JP2020172745A - Roll screen - Google Patents

Abstract

To provide a roll screen capable of closing a window opening without a gap.SOLUTION: The roll screen includes: a pair of left and right side brackets 20 supported by a building wall 10 above a window opening 11b of the building wall 10; a take-up shaft 30 rotatably supported by the side bracket 20; and a screen 40 having a breadth wider than the breadth of the window opening 11b and wound around the take-up shaft 30, wherein the screen 40 can be pulled down from the take-up shaft 30 along the window opening 11b. The take-up shaft 30 is supported by an indoor side wall surface 10a above an indoor side upper edge of the window opening 11b, and the screen 40 pulled down from the take-up shaft 30 is folded upward by a weight bar 50 to be fixed above the indoor side upper edge of the window opening 11b.SELECTED DRAWING: Figure 1A

Description

The present invention relates to a roll screen, and more particularly to a roll screen capable of closing a window opening without a gap.

In general, the roll screen itself is flat and lightweight, so that it can be easily opened and closed (elevated and lowered), and the screen does not project to the indoor side, so that a large indoor space can be taken. The winding shaft of the roll screen is attached to the side wall surface of the room adjacent to the upper edge of the window opening, or in the case of a bay window, it is attached to the ceiling surface of the bay window (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2016-44437

As described above, the roll screen can be easily opened and closed (elevated and lowered), but there is a demand that the window opening be completely closed without any gap in order to enhance the air conditioning effect and ensure privacy. However, when the winding shaft 30 of the roll screen 100 is attached to the indoor side wall surface 10a adjacent to the upper edge of the window opening 10b as shown in FIGS. 4A and 4B, the screen 40 is wound with the elevating cord 70. Even if the window opening 10b is closed by pulling down from the shaft 30, a gap C1 is formed between the window opening 10b and the window opening 10b.

This is because the winding diameter of the take-up shaft 30 decreases as the screen 40 is pulled down. If there is a gap C1 between the window opening 10b and the window opening 10b, the effect of indoor air conditioning is reduced. In addition, privacy may be leaked to the outside due to the leakage of indoor light at night, and the home theater environment may be impaired by the intrusion of sunlight during the daytime. On the other hand, when the winding shaft 30 is attached to the ceiling surface of the window opening 10b in order to completely close the window opening 10b, the winding shaft 30 is used in the case of the inward opening window 12 as shown in FIGS. 5A to 5C. Interferes and the window 12 cannot be opened.

Therefore, an object of the present invention is to provide a roll screen capable of closing a window opening without a gap.

In order to solve the above problems, the roll screen of the present invention includes a pair of left and right side brackets supported above the window opening formed in the building wall, and a take-up shaft rotatably supported by the side brackets. A roll screen that is wider than the width of the window opening and is wound around the take-up shaft, and the screen can be pulled down from the take-up shaft along the window opening from the take-up shaft. The screen that has been pulled down is folded upward by a weight bar and fixed above the indoor upper edge of the window opening or the indoor upper edge.

According to the roll screen of the present invention, the screen folded upward by the weight bar is fixed above the indoor upper edge of the window opening or the indoor upper edge, so that the window opening is closed without a gap by the screen. Can be done.

It is sectional drawing of the roll screen which concerns on Embodiment 1 of this invention. It is sectional drawing of the roll screen which concerns on Embodiment 2 of this invention. It is sectional drawing of the roll screen which concerns on Embodiment 3 of this invention. It is sectional drawing of the upper end support structure of a screen using a screen support member. It is a perspective view of the screen support member of FIG. 2A. It is a perspective view of the angle adjusting member of a screen support member. It is sectional drawing of the upper end support structure of a screen using another screen support member. It is a perspective view of FIG. 3A. It is (a) perspective view and (b) sectional view of the conventional roll screen attached to the interior side wall surface. It is a cross-sectional view of (a) a closed state, (b) a cross-sectional view of an open state, and (c) a plan view of an open state of an inward opening type window glass.

Hereinafter, embodiments of the roll screen of the present invention will be described with reference to the drawings. 1A shows the first embodiment, 1B shows the second embodiment, and FIG. 1C shows the third embodiment. The first and second embodiments are the case where the window frame 11 is provided, and the third embodiment is the case where the window frame is not provided.

(Embodiment 1)
The roll screen 100 of the first embodiment of FIG. 1A has a pair of left and right side brackets 20 attached to the interior side wall surface 10a of the building wall 10, and a cylindrical winding having both ends rotatably supported by the side brackets 20. It is composed of a shaft 30, a screen 40 wound around a take-up shaft 30, and a cylindrical weight bar 50 attached to a folded lower end of the screen 40. A cover 60 may be attached above the take-up shaft 30.

The inside of the window frame 11 provided on the building wall 10 is the window opening 11b. A window 12 is provided on the outdoor side of the window opening 11b. In the illustrated example, the window 12 is simply shown as a dead window, but the window 12 has an arbitrary model such as an outward opening window, an inward opening window, an inward tilting window, a sliding window, and a louver window.

