JP2000257358A - Slat driving device for vertical type blind - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slat driving device for a vertical type blind capable of easily meeting the width and height of various window surfaces, opening the window surface by winding up slats. SOLUTION: In the vertical type blind, in which a large number of slats 13 are suspended and supported rotatably from a winding member 2, the slats 13 can be rotated by turning a tilt shaft 15 and the slats 13 can be wound by revolving the winding member 2, an input shaft 8 rotated by an operating device 4, a driving gear 10 moved in the shaft direction while being turned on the basis of the revolution of the input shaft 8, a tilt gear 18 being engaged with the driving gear at a fixed position in the moving range of the driving gear 10 and turning the tilt shaft 15, and a wind-up device 22 revolving the winding member 2 on the basis of the rotation of the driving gear 10, turning the driving gear 10 not engaged with the tilt gear 18 at the fixed position in the shaft direction are installed to the winding member 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical blind which adjusts the amount of light collected by folding or rotating a slat suspended from a hanger rail.

[0002]

2. Description of the Related Art In a vertical blind, a large number of slats are movably supported on a hanger rail, and each slat is pulled out along the hanger rail by operating an operating means provided at one end of the hanger rail. It can be folded. Further, each slat is rotated by operating the operation means, so that the amount of collected light can be finely adjusted.

In such a vertical blind, in order to fold the slat, a space for folding the slat is required on both sides or one side of a window surface on which the vertical blind is installed.

[0004] As the number of slats suspended and supported by the hanger rail increases, a larger space is required, and the window cannot be opened sufficiently.
Not aesthetically pleasing.

Therefore, in the vertical blind described in Japanese Patent Publication No. 51-4357 or Japanese Patent Publication No. 3-17034, the slats are wound up to raise
There has been proposed a vertical blind in which a window surface can be opened without requiring a space for folding a slat on both sides of the window surface.

[0006]

[Problems to be Solved by the Invention] JP-B-51-4357
In the vertical blind described in the Japanese Patent Publication, when the handle hanging on one side of the frame is rotated while being pulled downward,
In this configuration, the slat is wound around a circular tube. Therefore, if the handle is rotated without being pulled downward surely, there is a problem that the suspension shaft of the slat is rotated in a state where the slat is partially wound up around the circular pipe, which causes a failure.

In the vertical blind disclosed in Japanese Patent Publication No. 3-17034, a screw shaft is movably disposed in a winding drum, and a slat is moved by moving a rack with the movement of the screw shaft. The slats can be wound on the winding drum by performing the turning operation of and rotating the winding drum with the movement of the screw shaft.

With such a configuration, it is difficult to secure a sufficient moving distance of the screw shaft in a vertical blind in which the width of the slats hanging down is narrow and the winding drum is short. In addition, the length of the slat is long, even in vertical blinds where the number of revolutions of the winding drum increases to wind up the slat from the lower limit to the upper limit,
It is difficult to secure a sufficient moving distance of the screw shaft.

Therefore, there is a problem that it is difficult to cope with a vertical blind installed on a narrow window surface or a vertical blind installed on a high window surface. SUMMARY OF THE INVENTION An object of the present invention is to provide a vertical blind slat drive device capable of easily coping with various widths and heights of a window surface while opening a window surface by winding up a slat.

[0010]

According to a first aspect of the present invention, a plurality of slats are rotatably suspended from a winding member, and are disposed in the winding member based on an operation of an operating device. In a vertical blind in which the slat can be rotated by rotating a tilt shaft and the slat can be wound by rotating the winding member, the winding member is rotated by the operating device. An input shaft, a drive gear that moves in the direction of the rotation axis while rotating based on the rotation of the input shaft, and the tilt shaft meshes with the drive gear at a predetermined position within the movement range of the drive gear. Rotating the winding member based on the rotation of the drive gear while rotating the tilt gear that rotates the drive gear and the drive gear that is not meshed with the tilt gear at a fixed position in the rotation axis direction. And a winding device for.

