WO2005056968A1

WO2005056968A1 - Lift unit of sun shade

Info

Publication number: WO2005056968A1
Application number: PCT/JP2003/015964
Authority: WO
Inventors: Seiya Abo; Tadashi Okamura; Takahiro Yamazaki
Original assignee: Tachikawa Corporation
Priority date: 2003-12-12
Filing date: 2003-12-12
Publication date: 2005-06-23
Also published as: AU2003289068A1; CN1910334A; CN1910334B

Abstract

A lift unit of sun shade comprising first and second stopper units capable of making a selection between a state for elevating/lowering a sun shade independently while blocking gravitational lowering thereof and a state for allowing gravitational lowering by operating a single operational cord, a first clutch unit capable of making a selection among a lifting operation, a gravitational lowering operation and an operation for preventing gravitational lowering of a first sun shade by operating the operational cord in one way, and a second clutch unit capable of making a selection among a lifting operation, a gravitational lowering operation and an operation for preventing gravitational lowering of a second sun shade by operating the operational cord in the other way.

Description

Description Solar radiation shield lifting device

Technical field

The present invention relates to a solar shading device such as a horizontal blind, a lift curtain, a pleated curtain, a roll blind, etc., in which a solar shading material is suspended and supported, and each shading material can be moved up and down with one operation code. In addition, the present invention relates to an elevating device that performs a lowering operation of each shielding material by using the weight of the shielding material. Background art

In the lift-up curtain described in Japanese Patent Application Laid-Open No. 11-187973, the curtain fabric can be moved up and down by operating a pole chain. If the ball chain is operated in the direction of raising the curtain fabric, the curtain fabric can be pulled up.

If the ball chain is released after the curtain fabric is pulled up to the desired position, the curtain fabric prevents the curtain fabric from falling by its own weight, and the fabric is suspended and supported at the desired position.

When lowering the curtain fabric, operate the ball chain slightly in the direction of raising the curtain fabric, and then release the ball chain, the stover operation is released, and the curtain fabric falls by its own weight.

In addition, if the ball chain is operated in the direction in which the curtain fabric is lifted while the curtain fabric is suspended and supported at a desired position, the curtain fabric can be further lifted. In the roll blind disclosed in Japanese Patent Application Laid-Open No. H10-1766471, by operating one operation code to one side, one screen can be moved up and down. By operating on the other, it is possible to raise and lower the other screen.

However, in the lifting device with a lifting force of one tenth described in Japanese Patent Application Laid-Open No. H11-18773, if the curtain fabric is doubled, a ball chain for raising and lowering the curtain fabric is used. Also requires two.

In order to operate each curtain fabric, it is necessary to select and operate one of the lift codes. Also, in order to operate both curtain fabrics, it is necessary to operate one ball chain and then switch to the other ball chain for operation. Therefore, there is a problem that the operation of raising and lowering the curtain fabric becomes complicated.

Further, with the lifting device described in Japanese Patent Application Laid-Open No. H10-1766471, a double screen can be moved up and down with a single operation code. The purpose of the present invention is to make it possible to independently raise and lower the double solar shading material with one operation code, and to raise and lower each solar shading material. An object of the present invention is to provide an elevating device which can automatically operate any one of the descending operations by a touch operation of an operation code so that the solar shading material can be easily moved up and down. Disclosure of the invention

In the present invention, the first and second solar shading members are suspended and supported from the head box, and the first and second solar control members are operated by operating one endless operation code hanging from the head box. The first and second moving parts In the solar shading elevating device, which can independently raise and lower the solar shading material, it was possible to select the state in which the first and second solar shading materials are prevented from falling by their own weight and the state in which the own weight is allowed to fall Operating the first and second stopper units and one of the operation codes to operate the first lifting and lowering unit and the first stopper unit to raise and lower the second solar shading material. The first climbing unit, which allows the user to select the operation of raising the first solar shading material, descending operation by own weight, and self-weight drop prevention operation, and operating the other operation code to move up and down the second Activating the operating part and the second stopper unit, pulling up the second solar shading material without raising and lowering the first solar shading material, descending operation by its own weight, and self-weight drop prevention operation Can be selected Second Kuratchu - and a Tsu door.

In another aspect of the present invention, the first clutch unit includes a first rotating drum that is rotated based on an operation of an operation code, a first transmission drum that drives a first lifting / lowering operation unit, A first clutch unit for transmitting the rotation of the first rotary drum to the first transmission drum, and the first clutch unit is configured to rotate the first rotary drum based on the operation of one of the operation codes. Can be transmitted to the first transmission drum, and when the first transmission drum is rotated based on its own weight drop of the first solar shading material, the transmission drum is separated from the first rotary drum to be freely separated. A second rotating drum which is rotatable based on an operation of an operation code, and a second transmission drum which drives a second lifting / lowering unit; Transmit the rotation of the second rotary drum to the second transmission drum A second clutch unit configured to transmit the rotational force of the second rotary drum based on the operation of the other operation code to the second transmission drum. When the second transmission drum is rotated based on its own weight drop of the solar shading material, the transmission drum is separated from the second rotating drum to be freely rotatable. In another aspect of the present invention, the first and second solar shading members are suspended and supported from the head box, and one endless operation code hanging from the head box is operated. In this way, the first and second solar shading members are operated, and the first and second solar shading members can be independently raised and lowered. The first stopper unit allows the user to select between a state in which the self-weight drop is allowed, a state in which the automatic lifting operation of the second solar shading material is blocked, and a state in which the automatic lifting operation is allowed. The first lifting unit and the first stopper unit are operated by the operation of one of the operation codes and the second stopper unit that can be selected, and the second solar shading material is raised and lowered. Without the need for primary solar radiation shielding The first clutch unit, which allows selection of a lifting operation, a lowering operation by its own weight, and an operation of preventing its own weight descent, and the operation of the other operation code to the second lifting / lowering operation unit and the second A second clutch unit that operates the stop unit to select a lowering operation of the second solar shading material, an automatic raising operation, and an automatic raising preventing operation without raising and lowering the first solar shading material. And with.

In another aspect of the present invention, the first and second clutch portions include a clutch drum rotatably supported by a shaft, a guide groove formed on an outer peripheral surface of the clutch drum, and a guide groove. A clutch pole that moves along with the clutch drum, and prevents the rotation of the clutch drum based on the rotational force acting from the clutch drum, and the first or second rotation based on the rotational force acting from the first or second rotating drum. The guide groove is composed of a stop panel that rotates the drum and the clutch drum integrally, and the guide groove transmits the rotating power of the first or second rotating drum to the first or second transmitting drum via a clutch ball. And a release groove that allows the first or second transmission drum to freely rotate with respect to the first or second rotating drum. It was to so. '

In another aspect of the present invention, the first and second clutch portions include a clutch drum rotatably supported by a shaft, a guide groove formed on an outer peripheral surface of the clutch drum, and a first or second clutch portion. A clutch protrusion formed on the rotating drum of the first type and moving along the guide groove; and a rotation force acting on the first or second transmission drum while preventing the rotation of the clutch drum based on the rotating force acting on the clutch drum. And a stop panel for integrally rotating the first or second drive drum and the clutch drum, and the guide groove includes a first or second drive drum for the first or second drive drum. An engagement groove for moving the first or second transmission drum to the first or second drive drum; and a release groove for freely rotating the first or second transmission drum with respect to the first or second drive drum. It was constructed from.

