JP2014206009A - Blind - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a blind which is prevented in light leakage from a clearance between a shielding material and a window frame when descending the shielding material, and light leakage from a clearance between the adjacent shielding materials when continuously arranging a plurality of shielding materials.SOLUTION: Lift cords 24 for lifting rows of slats 20 are connected to a plurality of longitudinal points of a head box 12 so as to be windable and re-windable, rotating drums 30 which can tilt ladder cords 18 for supporting the rows of slats 20 are arranged, the rotating drums 30 are moved in the longitudinal direction of the head box 12 accompanied by rotation, and thereby positions of the slats 20 with respect to fixed faces in a state that the slat rows are descended and a state that the slat rows are ascended are changed in the longitudinal direction of the head box 12.

Description

  The present invention prevents light leakage from between the shielding material and the window frame when the shielding material is lowered, and light leakage from between adjacent shielding materials when a plurality of shielding materials are arranged side by side. Concerning blinds.

  Conventional blinds are generally installed with a predetermined amount of gap between them in order to prevent interference with window frames and adjacent shielding materials when the shielding materials are raised and lowered. It has been broken. However, since light leaks from these gaps when the shielding material is lowered, various proposals have been made to close such gaps.

  For example, in Patent Document 1, in a roll blind in which two or more units are arranged side by side, an installation tool that can be adjusted according to the thickness of the roll blind is disposed between two screens, and the length can be adjusted. Is suspended from the fixture to close the gap between the two screens to prevent light leakage.

  Further, the one disclosed in Patent Document 2 includes a plurality of main curtain bodies arranged in the horizontal direction and sub-curtain bodies arranged in a side-by-side manner between the main curtain bodies, and each main curtain body is provided for each. The secondary curtain is wound around the secondary winding shaft that is positioned obliquely below the primary winding shaft and parallel to the primary winding shaft. The main curtain body and the secondary curtain body are sealed by sandwiching the side edge of the primary curtain body in a bifurcated sealing portion formed in the secondary curtain body, and the lower end of each primary curtain body A rod-shaped weight is attached horizontally in the middle, the main curtain body is lowered by the weight of the rod-shaped weight and the tension is maintained, and the lower end of the sub-curtain body is also fixed to the rod-shaped weight, and the main curtain body is the main winding When the secondary curtain is lowered from the take-up shaft, the secondary curtain is drawn from the secondary take-up shaft due to the weight of the bar-shaped weight. On the other hand, when the main curtain body is wound around the main winding shaft and rises, the secondary curtain body is also wound around the secondary winding shaft to which the torsional torque is applied, and thus the main winding shaft is In addition, the winding and unwinding by the auxiliary winding shaft are performed synchronously.

Japanese Utility Model Publication No. 1-70996 JP 2001-193370 A

  However, in the case shown in Patent Document 1, when the screen is rolled up in order to incorporate light, only the band will hang down. For this reason, when the belt is obstructive, the belt can be removed, but there is a problem that the removal work is complicated and the storage location of the removed belt is also troublesome.

  Moreover, in what is shown by patent document 2, since a subwinding axis | shaft is located in the diagonally downward direction of a main winding axis | shaft and arrange | positioned in parallel with a main winding axis | shaft, both winding axis | shafts are arrange | positioned. There is a problem in that the space in the front-rear direction necessary for doing so increases.

  In the present invention, it is not necessary to block the gap with a special member in order to prevent light leakage when the shielding material is lowered, and it is not necessary to provide a large space in the front-rear direction in order to provide a member for closing the gap. Its purpose is to provide blinds.

In order to achieve the above-mentioned object, the invention according to claim 1 is a blind comprising a support member that is fixed to a fixed surface and extends in the longitudinal direction, and a shielding member that can be lifted and lowered from the support member.
The suspension position of the shielding material relative to the fixed surface when the shielding material is lowered is changed in the longitudinal direction of the support member when the shielding material is raised.

  According to a second aspect of the invention, in the first aspect of the invention, the shielding member moves up and down with the lifting and lowering of the lifting and lowering cord suspended from the support member, and the drum capable of winding the lifting and lowering cord is provided. By moving in the longitudinal direction of the supporting member, the hanging position of the lifting / lowering cord from the supporting member is moved in the longitudinal direction, and the shielding material is moved integrally with the lifting / lowering cord.

