral surface of the tilt drum 9, and the driven gear 10 is integrally formed on the outer side of one flange 20b.

  Further, a rotation restricting piece 21 is formed on the side surface of the driven gear 10 in a range of approximately 90 degrees with respect to the rotation center of the driven gear 10. Then, the rotation restricting piece 21 is engaged with the rotation restricting piece 22 formed on the support cap 11 so that the rotation range of the tilt drum 9 is approximately 180 degrees, that is, the slat 3 is set in the horizontal direction. It can be rotated only within a range of 90 degrees in the fully closed direction and the reverse fully closed direction from the state.

  On the outer peripheral surface of the tilt drum 9, a mounting portion 24 for attaching the two hooks 18 facing each other is formed. The ladder tape 2 is suspended and supported from the tilt drum 9 via a hook 18.

  The support cap 11 is formed on one side surface of a rectangular parallelepiped main body portion 25 with a connecting shaft 26 that can be inserted into the shaft portion 19 of the support member 6, and the main body at the center of the connecting shaft 26. A through-hole 27 that continues to the portion 25 is formed. As shown in FIG. 6, the lifting shaft 8 is inserted through the through hole 27.

  Support holes 28a and 28b are provided on both sides of the lower portion of the main body 25 at positions equidistant from the center of the through hole 27, that is, at positions symmetrical with respect to the perpendicular L including the center of the elevating shaft 8. The shaft portion 29 of the drive gear 13 is rotatably supported in one support hole 28a.

  A hexagonal hole 30 is formed in the central portion of the shaft portion 29, and the tilt shaft 12 is inserted into the hexagonal hole 30 so as not to be relatively rotatable. When the tilt shaft 12 is rotated, the tilt drum 9 is rotated via the drive gear 13 and the driven gear 10, and the slat 3 is rotated via the ladder tape 2.

  On the lower side of the main body portion 25, a ridge 32 that can be fitted into a positioning groove 31 provided on one lower side of the support member 6 is formed. In a state where the ridge 32 is fitted into the positioning groove 31, The main body 25 is held by the support member 6.

  Further, on both sides of the upper side of the main body 25, locking projections 33a and 33b are respectively formed at positions equidistant from the center of the through hole 27, that is, at positions symmetrical with respect to the perpendicular L. Yes. As shown in FIG. 6, when the protrusion 32 is fitted in the positioning groove 31, either one of the locking protrusions 33 a and 33 b is engaged with the rib 34 on the upper edge of the head box 1. It has become. Therefore, the support cap 11 is fixed to the head box 1 so as not to move by the protrusion 32 fitted in the positioning groove 31 and the locking protrusion 33a or 33b engaged with the rib 34.

  In the horizontal blind as described above, as shown in FIG. 3, the winding shaft 7 and the support member 6 disposed in the vicinity of both ends of the head box 1 are installed by being changed in the left-right direction. That is, the winding shaft 7 is disposed so as to extend from the support position of the tilt drum 9 toward the center of the head box 1.

  With such a configuration, it is not necessary to secure an interval for accommodating the take-up shaft 7 between the position where the ladder tape and the lifting / lowering cord 5 are suspended and the end of the head box 1, so that it is supported on both sides of the slat 3. The ladder tape 2 is positioned in the vicinity of the end of the slat 3 so that the end of the slat 3 can be prevented from drooping.

  The support member 6 in a state of supporting the tilt drum 9 and the take-up shaft 7 is inserted through only the elevating shaft 8 and is formed symmetrically in the front-rear direction, and therefore interferes with the tilt shaft even if it is changed in the left-right direction. There is nothing. Therefore, it is easy to install in the left-right direction.

  The support cap 11 is changed to the left and right direction together with the support member 6, the shaft portion 29 of the drive gear 13 is inserted into the support hole 28 b and meshed with the driven gear 10, and the tilt shaft 12 is inserted into the drive gear 13. Then, the tilt shaft 12 and the drive gear 13 can be supported while changing in the left-right direction. At this time, the locking projection 33 b of the support cap 11 contacts the rib 34 of the head box 1 and is fixed in the head box 1.

