JP6504935B2 - Shielding device - Google Patents

Description

  The present invention relates to a shielding device that raises and lowers a shielding material using a raising and lowering cord.

  In the horizontal blind, one end and the other end of the plurality of lifting cords are suspended from the head box, one end of each lifting cord is attached to the bottom rail, and the other end of each lifting cord is suspended from the head box There is a hollow operating rod supported at the bottom and a hollow grip provided at the lower end of the lower operating rod and suspended (see Patent Document 1).

Japanese Utility Model Publication No. 57-123497

  In Patent Document 1, a loop is formed by bundling a plurality of lifting cords hanging down from a grip with a knob. Foreign matter may be caught in this loop.

  The present invention has been made in view of such circumstances, and provides a shielding device with enhanced safety.

According to the present invention, there is provided a shielding device for raising and lowering a shielding material by pulling a tensile cord, wherein the tensile cord is connected directly or indirectly to a plurality of lifting cords provided on the shielding material side. One cord is connected and configured, or a plurality of lifting cords provided on the side of the shielding member are connected to each other at a connection portion to be a single cord, and the following (1) to (2) A shielding device is provided having any of the following configurations.
(1) A plurality of lifting cords and connection parts can be inserted through the hollow rod and the single cord can be inserted into the hollow rod.
(2) The connection is configured to be always in the head box.

  In the shielding device according to the invention, a plurality of lifting cords are connected to a single cord at the connection, or a plurality of lifting cords are connected to each other at the connection into a single cord, and (1) A plurality of lifting cords and connecting parts can be inserted through the hollow rod and a single cord is inserted into the hollow rod, or (2) the connecting part is always in the head box. For this reason, with the shielding member in the lower limit position, the connection between the plurality of lifting cords and the single cord is disposed in the hollow rod or is disposed closer to the shielding member than the upper end of the hollow rod . When the shielding member is pulled up to the upper limit position in the shielding device configured in this way, in that state, the connection portion is disposed closer to the shielding member than the upper end of the hollow rod (for example, in the head box) It is disposed within the hollow rod or is withdrawn from the lower end of the hollow rod. When the connecting portion is disposed on the shield side of the upper end of the hollow rod or in the hollow rod, a loop formed by bundling a plurality of lifting cords at the connecting portion is on the lower end side of the hollow rod Since it is not exposed to the outside, it is possible to prevent an accident caused by the presence of a loop. On the other hand, when the connection part is pulled out from the lower end of the hollow rod, the loop is exposed to the outside, but even in this case, the loop is disposed at a higher position than the prior art and the circumferential length of the loop is greater than the prior art. Because it is shorter, it is more secure than the prior art.

  In the present invention, “single cord” is not particularly limited in material and cross sectional shape as long as it is a single cord, and “single cord” is any cord that can be inserted into a hollow rod, Strips and monofilaments are available. In addition, one of the plurality of lifting and lowering cords may be a single cord, and a braided cord in which a plurality of lifting and lowering cords are woven may be a single cord. That is, a single cord connected to the lifting cord separately from the lifting cord may be a single cord, or a single extension cord of the lifting cord may be a single cord.

Hereinafter, various embodiments of the present invention will be illustrated. The embodiments shown below can be combined with one another.
Preferably, the connection portion is configured not to be exposed to the outside from the lower end side of the hollow rod when the shielding member is at the upper limit position.
Preferably, the shielding device is a shielding device in which the support side and the operation side of the tensile cord are led out from the head box, and by pulling the operation side, the lead length of the support side is changed to raise and lower the shielding material. The hollow rod is suspended from the head box.

