JP4430527B2 - blind - Google Patents

Description

  The present invention relates to a blind having an upper ladder cord that supports an upper slat group and a lower ladder cord that supports a lower slat group, each of which can be tilted separately.

  Conventionally, what was described in patent document 1 as this kind of blind is known.

  The blind includes first and second rotating shafts that are rotatably mounted in the upper box, first and second tilting drums attached to the respective rotating shafts, an upper box, and a middle box. A first slat group suspended by the first slat tilting cable and a second slat group suspended by the second slat tilting cable between the inner box and the lower box. The first and second slat groups are individually angle-changed.

  This type of blind with two slat groups capable of different rotational movements can be blocked and day-by-block by one blind, and reflected light can be easily introduced indoors according to the position of the sun. Therefore, the lighting energy can be saved, and the demand for it has been increasing in recent years.

Japanese Utility Model Publication No. 62-3517

  By the way, in the structure of patent document 1, the ring part is formed in the position where each middle step of the vertical cord of the 1st slat tilting cable is formed, and the upper part of the 2nd slat tilting cable is formed in this ring part. It is inserted. It is considered that when the slat group is folded by this ring portion, the second slat tilting cord is prevented from hanging down.

  However, in the configuration of Patent Document 1, when one slat tilting line is moved to rotate one slat group, the second slat tilting line is relative to the first slat tilting line. However, because the second slat tilting cable interferes with the ring portion and gets caught, some of the slats that should rotate cannot rotate normally, or some of them should rotate There is a problem that the slats that are not rotated inadvertently.

  The present invention has been made in view of such a problem, and prevents the lower ladder cord supporting the lower slat group from hanging down without inhibiting the rotation of the slats of the upper slat group and the lower slat group. Its purpose is to provide a blind that can be used.

In order to achieve the above-described object, the invention described in claim 1 includes an upper ladder cord that supports the upper slat group and a lower ladder cord that supports the lower slat group, and each ladder cord is separately provided. In the blind that can be tilted, the upper slat group and the lower slat group can be rotated separately, and the upper slat group and the lower slat group can be moved up and down as a whole,
The lower ladder cord is composed of a ladder cord portion located in the lower slat portion and an extension portion located in the upper slat portion, and the upper ladder cord and the extension portion of the lower ladder cord are appropriately spaced in the vertical direction. Each is connected by a connecting member that can be bent.

  The invention according to claim 2 is characterized in that the connecting member according to claim 1 has such a length that no tension is applied when the upper ladder cord and the lower ladder cord are tilted.

  The invention according to claim 3 is characterized in that the connecting member according to claim 1 has such a length that no tension is applied when the upper slat group and the lower slat group are rotated in opposite directions.

  According to a fourth aspect of the present invention, the connecting member according to the first aspect of the present invention has such a length that no tension is applied when the upper slat group and the lower slat group are rotated to the end positions in opposite directions. It is characterized by.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects, at least one of the extension portions of the upper ladder cord and the lower ladder cord has a front and rear of the one ladder cord. An annular portion is formed at a predetermined position of the vertical cord, and the annular portion and the connecting member are coupled to each other.

  The invention according to claim 6 is the one according to any one of claims 1 to 5, wherein the connecting position of the upper ladder cord by the connecting member is between two upper and lower stages adjacent to the upper ladder cord. It is characterized by being in between.

  According to the present invention, when the slat group is raised as a whole, the extension part of the lower ladder cord is restrained by the upper ladder cord by the connecting member, so that it does not hang down and deteriorate the appearance. Can do. In order to loosely restrain the extension portion of the lower ladder cord to the upper ladder cord by means of a foldable connecting member, the tilting operation of one ladder cord for rotating the slat group is inhibited by the other ladder cord. In addition, the other ladder cord is not affected by the tilting operation of one ladder cord, and the independence of the rotation of the slat group can be ensured.

  According to the second to fourth aspects of the present invention, since the tension is not applied to the connecting member, the tension is not transmitted from one ladder cord to the other ladder cord, and the slat group is reliably rotated. The tilting operation of one ladder cord is not hindered by the other ladder cord, and the other ladder cord is not affected by the tilting operation of one ladder cord. In particular, according to the fourth aspect of the present invention, each slat group can be reliably rotated to the maximum rotation position.

