JP2009203781A - Roller blind - Google Patents

Abstract

Provided is a winding blind capable of preventing damage to a slat during a slat winding operation even when a lateral deviation occurs in the slat.
A ladder tape 4 is suspended and supported from a winding pipe 3 rotatably supported on a mounting surface, and a plurality of slats 5 are supported on the ladder tape 4, and the ladder tape 4 and the slats 5 are wound together with the winding pipe. In the winding-type blind in which the slats 5 can be moved up and down by winding or unwinding the slats 3, the side brackets 2 that rotatably support both ends of the winding pipe 3 are wound on the winding pipe 3. Prior to this, a guide member 13 for correcting the lateral displacement of the slat 5 was provided.
[Selection] Figure 1

Description

  The present invention relates to a winding-type blind in which a large number of slats supported by a ladder tape are wound on a winding shaft together with a ladder tape and moved up and down.

  In the winding blind, both ends of the winding shaft are rotatably supported by the mounting frame, and a ladder tape is supported by being suspended from the winding shaft, and a multi-stage slat is supported by the ladder tape. The slats can be raised and lowered by winding or unwinding the ladder tape and slats on the take-up shaft. By rotating the take-up shaft with the slats lowered to the lower limit, Each slat is adjustable in angle.

Further, since no lifting cord is required, a lateral displacement prevention tape that penetrates each slat up and down is provided to prevent lateral displacement of the slat.
In Patent Document 1, two pieces of lace fabric are suspended and supported from a hoisting cylinder, and a plurality of slats are supported between the lace fabrics. A horizontal blind that raises and lowers is disclosed.

  In the winding type blind described in Patent Document 2, the upper end of the lateral displacement prevention tape that passes through each slat is attached to the winding shaft, and the lower end is attached to the bottom rail. Accordingly, the lateral displacement of the slat is prevented by the lateral displacement prevention tape that is tensioned by the weight of the bottom rail.

Patent Document 3 discloses a roll screen provided with a correction member that corrects the displacement of the screen.
JP-A-6-173548 JP 2007-16436 A JP 11-247556 A

  In the horizontal blind described in Patent Document 1, since there is no means for preventing the lateral displacement of the slat, when the race fabric and the slat are wound up while swinging in the left-right direction, that is, in the longitudinal direction of the hoisting cylinder, the slat end portion is There is a risk of colliding with the side brackets supporting both ends of the hoisting cylinder and damaging them.

  In the winding type blind described in Patent Document 2, when the bottom rail comes into contact with some obstacle when the slat is lowered and slack occurs in the lateral displacement prevention tape, the lateral displacement of the slat cannot be prevented. Even if the lateral displacement prevention tape is tensed, lateral displacement of the slat occurs when the slat swings in the left-right direction together with the bottom rail.

When the slat is wound around the winding shaft in a state where the lateral displacement is generated, the end of the slat may collide with the side bracket and be damaged.
Patent Document 3 includes a forcing member that corrects the winding deviation of the screen. However, if the friction between the wound screens is large, the screen cannot be moved in a direction to correct the winding deviation. Further, even when the screen has insufficient rigidity, the screen cannot be moved in a direction to correct the winding deviation.

  An object of the present invention is to provide a winding-type blind that can prevent damage to the slats during the winding operation of the slats even when a lateral deviation occurs in the slats.

  In claim 1, a ladder tape is suspended and supported from a winding pipe rotatably supported on an attachment surface, and a plurality of slats are supported on the ladder tape, and the ladder tape is attached to the winding pipe together with the slats. In a winding-type blind in which the slat can be moved up and down by winding or rewinding, the slat has rigidity in the width direction of the slat, and the slat can move relative to the ladder tape in the longitudinal direction of the slat. A side bracket that supports and rotatably supports both ends of the winding pipe is provided with a guide member that corrects lateral displacement of the slat prior to winding of the slat around the winding pipe.

According to a second aspect of the present invention, the guide member is provided with a guide slope that corrects lateral displacement of the slat below the winding pipe.
According to a third aspect of the present invention, through the insertion hole provided in the slat, a lateral shift prevention tape wound around the winding pipe is inserted together with the ladder tape, and the ladder tape supports the slats with a pair of wefts. The transverse slip prevention tape is inserted between the pair of weft yarns, and the distance between the pair of weft yarns is larger than the width of the transverse displacement prevention tape, and the insertion hole moves the slat relative to the longitudinal direction of the slat. The width was set to allow for a margin.

