JPS6351590A - Roll blind - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a roll blind suitable for a blackout curtain, and more specifically, the present invention relates to a roll blind suitable for a blackout curtain. It concerns what is not there.

[Prior Art] Roller blinds, which are used as blackout curtains to darken rooms by blocking light from windows during the day to project slides, OHPs, etc., are equipped with a falling object that has good light-blocking properties, and also provide protection from the surroundings of the falling object. Light leakage must also be prevented.

Roller blinds used as blackout curtains were first introduced in 1982.
As shown in FIG. 7, the roll blind is disclosed in Japanese Patent Application No.
It had a rectangular frame body consisting of both side frames 12 and a lower frame 13. The frame body is fixed around a window or the like, the roll lO is installed in the upper frame, the fallen object 15 is pulled out from the opening of the upper frame 11, and the fallen object 15 is put into the lower frame 13 from the opening of the lower frame 13.
Both edges of the frame were inserted through the openings of the U-shaped cross sections of the side frames 12 to prevent light from leaking around the fallen object 15. Fallen body 1
When the frame 5 is under tension, the edges on both sides are in close contact with the inner surface of one of the openings of the frame 12 on both sides, so light shielding is good. However, if the edges become loose and wrinkled, there will be areas where they do not fit tightly and light will leak from there. Therefore, the tension of the falling body 15 is a necessary condition.

[Problems to be Solved by the Invention] As described above, the lower frame of conventional blackout blinds must be fixed to a window, etc., but it is impossible to attach the lower frame to the entrance/exit of a room or a sweeping window. In addition, when a lower frame is installed, the cross-sectional area of the window etc. becomes smaller, so the lower frame is often not attached.If there is no lower frame, the weight bar should be in contact with the bottom of the window etc. when the object falls. must be made tense, but such a thing is virtually impossible;
Either the weight bar is located slightly above the bottom surface, or the weight bar reaches the bottom surface and the falling object becomes loose. In either case.

A problem arises in that light leaks in and the darkroom effect is impaired.

The present invention has been made in order to solve the above problems, and its purpose is to provide a roll blind that does not have the risk of light leaking in even if a lower frame is not attached to the window etc. .

[Means for solving the problem] In order to achieve the above object, the feature of the present invention is that a cover that overlaps the weight bar of the falling body of the roll blind is suspended vertically or swingably. be.

[Operation] Since the cover hangs down from the weight bar, when the falling object is lowered, it reaches the bottom of the window etc. before the weight bar.

Then, as the weight bar is lowered, the cover slides or swings upward relative to the weight bar. In this state, if you stop lowering the falling object and make it tense, the cover will come into close contact with the bottom of the window, etc., and the falling object will be tensed and will come into close contact with the inner surfaces of the opening on both sides of the frame and the top cover. If the range of vertical sliding or swinging of the cover relative to the weight bar is set long enough to prevent light from leaking into the room from the surroundings, it is also possible to absorb the elongation of a falling object during use.

[Example] The roll blind of the present invention will be specifically described based on an example shown in the drawings.

As shown in FIG. 1, the upper frame 11 of the roll blind is screwed to the inner upper surface 21 of an opening such as a window, and the side frames 12.12' are screwed to the 100-yen side surfaces 22.22'.

The width of the upper frame 11 is equal to the inside of the opening, and the width of both side frames 12.1
The back surface of 2' is in close contact with the back surface of the upper frame 11, and the lower surface thereof is in close contact with the inner lower surface 23 of the opening.

The roll lO that wraps around the fallen object 15 is attached to the left and right brackets 14.1.
4', and the brackets 14 and 14'' are screwed to the inner and lower surfaces 23 of the opening.The fallen body 15 unwound from the roll 1G is made of a material with good light-shielding properties.Both side edges of the fallen body 15 are The falling body 15 enters through the slits in the side frames 12, 12' having a letter-shaped cross section, and rises and lowers therein.A cover 20 is provided on the lower edge of the falling body 15.

As shown in FIG. 2, a locking plate 16 is bonded to the lower edge of the falling body 15, and the locking plate is inserted into a width bar 18 having a rectangular cross section and having a slot 7) 17 on its upper surface.

The weight bar 18 also has a slit 21 on the top surface,
It is inserted into a cover 20 having a vertically long rectangular cross section. The falling object 15 passes through the slit 17 of the weight bar 18 and the slit 21 of the cover 20. The weight bar 18 and the cover 20 are vertically slidable relative to each other. The weight bar 18 and the cover 20 are attached to the side frames 12.12 as shown in FIG.
′ is slightly smaller than the interval between ′.