  According to the fifth aspect of the present invention, the coupling member can be easily coupled to the upper ladder cord or the extension portion of the lower ladder cord by coupling the ring portion and the coupling member.

  According to invention of Claim 6, it can prevent that a connection member interferes with the edge part of a middle stage or a slat by making the connection position of the ladder code for upper parts by a connection member between middle stages.

  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 bar 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 and the lower bar cord 17 by the middle step 17b. A bottom rail 18 below the lower slat group 15 is supported in an aligned state.

  The vertical cords 16a, 16a of the upper ladder cord 16 are connected to the intermediate bar 22 whose lower ends are arranged between the upper slat group and the lower slat group, and the upper ends thereof are introduced into the head box 12. Then, it is 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.

  The lower ladder cord 17 has a ladder cord portion 17A composed of two vertical cords 17a and 17a and a middle stage 17b at a portion below the intermediate bar 22 corresponding to the lower slat group 15 portion. On the other hand, the part above the intermediate bar 22 corresponding to the upper slat group 14 is an extension part 17B which is composed of only two vertical cords 17a and 17a and does not have a middle stage 17b. The lower ends of the vertical cords 17 a and 17 a are connected to the bottom rail 18, and the upper ends thereof are introduced into the head box 11 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.

  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.

  A plurality of elevating tapes 20 are suspended from the head box 12, and the lower ends of the elevating tapes 20 are connected to the bottom rails 18 through the slat groups 14 and 15. The upper end of the lifting / lowering tape 20 is introduced into the head box 12 and is connected to a lifting / lowering drum (not shown) so as to be wound and unwound. The elevating drum can be rotated simultaneously by the rotation of either one of the motors 28 and 34.

  Further, a connecting string portion 40 as a foldable connecting member is provided between the extension portion 17 </ b> B of the lower ladder cord 17 and the upper ladder cord 16. In this example, the connecting string portion 40 extends from the vertical cord 17a of the lower ladder cord 17 at a predetermined interval in the vertical direction. The other end of the connecting string portion 40 is coupled to the vertical cord 16 a of the upper ladder cord 16. Arbitrary methods are possible as a method of coupling, and it is conceivable to couple directly or by coupling via a coupling tool such as a clip. In this example, a ring portion 16c is formed on the vertical cord 16a of the upper ladder cord 16 at a predetermined interval in the vertical direction and in the vicinity of the middle between the upper and lower middle steps 16b and 16b. The end and the ring portion 16 c are joined by the clip 42.

  The connecting string portion 40 has a flexible and elongated shape, and the length thereof is larger than the horizontal interval between the upper ladder cord 16 and the lower ladder cord 17. As shown in FIG. 3, the connecting string portion 40 is set to have a slack in a state where both the upper slat group 14 and the lower slat group 15 are at a horizontal angle.

  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 and 30, the vertical cords 16 a and 16 a before and after the upper ladder cord 16 connected to the rotary drum 24, or the front and rear of the lower ladder cord 17 connected to the rotary drum 30. Relative displacement occurs between the vertical cords 17a and 17a, whereby the middle stage of the corresponding ladder cord tilts and the slat supported by the middle stage rotates.

  The connecting string portion 40 changes in accordance with the relative displacement of the upper or lower ladder cords 16 and 17.

  4 and 5 show a state in which only the lower slat group 15 is rotated until it is fully closed, and FIGS. 6 and 7 show the maximum rotation until the upper and lower slat groups 14 and 15 are fully closed, respectively. In the case of FIGS. 6 and 7, the upper slat group 14 and the lower slat group 15 rotate in the opposite directions to the end position. In the case of FIG.4 and FIG.5, although the slack remains in the connection string part 40, in the case of FIG.6 and FIG.7, the amount of slack has decreased.

  As shown in FIGS. 4 to 7, the length of the connecting string portion 40 is such that no tension is applied when the upper ladder cord 16 and the lower ladder cord 17 are arbitrarily tilted. In particular, as shown in FIGS. 6 and 7, the length should be such that no tension is applied when the upper slat group 14 and the lower slat group 15 are rotated in opposite directions. 6 and FIG. 7, that is, when the upper slat group 14 and the lower slat group 15 are rotated to the end positions in the opposite directions, it is preferable that the length is such that no tension is applied to the connecting string portion 40. . By setting in this way, the connecting string portion 40 is not always tensioned, and therefore the movement of one ladder code does not affect the other ladder code, and therefore corresponds to the moved ladder code. Therefore, the slat group corresponding to the ladder cord that has not moved is not rotated unintentionally. In this way, the independence of the rotation of the slat group can be ensured.

