JP2009203780A - Roller blind - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roller blind which can surely prevent horizontal displacement of a slat. <P>SOLUTION: In this roller blind, a ladder tape 4 is supported in the state of being suspended from a winding pipe 3 which is rotatably supported on a mounting surface 12, and the multitier slats 5 are supported on the ladder tape 4. The slats 5 can be hoisted or lowered by winding or unwinding the ladder tape 4 around or from the winding pipe 3 together with the slats 5. An anti-horizontal-displacement tape 10 is inserted into the slat 5, and bottom rails 8a and 8b are connected to a lower end of the ladder tape 4. The anti-horizontal-displacement tape 10 is inserted through each of the slats 5 in such a manner as to be relatively displaceable in a vertical direction; an upper end of the anti-horizontal-displacement tape 10 is connected to the winding pipe 3; and a lower end of the anti-horizontal-displacement tape 10 serves as a free end 11 which is not connected to the bottom rails 8a and 8b. <P>COPYRIGHT: (C)2009,JPO&INPIT

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 angle of each slat can be adjusted via the ladder tape by rotating the winding shaft, and the slat can be raised and lowered by winding or unwinding the ladder tape and slat on the winding shaft. Yes.

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 the winding type blind described in Patent Document 1, 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.

With such a configuration, when the bottom rail is lowered to the lower limit, the lateral displacement of each slat is prevented by the lateral displacement prevention tape that is tensioned by the weight of the bottom rail.
Patent Document 2 discloses a blind in which the lower plate attached to the lower end of the ladder cord is an independent lower plate for each vertical cord so as to improve the rotational tiltability of the slat group.
JP 2007-16436 A Japanese Utility Model Publication No. 4-43597

  In the winding blind described in Patent Document 1, the lower ends of the ladder tape and the lateral displacement prevention tape are fixed to the bottom rail. When the winding shaft is rotated and the slat is pulled up, the ladder tape and the slat are wound around the winding shaft, the bottom rail is raised, and the lateral displacement prevention tape is also wound around the winding shaft.

  At this time, since the winding length of the ladder tape wound outside the lateral misalignment tape is longer than the winding length of the lateral misalignment prevention tape, the lateral misalignment prevention tape is loosened based on the rise of the bottom rail. It becomes a state.

As a result, when the slat is lifted, the lateral displacement of the slat may occur due to the slack of the lateral displacement prevention tape.
An object of the present invention is to provide a winding blind that can surely prevent lateral displacement of 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. The slats can be moved up and down by winding or rewinding, a lateral displacement prevention tape is inserted into the slats, and a lower rail is connected to the bottom rail of the ladder tape. Each slat is inserted so as to be movable in the up and down direction relative to each other, the upper end of the lateral displacement prevention tape is connected to the winding pipe, and the lower end of the lateral displacement prevention tape is a free end that is not connected to the bottom rail. .

According to a second aspect of the present invention, the lateral displacement prevention tape is formed of a material having high rigidity in the width direction of the lateral displacement prevention tape.
According to a third aspect of the present invention, the ladder tape includes a pair of warp tapes and a plurality of pairs of wefts that connect the warp tapes, the slats are inserted between the pair of wefts, and the wefts forming the pair are inserted into the weft misalignment. Positioned on both sides of the prevention tape.

  According to a fourth aspect of the present invention, an independent bottom rail is attached to the lower end of the longitudinal tape, and the weight of the bottom rail attached to the longitudinal tape wound inside when the winding pipe is wound is set to the outside. Heavier than the weight of the bottom rail attached to the vertical tape to be wound.

  6. The lateral shift prevention tape according to claim 5, wherein the bottom rail has a width at least equal to a relative movement distance between a ladder tape and a lateral slip prevention tape generated when the bottom rail is pulled up from a lower limit to an upper limit. The width of the free end was set so as not to be exposed to the indoor side.

  According to a sixth aspect of the present invention, a stopper is provided at the lower end of the lateral displacement prevention tape to prevent the lateral displacement prevention tape from coming off from the lowest slat.

  ADVANTAGE OF THE INVENTION According to this invention, the winding-type blind which can prevent the lateral shift | offset | difference of a slat reliably can be provided.

  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. 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. Each slat 5 is inserted between the wefts 7a and 7b with the convex surface facing downward.

  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 having a longitudinal width of the slat 5 larger than the width of the insertion hole 9 of the slat 5 is attached to the lower end of the lateral displacement prevention tape 10. This prevents the slats 5 from coming off.

  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.

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 the slat 5 is rotated in the fully closed direction, the ladder tape 4 is wound around the winding pipe 3, and together with the ladder tape 4, as shown in FIG. The slats 5 are sequentially wound around the winding pipe 3.

  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.

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 displacement 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 movably inserted into the insertion holes 9 of the slats 5 and the lower ends thereof are not connected to the first and second bottom rails 8a and 8b, so that the ladder tape 4 and the slats 5 are It is possible to prevent the occurrence of slack in the lateral displacement prevention tape 10 when winding on the winding pipe.
(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.

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 an enlarged view which shows the ladder tape and slat wound up by the winding pipe.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 3 ... Winding pipe, 4 ... Ladder tape, 7 ... Slat, 6a, 6b ... Longitudinal tape, 7a, 7b ... Weft, 8a, 8b ... Bottom rail, 10 ... Side shift prevention tape, 11 ... Free end (stopper) 12 ... Mounting surface.

Claims (6)

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. The slats can be moved up and down, a lateral displacement prevention tape is inserted into the slats, and the lower end of the ladder tape is connected to a bottom rail.
The lateral displacement prevention tape is inserted through the slats so as to be movable relative to each other in the vertical direction, the upper end of the lateral displacement prevention tape is connected to the winding pipe, and the lower end of the lateral displacement prevention tape is not connected to the bottom rail. A winding blind characterized by a free end.   The winding type blind according to claim 1, wherein the lateral displacement prevention tape is formed of a material having high rigidity in a width direction of the lateral displacement prevention tape.   The ladder tape includes a pair of warp tapes and a plurality of pairs of wefts that connect the warp tapes, the slats are inserted between the pair of wefts, and the pair of wefts are arranged on both sides of the weft prevention tape. The winding type blind according to claim 1, wherein the winding type blind is positioned.   A vertical tape that is wound around the weight of the bottom rail that is attached to the vertical tape that is wound inside when the independent bottom rail is attached to the lower end of the vertical tape and wound around the winding pipe. The take-up type blind according to claim 3, wherein the take-up type blind is made heavier than the weight of the bottom rail attached to the frame.   The vertical width of the bottom rail has a width at least equal to the relative movement distance between the ladder tape and the lateral displacement prevention tape generated when the bottom rail is pulled up from the lower limit to the upper limit, and the free end of the lateral displacement prevention tape is 5. The winding blind according to claim 4, wherein the width is not exposed to the indoor side.   The winding according to any one of claims 1 to 5, wherein a stopper is provided at a lower end of the lateral displacement prevention tape to prevent the lateral displacement prevention tape from coming off from the lowest slat. Take type blind.

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