JP2018053714A - Horizontal blind - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a horizontal blind capable of preventing horizontal deviation of a slat almost certainly when the blind is opened/closed or lifted/lowered.SOLUTION: A horizontal blind 1 includes a head box 2, ladder cords 4A to 4C, and lifting cords 5A to 5C. A slat 3 has a notch part. The ladder cords 4A to 4C have first and second weft threads 43 and 44 intersecting with and connected between first and second warp threads 41 and 42. The slat 3 is sandwiched between the first and second weft threads 43 and 44, with the notch part facing toward a side opposite of the intersecting part of the first and second weft threads 43 and 44. The lifting cord 5A is braided between the first and second weft threads 43 and 44, so as to pass on a left side of the first weft thread 43 and on a right side of the second weft thread 44 when seen from an indoor side. The lifting cord 5B is braided in a direction opposite to the lifting cord 5A.SELECTED DRAWING: Figure 1

Description

The present invention relates to a horizontal blind that can perform slat angle adjustment operation and elevating operation by a ladder cord and an elevating cord.

FIG. 25 is a perspective view showing the main part of a conventional horizontal blind, and FIG. 26 is a plan view showing the relationship between the size of the notch and the lifting cord.
As this type of horizontal blind, for example, there are blinds described in Patent Document 1 and Patent Document 2. As shown in FIG. 25, this horizontal blind has two wefts 1 of ladder cords.
11 and 112 are crossed and joined between the two warps 121 and 122. Then, the notch 101 is directed to the crossing portion P side of the wefts 111 and 112, and the slat 100 is made of two wefts 1
11 and 112, and the lifting / lowering cord 130 is passed through a gap G sandwiched between the intersecting portion P of the weft yarns 111 and 112 and the warp yarn 121.
With this configuration, the crossing portion P of the weft yarns 111 and 112 and the lifting / lowering cord 130 are connected to the slat 1
The lateral displacement of the slat 100 is prevented by engaging with the notch 101 of 00. Also,
By inserting the lifting / lowering cord 130 through a gap G sandwiched between the intersecting portion P of the weft yarns 111 and 112 and the warp yarn 121, direct contact with the slat 100 is avoided and wear of the slat 100 is prevented.

JP 2013-227841 A JP 2014-70444 A

However, the conventional horizontal blind described above has the following problems.
In the above-described conventional horizontal blind, as shown in FIG. 26, when the slat 100 is opened and closed, the notch 101 moves slightly in the horizontal direction (left and right direction in FIG. 26).
In order to prevent 0 from being caught and damaged by the notch 101, the notch 101
In many cases, play is provided for the width W of the lifter 130 being larger than the thickness of the lifting / lowering cord 130.
However, when play is provided in the cutout portion 101 in this way, the slat 100 moves within the range of play of the cutout portion 101 when the slat 100 is lowered, and so on.
This is a cause of lateral displacement (lateral displacement in FIG. 26).

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a horizontal blind that can prevent lateral displacement of a slat at the time of opening / closing and raising / lowering almost certainly.

In order to solve the above-mentioned problem, the invention of claim 1 is configured to support a plurality of slats so that the angle can be adjusted by a plurality of ladder cords drawn from the head box and connected to the bottom rail at the lower end, and from the head box. A horizontal blind capable of moving up and down a slat by a plurality of lifting cords drawn out along each ladder cord and connected to the bottom rail at the lower end, each ladder cord, each of the first and second warp yarns, The first and second wefts connected between the first and second warp yarns at the step and supported by sandwiching the slats at each step, and at least two notches are formed at both edges in the width direction of the slats The slats are arranged between the first and second weft yarns in a state where each notch portion is close to the first warp yarn, and one lifting cord is formed on one edge of the portion. Along the first warp located in the vicinity of the notch on the other side, passing between the first and second wefts connected to the first warp, and another one lifting cord, Arranged along the first warp located near the other notch, passed between the first and second wefts connected to the first warp, and the one lifting cord, Knitting so as to pass the other side of the second weft thread through one side of the first weft thread, the other one lifting cord passing through the other side of the first weft thread, one side of the second weft thread The structure was knitted to pass through.
With this configuration, the angle of a plurality of slats can be adjusted with the ladder cord, and the slats can be raised and lowered with the lifting cord with the lifting cord. At this time, one lifting / lowering cord is passed between the first and second wefts while being arranged along the first warp located in the vicinity of one notch, and the other lifting / lowering is performed. Since the cord is passed between the first and second wefts in a state of being arranged along the first warp located in the vicinity of the other notch, the width of the notch of the slat is reduced. If the play is provided for a larger than the thickness of the lifting / lowering cord, when the slat is in a substantially horizontal state,
The warp yarns are in a state of being almost lined up and entering the notch. As a result, the movement of the slats in the lateral direction is prevented by the lifting cord and the first warp thread that enter the cutout portion side by side.
In addition, since the weaving direction of one lifting cord is opposite to the weaving direction of the other lifting cord, the edge of the notch comes into contact with the lifting cord when the notch portion is detached from the lifting cord. . Thereby, the lateral movement of the slat is regulated by the lifting / lowering cord. Moreover, since the regulation direction with respect to the slat by one lifting / lowering cord and the regulation direction with respect to the slat by the other lifting / lowering cord are exactly opposite, movement of the slat in the lateral direction is prevented.

