JPH0211593Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Technical field of the invention This invention is applicable to blinds, curtains,
The present invention relates to a screen for an inclined window, in which various screens such as a projection screen are used by contracting or expanding them.

(b) Background of the invention Normally, when a corresponding slanted screen is attached to a slanted window that is slanted in various shapes, there is no means for fixing the screen to its stopping position after the screen is opened or closed. Therefore, the screen naturally slides down in the direction of its inclination due to its own weight.

Therefore, at present, screens must be installed on slanted windows without tilting them, which means that the equipment for slanted windows is large-scale, requiring a large screen installation space and requiring extra screen length. It was not only uneconomical, but also unsightly, making it impossible to install screens that matched the sloped windows.

(c) Purpose of the invention Therefore, the object of this invention is to provide a screen for an inclined window in which the screen does not slide down in the direction of inclination when opening/closing is stopped, even if the screen has an inclined shape corresponding to the inclined window.

(d) Summary of the invention This invention has a self-locking mechanism that transmits the output from the drive pulley that opens and closes the screen and locks the output from the hanging cord due to the screen's own weight. This is a screen for an inclined window, which is equipped on the rotating shaft of the screen, thereby ensuring a stopping operation in the screen inclination direction. (E)
Effects of the invention According to this invention, the output rotation shaft for opening and closing the screen is equipped with a self-locking mechanism that restricts each counter-rotation direction corresponding to the forward and reverse rotation of the shaft, so the rotation shaft is stopped. At the same time, this self-lock mechanism operates to restrict the rotation of the rotation shaft, so that the screen is automatically stopped at the stop position where the screen is opened or closed.

Therefore, since the screen can be installed on a sloped screen that matches the sloped shape of the sloped window, the screen does not take up any extra installation space for the sloped window, and is suitable for sloped windows with excellent aesthetic appearance. It becomes a screen.

Note that the self-locking mechanism has a simple structure in which locking and unlocking functions for the rotating shaft can be obtained by simply incorporating a coiled spring, so that the number of structural members is small and it is economical.

(F) Embodiment of the invention An embodiment of the invention will be described below in detail based on the drawings.

The drawing shows a vertical blind that provides sun protection and light protection as an example of a screen for an inclined window. In FIG. It is composed of a large number of vertical slats 4 arranged along the upper slope line 3 of the window 2 to block light, and an opening/closing device 5 for opening and closing these slats 4.

As shown in FIG. 2, the above-mentioned opening/closing device 5 is provided between a driving pulley 6 disposed at the upper part of the upper side of the upper inclined line 3 of the inclined window 2 and a driven pulley 7 arranged at the upper part of the lower side. A hanging cord 8 is stretched to suspend each of the slats 4. This hanging cord 8 is moved along the upper inclined line 3 by a drive pulley 6 on the higher side, and is set to collect all the slats 4 on the higher side.

Reference numeral 9 is a locking tool for the accumulation, and 10 is a stopper for accumulation.

A motor 12 is connected to the drive pulley 6 via a deceleration mechanism 11, and is driven in forward and reverse directions. Furthermore, this drive pulley 6 is rotated.

The rotation shaft 13 is equipped with a self-lock mechanism 14 for regulating rotation of the rotation shaft 13.

The above-mentioned self-locking mechanism 14 includes the slats 4...
The slats 4 can be placed in the open position where the slats 4 are accumulated on the higher side and the slanted window 2 is opened, and the closed position where the slats 4 are expanded and the slanted window 2 is closed, or at any arbitrary position in between.
In order to prevent the slats 4 from slipping down at each stop position when the slats 4 are stopped, the fixed ring is equipped with a self-locking function that automatically locks in response to the weight of the slats 4. 15, the locking spring 16, the first rotation shaft 13a and the second
It is composed of a rotation shaft 13b.

The above-mentioned fixed ring 15 is fixedly fitted into a fixed case 17 that is fixedly supported on a wall surface, and a locking spring 16, which will be described later, is fitted onto the inner peripheral surface of this fixed ring 15.

The above-mentioned locking spring 16 is formed into a coil shape, and the outer peripheral surface of this spring 16 is connected to the above-mentioned fixing ring 15.
The spring 16 is fitted in sliding contact with the inner circumferential surface of the spring 16, and protrusions 18, 18 are provided at both ends of the spring 16 to protrude inward and radially opposite to each other. It is in a state of being integrated with the fixed ring 15 due to the biasing force in the direction of diameter expansion.

