Roll screen

Abstract

To provide a roll screen capable of effectively reducing or eliminating distortion and irregular winding of a screen with a simple structure.SOLUTION: A roll screen device includes a support member, a winding pipe rotatably supported on the support member, a weight bar, a screen whose one end is connected to the winding pipe so as to be able to be wound and unwound and whose other end hangs down from the winding pipe and is folded back at the weight bar to be connected to the support member, and a spacer attachable to the support member so as to be locatable between the support member and the screen near a position where the other end of the screen is connected to the support member. The spacer, in a state of being attached to the support member, abuts partially against the screen, thereby partially extending the screen.SELECTED DRAWING: Figure 9

Description

[Technical Field]

[0001] The present invention relates to a roller blind. [Background technology]

[0002] BACKGROUND ART A conventional roller blind is known, for example, from Patent Document 1 below.

[0003] The roll screen disclosed in the document has one end of the screen connected to a support bar via a screen fixing member, and the other end of the screen hanging down from the support bar and folded back by a weight member to be connected to a winding roller. The screen fixing member has a screen fixing body whose upper end is attached to the support bar and whose lower part has a recessed groove, a screen mounting bar to which one end of the screen is attached and which is loosely inserted into the recessed groove, and a bar positioning member that is inserted into the end of the screen fixing body and positions the screen mounting bar. The bar positioning member is configured to position the screen mounting bar in its longitudinal direction.

[0004] With this configuration, if the screen is distorted due to a left-right shift, the screen mounting bar can be moved in its longitudinal direction to correct the left-right shift of the screen and then position it. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-84669 Summary of the Invention [Problem to be solved by the invention]

[0006] In this type of roll screen, a border pattern screen with alternating light-transmitting and light-blocking areas is preferably used from the viewpoint of light-control function. In the production process of roll screens using such a screen, the screen must be cut with high precision to match the border so as not to impair the light-control function. If the cutting precision is reduced, the finished screen will be distorted or unevenly wound.

[0007] Even in such cases, the roller blind of Patent Document 1 is effective to a certain extent, but simply moving the screen left and right may not be enough to make the adjustment, and the distortion and irregular winding of the screen may not be completely eliminated. Also, the roller blind of Patent Document 1 has a large number of parts and a complex structure, so it is desirable to eliminate the distortion and irregular winding of the screen with a simpler structure.

[0008] The present invention has been made in view of the above-mentioned problems, and has an object to provide a roll screen that can effectively reduce or eliminate distortion and irregular winding of the screen with a simple structure. [Means for solving the problem]

[0009] In order to achieve the above object, a rolling screen according to one embodiment of the present invention comprises a support member, a winding pipe rotatably supported on the support member, a weight bar, a screen having one end connected to the winding pipe so as to be able to be wound up and unwound and the other end hanging down from the winding pipe and folded back at the weight bar to be connected to the support member, and a spacer attachable to the support member so as to be positionable between the support member and the screen near the position where the other end of the screen is connected to the support member. When attached to the support member, a portion of the spacer abuts against the screen, thereby partially extending the screen.

[0010] With this configuration, even though it has a simple structure of just attaching spacers to the support member, the screen that hangs down from the support member, which is highly effective in adjusting for distortion and irregular winding of the double-folded screen, is configured to be stretched, making it possible to effectively reduce or eliminate distortion and irregular winding of the screen. As a result, there is no need to re-cut the screen, which is expected to reduce labor costs and stabilize production capacity and improve yield.

[0011] The support member may have a groove into which the other end of the screen is inserted for connection. In this case, the spacer may be attached to the groove so that a portion of the spacer protrudes from the groove.

[0012] According to this configuration, distortion and irregular winding of the screen can be effectively reduced or eliminated by utilizing the existing support member without changing the specifications of the support member.

[0013] The groove may have an edge that forms a part of an opening that communicates the inside and outside of the groove. In this case, the spacer may be attached to the groove such that a part of the spacer is sandwiched between the edge and the other end of the screen.

[0014] According to this configuration, the spacer is attached so as to push the other end of the screen into the groove, which further improves the effect of expanding the screen.

[0015] The groove may be formed over the entire length of the support member in the longitudinal direction. In this case, the spacer may be inserted into the groove from an end of the groove in the longitudinal direction and attached to the groove so as to be slidable along the longitudinal direction.

[0016] According to this configuration, the attachment position of the spacer can be moved, which facilitates adjustment work to eliminate distortion or irregular winding of the screen.