According to a second aspect of the present invention, in the horizontal blind according to the first aspect, a notch portion separate from the notch portion is formed on the other edge portion of the two edge portions in the width direction of the slat, the code,
It is set as the structure distribute | arranged along the 1st warp located in the vicinity of a notch part.
With this configuration, the width of the separate notch is set to be approximately equal to the width of the lifting / lowering cord, so that the lifting / lowering cord enters into the notch of the separate body and prevents lateral movement of the slats. To do.

A third aspect of the present invention is the horizontal blind according to the first or second aspect, wherein a narrow groove in which either the first or the second weft can be engaged is provided in the back of the notch. And
With such a configuration, after the lifting / lowering cord or the first warp thread has come out of the notch portion of the slat, either the first or second weft thread is engaged with the inner portion of the notching portion. Even after the first warp thread exits from the notch of the slat, the lateral movement of the slat is prevented.

According to a fourth aspect of the present invention, in the horizontal blind according to the first aspect, the slat is a thick flat plate slat.
With this configuration, when the second warp of the ladder cord is pulled up, the notch portion side faces downward, and the slat can be brought into a so-called fully closed state. At this time, since the notch part is directed downward, the first and second wefts are easily engaged with the notch part to prevent the lateral displacement and detachment of the slat.
On the other hand, when the first warp of the ladder cord is pulled up, the notch portion side faces upward, and the slat is in a so-called reverse fully closed state. At this time, since the notch is facing upward, the first
And there exists a possibility that a 2nd weft may not engage with a notch.
However, according to the present invention, since the slat is a thick flat plate-like slat, the first and second wefts reliably engage with the thick notch portion facing upward. Therefore, not only when the slat is in the fully closed state, but also when the slat is in the reverse fully closed state, the first and second wefts can be engaged with the cutout portion, and the slat can be prevented from slipping or coming off. be able to.

According to a fifth aspect of the present invention, there is provided the horizontal blind according to the fourth aspect, wherein the thickness T of the flat slat is T.
1 and the distance T2 between the connection point of the first weft yarn with the first warp and the connection point of the second weft yarn with the first warp yarn is T2 / T1 = 0.92-1. The configuration is set to 43.

The invention of claim 6 is the horizontal blind according to claim 4 or claim 5, wherein the width L1 of the slat and the first and second warps 41 and 42 in a state where the first and second wefts are stretched. The relation with the inner dimension L2 is set to L2 / L1 = 0.99 to 1.13.

A seventh aspect of the present invention is the horizontal blind according to any one of the fourth to sixth aspects, wherein the pair of side surfaces constituting the cut-out portion of the flat slat are perpendicular or narrow with respect to the longitudinal direction of the slat. The configuration is set to be

As described above in detail, according to the horizontal blind of the present invention, there is an excellent effect that the lateral displacement of the slat when the slat is opened and closed and when the slat is raised and lowered can be prevented almost certainly. Furthermore, it is possible to reliably prevent the lateral displacement of the slats that occurs when the notch part comes off the lifting cord.
Further, according to the invention of claim 3, it is possible to continue to prevent the lateral displacement of the slat even after the cutout portion is detached from the lifting / lowering cord.
In particular, according to the inventions of claims 4 to 7, it is possible to reliably prevent the lateral displacement and detachment of the slats not only in the fully closed state of the slats but also in the reverse fully closed state.

1 is a perspective view showing a horizontal blind according to a first embodiment of the present invention. It is a schematic perspective view which shows the drum mechanism with which the ladder code | cord | chord of the room view right side and the raising / lowering cord were connected. It is a schematic perspective view which shows the drum mechanism with which the ladder cord and the raising / lowering cord of the room view left side were connected. It is a schematic perspective view which shows the drum mechanism with which the ladder code | cord | chord of the room view center and the raising / lowering cord were connected. It is a perspective view which shows the support state of the slat by a ladder cord. It is a top view of a slat. It is a top view which shows the positional relationship of the support state of a slat 3, a ladder code, and a raising / lowering cord, (a) of FIG. 7 shows the positional relationship between the support state of a slat in a room view right side, a ladder code, and a raising / lowering cord. 7B shows the positional relationship between the support state of the slats on the left side of the room view and the ladder cord and the lifting cord, and FIG. 7C shows the support state of the slats in the center of the room view and the ladder code. The positional relationship with the lifting / lowering cord is shown. It is sectional drawing which shows the knitting state of the raising / lowering cord with respect to the 1st warp of a ladder cord, (a) of FIG. 8 shows the knitting state of the raising / lowering cord on the right side of room view, (b) of FIG. The braided state of the left lifting / lowering cord is shown, and FIG. 8C shows the arrangement state of the lifting cord at the center in the room view. It is a schematic sectional drawing for demonstrating the motion of the slat at the time of the descent | fall of a raising / lowering cord. It is a top view which shows the state in which the slat is mounted on the bottom rail. It is a top view for demonstrating the side slip prevention effect by a raising / lowering cord. It is a top view for demonstrating the side shift prevention effect by a narrow groove. It is a top view which shows the state which closed the slat completely. It is sectional drawing which shows the fully closed state of a slat. It is a top view which shows the positional relationship of the notch part of a slat and a raising / lowering cord at the time of the fully open state of a horizontal blind. It is a perspective view of the slat which is the principal part of the horizontal blind concerning 2nd Example of this invention. It is a top view of a slat. It is the schematic for demonstrating the relationship between the thickness of a plane slat, and the space | interval of the 1st and 2nd weft, (a) of FIG. 18 shows the thickness and width | variety of a plane slat, (b) of FIG. Indicates the connection interval of the weft yarns. It is sectional drawing which shows the state which provided R in the plane slat. It is sectional drawing which shows the fully closed state of a plane slat. It is sectional drawing which shows the reverse fully closed state of a plane slat. It is a top view which shows the notch part of the slat which is the principal part of the horizontal blind which concerns on 2nd Example of this invention, (a) of FIG. 22 is a notch part which has a side surface perpendicular | vertical to a slat longitudinal direction. FIG. 22 (b) shows a notch having a narrow side surface. It is sectional drawing which shows the notch part of 2nd Example. It is a top view which shows one modification of a slat. It is a perspective view which shows the principal part of the conventional horizontal blind. It is a top view which shows the relationship between the magnitude | size of a notch part, and a raising / lowering cord.