According to a second aspect of the present invention, a plurality of slats are rotatably suspended and supported from the winding member, and a tilt shaft provided in the winding member is rotated based on an operation of an operating device. In the vertical blind in which the slat is rotatable and the winding member is rotated to wind the slat, the winding member includes a rotation of an input shaft rotated by the operating device. A drive gear that rotates with the drive gear, an elevating gear that always meshes with the drive gear and moves with the drive gear in the direction of the rotation axis with the rotation, and a predetermined position within a movement range of the drive gear. A tilt gear that meshes with a drive gear to rotate the tilt shaft, wherein the lifting gear engages with the winding member after the slat is fully closed, and Rotating the take-up member by rotating integrally with the drive gear in a fixed position.

According to a third aspect of the present invention, the lifting gear is screwed to the feed screw shaft and is movable in the axial direction of the feed screw shaft with the rotation thereof. The lifting gear is released so as to be rotatable at a fixed position in the axial direction, and the lifting gear and the winding member are provided with engaging means for engaging with each other when the lifting gear rotates at the fixed position. An urging gear, which rotates integrally with the drive gear, and a winding member, which are integrally rotatable, and a biasing force for urging the winding member in a direction in which the lifting gear is screwed to the feed screw shaft. Means are provided, and the winding member is provided with a detent for rotating the lifting gear integrally with the driving gear at the fixed position when the screen is wound on the winding member.

According to a fourth aspect of the present invention, the detent protrudes into the inside of the winding member by a slat wound on the winding member, and engages with the lifting gear to resist the urging force of the urging means. Then, the lifting gear is rotated integrally with the driving gear at the fixed position.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. In the vertical blind shown in FIGS. 1 and 2, a pair of brackets 1 are fixed to a ceiling surface or the like above a window, and a hanger rail 2 is rotatably supported between the brackets 1 through support shafts 3a and 3b. ing.

A motor 4 is disposed on the one bracket 1, and a timing belt 6 is mounted between an output shaft of the motor 4 and a pulley 5 fixed to the support shaft 3a.

A gear box 7 is provided at one end of the hanger rail 2, and a hexagonal input shaft 8 is rotatably supported in the gear box 7. The base end of the input shaft 8 is fixed to the pulley 5. Therefore, when the pulley 5 is rotated via the timing belt 6 by the operation of the motor 4, the input shaft 8 is rotated.

The motor 4 is provided with a limiter 9 for stopping the operation of the motor 4 when the load acting on the motor 4 becomes excessive. The input shaft 8
, A drive gear 10 is fitted so as to be movable in the axial direction and rotatable integrally.

As shown in FIGS. 3 and 4, the hanger rail 2 is formed in a cylindrical shape with an open lower part, and a number of runners 11 are supported in the hanger rail 2 at equal intervals and immovably. ing. And each runner 11
The slats 13 are respectively suspended from the suspension hooks 12 rotatably supported by the slats.

At both ends of the hanger rail 2, fixed slats 13a are suspended and supported. The fixed slat 13a is suspended and supported in a direction along the longitudinal direction of the hanger rail 2, that is, in a fully closed state.

At the lower end of each of the slats 13, 13a,
A common weight bar 14 is suspended and supported via a suspension member. Each of the slats 13 is rotatable with respect to the weight bar 14.

Each runner 11 has a tilt shaft 1
5 is inserted. That is, as shown in FIG. 4, three recesses are formed on the outer peripheral surface of the tilt shaft 15, and the tilt shaft 15 is opposed to the center of the worm constituting the worm mechanism built in the runner 11. It is inserted so that it cannot rotate.