In Claim 4, the corner | angular part of the said slat was made into the corner round part.
According to a fifth aspect of the present invention, a bottom rail is attached to the lower end of the ladder tape, and a stopper that abuts against the guide member and defines an upper limit position of the bottom rail is provided at an end of the bottom rail.

According to a sixth aspect of the present invention, the slat is formed of a thin plate that is curved in the front-rear direction, and the concave surface of the slat is supported by the weft as the upper side.
According to a seventh aspect of the present invention, the guide member includes a rear piece that guides the slat from the rear side of the winding pipe toward the winding pipe.

  According to the present invention, it is possible to provide a winding-type blind that can prevent damage to the slats during the winding operation of the slats even when a lateral deviation occurs in the slats.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 and 2, side brackets 2 are attached to both ends of a mounting frame 1 attached to a mounting surface 12, and a winding pipe 3 is rotatable between the side brackets 2. It is supported. The winding pipe 3 can be rotated in the forward and reverse directions by operating an operating means (not shown).

An upper end portion of a ladder tape 4 is attached to at least both ends in the longitudinal direction of the winding pipe 3, and a plurality of slats 5 are supported on the ladder tape 4 at equal intervals.
More specifically, the slat 5 has a known configuration in which a thin aluminum plate is curved, and has predetermined rigidity in the longitudinal direction and the width direction. In the ladder tape 4, the upper ends of a pair of vertical tapes 6a and 6b formed of cloth are attached to the winding pipe 3, and a plurality of pairs of weft yarns 7a and 7b supporting the slats 5 are vertical tapes 6a and 6b. Are connected to each other.

  As shown in FIG. 3, the weft threads 7 a and 7 b are positioned at both ends in the width direction of the ladder tape 4, and have a slightly larger distance in the vertical direction than the thickness of the slats 5 so that the slats 5 can be inserted. They are spaced apart. When each slat 5 is inserted between the wefts 7a and 7b and supported in the horizontal direction, the slat 5 is supported with its concave surface facing upward.

  A first bottom rail 8a is attached to the lower end of the vertical tape 6a, and a second bottom rail 8b is attached to the lower end of the vertical tape 6b. The first and second bottom rails 8a and 8b are formed in a plate shape having the same height (up and down width), and are inserted into a bag-like portion formed at the lower ends of the vertical tapes 6a and 6b. The first bottom rail 8a is formed thicker than the second bottom rail 8b so that the first bottom rail 8a is heavier than the second bottom rail 8b.

  Further, as shown in FIG. 4, the weft yarns 7a and 7b provided at the lower ends of the longitudinal tapes 6a and 6b are located at the upper end portions of the first and second bottom rails 8a and 8b, and between the weft yarns 7a and 7b. The lowermost slat 5 is inserted.

  As shown in FIG. 3, each slat 5 is formed with an insertion hole 9 positioned between the weft threads 7 a and 7 b, and the insertion hole 9 is formed in a long rectangular shape that is long in the longitudinal direction of the slat 5. . Then, the lateral displacement prevention tape 10 is inserted into the insertion hole 9 of each slat 5, the upper end of the lateral displacement prevention tape 10 is attached to the winding pipe 3, and the lower end portion extends below the lowermost slat 5. It is a free end.

  The width of the lateral displacement prevention tape 10 is formed to be narrower than the length of the long side of the insertion hole 9, and the slat 5 can move relative to the lateral displacement prevention tape 10 in a slight range in the longitudinal direction. Yes. Further, the lateral displacement prevention tape 10 is made of a synthetic resin (PET), and can be kept flexible so that it can be wound around the winding pipe 3 and always extends linearly downward from the winding pipe 3. In particular, the rigidity is high with respect to bending in the width direction, that is, the arrow direction shown in FIG.

  Therefore, after the slat 5 moves in the longitudinal direction and the edge of the short side of the insertion hole 9 comes into contact with the edge of the lateral displacement prevention tape 10, the rigidity of the lateral displacement prevention tape 10 Further movement in the same direction is prevented.

A stopper (free end) 11 for preventing the slat 5 from coming off from the insertion hole 9 is attached to the lower end of the lateral displacement prevention tape 10.
As shown in FIG. 4, the length of the lateral displacement prevention tape 10 is such that when the slat 5 is lowered to the lower limit to be in the horizontal direction, the stopper 11 is separated downward from the lowermost slat 5, and The first and second bottom rails 8a and 8b are set so as to be located at a height corresponding to the center in the vertical direction.

