JPH11117645A - Roll screen first winding adjustment device - Google Patents

Abstract

(57) [Summary] [Problem] To be able to perform initial winding adjustment from the side of a side plate and to remove a winding pipe from a side plate even when a roll screen is installed in a window frame or in a continuous window state. Be able to adjust the initial winding. An opening (14a) provided in a side plate (14).
One side is exposed from the side plate 14
An adjusting drum 28 rotatably mounted on the adjusting drum 28 and rotatable through the opening; an adjusting dial 30 mounted on the outer periphery of the adjusting drum 28 and disposed between the winding pipe 16 and the side plate 14; A drive drum 32 connected to one end of the drive drum 20 for transmitting the rotation of the adjustment drum 28 to the spring 20; a clutch spring 38 provided on the inner periphery of the adjustment dial 30 for preventing transmission of rotation from the spring side to the adjustment drum 28; Is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll screen initial winding adjusting device for adjusting an initial winding of a spring housed in a winding pipe of a roll screen.

[0002]

2. Description of the Related Art Conventionally, an apparatus for adjusting the initial winding of a roll screen of this type is disclosed, for example, in Japanese Utility Model Publication No. 61-32076.
And Japanese Utility Model Publication No. 6-17995. Japanese Unexamined Utility Model Publication No. 61-32076 discloses a brake drum, which can rotate a stator attached to one end of a coil spring from the outside.
A brake mechanism consisting of a brake spring, a sector, and an adjustment ring is provided between the bracket (side plate) and the take-up pipe, and the adjustment of the spring is adjusted by turning the adjustment ring while the take-up pipe is attached to the bracket. Can be done. In addition, 6-1799
In the device described in Japanese Patent Publication No. 5 (1999) -1999, an adjusting device attached to one end of a coil spring is housed in one end of a winding pipe, and a base end of an adjusting shaft for operating the adjusting device is attached to a side surface of a mounting bracket (side plate). The initial winding of the spring can be adjusted by exposing and rotating the adjustment shaft from the base end using a general-purpose tool.

[0003]

However, in order to adjust the initial winding of the spring, it is usually necessary to turn the adjusting portion about 10 to 20 times, depending on the product size. In Japanese Utility Model Publication No. 61-32076, when an adjustment ring having a small width of about 35 to 40 mm is rotated about 10 to 20 times, a large amount of momentum is required and there is a problem that operability is not good. Also, in Japanese Utility Model Publication No. 6-17995, the adjustment axis is set to 1 with a general-purpose tool.
It is relatively easy to rotate it about 0 to 20 times, but when a roll screen is installed in a window frame or connected in a row, if a first winding adjustment must be made after installation, a general-purpose tool can not be inserted. In addition, there is a problem that the roll screen must be removed from the mounting position, which is troublesome. Further, in Japanese Utility Model Publication No. 6-17995, the length of the winding pipe and the distance between the pair of mounting brackets are made substantially equal to each other so that there is almost no gap between both ends of the screen and the mounting brackets, thereby reducing the screen size. Although the configuration is such that light leakage from both ends is prevented, when the screen is distorted, the end of the screen may be bent and damaged by the side of the mounting bracket being pushed. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and the invention according to Claims 1 and 2 can adjust the initial winding from the side of the side plate, and the roll screen can be in the window frame or in the continuous window state. It is an object of the present invention to provide an initial roll adjusting device for a roll screen that can adjust the initial winding without removing the roll screen even if the roll screen is attached, and that can prevent damage to the screen due to turbulence in the winding of the screen. Aim.

[0004]

According to the first aspect of the present invention, a spring (20) is provided inside a winding pipe (16) rotatably supported by a side plate (14). The roll screen initial winding adjusting device (2) for adjusting the initial winding of the spring (20) of the roll screen for winding the screen (18) around the winding pipe (16) by the accumulating force of the spring (20).
2) is rotatably attached to the side plate (14) such that one end is exposed from an opening (14a) provided in the side plate (14), and the opening (1
4a) an adjustment drum (28) rotatable from the position, and an adjustment drum (28) attached to the outer periphery of the adjustment drum (28),
6) an adjusting dial (30) disposed between the side plate (14) and a driving drum (30) connected to one end of the spring (20) and transmitting the rotation of the adjusting drum (28) to the spring (20). 32) and adjustment dial (30)
The adjustment drum (2
8) Clutch spring (38) for preventing transmission of rotation to
And the following.

