JPH0137103Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Industrial application field) This invention is mainly used when installing a spring motor type with a clutch or a spring booster type roll screen without a clutch on a bracket. This invention relates to an improvement in a first winding twist tacking/clutching device such as a roll screen that temporarily stops twisting and stops the screen at an appropriate pull-out position.

(Prior art) Conventionally, in a spring booster type roll screen, etc., a locking groove is cut out at a suitable position on the peripheral edge of a roller pipe attached to the left end face of the stator, and a shaft is attached to the left end face of the rotator so as to be able to swing freely. The first winding twist of the coil spring is temporarily stopped when installing a roll screen or the like by means of a locking means using a supported ratchet plate.

(Problem to be solved by the invention) However, although it can be used for gravity ball type roll screens, etc., it cannot be used for spring motor type roll screens with a clutch that locks the screen at the appropriate pulled out position. It was unusable. In addition, there is a risk that the ratchet may come off the locking groove of the roller pipe, and the initial twist of the coil spring cannot be reliably held and temporarily secured.
This caused a decrease in the efficiency of installation work for roll screens, etc.

Therefore, this invention was devised to eliminate the various drawbacks mentioned above, and it is practical because it can be used as both a spring motor type roll screen and a spring booster type roll screen.
In addition, it has a great economical effect, and when installed, the coil spring's initial twist can be securely held and temporarily secured, significantly improving the efficiency of installing roll screens, etc., and furthermore, after installation, the screen is securely attached to the roller pipe. The purpose of the present invention is to provide a temporary fixing and clutching device for the first roll of a roll screen, etc., which can be wound on a roll screen, etc.

(Means for Solving the Problem) In order to achieve the above-mentioned object, this invention has a coil spring for twisting the first winding, and is installed at the left end of a spring motor built into a roller pipe for winding a roll screen. , a stator for holding the left bracket, which has a pair of fitting parts for fitting the gravity ball on the upper and lower outer surfaces of its left end, which are substantially opposed to each other; Correspondingly, a pair of fitting portions into which the gravity ball is fitted is provided, and a fitting groove is provided continuously to the fitting portion and recessed in the outer circumferential surface of the gravity ball, and a stopper is provided between one side of the fitting groove. a rotator having a protruding shape and two recesses arranged at appropriate intervals between the other side of each fitting part of the fitting groove; A pair of protrusions are provided near both sides of the opening on the inner surface of the setter main body, a small protrusion is provided on one of the protrusions, and an elastic F-shaped protrusion is provided near each protrusion on the inner surface of the setter main body. The setter consists of a pair of protrusions arranged line-symmetrically to prevent gravity balls from flying out, and two large protrusions arranged at appropriate intervals between each protrusion on the inner surface of the setter body. After fitting the gravity ball into each fitting part from the fitting part of the rotator,
A means for solving the problem is to fit the setter into the fitting groove of the rotator so that the setter can rotate freely so that the projecting pieces are brought into contact with each fitting part so as to be openable and closable.

(Function) That is, according to this invention, when installing a roll screen, etc., after winding the coil spring 10 of the spring motor A a predetermined number of times according to the load of the screen S, as shown in FIG. The gravity ball 13 is fitted into the fitting parts 14 and 15 from the fitting parts 17 and 18 of the rotator 5, and then
The projecting pieces 27 and 28 of setter B are fitted to 18,
By bringing the large protrusion 29 on one side into stop contact with the stopper 19, the initial twist of the coil spring 10 is maintained and the coil spring 10 is temporarily fixed.

After installing the roll screen, etc., turn the setter B counterclockwise until the small protrusion 26 is fitted into the recess 21 on the other side and the large protrusion 30 on the other side is stopped by the stopper 19, as shown in FIG. By moving the setter B to remove the projecting pieces 27 and 28 from the fitting parts 17 and 18 of the rotator 5, the stator 4
When the lower gravity ball 13, which had been fitted into the fitting part 15 of the rotator 5, falls into the fitting part 18 of the rotator 5 due to its own weight, and the temporary fixation of the lower part of the rotator 5 is released, the first winding of the coil spring 10 occurs. Due to the torsional elastic restoring force, the rotator 5 and setter B rotate to the left, and the upper gravity ball 1
3 is ejected to the left side by the collision from the right side of the upper insertion part 17 of the rotator 5, so that the temporary fixing on the upper side of the rotator 5 is also released and the screen S is wound around the roller pipe 1.

(Example) Hereinafter, a spring motor type roll screen will be described as an example of this invention based on the drawings.

In the figure, A is a spring motor built into the left end of a roller pipe 1 for winding a screen such as a roll screen, and this spring motor A is attached to a stator with a rectangular shaft pin 3 that is fixed to a left bracket 2 during installation. A rotator 5 is rotatably supported on the outer surface of the left end of the pillow 7 via a pair of bushes 6, and an outer core 8 is installed between the outer surface of the right end of the rotator 5 and the outer surface of the right end of the pillow 7. Between the outer surface of the left end of the coil holder 9 fitted to the right end of the stator 4 and the outer surface of the approximately central portion in the longitudinal direction of the pillow 7 is a coil for first winding twisting, which is wound a predetermined number of times according to the load of the screen S. A spring 10 is installed inside the outer core 8, and an inner core 11 is installed between the outer surface of the right end of the coil holder 9 and the outer surface of the left end of the pillow 7. It is formed so as to be rotatably supported via a pair of inner core bushes 12 so as to be arranged.

