JP2005200942A - Twin solar radiation shielding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a bottom rail from becoming a state of pushing up an intermediate rail, in a twin solar radiation shielding device. <P>SOLUTION: In this twin solar radiation shielding device, one end parts of first and second lifting cords suspended from a head box, are respectively fastened to the bottom rail and the intermediate rail; an upper side shielding material is stretched between the head box and the intermediate rail, and a lower side shielding material is stretched between the intermediate rail and the bottom rail, respectively; the other end part of the first lifting cord is wound on a drum arranged in the head box; a rotary shaft of the drum is connected to the output side of a drum operation mechanism positioned in an end part of the head box; the other end part of the second lifting cord is wound around a guide arranged in the head box; and is next suspended via a cord stopper. The device is provided with a brake means for allowing rotation of the drum rotary shaft when the intermediate rail exists in an upper limit position in a head rail and checking bottom rail lifting rotation of the drum rotary shaft when the intermediate rail exists in a position lower than the upper limit. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a twin-type solar radiation shielding device in which solar radiation shielding materials such as a pleated screen are connected vertically.

  The bottom rail is suspended so that it can be lifted and lowered from the head box via the first lifting / lowering cord, and the intermediate rail is also suspended so that it can be lifted / lowered via the second lifting / lowering cord, and the upper shielding material is stretched between the head box and the intermediate rail. The twin-type solar radiation shielding device in which the lower shielding material is stretched between the intermediate rail and the bottom rail can realize various dimming by raising and lowering the intermediate rail.

  However, a twin-type solar shading device, for example, a twin-type pleated screen device, is a method in which the lower end portion of the second lifting / lowering cord is fixed to the intermediate rail, so that when the first lifting / lowering cord is operated to raise the bottom rail When the bottom rail pushes up the intermediate rail, the second elevating cord loosens and protrudes from between the upper pleat screens, and the appearance becomes unsightly. Moreover, the loosened 2nd raising / lowering cord hits the raising / lowering cord passage hole, and prevents the raising / lowering of the next intermediate rail.

In order to prevent this, it has been proposed to provide a slack detecting means for detecting the slack of the second lifting / lowering cord, and when the slack means detects the slack of the second lifting / lowering cord, the lifting operation of the first lifting / lowering cord is locked. ing. However, there is a problem that the slack detection means is difficult to adjust and tends to malfunction.
JP 2002-115474 A

  The present invention has been made to solve the above problems, and the problem is that in the twin-type solar shading device, the bottom rail is in a state of pushing up the intermediate rail during the raising operation of the first elevating cord. Is to prevent this.

  In order to solve the above-mentioned problem, the means employed by the present invention is to suspend one end of the first and second elevating cords hanging from the head box on the bottom rail and the intermediate rail, respectively. An upper shielding material is stretched between the rails, and a lower shielding material is stretched between the intermediate rail and the bottom rail, and the other end of the first lifting / lowering cord is wound around a drum provided in the head rail. The rotating shaft that rotates the head is connected to the output side of the drum operating mechanism located at the end of the head box, the other end of the second lifting / lowering cord is hung on a guide provided in the head box, and then suspended via a cord stopper In the twin-type solar shading device to be operated, when the intermediate rail is in the upper limit position in the head rail, the rotation of the drum rotation shaft is allowed. When Lumpur is lower than the upper limit position, the rotation of raising the bottom rail of the drum rotation axis and providing a brake means for restraining.

  The twin means of the solar radiation shielding device according to the present invention allows the rotation of the drum rotation shaft when the intermediate rail is at the upper limit position, but when the intermediate rail is at a position lower than the upper limit, Since the rotation of the drum rotating shaft to be raised is stopped, the raising operation of the first lifting / lowering cord is limited to the case where the intermediate rail is at the upper limit position. Therefore, since the bottom rail does not push up the intermediate rail, the second elevating cord is loosened and protrudes from between the upper shielding materials, and the appearance is not unsightly.

  The twin-type solar shading device of the present invention suspends the intermediate rail and the bottom rail from the head box, stretches an upper shielding material between the head box and the intermediate rail, and lowers between the intermediate rail and the bottom rail. The shielding material is stretched, the plurality of first lifting / lowering cords are operated through the first drum provided in the head box to raise and lower the bottom rail, and the plurality of second lifting / lowering cords are provided via the second drum provided in the head box. This is a method to raise and lower the intermediate rail by operating.