  Then, as shown in FIG. 5 or FIG. 6, when the slat 5 is rotated in the vertical direction, the stopper 11 approaches the lowermost slat 5, but does not obstruct the tilting of the lowermost slat 5. Yes.

  As shown in FIGS. 1 and 2, a guide member 13 is attached to the side bracket 2. The guide member 13 has a shape in which a side piece 14 located on the side of the take-up pipe 3 and a rear piece 15 located behind the take-up pipe 3 are connected to each other at a right angle. Is located in the vicinity of the edge of the winding pipe 3.

Guide slopes 16 and 17 are formed at lower portions of the inner side surfaces of the side piece 14 and the rear piece 15 so as to extend obliquely downward.
Round corners 18 that are rounded in an arc shape are formed at the corners of both end edges of the slat 5, and when the bottom rail 8a is pulled up at the end of the bottom rail 8a, the bottom surface of the guide member 13 is formed. A protrusion that abuts on the surface is formed as a stopper 19.

Next, the operation of the winding blind configured as described above will be described.
FIG. 4 shows a state in which the slat 5 is lowered to the lower limit and rotated in the horizontal direction. When the winding pipe 3 is rotated in the forward direction from this state, the slat 5 is rotated in the fully closed direction as shown in FIG. Further, when the winding pipe 3 is rotated in the reverse direction, the slat 5 is rotated in the reverse fully closed direction as shown in FIG.

  When the winding pipe 3 is further rotated in the same direction after rotating the slat 5 in the fully closed direction, the ladder tape 4 is wound around the winding pipe 3, and the slat 5 together with the ladder tape 4 is wound on the winding pipe 3. Are sequentially wound.

  When the ladder tape 4 is wound around the winding pipe 3, the vertical tape 6b has a larger winding diameter than the vertical tape 6a wound inside and the vertical tape 6b wound outside. However, since the vertical tapes 6a and 6b are connected by the weft yarns 7a and 7b, there is no deviation in the length wound around the winding pipe 3.

  Therefore, as shown in FIG. 7, even if the first and second bottom rails 8a and 8b are pulled up to the vicinity of the take-up pipe 3, the relative positions of the first and second bottom rails 8a and 8b are as shown in FIG. There is no change from the state shown in.

  On the other hand, when the ladder tape 4 and the slat 5 are taken up by the take-up pipe 3, the lateral deviation prevention tape 10 is also taken up by the take-up pipe 3. The winding diameter of the lateral deviation prevention tape 10 is the winding of the vertical tape 6b. The length of the lateral misalignment prevention tape 10 that is smaller than the diameter and is wound around the winding pipe 3 is shorter than the length of the vertical tape 6 b that is wound around the winding pipe 3.

  Further, the lateral displacement prevention tape 10 is inserted into the insertion holes 9 of the slats 5 so as to be relatively movable. For this reason, as shown in FIG. 7, as the ladder tape 4 is wound up, the length of the lateral displacement prevention tape 10 exposed downward from the lowermost slat 5 becomes longer, and the stopper 11 becomes the first and second stoppers 11. It moves downward relative to the bottom rails 8a, 8b. Accordingly, the lateral displacement prevention tape 10 does not loosen during the winding operation and the rewinding operation of the ladder tape 4.

  When the slat 5 is wound around the take-up pipe 3 while the slat 5 and the first and second bottom rails 8a and 8b swing in the left-right direction, the lateral displacement prevention tape 10 is placed in the insertion hole 9 of the slat 5. Since it can move in a slight range in the left-right direction, as shown in FIG. 8, the slat 5 and the bottom rails 8a, 8b may be wound in a state of lateral displacement.

  In such a case, when each slat 5 is pulled up to the vicinity of the take-up pipe 3, the round corner 18 of the slat 5 abuts against the guide slope 16 of the guide member 13, and the lateral displacement is corrected. It is wound around the winding pipe 3.

  The maximum lateral displacement amount of the slat 5 is the sum of the margin between the lateral displacement prevention tape 10 and the insertion hole 9 and the interval until the lateral displacement prevention tape 10 contacts one weft thread 7a. It moves relative to the ladder tape 4 within this range.

