JP2006241859A - Blind - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a blind capable of preventing the rotation of slats of an upper slat group and a lower slat group from being obstructed. <P>SOLUTION: An insertion hole is formed in each of a plurality of the upper slats forming the upper slat group 14. A lower rudder cord 17 comprises a rudder cord 17A positioned at a lower slat group 15 portion and an extension part 17B positioned at the upper slat group 14 portion. The extension part 17B of the lower rudder cord 17 is inserted into the through-hole of the upper slat. Ring-like members 40 and 41 are fitted to proper upper and lower areas where cords 17a and 17a at the front and rear of the extension part 17B are positioned. An interval between the cords 17a and 17b at the front and rear of the extension part 17B of the lower rudder cord 17 in which the ring-like members 40 and 41 are positioned between upper and lower interval holding means is held smaller than that in the case that the ring-like members are absent. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention has an upper ladder cord that supports the upper slat group and a lower ladder cord that supports the lower slat group, and each of the ladder cords can be separately tilted, and the upper slat group and the lower slat group It relates to blinds that can be rotated separately.

  Conventionally, what was described in patent document 1 is known as this kind of blind. The blind described in this document divides a large number of slats into two groups so that each slat group can be opened and closed separately by an individual ladder cord. The ladder cord that opens and closes the lower slat group is an upper slat group. The slat presser is installed in the position corresponding to the through-hole for the lifting / lowering cord at the lowermost slat of the upper slat set, and the cord ring attached to the slat presser is the ladder code when the lower slat set is opened and closed. It can be rotated in accordance with the up and down of the pair. Thus, each set of slats can be opened and closed individually, so that the opening and closing operation of the lower slat set does not affect the upper slat set.

JP-A-8-165869

  However, in the conventional blind described above, the ladder cord that opens and closes the lower slat set of the portion through which the lowermost slat is inserted by the cord ring does not interfere with the upper slat set, but the ladder cord moves upward as the ladder cord moves upward. Depending on the diameter of the rotating drum to which the upper end is connected, the front and rear widths of the front and rear cords are increased, so that it interferes with the uppermost slat of the upper slat group and eventually affects the opening and closing of the upper slat group. There is a problem of going out.

  In particular, in the type of blind that lifts and lowers the blind by winding or unwinding the lifting cord on the winding drum, the upper end of the ladder cord is connected compared to the blind that directly operates the lifting cord by hand. Since the diameter of the rotating drum tends to be set larger, the problem that the distance between the front and rear widths of the front and rear cords is increased.

  This invention is made | formed in view of this subject, and it aims at providing the blind which does not inhibit rotation of each slat of an upper slat group and a lower slat group.

In order to achieve the above-described object, the invention according to claim 1 includes an upper ladder cord that supports the upper slat group and a lower ladder cord that supports the lower slat group, each ladder cord being In the blind that can be tilted separately and the upper slat group and the lower slat group can be rotated separately,
Each of the plurality of upper slats constituting the upper slat group is formed with an insertion hole, and the lower ladder cord is composed of a ladder cord portion located in the lower slat group portion and an extension portion located in the upper slat group portion. The extension portion of the lower ladder cord is inserted through the insertion hole of the upper slat, and interval holding means are provided at appropriate vertical positions where the front and rear cords of the extension portion of the lower ladder cord are located. The means is characterized in that the distance between the cords before and after the extension portion of the lower ladder cord between the upper and lower spacing holding means is kept smaller than that without the spacing holding means.

  According to a second aspect of the present invention, in the first aspect of the present invention, the distance holding means is configured so that the distance between the front and rear cords of the extension portion of the lower ladder cord is equal to or smaller than the front and rear width of the insertion hole of the upper slat. It is characterized by holding.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the interval holding means is provided near the uppermost slat and the lowermost slat of the upper slat group.

  According to a fourth aspect of the present invention, in the apparatus according to any one of the first to third aspects, the distance holding means is a ring-shaped member through which the cords before and after the extension portion are inserted and attached independently. It is characterized by being.

  The invention according to claim 5 is the one according to any one of claims 1 to 4, wherein the upper and lower slat groups and the upper and lower slat groups as a whole are moved up and down, and the upper end of the lift code is wound up and A winding drum connected to be unwound, and the upper end of the lower ladder cord is connected to a rotating drum arranged concentrically with the winding drum.