According to a second aspect of the present invention, in the first aspect of the present invention, a portion of the adjustment dial (30) attached to the outer periphery of the adjustment drum (28) is formed in an inner circumferential direction together with the adjustment drum (28). A projecting projection (39) is formed, and the projection (39) is positioned in a notch (32b) formed in a flange (32a) formed on the outer periphery of the drive drum (32). The two ends (38a) of the clutch spring (38) are respectively arranged between the projection (39) and the notch (32b), and the adjustment dial (30) is arranged.
And the rotation of the adjusting drum (28) is controlled by the clutch spring (38).
And transmitted to the drive drum (32) via the

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a roll screen initial winding adjusting device according to the present invention will be described below with reference to FIGS. FIG. 1 shows one end of a roll screen to which an initial winding adjustment device for a roll screen of the present invention is attached. The roll screen 10 includes a pair of side plates 14 attached to a set frame 12 fixed to a window frame or the like (only one side plate 14 is shown).
A winding pipe 16 rotatably supported at both ends by a pair of side plates 14, a screen 18 having one end connected to the winding pipe 16, wound on the winding pipe 16, and hung so as to be able to be unwound. , Is provided. A coil spring 20 is housed in the winding pipe 16, one end of which is indirectly fixed to the side plate 14 via an initial winding adjusting device 22, and the other end of which is fixed to the winding pipe 16 although not shown. You. And the winding pipe 16
Is rotated in the screen unwinding direction, the other end of the coil spring 20 rotates integrally with the winding pipe 16 to accumulate energy, and when the rotation of the winding pipe 16 in the winding direction is allowed, the coil spring 20 is rotated. Winding pipe 1 with 20 accumulators
6 rotates in the winding direction to wind up the screen.

The initial winding adjusting device 22 includes a clutch drum 26 fixed to the side plate 14 by rivets 24, 24, an adjusting drum 28 supported by the clutch drum 26, and a winding attached to the outer periphery of the adjusting drum 28. An adjustment dial 30 disposed between the take-off pipe 16 and the side plate 14; and a drive drum 32 which is non-rotatably connected to a plug 34 to which one end of the coil spring 20 is fixed by a shaft 36 having a non-circular cross section. A clutch spring 38 provided on the inner peripheral side of the adjustment dial 30;
Is mainly provided. Boss part 26c of clutch drum 26
(See FIG. 4), a receiving ring 40 is supported.
Flange 40a of receiving ring 40 and clutch drum 26
A C-ring 42 is fitted between the protrusions 26b (see FIG. 1) protruding from the inside of the receiving ring 40, and the driving drum 32 and the adjusting drum 28 are screwed by screws 44, 44 screwed into screw holes (not shown) of the receiving ring 40. Together, the drive drum 32 and the adjustment drum 28
It is rotatably mounted on. However, adjustment drum 2
The hole of the adjusting drum 28 through which the screw 44 penetrates is a long hole so that the screw 8 can rotate independently by a small amount.

The adjusting drum 28 is provided with the clutch drum 26
Has an adjustment shaft 28a at one end that is exposed through an opening 14a provided in the side plate 14 through the center hole 26a. The exposed surface 28b of the adjustment shaft 28a is connected to a general-purpose tool such as a screwdriver (an example in the figure). Can be fitted with a Phillips screwdriver. Further, as shown in FIG. 5, the adjusting drum 28 has an uneven portion 28 on its outer periphery.
c, on the other hand, the adjustment dial 30 has a mounting portion 30a protruding on the inner peripheral side, and the adjustment dial 30 is adjusted by fitting the mounting portion 30a with the uneven portion 28c. It is integrally attached to the drum 28. The mounting portion 30a of the adjustment dial 30 is provided with a projection 39 projecting inwardly along with the uneven portion 28c of the adjustment drum 28.
Is formed. A flange 32a is formed on the outer periphery of the drive drum 32, and the flange 32a is
8 is arranged on the outer peripheral side. Notch 32b in flange 32a
Are formed, and the projection 39 is positioned in the cutout 32b. Further, both ends 38a, 38a of the clutch spring 38 are arranged on both sides of the projection 39. When the adjustment dial 30 or the adjustment drum 28 is rotated,
Since the protrusion 39 pushes one of the clutch springs 38a in a direction in which the clutch spring 38 is loosened, the clutch spring 38a rotates together with the adjustment dial 30 or the adjustment drum 28, rotates the drive drum 32, and rotates the coil spring 20 via the plug 34. One end can be rotated. On the other hand, even when the drive drum 32 is rotated, the flange portion 32a pushes the clutch spring 38a in the tightening direction, so that the clutch spring 38 is fastened to the clutch drum 26, the rotation of the drive drum 32 is prevented, and the adjustment dial 30 and the adjustment The rotation is prevented from being transmitted to the drum 28 from the coil spring 20 side.

In the roll screen initial winding adjusting device configured as described above, in order to adjust the accumulating force of the coil spring 20 in the state where the screen 18 is wound up to the uppermost position, it is necessary to adjust Drum 2
8 or the adjustment dial 30 can be operated. That is, in order to operate the adjustment drum 28, a general-purpose tool such as a screwdriver is inserted into the exposed surface 28b of the adjustment drum 28 and rotated in a predetermined direction. Thereby, the drive drum 32 rotates by the rotation of the adjustment drum 28,
One end of the coil spring 20 is rotated so that the initial winding of the coil spring 20 can be adjusted. In order to operate the adjustment dial 30, if the adjustment dial 30 is directly rotated by hand, the drive drum 32 rotates, and similarly, the initial winding of the coil spring 20 can be adjusted.

