JPH059889Y2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) This invention relates to a lifting cord winding device for winding up and down lifting cords for lifting up and down curtains, slats of blinds, etc.

(Prior Art) Conventionally, for example, in the case of a pull-up curtain, a lifting cord having one end connected to a take-up roller in a head box is wound around the take-up roller to raise and lower the curtain suspended from the head box. Ta.

(Problems to be solved by the invention) In the above-mentioned conventional lift-up curtain lifting cord winding device, the knot for tying the upper end of the lifting cord to the winding roller is exposed on the circumferential surface of the winding roller. There was a problem in that when the lifting cord was wound around the winding roller, uneven winding occurred due to the knots, making it impossible to raise and lower the curtain smoothly.

Structure of the invention (means for solving the problem) In order to solve the above-mentioned problem, this invention has a structure in which a lifting cord 4 whose upper end is connected to a winding roller 19 in the head box 2 is wound around the winding roller 19. A flange 22 is attached to the take-up roller 19 in a pull-up curtain or the like in which the curtain 3 is raised or lowered by lifting the curtain.
In addition, the flange 22 is provided with an insertion hole 23 for the lifting cord 4, the upper end of the lifting cord 4 is inserted into the insertion hole 23, and the lifting cord 4 is provided with a retaining portion 24 for the insertion hole 23 on one side of the flange 22.
In addition, a lifting cord winding device such as a fold-up curtain for winding up the lifting cord 4 on the other side of the flange 22 is employed.

(Function) By the above means, the lifting cord winding portion of the winding roller 19 and the slip-off prevention portion 24 of the lifting cord 4 are separated by the flange 22.

(Example) Hereinafter, an example in which this invention is embodied in a fold-up curtain will be described with reference to the drawings.

As shown in FIG. 2, the rolled-up curtain 1 has a curtain 3 suspended from a head box 2. Further, four lifting cords 4 are suspended from the headbox 2, and their lower ends are fixed to the lower ends of the curtains 3, and their upper ends are respectively connected to lifting cord winding devices 5, which will be described later, arranged inside the headbox 2. ing.

A lifting device 6 is provided at one end of the head box 2, and an operation cord 7 is suspended from the lifting device 6.
By operating the curtain 3, the curtain 3 is raised and lowered. Furthermore, wires W are provided at both left and right ends of the curtain 3, and the upper ends are fixed to the lifting cord winding devices 5 on both sides, and the lower ends are fixed to the floor surface, etc., and the curtain 3 is moved along these wires W when going up and down. Both the left and right ends of can be moved. Note that both wires W and each of the lifting cords 4 pass through a large number of guide rings (not shown) provided vertically in the curtain 3 at equal intervals.

Next, the lifting cord winding device 5 for winding up the lifting cord 4 in the head box 2 will be explained.As shown in FIG.
The support stand 8 has a pair of side plates 10 on both sides of its bottom plate 9.
a and 10b are erected, and a mounting portion 11 is formed by extending the bottom plate 9 on the outside of one side plate 10a. A nut support part 13 that non-rotatably supports the nut 12 is protruded from the upper surface of the mounting part 11, and a through hole 14 is provided in the center of the nut support part 13. Moreover, as shown in FIG. 3, both side plates 10
An opening 15 is provided in the bottom plate 9 between a and 10b, and a protrusion 16 is formed on the periphery of the opening 15, and as shown in FIG. 4, the protrusion 16 is formed in the longitudinal direction of the lower surface of the head box 2. It is adapted to engage with the opening groove 2a.

A roller support hole 17 is formed in the center of both side plates 10a and 10b of the support base 8, and a roller insertion groove 18 is formed above the roller support hole 17 in one side plate 10b. and,
Both ends of a take-up roller 19 are inserted into both roller support holes 17, and the take-up roller 19 is rotatably supported.

The take-up roller 19 has first and second flanges 20 and 21 formed at positions slightly inward from both side plates 10a and 10b, and both flanges 20 and 21 form the take-up roller 1.
9 is positioned in its axial direction. A third flange 22 is formed near the second flange 21 between the flanges 20 and 21, and the third flange 22 is provided with an insertion hole 23 through which one lifting cord 4 can be inserted. One end of the lifting cord 4 is inserted through the insertion hole 23 from the center side of the winding roller 19, and a knot 24 is formed at the tip of the lifting cord 4, so that the upper end of the lifting cord 4 is connected to the winding roller 19. The lifting cord 4 is supported and is suspended downward from an opening 15 in the bottom plate 9.