  According to the present invention, the distance between the cords before and after the extension portion of the lower ladder cord between the interval holding members is held smaller by the interval holding member than in the case where there is no interval holding member. It is possible to prevent the cord from being caught in the insertion hole of the upper slat. Therefore, the tilting operation of one ladder cord for rotating the slat group is not hindered by the other ladder cord, and the other ladder cord is not affected by the tilting operation of one ladder cord. Independence of rotation of the slat group can be ensured.

  According to the second aspect of the present invention, the distance holding means holds the distance between the front and rear cords of the extension portion of the lower ladder cord so as to be equal to or less than the front and rear width of the insertion hole of the upper slat. It is possible to prevent the ladder cord from being caught on the front and rear ends of the insertion hole of the upper slat.

  According to the third aspect of the present invention, the distance holding means is provided near the uppermost slat and the lowermost slat of the upper slat group, so that the distance between the cords before and after the extension portion of the lower ladder cord is increased. It can be kept small throughout the part corresponding to the group.

  According to the invention described in claim 4, the ring-shaped member is added to the existing configuration without newly providing the diameter of the rotating drum or the slat clip, and the cords before and after the extension portion are inserted into the ring-shaped member. That is, the increase in manufacturing cost can be suppressed.

  According to the invention described in claim 5, even when the diameter of the winding drum is increased, the diameter of the rotating drum is increased accordingly, and the distance between the cords before and after the upper end of the lower ladder cord is increased, the distance is maintained. The member can prevent the lower ladder cord from being caught in the insertion hole of the upper slat.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of a blind according to an embodiment of the present invention.
In the figure, the blind 10 has a head box 12 attached to a fixed part such as a wall surface or a window frame by a bracket.

  The blind 10 has an upper slat group 14 and a lower slat group 15, and a plurality of upper ladder cords 16 and lower ladder cords 17 are suspended from the head box 12, respectively, as shown in FIG. Further, the upper slat group 14 and the intermediate bottom rail 22 below the upper slat group 14 are supported in an aligned state by the middle step 16b of the upper ladder cord 16, and the lower slat group 15 by the middle step 17b of the lower ladder cord 17. The bottom rail 18 below the lower slat group 15 is supported in an aligned state. The intermediate bottom rail 22 is formed by fitting a rail member to the lowermost slat of the upper slat group 14, but the rail member is fitted and the intermediate rail 22 is not provided and the slat remains as it is. In this case, the slat is the lowermost slat of the upper slat group 14.

  The lower and upper cords 16a, 16a of the upper ladder cord 16 are connected to the intermediate bottom rail 22 whose lower ends are arranged between the upper slat group and the lower slat group, and the upper ends thereof are arranged in the head box 12. And connected to the first rotating drum 24 in the head box 12. A first shaft 26 extending in the longitudinal direction in the head box 12 passes through each first rotating drum 24. The first shaft 26 is rotationally driven by a first motor 28 disposed in the head box 12, and the rotation is transmitted to the first rotating drum 24.

  As shown in FIG. 2, the lower ladder cord 17 has a portion below the intermediate bottom rail 22 corresponding to the lower slat group 15 portion composed of two front and rear cords 17a, 17a and a middle step 17b. Whereas the ladder cord portion 17A is formed, the portion above the intermediate bottom rail 22 corresponding to the upper slat group 14 portion is composed of only two front and rear cords 17a, 17a and is an extension portion without the middle step 17b. 17B. The lower ends of the front and rear cords 17 a and 17 a are connected to the bottom rail 18, and the upper ends thereof are introduced into the head box 12 and connected to the second rotary drum 30 in the head box 12. A second shaft 32 extending in the longitudinal direction through the head box 12 passes through each second rotating drum 30. The second shaft 32 is rotationally driven by a second motor 34 disposed in the head box 12, and the rotation is transmitted to the second rotating drum 30.

  A plurality of elevating tapes 20 are suspended from the head box 12, and the lower end of the elevating tape 20 is inserted through insertion holes 14 a and 15 a formed in the slats of the slat groups 14 and 15, and the bottom rail. 18 is connected. The upper end of the lifting / lowering tape 20 is introduced into the head box 12 and is connected to the winding drum 36 so as to be wound and unwound. The second rotating drum 30 is connected to the second shaft 32 via a clutch spring, and rotates with the second shaft 32 within a predetermined angle range. Is not rotatable relative to the second shaft 32 and always rotates together with the second shaft 32.

  In addition, although the example which drives the slat groups 14 and 15 by electricity is demonstrated here, it is not restricted to this, The 1st rotating drum 24 and the 2nd rotating drum 30 are rotationally driven manually. Of course, it may be.