A slight gap is formed on the inner circumference of the spring 16 between the outer circumferential surfaces of the shaft portions of the first rotating shaft 13a and the second rotating shaft 13b and the inner circumferential surface of the spring 16. These first and second rotation shafts 13
The shaft portions of a and 13b are fitted into the spring 16.

The first rotating shaft 13a described above is connected to the speed reduction mechanism 11 via the motor 12 at the front end of the shaft, and has an arcuate half-moon shaft portion 19 protruding in the axial direction at the rear end of the shaft. , this half-moon shaft portion 19 is inserted into the above-described spring 16 from its one end surface side.

The second rotation shaft 13b has a drive pulley 6 fitted on the rear side of the shaft, and is coaxially aligned with the above-mentioned arc-shaped half-moon shaft portion 19 in the axial direction at the front end of the shaft. Half-moon shaft portion 20 with a half-moon shape in cross section
is provided in a protruding manner, and this half-moon shaft portion 20 is inserted from the other end surface side of the spring 16 in correspondence with the other half-moon shaft portion 19 .

Furthermore, on the inner circumferential surface of the spring 16, between the opposing surfaces of the half-moon shaft portions 19 and 20 inserted into each other from both sides, the spring 16 is provided on both sides of the plane facing each other in the radial direction.
Both protrusions 18, 18 are interposed therebetween, and they are opposed to each other with an allowance space 21 that allows initial rotation of these protrusions 18, 18 in the circumferential direction.

In this case, even if the first rotation shaft 13a rotates in either the forward or reverse direction, the first rotation shaft 13a initially rotates in the direction of loosening the spring 16 via the protrusion 18 on one side or the other side. The half-moon shaft portion 19 of the first rotation shaft 13a is inserted into one side of the corresponding spring 16.
On the other hand, the second rotation shaft 13 facing the opposite side
The half-moon shaft portion 20 of b is inserted into the other side of the spring 16 set in the direction in which the spring 16 is tightened via the protrusion 18 in both forward and reverse directions.

Also, the gap was set between the outer circumferential surface of the semicircular shaft portions 19, 20 and the inner circumferential surface of the spring 16 by reducing the diameter of the spring 16 by the lock release operation described later and releasing the fixing action of the spring. This is to allow the inner and outer circumferential surfaces of the spring 16 to uniformly restrict diameter reduction in the circumferential direction without causing uneven contact.

22 is a spring storage cylinder built into the fixed ring, 23
is the spring retaining plate.

FIG. 3 shows a lock-off state in which rotation of the drive pulley 6 is allowed, and this means that the first rotation shaft 13a via the motor 12 rotates in the normal clockwise direction, which causes the drive pulley 6 to rotate. Then, Slut 4...
The lock release operation at this time is based on the forward rotation output from the motor 12, when the half-moon shaft portion 19 on the front side is moved within the allowable space 21, and the protrusion 18 on one side is moved. Spring 1 through
6 in the direction in which it should be loosened to unlock the spring 16 fixed to the fixed ring 15.
Rotation with respect to the semicircular shaft portion 20 on the rear stage side is allowed, and power is transmitted to the drive pulley 6 side.

FIG. 4 shows a lock-on state in which the rotation of the drive pulley 6 is restricted, and this locks on the slats 4 to stop them at that position when they are moved to a predetermined position. When the forward rotation (clockwise direction) of the first rotating shaft 13a via this motor 12 is stopped, the drive pulley 6
rotation is stopped, but at this time, a counterclockwise rotational force acts on the drive pulley 6 to further rotate it due to the weight of the slat 4, and in response to this acting force, the half-moon shaft on the rear side 20 tries to rotate, but at the initial stage of rotation of the semicircular shaft portion 20, the spring 16 is rotated in the diametrically expanding direction via the protrusion 18 on one side. It is integrally fixed to the fixed ring 15 to restrict rotation of the rear half-moon shaft portion 20. Therefore, a self-locking operation is automatically performed by the reaction force of the rear half-moon shaft portion 20 corresponding to the load on the slats 4, and the counterclockwise rotation of the drive pulley 6 is naturally locked.