[0017] The groove may have an edge that forms a part of an opening that communicates with the inside and outside of the groove over the entire length in the longitudinal direction, and in this case, the spacer may have a recess formed to fit into the edge.

[0018] According to this configuration, the spacer can be easily attached, and the spacer can be smoothly slid to easily move the attachment position.

[0019] The spacer may have an abutment portion that protrudes from the groove portion and abuts against a part of the screen in the installed state, and an engagement portion that is located within the groove portion in the installed state and engages with a part of the groove portion so that movement outside the groove portion is restricted.

[0020] This configuration can prevent the spacer from unintentionally coming off the support member.

[0021] The screen may have a screen stopper plate attached to the other end of the screen and inserted into the groove. In this case, the spacer may be locked in the groove in a state of contact with the screen stopper plate.

[0022] According to this configuration, distortion and irregular winding of the screen can be effectively reduced or eliminated by utilizing the existing screen stopper plate without changing the specifications of the conventional screen stopper plate.

[0023] The spacer may have a thick portion, a thin portion, and a connecting portion connecting the thick portion and the thin portion, and may be attachable to the groove portion by rotating it around the connecting portion so that either the thick portion or the thin portion protrudes from the groove portion.

[0024] According to this configuration, the amount of protrusion from the groove portion can be changed by reversing and attaching the spacer, so that the amount of adjustment for distortion or irregular winding of the screen can be changed. [Effects of the Invention]

[0025] As described above, according to the present invention, it is possible to provide a roll screen that can effectively reduce or eliminate distortion and irregular winding of the screen with a simple structure. However, this effect does not limit the present invention. [Brief explanation of the drawings]

[0026] [Figure 1] 1 is a front view of a roller blind according to a first embodiment of the present invention in an unfolded (lowered) state. [Figure 2] FIG. 2 is a rear view of the roller blind in an unfolded (lowered) state. [Figure 3] 2 is a cross-sectional view taken along the line AA in FIG. 1. [Figure 4] 2 is a cross-sectional view of FIG. 1 taken along line B-B. [Figure 5] FIG. 4 is a side view of the vicinity of the set frame of the roller blind. [Figure 6] FIG. 6 is a view showing a state in which a side plate cover is removed from FIG. 5. [Figure 7] FIG. 10 is a perspective view of a spacer attached to a set frame of the roller blind. [Figure 8] FIG. 10 is a side view showing a state in which a spacer is attached to the set frame. [Figure 9] 10A to 10C are perspective views showing a procedure for attaching a spacer to the set frame. [Figure 10] 10A to 10C are front views showing a procedure for adjusting irregular winding of the screen. [Figure 11] 10A to 10C are rear views illustrating a procedure for adjusting irregular winding of the screen. [Figure 12] 10A to 10C are front views showing a procedure for adjusting irregular winding of the screen. [Figure 13] FIG. 10 is an enlarged cross-sectional view in a side direction showing a state in which a spacer is attached to a set frame in a roller blind according to a second embodiment of the present invention. [Figure 14] FIG. 10 is a side view showing a state in which a spacer is attached to a set frame in the second embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0027] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0028] First Embodiment First, a first embodiment of the present invention will be described.

[0029] [Roll screen configuration] Fig. 1 is a front view of the roller blind according to this embodiment in an unfolded (lowered) state, and Fig. 2 is a rear view of the roller blind in an unfolded (lowered) state. Fig. 3 is a cross-sectional view taken along line AA in Fig. 1, and Fig. 4 is a cross-sectional view taken along line BB in Fig. 1. Fig. 5 is a side view of the roller blind near a set frame. Fig. 6 is a view showing the roller blind in Fig. 5 with a side plate cover removed.

[0030] As shown in these figures, the roller blind 100 has a set frame 1, a winding pipe 2, a screen 3, and a weight bar 4.

[0031] The set frame 1 is a support member that supports the screen 3, and as shown in Fig. 1, is a long member that is fixed to a window frame or wall (not shown) with screws or the like via brackets 5. Side plates 6 are attached to both ends of the set frame 1, and the side plates 6 are covered with side plate covers 13.

[0032] The winding pipe 2 is rotatably supported by the set frame 1, and supports the screen 3 so that it can be wound and unwound. As shown in FIG. 1, one end of the winding pipe 2 is supported by one of the side plates 6 via a pulley 7, and the other end is rotatably supported by the other side plate 6. The winding pipe 2 and pulley 7 rotate together. A loop-shaped operating chain 8 is wound around the pulley 7. The rotation of the pulley 7 is controlled by pulling down the front or rear side of the operating chain 8. Thus, the rotation of the winding pipe 2 is controlled.