It is a front view which shows the horizontal blind of 1st Embodiment of this invention. It is an enlarged view of the upper right part of the horizontal blind of FIG. It is the schematic diagram which extracted the tension cord 19 and its related member from FIG. 1 and was simplified, (a) shows the state in which the bottom rail 4 is in the lower limit position, (b) pulls down the operation side 19o of the tension cord 19. The bottom rail 4 is raised to the upper limit position. (A)-(b) is a figure corresponding to Fig.3 (a)-(b) in the modification which is the extension part of a raising / lowering cord is a single cord. (A)-(b) is a figure corresponding to FIG. 3 (a)-(b) in the modification which the braided cord which braided several raising / lowering cords is a single cord. (A)-(b) is a figure corresponding to Fig.3 (a)-(b) in the horizontal blind of 2nd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described using the drawings. The various features shown in the embodiments described below can be combined with one another. In addition, the invention is established independently for each feature.

First Embodiment
A first embodiment of the present invention will now be described with reference to the drawings. In the horizontal blind shown in FIGS. 1 to 3, a plurality of slats 3 are suspended from a hollow head box 1 via a plurality of ladder cords 2, and a bottom rail 4 is suspended at the lower end of the ladder cords 2. It is supported. The ladder cord 2 is a form of "slat support cord". The configuration of the "slat support cord" is not limited as long as it can support and rotate the slat 3. For example, two slats separated from each other, one of the warps at one edge of the slat It may be configured such that it is attached and the other warp is attached to the other edge of the slat.

  A plurality of support members 5 are disposed in the head box 1, and the tilt drum 6 is rotatably supported by the support members 5. The upper end portion of the ladder cord 2 is attached to the tilt drum 6, and at the central portion of the tilt drum 6, the angle adjustment shaft 7 is inserted into all the tilt drums 6. Therefore, when the angle adjustment shaft 7 is rotated, all the tilt drums 6 are rotated, and one of the warps of the ladder cord 2 is pulled up with the rotation of the tilt drums 6, thereby each slat 3 and the bottom rail 4 is adjusted in phase with the same phase.

  A hollow operating rod 8 is suspendedly supported at one end of the head box 1, and a hollow grip 11 is provided at the lower end of the operating rod 8. When the grip 11 is held and the operation rod 8 is rotated, the angle adjustment shaft 7 is rotated via the gear mechanism disposed in the head box 1. Therefore, the rotational operation of the operating rod 8 enables angle adjustment of each slat 3.

  A plurality of (three in the present embodiment) lifting cords 9l, 9c, 9r (referred to as "lifting cord 9" when distinction is not necessary) are suspended from the head box 1, and each lifting cord 9 One end of is attached to the bottom rail 4. A turning pulley 21 is pivotally supported by an axial center 23 in the front-rear direction on each support member 5, and a lifting cord 9 introduced to the head box 1 can turn around the head box in the left-right direction. In addition, each support member 5 has a space in which the other lifting cords can pass in the left-right direction. Therefore, as shown in FIG. 2, the other end of the lifting cord 9r at the right end is diverted and guided by the support member 5, and the lifting cords on the non-operation side (the left and center lifting cords 9l and 9c in FIG. 2) Through the member 5, the head box 1 is guided in the direction of the operating rod 8. Then, it passes through the stopper portion 16 provided in the head box 1 and is inserted into the hollow operation rod 8 and the grip 11. As shown in FIG. 3A, the other end of the lifting cord 9 is connected to one end of the ball chain 12 at the connection portion 13, and the other end of the ball chain 12 passes through the passage in the grip 11 and the cord It is attached to the equalizer 10. The ball chain 12 is configured by arranging a large number of balls 12 b at substantially equal intervals along the base cord 12 a. In the present embodiment, the ball chain 12 corresponds to the “single cord” in the claims. The operating rod 8 and the grip 11 correspond to the "hollow rod" in the claims. The connection method of the lifting cord 9 and the ball chain 12 is not particularly limited, and may be the connection of the lifting cord 9 and the base cord 12a or the connection of the lifting cord 9 and the ball 12b. The elevating cord 9 and the ball chain 12 may be connected by welding, bonding, sewing, caulking, tying, engagement between a tying ball and a hole, and the like. Further, the elevating cord 9 and the ball chain 12 may be connected by snap-fitting a male-female resin composition joint fixed by outsert molding or a knot ball to the cord end. Such a connection method is also applicable to the case of using a single cord other than the ball chain 12. In the present embodiment, as shown in FIG. 3, the cord in which the lifting cord 9 and the ball chain 12 are connected is the tensile cord 19, and the side drawn out from the head box 1 and attached to the bottom rail 4 is the tensile cord A support side 19s of 19 and a side which is derived from the head box 1 and attached to the code equalizer 10 is an operation side 19o of the tensile cord 19. As shown in FIG. 3, the support side 19 s and the operation side 19 o are derived from different positions of the head box 1. In this example, although the operation side 19o of the tension cord 19 is derived from a position different from the derivation position of the elevation cord 9, the operation side 19o of the tension cord 19 is from the same position as the derivation position of any elevation cord 9 It may be derived. As the bottom rail 4 ascends, the lead-out length of the support side 19s of the tension cord 19 becomes short, and the lead-out length of the operation side 19o of the tension cord 19 becomes long. Note that the support side 19s and the operation side 19o of the tension cord 19 are functional concepts that change depending on the height position of the bottom rail 4, and which range of the tension cord 19 is the support side 19s and which range is the operation side 19o It is not possible to draw, and the same portion of the tensile cord can be the support side 19s or the operation side 19o.