  Next, when the elevating drum 20 is rotated and the elevating cord 20 is wound up, the bottom rail 18 rises, and accordingly, each slat of the slat groups 14 and 15 rises in order from the lower side. 8 and 9 show a state in which the slat groups 14 and 15 are completely raised. At this time, the extension portion 17B of the lower ladder cord 17 is constrained to the upper ladder cord 16 by the connecting string portion 40, so that the extension portion 17B does not droop down greatly and is folded in an attractive manner.

  In the illustrated example, the connecting string portion 40 is coupled between the upper and lower adjacent middle steps 16b of the upper ladder cord 16, whereby the connecting portion of the connecting string portion 40 is connected to the middle step 16b or the edge of the slat. Can be prevented from interfering with the rotation of the slats. On the other hand, when the connecting portion can be made compact, the connecting portion of the connecting string portion 40 can be positioned near the middle stage. In this case, when the slat is raised, the extension portion of the lower ladder cord 17 is provided. 17B can be folded neatly. Further, as shown in the drawing, the interval between the adjacent connecting string portions 40 is preferably an interval that is an integral multiple of the pitch of the middle stage 16a of the upper ladder cord 16, thereby increasing the number of connecting string portions 40. It is possible to prevent the appearance from becoming too bad.

  The connecting member that can be bent in this manner is not limited to the flexible elongated connecting string portion 40, and the tilting operation of one ladder cord for rotating the slat group is hindered by the other ladder cord. Otherwise, for example, a flexible joint composed of a plurality of joints may be used.

It is a front view of the blind concerning embodiment of this invention, and shows the state which all the slat groups have a horizontal angle. It is a side view of FIG. It is the fragmentary perspective view and partial enlarged view of the blind concerning embodiment of this invention. It is a front view of the blind concerning the embodiment of the present invention, and shows the state where the upper slat group is at a horizontal angle and the lower slat group is at a fully closed angle. FIG. 5 is a side view of FIG. 4. It is a front view of the blind concerning the embodiment of the present invention, and shows the state where the upper slat group and the lower slat group are in a fully closed angle in opposite directions. FIG. 7 is a side view of FIG. 6. It is a front view of the blind concerning embodiment of this invention, and shows the state which all the slat groups raised. It is a side view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Blind 14 Upper slat group 15 Lower slat group 16 Upper ladder cord 16a Vertical cord 16b Middle stage 16c Ring portion 17 Lower ladder cord 17a Vertical cord 17A Ladder cord portion 17B Extension portion 40 Connection string portion

Claims (6)

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, the upper slat group (14) and the lower slat group (15) can be rotated separately, and the upper slat group (14) and the lower slat group (15) can be moved up and down as a whole.
The lower ladder cord (17) includes a ladder cord portion (17A) located in the lower slat portion and an extension portion (17B) located in the upper slat portion, and the upper ladder cord (16) and the lower ladder cord. The extension (17B) of (17) is connected by a connecting member (40) that can be bent at appropriate intervals in the vertical direction.   The blind according to claim 1, wherein the connecting member (40) has a length that does not apply tension when the upper ladder cord (16) and the lower ladder cord (17) are tilted. .   The connecting member (40) according to claim 1, wherein the connecting member (40) has such a length that no tension is applied when the upper slat group (14) and the lower slat group (15) are rotated in opposite directions. blind.   The connecting member (40) has such a length that no tension is applied when the upper slat group (14) and the lower slat group (15) are rotated to the end positions in opposite directions. The blind according to claim 1.   At least one of the extension portion (17B) of the upper ladder cord (16) and the lower ladder cord (17) has a ring portion (16c) at a predetermined position of the vertical cords (16a, 17a) before and after the one ladder cord. The blind according to any one of claims 1 to 4, wherein the ring portion (16c) and the connecting member (40) are coupled.   The connecting position of the upper ladder cord (16) by the connecting member (40) is between two middle stages (16b) adjacent to each other in the vertical direction of the upper ladder cord (16). The blind according to any one of 5.

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