And the guide slope 16 of the said guide member 13 is formed in the range which can correct the horizontal shift, when the slat 5 shifts in the range of the maximum horizontal shift amount.
As shown in FIG. 9, the width of the vertical tapes 6 a and 6 b of the ladder tape 4 is set to a width that does not expose the insertion hole 9 even if the slat 5 is laterally displaced up to the maximum lateral displacement amount.

  When the slat 5 supported with the concave surface upward is rotated to the fully closed state, the upper end edge of the slat 5 is substantially vertical as shown in FIG. Incidentally, as shown in FIG. 10B, even if the slat S supported with the convex surface as the upper side is rotated to the fully closed state, the upper end edge of the slat S does not become the vertical direction but goes obliquely upward. It becomes a state.

  Therefore, in the slat 5 shown in FIG. 10A, when the slat 5 is laterally displaced, the corner can be brought into contact with the guide slope 16 from directly below, so that the slat 5 is moved along the guide slope 16. Easy to move in the horizontal direction. As a result, the lateral displacement of the slat 5 can be reliably corrected by the guide slope 16.

When the bottom rail 8a is pulled up to the vicinity of the take-up pipe 3, the stopper 19 comes into contact with the guide member 13 and the further pulling operation is prevented.
In the winding blind configured as described above, the following operational effects can be obtained.
(1) When the lateral displacement prevention tape 10 is wound around the winding pipe 3 together with the ladder tape 4 and the slat 5, the difference in the winding length between the longitudinal tapes 6a and 6b of the ladder tape 4 and the lateral displacement prevention tape 10 is concerned. Therefore, the lateral slip prevention tape 10 was not loosened. Therefore, the lateral displacement of the slat 5 can be prevented.
(2) The lateral displacement prevention tape 10 is inserted into the insertion hole 9 of each slat 5 so as to be relatively movable in the vertical direction, and its lower end is not connected to the first and second bottom rails 8a, 8b. Further, when the slat 5 is wound around the winding pipe, it is possible to prevent the occurrence of slack in the lateral displacement prevention tape 10.
(3) Since the lateral displacement prevention tape 10 has high rigidity against the force acting in the width direction thereof, that is, the longitudinal direction of the slat 5, the lateral displacement of the slat 5 can be prevented.
(4) Since the weft threads 7a and 7b of the ladder tape 4 are located on both sides of the lateral displacement prevention tape 10, even if the lateral displacement prevention tape 10 bends in the lateral displacement direction of the slat 5, the maximum lateral displacement of the slat 5 The range can be a range until the lateral displacement prevention tape 10 contacts the weft yarns 7a and 7b. Therefore, when the slat 5 is unwound from the take-up pipe 3, the lateral displacement of the slat 5 is suppressed even when the lower end of the ladder tape 4 abuts against some obstacle and the ladder tape 4 is loosened. be able to.
(5) During the winding and unwinding operation of the slat 5, the stopper 11 of the lateral displacement prevention tape 10 moves relative to the first and second bottom rails 8a and 8b in the vertical direction. If the vertical height of the second bottom rails 8a and 8b is set to a height that covers the relative movement range of the stopper 11, exposure of the stopper 11 to the indoor side can be prevented. If the first bottom rail 8a side is in the room, exposure of the stopper 11 to the room side can be prevented if at least the height of the first bottom rail 8a is set as the above condition.
(6) Since the weight of the first bottom rail 8a is heavier than the weight of the second bottom rail 8b, each slat 5 can be rotated in a substantially vertical direction when the slat 5 is fully closed. Further, when the ladder tape 4 is wound around the winding pipe 3, even if wrinkles occur on the vertical tape 6a wound on the inner peripheral side, the wrinkles of the vertical tape 6a are extended by the weight of the first bottom rail 8a. Each slat 5 can be rotated to the fully closed state.
(7) When the slat 5 is in the horizontal direction, the heights of the lower ends of the first and second bottom rails 8a and 8b are the same, so the gap between the first bottom rail 8a and the floor surface F when fully closed. If the height of the first bottom rail 8a is set so as to be sufficiently small, the gap between the second bottom rail 8b and the floor surface F at the time of reverse fully closed can be sufficiently small.
(8) Even if the slat 5 is pulled up in a state where the slat 5 is displaced laterally, the lateral displacement can be corrected by the guide member 13 and wound around the winding pipe 3. Therefore, the collision between the slat 5 and the side bracket 2 can be prevented, and the slat 5 can be prevented from being damaged. Further, when the slat 5 is wound while swinging backward, the slat 5 is guided toward the winding pipe 3 by the guide slope 17 of the rear piece 15 of the guide member 13 to smoothly perform the winding operation. be able to.
(9) Since the corner portion of the slat 5 is the rounded corner portion 18, the slat 5 can be prevented from being caught on the guide member 13.
(10) Since the insertion hole 9 of the slat 5 is provided with a margin that allows the lateral displacement prevention tape 10 to be relatively moved in the left-right direction, the direction in which the lateral displacement of the slat 5 is corrected by the guide slope 16 of the guide member 13. The slats 5 can be pushed back easily.
(11) The stopper 19 can be brought into contact with the guide member 13 to prevent the first and second bottom rails 8a, 8b from being wound around the winding pipe 3. Therefore, even if the slats 5 are vigorously wound up by the take-up pipe 3, damage to the slats 5 due to the bottom rails 8a and 8b jumping up can be prevented.

