JP2010106454A - Shield member lifting device of solar radiation shielding apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shield member lifting device of a solar radiation shielding apparatus having a braking device which can reliably decelerates the lowering speed of a bottom rail near the lower limit position of the bottom rail and has superior durability. <P>SOLUTION: This solar radiation shielding apparatus lifts up and down the bottom rail of a shield member by inserting the lifting cord into a bar suspended from a head box and pulling the lifting cord out of and into the head box through the bar. A braking body 12 which generates a braking force against the movement thereof relative to the bar 8 is movably supported on the bar 8. A projection 14 is provided to the lifting cord 9 led out of the bar 8. The projection 14 is engaged with the braking body 12 when the lifting cord 9 is pulled into the head box to decelerate the pull-in speed of the lifting cord 9. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an elevating device for elevating and lowering a solar shading material such as a slat or a curtain cloth in a solar shading 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. .

A stopper device is provided in the head box to prevent the weight of the slat and the bottom rail from dropping. This stopper device is in a locked state that prevents the lifting / lowering cord from being pulled into the head box and preventing the bottom rail and slats from falling by its own weight when the lifting / lowering cord is pulled out and released, and the lifting / lowering cord can be slightly pulled out from this state. For example, the locked state is released and the bottom rail and the 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. 2713522 Japanese Utility Model Publication No. 58-52297

  In the horizontal blind operating device with the stopper device as described above, if the lifting / lowering cord is accidentally released with the stopper device unlocked, the bottom rail will fall down to the lower limit position and generate noise. There is. 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.

  Patent Document 1 discloses a slat lifting device including a coil spring for tensioning a lifting / lowering cord in a gripping bar that functions as a code equalizer for pulling the lifting / lowering cord from an operation rod.

  However, this coil spring tensions the lifting / lowering cord at the lower limit stop position of the bottom rail, and does not decelerate the lowering speed of the bottom rail when the bottom rail is lowered.

  Patent Document 2 discloses a safe operation device that adjusts the moving speed of a cord drawn from a grip by friction between a plug and a flange to suppress the lowering speed of the bottom rail.

However, since the cord is rubbed between the plug and the flange to adjust the moving speed, there is a problem that the cord is easily worn.
An object of the present invention is to provide a shielding material lifting / lowering device for a solar shading device that is provided with a braking device that reliably lowers the descending speed of the bottom rail near the lower limit position of the bottom rail and has excellent durability.

  According to the first aspect of the present invention, the lifting / lowering cord is inserted into the rod body suspended and supported from the head box, and the lifting / lowering cord is pulled out from the head box through the rod body, or drawn into the head box through the rod body and shielded. In the solar shading device for raising and lowering the material, the rod body is movably supported by a brake body that generates a braking force with respect to the relative movement with the rod body, and a protrusion is provided on the lifting cord led out from the rod body. And the protrusion is engaged with the braking body to reduce the pull-in speed of the lift cord during the pull-in operation of the lift cord into the head box.

  According to a second aspect of the present invention, the rod body is formed of a metal pipe, the brake body is configured by a magnet supported so as to be movable in the rod body, and an eddy current is generated in the rod body by the movement of the magnet, Suppresses the moving speed of the magnet.

In Claim 3, the cylindrical grip was attached to the lower end part of the said rod, and this grip was formed with the same metal material as the said rod.
According to a fourth aspect of the present invention, the braking body is constituted by a piston rod of a shock absorber that can be projected and lowered downward from the rod body, and the projection is constituted by a cord equalizer attached to a lower end of the lifting / lowering cord.

According to a fifth aspect of the present invention, the rod body is an operation rod for adjusting the angle of the slat.
7. The knot that the outer cylinder of a shock absorber accommodated in the head box and a piston rod constitute the rod body and the braking body, and the projections are provided on the elevating cord and engage with the piston rod. It was.

  ADVANTAGE OF THE INVENTION According to this invention, the descending speed of a bottom rail can be reliably decelerated near the lower limit position of a bottom rail, and the shielding material raising / lowering apparatus of the solar radiation shielding apparatus provided with the brake device excellent in durability can be provided.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. In the horizontal blind shown in FIG. 1, 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 suspended and supported at the lower end of the ladder cord 2. .

