JP3529681B2 - Shielding material elevating device for solar shading device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting device such as a tuck-up curtain, a pleated curtain, or a horizontal blind.

[0002]

2. Description of the Related Art Conventionally, an operation case is provided on one side of a head box as one type of lifting and lowering device for a comb curtain, and a curtain material is lifted and lowered from a pulley rotatably supported in the operation case. There is a hanging endless ball chain of.

In such a tuck-up curtain, when the ball chain is operated in the pulling direction of the curtain material,
Based on the rotation of the pulley, the lifting cord winding shaft is rotated in the head box, the lifting cord is pulled up, and the curtain material is pulled up.

After pulling up the curtain material to a desired position, when the ball chain is locked to the hooking portion of the operation case, the rotation of the pulley is prevented, the curtain material is prevented from dropping by its own weight, and the curtain material is hung at the desired position. Supported.

When lowering the curtain cloth, if the ball chain is detached from the hooking part and then released, the pulley can be freely rotated. Goes down.

At this time, since the pulley on which the ball chain is hooked and the lifting cord winding shaft are always directly connected, when the screen descends by its own weight, the pulley rotates and the ball chain moves.

[0007]

In the above-mentioned tuck-up curtain, it is necessary to put a hand on the ball chain to restrain the moving speed of the curtain cloth when lowering the curtain cloth. , The weight bar vigorously descends and collides with the floor surface, or the ball chain connector vigorously collides with the operation case,
There is a problem that the connector is damaged.

An object of the present invention is to provide a solar shading device capable of raising and lowering a solar shading member by rotating a pulley which is always interlocked with a drive shaft for vertically driving the solar shading member. It is an object of the present invention to provide a shielding material lifting device capable of braking below a speed.

[0009]

According to a first aspect of the present invention, a solar shading member is suspended from a head box, a drive shaft is rotatably supported in the head box, and the suspension is suspended from the drive shaft. The lower end of the lifting cord is attached to the solar shading member, and the solar shading member can be moved up and down by operating an operating device , and in the solar shading device capable of lowering the solar shading member by its own weight, The solar shading
The rotation speed of the drive shaft should be
Install a rotary damper that limits the speed to below a specified speed.
When the drive shaft rotates, the rotary damper
In the direction of rotation of the drive shaft
The absorption means for absorbing the shake of the axial center of the
Absorbing means, the case of the rotary damper,
When fixed in the axial direction of the drive shaft with respect to the head box
In both cases, it is possible to move within a predetermined range except in the axial direction.
It was

According to a second aspect of the present invention, the drive shaft is a rotary
It pierced through the center of the damper.

[0011]

[0012]

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION (First Embodiment) An embodiment of the present invention will be described below with reference to the drawings. In the tuck-up curtain shown in FIG. 1, a curtain material 2 is suspended and supported from a head box 1, and a weight bar 3 is attached to a lower end portion of the curtain material 2.

A plurality of elevating cords 4 are suspended and supported from the head box 1 at equal intervals, and a lower end portion of the elevating cords 4 is hooked on a lower portion of the curtain material 2.
The upper end of each of the lifting cords 4 has the head box 1
The lifting cord winding shaft 5 is wound around the lifting cord winding shaft 5, and the driving shaft 6 is inserted into the lifting cord winding shaft 5.

An operating device 7 is attached to one end of the head box 1, and one end of the drive shaft 6 is fitted to the output shaft of the operating device 7. A pulley is rotatably supported on the operating device 7, and an endless ball chain 8 is hung on the pulley. The ball chain 8 is connected by a connector 9 and is formed in an endless shape.

When the ball chain 8 is operated in the pulling direction of the curtain material 2, the drive shaft 6 is rotated via the pulley, and the lifting cord winding shaft 5 is rotated based on the rotation of the drive shaft 6. Then, the elevating cord 4 is wound around the elevating cord winding shaft 5, and the curtain material 2 is pulled up.

A hooking portion for hooking the ball chain 8 is formed on the case of the operating device 7. By hanging the ball chain 8 on the hooking portion, the weight of the curtain material 2 is lowered. It is supposed to be prevented.

If the ball chain 8 is released without being hooked on the hooking portion, the curtain material 2 is lowered by its own weight, and the pulley is rotated with the rotation of the drive shaft 6 so that the ball chain 8 moves. Has become.

A rotary damper 10 is arranged at the other end of the head box 1. As shown in FIG. 2, one end of a connector 11 is loosely fitted to the other end of the drive shaft 6, and is fixed by a set screw so as not to move in the axial direction. The input shaft 12 of the rotary damper 10 is loosely fitted to the other end of the connector 11, and is fixed so as not to move in the axial direction by a set screw and a cap 13 fitted to the end of the head box 1. ing.