  As shown in FIG. 4, a second insertion hole 14 b is formed in each slat of the upper slat group 14 in addition to the insertion hole through which the elevating tape 20 is inserted, and the insertion hole 14 b is formed in the lower ladder cord 17. The extension part 17B is inserted. The insertion hole 14b can be a common hole with the insertion hole 14a for lifting tape insertion, but is preferably another hole and is a long hole extending in the front-rear direction. Then, ring-shaped members 40 and 41 as spacing holding means are respectively provided above the uppermost slat of the upper slat group 14 corresponding to the vertical position of the extension 17B and below the intermediate bottom rail 22 which is the lowermost slat. The front and rear cords 17a and 17a of the extension portion 17B are inserted through the center openings of the ring-shaped members 40 and 41, which are provided independently. The center opening of each ring-shaped member 40, 41 is smaller than the width before and after the long hole insertion hole 14b formed in the slat, and accordingly, the lower portion constituting the extension 17B between the ring-shaped members 40, 41. The distance between the front and rear cords 17a and 17a of the ladder cord 17 is held by the ring-shaped members 40 and 41 to be smaller than the front and rear width of the insertion hole 14b. Further, the distance between the front and rear cords 17a, 17a above the ring-shaped member 40 is widened toward the head box 12, and has a size corresponding to the diameter of the rotary drum 30 to which the upper end is connected. Will spread.

  The ring-shaped member 40, which is an upper space retaining means, is placed above the uppermost slat of the upper slat group 14, and the lower ring-shaped member 41 is disposed below the insertion hole 14b of the lowermost slat. The distance between the front and rear cords 17a, 17a is increased toward the lower slat group, and is thus pushed up toward the lower surface of the lowermost slat.

  In the blind constructed as described above, when the first and second motors 28 and 34 are driven to rotate any of the upper and lower slat groups 14 and 15 arbitrarily, the shafts 26 and 32 connected thereto are driven. And the rotating drums 24 and 30 rotate. Depending on the rotation of the rotary drums 24, 30, between the front and rear cords 16 a, 16 a of the upper ladder cord 16 connected to the rotary drum 24, or before and after the lower ladder cord 17 connected to the rotary drum 30. A relative displacement occurs between the cords 17a and 17a, whereby the middle stage of the corresponding ladder cord tilts, and the slat supported by the middle stage rotates.

  Considering the case where the middle stage 16b of the upper ladder cord 16 is tilted, the ring-shaped members 40 and 41 are rotated in accordance with the rotation of the upper slat group 14, as shown in an enlarged manner in FIG. Since the distance between the front and rear cords 17 a and 17 a of the extension portion 17 B of the lower ladder cord 17 is restricted, the lower ladder cord 17 does not hinder the rotation of the upper slat group 14. Since the ring-shaped members 40 and 41 can move back and forth with respect to the insertion hole 14b, the ring-shaped members 40 and 41 can move to an appropriate position in accordance with the rotation of the slat. You can keep it out of the way. If the ring-shaped members 40 and 41 are not provided, the cords 17a and 17a before and after the extension portion 17B of the lower ladder cord 17 are inserted into the insertion holes 14b of the slats of the upper slat group 14, as shown in FIG. Therefore, the upper slat group 14 cannot be freely rotated under the influence.

  Further, when the middle step 17b of the lower ladder cord 17 is tilted, the cords 17a and 17a before and after the extension portion 17B cause relative displacement while maintaining the front-rear distance determined by the center opening of the ring-shaped members 40 and 41. However, since the insertion hole 14b of the upper slat group 14 is not affected, the upper slat group 14 does not rotate carelessly.

  Therefore, when one ladder code moves, rotation of the slat group corresponding to the moved ladder code is not hindered, and the slat group corresponding to the ladder code not moved unintentionally rotates. There is nothing. In this way, the independence of the rotation of the slat group can be ensured.

  Since it is only necessary to add the ring-shaped members 40 and 41 to the existing configuration, and it is only necessary to insert the extension portion 17B through the ring-shaped members 40 and 41, an increase in manufacturing cost can be suppressed.

  6 and 7 are views corresponding to FIG. 2 and FIG. 3 showing the second embodiment of the present invention. In this example, the interval holding means is not provided in the extension portion 17B, but is provided in the intermediate bottom rail 22 which is the uppermost slat and the lowermost slat of the upper slat group 14. That is, the insertion holes 14b of the uppermost slat and the lowermost slat are provided with portions 40-1 and 41-1 having narrower front and rear widths compared to the insertion holes 14b of the other slats. 41-1 constitutes the interval holding means. In this case, the cords 17a and 17a before and after the extension portion 17B interfere with the uppermost slat and the lowermost slat, but the upper slat group 14 other than those does not interfere with the slat, and the lower ladder. It is possible to prevent the cord 17 from inhibiting the rotation of the upper slat group 14.