  A plurality of support members 5 are disposed in the head box 1, and a drum 6 is rotatably supported by the support members 5. An upper end portion of the ladder cord 2 is attached to the drum 6, and an angle adjusting shaft 7 is inserted into the center portion of the drum 6. Therefore, when the angle adjusting shaft 7 is rotated, the drum 6 is rotated, and as the drum 6 rotates, one of the ladder cords 2 is pulled up, so that each slat 3 and the bottom rail 4 have the same phase and angle. Adjusted.

  An operation rod (rod body) 8 is suspended and supported at one end of the head box 1. When the operation rod 8 is rotated, the angle adjusting shaft 7 is rotated via a gear mechanism disposed in the head box 1. Therefore, the angle of each slat 3 can be adjusted by rotating the operation rod 8.

  Elevating cords 9 are respectively penetrated on both sides of the slat 3, and one end of each elevating cord 9 is attached to the bottom rail 4. The other end of each lifting / lowering cord 9 is guided through the support member 5 in the direction of the operation rod 8 in the head box 1. Then, after passing through a stopper device provided in the head box 1, it is inserted into the hollow operation rod 8, and the tip thereof is attached to the code equalizer 10.

  Therefore, the bottom rail 4 can be pulled up and the slat 3 can be pulled up by pulling the cord equalizer 10 downward and pulling the lifting / lowering cord 9 from the head box 1. If the pulling-out operation of the lifting / lowering cord 9 is stopped, the stopper device is activated to prevent the bottom rail 4 and the slats 3 from being lowered due to their own weight, and the slats 3 are suspended and supported at desired positions.

  When the lifting / lowering cord 9 is pulled out from the head box 1 and then released, the stopper device is in a locked state that prevents the lifting / lowering cord 9 from being pulled into the head box 1 and prevents the bottom rail 4 and the slat 3 from falling under its own weight. . Further, if the lifting / lowering cord is slightly pulled out from this state, the locked state is released and the lifting / lowering cord 9 is pulled into the head box 1 so that the bottom rail 4 and the slat 3 can be lowered. .

  A grip 11 is attached to the lower end portion of the operation rod 8, and an operator can hold the grip 11 and rotate the operation rod 8. The grip 11 is formed in a substantially cylindrical shape and communicates with the operation rod 8.

A brake device that suppresses the speed of lowering the weight of the bottom rail 4 is built in the operation rod 8. A specific configuration of the braking device will be described next.
As shown in FIG. 2, the operation rod 8 is made of a non-magnetic material such as aluminum or copper and a metal pipe having high conductivity. The grip 11 is formed in a cylindrical shape with the same material as the operation rod 8 and is fitted to the lower end of the operation rod 8.

  A cylindrical magnet (braking body) 12 is supported in the operation rod 8 so as to move up and down in the operation rod 8. This magnet 12 is made of neodymium having a magnetic force stronger than that of a ferrite magnet and has an outer diameter smaller than the inner diameter of the operation rod 8. Then, the cap 13 attached to the lower end of the grip 11 prevents the magnet 12 from dropping from the operating rod 8, and the lower limit position of the magnet 12 is set.

The plurality of lifting / lowering cords 9 are suspended from the operation rod 8 through the magnet 12 and the cap 13 and below the grip 11, and the cord equalizer 10 is attached to the lower end thereof.
A caulking terminal (projection) 14 is fixedly attached to the lifting / lowering cord 9 at a position separated from the cord equalizer 10 by a predetermined distance. The caulking terminal has a diameter that can be inserted into the cap 13 and the operation rod 8 but cannot be inserted into the magnet 12. Accordingly, when the lifting / lowering cord 9 is drawn into the grip 11 from the state shown in FIG. 2 and the caulking terminal 14 moves upward in the operation rod 8, the magnet 12 moves upward together with the caulking terminal 14. Yes.

  The length of the lifting / lowering cord 9 is such that the bottom rail 4 reaches the lower limit when the lifting / lowering cord 9 is drawn into the operation rod 8 and the cord equalizer 10 contacts the lower end of the grip 11 as shown in FIG. Has been adjusted.

  On the other hand, when the cord equalizer 10 is pulled downward and the lifting / lowering cord 9 is pulled out from the grip 11, the crimping terminal 14 moves downward, so that the magnet 12 moves downward due to its own weight. When the caulking terminal 14 is drawn downward from the grip 11, the magnet 12 is held at the lower end of the grip 11 as shown in FIG. 2.