  The best mode of the present invention will be described below with reference to the drawings.

Example 1
FIG. 1 is a perspective view showing a horizontal blind according to a first embodiment of the present invention.
As shown in FIG. 1, the horizontal blind 1 according to this embodiment includes a head box 2, three ladder cords 4A to 4C, and three lift cords 5A to 5C.

The ladder cords 4 </ b> A to 4 </ b> C are cords that support the right side portion, the left side portion, and the center portion of the slats 3 of the plurality of stages as viewed from the room side, and make the angle of the slats 3 adjustable. The ladder cords 4 </ b> A to 4 </ b> C are suspended from the drum mechanisms 6 </ b> A to 6 </ b> C in the head box 2, and their lower ends are connected to the bottom rail 20.
Specifically, as shown by a broken line, one angular shaft 60 is rotatably held by a plurality of supports 63 mounted in the head box 2, and the three drum mechanisms 6A to 6C are provided with three supports. In the state accommodated in 63, it is attached to this square shaft 60. The right end portion of the square shaft 60 is connected to a pulley (not shown) of the operation mechanism 7 via a gear box 71 in a gear mechanism, and an endless operation cord 70 is hung on the pulley.
The ladder cords 4A to 4C are connected to drum mechanisms 6A to 6C that can be rotated by the operation mechanism 7 as described above.

FIG. 2 is a schematic perspective view showing the drum mechanism in which the ladder cord 4A on the right side in the room view and the lifting / lowering cord 5A are connected, and FIG. 3 is a view in which the ladder code 4B on the left side in the room view and the lifting / lowering cord 5B are connected. FIG. 4 is a schematic perspective view showing the drum mechanism, and FIG. 4 is a schematic perspective view showing the drum mechanism in which the ladder cord 4C and the lifting / lowering cord 5C at the center in the room view are connected.
As shown in FIGS. 2 and 3, the drum mechanism 6 </ b> A (6 </ b> B) is a separate and different hanging drum 6.
1 and the winding drum 62 are concentrically fixed to the square shaft 60. And
A long guide hole 63 a is disposed at the bottom of the support 63 at a position almost directly below the hanging drum 61 so as to face the radial direction of the hanging drum 61. One guide roller 65 is disposed below the winding drum 62, and a long guide hole 63 b is disposed at the bottom of the support 63 at a position almost directly below the guide roller 65. A large hole 2 a including two guide holes 63 a and 63 b is provided at the bottom of the head box 2.

As shown in FIG. 1, the ladder cord 4 </ b> A (4 </ b> B) includes a first warp thread 41, a second warp thread 42, and a first weft thread 43 connected between the first and second warp threads 41, 42. And second weft 4
4. As shown in FIGS. 2 and 3, the metal ring 61a is fitted to the outer peripheral surface of the hanging drum 61 by its elastic force, and the upper ends of the first and second warp threads 41 and 42 are made of this metal. Attached to both ends of the ring 61a. Such first and second
The warp yarns 41 and 42 of the head box 2 pass from the suspension drum 61 through the guide hole 63a.
The lower end is connected to the bottom rail 20.
Further, as shown in FIG. 4, the ladder cord 4C is connected to a drum mechanism 6C having the same structure as the drum mechanism 6A (6B). Specifically, the first and second warp threads 4 of the ladder cord 4C
1, 42 are sandwiched by the metal ring 61a of the hanging drum 61 of the drum mechanism 6C, and are drawn out below the head box 2 through the guide hole 63a. And the lower end part is connected to the bottom rail 20.