The case of the rotary damper 10 is fixed in the head box 1, and the connecting tool 11 operates so as to absorb the deviation of the shaft center when the drive shaft 6 rotates. With the comb-up curtain configured as described above, the following operational effects can be obtained.

(1) The ball chain 8 is attached to the curtain material 2
The curtain material 2 can be pulled up by operating in the pulling up direction. (2) With the curtain material 2 pulled up to the desired position,
When the ball chain 8 is hooked on the hooking portion of the operating device 7, the curtain material 2 can be suspended and supported at a desired height.

(3) If the ball chain 8 is released without being hooked to the hooking portion, the curtain material 2 can be lowered by its own weight. (4) When the curtain material 2 is lowered, the rotation speed of the drive shaft 6 can be suppressed to a predetermined value or less by the action of the rotary damper 10, so that the curtain material 2 is suddenly dropped, the weight bar 3 and the floor surface. Collision with connector 9
It is possible to prevent damage to the connector 9 due to a collision between the connector 9 and the case of the operating device.

(5) Input shaft 1 of rotary damper 10
Since 2 is connected to the drive shaft 6 via the connecting tool 11, the connecting tool 11 absorbs the deviation of the axis of the drive shaft 6 when the drive shaft 6 rotates, and the input of the rotary damper 10 is absorbed. It is possible to suppress the action of force other than the rotational force on the shaft 12. Therefore, oil leakage and the like due to deterioration of the bearing portion of the input shaft 12 of the rotary damper 10 can be prevented in advance, and the durability of the rotary damper 10 can be improved. (Second Embodiment) This embodiment shows a combing curtain in which the configuration of the operating device 7 of the first embodiment is changed.

As shown in FIG. 3, a pulley 22 is rotatably supported on the case 22 of the operating device 21, and the ball chain 8 is mounted on the pulley 23. An output shaft 24 that projects toward the inside of the head box 1 is integrally formed at the center of the pulley 23.
The drive shaft 6 is fitted on the tip of the drive shaft 4. Therefore, when the pulley 23 is rotated, the drive shaft 6 is rotated.

As shown in FIG. 4, the case 22 includes:
A fitting insertion portion 25 having a substantially rectangular tube shape is formed, and the fitting insertion portion 25 is fitted and inserted into an end portion of the head box 1. A stopper 26, which operates as a device for preventing the curtain fabric 2 from falling by its own weight, is fitted in the fitting portion 25. The case 27 of the stopper 26 is formed in a substantially cylindrical shape, and convex portions 28 are formed on the outer peripheral surface thereof at positions facing each other with the center therebetween.

A stopper 26 is provided on the inner surface of the fitting portion 25.
A curved surface is formed along the outer peripheral surface of the case 27 of FIG.
On the inner surfaces of the four corners of No. 5, the protrusions 28 of the case 27 are provided.
A concave portion 29 is formed to position so that it cannot rotate.

Therefore, the stopper 26 is fitted with the fitting insertion portion 25 in a state in which the projection 28 is engaged with the recess 29 in the fitting insertion portion 25.
It is non-rotatably supported inside. It is also possible to insert the stopper 26 into the fitting insertion portion 25 by changing the front-back direction thereof.

A drum 30 is rotatably supported in a case 27 of the stopper 26, and the output shaft 24 is fitted in the center of the drum 30 so as not to be relatively rotatable. A plurality of split grooves are formed at the tip of the output shaft 24, and a spring piece 31 is formed between the split grooves.

A barb 32 is formed at the tip of the spring piece 31, and the stopper 26 fitted into the output shaft 24 is prevented from coming off the output shaft 24 by the barb 32. In addition, if the spring piece 31 is bent, the stopper 26 is moved to the output shaft 2.
It is removable from 4.

A guide groove 33 having a semicircular cross section is formed on the outer peripheral surface of the drum 30 , and the slide groove 34 also has a semicircular cross section on the inner peripheral surface of the case 27.
Is formed in the central axis direction of the stopper 26.

A clutch ball 35 made of a steel ball is arranged between the guide groove 33 and the slide groove 34. Therefore, when the drum 30 is rotated, the clutch ball 35 moves along the slide groove 34 while relatively rotating on the outer peripheral surface of the drum 30 along the guide groove 33.

The structure of the guide groove 33 will be described with reference to the development view shown in FIG. In FIG. 5, when the drum 30 is rotated in the pulling direction of the curtain material 2, the clutch ball 35 relatively moves on the guide groove 33 in the arrow A direction.
Further, when the drum 30 is rotated in the pulling down direction of the curtain material 2, the clutch ball 35 relatively moves on the guide groove 33 in the arrow B direction.