  When the magnet 12 moves in the operating rod 8, the magnet 12 moves without contacting the inner peripheral surface of the operating rod 8 and changes the magnetic flux in the operating rod 8 based on the change in the magnetic flux passing through the operating rod 8. A disturbing eddy current is generated. As a result, a braking force in a direction that prevents the movement of the magnet 12 acts. This braking force increases as the moving speed of the magnet 12 increases.

  In the horizontal blind operating device configured as described above, when the cord equalizer 10 is pulled downward and the lifting / lowering cord 9 is pulled out from the head box 1, the bottom rail 4 is pulled up, and the slat 3 is pulled up together with the bottom rail 4. It is done.

  At this time, when the crimping terminal 14 is lowered, the magnet 12 is lowered in the operation rod 8 due to its own weight, and when the crimping terminal 14 is pulled out below the grip 11 as shown in FIG. It will be in the state held at the lower end.

When the cord equalizer 10 is released after the bottom rail 4 and the slat 3 are pulled up to a desired height, the stopper device is activated to prevent the bottom rail 4 from falling by its own weight.
When the bottom rail 4 and the slat 3 are lowered, the cord equalizer 10 is released in a state where the cord equalizer 10 is pulled slightly downward to release the operation of the stopper device. Then, due to the weight of the bottom rail 4 and the slat 3, the lifting / lowering cord 9 suspended through the operation rod 8 is drawn into the head box 1, the bottom rail 4 is lowered by its own weight, and the code equalizer 10 is pulled up.

  When the lifting / lowering cord 9 is pulled into the grip 11 and the crimping terminal 14 is pulled into the grip 11, the magnet 12 rises in the operation rod 8 together with the crimping terminal 14 as shown in FIG. 3.

  At this time, an eddy current is generated in the operating rod 8 as the magnet 12 moves, and a braking force acts on the magnet 12. As a result, the moving speed of the lifting / lowering cord 9 is suppressed, the lowering speed of the bottom rail 4 is decelerated, and it slowly descends. When the bottom rail 4 is lowered to the lower limit, the code equalizer 10 comes into contact with the lower end of the grip 11 as shown in FIG.

In the horizontal blind slat lifting apparatus configured as described above, the following operational effects can be obtained.
(1) The bottom rail 4 and the slat 3 are moved up and down by operating the cord equalizer 10 and pulling the lifting / lowering cord 9 from the head box 1 through the operation rod 8 or pulling the lifting / lowering cord 9 into the head box 1. be able to.
(2) Even when the bottom rail 4 and the slat 3 are lowered by their own weight, the lowering speed of the bottom rail 4 can be reduced by the braking force acting on the magnet 12 before the bottom rail 4 reaches the lower limit. Therefore, even when the operation of the stopper device is mistakenly canceled and the bottom rail 4 is inadvertently lowered by its own weight, a collision sound is generated due to the collision between the bottom rail 4 and the household goods in the vicinity of the lower limit position of the bottom rail 4. Can be prevented.
(3) The lowering speed of the bottom rail 4 can be reduced without rubbing the lifting / lowering cord 9 by the magnet 12 moving in the operation rod 8. Therefore, the lifting / lowering cord 9 is not worn.
(4) Since the magnet 12 moves in a non-contact manner with respect to the operating rod 8, the durability of the braking device can be improved.
(5) During the lifting operation of the bottom rail 4 and the slat 3, the lifting / lowering cord 9 is not moved integrally with the magnet 12, so that the braking force does not act on the lifting / lowering cord 9. Therefore, the operating force required for the lifting operation of the bottom rail 4 and the slat 3 is not increased.
(6) Since the magnet 12 is moved within the operation rod 8, the braking device does not impair the aesthetics of the horizontal blind.
(7) The same braking force can be applied to the plurality of lifting cords 9 with one magnet 12. Accordingly, the bottom rail 4 can be lowered while maintaining the horizontal direction.
(8) As the moving speed of the magnet 12 increases, a greater braking force acts, so that the lowering speed of the bottom rail 4 can be reduced to a certain speed or less.
(Second embodiment)
5 and 6 show a second embodiment. In this embodiment, a shock absorber that operates as a braking device is provided in the operating rod 8 and the grip 11. Except for the configuration of the braking device, the second embodiment is the same as the first embodiment. The same components as those in the first embodiment will be described with the same reference numerals.