On the other hand, the raising / lowering cords 5A to 5C are cords for raising and lowering the slat 3, and are drawn out from the head box 2 along the ladder cords 4A to 4C as shown in FIG. It is connected to the rail 20.
Specifically, as shown in FIGS. 2 and 3, the upper end of the lifting / lowering cord 5A (5B) is attached to the take-up drum 62, hung on the guide roller 65, and then through the guide hole 63b to the head box. 2 is pulled out below. The elevating cord 5A (5B) is suspended along the first warp 41 of the ladder cord 4A (4B), and the lower end thereof is connected to the bottom rail 20.
In addition, as shown in FIG. 4, the lifting cord 5C has its upper end attached to the take-up drum 62 of the drum mechanism 6C, hung on the guide roller 65, and then below the head box 2 through the guide hole 63b. Has been drawn to. The lifting / lowering cord 5 </ b> C is suspended along the first warp 41 of the ladder cord 4 </ b> C, and its lower end is connected to the bottom rail 20.

The multi-stage slats 3 are supported by the ladder cords 4A to 4C as described above.
FIG. 5 is a perspective view showing a support state of the slat 3 by the ladder cords 4 </ b> A to 4 </ b> C, and FIG. 6 is a plan view of the slat 3.
As shown in FIG. 5, the slat 3 is a long plate body that is slightly curved, and has notches 31 to 3.
3 is formed on the edge portions 3 a and 3 b of each slat 3.
Specifically, as shown in FIG. 6, the notches 31 and 32 are formed on the edge 3 a on the outdoor side of the both edges 3 a and 3 b in the width direction of the slat 3, and are notched separately. A notch 33 as a portion is formed in the indoor side edge 3b. Then, narrow grooves 31 b and 32 b with which the first weft thread 43 can be engaged are provided in the notches 31 and 32 of the slat 3. Specifically, a narrow narrow groove 31b (32b) extending in the width direction of the slat 3 (vertical direction in FIG. 6) was formed at substantially the center of the back portion of the notch 31 (32).
On the other hand, as shown in FIG. 5, in each stage of the ladder cords 4A to 4C, the first weft 43
And the second weft yarn 44 are connected in a crossing state between the first and second warp yarns 41, 42.
Each slat 3 has the first and second cutouts 31 to 33 facing the crossing portion P of the first and second weft threads 43 and 44 of the ladder cords 4A to 4C on the opposite side. Weft 43, 4
It is sandwiched between four. That is, the notch 31 (32) is positioned in the vicinity of the first warp 41 (41) of the ladder cord 4A (4B), and the notch 33 is in the vicinity of the first warp 41 of the ladder cord 4C. positioned.

The elevating cord 5A (5B) is knitted between the first and second weft threads 43 and 44 as described above, and the elevating cord 5C is not knitted between the first and second weft threads 43 and 44. ,
Arranged along the first warp 41.
FIG. 7 is a plan view showing a support state of the slat 3 and the positional relationship between the ladder cords 4A to 4C and the lifting cords 5A to 5C, and FIG. 8 is a lifting cord for the first warp 41 of the ladder cords 4A to 4C. It is sectional drawing which shows the braided state of 5A-5C.

As described above, the lifting / lowering cord 5A (5 as one lifting / lowering cord (another lifting / lowering cord)
B) is not only arranged along the first warp 41 of the ladder cord 4A (4B) located in the vicinity of the notch 31 (32), but is also cross-connected to the first warp 41 The first and second weft threads 43 and 44 are inserted. However, the lifting / lowering cord 5C has a notch 3
3 is only arranged along the first warp 41 of the ladder cord 4C located in the vicinity of 3.
Specifically, as shown in FIGS. 7 and 8, the end of the first weft 43 on the first warp 41 side is lower than the end of the second weft 44 on the first warp 41 side. The first warp thread 4 so as to be located on the side
1 and the second warp yarn 42 so that the end portion of the first weft thread 43 on the second warp yarn 42 side is located above the end portion of the second weft thread 44 on the second warp yarn 42 side. It is connected to the.
Then, the slat 3 is inserted between the first and second weft threads 43 and 44 with the notches 31 to 33 facing the first warp thread 41 side, and the first weft thread 43 is inserted into the slat 3. The second weft thread 44 is disposed on the upper side of the slat 3.
At this time, as shown in FIG. 7A and FIG. 8A, the lifting / lowering cord 5A passes through the left side, which is one side of the first weft thread 43, and the other side of the second weft thread 44. The first and second weft yarns 43 and 44 are knitted so as to pass through the right side. And the raising / lowering cord 5B is knitted in the reverse direction to the raising / lowering cord 5A. That is, the lifting / lowering cord 5B is shown in FIG.
) And FIG. 8B, the first and second yarns pass through the right side, which is the other side of the first weft thread 43, and pass through the left side, which is one side of the second weft thread 44. It is knitted between the second wefts 43 and 44. Further, as shown in FIG. 7C and FIG. 8C, the lifting / lowering cord 5 </ b> C is arranged along the first warp 41 on the indoor side and attached to the first warp 41. It is inserted into the ring 50.