In another aspect of the present invention, the torque transmitting means for transmitting the rotational force to the first and second rotary drums based on the operation of the operation code and the first and second rotary drums are limited to a predetermined angle. According to another aspect of the present invention, the first and second elevating / lowering portions are provided with either a curtain fabric having a lifting force of one tenth or a screen of a roll blind. I tried to go up and down. Brief Description of Drawings

FIG. 1 is a partially cutaway front view showing a double uplift curtain according to the first embodiment.

FIG. 2 is a right side view showing the first embodiment.

FIG. 3 is a partially broken left side view showing the first embodiment.

FIG. 4 is a cross-sectional view showing the operating device. FIG. 5 is a front view showing a pulley in the operating device.

FIG. 6 is a front view showing a gear mechanism in the operating device.

FIG. 7 is a front view showing the plate.

FIG. 8 is an exploded perspective view showing the clutch unit.

FIG. 9 is a side view showing the driving drum.

FIG. 10 is an explanatory diagram showing the operation of the clutch unit. FIG. 11 is a developed view showing a guide groove of the transmission drum.

FIG. 12 is an explanatory diagram showing the operation of the clutch unit. FIG. 13 is an explanatory diagram showing the operation of the clutch unit. FIG. 14 is an explanatory diagram showing the operation of the clutch unit. FIG. 15 is an explanatory diagram showing the operation of the clutch unit. FIG. 16 is an explanatory diagram showing the operation of the clutch unit. FIG. 17 is a sectional view showing the stopper unit.

FIG. 18 is a developed view showing the stopper guide groove.

FIG. 19 is an explanatory diagram showing the operation of the clutch unit. FIG. 20 is an explanatory diagram showing the operation of the clutch unit. FIG. 21 is an explanatory diagram showing the operation of the clutch unit. FIG. 22 is a partially cutaway front view showing the second embodiment. FIG. 23 is a right side view showing the second embodiment.

FIG. 24 is a front view showing the operating device.

FIG. 25 is a front view showing the operating device.

FIG. 26 is a cross-sectional view showing the third embodiment.

FIG. 27 is a cross-sectional view showing the third embodiment.

FIG. 28 is an exploded perspective view showing the third embodiment. FIG. 29 is a cross-sectional view showing the third embodiment.

FIG. 30 is a sectional view showing the third embodiment. FIG. 31 is a front view showing the operating device according to the ffl embodiment.

FIG. 32 is a front view showing the operating device according to the fourth embodiment. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the best mode for carrying out the present invention will be described.

(First embodiment)

First, a first embodiment in which the present invention is embodied in a double tanning curtain as a solar shading device will be described with reference to the drawings.

As shown in Figs. 1 and 2, the front cloth 2a of the curtain is lifted up from the front of the head box 1 and suspended and supported as the first solar shading material. The side fabric 2b is suspended and supported as a second solar shading material.

A plurality of ring tapes 3 are vertically attached to the back surface of the front fabric 2a and the rear fabric 2b, and a plurality of rings 4 are attached to the ring tape 3 at equal intervals. I have.

An elevating cord 5a is passed through the ring 4 attached to the front fabric 2a. As shown in FIG. 3, the upper end of the lifting / lowering code 5a is attached to a winding shaft (first lifting / lowering operation unit) 7a rotatably supported by the support member 6 in the head box 1. It is wound from the front side of head box 1.

A hook 8a is attached to the lower end of the lifting cord 5a, and the lowermost ring 4 of the plurality of rings 4 is suspended from the hook 8a. Accordingly, when the lifting cord 5a is wound on the winding shaft 7a, the front fabric 2a is pulled up while being folded in order from the lower end as shown in FIG.

When the lifting / lowering cord 5a is unwound, the front fabric 2a returns to a state of hanging from the head box 1 in order from the top. The elevating cord 5b is passed through the ring 4 of the rear fabric 2b. As shown in FIG. 3, the upper end of the lifting / lowering cord 5b is located behind the winding shaft 7a, and is supported by the support member 6 so as to be rotatable behind the winding shaft 7a. The head box 1 is wound around from behind.

A hook 8b is attached to a lower end of the lifting / lowering cord 5b, and a lowermost ring 4 of the plurality of rings 4 is suspended from the hook 8b. Therefore, when the lifting cord 5b is wound on the winding shaft 7b, the rear fabric 2b is pulled up while being folded in order from the lower end.

When the lifting / lowering cord 5b is unwound, the rear fabric 2b returns from the head box 1 to the state where it is hung in order from the top.

Drive shafts 9a and 9b formed of hexagonal shafts are passed through the central portions of the winding shafts 7a and 7b. , 7 b are rotated.

The first lifting / lowering section is constituted by the lifting / lowering cord 5a, the winding shaft 7a, and the driving shaft 9a as described above, and includes the lifting / lowering code 5b, the winding shaft 7b, and the driving shaft 9b. A second elevating unit is configured.

Next, an operating device for rotating and driving the drive shafts 9a and 9b will be described.

As shown in FIG. 4, the operation device 10 provided at one end of the head box 1 has a base end of the case 11 fitted and fixed to an end of the head box 1. The front end of the case 11 extends downward from the lower edge of the head bottom 1, and a cap 13 having the same shape as the front end is screwed through a plate 12 shown in FIG.

As shown in FIGS. 5 and 6, a support shaft 14a is formed at the tip of the case 11 and a support shaft 14a is formed at a lower portion of the cap 13 so as to face the support shaft 14a. b is formed. In the tip of case 11, support shafts 14a, 1 A drive gear 15 is rotatably supported on 4b. The drive gear 15 has a hexagonal shaft-shaped shaft portion 16 protruding toward the cap 13, and a pulley 17 is fitted to the shaft portion 16. An endless ball chain 18 is mounted on the pulley 17 as an operation code.

When the pulley 17 is rotated by operating the pole chain 18, the drive gear 15 is rotated integrally with the pulley 17. Note that a plate 12 is interposed between the drive gear 15 and the pulley 17.

Two first and second shafts 19a and 19b are arranged above the drive gear 15 and the boogie 17 at positions equidistant from the rotation center of the drive gear 15 and I have. The first and second shafts 19a and 19b have hexagonal shafts at their tips and hexagonal holes 20 formed at the plates 12 and caps 13 at the tips. a, 20b are fitted.

Therefore, the first and second shafts _{9 a} and 19 b are non-rotatably supported by the head box 1 via the cap 13 and the plate 12. As shown in FIG. 6, the first and second shafts 19a and 19b rotatably support transmission gears 21a and 21b corresponding to the driving gear 15 respectively. . When the driving gear 15 is rotated in the direction of arrow A shown in FIG. 6, the transmission gears 21a and 21b are rotated in the direction of arrow b, and the driving gear 15 is rotated in the direction of arrow B. The transmission gears 21a and 21b are rotated in the direction of arrow a.