  The other end of the first lifting / lowering cord is wound around a drum provided in the head rail, and a rotating shaft for rotating the drum is connected to the output side of the drum operation mechanism located at the end of the head box. The other end of the second lifting / lowering cord is hung on a guide provided in the head box, and is then suspended via a cord stopper. When the intermediate rail is in the upper limit position in the head rail, the rotation of the drum rotation shaft is allowed, but when the intermediate rail is in a position lower than the upper limit, the rotation of the drum rotation shaft in the direction of raising the bottom rail is inhibited. Brake means is provided.

The brake means comprises a fixed frame provided on the head box, a claw wheel fixed to the rotating shaft of the drum, and a claw body provided on the fixed frame so as to be movable up and down, and the claw body has an intermediate rail at the upper limit position. It is preferable that when the intermediate rail is pushed up by the intermediate rail and disengaged from the position where it engages with the claw wheel and descends from the upper limit position, it is lowered by its own weight and engaged with the claw wheel. in this case,
The claw body includes a hanging lever, and the intermediate rail pushes up the claw body through the lever, and a spring is interposed between the claw body and the lever.

  Skilled users do not perform excessive operations such as pushing up the intermediate rail with the bottom rail, so there is no need to activate the brake means. For this reason, it is preferable to provide a mechanism for stopping the operation of the brake means in the head box.

  The present invention will be described based on an embodiment of a twin pleated screen device shown in the drawings. FIG. 1 is a front view showing a main part of the embodiment, and FIGS. 2 and 3 are enlarged side views showing a brake operation state and a brake release state of the brake means of FIG.

  As shown in FIG. 1, the twin pleated screen device includes a bottom rail 3 that can be lifted and lowered via a first lifting cord 2 that hangs down from a head box 1, and an intermediate rail 5 that can be lifted and lowered via a second lifting cord 4. Suspend each one. An upper pleat screen 6 is stretched between the head box 1 and the intermediate rail 5, and a lower pleat screen 7 is stretched between the intermediate rail 5 and the bottom rail 3.

  One end of the first lifting / lowering cord 2 passes through the lifting / lowering cord through holes of the upper and lower pleat screens 6 and 7 and is fixed to the bottom rail 3. The other end of the first lifting / lowering cord 2 is wound around a drum 9 provided in the head box 1, and the drum 9 is rotatably supported by a holder 10 provided in the head box 1. The rotating shaft 11 of the drum 9 is directly connected to the output side of the drum operating mechanism 12 disposed at one end of the head box 1. The output side of the drum operation mechanism 12 is rotated by the operation of the operation code 13.

  One end of the second lifting / lowering cord 2 passes through the lifting / lowering cord passage hole 8 of the upper pleat screen 6 and is fixed to the intermediate rail 5. The other end of the second lifting / lowering cord 4 is hung on a guide 14 provided in the head box 1, then passed through a cord stopper 15, and then suspended from the head box 1 and tied to an operation knob 25. Brake means 16 is provided in the head box 1. The drum rotating shaft 11 passes through the brake means 16, and the lever 21 of the claw body 17 of the brake means 16 protrudes from the bottom of the head box 1.

  As shown in FIG. 2, the brake means 16 is fixed to the head box 1 and a claw wheel 18 that is externally fitted to the drum rotation shaft 11, a claw body 17 that engages with the claw wheel 18, and the head box 1. And a fixed frame 19 that holds the claw body 17 through the vertical guide groove 24 so as to be movable up and down. The claw body 17 includes a claw portion 22 that meshes with the claw wheel 18 and a lever 21 that is suspended via a spring 20. The lever 21 hangs down from the bottom hole 23 of the head box 1 and bends horizontally.

  When the intermediate rail is at a position lower than the upper limit, the claw body 17 is lowered by its own weight, and the claw portion 22 enters the rotation range of the claw wheel 18. At this time, when the drum rotation shaft 11 rotates in the bottom rail ascending direction, the claw portion 22 and the claw wheel 18 are engaged with each other. However, when the drum rotating shaft 11 rotates in the bottom rail lowering direction, the claw portion 22 and the claw wheel 18 slide and do not engage with each other.

  When the intermediate rail 5 is in the upper limit position, as shown in FIG. 3, the intermediate rail 5 pushes up the lever 21 of the brake means 16 and presses the claw body 17 against the ceiling of the fixed frame 19 against the spring 20. At this time, since the claw portion 22 is separated from the claw wheel 18 and does not engage with the claw wheel 18, the rotation of the drum rotation shaft 11 is free.

  When the knob 25 of the second lifting / lowering cord 4 is pulled, the intermediate rail 5 rises, the upper pleat screen 6 is reduced, and the lower pleat screen 7 is enlarged. When the knob 25 is locked to the cord stopper 15, the intermediate rail stops, and when the lock is released, the intermediate rail descends by its own weight.