  7 and 8 show a ladder tape suspending device 35 that suspends and supports only the ladder tape 2 at the central portion of the head box 1. The support member 36 of the ladder tape suspension device 35 has the same shape as one end of the support member 6 that supports the winding shaft 7. The support cap 11 supporting the common tilt drum 9 and the drive gear 13 is attached to the support member 36, the lifting shaft 8 is inserted into the tilt drum 9, and the tilt shaft 12 is inserted into the drive gear 13.

As the tilt shaft 12 rotates, the ladder tape 2 is moved up and down via the drive gear 13, the driven gear 10 and the tilt drum 9, and the slat 3 can be rotated.
In such a ladder tape suspending device 35, since the common support cap 11 is used, the tilt shaft 12 can be supported even when the head tape 1 is changed in the left-right direction as described above.

In the horizontal blind slat drive device configured as described above, the following operational effects can be obtained.
(1) While the lift shaft 8 and the tilt shaft 12 are provided in the head box 1, the tilt shaft 12 is disposed at the lower corner of the head box 1, and the tilt drum 9 rotated by the tilt shaft is connected to the winding shaft 7. Since it is rotated coaxially, the enlargement of the head box 1 can be suppressed.
(2) Even if the support member 6 that supports the take-up shaft 7 is changed in the horizontal direction in the head box 1 and attached, the drive gear 13 is attached to the support hole 28a by the support cap 11 attached to the support member 6. , 28b, the common support cap 11 can be used. Therefore, the same support cap 11 can be used even if the support member 6 is changed in the left-right direction.
(3) Since the locking projections 33a and 33b of the support cap 11 are provided at equal distances with respect to the centers of the lifting shaft 8 and the tilt drum 9, the locking projections can be obtained even if the support cap 11 is changed in the left-right direction. The support cap 11 can be fixed to the head box 1 by engaging one of 33 a and 33 b with the rib 34 of the head box 1.

You may implement the said embodiment in the following aspects.
The rotation axis of the tilt drum 9 may be configured not to be coaxial with the winding shaft 7.

  DESCRIPTION OF SYMBOLS 1 ... Head box, 3 ... Slat, 5 ... Lifting code, 6,36 ... Support member, 7 ... Winding shaft, 8 ... Lifting shaft, 9 ... Tilt drum, 10 ... Driven gear, 11 ... Bearing member (support cap) , 12 ... tilt shaft, 13 ... drive gear, 28a, 28b ... support hole, 33a, 33b ... locking means (locking protrusion), L ... perpendicular line.

Claims (5)

A lift axis and a tilt axis are rotatably supported in parallel in the head box, the tilt axis is positioned obliquely below the lift axis, and the winding shaft of the lift cord is rotated by the lift axis to raise and lower the slats. In a horizontal blind that adjusts the angle of the slat by rotating the tilt drum around the tilt axis,
A bearing member for rotatably supporting the tilt shaft is provided with two support holes through which the tilt shaft is inserted so as to be symmetrical with respect to a vertical line including the center of the lifting shaft. Slat drive device.   The winding shaft is rotatably supported by a support member, the tilt drum is rotatably supported by the support member coaxially with the winding shaft, the bearing member is attached to the support member, and the bearing The horizontal blind slat according to claim 1, wherein a drive gear for rotating the tilt drum is rotatably supported in a support hole of a member, and the tilt shaft is inserted into the center of the drive gear so as not to be relatively rotatable. Drive device.   3. The horizontal blind slat drive device according to claim 2, wherein the tilt drum is integrally provided with a driven gear that meshes with the drive gear.   On the upper side of the bearing member, two locking means for engaging the head box and fixing the bearing member to the head box are provided symmetrically with respect to a perpendicular line including the center of the lifting shaft. The slat drive device for a horizontal blind according to any one of claims 1 to 3.   The tilt drum is rotatably supported by a support member, the bearing member is attached to the support member, and a drive gear for rotating the tilt drum is rotatably supported in a support hole of the bearing member, and the drive gear The horizontal blind slat drive device according to claim 1, wherein the tilt shaft is inserted into the center of the horizontal blind so as not to be relatively rotatable.

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