[0033] One end of the screen 3 is connected to the winding pipe 2 so that it can be wound up and unwound, and the other end hangs down from the winding pipe 2, is folded back by a weight bar 4 and is connected to the set frame 1. The screen 3 rises together with the weight bar 4 when wound around the winding pipe 2, and descends together with the weight bar 4 when unwound from the winding pipe 2. The screen 3 has, for example, a border pattern in which light-transmitting portions and light-blocking portions are arranged alternately, but is not limited to this.

[0034] More specifically, one end of the screen 3 is fixed to a flat, cylindrical first groove portion 14 formed in part of the outer periphery of the winding pipe 2. A first screen fastening plate 11 is connected to one end of the screen 3, and by inserting this first screen fastening plate 11 into the internal space of the first groove portion 14, one end of the screen 3 is fixed to the first groove portion 14.

[0035] The other end of the screen 3 is fixed to a flat, cylindrical second groove 15 formed diagonally above the take-up pipe 2 and slightly below the rear side of the set frame 1, across the entire longitudinal direction (X direction) of the set frame 1. A second screen fastening plate 12 is connected to the other end of the screen 3, and the other end of the screen 3 is fixed to the second groove 15 by inserting this second screen fastening plate 12 into the internal space of the second groove 15.

[0036] The weight bar 4 holds the screen 3 in a tensile state by its weight. Caps 9 are attached to both ends of the weight bar 4. As shown in Figures 3 and 4, the weight bar 4 has a rotating pipe 42 supported on the folded-back portion of the screen 3, and a weight bar main body 41 that rotatably supports both ends of the rotating pipe 42. The other end of the screen 3 hangs down from the set frame 1 behind the winding pipe 2, and is wrapped around a pipe main body 43 of the rotating pipe 42 of the weight bar 4 from the rear side toward the front and folded back.

[0037] The screen 3 is in a double hanging state, with a portion hanging from the first groove portion 14 and a portion hanging from the second groove portion 15. The folded portion of the screen 3 is pulled downward by the rotary pipe 42 due to the weight of the weight bar 4, thereby maintaining a tensioned state.

[0038] 2, 3, 5, and 6, a spacer 10 is attached to one end side (for example, the opposite side to the operating chain 8) of the second groove portion 15 in the longitudinal direction (X direction) of the set frame 1. When the spacer 10 is attached, a part of it abuts against the screen 3, thereby partially expanding the screen 3 and reducing or eliminating distortion and irregular winding of the screen 3.

[0039] The spacer 10 is formed of, for example, a translucent resin material. As shown in Figures 5 and 6, removing the side plate cover 13 exposes the second groove portion 15, allowing the spacer 10 to be attached. Note that caps (not shown) that can be detachably fitted to both longitudinal ends of the second groove portion 15 are provided, but for convenience of explanation, they will be omitted from the following description. The spacer 10 will be described in detail below.

[0040] [Spacer details] FIG. 7 is a perspective view of the spacer 10, and FIG. 8 is a side view showing the state in which the spacer 10 is attached to the set frame 1. As shown in FIG.

[0041] As shown in both figures, the spacer 10 has an abutment portion 10a that protrudes upward so as to abut against the screen 3 in the above-mentioned installed state, a flange portion 10c that protrudes horizontally so as to form a recess 10b between the abutment portion 10a and the abutment portion 10a, and a locking portion 10d that protrudes horizontally on the opposite side from the flange portion 10c.

[0042] As shown in Figures 3 and 8, the second groove portion 15 has a long slit-shaped opening that connects the inside and outside of the second groove portion 15 to allow the other end of the screen 3 (second screen stop plate 12) to be inserted, and the opening surface has an edge portion 15a that protrudes horizontally (in the Z direction) and forms part of the opening.

[0043] The contact portion 10a is formed so as to be sandwiched between the edge portion 15a and the other end portion of the screen 3 in the attached state, and the recess portion 10b is formed so as to fit into the edge portion 15a.

[0044] The locking portion 10d is located within the second groove portion 15 in the attached state, and is locked to a part of the second groove portion 15 so that movement of the spacer 10 out of the second groove portion 15 is restricted.

[0045] The bottom surface of the spacer 10 (the flange portion 10c and the locking portion 10d) is locked in the second groove portion 15 in a state of contact with the second screen fixing plate 12.