The indoor side of the window opening 11b is opened and closed by the screen 40. The screen 40 is pulled out from the indoor outer peripheral surface of the take-up shaft 30 and folded upward by the weight bar 50. The screen 40 is opened and closed by rotating the take-up shaft 30 with an elevating cord attached to one end of the take-up shaft 30.

The weight bar 50 can be stopped at any height between (a) fully closed and (b) fully open by the screen 40. The folded portion of the screen 40 is pulled downward by the weight of the weight bar 50, so that the stretched state of the screen 40 is maintained. The take-up shaft 30 can also be an electric rotary type.

In the roll screen 100 of the present invention, as shown in FIG. 1A, the upper end portion 40a of the screen 40 folded back by the weight bar 50 is a rail plate connecting the left and right side brackets 20 and both side brackets 20 (not shown). ) Is fixed. The fixing method is arbitrary, such as adhesive, double-sided tape, or screwing. Then, when the screen 40 is lowered to close the window opening 11b as shown in FIG. 1A (a), the window opening 11b is completely in contact with the indoor side edges 11a and 11c of the window frame 11 without a gap. It is blocked.

Here, the diameter of the weight bar 50 is such that the indoor side and the outdoor side of the screen 40 are parallel to each other in the closed state of (a). Therefore, when the take-up shaft 30 is exposed in the closed state of (a), the take-up shaft 30 and the weight bar 50 have substantially the same diameter.

The fixed position in the left-right direction in FIG. 1A of the upper end portion 40a of the screen 40 may be adjustable so that a gap does not occur between the window frame 11 and the screen 40. An example of such a position-adjustable configuration will be described later with reference to FIGS. 2A to 2C.

In the closed state of FIG. 1A (a), the screen 40 is duplicated by folding back at the weight bar 50, so that a heat insulating effect is obtained by the air layer held between the screens 40. Therefore, in combination with the complete closure of the window opening 11b, the air conditioning effect in summer and winter can be enhanced and the air conditioning cost can be reduced.

Further, when the screen 40 has a light-shielding property, privacy can be ensured by completely preventing leakage of indoor light at night. On the other hand, in the daytime, an ideal home theater environment can be provided by completely preventing the intrusion of foreign light. In this case, the light-shielding layer (white or black) is formed on the opposite inside of the screen 40 and is not visible from the outside. That is, the same pattern as the indoor pattern of the screen 40 can be seen from the outside, so that the appearance is good.

As shown in FIG. 1A (b), the window opening 11b can be fully opened by raising the screen 40 and raising the weight bar 50 to the height of the upper frame of the window frame 11. Therefore, even if the window 12 is an inward opening type or an inward tilting type, the window can be opened to the indoor side without interfering with the weight bar 50.

(Embodiment 2)
FIG. 1B is a roll screen 100 according to the second embodiment. In the second embodiment, the screen 40 is pulled out from the outdoor outer peripheral surface of the take-up shaft 30 and folded upward by the cylindrical weight bar 51. The upper end 40a of the folded screen 40 is fixed to the upper frame of the window frame 11. The fixing method is arbitrary, such as adhesive, double-sided tape, or screwing.

In the second embodiment, the fixed position does not need to be adjusted as compared with the first embodiment in which the upper end portion 40a of the screen is fixed to the side bracket 20, and the required length of the screen 40 can be shortened, so that the cost can be reduced. .. Further, since the indoor side and the outdoor side of the screen 40 can be brought close to each other in a parallel state, the diameter of the weight bar 51 can be made smaller than that of the weight bar 50 of the first embodiment, and the indoor space can be made wider. it can.

Further, by rotating the take-up shaft 30 in the arrow direction with the elevating cord, the closed state of FIG. 1B (a) is changed to the open state of FIG. 1B (b). At this time, the roll including the take-up shaft 30 is changed. The diameter gradually increases. Therefore, the weight bar 51 is urged toward the window frame 11 by the tension of the screen 40. Therefore, both ends of the weight bar 51 are always moved up and down along the indoor vertical frame 11c of the window frame 11, and the weight bar 51 may be unstable and the winding shaft 30 may be disturbed. Absent.

(Embodiment 3)
FIG. 1C is a roll screen 100 according to the third embodiment. In the third embodiment, the window opening 10b is formed on the building wall 10 without a window frame, and the upper end portion 40a of the screen 40 is formed on the indoor side wall surface 10a above the indoor side upper edge of the window opening 10b. It is fixed. The fixing method is arbitrary, such as adhesive, double-sided tape, or screwing.

In the third embodiment of FIG. 1C, since there is no window frame, the interior space can be made wider. In the conventional roll screen 100, as shown in FIG. 3, a gap C1 is formed and the window opening 10b cannot be completely closed. However, according to the present invention, the window opening 10b is closed as shown in FIG. 1C (a). Can be completely closed. Further, it is the same as the above-described second embodiment that there is no risk of the winding shaft 30 being disturbed.