  FIG. 8 is a view corresponding to FIG. 2 showing a third embodiment of the present invention. In this example, a guide member 42 having an opening smaller than the front and rear widths of the insertion hole 12a provided in the lower portion of the head box 12 is provided as the upper space holding means, and the lowermost step as the lower space holding member. The guide member 43 is provided on the intermediate bottom rail 22 which is a slat and has an opening equivalent to the guide member 42 which is an upper interval holding member.

Usually, the front and rear widths of the insertion holes 12 a formed in the lower portion of the head box 12 are set so that the front and rear cords 17 a and 17 a of the lower ladder cord 17 whose upper end is connected to the rotary drum 30 do not interfere with the head box 12. In this embodiment, the front and rear widths of the insertion holes 12a are made larger than the front and rear widths of the insertion holes 12a and 14b so that the front and rear cords 17a and 17a interfere with each other. A guide member 42 having a narrowed central opening is provided, and the front and rear cords 17 a and 17 a are inserted into the central opening of the guide member 42.
In this case, the same operation and effect as in the first embodiment can be obtained.

  In addition, the space | interval holding | maintenance means can be arrange | positioned by arbitrary structures to arbitrary places up and down where the code | cord | chord before and behind an extension part is located not only what was illustrated.

It is a front view of the blind of this invention. It is sectional drawing seen along the vertical axis | shaft of the blind of FIG. FIG. 3 is a partially enlarged view of FIG. 2, (a) shows a state where the upper slat group is horizontal, and (b) shows a state where the upper slat group is rotated and inclined. It is a partial top view of an upper slat. FIG. 3 is a view corresponding to FIG. 2 according to a conventional configuration. It is sectional drawing of the upper part of the blind by the 2nd Embodiment of this invention. FIG. 7 is a partially enlarged view of FIG. 6, (a) shows a state where the upper slat group is horizontal, and (b) shows a state where the upper slat group is rotated and inclined. FIG. 6 is a cross-sectional view of an upper part of a blind according to a third embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Blind 14 Upper slat group 14b Insertion hole 15 Lower slat group 16 Upper ladder cord 17 Lower ladder cord 17a, 17a Front and rear cord 17A Ladder cord portion 17B Extension portion 40, 41 Ring-shaped member (interval holding means)
40-1, 41-1 The part which narrowed the front-back width | variety (space | interval holding means)
42, 43 Guide member (interval holding means)

Claims (5)

It has an upper ladder cord (16) that supports the upper slat group (14) and a lower ladder cord (17) that supports the lower slat group (15), and each ladder cord can be tilted separately. In the blind where the upper slat group and the lower slat group can be rotated separately,
Each of the plurality of upper slats constituting the upper slat group (14) is formed with an insertion hole (14b), and the lower ladder cord (17) includes a ladder cord portion (17A) located in the lower slat group portion and an upper portion. An extension portion (17B) located in the slat group portion, and the extension portion (17B) of the lower ladder cord passes through the insertion hole (14b) of the upper slat, and the extension portion of the lower ladder cord Interval holding means (40, 41, 40-1, 41-1, 42, 43) are provided at appropriate vertical positions where the front and rear cords (17a, 17a) of (17B) are located. The blind is characterized in that the distance between the cords before and after the extension portion of the lower ladder cord between the gap holding means is kept smaller than that without the gap holding means.   The interval holding means (40, 41, 40-1, 41-1, 42, 43) is such that the interval between the front and rear cords of the extension portion of the lower ladder cord is equal to or smaller than the front and rear width of the insertion hole of the upper slat. The blind according to claim 1, wherein the blind is held in the window.   The said space | interval holding means (40, 41, 40-1, 41-1, 43) is provided in the upper slat group (14) vicinity of the uppermost slat and the lowermost slat. The listed blind.   The said space | interval holding | maintenance means (40, 41) is a ring-shaped member by which the code | cord | chords (17a, 17a) before and behind an extension part (17B) are inserted, and each is attached independently. The blind according to any one of the above.   A lifting / lowering cord (20) for raising and lowering the upper slat group and the lower slat group as a whole, and a winding drum (36) to which an upper end of the lifting / lowering cord (20) is coupled so as to be wound and unwound, The blind according to any one of claims 1 to 4, wherein an upper end of the lower ladder cord is connected to a rotary drum (30) arranged concentrically with the winding drum.

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