As shown in FIGS. 5A to 5D, a shock absorber 21 is accommodated in the grip 11. A specific configuration of the shock absorber 21 will be described next.
The shock absorber 21 is held in the grip 11 by a cap 23 in which an outer cylinder 22 is accommodated in the grip 11 and fitted to the lower end of the grip 11. As shown in FIG. 6, a hollow piston rod 24 is inserted into the lower opening and the upper opening of the outer cylinder 22 so as to be movable in the vertical direction, and the upper end of the piston rod 24 is shown in FIG. ) As shown in (d), it is possible to enter the operation rod 8 from the outer cylinder 22.

  The piston rod 24 is integrally formed with a flanged piston valve 25 having a diameter substantially equal to the inner diameter of the outer cylinder 22, and the piston valve 25 moves up and down in the outer cylinder 22 together with the piston rod 24. Yes.

  Oil 26 is filled between the outer cylinder 22 and the piston rod 24, and the piston valve 25 is provided with a plurality of ports 27 through which the oil 26 can flow from the upper side to the lower side or from the lower side to the upper side. It has been.

  With such a configuration, when the piston valve 25 of the piston rod 24 moves upward in the outer cylinder 22, the oil 26 above the piston valve 25 moves below the piston valve 25 through the port 27. Further, when the piston valve 25 moves downward in the outer cylinder 22, the oil 26 below the piston valve 25 moves above the piston valve 25 via the port 27.

Accordingly, the oil 26 whose flow rate is restricted at the port 27 becomes a resistance, and the moving speed of the piston rod 24 is restricted to a predetermined speed or less.
O-rings 28 a and 28 b slidably in contact with the outer peripheral surface of the piston rod 24 are provided at the lower opening and the upper opening of the outer cylinder 22, thereby preventing oil 26 from leaking from the outer cylinder 22.

  A lower end portion of the piston rod 24 extends downward from the grip 11, and an impact protection material 29 formed in a ring shape with synthetic rubber or the like is attached to the lower end thereof. As shown in FIG. 5A, when the piston valve 25 is positioned at the lower limit in the outer cylinder 22, the length of the piston rod 24 that can be immersed in the outer cylinder 22 is set in the outer cylinder 22. The piston valve 25 is set to be slightly shorter than the stroke in which the piston valve 25 can move up and down.

  The lifting / lowering cord 9 is suspended downward from the operation rod 8 through the piston rod 24, and the cord equalizer 10 is attached to the lower end thereof. As shown in FIG. 5D, when the code equalizer 10 abuts on the lower end of the piston rod 24 and the piston valve 25 is positioned in the vicinity of the upper end portion in the outer cylinder 22, the bottom rail 4 reaches the lower limit. Further, the length of the lifting / lowering cord 9 is set.

  In order to attach the lifting / lowering cord 9 to the cord equalizer 10, as shown in FIG. 5, the lifting / lowering cord 9 is inserted into the insertion hole 30 provided in the upper portion of the cord equalizer 10, and the lower end of the lifting / lowering cord 9 is inserted. A knot 31 is formed to prevent it from coming out of the insertion hole 30, and a cap 32 is fitted to the lower end portion of the cord equalizer 10.

  In the horizontal blind operating device configured as described above, when the cord equalizer 10 is pulled downward and the lifting / lowering cord 9 is pulled out from the head box 1, the bottom rail 4 is pulled up, and the slat 3 is pulled up together with the bottom rail 4. It is done.

  At this time, when the code equalizer 10 is separated downward from the grip 11, the piston rod 24 is gradually lowered by its own weight until the piston valve 25 reaches the lower limit position of the lifting stroke in the outer cylinder 22 as shown in FIG. To descend.

When the cord equalizer 10 is released after the bottom rail 4 and the slat 3 are pulled up to a desired height, the stopper device is activated to prevent the bottom rail 4 from falling by its own weight.
When the bottom rail 4 and the slat 3 are lowered, the cord equalizer 10 is released in a state where the cord equalizer 10 is pulled slightly downward to release the operation of the stopper device.

  Then, due to the weight of the bottom rail 4 and the slat 3, the lifting / lowering cord 9 suspended through the operation rod 8 is drawn into the head box 1, the bottom rail 4 is lowered by its own weight, and the code equalizer 10 is pulled up.

