JPS6324782Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a manual winding device such as a roll screen, and is used to pull the operating string when winding up curtains, blinds, projection screens, etc. The present invention relates to a manual winding device such as a roll screen that manually performs this operation.

The purpose of this invention was to simplify the device configuration to make the whole device compact, to make the stopping position of the screen etc. continuous so that it can be stopped at any position, and to improve the feeling of operation of the operating string. The object of the present invention is to provide a manual winding device such as a roll screen that is light and constant and can be easily operated. is used as a shaft support plate, a shaft portion is formed on this shaft support plate to protrude toward the other side of the L-shape, and a coil spring having engaging folded pieces at both ends is fitted onto these shaft portions, and this coil spring The engagement cylinder and the groove wheel are fitted onto the outside of the holding frame, and the holding frame, which has a multi-step cylindrical shape as a whole by forming the peripheral attachment edge of the holding frame main body in the form of a short cylinder with a bottom, connects the engagement cylinder and the groove. and the vehicle is pivotally supported on the shaft support plate so as to be concentric with the coil spring,
A fitting hole is formed in the holding frame exposed surface of the engagement cylinder, into which a square pin provided at the shaft end of the roll screen is fitted, and when the engagement cylinder rotates, the coil spring is engaged. Forming an engaging part that comes into contact with each of the folded pieces and tightens and fixes the coil spring to the shaft part,
When the groove wheel rotates, the groove wheel comes into contact with each of the engaging folded pieces of the coil spring to unwind and unwind the coil spring from the shaft portion, and the engaged folded pieces of the coil spring and the engaging portion of the engaging tube are attached to the groove wheel. This consists in forming an engaging portion through which the engaging tube is rotated, and furthermore, an operating string is wound around the groove wheel.

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

In the figure, reference numeral 1 denotes a bracket plate bent into a substantially L-shape, and a shaft portion 2 is formed protruding from a surface of the roll screen shaft support plate 1A of the bracket plate 1. Furthermore, on the surface of the shaft support plate 1A, there are arranged on a circle centered on this shaft portion 2 at an appropriate pitch, for example, at an angle of 30°.
Twelve mounting holes 3 are drilled.

A holding frame 4 is fixed to the shaft support plate 1A of the bracket plate 1 by fixing mounting screws 5 into the mounting holes 3.

The holding frame 4 has a mounting edge in which four mounting holes 4B, which match the mounting holes 3 of the shaft support plate 1A, are bored at, for example, 90° intervals on the peripheral edge of a holding frame main body 4A having a short cylindrical shape with a bottom. 4C so that the whole has a multi-stage cylindrical shape.

Furthermore, an insertion groove 4D is formed in the peripheral edge of the holding frame main body 4A, into which a loop-shaped operating string 7 that is wound around a groove wheel 6, which will be described later, is inserted. It's hanging on.

The holding frame 4 is attached to the bracket plate 1 through the mounting holes 3 and 4B as described above, so that when the screen S is mounted on a wall, ceiling, window frame, etc., the mounting surface can be freely selected. Easy to install. Furthermore, even when the hanging direction of the operating cord 7 does not match the mounting surface of the window frame, etc., when the operating cord 7 is attached to an inclined window frame, etc., it can be installed and used.

The mounting hole 4B of the mounting edge 4C can be formed by drilling another mounting hole 4B at a position rotated by 15 degrees with respect to the mounting hole 4B.
Together with the mounting holes 3 in A, it is possible to mount the shaft at 15° intervals to the shaft support plate 1A with a small number of 3 mounting holes.

A coil spring 8 having an engaging folded piece 8A formed by bending both ends outward is fitted onto the shaft portion 2.

Furthermore, an engagement tube 9 is provided on the shaft support plate 1A concentrically with the shaft portion 2.
is pivotally supported via a pivot ring 10. The engagement cylinder 9 is formed into a substantially bottomed cylinder shape, and a fitting hole 9A into which a square pin P1 formed at the shaft end of the roll screen S is fitted is formed at the bottom thereof.

Further, the engagement tube 9 is brought into contact with and engaged with the engagement folded piece 8A of the coil spring 8, and the coil spring 8 is attached to the shaft portion 2.
Engagement part 9B formed with a notch to tighten and fix the
form.