As a result, the slats 4 are automatically self-locked at each of the stop positions of the whole or part of the slats in the inclination direction based on the output stop operation of the motor 12, including the accumulation stop position and the expansion stop position.

Further, since the above-described self-locking mechanism 14 is provided symmetrically with respect to the circumferential direction, the motor 12
Similar locking and unlocking operations are performed when the lock is reversed. In addition, the locking spring 16
The locking and unlocking operations are performed by the sliding action of the outer peripheral surface of the spring, which expands and contracts.
The linear cross section of the spring is suitably rectangular, such as a rectangular cross section, so that the sliding resistance is sufficiently large.

In the figure, 24 is a bearing for a rotating shaft, and this bearing 24, the above-mentioned motor 12, deceleration mechanism 11, and driven pulley 17 are fixedly held or supported on a wall as appropriate.

In the vertical blind constructed in this way, by rotating the motor 12 in the forward or reverse direction, the drive pulley 6 is rotated via the rotating shaft 13 that is interlocked with the motor 12, and the hanging cord 8 is moved at an incline. 4
Move... to the specified position.

Then, based on stopping the rotation of the motor 12 at a predetermined position, the self-locking mechanism 14 is activated and the slats 4 are automatically stopped at this predetermined position, similar to a normal non-tilting window. The opening/closing operation of the inclined window 2 is completed by the simple opening/closing operation.

(G) Other examples FIGS. 5 and 6 show other embodiments of this invention, and FIG. 5 shows a case of a vertical blind 31 for an inclined window that conforms to a parallelogram-shaped inclined window 32. ,
FIG. 6 shows a manual drive means in which a manual pulley 42 is disposed in place of a motor as the drive source of the blind, and power is transmitted to a drive pulley 46 by operating a control string 41 passed through the pulley in the forward and reverse directions. Even with such means, the same effects as in the above-mentioned embodiment can be obtained.

In addition, in the above-mentioned Example, although the blind was arrange|positioned with respect to an inclined window, it is not limited to this and a curtain etc. may be sufficient.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, with Fig. 1 being a front view showing the upright blind in use, Fig. 2 being a vertical cross-sectional view of the main part showing the opening/closing device of the blind, and Figs. 3 and 4. A in Figure 2 shows the operating condition of the self-locking mechanism installed in the opening/closing device.
-A enlarged sectional view, FIGS. 5 and 6 show other embodiments of this invention, FIG. 5 is a front view showing a parallelogram vertical blind in use, and FIG. 6 is a manual type blind. FIG. 2 is a vertical cross-sectional view of a main part of the blind opening/closing device. 1,31...vertical blind, 2,32...
Inclined window, 3... Upper inclined line, 5... Opening/closing device, 6, 46... Drive pulley, 7... Driven pulley, 8... Hanging cord, 13... Rotating shaft, 14...
Self-locking mechanism, 15... Fixed ring, 16... Locking spring, 19, 20... Half-moon shaft portion, 21...
Allowable space.

Claims (1)

[Claims for Utility Model Registration] A screen for an inclined window that moves along the direction of inclination of the inclined windows 2 and 32, wherein the hanging cord 8 for suspending the screen is connected to the higher side of the upper inclined line 3 of the inclined window. It is stretched between the driving pulleys 6, 46 held on the lower side and the driven pulley 7 held on the lower side, and the rotating shaft 13 on the driving pulley side is provided with a fixed ring 15 coaxial with this rotating shaft. The locking spring 16 is installed on the inner peripheral surface of this fixed ring.
A coil-shaped locking spring is fitted with the outer circumference of the locking spring in sliding contact with the locking spring, and both ends of the locking spring are provided to protrude inward in the radial direction, and the driving pulley is attached to the inner periphery of the locking spring. This rotating shaft is fitted with a slight gap formed between the outer circumferential surface of the rotating shaft and the inner circumferential surface of the spring, and the fitting part of the rotating shaft has a semicircular cross section in the axial direction. The half-moon shaft part 1 is divided into the front side and the rear side.
A self-locking mechanism 14 is provided between the radially opposing surfaces of the locking springs 9 and 20, with an allowable space 21 interposed between both ends of the locking spring, which allows initial rotation in the circumferential direction of both ends of the locking spring. Based on this, the screen for inclined windows is configured to transmit the output from the rotating shaft side and lock the output from the hanging cord side.