JPS6349513Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a screen guide device such as a roll screen that rolls up and stores curtains, blinds, projection screens, etc., and unrolls and uses them. The present invention relates to a screen guiding device such as a roll screen that can stretch a screen from below upward or horizontally, or stretch a screen arranged in a horizontal plane horizontally.

A screen such as a roll screen device that winds up the screen using the elastic force of a built-in torsion coil spring is used by hanging down due to the gravity of an edge fixture fixed to the lower edge, so the screen is stretched in a horizontal plane. or tensioning from the bottom to the top requires special guiding devices.

In providing the above-mentioned guide device, this invention has the following features:
To simplify the configuration, to improve the appearance without exposing the rotating string on the screen extension surface, and to enable the edge of the screen to always move parallel to the roll screen body. It was devised for this purpose, and its gist is to provide a winding shaft that winds up a long screen of appropriate width using the elastic force of a built-in torsion coil spring, and to attach one edge of this rolled screen to a cylinder. The screen is fixed to a shaped edge fixture parallel to the axis of the fixture, and the screen can be freely taken up and pulled out by moving the edge fixture away from and approaching the winding shaft,
On the other hand, one end of two guide strings is fixed near both ends of the winding shaft, and these guide strings are arranged parallel to each other along the side edges of the screen up to the edge fixing device. These two guide strings are inserted from both ends of the edge fixture, crossed within the fixture, and led out to the opposite side to form a crank shape. The guide strings are again arranged parallel to each other along the extending direction of the side edges of the guide strings, and the other ends of the guide strings are connected to a tensioning means and stretched, so that the entire guide string is arranged in a substantially H-shape with the edge fixing device as the middle part. At both ends of the edge fixing device, a string guide device is attached which pivots a rotary body such as a pulley that guides the two guide strings to be inserted so as to be easily movable. A loop-shaped rotating string is fixed to one of these two string guides arranged at both ends of the screen, and is stretched parallel to the extending direction of the side edge of the screen to be pulled out. The invention consists in installing a rotating tool having a one-way clutch made of a coil spring so that the rotating string can be rotated only by an operating lever.

An embodiment of this invention will be described below based on the drawings.

In the figure, 1 is the roll screen main body,
It is formed by wrapping a long screen S of an appropriate width around a winding shaft T, and a spring motor M having a built-in torsion coil spring (not shown) is fitted into one shaft end of the winding shaft T. be done. Spring motor M is
When unwinding the screen S, elastic force is applied to the built-in torsion coil spring during the unwinding operation, and when rewinding the screen S, the elastic force applied and accumulated during the unwinding operation is used to wind the screen S around the winding shaft T. It is for storage.

The edge of the screen S on the opposite side to the fixed edge when it is fixed to the winding shaft T and wound up is fixed to an edge fixture 10 parallel to the axis of this fixture 10. This edge fixture 10 is connected to the screen S.
It is formed into a cylindrical shape and has a fitting groove 11 in which the end edge thereof is accommodated and fixed. In the figure, a pair of side plates 12 having an arcuate cross section are fixed by two partition walls 13, and two guide strings 30, which will be described later, are inserted through a hollow space surrounded on all sides by the partition walls 13 and the side plates 12. A hole 14 is defined as the hole 14, and a groove-shaped space formed by the side plate 12 and the partition wall 13 is defined as the fitting groove 11 at the edge of the screen S.
Incidentally, the upper and lower edges of the side plate 12 are each bent inward to form an engaging piece 12A, and a fitting piece S1 fixed to the edge of the screen S is attached to the engaging piece 12A. Engage the screen S with the edge fixture 1
It is fixed at 0 (see Figure 5). Also, the first
As shown in Figure 0, the peripheral surface of the edge fixture 10 has
Surplus portion S of screen S fixed with fitting piece S1
2 may be wound and its edges fixed with adhesive S3. In this case, the edge fixing device 10 has the same pattern as the screen S to improve the appearance.

At both ends of the edge fixture 10, string guides 20 are attached that guide guide strings 30, which will be described later, stretched along both side edges of the screen S into the edge fixture 10. The string guide 20 is formed to have the same cross-sectional shape as the edge fixture 10 by protruding a fitting protrusion 21 that is fitted into the insertion hole 14 of the edge fixture 10 . Inside, a pair of guide string guide paths 22 are formed which communicate with the insertion hole 14 of the edge fixture 10 from above and below. Two rotating bodies such as pulleys 23 are mounted in the guide path 22 to facilitate guide movement of the guide string 30, and the guide string 30 is guided by the circumferential groove of the pulleys 23.

