JP5342873B2 - Shielding material lifting / lowering device for solar radiation shielding device and support device for solar radiation shielding material - Google Patents

Description

  The present invention relates to a shielding material elevating device for elevating and lowering a solar shielding material such as a slat or a curtain fabric and a support device for the solar shielding material in a solar radiation shielding device such as a horizontal blind or a pleated curtain.

  As one type of operating device for adjusting the angle and raising / lowering the slats of horizontal blinds, an operating rod for adjusting the angle of the slats is suspended from one end of the head box, and penetrates the operating rod from the head box. There is something that hangs the lifting cord.

  In such a horizontal blind, the slat is rotated via an angle adjusting device and a ladder cord disposed in the head box by rotating the operation rod. Further, the bottom rail and the slat are pulled up by pulling out the lifting / lowering cord from the head box through the operation rod, and the bottom rail and the slat are lowered by pulling the drawn lifting / lowering cord into the head box ( For example, see Patent Document 1).

The head box is provided with a self-weight drop prevention device for preventing the bottom rail and the sun weight of the slats from falling as a solar shading material. When the lifting / lowering cord is pulled out and released, the weight falling prevention device is in a locked state that prevents the lifting / lowering cord from being pulled into the head box and prevents the bottom rail and slats from dropping by its own weight. If it is pulled out, the locked state is released and the bottom rail and slat can be lowered. In addition, it is also possible to pull up the lifting / lowering cord from the locked state and perform the lifting operation of the bottom rail and the slat.
Japanese Patent No. 3479038 Japanese Patent No. 2713522

  In a horizontal blind operating device equipped with a self-weight drop prevention device as described above, if the lift cord is accidentally released while the self-weight drop prevention device is unlocked, the bottom rail will vigorously fall to the lower limit position, causing noise. May occur. Moreover, it may collide with household goods tools etc. arrange | positioned in the lower limit position vicinity of a bottom rail, and may generate a harsh collision sound. Furthermore, there is a risk of damaging or scratching articles such as the household goods tools.

  Patent Document 2 discloses a solar shading material elevating device including a coil spring for tensioning an elevating cord in a gripping rod that functions as a code equalizer for pulling the elevating cord from an operation rod. However, the coil spring tensions the lifting / lowering cord at the lower limit stop position of the bottom rail, and does not reduce the lowering speed of the bottom rail when the solar radiation shielding material is lowered.

  In addition, not only horizontal blinds but also solar shading devices such as pleated curtains, when the solar shading material is lowered, the bottom rail may drop vigorously to the lower limit position to generate noise, which causes the same problem.

  An object of the present invention is to provide a shielding material elevating device for a solar radiation shielding device and a support device for the solar radiation shielding material that can reduce the descending speed of the bottom rail when the solar radiation shielding material is lowered.

Hereinafter, means for achieving the above-described object and its operation and effects will be described.
According to the first aspect of the present invention, the solar shading material supported by being suspended from the head box can be lifted by pulling the lifting cord from the head box, and the lifting cord can be operated by the weight of the solar shading material and the bottom rail. In the shielding material lifting / lowering device of the solar radiation shielding device that enables the solar radiation shielding material to be lowered by being pulled into the head box, the head box rotates with the displacement of the lifting / lowering cord, and each example Bei the at displacement equipped with a speed reduction mechanism that decelerates the displacement speed of the lift cord pulleys in correspondence with each of the lift cord, above the said pulley, narrow pressed the lift cord in cooperation with the pulley The gist of the invention is that a narrow pressure pulley is provided .

According to this configuration, the displacement speed of the bottom rail, which is accelerated as the solar radiation shielding material descends, is decelerated by the deceleration mechanism mounted on the pulley that is supported so that the lifting / lowering cord can be displaced when the solar radiation shielding material is lowered. be able to. In addition, since each of the lifting / lowering cords is provided corresponding to each lifting / lowering cord, the size of the device can be reduced and the load on each device can be reduced as compared with the case where all the lifting / lowering cords are decelerated by one device. be able to.
In addition, a narrow pressure pulley is provided above the pulley to cooperate with the pulley to narrow and guide the lifting / lowering cord, so that the lifting / lowering cord can be reliably brought into contact with the pulley. The resistance increases, and the displacement of the lifting / lowering cord and the pulley can be reliably synchronized, and the deceleration by the deceleration mechanism can be transmitted more reliably.