Furthermore, a doughnut-shaped groove wheel 6 is pivotally supported on the shaft support plate 1A and is concentric with the shaft portion 2. That is, concentric circumferential grooves are bored on both sides of the groove wheel 6 to form the shaft support groove 6A, and the shaft support interposed between the shaft support plate 1A surface or between the shaft support plate 1A and the groove wheel 6 is formed. A plurality of rotation guide protrusions 12 are formed on the disk 11 and the inner surface of the holding frame 4, respectively, to guide the rotation of the grooved wheel 6, and the guide protrusions 12 are fitted into the shaft support grooves 6A to move the grooved wheel 6 onto the shaft support plate 1A. It is pivoted on.

Note that protrusions are provided on both wall surfaces of the groove of the groove wheel 6 alternately at equal intervals along the groove direction, and the operating string 7 disposed in the groove can be connected to both wall surfaces having the protrusions. It is gripped from both sides to serve as anti-slip means 6C.

Further, on the inner circumferential surface of the groove wheel 6, there is a locking member that comes into contact with and engages each of the engaging folded pieces 8A of the coil spring 8 when the groove wheel 6 rotates, and unwinds and releases the coil spring 8 from the shaft portion 2. A joint portion 6B is formed to protrude.

The engaging portion 9B of the engaging tube 9 and the engaging portion 6B of the groove wheel 6 are connected to the groove wheel 6 as shown in FIGS. 3 and 4.
The engaging portion 6 is provided by forming a protrusion in the engaging portion 6, and by forming a notch in the engaging tube 9.
The shape and quantity of B and 9B are not particularly limited. Further, in the illustrated example, the engaging portion 9B of the engaging cylinder 9 is disposed within the inner circumferential surface of the groove wheel 6, but the shaft portion 2
If it engages with the engagement folded piece 8A of the coil spring 8 fitted externally, an engagement portion (not shown) is formed protrudingly on the inner circumferential surface of the engagement tube 9, and the inside of the engagement tube 9 is Of course, an engaging part (not shown) of the groove wheel 6 may be disposed at the groove wheel 6. in short,
When the engaging portion 9B of the engaging tube 9 engages with the engaging folded piece 8A of the coil spring 8, the coil spring 8 is connected to the shaft portion 2.
It is sufficient that the engaging portion 6B of the groove wheel 6 is connected to the engaging folded piece 8A of the coil spring 8.
It is sufficient if the coil spring 8 is unwound from the shaft portion 2 and released when engaged with the shaft portion 2.

The mounting hole 3 of the shaft support plate 1A in the illustrated example is threaded so that its edge protrudes in the mounting direction of the holding frame 4 to form a protruding edge 3A. A circumferential groove 4E is formed in which the protruding edge 3A is fitted. With this configuration, the ends of the mounting screws 5 are not exposed from the bracket plate 1, improving the appearance. Also, when attaching the holding frame 4 to the shaft support plate 1A, the center of the holding frame 4 It is installed so that it aligns with the center of the shaft part 2,
At the time of installation, the centers can be easily matched and alignment of the two is easy.

This will explain its use next. First, as shown in FIG. 5, on a mounting surface such as a ceiling, a wall surface, a window frame, etc., one bracket plate 1 has a manual winding device according to this invention, and the other bracket plate 1 supports a screen S. are arranged facing each other, and between these bracket plates 1 is a shaft support A1 having a square pin P1 at one end, and a shaft support A1 having a round pin P2 at the other end.
A winding shaft T, on which the winding shafts 2 and 2 are respectively fitted and one end edge of the screen S is fixed to the circumferential surface, is mounted on the winding shaft T.

In use, the operating string 7 suspended from the insertion groove 4D of the holding frame 4 and wound around the groove wheel 6 is pulled and operated with the fingers. By this pulling operation, the groove wheel 6 is rotated, and the engaging portion 6B of this groove wheel 6 is rotated.
is engaged with the engagement portion 9B of the engagement tube 9 via the engagement folded piece 8A of the coil spring 8, and integrated with the engagement tube 9 via the square pin P1 fitted into the engagement tube 9. The winding shaft T is rotated to enable winding and unwinding of the screen.

Incidentally, as shown in FIG. 6, the winding shaft T may have a built-in spring motor M. The spring motor M is installed inside the shaft end of the winding shaft T opposite to the shaft end on which the winding device according to the invention is disposed, and is connected to a stator attached to the bracket plate 1 via a square pin P1. 20, a removable pillow 21 formed in the same shape as the inner surface shape of the winding shaft T, and fitted inside the winding shaft T to be integrated with the winding shaft T; and the stator 20 and the pillow 21 are rotated by each other. Long cylindrical inner core 22 that can be freely connected
A torsion coil spring 23 is fitted onto the inner core 22 and has one end connected to the stator 20 and the other end connected to the pillow 21 via a bent piece 23A; A rotator 24 is fitted and fixed to the shaft end of the rotator 24, and a rotator 24 is provided as necessary to connect the rotator 24 and the pillow 21 to each other. It consists of an outer core 25 that provides completeness as a single item.