  When the bottom rail 4 is lowered to the vicinity of the lower limit, the code equalizer 10 comes into contact with the lower end of the piston rod 24 as shown in FIG. Then, due to the operation of the shock absorber 21, the piston rod 24 gently rises while attenuating the ascent speed of the cord equalizer 10. As a result, the bottom rail 4 is gently lowered.

  When the piston rod 24 is raised to the state shown in FIG. 5D through the state shown in FIG. 5C, the bottom rail 4 is lowered to the lower limit and is suspended and supported by the ladder cord 2. . At this time, the upper end portion of the piston rod 24 reaches the operation rod 8 above the grip 11.

In the horizontal blind slat operating device configured as described above, the following operational effects can be obtained.
(1) The bottom rail 4 and the slat 3 are moved up and down by operating the cord equalizer 10 and pulling the lifting / lowering cord 9 from the head box 1 through the operation rod 8 or pulling the lifting / lowering cord 9 into the head box 1. be able to.
(2) The angle of the slat 3 can be adjusted by gripping the grip 11 and rotating the operation rod 8.
(3) Even when the bottom rail 4 and the slat 3 are lowered by their own weight, the lowering speed of the bottom rail 4 can be attenuated by the operation of the shock absorber 21 when the bottom rail 4 is lowered to the vicinity of the lower limit. Therefore, even when the operation of the stopper device is mistakenly canceled and the bottom rail 4 is inadvertently lowered by its own weight, a collision sound is generated due to the collision between the bottom rail 4 and the household goods in the vicinity of the lower limit position of the bottom rail 4. Can be prevented.
(4) The lowering speed of the bottom rail 4 can be attenuated without rubbing the lifting / lowering cord 9 by the shock absorber 21 in the grip 11. Therefore, the lifting / lowering cord 9 is not worn.
(5) Since the shock absorber 21 operates only in the vicinity of the lower limit position of the bottom rail 4, the bottom rail 4 and the slat 3 are rapidly moved up and down except for the slat lowering operation in the vicinity of the lower rail 4. Can do.
(6) Since the shock absorber 21 is provided in the grip 11, the aesthetic appearance of the horizontal blind is not impaired.
(7) Since the lifting / lowering cord 9 is led out from the operation rod 8 through the piston rod 24, the lifting / lowering cord 9 does not interfere with the operation of the shock absorber 21.
(8) Since the impact protection material 29 is attached to the lower end of the piston rod 24, even if the code equalizer 10 collides with the lower end of the piston rod 24, no loud collision noise is generated.
(9) The same braking force can be applied to the plurality of lifting / lowering cords 9 with one shock absorber 21 via the cord equalizer 10. Therefore, the bottom rail 4 can be lowered while maintaining the horizontal direction near the lower limit of the bottom rail 4.
(10) Since a uniform damping force can be generated in the movement range of the piston rod 24, even if the position of the code equalizer 10 attached at the lower end of the lifting / lowering cord 9 is slightly shifted, the bottom rail 4 is near the lower limit position. The descending speed can be stably attenuated.
(Third embodiment)
FIG. 7 shows a third embodiment. In this embodiment, a shock absorber 61 is provided in the head box 1. In the shock absorber 61, an outer cylinder 63 is supported in a horizontal direction at one end portion in the head box 1 via a fixed base 62. An inner cylinder 64 is fixed in the outer cylinder 63, and oil is filled between the inner cylinder 64 and the outer cylinder 63.

  A piston valve 65 is movably supported between the inner cylinder 64 and the outer cylinder 63, and a piston rod 66 is integrally provided on the piston valve 65, and the piston rod 66 is moved as the piston valve 65 moves. The outer cylinder 63 appears and disappears.

  A coil spring 67 is disposed between the piston valve 65 and one end of the outer cylinder 63, and the piston valve 65 is always urged toward the other end in the outer cylinder 63 by the urging force of the coil spring 67. Yes.

  The lifting / lowering cord 9 is inserted into the inner cylinder 64 and the piston rod 66, is suspended from one end of the head box 1, and the code equalizer 10 is attached to the lower end thereof. Further, a knot 68 that cannot be inserted into the piston rod 66 is formed in the vicinity of the lower end of the lifting / lowering cord 9, and when the bottom rail is lowered to near the lower limit, the knot 68 is engaged with the tip of the piston rod 66. ing.