[0046] [Spacer installation procedure and screen winding irregularity adjustment procedure] Next, a procedure for attaching the spacer 10 to the set frame 1 (second groove portion 15) and a procedure for adjusting irregular winding of the screen 3 using the spacer 10 will be described.

[0047] FIG. 9 is a perspective view showing the procedure for attaching the spacer 10. As shown in FIG.

[0048] As shown in the same figures (A) and (B), with the side plate cover 13 removed, the end of the screen 3 inserted into the second groove portion 15 is pulled out, and a spacer 10 is inserted between the screen 3 (the upper part of the second screen fixing plate 12) and the second screen fixing plate 12.

[0049] With the spacer 10 inserted, the screen 3 (second screen stopper plate 12) is inserted into the second groove 15 in the longitudinal direction of the second groove 15 (the direction of the arrow (X direction) in Figure 1(B)), and as shown in Figure 1(C), the recess 10b of the spacer 10 is fitted into the edge 15a of the second groove 15 and slid. In this case, the spacer 10 is slid further back than the screen 3 in the X direction.

[0050] As a result, when viewed from the front of the roller blind 100, the side of the screen 3 to which the spacers 10 are attached is raised by the protruding height of the contact portions 10a of the spacers 10 from the edge portion 15a.

[0051] 10 and 12 are front views showing the procedure for adjusting irregular winding of the screen 3. Also, Fig. 11 is a rear view showing the procedure for adjusting irregular winding.

[0052] As shown in Fig. 10(A), when the screen 3 is lowered and then wound up as shown in Fig. 10(B), irregular winding occurs on the left side (biased to the right) (black arrow in Fig. 10). In this case, the screen 3 is lowered once to adjust the irregular winding as shown in Fig. 10(C).

[0053] Next, as shown in Figure 11(A), the screen 3 is lowered to the bottom end, and then, as shown in the same figure (B), the side plate cover 13 on the side where the screen 3 is miswound (the opposite direction to the biased direction) is removed, and the spacer 10 is attached to the second groove portion 15 and slid.

[0054] As a result, as shown in Fig. 12(C), the side of the screen 3 to which the spacer 10 is attached is raised by the height of the contact portion 10a of the spacer 10 (it can be seen that the right side to which the spacer 10 is attached is higher than the left side with respect to the horizontal line L in the figure). When the side plate cover 13 is returned to the side plate 6 from this state, the state shown in Fig. 12(A) is obtained.

[0055] As shown in FIG. 12(B), when the screen 3 is wound up, the irregular winding is eliminated.

[0056] As described above, according to this embodiment, even though the structure is simple, in which the spacers 10 are simply attached to the set frame 1, it is highly effective in adjusting distortion and irregular winding of the doubly folded screen 3, and since it is configured to stretch the portion hanging down from the set frame 1, it is possible to effectively reduce or eliminate distortion and irregular winding of the screen 3. As a result, it is no longer necessary to recut the screen 3, and this is expected to stabilize production capacity and improve yield by reducing the number of steps.

[0057] Furthermore, distortion and irregular winding of the screen 3 can be effectively reduced or eliminated by utilizing existing components without changing the specifications of the conventional set frame or screen stopper plate.

[0058] Second Embodiment Next, a second embodiment of the present invention will be described. In this and subsequent figures, parts having the same configurations and functions as those in the first embodiment are given the same reference numerals, and descriptions thereof will be omitted.

[0059] Fig. 13 is an enlarged cross-sectional view in the side direction showing the state in which the spacer 10 is attached to the set frame 1 in the roller blind 100 according to this embodiment. Fig. 14 is a side view showing the state in which the spacer 10 is attached to the set frame 1 in this embodiment, with Fig. 14(A) showing the attached state of the spacer 10 adjusted so that the lifting amount of the screen 3 is small, and Fig. 14(B) showing the attached state of the spacer 10 adjusted so that the lifting amount of the screen 3 is large.

[0060] As shown in these figures, the spacer 10 in this embodiment has a thick portion 10e, a thin portion 10f, a connecting portion 10g connecting the thick portion 10e and the thin portion 10f, and two recesses 10b formed on both ends of the connecting portion 10g. Both recesses 10b can fit into the edge 15a of the second groove portion 15.

[0061] 14, the spacer 10 can be attached to the second groove portion 15 so that either the thick portion 10e or the thin portion 10f protrudes from the second groove portion 15 by rotating the spacer 10 by 180° around the axis in the longitudinal direction (X direction) of the set frame 1, centered on the connecting portion 10g. When the spacer 10 is attached so that the thick portion 10e protrudes from the second groove portion 15 as shown in FIG. 14(B), the amount of lifting of the screen 3 is greater than when the spacer 10 is attached so that the thin portion 10f protrudes from the second groove portion 15 as shown in FIG.