  The invention according to claim 3 is the invention according to claim 1 or 2, wherein the shielding member is supported by a ladder cord suspended from the support member so as to be tiltable, and the drum capable of tilting the ladder cord is a support member. By moving in the longitudinal direction, the suspension position of the ladder cord from the support member moves in the longitudinal direction, and the shielding material moves together with the ladder cord.

  The invention according to claim 4 is the invention according to claim 2 or 3, wherein the drum has a drum receiver that cannot rotate relative to the support member, and a rotating drum that is rotatably supported by the drum receiver. The drum receiver and the rotary drum are integrally moved along the support member in the longitudinal direction.

  According to a fifth aspect of the present invention, in the invention according to any one of the second to fourth aspects of the present invention, in the support member, a rotation shaft that transmits rotation for raising and lowering the shielding material, and a rotation shaft are integrated. A rotatable screw shaft and a screwing member that cannot be rotated relative to the support member and are screwed onto the screw shaft are disposed. When the screwing member or the screw shaft presses the drum, the drum becomes the length of the support member. It is characterized by moving in the direction.

  A sixth aspect of the present invention is the mechanical component according to any one of the first to fifth aspects, wherein the shielding material is movable in the longitudinal direction along the support member and is necessary for raising and lowering the shielding material. Is suspended by a movable member provided therein.

  The invention according to claim 7 is the shielding material according to any one of claims 1 to 6, wherein at least two support members are arranged adjacent to each other in the longitudinal direction, and are suspended from the respective support members. When at least one of the shielding materials is lowered, it moves in a direction approaching the other shielding material.

  The invention according to claim 8 is the invention according to any one of claims 1 to 6, wherein at least two shielding materials are suspended from one support member so as to be movable up and down so as to be adjacent in the longitudinal direction. The at least one shielding material among the shielding materials adjacent to each other moves in a direction approaching the other shielding material when descending.

  The invention according to claim 9 is the invention according to any one of claims 1 to 8, characterized in that the shielding material moves in the longitudinal direction of the support member in conjunction with the elevation of the shielding material. To do.

  The invention according to claim 10 is the invention according to any one of claims 1 to 8, wherein the shielding member is moved in the longitudinal direction of the support member from before the lower limit position in the middle of descending. And

  An eleventh aspect of the invention is characterized in that, in the invention according to any one of the first to eighth aspects, the shielding member moves to the longitudinal direction of the support member after being lowered to the lower limit position. .

  By making the suspension position of the shielding material with respect to the fixed surface when the shielding material is raised different from the suspension position of the shielding material with respect to the stationary surface when the shielding material is lowered, for example, shielding in the lowered state By setting the material closer to the window frame, the gap between the shielding material and the window frame is reduced, and similarly, when the adjacent shielding material is brought closer to each other in the lowered state, the gap between the shielding materials is reduced. Therefore, light leakage can be prevented.

  Since the suspension position of the shielding material itself changes, a special member for closing the gap is unnecessary, or a special space for providing a member for closing the gap is not required.