In such a spring motor A such as a roll screen, a pair of fitting portions 14 and 15 for fitting the gravity ball 13 are recessed in the upper and lower outer surfaces of the left end of the stator 4 and are substantially opposed to each other, and the left end of the rotator 5 is recessed. A fitting groove 16 is provided on the outer surface along the circumferential direction, and a pair of fitting parts 17 and 18 for fitting the gravity balls 13 corresponding to the respective fitting parts 14 and 15 are provided at appropriate positions in the fitting groove 16. to be drilled. Furthermore, each fitting part 17, 18 of the fitting groove 16
A stopper 19 is provided protrudingly between one side of the fitting groove 16, and two recesses 20, 21 are provided at appropriate intervals between the fitting portions 17, 18 of the fitting groove 16 on the other side.

On the other hand, B is the insertion part 17, 18 of the rotator 5.
This setter B is a setter for opening and closing.
Opening 23 on the inner surface of the setter main body 22 that is approximately C-shaped
Protrusions 24 and 25 are provided near both sides, a small protrusion 26 is provided on the protrusion 24 on one side, and an elastic F-shaped gravity is provided near each protrusion 24 and 25 on the inner surface of the setter main body 22. A pair of protrusions 27 and 28 for preventing the balls 13 from flying out are provided line-symmetrically, and two large protrusions 29 and 30 are arranged at appropriate intervals between each protrusion 27 and 28 on the inner surface of the setter body 22. It is formed to do so.

After the gravity balls 13 are fitted into the fitting parts 14 and 15 of the stator 4 of the spring motor A through the fitting parts 17 and 18 of the rotator 5, the fitting grooves 16 of the rotator 5 are fitted.
Setter B is placed on each fitting part 17, 18, and protrusion 2 is placed on
7 and 28 are rotatably fitted together so that they are in contact with each other so that they can be opened and closed. In this case, the small protrusion 24 of the setter B on one side is fitted into the recess 20 on one side of the rotator 5, and the stopper 19 of the rotator 5 is arranged between the pair of large protrusions 29 and 30 of the setter B. to be done.

Further, the setter B is provided in a substantially C-shape,
In addition, although the description and illustrations show that the pair of protrusions 27 and 28 are provided line-symmetrically in the vicinity of the respective protrusions 24 and 25 on the inner surface of the setter body 22, the present invention is not limited to this, and as shown in FIG. 22 opening 23
The retaining pins 3 of the connecting pieces 31 are respectively protruded on opposite sides of the
After fitting each of the stop holes 34 of the connecting plate 33 into the connecting plate 33, the ends of the stop pins 32 of each connecting piece 31 may be welded and crushed.
It is also possible to provide 5 and 36 point-symmetrically.

(Effect of the invention) Since this invention is configured as described above, when installing a roll screen, etc., a prescribed tool having a square hole at one end is inserted into the square shape of the stator 4 of the spring motor A, as shown in FIG. Fit the shaft pin 3 into the coil spring 10 of the stator 4.
After winding the screen S a predetermined number of times according to the load of the screen S, the gravity balls 13 are inserted into the fitting parts 14 and 15 of the stator 4 and the fitting parts 17 and 15 of the rotator 5, respectively.
The protrusions 27 and 28 of the setter B are fitted into the fitting parts 17 and 18 of the rotator 5, and the large protrusion 2 on one side is fitted into the stopper 19.
By making contact so that 9 is stopped, the initial twist of the coil spring 10 can be securely held and temporarily fixed, so set it on the left bracket 2 while holding the rectangular shaft pin 3 of the spring motor A with your hand. It is easy to operate and can significantly improve the efficiency of installing roll screens and the like.

After installing the roll screen, etc., turn the setter B counterclockwise until the small protrusion 26 is fitted into the recess 21 on the other side and the large protrusion 30 on the other side is stopped by the stopper 19, as shown in FIG. By moving the setter B to remove the projecting pieces 27 and 28 from the fitting parts 17 and 18 of the rotator 5, the stator 4
When the lower gravity ball 13, which had been fitted into the fitting part 15 of the rotator 5, falls into the fitting part 18 of the rotator 5 due to its own weight, and the temporary fixation of the lower part of the rotator 5 is released, the first winding of the coil spring 10 occurs. Due to the torsional elastic restoring force, the rotator 5 and setter B sequentially rotate to the left through the pillow 7 and the outer core 8, and the upper gravity ball 13 is rotated by a collision from the right side of the upper insertion part 17 of the rotator 5. Since the screen S is pushed out to the left, the temporary fixation on the upper side of the rotator 5 is also released, and the screen S is reliably wound around the roller pipe 1.