Therefore, when the tilt shaft 15 is rotated, the suspension hook 12 is rotated via the worm mechanism. One end of the tilt shaft 15 is connected to an end of a tilt drive shaft 16 rotatably supported by the gear box 7 via a connector 17. As shown in FIG. 3, the tilt drive shaft 16 is positioned obliquely above the input shaft 8 in the gear box 7, and a tilt gear 18 is fixed to an intermediate portion of the tilt drive shaft 16.

The diameter of the tilt gear 18 is such that it can mesh with the drive gear 10. When the drive gear 10 moves in the axial direction of the input shaft 8 and meshes with the tilt gear 18, the input shaft 8 The tilt drive shaft 16 is rotated with the rotation of the tilt drive shaft 16, and the tilt shaft 15 is rotated with the rotation of the tilt drive shaft 16.

A fixed shaft 19 is inserted into each of the runners 11 on the side of the tilt shaft 15.
One end of the fixed shaft 19 is fixed to an end of a feed screw shaft 20 fixed to the gear box 7, and the other end is fixed to the other end of the hanger rail 2. Each runner 11 is fixed to the fixed shaft 19 so as not to move in the axial direction.

The feed screw shaft 20 is located in the gear box 7 on the side of the tilt drive shaft 16 and obliquely above the input shaft 8, and is engraved at an intermediate portion thereof, and the drive gear An elevating gear 22 meshing with 10 is screwed.

As shown in FIG. 5, a flange portion 23 is formed on both sides of the lifting gear 22, and the flange portion 2 is formed.
Numeral 3 holds the drive gear 10 meshing with the lifting gear 22 from both sides so that the gears 10 and 22 always mesh.

Therefore, when the drive gear 10 is rotated together with the input shaft 8, the lift gear 22 moves in the axial direction of the feed screw shaft 20 while rotating, and the drive gear 10 moves together with the lift gear 22 on the input shaft 8. It is designed to move.

Coil springs 24 are provided at the ends of the feed screw shaft 20 where the screws 21 are not formed. When the lifting gear 22 moves on the feed screw shaft 20 and moves to the end of the screw 21,
The elevating gear 22 moves while compressing the coil spring 24, and the elevating gear 22 eventually idles with respect to the feed screw shaft 20.

One flange portion 23 of the lifting gear 22
A protrusion 25 is formed on the side surface of the gear box 7.
A projection 26 is formed on one inner surface of the projection 25 on the rotation locus of the projection 25. When the lifting gear 22 moves toward the protrusion 26 while compressing the coil spring 24, the lifting gear 22 eventually idles with respect to the feed screw shaft 20, and in this state, the protrusion 25 engages with the protrusion 26. Combine.

Then, since the rotation of the lifting gear 22 with respect to the feed screw shaft 20 and the gear box 7 is prevented, the rotation of the driving gear 10 causes the lifting gear 22 to rotate integrally with the driving gear 10. Therefore, in this state, the hanger rail 2 is rotated with the support shafts 3a and 3b as pivot points.

A detent 27 is attached to one end of the hanger rail 2. The detent 27 has a shank formed below the pot-shaped head, and a protrusion 2 is provided at an intermediate portion of the shank.
8 are formed. The tip of the shaft including the protrusion 28 is inserted into the hanger rail 2 and protrudes into the gear box 7.
Acts as a stop from the

A coil spring 29 is disposed between the head of the detent 27 and the outer peripheral surface of the hanger rail 2. The urging force of the coil spring 29 causes the detent 27 to project from the hanger rail 2. Is held in a state of contacting the inner peripheral surface. In this state, the leading end of the detent 27 is held so as not to reach the movement locus of the flange portion 23 of the lifting gear 22.

When the slat 13a is wound on the hanger rail 2, the slat 13a stops the detent 2a.
7 is pressed against the urging force of the coil spring 29, and the tip of the shaft of the detent 27 protrudes onto the movement locus of the lifting gear 22.

Next, the operation of the vertical blind configured as described above will be described. As shown in FIGS. 1 and 4 to 6, when the motor 4 is operated from the state where each slat 13 is rotated to the fully opened state and the input shaft 8 is rotated to one side, the driving gear 10 and the lifting gear 22 moves in the direction of arrow A.

