JPH10325286A - Roll blind - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the increase of the diameter of a winding body at the time of sheet rolling and dispose it in a narrow space by winding an endless belt between a pair of rollers and rolling a flexible sheet by the endless belt. SOLUTION: Rotatable rollers 20, 20 rotated and urged by a spring 35 in one direction are disposed in a recess part formed in the upper stile 4 of a fitting in parallel, and synchronization and rotation can be performed by an endless belt 29. The upper end of a flexible sheet-like cover 34 is fixed on an endless belt 33 mounted between the rollers 20, 20, and the elastic stopper of a bar mounted on the lower end of the cover 34 is friction-locked on the inner face of a vertical stile 3 against urging force of the spring 35 to constitute a roll blind. Thereby when the elastic stopper is taken out from the vertical stile 3, the cover 34 is wound around the endless belt 33 by the urging force of the spring 35. Thus, even if the diameter of the roller 20 is small, the diameter of the winding body is not increased excessively, and the roller of the roll blind can be arranged in a narrow recess part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a roll blind.

[0002]

2. Description of the Related Art Conventionally, the following types of roll blinds are known. That is, there is known a roller having one roller whose axis is horizontal and a flexible sheet-like cover having one end fixed to the roller.

[0003]

Disadvantages of the prior art The conventional roll blind has the following disadvantages. That is, the length of the cover that one roller can take up by one rotation is determined by the diameter of the roller, and when the length of the cover is long, the cover is wound around the roller multiple times. As a result, when the roller has completely wound up the cover, the entire diameter of the cover becomes large (long), and the front and rear lengths of the roll blind are long.

[0004]

The present invention employs the following means to solve the above-mentioned drawbacks. The invention according to claim 1 includes a pair of rollers having axes parallel to each other, an endless band stretched over the rollers, and a flexible sheet-like cover having one end fixed to the endless band. It is.

[0005]

The first aspect of the present invention has the following functions. Because the cover is wound around the endless belt, that is, the length of the cover that can be wound by one rotation is longer than the length of the cover that one roller can take up by one rotation. Since the cover is wound around an endless belt which can be used, the front and rear length of the roll blind can be shortened as compared with a conventional roll blind having only one known roller.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. In this description, “front” refers to the front side of FIG. 1, “back” refers to the back side, “left” refers to the left side in FIG. 1, and “right” refers to the right side in FIG.

The fitting 1 includes left and right frames 3, an upper frame 4 provided above the left and right frames 3, a lower frame 5 provided below the left and right frames 3, and these frames 3, 4, and 5. And a center plate 7 fitted to a frame 6 constituted by

The above-mentioned fitting 1 is openable or closable on the inside (room side) inside a fitting which is provided in an opening formed on the outer wall of the building and which is resistant to rain and wind (hereinafter referred to as an outer fitting). (Hereinafter referred to as inner fitting).

At the center of the left and right frames 3 in the height direction, a horizontal rail 1
0 (see FIG. 2), the horizontal plate 10 divides the central plate 7 into upper and lower parts, and the upper part 7a of the central plate 7 is formed as a light-transmitting plate with low transparency as a whole. The lower portion 7b is a transparent plate. As the light-transmitting plate having low transparency as a whole, a lace curtain is sandwiched between two transparent glass plates or a transparent synthetic resin plate to form a single plate, or a transparent glass plate or a transparent synthetic resin plate is opaque. A board or the like in which a transparent pattern is drawn with a simple pattern is used.

A vertically extending guide groove 11 (see FIG. 7) is formed at the mutually facing edges of the left and right frames 3.
Guided by the guide grooves 11, the elevating plate 12 having a height L of about half the height of the central plate 7 and a width in the left-right direction M is vertically movable with respect to the fitting 1 (see FIG. 1). . In addition,
The lifting plate 12 can be stopped at a desired height position by utilizing a frictional force or the like. The upper edge of the elevating plate 12 moves up and down within the range of the vertical length N in FIG. The elevating plate 12 is composed of a frame 13 and a light-transmitting plate which is fitted into the frame 13 and has low transparency as a whole (the upper portion 7
a) made of a material similar to the material a). With such a configuration, when the lifting plate 12 is raised to the uppermost position, external light can be taken into the room abundantly through the lower portion 7b of the center plate 7. On the other hand, when the elevating plate 12 is lowered to the lowermost position, external light can be introduced into the room while the line of sight from the outside is blocked by the plate 14 and the upper portion 7a.