Here, the operation of the horizontal blind of the present embodiment will be described.
As shown in FIG. 1, when the bottom rail 4 is at the lower limit position, the code equalizer 10 is in contact with the lower surface of the grip 11 as shown in FIGS. 1 to 3A. In this state, the ball chain 12 is inserted into the operating rod 8. Further, the connection portion 13 is disposed in the vicinity of the upper end in the operation rod 8. The connection portion 13 may be disposed closer to the shield than the upper end of the operation rod 8. For example, the connection portion 13 may be disposed between the stopper portion 16 and the operating rod 8 in the head box 1.

  The state after the operation side 19o of the pulling cord 19 is pulled down and the bottom rail 4 reaches the upper limit position is shown in FIG. 3 (b). When the hand is released from the tension cord 19 in this state, the stopper portion 16 operates to hold the lifting cord 9 so that the bottom rail 4 is not lowered by its own weight. In this state, the connection portion 13 is not pulled out from the lower end of the grip 11, and as shown in FIG. 3B, no loop is formed between the lower end of the grip 11 and the connection portion 13. In the present embodiment, the ball chain 12 is inserted through the operating rod 8 and the grip 11 with the bottom rail 4 at the lower limit position, and the ball chain 12 is pulled down and the bottom rail 4 is raised to the upper limit position. The lifting cord 9 is inserted into the operating rod 8 and the grip 11. Even if the connecting portion 13 is exposed with the bottom rail 4 in the upper limit position without being set as described above, the loop formed when the bottom rail 4 is in the upper limit position is Since the lower end position is high and the circumferential length is short, the foreign matter is not easily caught in the loop, thereby enhancing the safety.

The present invention can also be practiced in the following modes.
The invention is also applicable to shielding devices where the shielding material is other than a slat. In this case, the tilt drum, the shaft, and the tilt rotation transmission mechanism may be omitted. In this case, the rod is not the operating rod (tilt operation in the present embodiment), and it becomes a hollow rod having no operating function.
The invention is also applicable to shielding devices without bottom rails (tack curtains, roll up blinds etc). Even in such a shielding device, the shielding material can be raised and lowered by changing the lead-out length on the support side of the tensile cord.
-Any cords, strips or monofilaments which can be inserted into the hollow rod instead of the ball chain 12 can be used.
The connecting portion is preferably configured to separate the plurality of lifting cords by a predetermined load acting in a direction away from each other.
-By providing a damper in the grip, the ball chain may be resisted when the shielding member descends.
As shown in FIG. 4, the other lifting cords 9l and 9r may be connected to one of the lifting cords 9c among the plurality of lifting cords 9 at the connection portion 13 to form a single cord.
As shown in FIG. 5, a plurality of lifting cords 9 may be knitted into one braided cord 26 and used as a single cord.

