JPH0446064Y2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) This invention relates to a gap prevention device for shielding a gap that occurs between the winding shaft of a roll blind and the upper frame of a window.

(Prior Art) Conventionally, in a roll blind, as shown in FIGS. 5 and 6, for example, a winding shaft 2 on which a screen 1 is wound is rotatably supported near the upper frame W of a window.
The screen 1 was pulled out and wound up by operating the lower end of the screen 1 and rotating the take-up shaft 2.

(Problem to be solved by the invention) In the above conventional roll blind, the sixth
As shown in the figure, as the screen 1 is pulled out, the screen winding diameter of the winding shaft 2 gradually becomes smaller and a gap T is created between the upper frame W and the winding shaft 2, so the screen 1 is moved to the lowest limit. There was a problem in that even if it was pulled down to a certain level, outside light leaked through the gap T.

Structure of the invention (Means for solving the problems) In order to solve the above problems, this invention has the purpose of fixing the winding shaft 15 on which the screen 17 is wound on the bracket 1.
2 rotatably supported near the upper frame W of the window,
Guide rods 16 and 2 are located at the upper end of the space S formed above the winding shaft 15.
1 is provided parallel to the winding shaft 15, and the screen 17
This device employs a gap prevention device for a roll blind, which is hung from the guide rods 16 and 21 and hung down.

(Function) By the above means, the screen 17 is moved to the guide rod 16,
21 hangs down from between the winding shaft 15 and the upper frame W, so even if the screen winding diameter of the winding shaft 15 changes, the gap between the upper frame W and the guide rods 16 and 21 is always constant. becomes.

(Example) An example embodying this invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the frame 11 of the roll blind is fixed to the upper frame W of the window by means of fixtures (not shown), and inverted L-shaped brackets 12 are attached to the left and right ends of the frame 11 by screws 13, respectively. Fixed. A square bar-shaped support shaft 14 is supported and fixed between both brackets 12, and a winding shaft 15 is rotatably supported on the support shaft 14 via a torsion coil spring and a clutch (none of which are shown). And frame 11
A space S is formed between the winding shaft 15 and the winding shaft 15. At the front part (indoor side) of the bracket 12, a round bar-shaped guide rod 16 is attached to the winding shaft 15 at a position above the winding shaft 15, that is, close to the bottom surface of the frame 11.
is rotatably supported parallel to the That is, the guide rod 16 is arranged parallel to the winding shaft 15 at the upper end of the space S formed above the winding shaft 15.

The winding shaft 15 is provided with a screen 17 made of cloth.
One end of the screen 17 is fixed, and when the winding shaft 15 is rotated in the direction of arrow A in FIG. 1 by the biasing force of the torsion coil spring, the screen 17 is wound around the winding shaft 15. Also, screen 1
The other end of 7 is hung on guide rod 16 and then attached to guide rod 1.
It hangs downward from 6. A bottom rail 18 is suspended from the lower end of the screen 17, and when an operating string 19 suspended from the bottom rail 18 is pulled downward, the take-up shaft 15 resists the biasing force of the torsion coil spring. The screen 17 that has been wound up can be pulled out downward.

Next, the operation of the roll blind constructed in this way will be explained.

When the screen 17 is pulled downward by the operation string 19 against the biasing force of the torsion coil spring, the screen 17 is sequentially pulled out downward via the guide rod 16. After lowering the screen 17 to a desired height, the screen 17 is slowly raised using the biasing force of the torsion coil spring, and the clutch is activated to hold the screen 17 in its predetermined position. In this state, the gap between the winding shaft 15 and the bottom of the frame 11 is
It is shielded by a screen 17 hung on the screen.

When the screen 17 is pulled slightly downward from this state, the clutch operation is released, and when the operating string 19 is released in this state, the winding shaft 15 is rotated by the biasing force of the torsion coil spring, and the screen 17 is rotated.
7 is rolled up.

In this way, the roll blind of this example is
Since the gap formed between the bottom surface of the frame 11 and the winding shaft 15 can be covered by the screen 17, leakage of external light through the gap can be almost prevented regardless of the amount of pullout of the screen 17. At the same time, since the guide rod 16 is provided in front of the winding shaft 15 (on the indoor side) and the screen 17 is suspended directly below from the guide rod 16, the entire lower part of the upper frame W of the window can be covered with the screen 17. Also, guide rod 1
6 is rotatably provided, so screen 1
By rotating the guide rod 16 as the screen 7 moves, the screen 17 can be pulled out and rolled up smoothly.

Note that this invention is not limited to the above embodiment; for example, in the above embodiment, the guide rod 16 is provided at a position in front of the winding shaft 15 (on the indoor side), but it is not limited to the front position; It may be arranged at a rear position with respect to the winding shaft 15, or directly above the winding shaft 15, as shown in FIG. Further, although the guide rod 16 is supported by the bracket 12 in the above embodiment, as shown in FIG. You can.

Further, in the above embodiment, the bracket 12 is fixed to both sides of the frame 11 fixed to the upper frame W of the window, but there is a structure in which the bracket 12 is directly fixed to the upper frame W of the window without using the frame 11. You can also use it as In this case, since a guide rod 16 is installed between both brackets 12, the guide rod 16 allows the bracket 1 for installing the roll blind to be
2 intervals can be set. Therefore, the positioning tape conventionally used to set the distance between the brackets 12 can be eliminated.

Effects of the invention As detailed above, this invention can reduce the gap created between the upper frame W and the winding shaft 15 using the screen 17, thereby reducing the leakage of external light from the gap. Demonstrate the best possible effects.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view of a roll blind embodying this invention, Fig. 2 is a perspective view of the same roll blind, Figs. 3 and 4 are sectional and perspective views showing another embodiment, and Fig. 5 FIG. 6 is a schematic diagram showing a conventional roller blind. Winding shaft...15, guide rod...16, 21, screen...17, upper frame...W, space section...S.

Claims (1)

[Scope of utility model registration request] A winding shaft 15 on which the screen 17 is wound is rotatably supported near the upper frame W of the window by a bracket 12, and the upper end position of the space S formed above the winding shaft 15 is determined. guide rod 1
6 and 21 are provided parallel to the winding shaft 15, and a screen 17 is hung from the guide rods 16 and 21 so as to hang down.