You may implement the said embodiment in the following aspects.
The material of the vertical tapes 6a and 6b of the ladder tape 4 may be other than cloth.
-The material of the lateral shift prevention tape may be a metal tape in addition to the synthetic resin.
A single bottom rail may be used instead of the first and second bottom rails. In this case, when the slat is fully closed and reverse fully closed, the connecting position of the vertical tape is automatically changed by the tilt of the bottom rail so that the tilt angle of the bottom rail is increased.

It is a front view which shows the winding type blind of one embodiment. It is a side view which shows the winding type blind of one Embodiment. It is a top view which shows the slat supported by the ladder tape. It is a side view which shows rotation operation | movement of a slat. It is a side view which shows rotation operation | movement of a slat. It is a side view which shows rotation operation | movement of a slat. It is a side view which shows the state which wound up the slat. It is a front view which shows the effect | action of the guide member at the time of winding up the laterally shifted slat. It is a top view which shows lateral displacement operation | movement of a slat. (A) (b) is a side view which shows the slat made into the fully closed state.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 3 ... Winding pipe, 4 ... Ladder tape, 5 ... Slat, 6a, 6b ... Longitudinal tape, 7a, 7b ... Weft, 8a, 8b ... Bottom rail, 10 ... Side shift prevention tape, 11 ... Free end (stopper) , 12 ... mounting surface, guide member, 16, 17 ... guide slope, 18 ... rounded corner, 19 ... stopper.

Claims (7)

A ladder tape is suspended and supported from a winding pipe rotatably supported on a mounting surface, and a plurality of slats are supported on the ladder tape, and the ladder tape is wound or unwound on the winding pipe together with the slats. In the retractable blind that allows the slats to move up and down,
The slat has rigidity in the width direction of the slat, the slat is supported on the ladder tape so as to be relatively movable in the longitudinal direction of the slat, and a side bracket that rotatably supports both ends of the winding pipe. A winding-type blind comprising a guide member for correcting a lateral displacement of the slat prior to winding the slat around the winding pipe.   The winding type blind according to claim 1, wherein the guide member is provided with a guide slope that corrects a lateral shift of the slat below the winding pipe.   Through the insertion hole provided in the slat, a lateral displacement prevention tape wound around the winding pipe is inserted together with the ladder tape, and the ladder tape supports the slats with a pair of wefts, and the pair of wefts. The transverse slip prevention tape is inserted between the pair of wefts, and the gap between the pair of wefts is larger than the width of the transverse slip prevention tape, and the insertion hole has a margin to allow relative movement of the slat in the longitudinal direction of the slat. The winding-type blind according to claim 1 or 2, wherein the width is provided.   The winding blind according to any one of claims 1 to 3, wherein corners of the slats are rounded corners.   5. A bottom rail is attached to a lower end of the ladder tape, and a stopper is provided at an end of the bottom rail to abut against the guide member to define an upper limit position of the bottom rail. The winding-type blind of any one of these.   The winding blind according to any one of claims 3 to 5, wherein the slat is formed of a thin plate that curves in the front-rear direction, and the concave surface of the slat is supported by the weft.   The winding die according to any one of claims 1 to 6, wherein the guide member includes a rear piece for guiding the slat from the rear side of the winding pipe toward the winding pipe. blind.

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