It is the whole blind front view concerning a 1st embodiment of the present invention, and shows a part inside head box. FIG. 2 is a cross-sectional view of the head box taken along line 2A-2A in FIG. 1. FIG. 2 is a cross-sectional view of the head box taken along line 2B-2B in FIG. 1. It is a top view of the head box of the shielding material raising / lowering device vicinity which showed the drum receiver in the cross section, and shows the state by which the shielding material is raised to the upper limit position. It is a top view of the head box near the shielding material raising / lowering device showing the drum receiver in cross section, and shows a state in the middle of the shielding material being lowered. It is a top view of the head box near the shielding material raising / lowering device showing the drum receiver in cross section, and shows a state where the shielding material is lowered to the lower limit position. It is a partial sectional side view of FIG. 3A. FIG. 3B is a partial side sectional view of FIG. 3B. It is a partial sectional side view of FIG. 3C. It is a front view of the blind which connected two support members continuously, and shows the state by which the shielding material is raised to the upper limit position. The state in the middle of the shielding material descending is shown. 5B shows a state in which the shielding material is further lowered than the state of FIG. 5B and adjacent shielding materials are approaching each other. The shielding material descends to the lower limit position, and shows a state where the gap is closed due to the proximity of adjacent shielding materials. It is a fragmentary sectional side view of the shielding material raising / lowering device of 2nd Embodiment, and shows the state by which the shielding material is raised to the upper limit position. It is a fragmentary sectional side view of the shielding material raising / lowering device of 2nd Embodiment, and shows the state in the middle of the shielding material falling. It is a fragmentary sectional side view of the shielding material raising / lowering device of 2nd Embodiment, and shows the state by which the shielding material was lowered | hung to the minimum position. It is a fragmentary sectional side view of the shielding material raising / lowering device of 2nd Embodiment, and shows the state in the middle of the raising of the shielding material. It is a front view which shows another aspect of the shielding material suspended from the two support members mounted in series, and shows the state in which the shielding material is raised to the upper limit position. A state where the shielding material is lowered and adjacent shielding materials are approaching each other is shown. FIG. 7B shows a state where the shielding material is further lowered than the state of FIG. 7B and adjacent shielding materials are further approaching each other. The shielding material descends to the lower limit position, and shows a state where the gap is closed due to the proximity of adjacent shielding materials. It is a front view which shows another aspect of the shielding material suspended from the two support members mounted in series, and shows the state where the shielding material is raised to the upper limit position. The state in the middle of the shielding material descending is shown. The state in the middle of the shielding material further falling from the state of FIG. 8B is shown. The shielding material descends to the lower limit position, and shows a state where the gap is closed due to the proximity of adjacent shielding materials. The state in the middle of the shielding material suspended from three support members mounted in series is shown. The shielding material descends to the lower limit position, and shows a state where the gap is closed due to the proximity of adjacent shielding materials. It is a front view of the blind with which two shielding materials are arranged in parallel by one support member. The shielding material descends to the lower limit position, and shows a state where the gap is closed due to the proximity of adjacent shielding materials.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 to 5, the blind 10 includes a head box 12 (support member) that is fixed to a window frame or the like by a bracket 11 or the like and extends in the longitudinal direction. A rotating shaft 14 that is driven to rotate by a motor 15 is disposed in the head box 12 in the longitudinal direction. The rotating shafts 14 respectively penetrate the shielding material lifting / lowering devices 16 disposed at a plurality of locations (three locations in the figure) in the longitudinal direction of the head box 12.

  A ladder cord 18 hangs down from each shielding material lifting device 16, and each ladder cord 18 supports a large number of slats 20 in an aligned state below the head box 12. One shielding material is constituted by the entire slat 20 row. A bottom rail 22 is disposed at the lower end of the slat 20 row, and the lower ends of the ladder cords 18 are connected to each other. In addition, the lifting / lowering cords 24 also hang down from the shielding material lifting / lowering devices 16. The lifting / lowering cords 24 are arranged vertically along the slats 20 below the head box 12, and the lower ends of the lifting / lowering cords 24 are arranged at the lower ends. The bottom rail 22 is connected.

  The shielding material lifting / lowering device 16 tilts the ladder cord 18 according to the rotation of the rotary shaft 14 and raises / lowers the lift cord 24 according to the rotation of the rotary shaft 14, and moves the slat 20 row in the longitudinal direction of the head box 12. It is for moving along, and comprises a fixed member 26, a drum receiver 28, a rotating drum 30, a screw shaft 32, and a moving piece 34. Here, the drum receiver 28 and the rotating drum 30 constitute a drum.

  As shown in FIG. 2, the fixing member 26 is fixed to the head box 12 with its bottom part fitted into the opening of the bottom part of the head box 12, and the longitudinal direction thereof coincides with the longitudinal direction of the head box 12 and is the upper part. The box shape is open. A pair of protrusions 26b protrude in the facing direction from the front and rear inner wall surfaces that define the internal space 26a of the fixing member 26, and the pair of protrusions 26b are approximately half the longitudinal direction of the fixing member 26 ( It extends over the right half in FIG. A lower opening 26c is formed at the bottom of the fixing member 26 over the entire length in the longitudinal direction.

  A drum receiver 28 is slidably inserted in the longitudinal direction in a portion of the inner space 26a of the fixing member 26 that is approximately half of the longitudinal direction (the left half in FIG. 3) where the protrusion 26b is not formed. As shown in FIG. 2A, an insertion hole 28 a through which the lifting / lowering cord 24 is inserted and an insertion hole (not shown) through which the ladder cord 18 is inserted are formed at the bottom of the drum receiver 28.