As shown in FIG. 8, a disk portion 22 having a larger diameter than the gear portion is formed at the distal end side of the transmission gears 21a and 2lb, and the outer peripheral portion of the disk portion has a distal end side. Two convex parts 23 protruding toward the center are formed symmetrically with respect to the center.

The rotation of the transmission gears 21a and 21b (torque transmission means) Via 23, it is transmitted to the first and second clutch units 24a, 24b supported by the first and second shafts 19a, 19b.

Next, the configuration of the first clutch unit 24a will be described.

As shown in FIGS. 8 and 15 (a) and (b), the first clutch unit 24a is connected to the rotating drum 25, the clutch drum 26 as the first clutch unit, and the transmission It comprises a drum 27, a stop panel 28, a slip panel 29 and a first shaft 19a.

The rotating drum 25 is formed into a cylindrical shape, and the first shaft 19a is penetrated through a through hole 30 formed at the tip, and is rotated to the first shaft 19a. It is supported as much as possible and immovable in the axial direction.

At the outer periphery of the end face of the rotary drum 25, a notch 31 that can be engaged with the projection 23 of the transmission gear 21a is 90 from the center. It is formed within the range. Therefore, the transmission gear 21 a can rotate relative to the rotary drum 25 within a range of 90 °, and after the protrusion 23 abuts against the edge of the notch 31, the rotation drum 2 a 5 is rotated integrally with the transmission gear 21a. A semi-elliptical recess 32 is formed at the leading edge of the rotary drum 25 in the axial direction of the first shaft 19 a.

The clutch drum 26 is supported so as to be rotatable with respect to the first shaft 19 a and immovable in the axial direction, and one of the engagement drums 33 protrudes into the rotary drum 25. Is formed.

The engagement piece 33 is 60 with respect to the center. In the rotary drum 25, as shown in FIG. 9, a step portion 34 is formed within a range of 180 ° on the rotation locus of the engagement piece 33.

Therefore, the clutch drum 26 can rotate relative to the rotary drum 25 within a range of approximately 12.0 ° until the edge of the engagement piece 33 contacts the edge of the step 34. Has become. A stop panel 28 is wound around the first shaft 19a between the clutch drum 26 and the rotary drum 25. As shown in FIGS. 10 (a) and (b), the stop panel 28 has two ends 35 a, 35 b on both sides of the engagement piece 33, and a step portion 34 of the rotary drum 25. It is bent so as to protrude on the rotation trajectory of.

When the engaging piece 33 comes into contact with one of the ends 35a and 35b, the friction between the stop spring 28 and the first shaft 19a increases, and the clutch drum 26 Is prevented from rotating.

Also, when the step 34 of the rotating drum 25 comes into contact with one of the ends 35a and 35b, the friction between the stop panel 28 and the first shaft 19a decreases. The clutch drum 26 and the stop panel 28 rotate together with the rotary drum 25.

A guide groove 36 having a semicircular cross section is formed in the circumferential direction on the outer peripheral surface of the clutch drum 26. As shown in FIG. 11, the guide groove 36 is formed continuously so that the release grooves 38 at both ends are offset to the rotary drum 25 with respect to the engagement groove 37 at the center. Have been.

As shown in FIGS. 15 (a) and 15 (b), a clutch ball 39 formed of a steel ball is accommodated in the guide groove 36 so as to be movable in the guide groove 36. Further, when the clutch ball 39 moves in the guide groove 36, the clutch ball 39 is protruded and retracted from the concave portion 32 of the rotary drum 25 as shown in FIGS. It has become.

As shown in FIG. 15, a slip spring 29 is provided between the clutch drum 26 and the first shaft 19a. The clutch drum 26 is urged toward the transmission drum 27 by the urging force of the slip panel 29 having the first shaft 19a as a fulcrum.

The transmission drum 27 is rotatable with respect to the first shaft 19a and has a shaft. It is supported immovable in the direction. The distal end of the transmission drum 27 is formed so as to be rotatable around the outer periphery of the clutch drum 26, and three locking projections 40 protruding toward the rotary drum 25 are formed at equal intervals on the distal end surface. I have.

Then, as shown in FIG. 14, when the clutch pawl 39 is moved into the engagement groove 37, the clutch pawl 39 is moved to a position where it is engaged with one of the locking projections 40. I'm familiar.

As shown in FIGS. 4 and 8, a pair of connecting pieces 41 are formed at the base end of the transmission drum 27, and the connecting pieces 41 are fitted to the joint cap 42. A hexagonal hole is formed in the center of the joint cap 42, and the drive shaft 9a is inserted into the hexagonal hole.

Therefore, the drive shaft 9a rotates integrally with the transmission drum 27 via the joint cap 42.

The second clutch unit 24b is the same as the first clutch unit except that the clutch ball 39 is located on the opposite side to the locking projection 40 as shown in FIGS. 16 (a) and (b). The configuration is the same as that of the clutch unit 24a. The clutch drum 26 of the second clutch 24b operates as a second clutch.

As shown in FIG. 1, first and second stopper units 43a and 43b are disposed adjacent to the joint cap 42. Since the first and second stopper units 43a and 43b have the same configuration except that they operate in the same manner based on rotation in the opposite direction, the first stopper unit 43 Only a will be described.

The first stop unit 43a has the same configuration as the stop unit described in, for example, Japanese Patent Application Laid-Open No. 11-18773. As shown in FIG. 17, the stopper drum 44 has a drive shaft 9a fitted in the center and rotates integrally with the drive shaft 9a. The stopper case 45 is disposed around the stopper drum 44 and is non-rotatably supported by the head box 1. The stopper ball 46 is disposed between the stopper drum 44 and the stopper case 45.

On the inner peripheral surface of the stopper case 45, a slide groove 47 having a semicircular cross section for supporting the stopper ball 46 movably in a direction along the drive shaft 9a is formed. On the outer peripheral surface of the stopper drum 44, a guide groove 48 also having a semicircular cross section is formed so as to orbit around the outer peripheral surface.

The stopper ball 46 is movable along the slide groove 47 and the stopper guide groove 48. Therefore, when the stopper drum 44 is rotated, the stopper pole 46 is moved relatively along the outer peripheral surface of the stopper drum 44 along the stopper guide groove 48, while the stopper groove 46 slides. Move along 4 7.

The configuration of the stopper guide groove 48 will be described with reference to the developed view shown in FIG. In FIG. 18, when the stopper drum 44 is rotated in the direction in which the front cloth 2 a is pulled up, the stopper pole 46 moves relatively in the direction of arrow C on the stopper guide groove 48.

Further, the scan topper drum 4 4 when rotated in the pulled direction of the front fabric 2 a, scan topper ball 4 6 moves the scan topper guide groove ⁴ 8 above relatively arrow D direction.

A pull-down groove 49 is formed on one side of the outer peripheral surface of the stopper drum 44. A first return groove 50 branching in the direction of arrow C communicates with the pull-down groove 49, and the first return groove 50 joins the upward groove 51 in the direction of arrow C.

The lifting groove 51 communicates with a stop groove 52 branching in the direction of arrow D. The stop groove 52 terminates at the locking portion 53 in the direction of arrow D. Through the second return groove 54 extending in the direction of the mark C, it joins the pull-down groove 49.