[0062] As described above, according to this embodiment, the amount of protrusion from the second groove portion 15 changes when the spacer 10 is attached in an inverted manner, and therefore the amount of adjustment for distortion or irregular winding of the screen 3 can be changed.

[0063] <Other> The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit and scope of the present technology.

[0064] In each of the above-described embodiments, the spacer 10 is part of the set frame 1 and is attached to the second groove portion 15 into which the other end of the screen 3 (second screen stop plate 12) can be inserted, but it is not essential that it be attached to the second groove portion 15, and it may be attached in any position as long as it is attached near the position where the other end of the screen 3 is connected to the set frame 1.

[0065] For example, a rib-shaped member may be provided on the rear side of the set frame 1 at a position where it can abut against the screen 3, and a spacer 10 may be attached to the member, so that the spacer 10 abuts against the screen 3 and expands the screen 3.

[0066] In the above-described embodiment, the spacer 10 is attached to one end of the set frame 1 in the longitudinal direction (X direction), but for example, two spacers 10 having different protruding heights from the second groove portion 15 (or whose protruding height can be adjusted as in the second embodiment) may be attached to both ends of the set frame 1, and distortion and winding irregularities may be adjusted at both ends.

[0067] In the above-described embodiment, the spacer 10 was formed so as to be able to fit into one edge 15a that forms the opening of the second groove portion 15, but it may also be formed so as to be able to fit into the other edge (inside the set frame 1).

[0068] The shape of the spacer 10 is not limited to that described above or illustrated, and any shape is acceptable as long as a portion of the spacer 10 can abut against the screen 3 when attached to the set frame 1, thereby partially expanding the screen 3. [Explanation of symbols]

[0069] 1...Set frame 2...Winding pipe 3...Screen 4...Weight bar 5...Bracket 6...Side plate 7...pulley 8...Operation chain 9...Cap 10...Spacer 10a...Contact part 10b...recess 10c…Tsubabe 10d...Locking part 10e…thick part 10f...thin part 10g...Connection 11...First screen stopper plate 12...Second screen stopper plate 13...Side plate cover 14...First groove 15...Second groove 15a...Edge 41...Weight bar body 42...Rotating pipe 43...Pipe body 100...Roller blinds

Claims

1. A support member; a take-up pipe rotatably supported by the support member; Weight bar and a screen having one end connected to the winding pipe so as to be capable of being wound and unwound, and the other end hanging down from the winding pipe, folded back at the weight bar, and connected to the support member; a spacer attachable to the support member so as to be able to be arranged between the support member and the screen in the vicinity of a position where the other end of the screen is connected to the support member, When the spacer is attached to the support member, a portion of the spacer abuts against the screen, thereby partially expanding the screen. Roller blind.

2. The roller blind according to claim 1, the support member has a groove into which the other end of the screen is inserted for connection, The spacer is attached to the groove so that a portion of the spacer protrudes from the groove. Roller blind.

3. The roller blind according to claim 2, The groove has an edge that forms a part of an opening that communicates the inside and outside of the groove, The spacer is attached to the groove so that a portion of the spacer is sandwiched between the edge and the other end of the screen. Roller blind.

4. The roller blind according to claim 2, The groove is formed over the entire length of the support member, The spacer is inserted into the groove from an end portion in the longitudinal direction and attached to the groove so as to be slidable along the longitudinal direction. Roller blind.

5. The roller blind according to claim 4, The groove portion has an edge portion that forms a part of an opening that communicates between the inside and outside of the groove portion over the entire area in the longitudinal direction, The spacer has a recess formed to fit into the edge. Roller blind.

6. The roller blind according to claim 2, The spacer has an abutting portion that protrudes from the groove portion and abuts against a part of the screen in the attached state, and an engaging portion that is located within the groove portion in the attached state and is engaged with a part of the groove portion so as to restrict movement outside the groove portion. Roller blind.

7. The roller blind according to claim 2, the screen has a screen stop plate attached to the other end of the screen and inserted into the groove, The spacer is engaged in contact with the screen fixing plate inside the groove. Roller blind.

8. The roller blind according to claim 2, The spacer has a thick portion, a thin portion, and a connecting portion that connects the thick portion and the thin portion, and can be attached to the groove portion by rotating it around the connecting portion so that either the thick portion or the thin portion protrudes from the groove portion. Roller blind.

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