  According to a second aspect of the present invention, in the shielding member lifting / lowering device of the solar shading device according to the first aspect, the speed reduction mechanism is an oil damper built in the pulley, and the pulley is moved by the displacement of the lifting / lowering cord. The gist is that when the oil is rotated, the oil damper suppresses the rotation.

  According to this configuration, the speed reduction mechanism is an oil damper built in the pulley, and when the pulley is rotated by the displacement of the lifting / lowering cord, the rotation of the pulley is suppressed by the oil damper. For this reason, when the displacement rate increases at an accelerated rate as the solar radiation shielding material descends, the displacement of the bottom rail during the descending operation of the solar radiation shielding material can be reduced by suppressing the displacement of the elevating cord. .

  According to a third aspect of the present invention, in the shielding material elevating device of the solar radiation shielding device according to the first or second aspect, a one-way clutch is provided on the shaft of the pulley, and the elevating cord descends the solar radiation shielding material. The gist is that the shaft of the pulley is fixed when displaced in the direction, and the shaft of the pulley is pivotable when the lifting cord is displaced in the rising direction of the solar shading material. Yes.

  According to the same configuration, the one-way clutch that is fixed when the elevating cord is displaced in the direction in which the solar shading material is lowered and is rotatable when the elevating cord is displaced in the direction in which the solar shading material is raised. Provide on the shaft of the pulley. For this reason, the displacement speed of a bottom rail can be decelerated by making a deceleration mechanism function at the time of the descent | fall operation which descend | descends by the dead weight of a solar radiation shielding material and a bottom rail. In addition, by not operating the speed reduction mechanism when raising the solar shading material operated by the user, the user can operate without applying a load, and when the lifting cord is pulled suddenly, the oil damper is loaded. It is possible to suppress the application.

The gist of the invention described in claim 4 is that, in the shielding material elevating device of the solar radiation shielding device according to any one of claims 1 to 3 , the outer peripheral surface of the pulley is subjected to knurling. It is said.

  According to this configuration, since the outer peripheral surface of the pulley is knurled, the contact resistance between the lifting / lowering cord and the pulley is increased, and the displacement of the lifting / lowering cord and the pulley are reliably synchronized with each other to reduce the speed by the reduction mechanism. It can be transmitted more reliably.

For example, as in the invention described in claim 5 , any one of an operable state in which the solar shading material can be raised and lowered and an own weight descent preventing state in which the solar shading material and the bottom rail are prevented from descending by their own weight. You may apply to the shielding material raising / lowering apparatus of the solar radiation shielding apparatus provided with the dead weight fall prevention apparatus which enabled selection.

According to a sixth aspect of the present invention, there is provided a solar shading material comprising a pulley provided in a head box corresponding to a lifting cord for raising and lowering the solar shading material and vertically turning the lifting cord guided along the head box. In this support device, the pulley is provided with a speed reduction mechanism, and a narrow pressure pulley that narrows and guides the lifting cord in cooperation with the pulley is provided above the pulley .

  According to this configuration, the displacement speed of the bottom rail, which is accelerated as the solar radiation shielding material descends, is decelerated by the deceleration mechanism mounted on the pulley that is supported so that the lifting / lowering cord can be displaced when the solar radiation shielding material is lowered. be able to.

The invention according to claim 7 is the solar radiation shielding material support device according to claim 6 , wherein the speed reduction mechanism is an oil damper built in the pulley, and when the pulley is rotated by the displacement of the lifting / lowering cord, The gist is that rotation is suppressed by the oil damper.