In the first stopper unit 43a configured as described above, the drive shaft 9a is connected to the front fabric 2a via the first clutch unit 24a based on the operation of the ball chain 18. When rotated in the lifting direction, the stopper ball 4 6 moves in the arrow C direction in the lifting groove 51.

After lifting the front fabric 2a to the desired position and releasing the ball chain 18, the lifting cord 5a is rewound by the weight of the front fabric 2a, and the stopper drum is driven via the drive shaft 9a. 4 4 is rotated, and the stopper ball 4 6 moves in the arrow D direction in the lifting groove 51.

Then, the stopper ball 46 is engaged with the locking portion 53, and further rotation of the stopper drum 44 is prevented. Therefore, in this state, the own fabric 2a is prevented from falling under its own weight.

Next, when lowering the front fabric 2a, the ball chain 18 is operated to slightly raise the front fabric 2a, and the stopper ball 46 is moved from the locking portion 53 to the second return groove. It is guided into the down groove 49 through 54.

Then, since the stopper ball 46 can circulate in the downward groove 49 in the direction of arrow D, if the ball chain 18 is released, the lowering operation by the weight of the front fabric 2a becomes possible.

When the front fabric 2a is further pulled up from the state where the stopper balls 46 are engaged with the locking portions 53, the ball chain 18 is operated in the pulling direction of the front fabric 2a.

Then, the stopper ball 46 is guided from the locking portion 53 through the second return groove 54 into the pull-down groove 49, and further guided through the first return groove 50 into the pull-up groove 51. Is done. Therefore, the ball chain 18 The operation of raising the ground 2a becomes possible.

The stop unit 43b operates in the same manner as the first stop unit 43a based on the rotation of the drive shaft 9b in the opposite direction to the drive mechanism 9a of the stop unit 43a. I do.

Next, the operation of the double lift-up curtain configured as described above will be described.

[Pull up operation of the front fabric 2a]

To pull up the front fabric 2a, pull down the ball chain 18 hanging down from the pulley 17 to the indoor side. Then, the drive gear 15 is rotated in the direction of arrow A shown in FIG. 6, and accordingly, the transmission gears 21a and 2lb are rotated in the direction of arrow a.

With the rotation of the transmission gear 21a, the rotating drum 25 of the first clutch cut 24a is rotated in the same direction. Then, the rotary drum 25 rotates relative to the clutch drum 26, and the clutch pawl 39 moves from the release groove 38 to the engagement groove 37, as shown in FIGS. I do. Then, the clutch ball 39 is engaged with the concave portion 32 of the rotary drum 25 and the locking projection 40 of the transmission drum 27.

Further, as shown in FIG. 10 (b), the step portion 34 of the rotary drum 25 comes into contact with the end portion 35a of the stop panel 28. Then, the friction between the stop panel 28 and the first shaft 19a is reduced, and the rotary drum 25, the stop panel 28 and the clutch drum 26 rotate integrally. Therefore, the rotation of the rotary drum 25 is transmitted to the transmission drum 27.

When the transmission drum 27 is rotated, the drive shaft 9a is rotated via the joint cap 42. Then, the winding shaft 7a is rotated, the lifting code 5a is wound, and the front fabric 2a is pulled up.

At this time, the first stop unit 43a rotates the drive shaft 9a. At the same time, the stopper drum 4 4 rotates. Then, the stopper pole 46 moves relative to the locking portion 53 in the direction of arrow C, moves in the lowering groove 49, moves through the first return groove 50, and moves into the raising groove 51, It is in a state of orbiting inside the lifting groove 51.

Therefore, the front cloth 2a is pulled up by pulling the pole chain 18 hanging down to the room 內 side downward.

When the front fabric 2a is lifted, the rear fabric 2b is not moved up and down. That is, the drive gear 15 is rotated in the direction of arrow A, and the transmission gear 2 lb is rotated in the direction of arrow b. Then, as shown in FIGS. 16 (a) and (b), with the rotation of the clutch drum 26 stopped by the stop panel 28, the rotation drum 2 of the second clutch unit 24 b is rotated. Based on the rotation of 5, the clutch ball 39 moves from the engagement groove 37 into the release groove 38.

In this state, since the clutch ball 39 moves into the concave portion 32, it does not engage with the locking projection 40 of the transmission drum 27. Therefore, the rotation of the rotary drum 25 is not transmitted to the transmission drum 27.

Also, after the clutch ball 39 moves into the recess 32, when the step 34 of the rotary drum 25 comes into contact with the end 35a of the stop spring 28, the rotary drum 25 and the stop panel 2 8 and clutch drum 2 6

In the stopper unit 43b, the stopper ball 46 is engaged with the locking portion 53 to prevent the rear fabric 2b from falling by its own weight. Therefore, the rear fabric 2b does not move up and down when the front fabric 2a is lifted.

[Operation to stop raising the front fabric 2a]

After pulling up the front fabric 2a to the desired position and releasing the ball chain 18, the drive shaft 9a is wound with the lifting cord 5a by the weight of the front fabric 2a. Attempts to rotate in the return direction.

Then, in the first stopper unit 43a, the stopper pole 46 moves in the direction of the arrow D in the lifting groove 51 and engages with the locking portion 53. Then, further rotation of the drive shaft 9a is prevented, and the lowering of the weight of the front fabric 2a is prevented.

At this time, the transmission drum 27 is rotated with the rotation of the drive shaft 9a, and the rotary drum 25 is rotated with the rotation of the transmission drum 27. Then, the clutch pole 39 moves from the engagement groove 37 to the release groove 38 as shown in FIGS. 19 to 21. Further, since the rotating drum 25 can rotate relative to the transmission gear 21a within the range of the notch 31, the rotation of the rotating drum 25 is not transmitted to the transmission gear 21a.

Accordingly, since the drive gear 15 is not rotated, the second clutch unit 24b does not operate, and the rear fabric 2b is not lifted. [The lowering operation of the front fabric 2a]

When the front fabric 2a is to be lowered, the ball chain 18 hanging down to the room side is slightly pulled downward. Then, the rotary drum 25 of the first clutch cut 24 a is rotated via the drive gear 15 and the transmission gear 21 a, and the transmission drum 27 is rotated based on the rotation of the rotary drum 25. Is done. Based on the rotation of the transmission drum 27, the stopper drum 44 of the first stopper unit 43a is rotated, and the stopper ball 46 moves in the direction of arrow C shown in FIG. Move from 5 3 through the second return groove 54 to the down groove 49.

In this state, when the ball chain 18 is released, the stopper ball 46 is relatively rotatable in the downward groove 49 in the direction of arrow D, and the stopper drum 44 is rotatable. Then, the drive shaft 9a and the winding shaft 7a are in a rotatable state, the lifting cord 5a is rewound from the winding shaft 7a by the weight of the front fabric 2a, and the front fabric 2a is at the lower limit. It is possible to descend to.

At the start of such a descending operation, the transmission drum 27 and the rotary drum 25 rotate with the rotation of the drive shaft 9a, but the clutch drum 26 is prevented from rotating by the stop spring 28. ing.

Then, the stopper ball 46 moves from the engagement groove 37 to the release groove 38 in the guide groove 36 as shown in FIGS. 19 to 21, and releases as shown in FIG. 21. Move into groove 3 8.