Second Embodiment
A second embodiment of the present invention will be described using FIG. The present embodiment is similar to the first embodiment, and hereinafter, differences will be mainly described.

  In the present embodiment, the pulleys 14 and 20 are disposed in the head box 1. The pulleys 14 and 20 are rotatably supported with respect to the head box 1.

  The stopper portion 16 is configured to pass the lifting cord 9 but not to pass the ball chain 12. Therefore, when the ball chain 12 reaches the stopper portion 16 in the movable range of the bottom rail 4, the ball chain 12 stops It interferes with the part 16. Therefore, in the present embodiment, the tension cord 19 is drawn around in the head box 1 so that the ball chain 12 does not reach the stopper portion 16 in the movable range (between the upper limit position and the lower limit position) of the bottom rail 4 .

  Further, in the present embodiment, as shown in FIG. 6A, the connection portion 13 is disposed at a position away from the operation rod 8 in the head box 1 in a state where the bottom rail 4 is at the lower limit position. .

  Here, a specific configuration example will be described with reference to FIG. As shown in FIG. 6A, the stopper portion 16 is disposed substantially at the left end of the head box 1, the pulley 20 is disposed at the left end side of the head box 1, and the pulley 14 is disposed at the right end side of the head box 1. It is arranged. The pulley 20 has the same configuration as the pulley 14. The tension cord 19 is hooked on the pulley 20 and the pulley 14, the operation side 19 o thereof is drawn out from the pulley 14 side, and the support side 19 s is drawn out via the stopper portion 16.

  According to such a configuration, since the length of the tensile cord 19 between the stopper portion 16 and the lower end of the operating rod 8 is long, the bottom rail 4 is at the lower limit position as shown in FIG. In the state, and as shown in FIG. 6B, in any state between the state where the bottom rail 4 is at the upper limit position, since the connection portion 13 is disposed in the head box 1, the connection with the lifting cord 9 is made. The loop formed by the portion 13 is not exposed to the outside at all, and the safety is extremely high.

The present invention can also be practiced in the following modes.
A damper may be incorporated in at least one of the pulleys 14 and 20.
The pulling cord 19 may not be inserted into the operating rod 8.
Instead of the ball chain 12 as a single cord, another kind of cord may be connected to a plurality of lifting cords 9 or a plurality of lifting cord extensions may be used as a single cord.
The connection portion 13 may be arranged in the operating rod 8 with the bottom rail 4 in the upper limit position. Even in this case, the same effects as those of the above embodiment can be obtained.
The connection portion 13 may be configured to be pulled out from the lower end of the operating rod 8 with the bottom rail 4 in the upper limit position.

1: Head box 2: 2: Ladder cord: 213: slat 4: 4: bottom rail 5: support member 6: 6: drum 7: 7: angular adjustment shaft 8: operating rod 9: elevation cord 10: cord equalizer 11 : Grip, 12: Ball chain, 13: Connection, 14, 20: Pulley, 15: Rotational resistor, 16: Stopper, 19: Tension cord, 19s: Support side of tension cord, 19o: Operation side of tension cord , 26: knitting code

Claims (3)

A shielding device for raising and lowering a shielding material by pulling a tensile cord, comprising:
The tensile cord is configured by connecting a single cord directly or indirectly to a plurality of lifting cords provided on the side of the shielding member at a connection, or a plurality of elevations provided on the side of the shielding material A shielding device, wherein the cords are connected to each other at a connection portion to be a single cord, and have any one of the following configurations (1) to (2).
(1) A plurality of lifting cords and connection parts can be inserted through the hollow rod and the single cord can be inserted into the hollow rod.
(2) The connection is configured to be always in the head box. The shielding device according to claim 1, wherein the connection portion is configured not to be exposed to the outside from the lower end side of the hollow rod when the shielding material is at the upper limit position. The shielding device is a shielding device in which the support side and the operation side of the tensile cord are led out from the head box, and by pulling the operation side, the lead length of the support side is changed to raise and lower the shielding material.
The said hollow rod is a shielding apparatus of Claim 1 or 2 suspendedly supported from the said head box.