A pull-down groove 36 is formed on one side of the outer peripheral surface of the drum 30, and a pull-up groove 37 is formed on the other side.
A first return groove 38 that branches in the direction of arrow A communicates with the pull-down groove 36, and the first return groove 38 is the pull-up groove 3.
7 merges in the direction of arrow A.

A stop groove 39 branching in the direction of arrow B communicates with the pull-up groove 37, and the stop groove 39 becomes a dead end in the direction of arrow B at an engaging portion 40, which is in the direction of arrow A. Via the second return groove 41 extending to
It merges with the pull-down groove 36.

In the stopper 26 thus constructed,
When pulling up the curtain material 2, the clutch ball 35 moves in the pulling groove 37 in the direction of arrow A. When the ball chain 8 is released after pulling up the curtain material 2 to a desired position, the lifting cord 4 is rewound due to the weight of the curtain material 2, and the drum 30 is rotated via the drive shaft 6 and the output shaft 24. When the clutch ball 35 moves in the pull-up groove 36 in the direction of the arrow B, the clutch ball 35
Engages with the locking portion 40 to prevent further rotation of the drum 30 in the same direction. Therefore, in this state, the curtain fabric 2 is prevented from falling by its own weight.

From this state, when the curtain material 2 is descended, the ball chain 8 is operated to slightly pull up the curtain material 2, so that the clutch ball 35 is moved from the engaging portion 40 to the second return groove. It is guided into the pull-down groove 36 via 41. Then, the clutch ball 35 will move into the pull-down groove 3
Since it is possible to orbit the inside of 6, the descent operation by the weight of the curtain material 2 becomes possible.

When the curtain material 2 is further pulled up from the state where the clutch ball 35 is engaged with the engaging portion 40, the clutch ball can be operated by operating the ball chain 8 in the pulling direction of the curtain material 2. 35 is a locking portion 40
Through the second return groove 41 into the pull-down groove 36, and further through the first return groove 38 into the pull-up groove 37. Therefore, the curtain fabric 2 can be pulled up by the ball chain 8.

The drive shaft 6 has the same lifting cord winding shaft 5 and rotary damper 1 as in the first embodiment.
0 is attached. With the comb-up curtain configured as described above, the following operational effects can be obtained.

(1) The ball chain 8 and the curtain material 2
The curtain material 2 can be pulled up by operating in the pulling up direction. (2) With the curtain material 2 pulled up to the desired position,
When the ball chain 8 is released, the curtain fabric 2 is prevented from falling by its own weight, and the curtain fabric 2 can be suspended and supported at a desired height.

(3) If the ball cloth 8 is slightly pulled in the direction in which the curtain material is pulled up from the state in which the descent of the curtain material 2 is prevented, the curtain material 2 is released.
Can be lowered by its own weight.

(4) When the curtain material 2 is lowered by its own weight, the rotational speed of the drive shaft 6 can be suppressed to a predetermined value or less by the action of the rotary damper 10, so that the curtain material 2 suddenly drops and the weight is reduced. It is possible to prevent damage to the connector 9 due to a collision between the bar 3 and the floor surface and a collision between the connector 9 and the case of the operating device.

Particularly in this embodiment, the curtain material 2
When the curtain material 2 is automatically lowered to its lowermost limit when the weight is lowered by its own weight, even if the weight bar 3 comes into contact with the floor surface when the curtain material 2 is lowered to the lowermost limit, the rotary damper 10 acts by The weight bar 3 can be slowly lowered to prevent the weight bar 3 from colliding with the floor surface. (Third Embodiment) In this embodiment, the connection between the rotary damper 10 and the drive shaft 6 is changed,
Other configurations are the same as those in the first embodiment.

As shown in FIG. 6, at the end of the head box 1, a drive shaft 6 is passed through a rotary damper 10 which is non-rotatably supported by the head box 1, and the drive shaft 6 is rotated by the rotary damper 10. The braking force is applied.

The tuck-up curtain constructed as described above has the following features (1) to (1) obtained in the first embodiment.
In addition to the function and effect of (4), the following function and effect can be obtained.

(1) When the rotary damper 10 which can penetrate the drive shaft 6 is used, the rotary damper 10
Since it is possible to reduce the influence of shaft deviation due to the twisting of the drive shaft 6 on the input shaft of the above, it is possible to prevent oil leakage due to deterioration of the bearing portion of the input shaft 12 of the rotary damper 10. The durability of the rotary damper 10 can be improved.

(2) The drive shaft 6 is attached to the rotary damper 10.
Since it can be penetrated, the rotary damper 1 is provided between the end of the drive shaft 6 and the cap of the head box 1.
There is no need to secure a space for storing 0. Therefore, the installation space of the rotary damper 10 can be saved. (Fourth Embodiment) This embodiment shows a modification of the rotary damper 10 of the third embodiment.