Therefore, after the rotating drum 25 slightly rotates, the rotation of the transmission drum 27 is not transmitted to the rotating drum 25.

During the lowering operation of the front fabric 2a, the transmission gear 21b is slightly rotated via the drive gear 15 by the operation of the ball chain 18.

However, in the second clutch unit 24b, as shown in FIGS. 15 and 16, the clutch ball 39 moves in the direction away from the locking projection 40 of the transmission drum 27, so that the transmission drum 2 7 is not rotated.

Therefore, when operating the pole chain 18 to lower the front fabric 2a, the rear fabric 2b does not move.

Also, when the front fabric 2a starts the lowering operation, the rotary drum 25 is slightly rotated, but the rotary drum 25 is rotated relative to the transmission gear 21a by the notch 31. The rotation of the rotary drum 25 is not transmitted to the transmission gear 21a. Therefore, the lower fabric 2b does not move by the lowering operation of the front fabric 2a.

[Operation to stop lowering the front fabric 2a]

If you want to stop the lowering operation of the front fabric 2a halfway, Pull the ball chain 18 slightly down. Then, the drive gear 15 is rotated, and the rotary drum 25 of the first clutch unit 24a is rotated via the transmission gear 21a.

Based on the rotation of the rotary drum 25, the rotary drum 25 rotates relative to the clutch drum 26, and the clutch pole 39 is disengaged from the release groove 3 as shown in FIGS. 21, 20, and 19. Move from inside 8 into engaging groove 37.

Then, the locking projection 40 of the transmission drum 27 is engaged with the clutch ball 39, and the rotation of the transmission drum 27 is prevented. As a result, the rotation of the drive shaft 9a is prevented, the rotation of the stopper drum 44 is stopped, and the lowering operation of the front fabric 2a is stopped.

When the rotary drum 25 is further rotated from this state, the stopper pole 46 moves in the downward groove 49 in the first stop unit 43 a in the direction of the arrow C, and the first return. After moving through the groove 50, it moves into the lifting groove 51.

When the ball chain 18 is released in this state, the drive shaft 9a is rotated by the weight of the front fabric 2a, the stopper drum 44 is rotated, and the stopper ball 46 is moved into the lifting groove 51. Is relatively moved in the direction of arrow D.

Then, stopper ball 46 is locked by locking portion 53, and further relative movement is prevented, so that rotation of drive shaft 9a is prevented. Therefore, the lowering operation of the front fabric 2a is stopped.

Even in such a descent stop operation, the back cloth 2b does not move by operating the ball chain 18 as in the lifting operation and the descent operation of the front cloth 2a.

[Pulling operation of rear fabric 2 b]

To pull up the rear fabric 2b, pull the ball chain 18 hanging downward from the pulley 17 to the outdoor side. Then, drive gear 15 is shown in Fig. 6. The transmission gears 21a and 2lb are rotated in the direction of arrow a.

With the rotation of the transmission gear 21b, the rotary drum 25 of the second clutch unit 24b is rotated in the same direction. Then, the second clutch unit 24b and the stopper unit 43b, except for the direction of rotation, move the first clutch unit 24a and the first clutch unit 24a associated with the lifting operation of the front fabric 2a. Operates in the same way as the stop cut 43a.

As a result, the drive shaft 9b is rotated, the lifting cord 5b is wound up, and the rear fabric 2b is pulled up.

When the rear fabric 2b is lifted, the front fabric 2a is not moved up and down. That is, the drive gear 15 is rotated in the direction of arrow B, and the transmission gear 2la is rotated in the direction of arrow b. Then, in the first clutch unit 24 a, as shown in FIGS. 15 and 16, the rotation of the rotating drum 25 is stopped in a state where the rotation of the clutch drum 26 is stopped by the stop panel 28. The clutch ball 39 moves from the engagement groove 37 into the release groove 38 based on the rotation.

In this state, since the clutch ball 39 moves into the concave portion 32, it does not engage with the locking projection 40 of the rotating drum. Therefore, the rotation of the rotary drum 25 is not transmitted to the transmission drum 27.

Also, after the clutch ball 39 moves into the concave portion 32, when the step portion 34 of the rotary drum 25 comes into contact with the end portion 35a of the stop panel 28, the rotary drum 25 and the stop spring In the first stopper unit 43, in which the clutch drum 28 and the clutch drum 26 rotate integrally, the stopper ball 46 engages with the locking portion 53 to prevent the front fabric 2a from falling by its own weight. In state. Therefore, the front cloth 2a does not operate when the rear cloth 2b is pulled up. ヽ

[Lower operation of rear fabric 2 b]

When lowering the rear fabric 2b, slightly pull the ball chain 18 hanging down to the outdoor side. Then, the rotary drum 25 of the second clutch unit 24b is rotated via the drive gear 15 and the transmission gear 21b, and the transmission drum 27 is rotated based on the rotation of the rotary drum 25. You. Based on the rotation of the transmission drum 27, the stopper unit drum 4 4 of the stopper unit 4 3b is rotated, the stopper drum 44 is rotated, and the stopper ball 46 is turned into the arrow shown in FIG. 18. It moves in the C direction and moves from the locking portion 53 through the second return groove 54 into the pull-down groove 49.

When the pole chain 18 is released in this state, the stopper ball 46 can relatively circulate in the direction of the arrow D in the pull-down groove 49, and the stopper drum 44 can rotate.

Then, the drive shaft 9b and the winding shaft 7b are in a rotatable state, the lifting cord 5b is rewound from the winding shaft 7b by the weight of the rear fabric 2b, and the rear fabric 2b. Can be lowered to the lower limit.

At the start of such a lowering operation, the transmission drum 27 and the rotary drum 25 of the second clutch unit 24b rotate with the rotation of the drive shaft 9b, but the clutch drum 26 rotates. Toppane 28 prevents its rotation.

Then, the clutch pole 39 moves from the engagement groove 37 to the release groove 38 in the guide groove 36 as shown in FIGS. 19 and 20, and is released as shown in FIG. 21. Move into groove 3 8.

When lowering the rear fabric 2b, the ball chain 1 8 The transmission gear 21 a is slightly rotated via the drive gear 15 by the operation of the first clutch unit 24 a, but in the first clutch unit 24 a, the clutch ball 39 is moved from the locking projection 40 of the transmission drum 27. The transfer drum 27 does not rotate because it moves away.

Therefore, when operating the ball chain 18 to lower the rear fabric 2b, the front fabric 2a does not operate.

Also, when the rear fabric 2b starts the lowering operation, the rotating drum 25 of the second clutch unit 24b is slightly rotated, but the rotating drum 25 is notched by the notch 31 so that the transmission gear is rotated. The rotation of the rotating drum 25 is not transmitted to the transmission gear 21 b since the rotation relative to 21 b is performed. Therefore, the front fabric 2a does not move due to the lower fabric 2b lowering operation.

[Operation to stop lowering of rear fabric 2 b]

When stopping the lowering operation of the rear fabric 2b on the way, the ball chain 18 hanging down to the outdoor side is pulled slightly downward. Then, the drive gear 15 is rotated, and the rotary drum 25 of the second clutch unit 24 b is rotated via the transmission gear 2 lb.