The two guide strings 30 are made of wire, string, etc.
Each guide string 30 is placed near both ends of the winding shaft T.
One end of the guide strings 30 is fixed at a time, and the guide strings 30 are arranged in parallel along the side edges of the screen S up to the edge fixing device 10. The guide strings 30 are inserted from each side, crossed within this fixture 10, and led out to the opposite side, and these led out guide strings 30 are
A pair of screens S are stretched parallel to each other along the extending direction of the side edges of the screen S to be pulled out, and are fixed to a wall, ceiling, window frame, etc. Therefore, each of the pair of guide strings 30 takes on a crank shape by being crossed within the edge fixture 10, and as a whole is arranged in a substantially H-shape with the edge fixture 10 as the middle part. It will be established. The other end of the guide string 30 is not fixed to the mounting surface, but is bent via a pulley 31, and is connected to tension means 32 such as a coil spring or a turnbuckle to adjust the tension. .

Note that one of the string guides 20 disposed at both ends of the edge fixture 10 has a rotating string attachment protrusion 24 on the opposite side to which the fitting protrusion 21 is formed, to which the rotating string 40 is fixed. A rotary cord attachment hole 25 is formed in the protruding part.

The rotating string 40 is made of a ring-shaped braid, bead chain, or the like, and is wound around the pulley 41 and the groove wheel 56 in the rotating tool 50, and stretched in parallel with the guide string 30.

As shown in FIGS. 6 to 9, the rotating tool 50 includes a groove wheel 56 around which the rotating string 40 is wound, and a groove wheel 56 on which the rotating string 40 is wound.
6, and a one-way spring clutch that connects the groove wheel 56 and the operation lever 58 so that the groove wheel 56 can be rotated only when the operation lever 58 is turned. Become.

That is, the rotating tool 50 has a shaft portion 52 formed protrudingly on a bracket plate 51, a coil spring 53 having engaging folded pieces 53A at both ends is fitted onto the shaft portion 52, and the bracket plate 51 is mounted concentrically with the coil spring 53. The holding frame 54 pivotally supports the engagement tube 55 and the groove wheel 56, and when the groove wheel 56 rotates, it comes into contact with each of the engagement folded pieces 53A of the coil spring 53, and the coil spring 53 A square hole 55B is formed in the holding frame exposed surface of the engaging cylinder 55, and when the engaging cylinder 55 rotates, the coil spring is fixed. The coil spring 53 is unwound and released from the shaft portion 52 by contacting each of the engagement folded pieces 53A of the coil spring 53 and the groove wheel 56 via the engagement folded pieces 53A of the coil spring 53 and the engagement portion 56A of the groove wheel 56, respectively. A lever mounting shaft 57 with a square pin 57A protruding from a square hole 55B of the engagement tube 55 is rotatably arranged in the shaft part 52, and this square pin 57A is connected to an operating lever 58 formed in the shape of a crank. Therefore, by rotating the operating lever 58, the engagement tube 55 connected via the square pin 57A is rotated, and the rotation of the engagement tube 55 causes the engagement portion 55A and the engagement folded piece of the coil spring 53 to rotate. 53
A, the groove wheel 56 is rotated via the engaging portion 56A of the groove wheel 56, and the rotation string 40 is rotated. Therefore, by the rotation of the rotation string 40, the edge fixture 10 moves upward and the screen S is unwound. The elastic force of the torsion coil spring of the roll screen body 1 and the weight of the screen S act on the edge fixture 10 disposed at the edge of the unrolled screen S, causing the edge fixture 10 to move downward. I'm trying to move it to. In other words,
Although an attempt is made to rotate the groove wheel 56, since the coil spring 53 is tightly wound and fixed to the shaft portion 52, the groove wheel 56 cannot be rotated and remains in a stopped state. Therefore, the edge fixture 10 can be stopped at the unwound position.

In addition, 54A in the figure is a rotation guide protrusion for rotating the groove wheel 56 within the holding frame 54, and this rotation guide protrusion 54A is inserted into a concentric circumferential groove 56B formed on both sides of the groove wheel 56. The groove wheel 56 is made rotatable. Further, on both wall surfaces of the groove 56C of the groove wheel 56, protrusions are provided alternately at equal intervals along the direction of the groove 56C, and both wall surfaces having the protrusions form the groove 56C.
The rotating string 40 disposed inside is gripped from both sides to serve as anti-slip means 56D. Further, reference numeral 59 in the figure is a pivot ring provided to facilitate rotation of the engagement cylinder 55. The engaging portion 55A of the engaging tube 55 and the engaging portion 56A of the groove wheel 56 are formed so as to protrude from the groove wheel 56, as shown in FIGS. 8 and 9. Although each of the engaging portions 55A and 56A is provided by forming a cutout therein, the shape and number of the engaging portions 55A and 56A are not particularly limited.