  According to this configuration, the speed reduction mechanism is an oil damper built in the pulley, and when the pulley is rotated by the displacement of the lifting / lowering cord, the rotation of the pulley is suppressed by the oil damper. For this reason, when the displacement rate increases at an accelerated rate as the solar radiation shielding material descends, the displacement of the bottom rail during the descending operation of the solar radiation shielding material can be reduced by suppressing the displacement of the elevating cord. .

For example, as in the invention of claim 8, it may be applied to drum for turning the slats as the solar radiation shielding material to shield member elevating device insolation shielding device which is provided rotatably on the supporting device.

  ADVANTAGE OF THE INVENTION According to this invention, the lowering | lowering speed of a bottom rail can be decelerated at the time of lowering operation of a bottom rail, and the shielding material raising / lowering device of a solar radiation shielding apparatus and the support apparatus of a solar radiation shielding material can be provided.

Hereinafter, an embodiment in which a solar shading device according to the present invention is embodied as a horizontal blind will be described with reference to FIGS.
As shown in FIGS. 1 and 2, in the horizontal blind, a multi-stage slat 3 is suspended and supported from a head box 1 via a plurality of ladder cords 2, and a bottom rail 4 is provided at the lower end of the ladder cord 2. Is supported by hanging. The multi-stage slats 3 function as solar shading materials.

  A plurality of support devices 5 are arranged in the head box 1 corresponding to each ladder cord 2, and a drum 6 is rotatably supported by the support devices 5. An upper end portion of the ladder cord 2 is attached to the drum 6, and an angle adjusting shaft 7 is fitted into the center portion of the drum 6.

  Accordingly, when the angle adjusting shaft 7 is rotated, the drum 6 is rotated, and one of the ladder cords 2 is pulled up with the rotation of the drum 6, whereby each slat 3 is adjusted in angle in the same phase.

  An operation rod 8 is supported at one end of the head box 1 in a suspended manner. When the operating rod 8 is rotated, the angle adjusting shaft 7 is rotated via a gear box (not shown) disposed in the head box 1. Therefore, the angle of each slat 3 can be adjusted by rotating the operation rod 8.

  A plurality of elevating cords 10 are inserted into the slats 3 corresponding to the ladder cords 2, and one end of the elevating cords 10 is attached to the bottom rail 4. That is, each support device 5 is arranged corresponding to each lifting / lowering cord 10. As shown in FIG. 3, the other end of the lifting / lowering cord 10 is guided to a self-weight fall prevention device 11 disposed at one end of the head box 1 through an oil damper built-in pulley 20 of the support device 5.

As shown in FIG. 1, the lifting / lowering cord 10 is inserted into the operation rod 8 through the gear box from its own weight drop prevention device 11, and the tip thereof is connected to the cord equalizer 13.
Therefore, as shown by a two-dot chain line in FIG. 1, when the cord equalizer 13 is pulled downward and the lifting cord 10 is pulled out from the head box 1, the bottom rail 4 is pulled up, so that the slat 3 is pulled up.

  Then, when the lifting operation of the lifting / lowering cord 10 is stopped and the lifting / lowering cord 10 is released, the own weight lowering prevention device 11 is activated, the stopper cam 12 is engaged with the lifting / lowering cord 10, and the slat 3 and the bottom rail 4 are lowered by their own weight. Is prevented.

  Further, when the lifting / lowering cord 10 is slightly pulled downward from the state where the own weight lowering prevention device 11 is operating, the engagement of the stopper cam 12 with the lifting / lowering cord 10 is released, and the operation of the own weight lowering prevention device 11 is released. The slat 3 and the bottom rail 4 can be lowered by its own weight.