Then, similarly to the operation of the first clutch unit 24a and the first stop unit 43a when the front fabric 2a is stopped, the second clutch unit 24b and the second stop unit are operated. G 4 3b operates, and the lowering operation of the back fabric 2b is stopped.

Even in such a descent stop operation, the front dough 2a does not operate by the operation of the ball chain 18 as in the raising and lowering operations of the rear dough 2b.

With the double-raised curtain as described above, the following operational effects can be obtained.

(1) —Operation of the front fabric 2 a by operating the book ball chain 18 Operation and lifting / lowering operation of the back fabric 2 b can be performed independently.

(2) Since the front fabric 2a and the rear fabric 2b can be lowered by their own weight based on the one touch operation of the ball chain 18, the lowering operation can be easily performed.

(3) The lifting and lowering operation of the front cloth 2a and the rear cloth 2b can be performed by one pole chain 18, so that the lifting and lowering operation can be performed easily and quickly.

(4) The back fabric 2b is not moved up and down when the front fabric 2a is moved up and down, and the front fabric 2a is not moved up and down when the rear fabric 2b is moved up and down.

(5) When pulling up the front fabric 2a, the ball chain 18 hanging down to the indoor side may be pulled down. If the ball chain 18 is released after the front fabric 2a has been pulled up to the desired position, the lower weight of the front fabric 2a is prevented, and the front fabric 2a is suspended and supported at the desired position. In the case of lowering the front fabric 2a, if the ball chain 18 hanging down to the indoor side is slightly pulled down and then released, the front fabric 2a can be lowered by its own weight. In order to stop the lowering operation of the front fabric 2a, the ball chain 18 suspended from the indoor side may be pulled slightly downward. Therefore, the operation of lifting and lowering the front fabric 2a can be performed by operating the ball chain 18 that is hung down indoors, so that the lifting operation can be performed quickly and easily.

(6) When pulling up the rear fabric 2b, the ball chain 18 hanging down to the outside of the room may be pulled down. Also, after lifting the back fabric 2 b to the desired position, release the ball chain 18 to prevent the back fabric 2 b from falling by its own weight, and the back fabric 2 b is suspended and supported at the desired position. Is done. When lowering the rear fabric 2b, the lower fabric 2b can be lowered by its own weight if the ball chain 18 hanging down from the outdoor side is slightly pulled down and then released. In order to stop the lowering operation of the rear fabric 2b, the pole chain 18 suspended from the outdoor side may be pulled slightly downward. Therefore, the raising and lowering operation of the rear fabric 2b can be performed by operating the ball chain 18 hanging down to the outdoor side, so that the raising and lowering operation can be performed quickly and easily.

(Second embodiment)

FIG. 22 and FIG. 23 show a second embodiment. In this embodiment, a lifting curtain is suspended and supported on the indoor side, and a roll blind is suspended and supported on the outdoor side. Each of the ball curtains is supported by a single ball chain as in the first embodiment. This enables independent lifting and lowering operations. The same components as those of the first embodiment will be described with the same reference numerals.

An operating device 61 is provided at one end of the head box 1. A pulley 17 shown in FIG. 24 is rotatably supported in the operation device 61, and a ball chain 18 is mounted on the pulley 17.

The pulley 17 is rotated based on the operation of the ball chain 18, and the drive gear 15 is rotated based on the rotation of the pulley 17. The rotation of the driving gear 15 is transmitted to transmission gears 62 a and 62 b shown in FIG.

The lift-up curtain hung from the head box 1 has the same configuration as the front fabric 2a hung to the indoor side in the first embodiment. Then, based on the rotation of the transmission gear 62 a, the first clutch unit 24 a and the first stopper unit 43 a are operated, and the same lifting operation as in the first embodiment is performed. Is possible.

Bearing plate 63 attached to the other end of head box 1 and operating device A winding shaft 64 of a roll blind is rotatably supported between the winding shaft 61 and the winding shaft 61. Then, a screen 68 is hung down from the outdoor side of the winding shaft 64 and laid.

A second clutch unit 24 b is provided at one end of the winding shaft 64. The second clutch unit 24b has the same configuration as the second clutch unit 24b of the first embodiment, and operates based on the rotation of the transmission gear 62b.

The transmission drum 27 of the second clutch unit 24 b rotates integrally with the winding shaft 64 via the pipe cap 65.

At the other end of the winding shaft 64, a known stopper unit 66 and a known oil damper 67 are provided. The stop unit 66 operates similarly to the stop unit 43 b of the first embodiment. The oil damper 67 limits the descent speed of the screen 68 to a predetermined speed or less.

In the lift-up curtain and the roll blind configured as described above, similarly to the first embodiment, by operating the ball chain 18 hanging down to the indoor side, the front fabric 2a can be raised and lowered. Can be. In addition, by operating the ball chain 18 hung on the outdoor side, the screen 68 of the mouth blind can be moved up and down. Therefore, the same operation and effect as in the first embodiment can be obtained except that the rear fabric 2b of the first embodiment is changed to a screen 68 of a roll blind.

(Third embodiment)

FIG. 26 shows a third embodiment. This embodiment shows another embodiment of the first and second clutch units 24a and 24b of the first and second embodiments. Configurations other than the clutch unit This is the same as the first or second embodiment.

The third shaft 71 is non-rotatably supported by the head box via a cap as in the above-described embodiment. The driving drum 72 is supported rotatably and immovably in the axial direction with respect to the third shaft 71, and similarly to the above-described embodiment, the driving gear and the driving gear shown in FIG. It is rotated via transmission gears 89 shown.

The transmission gear 89 is rotatably supported by the third shaft 71, and an engaging portion 90 is formed within a range of 60 ° with respect to the center. The engaging portion 72 a of the drive drum 72 shown in FIG. 26 is located on the same rotation locus as the engaging portion 90 of the transmission gear 89, and is formed within a range of 60 ° with respect to the center. ing.

Therefore, the transmission gear 89 and the drive drum 72 rotate together when the engaging portions 90 and 72a come into contact with each other, so that the transmission gear 8 9 and the drive drum 72 similarly to the first embodiment. An idling region having a predetermined angle exists between the driving drum 7 and the driving drum 72.

A clutch drum 73 is supported adjacent to the drive drum 72 so as to be rotatable with respect to the third shaft 71 and to be movable in the axial direction. As shown in FIG. 28, the guide drum 74 has a guide groove 74 formed symmetrically with respect to the center of the clutch drum 73, and the guide groove 74 includes an engagement groove 75 and a release groove 76. Are offset in the axial direction.

A slip panel 77 is provided between the driving drum 72 and the clutch drum 73. The clutch drum 73 is urged in a direction away from the drive drum 72, that is, in a direction indicated by an arrow E shown in FIG. 26, by the urging force of a slip panel 77 with the drive drum 72 as a fulcrum.

A collar 78 is non-rotatably fitted to the third shaft 71 adjacent to the clutch drum 73, and a stop spring 79 is wound around the outer periphery of the collar 78. Both ends 80 a and 80 b of the stop spring 79 are As shown in FIG. 7, the clutch drum 73 is bent in the radial direction, and the engaging portion 73 a of the clutch drum 73 projects between both ends 80 a and 80 b.