In addition, in the illustrated example, the engaging portion 55A of the engaging tube 55 is disposed within the inner circumferential surface of the groove wheel 56, but the engaging portion 53 of the coil spring 53 externally fitted onto the shaft portion 52 is
A, an engaging part (not shown) is formed protrudingly on the inner peripheral surface of the engaging cylinder 55, and an engaging part (not shown) of the groove wheel 56 is formed in the engaging cylinder 55. ) may be arranged. In short, when the engaging portion 56A of the groove wheel 56 engages with the engaging folded piece 53A of the coil spring 53, it is sufficient that the coil spring 53 is tightened and fixed to the shaft portion 52, and the engaging portion 56A of the engaging tube 55 is The engaging portion 55A may be of any type as long as it unwinds the coil spring 53 from the shaft portion 52 when it engages with the engaging folded piece 53A of the coil spring 53.

This device constructed as described above is equipped with a winding shaft T that winds up a long screen S of an appropriate width using the elastic force of a built-in torsion coil spring, and one edge of this rolled screen is connected to a tube. The screen S is fixed to a shaped edge fixture 10 so as to be parallel to the axis of the fixture 10, and by moving the edge fixture 10 away from and approaching the winding shaft T, the screen S can be freely rolled up and pulled out. On the other hand, one end of two guide strings 30 is fixed near both ends of the winding shaft T, and
These guide strings 30 are arranged parallel to each other along the side edges of the screen S up to the edge fixtures 10,
The two guide strings 30 are inserted from both ends of the edge fixture 10, crossed within the fixture 10, and led out to opposite sides to form a crank shape.
These guided strings 30 are again arranged parallel to each other along the extending direction of the side edge of the screen S to be drawn out, and the other ends of each of the guide strings 30 are connected to a tensioning means 32 and stretched. The edge fixture 10 is arranged in a substantially H-shape as a whole with the middle part, and the two guide strings 30 to be inserted are guided at both ends of the edge fixture 10 so as to be easily movable. A string guide 20 that pivotally supports a rotating body such as a pulley 23
These 2
A loop-shaped rotating string 40 is fixed to one side of each string guide 20 and stretched parallel to the extending direction of the side edge of the screen S to be pulled out.
A rotating tool 50 having a one-way clutch made of a coil spring 53 is installed in order to rotate the rotating string 40 only by an operating lever 58. Roll screen devices, which were previously limited, can be installed in any direction with a simple configuration.

That is, it becomes possible to extend a screen S disposed in a vertical plane upwardly or laterally, or to extend a screen S disposed in a horizontal plane horizontally.

Furthermore, although the configuration is simple, consisting of the pair of guide strings 30 and the string guide 20, the edge fixture 10 can always be moved parallel to the axis of the roll screen main body 1. Therefore, when the screen S is wound onto the winding shaft T, there is no risk of deflection winding, and there is no occurrence of winding misalignment such as rubbing the side edge of the screen S against the bracket B.

That is, if only one guide string 30 is used, the edge fixture 10 will be tilted only in one direction, but if the two guide strings 30 are each crank-shaped as described above, these two guide strings 30 will tilt only in one direction. As mentioned above, the edges are crossed within the edge fixture 10 and stretched in a substantially H-shape with the edge fixture 10 as the middle part, so that The other guide string 30 can be tilted only in the opposite direction, and mutual tilting is restricted. Therefore, the edge fixture 10 can always move parallel to the axis of the roll screen main body 1, and the winding axis T
There is no risk of deflection winding when winding the screen S into the bracket B.
This also eliminates the occurrence of winding misalignment such as rubbing.

In addition, since the roll screen main body 1 has a built-in torsion coil spring, the unrolled screen S
is always kept tensioned by the elastic force of the torsion coil spring and never bends.

Note that one end of each guide string 30 is fixed to a mounting surface such as a wall surface, and the other end is connected to the tensioning means 3.
2, the guide string 30 can be kept under appropriate tension at all times, and the accuracy of parallel movement of the edge fixture 10 can be improved. By arranging the pulley 23 in the guide string guide path 22 in the string guide 20, the edge fixture 10 can be moved in parallel even more easily.