By using this spring motor M installed inside the winding shaft T, the operation string 7 can be pulled by the built-in torsion coil spring 2 when winding the screen S.
It is assisted by the elastic force of 3 and becomes light. Also,
When unwinding the screen S, the operating string 7 is pulled against the elastic force of the built-in torsion coil spring 23, so that an appropriate load can be applied to the operator even during unwinding. That is, normally when this spring motor M is not used, the hanging load of the screen S is applied to the winding shaft T, and as a result, the operating feeling during unwinding tends to be too light, making it uncomfortable for the operator to use. Difficulties where feelings arise,
On the other hand, it has the disadvantage that it feels heavy when winding in and requires effort to store the screen S, but by using a spring motor M, the pulling operation for winding in and unwinding the screen S can be done almost constantly. This can be done with a sense of operation. In the figure, reference numeral 26 denotes a bracket member, which may be formed to have the same shape as the holding frame 4 as shown in FIG. 5, or a conventional one as shown in FIG. 6. This bracket member 26 is provided with a square pin P1 or a round pin P in order to facilitate attachment and detachment of the winding shaft T.
An introduction groove 27 for introducing 2 into the holding hole is continuously formed in the holding hole.

This device is constructed as described above, and one side of the L-shape of the bracket plate 1, which is bent into a substantially L-shape, is used as a shaft support plate 1A. Shafts 2 are formed to protrude toward the other side, and a coil spring 8 having engaging folded pieces 8A at both ends is fitted onto these shafts 2, and this coil spring 8 has an engaging tube 9, a groove wheel 6, and an engaging tube 9. The engaging cylinder 9 and the groove wheel 6 are connected to each other by a coil spring by the holding frame 4, which is externally fitted and has an attachment edge 4C formed on the peripheral edge of the holding frame main body 4A, which has a bottomed cylindrical shape and has a multi-stage cylindrical shape as a whole. 8 and the shaft support plate 1A so as to be concentric with 8.
The engagement tube 9 has a square pin P1 provided at the shaft end of the roll screen S on the exposed surface of the holding frame 4.
At the same time, the engaging tube 9 is rotated to come into contact with each of the engaging folded pieces 8A of the coil spring 8, and the coil spring 8 is inserted into the shaft portion 2.
An engaging portion 9B is formed to tighten and fix the groove wheel 6.
When the groove wheel 6 rotates, it comes into contact with each of the engaging folded pieces 8A of the coil spring 8, thereby unwinding and unwinding the coil spring 8 from the shaft portion 2, and the engaging folded pieces 8A of the coil spring 8 and the engaging cylinder 9. The engaging portions 6B are formed to rotate the engaging tube 9 through the engaging portions 9B of the groove wheel 6, and the operating string 7 is wound around the groove wheel 6, so the configuration is simple and compact. A manual winding device can be provided that can stop the screen S at any position by pulling the screen.

That is, by pulling the operating string 7, the groove wheel 6 is rotated, and this rotation of the groove wheel 6 causes the engagement portion 6B of the groove wheel 6 to come into contact with the engagement folded piece 8A of the coil spring 8.
The coil spring 8 is unwound and released from the shaft portion 2 to rotate the coil spring 8 on the shaft portion 2, and the engagement folded piece 8A of the coil spring 8 is caused by the rotation of the coil spring 8.
Rotate the engagement tube 9 that engages with. Therefore,
Rotate the winding shaft T by pulling the operating string 7,
The screen S can be rolled up and rewound. And the state where the screen S is involved,
Alternatively, in the unwinding state, a suspension load of the screen S is applied to the winding shaft T, and the winding shaft T tries to rotate in the direction in which the screen S is unwound. However, the engaging tube 9 that is integrated with the winding shaft T through the square pin P1 has an engaging portion 9B of the engaging tube 9 that comes into contact with the engaging folded piece 8A of the coil spring 8. Since it is tightly wound and fixed to the shaft portion 2, rotation is stopped by the engagement folding piece 8A. Therefore, the screen S can be stopped and fixed at any position.