When the engaging portion 73 a comes into contact with one of the ends 80 a and 80 b of the stop spring 79, the friction between the stop spring 79 and the collar 78 increases, The rotation of the clutch drum 73 is prevented.

Around the clutch drum 73, a rotary drum 81 is supported so as to be rotatable and movable in the axial direction. The rotary drum 81 has an engagement recess 82 formed on the drive drum 72 side, and the engagement recess 82 engages with the engagement protrusion 83 formed on the drive drum 72. ing. Therefore, the rotating drum 81 is rotated integrally with the driving drum 72.

On the inner peripheral surface of the rotary drum 81, a hemispherical clutch convex portion 84 that engages with the guide groove 74 of the clutch drum 73 is formed. When the rotating drum 81 rotates, the clutch protrusion 84 is guided by the guide groove 74, and the rotating drum 81 moves in the axial direction.

On the inner peripheral surface of the rotating drum 81, an engaging portion 85 is formed which comes into contact with the ends 80 a and 80 b of the stop panel 79. When the engaging portion 85 engages with one of the ends 80a and 80b, the friction between the stop spring 79 and the collar 78 is reduced, and the stop spring 79 and the clutch drum are reduced. 7 3 is rotated integrally with the rotating drum 8 1.

A transmission drum 86 is rotatably supported at the distal end of the third shaft 71 so as to be immovable in the axial direction. A pair of saw-tooth-shaped driven locking teeth 87 are formed on the proximal end surface of the transmission drum 86, that is, the end surface facing the rotating drum 81.

A pair of sawtooth-shaped drive locking teeth 88 are formed on the end face of the rotating drum 81, that is, the end face facing the transmission drum 86. Then, when the rotating drum 81 is rotated and moves to the transmission drum 86 side, the driving locking teeth 88 Engages with the driven locking teeth 87, and the rotary drum 81 and the transmission drum 86 are rotated together.

Further, as shown in FIGS. 29 and 30, when the rotary drum 81 is moved to the drive drum 72 side, the engagement between the drive engagement tooth 88 and the driven engagement tooth 87 is released. Thus, the transmission drum 86 becomes freely rotatable.

The transmission drum 86 is connected so as to rotate integrally with a drive shaft similar to the drive shafts 9a and 9b of the first embodiment, for example. The rotation of the drive shaft is controlled by the same stopper unit as in the first embodiment.

In the double hoisting curtain having the clutch cut configured as described above, when the drive drum 72 is rotated in the pulling-up direction of the fabric by the operation of the ball chain, the rotation of the clutch drum 73 is performed. The rotating drum 81 is rotated while being stopped by the stop spring 79.

Then, the clutch convex portion 84 is guided into the engaging groove 75, and the rotating drum 81 moves toward the transmission drum 86, and the driving locking teeth 88 engage with the driven locking teeth 87. I do.

Then, the rotation of the driving drum 72 is transmitted to the transmission drum 86 via the rotating drum 81, and the cloth is pulled up based on the rotation of the transmission drum 86.

At this time, after the driving locking teeth 88 engage with the driven locking teeth 87, the engaging portion of the rotary drum 81 contacts the end 80a of the stop panel 79, so that the clutch is engaged. The drum 73 and the stop spring 19 are rotated integrally with the drive drum 72.

When the ball chain is released after the fabric is lifted to the desired position, the weight of the fabric is prevented from falling by the operation of the stopper unit. Pull the pole chain while the fabric is suspended at the desired position. By slightly operating the lifting unit in the same direction as the lifting unit and allowing the self-weight drop by the stopper unit, the rotating drum 81 is rotated in the fabric descending direction via the drive shaft and the transmission drum 86. .

Then, the rotating drum 81 is rotated while the rotation of the clutch drum 73 is stopped, and the rotating drum 81 is moved to the driving drum 72 based on the rotation. As a result, the engagement between the driving locking teeth 88 of the rotating drum 81 and the driven locking teeth 87 of the transmission drum 86 is released, and the transmission drum 86 becomes freely rotatable. Therefore, the fabric descends by its own weight.

To stop the lowering operation of the cloth, if the ball chain is further slightly pulled in the same direction, the driving drum 72 is rotated, and the rotating drum 81 is engaged with the transmission drum 86. Then, similarly to the first embodiment, the weight of the fabric is prevented from falling by the operation of the stopper unit.

By such an operation, the same effect as that of the first embodiment can be obtained in the raising curtain provided with the clutch unit of this embodiment.

In this embodiment, the pair of engaging portions 85 of the rotating drum 81 are engaged with the pair of guide grooves 74 of the clutch drum 73, so that the rotating drum 8

1 can be moved smoothly in the axial direction.

(Fourth embodiment)

FIG. 31 and FIG. 32 show a fourth embodiment. This embodiment is different from the known roll blind of the automatic winding type in which the screen of the roll blind of the second embodiment is wound up by the urging force of a torsion coil spring provided in a winding shaft. It was done. FIGS. 31 and 32 show the operating device.

A pulley 17 is rotatably supported in the operating device 101, and a ball chain 18 is mounted on the pulley 17. The pulley 17 is rotated based on the operation of the ball chain 18, and the drive gear 15 is rotated based on the rotation of the pulley 17. The rotation of the driving gear 15 is transmitted to the transmission gear 62a.

The lift-up curtain hung from the head box 1 has the same configuration as the front fabric 2a hung to the indoor side in the first embodiment. Then, based on the rotation of the transmission gear 62a, the first clutch unit and the first stopper unit operate to perform the same lifting operation as in the first embodiment.

The rotation of the drive gear 15 is transmitted to the transmission gear 62b via the counter gear 102. Therefore, the direction of rotation of the transmission gear 62b relative to the rotation of the drive gear 15 is opposite to that of the second embodiment.

Based on the rotation of the transmission gear 62b, the second clutch unit and the second stop unit disposed in the winding shaft of the louver blind operate, and the screen is raised and lowered.

The second clutch unit and the second stopper unit perform the same operation by rotating in the direction opposite to that of the second embodiment.

The operation of the raising curtain and the mouth blind based on the operation of the operating device 101 will be described.

When the drive gear 15 is rotated in the direction of arrow C by the operation of the ball chain 18, the transmission gear 62 a is rotated in the direction of arrow H. Then, the lift-up curtain is raised by the operation of the first clutch unit. At this time, the transmission gear 62 b is rotated in the direction of arrow E, but the roll blind is operated by the operation of the second clutch unit. Screen is not raised or lowered.

After the drive gear 15 is rotated in the direction of arrow C, the ball chain 18 is operated. When the operation stops, the operation of the first stopper unit prevents the lifter curtain from lowering its own weight.

In this state, when the drive gears 15 are slightly rotated in the direction of arrow C by operating the pole chains 1 and 8, the operation of the first stopper cut is released and the lift-up curtain lowers by its own weight. I do.

On the other hand, when the drive gear 15 is rotated in the direction of arrow F by the operation of the ball chain 18, the transmission gear 62 b is rotated in the direction of arrow G. Then, the operation of the second clutch cut lowers the screen of the roll blind.