The upper frame 4 is provided with a horizontally long recess 17 which opens toward the center of the fitting 1, that is, opens downward, and a pair of upper and lower hollow portions of a roll blind 19 are formed in the recess 17. Roller 20 is housed as described in detail below. As shown in FIG. 3, the left and right frame 3
Depressions 21 are formed in portions facing the recesses 17, bearings 22 are fixed to these depressions 21 with nails, screws, and the like. And it is handed over without rotation. Note that the upper support shaft 23 is vertically movable with respect to the bearing 22. The both ends of the upper support shaft 23 are mounted on a shaft support member 24 which can move up and down with respect to the bearing 22 as shown in FIG. The lower surface of the shaft support member 24 is in the shape of a "H", and a front-rear moving body 25 having an upper surface in the shape of a "H" is attached to the bearing 22 so as to hit the lower surface of the "H". The bearing 22 is movably provided.
Is screwed onto a screw 26 which is rotatable on the bearing 22 but does not move back and forth and has its axis centered in the front-rear direction. With such a configuration, the front-rear position of the front-rear moving body 25 is adjusted by rotating the screw 26 so that the upper surface of the front-rear moving body 25 and the lower surface of the shaft support member 24 have a "H" shape. By adjusting the contact position, the height position of the shaft support member 24 is adjusted,
Ultimately, the height position of the upper support shaft 23 can be adjusted. A through hole 27 (see FIG. 4) for exposing the head of the screw 26 toward the front is formed in the frame 3.

The rollers 20 are rotatably fitted to the upper and lower support shafts 23. Wheels 28 for a timing belt are fixed to the ends of the rollers 20, and endless belts 29 made of a timing belt are fixed to the wheels 28. The roller 20 is rotated so as to rotate synchronously. An endless belt 33 is stretched over the roller 20. By adjusting the vertical position of the upper support shaft 23 as described above, the tension of the endless belt 33 can be adjusted. The upper end of a flexible sheet-like cover 34 is fixed to the endless belt 33. The cover 34 is made of a material that makes the inside of the room visible only by shadows from the outside even if the room is bright at night.

As shown in FIG. 3, a spring 3 for urging the endless belt 33 to rotate in a direction in which the cover 34 is wound up.
5 is associated with the roller 20. That is, the spindle 2
The left end of the spring 35 fitted to the third 3 is fixed to the roller 20, and the right end is fixed to the non-rotating support shaft 23. The spring 35 has a slight torsion force in the direction in which the cover 34 is wound up even when the endless band 33 completely winds the cover 34, and the cover 34 is wound so that the cover 34 is unwound from the endless band 33. If you pull it down, it will be twisted and cover 3
It is designed to store the power to rewind the 4. As a result, when the force is removed from the cover 34, the cover 34 is wound around the endless belt 33 by the force of the spring 35.

As shown in FIG. 6, a bar 37 (having a drawstring not shown) is attached to the lower end of the cover 34, and elastic stoppers 3 are attached to the left and right ends of the bar 37.
The bar 34 is positioned between the left and right frames 3 with the elastic stoppers 38 applied to the left and right frames 3 so as to cover the spring 34 against the force of the spring 35.
Can be held at a predetermined rewind position. On the other hand,
When the bar 37 is removed from between the left and right frames 3, the cover 34 is automatically moved by the force of the spring 35 as described above.
It is wound on 3.

[0015]

[Modifications and the like] Modifications and the like will be described below. (1) The fitting 1 may be either an inner fitting or an outer fitting. The shape and structure of the fittings are arbitrary. The lifting plate 12 may or may not be provided. (2) The cover 34 may be formed by arranging a number of elongated slats in the short direction and connecting them with a flexible wire. (3) A recess 17 is provided in the left or right frame 3 or lower frame 5 of the fitting 1, and the roller 2 of the roll blind 19 is provided in the recess 17.
0 may be stored. (4) As the automatic winding device for the cover 34, a known device can be used instead of the spring 35, and a known stopper mechanism can be used instead of the elastic stopper 38. (5) The central plate 7 may be at least partially transparent.

[0016]

According to the present invention, the following effects can be obtained by the above-described configuration. Because the cover is wound around the endless belt, that is, the length of the cover that can be wound by one rotation is longer than the length of the cover that one roller can take up by one rotation. Since the cover is wound around an endless belt that can be used, the length of the roll blind before and after can be set to a known length.
It can be shortened compared to a conventional roll blind having only book rollers. As a result, as described in the embodiment, the roll blind can be built in a frame of a fitting having a short front-rear length.

[Brief description of the drawings]

FIG. 1 is a simplified front view of a partially crushed embodiment showing an embodiment of the present invention.

FIG. 2 is a simplified cross-sectional view taken along the line II-II of FIG. 1 and omitting roll blinds and the like.

FIG. 3 is an enlarged sectional view of a portion A of FIG.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

FIG. 5 is a sectional view taken along line VV of FIG. 3;

FIG. 6 is an enlarged cross-sectional view of a portion B of FIG.

FIG. 7 is an enlarged sectional view taken along line VII-VII of FIG. 1;

[Explanation of symbols]

 19 Roll blind 20 Roller 33 Endless belt 34 Cover

Claims (1)

[Claims] 1. A roll blind having a pair of rollers whose axes are parallel to each other, an endless belt stretched over the rollers, and a flexible sheet-like cover having one end fixed to the endless belt.