Moreover, this invention not only functions as a temporary fixing device for the first twist of the coil spring 10 as described above, but also allows the screen S to be positioned appropriately while resisting the elastic force of the coil spring 10 of the spring motor A. When the rotator 5 is pulled out and released, the rotator 5 moves to the upper gravity ball 13 of the spring motor A and the fitting part 14 of the stator 4.
When the screen S is pulled out slightly, the gravity ball 13 comes off from the fitting part 14 and the roll screen S is rolled up by the elastic restoring force of the coil spring 10. It can also function as a clutch device that locks in a certain extended position. Therefore, the device of this invention functions as a temporary fixing device for twisting the first winding of the coil spring 10 and as a clutch device for appropriately locking the screen S at the drawn-out position. It can be used for both spring booster type roll screens and has great practical and economical effects.

In addition, the setter body 22 of setter B is abbreviated to C.
When provided in the shape of a letter, the fitting groove 16 of the rotator 5
Since the opening 23 of the setter B can be expanded when rotatably fitting the setter B to the rotator 5, the operation of fitting the setter B to the rotator 5 is extremely simple. Also,
After fitting the setter B into the fitting groove 16 of the rotator 5, if each connecting piece 31 is connected with the connecting plate 33, the setter B will be inserted into the opening 23 when the clutch is operated.
Since the clutch can be prevented from being expanded, it can reliably perform its function as a clutch device. Furthermore, by providing elastic protrusions 27, 28, 35, 36 on the inner surface of the setter main body 22 of the setter B, the protrusions 27, 28, 35, 36
The gravity balls 13
can be reliably prevented from flying out. In this case, fitting means between the recesses 20 and 21 of the rotator 5 and the small protrusions 26 of the setter B, and
stopper 19 and large protrusion 29,3 of setter B
The rotating operation of the setter B can also be made extremely smooth by means of stopping means etc. with 0.

As explained above, according to this invention, it functions as a coil spring first winding torsion temporary fixing device and a screen clutching device, and can be used as both a spring motor type and a spring booster type roll screen, making it practical. Not only is it highly economical, but it also allows the initial twist of the coil spring to be securely held and temporarily tightened during installation, making it easy to operate and significantly improving the efficiency of installing roll screens, etc. Various effects such as the screen being reliably wrapped around the roller pipe and the ability to reliably prevent gravity balls from flying out can be obtained.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is a partially omitted front view of the roll screen installed on the bracket, Figure 2 is a partially omitted vertical sectional view of the spring motor, and Figures 3 and 4 are the partially omitted front view of the spring motor.
These are cross-sectional views taken along the - arrow line in the figure. Fig. 3 shows the coil spring in a temporarily locked state with the first twist, Fig. 4 shows the temporarily released state of the coil spring with the first twist, and Fig. 5 shows another example of the setter. FIG. A... Spring motor, B... Setter,
S... Screen, 1... Roller pipe, 2...
...Left side bracket, 3...Axis pin, 4...Stator, 5...Rotator, 6...Button, 7
...Pillow, 8...Outer core, 9...Coil holder, 10...Coil spring, 11...
Inner core, 12...Inner core bush,
13... Gravity ball, 14, 15... Fitting part, 16... Fitting groove, 17, 18... Fitting part,
19...stopper, 20, 21...recess, 22
... Setter body, 23 ... Opening, 24, 25
...Protrusion, 26...Small protrusion, 27, 28, 35,
36... protrusion, 29, 30... large protrusion, 31...
Connecting piece, 32... Stop pin, 33... Connecting plate, 34
...stop hole.

Claims (1)

[Scope of utility model registration request] It has a coil spring for initial twisting and is installed at the left end of the spring motor built into the roller pipe for winding the roll screen, and has a pair of fitting parts that fit the gravity ball to the upper and lower outer surfaces of the left end of the spring motor. a stator for holding the left side bracket provided substantially opposite to each other, and a pair of fitting portions rotatably supported on the outer surface of the stator and into which gravity balls are fitted corresponding to the fitting portions of the stator;
A fitting groove recessed in the outer peripheral surface of the fitting groove is provided continuously to the fitting part, and a stopper is provided protruding between one side of the fitting groove, and a stopper is provided on the other side of each fitting part of the fitting groove. A rotator having two recesses arranged at appropriate intervals between them, and a pair of protrusions near both sides of the opening on the inner surface of the approximately C-shaped setter body which is rotatably fitted into the fitting groove of the rotator. A small protrusion is provided on the protrusion on one side, and a pair of elastic F-shaped protrusions for preventing the gravity ball from flying out is arranged symmetrically near each protrusion on the inner surface of the setter body. The setter has two large protrusions arranged at appropriate intervals between each protrusion on the inner surface of the setter body, and a gravity ball is fitted into each fitting part of the stator from the fitting part of the rotator. The first roll screen, etc., characterized in that the setter is rotatably fitted into the fitting groove of the rotator, and the protrusions are rotatably fitted to each fitting part so that they can be opened and closed. Winding/twisting temporary fixing and clutching device.