Then, the drive gear 10 meshes with the tilt gear 18 and the tilt shaft 15 is rotated, so that the slat 1
3 is rotated. The driving gear 18 is the tilt gear 1
In the state where it has stopped meshing again after passing through FIG.
As shown in FIG. 9, the slat 13 is rotated by about 90 degrees, is in a direction along the hanger rail 2, and is in a fully closed state.

Next, when the input shaft 8 is further rotated in the same direction, the drive gear 10 further moves in the same direction, and FIG.
As shown in FIG. 12, the elevating gear 22 eventually idles with respect to the feed screw shaft 20 and the protrusion 2
5, 26 engage each other.

Then, the hanger rail 2 is rotated with the rotation of the input shaft 8, the slats 13 and 13a are wound on the hanger rail 2, and the weight bar 14 is pulled up.

When the slats 13 and 13a are completely wound on the hanger rail 2 and the weight bar 14 is pulled up to the vicinity of the hanger rail 2, the window surface is opened.

In this state, as shown in FIG. 12, the detent 27 is pressed by the slat 13a wound on the hanger rail 2, and its tip projects on the movement locus of the flange portion 23 of the lifting gear 22. Thus, the lifting gear 22 is prevented from moving in the direction of arrow B due to the urging force of the coil spring 24.

The slats 13, 13a are attached to the hanger rail 2.
The motor 4 is operated from the state where the
When the slat 13 a is wound on the hanger rail 2, the detent 27 is in contact with the flange 23 of the elevating gear 22. Movement is blocked and the lifting gear 2
After approximately one rotation of 2, protrusion 25 engages protrusion 26 from the opposite direction.

Then, the hanger rail 2 is rotated in the opposite direction with the rotation of the input shaft 8, and the slats 13, 13
a is unwound from the hanger rail 2. When the slats 13 and 13a are completely rewound, the detent 2
The tip of 7 moves backward with respect to the lifting gear 22 by the urging force of the coil spring 29.

Then, the lifting gear 22 is pressed in the direction of arrow B by the urging force of the coil spring 24 and meshes with the screw 21. Then, based on the rotation of the driving gear 10, the lifting gear 22 and the driving gear 10 move on the feed screw shaft 20 by the arrow B.
Move in the direction.

In this state, the drive gear 10 is
8 and further passes through the tilt gear 18, FIG.
And as shown in FIG. 4, each slat 13 is rotated to a fully open state.

With the vertical blind as described above, the following operational effects can be obtained. (1) By operating the motor 4, the slat 13
And the winding operation of the slats 13 and 13a on the hanger rail 2 can be performed.

(2) After rotating the slat 13 to the fully closed state, the motor 4 is further operated in the same direction, so that the slats 13 and 13a can be automatically wound on the hanger rail 2.

(3) When the motor 4 is operated in the reverse direction from the state in which the slats 13 and 13a have been wound on the hanger rail 2, the slats 13 and 13a can be unwound from the hanger rail 2.

(4) The gear box 7 for controlling the rotation operation of the slats 13 and the winding operation of the slats 13 and 13a can be stored in a small space on one side of the hanger rail 2.

(5) The hanger rail 2 is rotated while the elevating gear 22 idles around the feed screw shaft 20, and the slats 13 and 13a can be wound around the hanger rail 2, so that the height of the slats 13 and 13a is Regardless, the length of the feed screw shaft 20 is fixed, and the gear box 7 can be downsized.

(6) By appropriately setting the gear ratio between the drive gear 10 and the tilt gear 18, the slat 13 is moved from the fully open state to the fully closed state while the drive gear 10 is engaged with the tilt gear 18. It can be easily and surely rotated.