  The drum receiver 28 rotatably supports the rotating drum 30, and the rotating shaft 14 passes through the rotating drum 30 so as to rotate integrally. The upper end of the ladder cord 18 is connected to the outer peripheral surface of the rotary drum 30 so that a predetermined amount is wound and unwound, but no more than that is wound and unwound, and the upper end of the elevating cord 24 is wound. And unrollable. The ladder cord 18 is inserted through an insertion hole (not shown) of the drum receiver 28 and led out from the lower opening 26c of the fixing member 26 to the lower side of the head box 12, and the elevating cord 24 is also inserted through the insertion hole 28a of the drum receiver 28. The head member 12 is led out from the lower opening 26 c of the fixing member 26.

  The screw shaft 32 is fixed to the outer periphery of the rotary shaft 14 corresponding to the portion where the protrusion 26b of the internal space 26a of the fixing member 26 is formed, and a male screw is formed on the outer peripheral surface thereof. Yes.

  A moving piece 34 having an internal thread formed on the inner peripheral surface is screwed onto the screw shaft 32. As shown in FIG. 2B, the moving piece 34 has a pair of protrusions 34b that protrude radially outward from the outer peripheral surface and is formed over the entire length in the axial direction, and the pair of protrusions 34b have an axial direction. A penetrating groove 34 a is formed, and the protrusion 26 b of the fixing member 26 is inserted into the groove 34 a of the moving piece 34. As a result, the moving piece 34 is not rotatable, but can move along the protrusion 26b. Therefore, when the screw shaft 32 rotates together with the rotating shaft 14, the moving piece 34 moves onto the screw shaft 32. Is moved in the axial direction. When the moving piece 34 moves on the screw shaft 32 in the direction of the drum receiver 28 and contacts the drum receiver 28, the moving piece 34 can press the drum receiver 28 and move the drum receiver 28 in the longitudinal direction of the head box 12. It has become. Thereby, the rotating drum 30 can be moved in the longitudinal direction of the head box 12 together with the ladder cord 18 and the lifting / lowering cord 24, and accordingly, the slat 20 can be moved in the longitudinal direction of the head box 12.

  Further, a magnet surface 34 c is formed on one end surface of the moving piece 34, and a magnetic body surface 28 b is formed on the end wall surface of the opposing drum receiver 28.

  Now, as shown in FIG. 5A, consider a case where two head boxes 12 are juxtaposed and a slat 20 row is suspended from each head box 12. In this case, the shielding material lifting device 16 in the right head box 12 in FIG. 5A is configured as shown in FIGS. 3A and 4A, and the shielding material lifting device 16 in the left head box 12 in FIG. Also, the configuration shown in FIG. 4A is reversed left and right. Hereinafter, the operation of the right side shielding member lifting device 16 and the slat 20 row in FIG. 5 will be mainly described, but the left side blind 10 in FIG.

  As shown in FIG. 5A, when the slat 20 is raised to the upper limit position, the moving piece 34 is separated from the drum receiver 28 as shown in FIGS. 3A and 4A. It is at a position close to 32.

  From this state, when the rotary shaft 14 is rotated in the direction indicated by the arrow A in FIG. 3B in order to lower the slat 20 row, the rotary drum 30 unwinds the lifting / lowering cord 24, and as shown in FIG. 5B, the slat 20 Is moved downward, and the moving piece 34 moves on the screw shaft 32 in the direction of the drum receiver 28. At this time, the drum receiver 28 does not move, and the slat 20 moves down without moving in the longitudinal direction of the head box 12.

  When the slat 20 row is lowered halfway and before the lower limit position, the magnet surface 34c of the moving piece 34 comes into contact with the magnetic body surface 28b of the drum receiver 28 as shown in FIGS. It will be in the adsorbed state. When the rotating shaft 14 is further rotated in the same direction, the moving piece 34 further moves in the left direction in the figure, so that the moving piece 34 presses the drum receiver 28, and the drum receiver 28 is in the internal space 26 a of the fixing member 26. Move to the left in the figure. As a result, the rotary drum 30 moves with the drum receiver 28 while unwinding the lifting / lowering cord 24, so that the slat 20 rows move downward toward the adjacent slat 20 rows. 3C and 4C, when the drum receiver 28 moves to the left end of the internal space 26a, the slat 20 row moves down to the lower limit position and moves to the position closest to the adjacent slat 20. Therefore, the gap between the adjacent 20 slat rows is closed. Thereby, the light leakage from between the adjacent 20 slat rows can be prevented.