Next, the support device 5 will be described in detail with reference to FIGS.
As shown in FIG. 3, the support device 5 cooperates with the oil damper built-in pulley 20 that guides the lifting / lowering cord 10 from below to the self-weight drop prevention device 11 and the lifting / lowering cord 10 in the vertical direction. And a narrow pulley 23 for guiding the lifting cord 10 with a narrow pressure. The pulley 20 with a built-in oil damper is a pulley having a built-in oil damper 20a as a speed reduction mechanism, and the outer peripheral surface is knurled. The pulley 20 with a built-in oil damper is a pulley that suppresses its rotation against the rotational force due to the highly viscous oil filled therein when the rotational force is applied with the shaft 21 fixed. Since the lifting / lowering cord 10 is pressed against the pulley 20 with a built-in oil damper by the narrow pressure pulley 23 and is brought into reliable contact, the movement of the lifting / lowering cord 10 and the pulley 20 with a built-in oil damper can be synchronized.

  As shown in FIG. 4, in the support device 5, two of the above-described pulley 20 with a built-in oil damper and a guide pulley 24 that guides the other lifting cord 10 are arranged side by side in the short direction of the head box 1. . Specifically, the left support device 5 has an oil damper built-in pulley 20 on the back side, and a front pulley is a guide pulley 24, and the center and right support devices 5 have an oil damper built-in pulley 20 on the front side and a guide pulley 24 on the back side. It has become. Each lifting / lowering cord 10 guided through each supporting device 5 is guided to the own weight lowering prevention device 11.

  One end of the shaft 21 of the pulley 20 with a built-in oil damper is pivotally supported by a one-way clutch 22 fixed to the support device 5 (the satin pattern portion in FIG. 4). The one-way clutch 22 locks the shaft 21 of the oil damper built-in pulley 20 when the lifting / lowering cord 10 is displaced downward from the support device 5, and the lifting / lowering cord 10 is supported from below the support device 5. When it is displaced, the shaft 21 of the pulley 20 with a built-in oil damper is brought into an unlocked state in which the pulley 21 is rotatable. The other end of the shaft 21 of the pulley 20 with a built-in oil damper is pivotally supported by the support device 5 so as to be rotatable. The shaft 21 here may also be supported by the one-way clutch 22.

  That is, when the elevating cord 10 is displaced below the support device 5 due to the weight of the slat 3 when the slat 3 is lowered, the shaft 21 of the oil damper built-in pulley 20 is fixed by the one-way clutch. 20 gives resistance to the displacement of the lifting / lowering cord 10 and the displacement of the lifting / lowering cord 10 is suppressed. Therefore, it is possible to decelerate the displacement speed that is accelerated by the weight of the slat 3 when the slat 3 is lowered.

  On the other hand, when the user moves the lifting / lowering cord 10 from below the support device 5 to the support device 5 when raising the slat 3, the shaft 21 of the oil damper built-in pulley 20 is not fixed by the one-way clutch and rotates. Since it is possible, the pulley 20 with a built-in oil damper rotates in synchronization with the displacement of the lifting / lowering cord 10, and the user's operation on the lifting / lowering cord 10 is transmitted as it is. Therefore, it is possible to operate the slat 3 without raising the load when the slat 3 is raised.

As described above, according to the embodiment described above, the following effects can be obtained.
(1) When the slat 3 is lowered, a speed reduction mechanism mounted on a pulley on which the lifting / lowering cord 10 is supported so as to be displaceable can decelerate the displacement speed of the bottom rail 4 that is accelerated as the slat 3 is lowered. . In addition, since each of the lifting cords 10 is provided corresponding to each lifting / lowering cord 10, the size of the device can be reduced as compared with the case where all the lifting / lowering cords 10 are decelerated by one device, and the load on each device is reduced. Can be small.

  (2) When the speed reduction mechanism is the oil damper 20a and the pulley 20 with a built-in oil damper rotates due to the displacement of the lifting / lowering cord 10, the rotation of the pulley is suppressed by the oil damper 20a. For this reason, when the slat 3 descends, the displacement speed increases at an accelerated rate, and the displacement speed of the bottom rail 4 during the descending operation of the slat 3 can be reduced by suppressing the displacement of the lifting / lowering cord 10. .