At the time of initial winding adjustment before product shipment, adjustment can be efficiently performed with a small amount of momentum from the adjustment drum 28 using a general-purpose tool such as a screwdriver. In order to make the opening 14 in the side plate 14, use a general-purpose tool such as a screwdriver.
a where the adjustment drum 28 may be rotated from a, or where a general-purpose tool such as a screwdriver cannot be inserted;
For example, in the case of being installed in a window frame or a case where the roll screens are arranged side by side to form a continuous window, insert a hand between the side plate 14 and the winding pipe 16 and rotate the adjustment dial 30. Can be adjusted. Thus, the adjustment dial 30 and the adjustment drum 2
8 can be used in the right place at the right place. The adjustment dial 30 is located between the side plate 14 and the take-up pipe 16 and also functions as a spacer for both. Even when the screen 18 is wound up when the screen 18 is wound up, Since the distorted portion escapes to the adjustment dial 30, the screen 18 does not hit the side plate 14, and the end of the screen 18 is not bent and damaged.

[0011]

As described above, according to the first aspect of the present invention, the initial winding of the spring can be adjusted by rotating the adjusting drum from the side of the side plate. At the same time, the initial winding of the spring can also be adjusted by rotating the adjustment dial arranged between the winding pipe and the side plate. It can be a good thing. For example, when it is desired to adjust efficiently with a small amount of momentum, the adjustment drum can be operated with a general-purpose tool, and when the roll screen is mounted in the window frame or in a continuous window, the adjustment dial is operated by turning the adjustment dial. can do.

Furthermore, since the adjusting dial is located between the side plate and the winding pipe and functions as a spacer for both, even if the screen is turbulent, the turbulent portion may be removed. By escaping to the adjustment dial portion, the screen does not hit the side plate, and the end of the screen can be bent and prevented from being damaged. According to the second aspect of the present invention, the portion of the adjustment dial attached to the outer periphery of the adjustment drum forms a protrusion projecting in the inner circumferential direction together with the adjustment drum, so that either the adjustment dial or the adjustment drum can be used. Even when operated, the rotation can be transmitted to the drive drum via the clutch spring.

[Brief description of the drawings]

FIG. 1 is a half sectional view showing one end of a roll screen to which an initial winding adjusting device for a roll screen of the present invention is attached.

FIG. 2 is a side view of the roll screen of FIG.

FIG. 3 is an exploded perspective view of the initial winding adjusting device for the roll screen of FIG. 1;

FIG. 4 is a sectional view taken along line 4-4 in FIG. 1;

FIG. 5 is a perspective view showing an adjustment dial and an adjustment drum of FIG. 1;

[Explanation of symbols]

 14 side plate 14a opening 16 take-up pipe 18 screen 20 spring 22 initial winding adjustment device 28 adjustment drum 30 adjustment dial 32 drive drum 32a flange 32b cutout 38 clutch spring 38a both ends 39 convex

Claims (2)

[Claims] A spring (2) is provided inside a winding pipe (16) rotatably supported by a side plate (14).
Roll screen initial winding adjusting device for adjusting the initial winding of the spring (20) of the roll screen for storing the screen (18) on the winding pipe (16) by the storing force of the spring (20). (22), which is rotatably attached to the side plate (14) such that one end is exposed from an opening (14a) provided in the side plate (14), and is rotatable from the opening (14a). An adjusting drum (28), an adjusting dial (30) attached to the outer periphery of the adjusting drum (28) and disposed between the winding pipe (16) and the side plate (14), and a spring (20). Adjustment drum (2
A driving drum (32) for transmitting the rotation of 8) to the spring (20); and a clutch spring provided on the inner peripheral side of the adjustment dial (30) for preventing transmission of rotation from the spring side to the adjustment drum (28). (38) An initial roll adjusting device for a roll screen, comprising: 2. An adjusting drum (2) of an adjusting dial (30).
The part attached to the outer periphery of 8) is the adjustment drum (2
8) together with a projection (39) projecting in the inner circumferential direction, and a flange (3) formed on the outer circumference of the drive drum (32).
The protrusion (39) is positioned in the notch (32b) formed in 2a), and both ends (38a) of the clutch spring (38) are located between the protrusion (39) and the notch (32b). ) And adjust dial (30)
And the rotation of the adjusting drum (28) is controlled by the clutch spring (38).
2. A device for adjusting initial winding of a roll screen according to claim 1, wherein said device is transmitted to a drive drum via a drive roller.