  Further, when the rotary shaft 14 is rotated in the direction opposite to the direction indicated by the arrow A in FIG. 3B in order to raise the slat 20 row, the moving piece 34 moves in the right direction in the drawing in the opposite direction. At this time, the drum receiver 28 is pulled by the moving piece 34 due to the suction action between the drum piece 28 and the moving piece 34, so that it can return to the state shown in FIGS. 3A and 4A. Thus, a gap is formed between adjacent 20 slat rows.

  As described above, the drums 28 and 30 that suspend the ladder cords 18 that support the slats 20 rows can be moved in the longitudinal direction of the head box 12, so that the ladder cords 18 and the slats 20 rows are moved along with the movement of the drums. And / or the drums 28 and 30 for suspending the lifting / lowering cord 24 can be moved in the longitudinal direction of the head box 12 so that the lifting / lowering cord 24 and the slat 20 row are moved with the movement of the drum. Therefore, the suspended position of the slat 20 row with respect to the fixed surface when the slat 20 row is lowered can be different from the suspended position of the slat 20 row with respect to the fixed surface when the slat 20 row is raised.

  Since the slat 20 moves in the longitudinal direction only in one section where the row of slats 20 moves up and down, interference such as shaking of the shielding material at the time of raising and lowering can be prevented. Further, the moving amount of the moving piece 34 with respect to the gap formed between the adjacent slat 20 rows can be easily set regardless of the elevation height of the entire slat 20 row.

  In the first embodiment, the moving piece 34 that is screwed to the screw shaft 32 fixed to the rotary shaft 14 moves the drums 28 and 30 in the shielding material lifting device 16. The configuration is not limited to the above, and an arbitrary configuration is possible. For example, the screw shaft is attached so as to be movable in the axial direction with respect to the rotation shaft 14 and is not relatively rotatable, and is screwed with a fixed member with respect to the head box 12. The drums 28 and 30 may be moved by moving in the direction. Alternatively, a fixed screw shaft 32 may be provided, and the moving piece 34 may be moved by rotating the moving piece 34 screwed to the screw shaft 32 together with the rotating shaft 14.

  Further, the shielding material lifting / lowering device 16 may have a form as in the second embodiment shown in FIGS. 6A to 6D. Hereinafter, the second embodiment will be described, but only portions different from the first embodiment will be described, and description of the same portions will be omitted.

  In the second embodiment, instead of the magnet surface 34c of the moving piece 34 and the magnetic body surface 28b of the drum receiver 28, a spring 40 is provided in the internal space 26a of the fixing member 26 of the head box 12 of the first embodiment. Yes. The spring 40 is disposed in the internal space 26 a opposite to the screw shaft 32 side of the drum receiver 28, and thereby the spring 40 constantly urges the drum receiver 28 toward the moving piece 34. Further, the screw shaft 32 is formed with a cylindrical portion 32a in which no male screw is formed at the end portion on the drum receiver 28 side, and when the moving piece 34 moves most toward the drum receiver 28, that is, the drum receiver 28 is moved. When moving to the position farthest away from the screw shaft 32, the moving piece 34 is positioned in the cylindrical portion 32a, and the moving piece 34 is configured not to move any further even if the screw shaft 32 rotates. .

  Next, the operation of the second embodiment will be described.

  As shown in FIG. 5A, when the slat 20 is raised to the upper limit position, as shown in FIG. 6A, the moving piece 34 is separated from the drum receiver 28, and the drum receiver 28 is attached to the spring 40. It is urged toward the screw shaft 32 by the urging force and is in contact with the protrusion 26b.

  When the rotary shaft 14 is rotated in the direction of arrow A in FIG. 6B to lower the slat 20 row from this state, the rotary drum 30 rotates to unwind the lifting / lowering cord 24, and the slat 20 is lowered and the moving piece is moved. 34 moves on the screw shaft 32 toward the drum receiver 28. As shown in FIG. 6B, the slat 20 moves down without moving to a position where the moving piece 34 contacts the drum receiver 28.