  (3) An oil damper is provided with a one-way clutch 22 that is fixed when the elevating cord 10 is displaced in the direction in which the slat 3 is lowered, and is rotatable when the elevating cord 10 is displaced in the direction in which the slat 3 is raised. It is provided on the shaft 21 of the built-in pulley 20. For this reason, the displacement speed of the bottom rail 4 can be decelerated by making the oil damper 20a function at the time of the lowering operation that is lowered by the dead weight of the slat 3 and the bottom rail 4. Further, by not operating the oil damper 20a during the raising operation of the slat 3 operated by the user, the user can operate without applying a load, and the oil damper 20a can be operated when the lifting cord 10 is suddenly pulled. Applying a load can be suppressed.

  (4) Since a narrow pressure pulley 23 is provided above the pulley 20 with a built-in oil damper and cooperates with the pulley 20 with a built-in oil damper to guide the lift cord 10 with a narrow pressure, the lift cord 10 has a pulley 20 with a built-in oil damper. The contact resistance between the lifting / lowering cord 10 and the pulley 20 with built-in oil damper is increased, and the displacement of the lifting / lowering cord 10 and the pulley 20 with built-in oil damper are reliably synchronized to further reduce the speed by the speed reduction mechanism. It can be transmitted reliably.

  (5) Since the outer peripheral surface of the pulley 20 with a built-in oil damper is knurled, the contact resistance between the lifting / lowering cord 10 and the pulley 20 with a built-in oil damper increases, and the displacement of the lifting / lowering cord 10 and the pulley 20 with a built-in oil damper Can be reliably synchronized, and the deceleration by the deceleration mechanism can be transmitted more reliably.

In addition, the said embodiment can be implemented with the following forms which changed this suitably.
In the above embodiment, the number of the lifting / lowering cords 10 is three as a plurality, but may be two or four or more. Note that the number of support devices 5 is the same in correspondence with the number of the lifting cords 10.

  As shown in FIG. 5 and FIG. 6, the ladder cord support device 33 and the lifting / lowering cord winding device 34 are driven by the operation of the operation cord 30 via the gear box and the drive shaft 32 in the head box 31. The present invention may be applied to a horizontal blind that can be adjusted in angle and raised and lowered. Specifically, when the tension of the lifting / lowering cord 36 disappears, the engagement of the ratchet 38 and the convex portion 39 prevents the lifting / lowering cord 36 from rotating in the rewinding direction. A guide pulley 37 for guiding the lifting / lowering cord 36 is rotatably supported at the bottom of the lifting / lowering cord winding device 34. An oil damper is applied to the guide pulley 37 as in the above embodiment. In this way, when the ratchet 38 and the projection 39 are disengaged and the weight of the slat 35 is lowered by its own weight, the increase in the acceleration displacement speed of the lifting / lowering cord 36 can be reduced. In addition, you may apply this invention not only to these horizontal blinds but to the shielding material raising / lowering apparatus which guides the raising / lowering cord with the pulley.

  In the above embodiment, the knurling process is performed on the pulley 20 with a built-in oil damper, but the knurling process may not be performed if a sufficient contact resistance between the lifting / lowering cord 10 and the pulley 20 with a built-in oil damper is obtained.

  In the above embodiment, the shaft 21 of the pulley 20 with a built-in oil damper is pivotally supported by the one-way clutch 22. However, if the resistance by the oil damper 20a is applied when the slat 3 is raised, the one-way clutch 22 is not provided. The shaft 21 of the damper built-in pulley 20 may be fixed.

In the above embodiment, the oil damper 20a is employed as the speed reduction mechanism. However, the present invention is not limited to the oil damper 20a, and other devices such as a gear may be employed.
In the above embodiment, the present invention is applied to a horizontal blind that lifts and lowers a slat. However, the present invention is not limited to this, and the present invention may be applied to a solar shading device such as a pleated curtain that lifts and lowers a solar shading material such as curtain fabric. Good.