Moreover, since it is a one-way clutch using a coil spring 8, the rotation of the grooved wheel 6 is smoother than other clutches such as a melon wheel, and no abnormal noise is generated. In addition, when using a conventional locking type clutch such as a melon wheel, the locking position was limited and the screen S stopped in stages, but with this invention, the screen S can be stopped continuously. You can get the location. That is, the screen S can be stopped at any position.

Furthermore, by fitting the coil spring 8 onto the shaft portion 2 a little tighter, friction between the shaft portion 2 and the coil spring 8 can be obtained, and fluctuations in the hanging load due to changes in the amount of unwinding of the screen S can be achieved. It is possible to generate a traction load that can cover the above, and to obtain a stable operation feeling in which the traction operation of the operating string 7 by the fingers is always approximately constant.

In addition, the structural members include a shaft portion 2 protruding from the bracket plate 1, and a coil spring 8 fitted onto the shaft portion 2.
and an engagement cylinder 9 and a groove wheel 6 that are fitted onto the coil spring 8 and engaged with the engagement folded pieces 8A at both ends thereof,
Since it is comprised of a holding frame 4 that holds these and is pivotally supported on the bracket plate 1, the number of parts can be reduced, and the holding frame 4 includes the shaft portion 2, coil spring 8, engaging tube 9,
Coupled with the concentric arrangement of the groove wheels 6, the device thickness can be reduced and the device configuration can be made compact. Furthermore, the width of the mounting screen can be increased by the reduction in device thickness. Furthermore, the screen S is attached to the winding shaft T.
Since sufficient space can be provided for the misalignment of the screen S that may occur when winding the screen S, it can be easily dealt with.
There is no need for the side edges of the bracket plate 1 to come into contact with the bracket plate 1 or the like.

As explained above, according to this invention, the device configuration is simplified and the entire device is made compact.
Further, the operation feeling of the screen S is light and constant, and the screen S can be stopped at any position, which is extremely useful in practice.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, and FIG. 1 is an overall front view, FIG. 2 is a sectional view taken along the line -- in FIG. 1, FIG. 3 is a sectional view taken along the line -- in FIG. FIG. 5 is a side view of another embodiment taken along the same line, FIG. 5 is a side view of the device in use, and FIG. 6 is a partially cutaway side view of another device in use. 1... Bracket plate, 1A... Shaft support plate, 2...
Shaft, 3...Mounting hole, 3A...Protruding edge, 4...
Holding frame, 4A... Holding frame body, 4B... Mounting hole,
4C...Mounting edge, 4D...Insertion groove, 4E...Peripheral groove, 5...Mounting screw, 6...Groove wheel, 6A...Spindle support groove, 6B...Engaging part, 6C...Slip prevention means, 7
...Operation string, 8...Coil spring, 8A...Engagement fold, 9...Engagement tube, 9A...Fitting hole, 9B...Engagement portion, 10...Spindle ring, 11...Shaft Branch disc,
12...Rotation guide protrusion, S...Screen, T...
... Winding shaft, A1, A2 ... Shaft support, P1 ... Square pin, P2 ... Round pin, M ... Spring motor,
20...Stator, 21...Pillow, 22...
Inner core, 23... Torsion coil spring, 24
...Rotator, 25 ...Outer core, 26
...Bracket member, 27...Introduction groove.

Claims (1)

[Scope of utility model registration request] One side of the L-shape of the bracket plate bent into a substantially L-shape is used as a shaft support plate, and a shaft portion is formed on this shaft support plate to protrude toward the other side of the L-shape. A coil spring having engagement folds at both ends is fitted onto the shaft, an engagement tube and a groove wheel are fitted onto the coil spring, and the mounting edge of the periphery of the holding frame body, which is a short cylinder with a bottom, is fitted onto the shaft. The engaging cylinder and the groove wheel are supported on the shaft supporting plate so as to be concentric with the coil spring by a holding frame which is formed into a multi-stage cylindrical shape as a whole. A fitting hole is bored into which a square pin provided at the shaft end of the roll screen is fitted, and the engaging tube rotates to abut against each of the engaging folded pieces of the coil spring, thereby pivoting the coil spring. The groove wheel has an engaging portion that is wound and fixed to the shaft portion, and the groove wheel rotates to unwind and release the coil spring from the shaft portion, and the engagement portion of the coil spring and the engagement tube are engaged with each other. 1. A manual winding device such as a roll screen, characterized in that an engaging portion is formed to rotate an engaging tube through each portion, and an operating string is wound around the groove wheel.