Next, the operation and effect of the horizontal blind 1 of this embodiment will be described.
In FIG. 1, when the operation cord 70 is operated to rotate the pulley of the operation mechanism 7, the rotation is transmitted to the angular shaft 60 via the gear box 71.
Therefore, when the winding drum 62 of the drum mechanisms 6 </ b> A to 6 </ b> C is rotated by the rotation of the angular shaft 60, the lifting / lowering cords 5 </ b> A to 5 </ b> C are wound around the winding drum 62 or rewound. When the lifting / lowering cords 5A to 5C are wound around the winding drum 62, the bottom rail 20 and the slat 3 are pulled up, and when the lifting / lowering cords 5A to 5C are rewound from the winding drum 62, the bottom rail 20 and the slat 3 Descends.
Further, when the angular shaft 60 of the drum mechanisms 6A to 6C is rotated by the operation of the operation cord 70, the hanging drum 61 is rotated integrally and the slat 3 is rotated via the ladder cords 4A to 4C. Further, when the slat 3 is rotated to the vertical direction, the suspension drum 61 is idled with respect to the metal ring 61a (see FIG. 2) so that the slat 3 is prevented from further rotation in the same direction. It has become.
When the slat 3 is pulled up or lowered to a desired height and then the operation cord 70 is operated in the reverse direction to rotate the angular shaft 60 in the reverse direction, the suspension drum 61 is rotated and the slats are rotated. 3 tilts to the desired angle.

Next, the lateral slip prevention effect exhibited by the horizontal blind will be described.
FIG. 9 is a schematic cross-sectional view for explaining the movement of the slats when the lifting cord is lowered.
FIG. 9 shows a state in which the lifting / lowering cord 5A (5B) is lowered for easy understanding.
In a state where the lifting cords 5A to 5C are wound up and the slat 3 and the bottom rail 20 are completely pulled up, the slat 3 is horizontally overlapped on the bottom rail 20 as shown by reference numeral 3-1 in FIG. It is in the state where it was done.
From this state, the operation cord 70 shown in FIG. 1 is used to rotate the suspension drum 61 and the take-up drum 62 to rewind the lifting cords 5A to 5C, and the first warp 41 to the second warp 42. Lower relative to it.
Then, the slat 3 and the bottom rail 20 descend, and as indicated by reference numeral 3-2 in FIG.
The uppermost slat 3 on the bottom rail 20 rises relative to the bottom rail 20 while tilting downward to the left, and finally the slat 3 is vertical as indicated by reference numeral 3-4 in FIG. It leans to a state close to, and becomes a closed state.

FIG. 10 is a plan view showing a state in which the slat 3 is placed on the bottom rail 20, and FIG. 11 is a plan view for explaining the lateral slip prevention action by the lifting cord 5A (5B). 12 is a plan view for explaining a lateral shift prevention effect by the narrow groove 31b (32b).
As shown in FIG. 9, when the slat 3 is placed on the bottom rail 20, the uppermost slat 3 (3-1) is in a substantially horizontal state. At this time, as shown in FIG. 10, the first warp 41 (41) of the ladder cord 4A (4B) is folded in a meandering manner outside the notch 31 (32) of the slat 3 (3-1). The elevating cord 5A (5B) has a notch 31.
(32) It is in a state of entering.

When the lifting cord 5A (5B) is lowered from the state of FIG. 10, as shown in FIG.
The slats 3 (3-2) are tilted away from the bottom rail 20, and the notches 31 (
32) begins to come off from the lifting / lowering cord 5A (5B) and the first warp 41. As a result, the first
The warp yarn 41 of the slat 3 (3-2) is unwound from the folded state shown in FIG.
) Begins to be applied to the first weft thread 43, the first weft thread 43 is pulled downward, and the first warp thread 41 is drawn toward the slat 3 (3-2). As a result, as shown in FIG. 11, the first warp 41 starts to rotate around the lifting cord 5A (5B).
Thus, when the first warp 41 starts to rotate around the lifting cord 5A (5B), the slat 3 (3-2) moves in the same direction as the first warp 41 by this rotational force. The slat 3 (3-2) may cause a lateral shift.
However, in this embodiment, the elevating cord 5A is knitted so as to pass through the left side of the first weft thread 43 and through the right side of the second weft thread 44, and the elevating cord 5B is connected to the elevating cord 5A. Are knitted in the opposite direction, the first warp 41 near the lifting cord 5A rotates to the right around the lifting cord 5A as shown by the arrow A, and the first warp 41 near the lifting cord 5B As indicated by an arrow B, the warp 41 rotates around the lifting / lowering cord 5B toward the left side.
For this reason, the slats 3 (3-) are generated by the rotational force of the first warp 41 around the lifting cord 5A.
The force A ′ applied to 2) and the force B ′ applied to the slat 3 (3-2) by the rotational force of the first warp 41 around the lifting / lowering cord 5B work in the opposite direction, and the slat 3 (3-2) It functions to reduce the lateral shift of the. In such a state, the lifting cord 5A stretched with a large tension.
(5B) is located in the notch 31 (32), so the slat 3 (3-2)
If it tries to move in the direction of the arrow A ′ (B ′), the edge 31 a (32 of the notch 31 (32)
a) hits the lifting cord 5A (5B) that is strongly stretched. As a result, slat 3 (3-2)
The movement in the right (left) direction is blocked by the lifting / lowering cord 5A (5B).