The weight pad and cover need not be limited to those shown in Figure 2; as shown in Figure 3, the cross section of the weight pad 18 is a rectangle divided into upper and lower sections, and a locking plate attached to the lower edge of the falling body 15 is attached to the upper side. 16 may be inserted, and a T-shaped (or T-shaped) cover 20 may be vertically slidably suspended from a slit on the lower surface of the lower side.Alternatively, as shown in FIG. A bar with a single-shaped cross section is suspended from the center of the bottom surface of a weight par 18 with a rectangular cross section into which a mooring plate 16 attached to the bar is inserted, and a cover 20 with a rectangular cross section with a slit provided on the top surface of the bar is slidable up and down. The cross section need not be limited to a rectangular shape or a shape derived therefrom;
As shown in the figure, a weight par 18 having a circular cross section may be inserted into a cover 20 having an oval cross section provided with a slot 7) 21 on the upper surface so as to be vertically slidable.
The locking plate 1G is inserted between the partitions of the weight par 18. Furthermore, as shown in Figure 6, weight par 1
8 may be provided with an arc-shaped 1lv119 slightly larger than a semicircular cross section, and the circular head 22 of the cover 20 having a three-figure cross section may be fitted into the groove. In this case, the three-figure cover 20
can swing up and down.

In FIG. 1, when the falling object 15 descends, first the cover 2
0 reaches the inner lower part 23 of the opening. Next, the weight par 18 slides or rotates downward relative to the cover 20 (Fig. 6), but the falling object 15 stops descending before reaching the lower limit of its sliding or rotation. maintain tension. When the fallen object 15 is tensed, the edges of both sides come into close contact with the inner surfaces of the slits of the side frames 12, 12', so that light is transmitted to the side frames 12, ! 2' and the falling object 15 from entering the room through the gaps on both sides, and the inner lower part 23 of the opening.
The cover 20 is in close contact to prevent light from leaking. Since the cover 20 and the weight par 18 overlap each other, no light enters between them.

Although not shown, if a foamed polystyrene material with good cushioning properties is attached to the portion of the cover 20 in contact with the inner lower part 23 to improve adhesion, it is possible to prevent light from leaking through minute gaps.

When lowering of a falling object is stopped using the lower limit switch in an electric roll blind, the cover activates the lever switch before the falling object reaches the bottom surface of the window, etc., so the falling object always stops under tension and sag unsightly. You can also get the effect that there is no such thing. Moreover, since the cover 20 also has a buffering effect, the roll blind is less likely to be damaged by the shock of hitting an obstacle.

[Effects of the Invention] As mentioned above 1. In the roll blind of the present invention, a cover of the same width hangs down from the weight par on the lower edge of the falling object so that it can slide vertically or swing freely, so that the weight par can be attached to the inner lower part of the window, etc. Even if the falling object is stopped with tension before landing, the cover hanging from the weight par will stick to the inner lower part of the window etc. Therefore, even if there is no need to provide a lower frame for drawing the weight par into the inner lower part of a window, etc., the tensile falling object and the cover that is tightly attached to the inner lower part prevent light from leaking from around the falling object, so the roll of the present invention Blinds are not only suitable for blackout devices for entrances and exits where a lower frame cannot be attached, but also for doorways and sweeping windows.
Even in the case of a window to which a lower frame can be attached, there is no need to provide a lower frame to narrow the opening area of the window, which is a special effect not found in conventional windows. Another advantage of the roll blind of the present invention is that it is resistant to shocks because the shocks are absorbed by the cushioning action of the cover.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a roll blind according to an embodiment of the present invention, Fig. 2 is a vertical cross-sectional view of the main part, and Figs. 3 to 6 are Fig. 2 of other embodiments. FIG. 7 is a side sectional view of a conventional blackout blind. In the figure, numeral 10 is a roll, 11 is a top layer, 12.1
2' is the side frame, 14.14' is the bracket, 15 is the falling body,
1st indicates weight par, 20 indicates cover, and 21 indicates slit.

Claims (1)

[Scope of Claims] 1) A roll rotatably supported by left and right brackets, a curtain body that is wound with one end fixed to the roll, and a weight bar attached to the other end of the curtain body. 1. A roll blind comprising: a cover that overlaps the weight bar and is attached so as to be vertically slidable or swingable. 2) The roll blind according to claim 1, wherein the weight bar has a slit in its lower surface, and a cover having a T-shaped or I-shaped cross section is slidably suspended from the slit. 3) A roll blind according to claim 1, characterized in that a weight bar with a rectangular cross section is vertically slidably inserted into a vertically long cover with a rectangular cross section and a slit in the upper surface. 4) The roll blind according to claim 1, wherein a cover is connected to the bottom of the weight bar having an I-shaped cross section through a slit in the upper surface of the weight bar so as to be vertically slidable. 5) The roll blind according to claim 1, wherein a weight bar having a circular cross section is inserted into a cover having an oval cross section and a slit in the upper surface so as to be slidable up and down. 6) The roll according to claim 1, wherein a groove having a nearly circular cross section is provided in the bottom of the weight bar, and a circular head of a cover having a J-shaped cross section is rotatably fitted into the groove. BLIND.