(7) Since the gear box 7 can be reduced in size, the gear box 7 can be easily housed in a hanger rail of a narrow vertical blind. The above embodiment can be modified as follows. -It is good also as a structure which rotates the input shaft 8 by manual operation.

[0051]

As described in detail above, the present invention makes it possible to open the window surface by winding up the slats, and to easily drive the slats of the vertical blinds which can easily cope with various widths and heights of the window surfaces. An apparatus can be provided.

[Brief description of the drawings]

FIG. 1 is a partially broken front view showing a vertical blind.

FIG. 2 is a plan view showing a configuration inside a hanger rail.

FIG. 3 is a side view showing gears in a gear box.

FIG. 4 is a side view showing a runner.

FIG. 5 is a plan view showing the operation of the gear box.

FIG. 6 is a front view showing the operation of the gear box.

FIG. 7 is a side view showing the operation of the slat.

FIG. 8 is a plan view showing the operation of the gear box.

FIG. 9 is a front view showing the operation of the gear box.

FIG. 10 is a side view showing a winding operation of the slat.

FIG. 11 is a plan view showing the operation of the gear box.

FIG. 12 is a front view showing the operation of the gear box.

[Explanation of symbols]

 2 Winding member (hanger rail) 4 Operating device (motor) 8 Input shaft 10 Drive gear 13 Slat 15 Tilt shaft 18 Tilt gear 22 Winding device (elevating gear) 25, 26 Winding device (projection)

Claims (4)

[Claims] A slat is provided by rotatably supporting a plurality of slats from a winding member and rotating a tilt shaft disposed in the winding member based on an operation of an operating device. A vertical blind capable of rotating the winding member and winding the slat by winding the slat, wherein the winding member includes: an input shaft rotated by the operating device; and the input shaft. A drive gear that rotates and moves in the direction of the rotation axis thereof based on the rotation of the tilt gear; a tilt gear that meshes with the drive gear at a predetermined position within a movement range of the drive gear to rotate the tilt shaft; A winding device that rotates the winding member based on the rotation of the drive gear while rotating the drive gear that is not meshed with the gear at a fixed position in the rotation axis direction. Vertical blind slat driving device according to claim and. 2. The slats according to claim 1, wherein a plurality of slats are rotatably suspended from the winding member, and a tilt shaft disposed in the winding member is rotated based on an operation of an operating device. In the vertical blind, in which the slat can be wound by rotating the winding member, the winding member is rotated with the input shaft rotated by the operating device. A rotating drive gear; an elevating gear that always meshes with the drive gear and moves with the drive gear in the direction of the rotation axis with the rotation; and at a predetermined position within the movement range of the drive gear, the drive gear A tilt gear that meshes and rotates the tilt shaft, wherein the lifting gear engages with the winding member after the slat is fully closed, and is fixed in the rotation axis direction. Vertical blind slat driving device characterized by rotating the take-up member by rotating integrally with the drive gear. 3. The lifting gear is screwed onto a feed screw shaft to be movable in the axial direction of the feed screw shaft with the rotation thereof, and one end of the feed screw shaft is screwed with the lifting gear at one end. Is released to allow the lifting gear to be rotatable in the axial direction at a fixed position, and the lifting gear and the winding member are provided with engaging means for engaging each other when the lifting gear rotates at the fixed position, The lifting gear rotating integrally with the drive gear and the winding member are rotatable integrally, and the winding member is provided with biasing means for biasing the lifting gear in a direction in which the lifting gear is screwed to the feed screw shaft. Wherein the winding member is provided with a detent for rotating the lifting gear integrally with the driving gear at the fixed position when the screen is wound on the winding member. Item 2. Slat driving device for vertical blinds according to item 2. . 4. The detent protrudes inside the winding member by a slat wound on the winding member,
The slat of a vertical blind according to claim 3, wherein the lifting gear is engaged with the lifting gear to rotate the lifting gear integrally with the driving gear at the fixed position against the urging force of the urging means. Drive.