Then, when the elevating cords 5A and 5B are further lowered from the state of FIG. 11, the slat 3 is greatly inclined as shown by the slat 3 (3-3) in FIG. 9, and the slat is shown in FIG. 3 (3-3) notch 31 (32) is completely detached from the lifting cord 5A (5B) and the first warp 41, and the first warp 41 is around the lifting cord 5A (5B). Is further rotated toward the slat 3 side.
As described above, when the notch 31 (32) is detached from the lifting / lowering cord 5A (5B) and the first warp 41, the lateral slippage preventing action by the lifting / lowering cord 5A (5B) is released, and the slat 3 ( 3-3) may cause a lateral shift.
However, in this embodiment, the narrow groove 31b (32b) is provided substantially at the center of the back of the notch 31 (32). For this reason, the notch part 31 (32) is the raising / lowering cord 5A (5B).
The first weft thread 43 of the ladder cord 4A (4B) is removed from the narrow groove 31b (3
2b). As a result, as shown in FIG. 12, even after the notch 31 (32) is disengaged from the lifting cord 5A (5B), the lateral displacement prevention state of the slat 3 is the first weft 43 and the narrow groove 31b (32b). Is maintained by the engagement.

FIG. 13 is a plan view showing a state in which the slat 3 is completely closed, and FIG.
It is sectional drawing which shows a fully closed state.
When the lifting cords 5A to 5C are rewound from the state of FIG. 12 and the bottom rail 20 is lowered to the lowest position, all the slats 3 are closed as in the slats 3 (3-4) of FIG. Fully closed.
At this time, as shown in FIG. 13 and FIG. 14, the first warp thread 41 completely wraps around the slat 3 side and is positioned in front of the lifting cord 5A (5B). In such a state, the slat 3 (3-4) is sandwiched from the front and the back by the first warp 41 and the second warp 42 that have approached the shortest distance, and the narrow grooves 31b (32b) of the notches 31 (32). ) Is engaged by the first weft thread 43 engaged, and a stable closed state is maintained.

In this state, by operating the operation cord 70 shown in FIG. 1 in the reverse direction and rotating the suspension drum 61 in the reverse direction, all the slats 3 become almost horizontal and the horizontal blind 1 can be fully opened. it can.
FIG. 15 shows a notch 31 (32 in the slat 3 when the horizontal blind 1 is fully opened.
) And the lifting / lowering cord 5A (5B).
When the slat 3 is rotated in the direction opposite to the direction shown in FIGS. 11 to 13 and returned from the closed state shown in FIG. 14 to the horizontal open state, the first warp 41 and the second warp 42 is widened by the rotating slat 3, and the notch 31 (32) moves upward while approaching the first warp 41 and the lifting cord 5 </ b> A (5 </ b> B). And when the slat 3 becomes substantially horizontal, as shown in FIG. 15, the 1st warp 41 and the raising / lowering cord 5A (5B) will be in the state accommodated side by side in the notch part 31 (32). . As a result, the movement of the slat 3 in the lateral direction is prevented by the first warp 41 and the lifting cord 5A (5B) arranged side by side in the notch 31 (32).
That is, in the fully open state of the slat 3, the lateral displacement is prevented by the first warp 41 and the second warp 42 accommodated in the notch 31 (32).

(Example 2)
FIG. 16 is a perspective view of a slat that is a main part of a horizontal blind according to a second embodiment of the present invention, and FIG. 17 is a plan view of the slat.
As shown in FIGS. 16 and 17, the slat applied to the horizontal blind of this embodiment is a flat slat 3 ′.
Specifically, the plane slat 3 ′ is a flat slat having parallel planes 3c and 3d as front and back surfaces of the slat, and has only the notches 31 and 32 on the edge 3a side. In other words, the flat slat 3 'in this embodiment, like the slat 3 of the first embodiment, on the edge 3b side,
It does not have the notch 33 and does not have the narrow grooves 31b to 33b. Further, the pair of side surfaces 31c and 31c (32c and 32c) forming the notch 31 (32) is oriented in the vertical direction with respect to the longitudinal direction of the flat slat 3 '(left and right direction in FIG. 17). Note that the pair of side surfaces 31c and 31c (32c and 32c) can be set to be narrow (the lower opening side in FIG. 17 is narrower than the back side).