  When the operation cord 13 is pulled and the bottom rail 3 is moved up and down, as shown in FIG. 3, if the intermediate rail 5 is at the upper limit position, the brake means 16 does not restrict the rotation of the drum rotating shaft 11. The ascending operation and the descending operation are free. However, as shown in FIG. 2, when the intermediate rail 5 is at a position lower than the upper limit, the brake means 16 stops the rotation of the drum rotating shaft 11 in the bottom rail ascending direction. Although it is possible, the raising operation of the bottom rail 5 becomes impossible. Thus, since the raising operation of the bottom rail 3 is limited when the intermediate rail 5 is at the upper limit position, the bottom rail 3 does not push up the intermediate rail 5. Therefore, the second elevating cord 4 is not loosened and protrudes from between the upper pleat screens 6 so that the appearance becomes unsightly.

  Skilled users do not perform excessive operations such as pushing up the intermediate rail with the bottom rail, so there is no need to activate the brake means. For this reason, a brake release cover is prepared as a mechanism for always releasing the brake of the brake means.

  As shown in FIGS. 4 and 5, the brake release cover 27 is attached to a horizontal guide groove 26 provided on the back surface of the head box 1 so as to be slidable in the horizontal direction. The lever 21 is lifted to remove the claw body 17 from the position where it engages with the claw wheel 18, and as shown by the arrow, the brake release cover 27 is moved directly below the lever 21 to support the lifted lever 21. At this time, since the claw body 17 is separated from the claw wheel 18, the brake means 16 is held in the brake released state. When the brake release cover 27 is shifted from the lever 21, the lever 21 is lowered together with the claw body 17, and the brake means 16 is in a state where the brake can be operated.

The front view which shows the principal part of the twin pleats screen apparatus of an Example, FIG. 1 is an enlarged side view showing a brake operating state of the brake means of FIG. FIG. 2 is an enlarged side view showing a brake released state of the brake means of FIG. The rear view which shows the principal part of an Example provided with a brake release cover, The expanded side view which shows the brake release state of the brake means by the brake release cover of FIG.

Explanation of symbols

1: Head box 2: First lifting cord 3: Bottom rail 4: Second lifting cord 5: Intermediate rail 6: Upper pleat screen 7: Lower pleat screen 8: Lifting cord through hole 9: Drum 10: Holder 11: Rotation Shaft 12: Drum operation mechanism 13: Operation code 14: Guide 15: Code stopper 16: Brake means 17: Claw body 18: Claw wheel 19: Fixed frame 20: Spring 21: Lever 22: Claw portion 23: Bottom hole 24: Up and down Guide groove 25: Knob 26: Horizontal guide groove 27: Brake release cover

Claims (6)

One end portions of the first and second lifting cords hanging from the head box are respectively attached to the bottom rail and the intermediate rail and suspended, and an upper shielding member is interposed between the head box and the intermediate rail, and the intermediate rail and the intermediate rail. A lower shielding member is stretched between the bottom rail and the other end of the first lifting / lowering cord is wound around a drum provided in the head box, and a rotating shaft for rotating the drum is provided at the end of the head box. In a twin type solar shading device that is connected to the output side of the drum operation mechanism that is located, hangs the other end of the second lifting / lowering cord around a guide provided in the head box, and then hangs down via a cord stopper,
When the intermediate rail is in the upper limit position, the head box does not operate, but when the intermediate rail is lower than the upper limit, it operates to stop the rotation of the drum rotation shaft in the bottom rail ascending direction. A twin-type solar shading device characterized by providing a brake means. The twin-type solar radiation shielding device according to claim 1, wherein a mechanism for stopping the operation of the brake means is provided in the head box. The brake means includes a fixed frame provided in the head box, a claw wheel fixed to the rotating shaft of the drum, and a claw body provided on the fixed frame so as to be movable up and down. The claw body has an intermediate rail at an upper limit position. When the intermediate rail is pushed up by the intermediate rail and disengaged from the position where it engages with the claw wheel, and when the intermediate rail descends from the upper limit position, it is lowered by its own weight and engaged with the claw wheel. The twin-type solar shading device as described. The twin-type solar radiation shielding device according to claim 3, wherein the nail body includes a hanging lever, and the intermediate rail pushes up the nail body via the lever. The twin-type solar radiation shielding device according to claim 4, wherein a spring is interposed between the claw body and the lever. The mechanism for stopping the operation of the brake means is a cover that is supported by the head box so as to be horizontally movable. The cover is located at a position where the lever is lifted to separate the claw body from the claw wheel at a position covering the brake means. The twin-type solar radiation shielding device according to claim 5, wherein the twin-type solar radiation shielding device is held.

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