The front view of a solar radiation shielding apparatus. The side view of a solar radiation shielding apparatus. The block diagram which shows schematic structure of the shielding material raising / lowering apparatus of a solar radiation shielding apparatus. The block diagram which shows schematic structure of the support apparatus of the shielding material raising / lowering apparatus of a solar radiation shielding apparatus. The front view of a solar radiation shielding apparatus. The block diagram which shows schematic structure of the shielding material raising / lowering apparatus of a solar radiation shielding apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Head box, 2 ... Ladder cord, 3 ... Slat, 4 ... Bottom rail, 5 ... Supporting device, 6 ... Drum, 7 ... Angle adjustment shaft, 8 ... Operation rod, 10 ... Lifting cord, 11 ... Self-weight fall prevention device , 12 ... Stopper cam, 13 ... Code equalizer, 20 ... Pulley with built-in oil damper, 20a ... Oil damper, 21 ... Shaft, 22 ... One-way clutch, 23 ... Narrow pressure pulley, 24 ... Guide pulley

Claims (8)

By pulling out the lifting cord from the head box, the solar shading material supported by being suspended from the head box can be lifted, and the same day by pulling the lifting cord into the head box by the weight of the solar shading material and the bottom rail. In the shielding material lifting / lowering device of the solar radiation shielding device that allows the radiation shielding material to be lowered,
The head box is provided with a pulley corresponding to each of the lifting / lowering cords, which is rotated according to the displacement of the lifting / lowering cords and is equipped with a speed reduction mechanism for reducing the displacement speed of the lifting / lowering cords when the lifting / lowering cords are displaced. Huh,
A shielding material lifting / lowering device for a solar radiation shielding device, wherein a narrow pressure pulley is provided above the pulley to cooperate with the pulley and guide the lifting / lowering cord by narrowing pressure . In the shielding material elevating device of the solar radiation shielding device according to claim 1,
The speed reduction mechanism is an oil damper built in the pulley, and when the pulley is rotated by the displacement of the lifting / lowering cord, the oil damper suppresses the rotation. lift device. In the shielding material elevating device of the solar radiation shielding device according to claim 1 or 2,
A one-way clutch is provided on the shaft of the pulley, and when the lifting / lowering cord is displaced in a direction in which the solar shading material descends, the shaft of the pulley is fixed, and the lifting / lowering cord ascends the solar shading material. A shielding material lifting / lowering device for a solar radiation shielding device, wherein the pulley shaft is pivotable when displaced in a direction. In the shielding material raising / lowering device of the solar radiation shielding apparatus as described in any one of Claims 1-3 ,
A shielding material elevating device for a solar radiation shielding device, wherein the outer peripheral surface of the pulley is knurled. In the shielding material raising / lowering device of the solar radiation shielding apparatus as described in any one of Claims 1-4 ,
The headbox has an operable state in which the solar shading material can be moved up and down by allowing the lifting cord to be displaced, and the solar shading material is lowered by its own weight by restricting the lifting cord displacement. A shielding material raising / lowering device for a solar radiation shielding device, comprising: a dead weight fall prevention device capable of selecting any of a dead weight fall prevention state that inhibits a dead weight. In the support device of the solar shading material provided in the head box corresponding to the hoisting code for raising and lowering the solar shading material, and equipped with a pulley for vertically turning the lifting cord guided along the head box,
The pulley is provided with a speed reduction mechanism,
An apparatus for supporting a solar radiation shielding material, wherein a narrow pressure pulley is provided above the pulley to cooperate with the pulley to guide the lifting cord by narrowing pressure . In the support apparatus of the solar radiation shielding material of Claim 6 ,
The said speed reduction mechanism is an oil damper built in the said pulley, and if the pulley rotates by the displacement of the said raising / lowering cord, rotation will be suppressed by the oil damper. The solar radiation shielding material support apparatus characterized by the above-mentioned. The support device for solar radiation shielding material according to claim 6 or 7 ,
A support device for a solar radiation shielding material, wherein a drum for turning a slat as the solar radiation shielding material is rotatably provided in the support device.

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