Further, the planar slat 3 'is set to a thickness and has a thickness T1.
FIG. 18 is a schematic diagram for explaining the relationship between the thickness of the flat slat 3 ′ and the distance between the first and second weft threads 43 and 44.
As shown in FIG. 18A, the thickness of the planar slat 3 ′ is T1, and the width is L1.
On the other hand, as shown in FIG. 18B, a pair of first and second weft threads 43 and 44 are provided so as to intersect each stage of the ladder cord 4A (4B). The distance (internal dimension) between the connection point Q1 between the first weft thread 43 and the first warp thread 41 and the connection point Q2 between the first warp thread 41 of the second weft thread 44 is T2. The internal dimension between the first and second warp threads 41, 42 is L2.
In this example, the relationship between the thickness T1 of the flat slat 3 ′ and the distance T2 between the first and second weft threads 43 and 44 was set to “T2 / T1 = 0.92 to 1.43”. . In addition, “T2 / T1 = 0.92 to 1.35 (or 1.03)” is preferable.
Further, the width L1 of the plane slat 3 ′ and the internal dimension L2 between the first and second warps 41, 42
Was set to “L2 / L1 = 0.99 to 1.13”. Preferably, “L”
2 / L1 = 0.99 to 1.05 ". And "T2 / T1 = 0.92 to 1.03,
If L2 / L1 = 0.99 to 1.05 ", the flat slat 3 'inserted between the first and second weft threads 43 and 44 is held tight against the notch 31 (32). The

FIG. 19 is a cross-sectional view showing a state in which R is provided on the planar slat 3 ′.
As shown in FIG. 19, the slat angle R can be set above and below the end surface of the flat slat 3 ′. In such a case, the slat angle R is set to a half or less of the slat thickness T1.
Further, the ratio L3 / L1 of the notch depth L3 of the notch 31 (32) to the slat width L1.
Is preferably set to 0.09 to 0.12.

Next, the operation and effect of the horizontal blind 1 of this embodiment will be described.
FIG. 20 is a cross-sectional view showing a fully closed state in which the upper surface of the flat slat 3 ′ is inclined to the limit toward the outdoor side, and FIG. It is sectional drawing which shows a closed state.
First, as shown by the arrow in FIG. 20, if the second warp thread 42 of the ladder cord 4A (4B) is pulled up and the first warp thread 41 is allowed to be pulled down by the same amount, the edge 3b of the flat slat 3 '
The side is lifted, the edge 3a side is down, and the notch 31 (32) faces downward. Thus, when the upper surface 3c of the flat slat 3 'is inclined toward the outdoor side, the notch 31 (32) faces downward, so that at least the lower first weft thread 43 and the lifting cord 5
A (5B) enters deeply into the notch 31 (32), and these are notched 31 (
32). For this reason, when the upper surface 3c of the flat slat 3 'is inclined to the outdoor side, including the fully closed state in which the upper surface 3c of the flat slat 3' is inclined to the limit toward the outdoor side, There will be no detachment.

Next, as shown in FIG. 21, the first warp 41 of the ladder cord 4A (4B) is pulled up,
If the second warp thread 42 is allowed to be pulled down by the same amount, the edge 3a side of the flat slat 3 'is lifted, and the slat rotates in a direction in which the notch 31 (32) faces upward. Thus, when the upper surface 3c of the flat slat 3 ′ is inclined toward the indoor side, the notch 31 (32) is directed upward, so that the first weft thread 43 is removed from the notch 31 (32). It moves relatively in the direction of escaping, and the contactable length of the weft thread to the cut-out side surface decreases. Then, as shown in FIG. 21, when the flat slat 3 'is in a so-called reverse fully closed state in which the flat slat 3' is inclined to the indoor side to the limit, the contactable length of the first weft thread 43 to the notched side surface is minimized. Also, the upper surface 3 of the plane slat 3 '
If c inclines indoors, the 2nd weft 44 will move relatively with respect to the notch part 31 (32), and if the plane slat 3 'will be in a reverse fully closed state, the 2nd weft 44 will be Notch 31 (3
2) Get in.
In addition, in this embodiment, flat slats 3 'having parallel planes 3c and 3d as front and back surfaces of the slats are applied as slats, so that they are different from the curved slats 3 applied in the first embodiment. The first and second weft threads 43, 44 are the planes 3d, 3 of the plane slat 3 '.
c. Furthermore, the flat slat 3 'is set to be thick, and the notch 31 (32) is also thick. For this reason, as shown in the partial enlarged view of the box A in FIG. 21, the two first and second weft threads 43 and 44 and the lifting / lowering cord 5A (5B) are securely in the notch 31 (32). Keep it in the way. As a result, the two first and second wefts 43, 44 and the lifting cord 5A (5B
) Reliably engages with the notch 31 (32) to prevent lateral displacement and disengagement of the flat slat 3 '.
That is, according to this embodiment, not only when the planar slat 3 ′ is in the fully closed state,
Even in the reverse fully closed state, it is possible to prevent the lateral slat 3 'from slipping off or coming off.
Since other configurations, operations, and effects are the same as those in the first embodiment, description thereof is omitted.

(Example 3)
FIG. 22 is a plan view showing a notch portion of a slat which is a main part of a horizontal blind according to a second embodiment of the present invention, and FIG. 23 is a cross-sectional view showing the notch portion of the second embodiment. is there.
In the above embodiment, the notch 31 (32) having a rectangular shape in plan view is exemplified as the notch. However, in this embodiment, the structure of the notch is different from that of the second embodiment.
Specifically, as shown in (a) and (b) of FIG.
Notched portion 31 ′ (32 ′) provided with tapered portion 31b ′ (32b ′) in 1a ′ (32a ′)
) Was applied.
However, in such a case, as shown in FIG. 23, the side surface 31c ′ (32c ′) of the depth L4 having an angle perpendicular to the longitudinal direction of the slat (the left-right direction in FIG. 22) and the depth having an outer narrow angle. A side surface 31d '(32d') of L4 is provided.
Other configurations, operations, and effects are the same as those of the second embodiment, and thus description thereof is omitted.