(Angle adjustment member)
In the first embodiment described in FIG. 1A, the upper end portion 40a of the screen 40 is fixed to the rail plate (not shown) connecting the left and right side brackets 20 and both side brackets 20, but the window from the indoor side wall surface 10a. It is difficult to fix the upper end portion 40a of the screen 40 according to the overhang thickness of the frame 11. Therefore, as shown in FIG. 2A, the screen support member 21 was attached to the side bracket 20.

The screen support member 21 is a plate-shaped member extending in parallel with the winding shaft 30, and the upper end portion 40a of the screen 40 is fixed to the plate-shaped member. The fixing method is arbitrary, such as adhesive, double-sided tape, or screwing. Further, as shown in FIG. 2B, arm portions 21a and shaft portions 21b are provided at both ends of the plate-shaped member, and the left and right shaft portions 21b penetrate the side bracket 20 coaxially with the winding shaft 30 to form the side bracket 20. It is rotatably supported. Therefore, the screen support member 21 can rotate in the vertical direction in FIG. 2A about the shaft portion 21b.

On the other hand, the angle adjusting member 22 is rotatably attached to the intermediate position in the longitudinal direction of the side bracket 20. The angle adjusting member 22 is for adjusting the inclination angle of the screen support member 21, and has two notches 22a to which the arm portion 21a of the screen support member 21 can be engaged. The inclination angle of the screen support member 21 is fixed by engaging the arm portion 21a with either the upper or lower notch portion 22a.

2A and 2B show a state in which the arm portion 21a is engaged with the lower notch portion 22a. In this state, the gap C2 formed between the tip of the screen support member 21 and the interior side wall surface 10a of the building wall 10 is the same as or slightly larger than the thickness of the window frame 11 protruding from the interior side wall surface 10a. Make it smaller.

As a result, the left and right ends of the screen 40 on the window frame 11 side come into contact with the indoor vertical frame 11c of the window frame 11 without any gap. When a gap is generated between the indoor vertical frame 11c of the window frame 11 and the left and right ends of the screen 40, the arm portion 21a is engaged with the notch portion 22a on the upper side of the angle adjusting member 22 as shown in FIG. 2A (b). Match.

In the figure, the gap C3 formed between the tip of the screen support member 21 and the indoor side wall surface 10a is smaller than the gap C2 described above (C3 <C2). It goes without saying that the number of notches 22a may be two or more so that the angle can be adjusted in multiple stages.

The screen support member 21 is not limited to the above-mentioned rotary type. 3A and 3B are an upper end support structure using another horizontal sliding type screen support member 23. The screen support member 23 has a plate-shaped member horizontally slidably supported on the outer surfaces of the left and right side brackets 20.

An elongated hole 23a is formed in the longitudinal direction (horizontal direction) of the screen support member 23. On the other hand, a pair of left and right guide protrusions 20a are formed on the outer surface of the side bracket 20, and the guide protrusions 20a are slidably engaged with the elongated holes 23a of the screen support member 23. The screen support member 23 is configured to be slidable in the direction of the arrow (horizontal direction) in FIG. 3B.

The upper end 40a of the screen 40 is fixed to the tip of the screen support member 23 on the window 12 side. By adjusting the position by sliding the screen support member 23 in the horizontal direction, the screen 40 on the window 12 side can be brought into contact with the vertical frame 11c on the indoor side without a gap. The guide protrusion 20a can be configured with screws, and the position of the screen support member 23 can be fixed by tightening the screws after adjusting the position of the screen support member 23.

In this way, the screen support members 21 and 23 need only be movably attached to the side bracket 20, whereby the horizontal position of the upper end portion 40a of the screen 40 can be adjusted so that there is no gap on the indoor side surface of the window frame 11. It becomes possible to make contact.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments and can be modified in various ways. For example, in the above-described embodiment of FIGS. 3A and 3B, the screen support member 23 is horizontally slid so that the position can be adjusted. It is also possible to configure the window frame 11 so as to be crimped to the indoor side edge portion 11a.

10: Building wall 10a: Interior side wall surface 10b: Window opening 11: Window frame 11a: Indoor side edge 11b: Window opening 11c: Indoor side vertical frame 12: Window 20: Side bracket 21, 23: Screen support member 21a: Arm Part 21b: Shaft part 22: Angle adjusting member 22a: Notch part 30: Winding shaft 40: Screen 40a: Upper end part of screen 50, 51: Weight bar 60: Cover 70: Lifting cord 100: Roll screen C1 to C3: Gap

Claims (3)

A pair of left and right side brackets supported above the window opening formed on the building wall, a winding shaft rotatably supported by the side bracket, and the winding that is wider than the width of the window opening. In a roll screen comprising a screen wound around a shaft and capable of pulling the screen down from the take-up shaft along the window opening, the screen pulled down from the take-up shaft is folded upward by a weight bar. A roll screen characterized by being fixed above the indoor upper edge of the window opening or the indoor upper edge. The roll screen according to claim 1, wherein an upper end portion of the screen folded upward by the weight bar is fixed to the side bracket. The roll screen according to claim 1, wherein an upper end portion of the screen folded upward by the weight bar is fixed to a screen support member movably attached to the side bracket.

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