A loop-shaped rotating string 40 is fixed to one side of the string guide 20 and stretched parallel to the guide string 30, and the rotating string 40 has a one-way clutch made of a coil spring 53. Since I installed 50,
The loop-shaped rotating string 40 can be rotated by the rotating tool 50, and the edge fixture 10 can be moved to unwind and wind the screen S. Moreover, the rotating tool 50
Since it has a one-way clutch using a coil spring 53, it can be stopped at the unwound position without being moved or entangled by the weight of the unwound screen S or the elastic force of the built-in torsion coil spring, and furthermore, Unlike other locking means such as a ratchet wheel, the stop position is not an intermittent stop position, but a continuous stop position that can be stopped at any position. In addition, unlike locking means such as a ratchet wheel, no abnormal noise is generated when locking or releasing the lock.

Since the loop-shaped rotating string 40 is fixed to one side of the string guide 20, the rotating string 40 will not be exposed on the surface where the screen S is stretched when the screen S is rolled up, that is, when the screen S is not stretched. Improve your appearance without any clutter.

As explained above, according to this invention, a screen arranged in a vertical plane can be stretched from below upwards or laterally, and a screen arranged in a horizontal plane can be stretched horizontally. It is possible to do this with a simple configuration, and the edge fixing device of the screen can always be moved parallel to the roll screen body, which prevents the occurrence of winding misalignment. This has various effects that are extremely useful in practical terms, such as the ability to improve appearance without exposing the rotating string.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; Fig. 1 is a front view showing the whole, Fig. 2 is a front view showing another embodiment, and Fig. 3 is a diagram showing the attachment of a string guide to an edge fixture. 4 is a partially cutaway side view of the string guide, FIG. 5 is a sectional view taken along line A-A in FIG. 3, FIG. 6 is a front view of the rotating tool, and FIG. The figure is number 6
8 is a sectional view taken along line C-C in FIG. 7, and FIG. 9 is a sectional view taken along line C-C in FIG. 7.
10 is a partially omitted cross-sectional view taken along the line -C, showing another spring clutch, and FIG. 10 is a cross-sectional view taken along the line A--A in FIG. 3, showing the fixing of the screen edge. 1... Roll screen main body, S... Screen, S1... Fitting piece, S2... Surplus part, S3...
Adhesive, T... Winding shaft, M... Spring motor, B... Bracket, 10... Edge fixture, 1
1... Fitting groove, 12... Side plate, 12A... Engaging piece, 13... Partition wall, 14... Insertion hole, 20...
Strap guide, 21... fitting protrusion, 22... guide path,
23...Pulley, 24...Rotating string attachment protrusion, 2
5... Rotating string attachment hole, 30... Guide string, 31...
...Pulley, 32...Tensioning means, 40...Rotating string, 41...Pulley, 50...Rotating tool, 51...
... Bracket plate, 52 ... Shaft portion, 53 ... Coil spring, 53A ... Engagement folding piece, 54 ... Holding frame, 5
4A...Rotation guide protrusion, 55...Engagement tube, 55A
...Engagement part, 55B ... Square hole, 56 ... Groove wheel, 5
6A... Engaging portion, 56B... Circumferential groove, 56C...
groove, 56D... anti-slip means, 57... lever mounting shaft, 57A... square pin, 58... operating lever,
59... Pivot support ring.

Claims (1)

[Scope of utility model registration request] A winding shaft is provided that winds a long screen of appropriate width using the elastic force of a built-in torsion coil spring, and one edge of this rolled screen is attached to a cylindrical edge fixture parallel to the axis of this fixture. By moving this edge fixture away from and approaching the winding shaft, the screen can be taken up and pulled out freely.On the other hand, two guide strings are attached near both ends of the winding shaft. In addition to fixing one end at a time, these guide strings are arranged parallel to each other along the side edges of the screen up to the edge fixing device, and these two guide strings are inserted from both ends of the edge fixing device. These guide strings are crossed in this fixture and led out to the opposite side to form a crank shape, and these led out guide strings are again arranged in parallel along the extension direction of the side edge of the screen to be pulled out. The other end of each of the strings is connected to a tensioning means and stretched, and the entire string is arranged in a substantially H-shape with the edge fixing device as the middle part, and the two ends of the string are inserted at both ends of the edge fixing device. In order to make the guide string of the book easily movable, a string guiding device is attached which pivots on a rotating body such as a pulley that guides the book. A rotating string is fixed and stretched parallel to the extending direction of the side edge of the screen to be pulled out, and this rotating string is equipped with a coil spring so that the rotating string can be rotated only by the operation lever. What is claimed is: 1. A screen guide device for a roll screen, etc., characterized in that it is equipped with a rotating tool having a one-way clutch.