  In the lifting device configured as described above, when the bottom rail is lowered to the vicinity of the lower limit, the knot 68 is engaged with the piston rod 66. Then, the pulling speed of the lifting / lowering cord 9 is reduced by the braking force accompanying the movement of the piston rod 66, and the lowering speed of the bottom rail is reduced.

  When the lifting / lowering cord 9 is pulled out from the head box 1 and the bottom rail is pulled up, the piston rod 66 is returned to the state shown in FIG. 7 by the urging force of the coil spring 67 in the shock absorber 61.

  In the lifting device as described above, since the shock absorber 61 is accommodated in the head box 1, an operating rod hanging from the head box 1 is not required. Therefore, in a solar radiation shielding device such as a pleated curtain or a lifting curtain in which the operating rod is not suspended and supported from the head box, the aesthetics of the lifting device that can reduce the descending speed of the bottom rail can be improved.

  In addition, when a sufficient space for disposing the shock absorber 61 between the support member 5 that guides the lifting / lowering cord 9 that supports the bottom rail in a suspended manner into the head box 1 and one end of the head box 1 cannot be secured. The configuration is as shown in FIG. That is, the lifting / lowering cord 9 is drawn from the support member 5 to the other end side of the head box 1 and hooked on the pulley 69, and further guided to one end side of the head box 1 and hung downward.

  Then, a space for disposing the shock absorber 61 can be easily secured in the moving path of the lifting / lowering cord 9 from the other end side to the one end side of the head box 1.

You may implement the said embodiment in the following aspects.
-You may provide the said braking device in the raising / lowering apparatus which raises / lowers the curtain cloth of a pleated curtain or curtain cloth. In this case, since there is no need to rotate the operating rod, it may be a rod body that is suspended and supported from the head box so as not to rotate, instead of the operating rod.

It is a front view which shows a horizontal blind. It is sectional drawing which shows a braking device. It is sectional drawing which shows a braking device. It is sectional drawing which shows a braking device. (A)-(d) is a front view which shows the braking device of 2nd embodiment. It is sectional drawing which shows a shock absorber. It is a front view which shows 3rd embodiment. It is a top view which shows the modification of 3rd embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Head box, 3 ... Sunlight shielding material (slat), 4 ... Bottom rail, 8 ... Rod (operating rod), 9 ... Lifting cord, 10 ... Protrusion (code equalizer), 11 ... Grip, 12 ... Braking body (Magnets), 14 ... projections (caulking terminals), 21, 61 ... shock absorbers, 24 ... braking bodies (piston rods), 63 ... rod bodies (outer cylinders), 68 ... projections (knots).

Claims (6)

A solar radiation shielding device that inserts a lifting / lowering cord into a rod provided in a head box and pulls the lifting / lowering cord out of the head box via the rod or pulls the lifting / lowering cord into the head box via the rod. In
The rod body movably supports a braking body that generates a braking force relative to the rod body, and a protrusion is provided on the lifting / lowering cord led out from the rod body, and the inside of the head box of the lifting / lowering cord is provided. A shielding material lifting / lowering device for a solar radiation shielding device, wherein the projection is engaged with the braking body during a retracting operation to reduce a retracting speed of the lifting / lowering cord.   The rod body is formed of a metal pipe that is supported suspended from the head box, and the brake body is composed of a magnet supported so as to be movable in the rod body, and eddy current is generated in the rod body by the movement of the magnet. The shielding material lifting / lowering device for a solar radiation shielding device according to claim 1, wherein the moving speed of the magnet is suppressed.   3. A shielding material lifting / lowering device for a solar radiation shielding device according to claim 1, wherein a cylindrical grip is attached to a lower end portion of the rod body, and the grip is formed of the same material as the rod body.   2. The brake body is constituted by a piston rod of a shock absorber that can be projected and lowered downward from the rod body, and the projection is constituted by a cord equalizer attached to a lower end of the elevating cord. The shielding material raising / lowering device of the solar radiation shielding apparatus of description.   5. The shielding material lifting / lowering device for a solar radiation shielding device according to claim 1, wherein the rod body is an operation rod for adjusting the angle of a slat.   The rod body and the brake body are constituted by an outer cylinder of a shock absorber accommodated in the head box and a piston rod, and the protrusion is provided on the lifting cord and is a knot that engages with the piston rod. The shielding material raising / lowering device of the solar radiation shielding apparatus of Claim 1.

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