In addition, this invention is not limited to the said Example, A various deformation | transformation and change are possible within the range of the summary of invention.
For example, in the above-described embodiment, an example in which the present invention is applied to the uniaxial winding-type horizontal blind 1 has been described, but it is needless to say that the present invention can also be applied to a horizontal blind in which a ladder cord and a lifting / lowering cord can be operated independently. It is.
In the above embodiment, the present invention is applied to a horizontal blind having three ladder cords and three lifting cords. However, the ladder cords and the lifting cords may be plural. The number is not limited to three.

Moreover, in the said Example, the 1st weft thread 43 and the 2nd weft thread 44 of the ladder cords 4A-4C are connected in the crossing state between the 1st and 2nd warp threads 41 and 42, and the crossing part P is connected. Although the example which provided was shown, it is not limited to this, without providing the cross | intersection part P, the 1st weft 43 and the 2nd weft 44 are made parallel, and the 1st and 2nd warps 41, Ladder cord 4A connected to 42
Horizontal blinds with ~ 4C are also within the scope of this invention.
Moreover, in the said Example, although the slat which provided the narrow groove only in the notch parts 31 and 32 was illustrated, as shown in FIG. 24, the narrow grooves 31b-33b are provided in all the notch parts 31-33, respectively. Horizontal blinds equipped with open slats are also within the scope of the present invention. Note that horizontal blinds in which all the cutouts do not have narrow grooves are not excluded from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Horizontal blind, 2 ... Head box, 3, 3d, 3-1 to 3-3 ... Slat, 3a, 3b ... Edge part, 3c, 3d ... Plane, 4A-4C ... Ladder cord, 5A-5
C: Lifting cord, 6A to 6C ... Drum mechanism, 7 ... Operation mechanism, 20 ... Bottom rail,
31-33, 31 ', 32' ... Notch part, 31a, 32b ... Edge part, 31a ', 3
2a '... semicircle notch, 31b-33b ... narrow groove, 31b', 32b '... taper part, 3
1c, 31c ', 32c', 31d ', 32d' ... side face, 41, 42 ... warp, 43
44 ... Weft, 50 ... Guide ring, 60 ... Square shaft, 61 ... Hanging drum, 61a
... Metal ring, 62 ... Winding drum, 63 ... Support, 63a, 63b ... Guide hole, 65 ... Guide roller, 70 ... Operation code, 71 ... Gear box, P ... Intersection.

Claims (7)

A plurality of ladder cords pulled out from the head box and connected to the bottom rail at the lower end supports a plurality of slats so that the angle can be adjusted, and pulled out from the head box along each ladder cord and connected to the bottom rail at the lower end. A horizontal blind capable of moving the slats up and down with a plurality of lifted cords,
Each ladder cord is formed of first and second warp yarns and first and second weft yarns that are connected between the first and second warp yarns at each step and support the slats at each step. ,
At least two notches are formed on one edge of both edges in the width direction of the slat, and each slat is moved to the first warp while the notches are close to the first warp. Between the two wefts,
One lifting cord is disposed along the first warp located near one of the notches, and is passed between the first and second wefts connected to the first warp, Another one lifting cord is arranged along the first warp located in the vicinity of the other notch, and is passed between the first and second wefts connected to the first warp. ,
and,
The one lifting cord is knitted so as to pass through one side of the first weft and the other side of the second weft,
The other one lifting cord is knitted so as to pass through the other side of the first weft and pass through one side of the second weft.
A horizontal blind characterized by that. The horizontal blind according to claim 1, wherein
Forming a notch separate from the notch on the other edge of both edges in the width direction of the slat;
The lifting cord is arranged along the first warp located in the vicinity of the notch,
A horizontal blind characterized by that. The horizontal blind according to claim 1 or 2,
A narrow groove that can be engaged with any of the first and second wefts is provided at the back of the notch.
A horizontal blind characterized by that. The horizontal blind according to claim 1, wherein
The slat is a thick flat plate slat,
A horizontal blind characterized by that. The horizontal blind according to claim 4,
The relationship between the thickness T1 of the flat slats and the distance T2 between the connection point of the first weft and the first warp and the connection point of the second weft and the first warp,
T2 / T1 = 0.92 to 1.43
Set to
A horizontal blind characterized by that. The horizontal blind according to claim 4 or 5,
The relationship between the width L1 of the slat and the internal dimension L2 between the first and second warps 41 and 42 in a state where the first and second wefts are stretched,
L2 / L1 = 0.99 to 1.13
Set to
A horizontal blind characterized by that. The horizontal blind according to any one of claims 4 to 6,
The pair of side surfaces constituting the notch portion of the flat slat was set to be perpendicular or narrow with respect to the longitudinal direction of the slat.
A horizontal blind characterized by that.

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