  When the slat 20 row is lowered halfway and before the lower limit position, the moving piece 34 presses the drum receiver 28, and the drum receiver 28 moves away from the screw shaft 32 against the urging force of the spring 40. Moving. As a result, the rotary drum 30 moves in the longitudinal direction together with the drum receiver 28 while unwinding the lifting / lowering cord 24, so that the slat 20 rows move toward the adjacent slat 20 rows while descending. As shown in FIG. 6C, when the drum receiver 28 moves to the position farthest from the screw shaft 32, as shown in FIG. 5D, the slats 20 are lowered to the lower limit position, and a gap between adjacent slat 20 rows is formed. Blocked.

  In order to raise the slat 20, the rotating shaft 14 is rotated in the direction of arrow B in FIG. 6D. As a result, the moving piece 34 moves on the screw shaft 32 in the direction opposite to the above direction, and accordingly, the drum receiver 28 moves in the direction of the screw shaft 32 by the biasing force of the spring 40. Since the rotary drum 30 moves in the direction of the screw shaft 32 while winding the elevating cord 24, the slat 20 row is separated from the adjacent slat 20 row while rising.

  Thus, the same effects as those of the first embodiment can be obtained in the second embodiment. Since the movement in the longitudinal direction of the 20 rows of slats is limited to the vicinity of the lower limit position, it is possible to prevent interference such as shaking of the shielding material during ascent and descent. Further, the moving amount of the moving piece 34 with respect to the gap formed between the adjacent slat 20 rows can be easily set regardless of the elevation height of the entire slat 20 row.

  However, the relationship between the vertical movement of the slats 20 row and the movement of the head box 12 in the longitudinal direction is not limited to the partial section where the slats 20 row is near the lower limit position or the upper limit position of the slats 20 row as in the above embodiment. For example, you may make it move to a longitudinal direction in all the raising / lowering sections of 20 rows of slats. In order to achieve such a configuration, the shielding member lifting / lowering device 16 is integrated, for example, in the configuration of the first embodiment, instead of attracting the moving piece 34 and the drum receiver 28 with the magnet surface 34c and the magnetic surface 28b. It is good to connect to. Further, in the configuration of the shielding material lifting / lowering device 16 of the second embodiment, the moving distance of the drum receiver 28 may be increased. Alternatively, other configurations may be used. In this case, as shown in FIG. 7A, when the slat 20 rows are raised to the upper limit position, the adjacent slat 20 rows are separated from each other to the maximum, and the distance is about the same as the gap between the adjacent head boxes 12. The gap is formed. Thereafter, as shown in FIG. 7B and FIG. 7C, as the slat 20 row descends, the slat 20 row moves toward the adjacent slat 20 row direction, and the gap between the adjacent slat 20 rows gradually decreases. As shown in FIG. 7D, when the slat 20 rows are lowered to the lower limit position, the gap between adjacent slat 20 rows is closed.

  Alternatively, the slat 20 row may move in the longitudinal direction after descending to the lower limit position. In order to achieve such a configuration, for example, the shielding material lifting device 16 is configured by a drum receiver 28 and a rotating drum 30, and the rotary shaft 14 and the shielding material lifting device 16 are generally longitudinal with respect to the head box 12. For example, it is preferable that the rotating shaft 14 and the shielding material elevating device 16 can be moved manually. In this case, as shown in FIGS. 8A to 8C, the gap between adjacent slat rows 20 is constant from when the slat 20 row is raised to the upper limit position to when it is lowered to the lower limit position. After the slat 20 row descends to the lower limit position, the slat 20 row moves in the direction of the adjacent slat 20 by sliding the rotating shaft 14 and the shielding material lifting device 16 in the longitudinal direction. 20 gaps are configured to be closed.

  In the above embodiment, two head boxes 12 are arranged side by side, but three head boxes 12 may be arranged side by side. That is, as shown in FIG. 9A, three head boxes 12 are arranged at an appropriate interval from each other, and when the slats 20 are lowered, they are hung on the head box 12 arranged in the center as shown in FIG. 9B. The slat 20 row to be lowered is not moved, only the slat 20 row of the head box 12 arranged on the left and right is moved in the direction of the slat 20 row of the central head box 12 to close the gap between the adjacent slat 20 rows. To do.