At this time, the transmission gear 62 a is rotated in the direction of arrow D, but the lift-up curtain does not move up and down due to the operation of the first clutch.o

When the operation of the ball chain 18 is stopped after the drive gear 15 is rotated in the direction of arrow F, the screen of the roll blind is suspended at a desired position by the operation of the second stopper unit. Supported.

From this state, when the ball chain 18 is operated to slightly rotate the drive gear 15 in the direction of arrow F, the operation of the second stopper jet is released, and the screen of the roll blind is twisted. It is automatically wound up by the biasing force of the coil spring.

In the lift-up curtain and the roll blind configured as described above, similarly to the first embodiment, the lift-up curtain can be moved up and down by operating the ball chain 18 hanging down to the indoor side. The operation can be performed.

In addition, by operating the ball chain 18 hung on the outdoor side, the screen of the roll blind can be moved up and down.

Therefore, the roll blind of the second embodiment automatically controls the screen. The same operation and effect as in the second embodiment can be obtained, except that the configuration is changed to the configuration in which the pressure is raised to a lower value.

Further, the above embodiment can be modified as follows. The number of locking projections 40 of the transmission drum 27 may be only one. In addition, at least one convex portion 23 of the disk portion 22 may be provided. The first and second stopper units 43a and 43b are provided at any positions in the head box 1 as long as they can pass through the drive shafts 9a and 9b. You can. Further, in place of the raising curtain and the roll blind, the invention may be applied to an elevating device of a pleated curtain / horizontal blind. The guide groove 36 of the clutch drum 26 may be provided with a release groove 38 only on one of the engagement grooves 37.

As described in detail above, the present invention enables the double solar shading material to be independently lifted and lowered by one operation code, and operates either the raising operation or the lowering operation of each solar shading material. It is possible to provide an elevating device which can be automatically operated by a touch operation of a cord and which can easily raise and lower the solar shading material. Industrial applicability

The present invention is an elevating device that can be used for a solar shading device such as a horizontal blind, a tuck-up curtain, a green curtain, and a roll blind.

Claims

The scope of the claims

1. The first and second solar shading materials are suspended and supported from the head box, and the first and second solar shading materials are operated by operating one endless operation code hanging from the head box. In a solar shading material elevating device in which the first and second solar shading materials can be independently raised and lowered by operating a lifting and lowering operation unit, the first and second solar shading materials are prevented from falling by their own weight. And a first and second stopper unit, which can select between a state in which the weight falls and a state in which the weight is allowed to fall.

By operating one of the operation codes, the first lifting / lowering operation unit and the

-By operating the stop unit, it is possible to select the raising operation of the first solar shading material, the lowering operation by its own weight, and the self-weight lowering preventing operation without raising and lowering the second solar shading material. By operating the first clutch unit and the other of the operation codes, the second lifting / lowering operation unit and the second stopper unit are operated to raise and lower the first solar radiation shielding material. A second clutch unit that allows selection of an operation of raising the second solar shading material, a lowering operation by its own weight, and an operation of preventing its own weight descent. .

2. The first clutch unit is

A first rotary drum that is rotated based on the operation of the operation code, a first transmission drum that drives the first lifting / lowering operation unit,

A first clutch part for transmitting the rotation of the first rotary drum to the first transmission drum, The first clutch unit is capable of transmitting a rotational force of a first rotary drum based on an operation to one of the operation codes to the first transmission drum, based on a self-weight drop of the first solar radiation shielding material. When the first transmission drum is rotated by the first rotation drum, the transmission drum is separated from the first rotation drum to be freely rotatable,

The second clutch unit comprises:

A second rotary drum that is rotated based on the operation of the operation code, a second transmission drum that drives the second lifting / lowering operation unit,

A second clutch unit for transmitting the rotation of the second rotary drum to the second transmission drum;

The second clutch unit is capable of transmitting the rotational force of the second rotary drum based on the operation of the other of the operation codes to the second transmission drum, and reducing the weight of the second solar shading material. 2. The S-shielding material according to claim 1, wherein when the second transmission drum is rotated on the basis of the second transmission drum, the transmission drum is separated from the second rotary drum to be freely rotatable. lift device

3. The first and second solar shading materials are suspended and supported from the head box, and the first and second solar shading materials are operated by operating one endless operation code hanging from the head box. In the solar shading material lifting device in which the first and second solar shading members can be independently raised and lowered by operating the lifting and lowering operation part, a state in which the first solar shading material is prevented from falling by its own weight, A first stopper unit that allows the user to select a state in which self-weight descent is allowed; and

A second stopper unit capable of selecting between a state in which the second solar shading material is prevented from being automatically pulled up and a state in which the second solar shading material is allowed to be pulled up; By operating one of the operation codes, the first elevating / lowering operation unit and the first stopper unit are operated, and the first insolation is performed without elevating the second insolation shielding material. A first clutch unit capable of selecting a raising operation of the shielding material, a lowering operation by its own weight, and an operation of preventing its own weight descent,

By operating the other of the operation codes, the second elevating / lowering operation unit and the second stopper unit are operated, and the second insolation shielding material is not moved up and down without moving the first insolation shielding material. A solar shading material elevating / lowering device comprising: a second clutch unit which can select a descending operation, an automatic raising operation, and an automatic raising preventing operation.

4. The first and second clutch portions are

A clutch drum rotatably supported by the shaft,

A guide groove formed on the outer peripheral surface of the clutch drum;

A clutch ball moving along the guide groove,

The rotation of the clutch drum based on the rotation force acting from the clutch drum is prevented, and the first or second rotation drum and the clutch drum are prevented from rotating based on the rotation force acting from the first or second rotation drum. And a stop spring that rotates together.

The guide groove,

An engagement groove for transmitting the rotational force of the first or second rotary drum to the first or second transmission drum via a clutch ball;

3. The solar radiation shielding material lifting / lowering device according to claim 2, wherein the first or second transmission drum is constituted by a release groove which is freely rotatable with respect to the first or second rotating drum. .

5. The first and second clutch portions are

A clutch drum rotatably supported by the shaft,

A guide groove formed on the outer peripheral surface of the clutch drum;

A clutch protrusion formed on the first or second rotating drum and moving along the guide groove;

The rotation of the clutch drum based on the rotation force acting from the clutch drum is prevented, and the first or second drive drum is prevented from rotating based on the rotation force acting from the first or second transmission drum. A stop spring that rotates the clutch drum and the

The guide groove,

An engagement groove for moving the first or second transmission drum to a position where the first or second drive drum is engaged with the first or second drive drum;

3. The solar radiation shielding material raising and lowering according to claim 2, wherein the first or second transmission drum is constituted by a release groove which is freely rotatable with respect to the first or second driving drum. apparatus.

6. The torque transmitting means for transmitting a rotational force to the first and second rotary drums based on the operation of the operation code and the first and second rotary drums do not transmit torque to each other only at a predetermined angle. The solar radiation shielding material lifting / lowering device according to any one of claims 1 to 5, further comprising an idling region.

7. The method according to claim 1, wherein the first and second lifting / lowering operation units are configured to raise or lower either the curtain fabric of the lift-up curtain or the screen of the roll blind. The solar shading material lifting device according to any one of the above.