As shown in FIG. 7, the rotary damper 1
A drive gear 43 is rotatably supported in the case 0 of 0, and the drive shaft 6 is penetrated through the drive gear 43 so as not to be relatively rotatable.

Therefore, when the drive shaft 6 is rotated, the drive gear 43 is rotated. The case 42
A driven gear 44 that meshes with the drive gear 43 is rotatably supported therein, and an input shaft 46 of a damper portion 45 arranged outside the case 42 is fitted to the center of the driven gear 44. ing.

Therefore, by the operation of the damper portion 45, the rotational speed of the drive shaft 6 is braked below a predetermined speed. With the comb-up curtain configured as described above, in addition to the function and effect obtained in the third embodiment, the following function and effect can be obtained.

(1) Since the drive shaft 6 is not passed through the damper portion 45, the diameter of the input shaft 46 of the damper portion 45 can be reduced. That is, in the damper portion 45 formed of an oil damper, the braking force increases as the rotation speed of the input shaft 46 increases, and the minimum resistance thereof decreases as the shaft diameter decreases. Therefore, when the curtain material descends to the vicinity of the lower limit and its descending speed decreases, the minimum resistance of the damper portion 45 is small, and therefore the curtain material can be reliably lowered to the lower limit based on its own weight.

(2) By adjusting the gear ratio of the drive gear 43 and the driven gear 44, the minimum resistance of the damper portion 45 can be adjusted. The above embodiment can be modified as shown below. As shown in FIG. 8, the case of the rotary damper 10 with respect to the head box 1 is made immovable only in the axial direction of the drive shaft 6, and is slightly rotatable in the rotational direction of the drive shaft 6 or in the vertical and horizontal directions. Then, the rotary damper 10
It is possible to improve the durability of the rotary damper 10 by reducing the influence of the axial deviation of the drive shaft 6 due to the twist of the drive shaft 6 and the like. As shown in FIG. 9, the case of the rotary damper 10 is immovable with respect to the head box 1 only in the axial direction of the drive shaft 6, and is slightly rotatable in the rotational direction of the drive shaft 6 or in the vertical and horizontal directions. Then, the rotary damper 10
It is possible to improve the durability of the rotary damper 10 by reducing the influence of the axial deviation of the drive shaft 6 due to the twist of the drive shaft 6 and the like. The drive shaft 6 may be loosely fitted to the input shaft 12 of the rotary damper 10 so as to reduce the influence of the shaft center deviation. -In place of the rotary damper 10, a centrifugal governor, a windmill or the like may be used as a damper. The mounting structure of the rotary damper 10 as described above is
It can be applied to pleated curtains, horizontal blinds, etc. as well as tuck-up curtains.

[0052]

As described above in detail, according to the present invention, in the solar shading device in which the solar shading member can be moved up and down by rotating the pulley that is always interlocked with the drive shaft for driving the solar shading member up and down. It is possible to provide a shield elevating / lowering device that can brake the rotation speed of the shaft to a predetermined speed or less.

[Brief description of drawings]

FIG. 1 is a front view showing a tuck-up curtain.

FIG. 2 is an exploded view showing a mounting portion of a rotary damper.

FIG. 3 is a cross-sectional view showing a second embodiment of the operating device.

FIG. 4 is an exploded perspective view of the operating device.

FIG. 5 is a development view showing a guide groove.

FIG. 6 is a front view showing a third embodiment.

FIG. 7 is a cross-sectional view showing a fourth embodiment.

FIG. 8 is a sectional view showing another example.

FIG. 9 is a cross-sectional view showing another example.

[Explanation of symbols]

1 head box 2 Solar shading material (curtain material) 4 lifting code 6 drive shaft 7 Operating device 10 Braking device (rotary damper) 11 Absorption means (connector)

Claims (2)

(57) [Claims] 1. A solar shading member is suspended from a head box, a drive shaft is rotatably supported in the head box, and a lower end portion of an elevating cord suspended from the drive shaft is shielded from the solar radiation. In a solar shading device that is attached to a material and is capable of moving up and down the solar shading material by operating an operating device , and lowering the solar shading material by its own weight, the solar shading material rotates when the solar shading material moves up and down. The drive shaft has the drive
A rotary damper that limits the rotation speed of the shaft to below a specified speed.
The rotary shaft is installed in the rotary damper.
Direction of rotation of the drive shaft when rotating
Absorbing means that absorbs the shake of the shaft center that rotates slightly in the direction
The absorbing means is a case of the rotary damper.
Is fixed to the head box in the axial direction of the drive shaft.
In addition to being fixed, it is possible to move within a predetermined range except in the axial direction
Shielding and lifting equipment for solar radiation shielding device
Place 2. The drive shaft is the center of a rotary damper
The solar radiation shield according to claim 1, characterized in that the portion is penetrated.
Shielding device lifting device for shielding device.