  Moreover, in the said embodiment, although the raising / lowering and movement of the slat 20 were performed by the shielding material raising / lowering apparatus 16 arrange | positioned in the head box 12, it is not limited to such a structure. For example, as shown in FIG. 10A, the support member 42 is fixed to the window frame or the like by the bracket 11 or the like, and the two head boxes 12 are disposed in the support member 42 so as to be movable in the longitudinal direction, as shown in FIG. 10B. As described above, when the slats 20 are lowered to the lower limit position, the adjacent head boxes 12 themselves may move in a direction approaching each other, thereby closing the gap between the adjacent slats 20. Alternatively, the head box 12 itself, which is a support member, may be locked to the bracket 11 so as to be movable in the longitudinal direction, and the head box 12 itself is moved in the longitudinal direction according to the raising / lowering of the shielding material manually. You may make it make it. Thereby, the configuration inside the head box 12 and below the head box 12 can be made the same as that of the existing blind, and the existing blind can be used.

  Moreover, in the said embodiment, although the example applied to the Venetian blind as a blind was demonstrated, you may apply to a pleat screen, a roll screen, etc.

  Moreover, in the said embodiment, although the rotating shaft 14 shall be rotated with a motor, it is good also as what rotates manually.

12 Head box (supporting member, movable member)
14 Rotating shaft 16 Shielding material lifting device 18 Ladder cord 20 Slat (shielding material)
24 Elevating cord 28 Drum receiver (drum, mechanism parts)
30 Rotating drum (drum, mechanism parts)
32 Screw shaft 34 Moving piece (Screw member)

Claims (11)

In a blind comprising a support member (12, 42) fixed to a fixed surface and extending in the longitudinal direction, and a shielding member (20) suspended from the support member so as to be lifted and lowered,
A blind characterized in that the suspended position of the shielding material relative to the fixed surface in the state where the shielding material is lowered changes in the longitudinal direction of the support member when the shielding material is raised.   The shielding member (20) moves up and down with the lifting and lowering of the lifting and lowering cord (24) suspended from the support member so that it can be lifted and lowered, and the drums (28 and 30) capable of winding the lifting and lowering cord are in the longitudinal direction of the supporting member. The blind according to claim 1, wherein the suspension position of the lifting / lowering cord from the support member moves in the longitudinal direction by moving to the support member, and the shielding member moves integrally with the lifting / lowering cord.   The shielding member is supported by a ladder cord (18) suspended from a support member so as to be tiltable, and the drum (28, 30) capable of tilting the ladder cord is supported by moving in the longitudinal direction of the support member. The blind according to claim 1 or 2, wherein the suspension position of the ladder cord from the member moves in the longitudinal direction, and the shielding member moves integrally with the ladder cord.   The drum includes a drum receiver (28) that cannot rotate relative to the support member, and a rotary drum (30) that is rotatably supported by the drum receiver. The drum receiver and the rotary drum are integrated into the support member. 4. The blind according to claim 2, wherein the blind is moved along a longitudinal direction along the blind.   In the support member, there are a rotation shaft (14) through which rotation is transmitted to raise and lower the shielding material, a screw shaft (32) that can rotate integrally with the rotation shaft, and a screw shaft that cannot rotate relative to the support member. A screwing member (34) to be screwed onto the drum is disposed, and the drum is moved in the longitudinal direction of the support member when the screwing member or the screw shaft presses the drum. The blind of any one of thru | or 4.   The shielding material can be moved in the longitudinal direction along the support member and is suspended by a movable member (12, 16) in which mechanical parts (28, 30) necessary for raising and lowering the shielding material are provided. The blind according to any one of claims 1 to 5.   At least two support members are arranged adjacent to each other in the longitudinal direction, and at least one of the shield members suspended from each support member moves in a direction approaching the other shield member when descending. The blind according to any one of claims 1 to 6, characterized in that:   When at least two shielding materials are suspended from one support member (12, 42) so as to be movable up and down so as to be adjacent to each other in the longitudinal direction, and at least one of the shielding materials adjacent to each other descends. The blind according to any one of claims 1 to 6, wherein the blind moves in a direction approaching the other shielding material.   The blind according to any one of claims 1 to 8, wherein the shielding member moves in the longitudinal direction of the support member in conjunction with the raising and lowering of the shielding member.   The blind according to any one of claims 1 to 8, wherein the shielding material is moved in the longitudinal direction of the support member from before the lower limit position in the middle of the descent.   The blind according to any one of claims 1 to 8, wherein the shielding material is moved in the longitudinal direction of the support member after being lowered to the lower limit position.

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