A hexagonal hole 25 is formed in the axis of the take-up roller 19, and a hexagonal rod-shaped rotating shaft 26 is fitted into the hexagonal hole 25. This rotating shaft 26 is connected to the lifting device 6, and a force that tries to rotate the rotating shaft 26 due to the weight of the curtain 3 is always applied to the rotating shaft 26, and an operating cord 7 hanging from the lifting device 6 acts on the rotating shaft 26 at all times. When is operated, the rotating shaft 26 is rotated against its own weight, and the take-up roller 19 is rotated.

The clamping member 27 for fixing the support base 8 to the head box 2 is formed in the shape of an inverted quadrangular truncated pyramid, with a recess 28 formed in the lower surface of the center, a through hole 29 formed in the center, and a through hole 29 formed in the upper surface. Support protrusions 3 are provided at regular intervals from the through holes 29, respectively.
0 is formed.

The wire support fitting 31 is formed by bending a long plate into a crank shape, and has a long hole 32 on one side and a wire support hole 33 on the other side.

Such a wire support fitting 31 is used as a clamping member 27.
The holding member 27 is supported movably only in the longitudinal direction between the support projections 30 of the head box 2, and the support projections 30 engage between the opening grooves 2a of the head box 2. Then, one side of the wire support fitting 31 is inserted into the support protrusion 30 of the clamping member 27, and with the support protrusion 30 of the clamping member 27 positioned in the opening groove 2a of the head box, the screw 34 is inserted from below into the clamping member. 27 through hole 29, wire support fitting 31
When the head box 2 is inserted through the elongated hole 32 and screwed into the nut 21 in the nut support section 13, the head box 2 is clamped between the clamping member 27 and the support base 8, as shown in FIGS. 3 and 5. For this reason, the support stand 8 is fixed to the head box 2, and at the same time, the wire support fitting 31 is immovably supported between the support stand 8 and the clamping member 27.

The upper end of the wire W is fixed to the wire support hole 33 of the wire support fitting 31.

Note that the wire support fitting 31 is attached to the head box 2.
provided in the lifting cord winding device 5 at both left and right ends of the
It is not attached to other lifting cord winding devices 5.

Next, the operation of the lift-up curtain lifting cord winding device 5 constructed as described above will be explained.

Now, by loosening the screw 34, the lifting cord winding device 5 can be moved along the opening groove 2a of the head box 2. In this state, move the lifting cord winding device 5 to a desired position and tighten the screw 34. Once inserted, the lifting cord winding device 5 is fixed at a desired position, and the wire support fittings 31 of the lifting cord winding devices 5 at both left and right ends are also fixed at the same time.

In this state, when the operating cord 7 hanging from the lifting device 6 is operated to rotate the rotating shaft 26, the lifting cord 4 is wound around the winding roller 19, and the curtain 3 is raised and lowered. At this time, each lifting cord 4 is wound one turn at a time between the first flange 20 and the third flange 22 of the winding roller 19, as shown in FIG. Since the knot 24 at the upper end of the lifting cord 4 is located outside the third flange 22, the lifting cord 4 is wound around the winding roller 19 without being interfered with by the knot 24.

Therefore, this lifting cord winding device 5 has a knot 2
The lifting cord 4 can be wound onto the take-up roller 19 without being interfered with by the take-up roller 19.
The lifting cord 4 of the same length can always be wound up per rotation, and as a result, the amount of lifting and lowering of the curtain 3 by each lifting cord winding device 5 can always be kept equal. In addition, since the lifting cord 4 can be smoothly wound and unwound, the curtain 3
The lifting and lowering operations can be performed smoothly.

Further, by operating the screw 34, the lifting cord winding device 5 can be moved to a desired position in the head box 2 and fixed therein. and,
A mounting portion 11 for fixing the lifting cord winding device 5 to the head box 2 is attached to the lifting cord winding device 5.
Since the head box 2 is provided integrally with the holding member 27, the head box 2 can be easily held between the holding member 27 and the number of parts can be reduced.

Note that this invention is not limited to the above-mentioned embodiment, and for example, in the above-mentioned embodiment, it was embodied in a lifting cord winding device for a pull-up curtain that lifts and lowers the curtain 3, but it can also be applied to a lifting cord winding device for a blind, etc. that lifts and lowers a slat. It may be embodied in a collecting device.

Effects of the Invention As detailed above, the lifting cord winding device 5 of this invention allows the lifting cord 4 to be moved around the winding roller 19 without being interfered with by the retaining portion 24 of the lifting cord 4.
Since it can be rolled up, it has an excellent effect of smoothly raising and lowering curtains, etc.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of an elevating cord winding device that embodies this invention in a pull-up curtain, Fig. 2 is an overall schematic view of the hoisting curtain, and Fig. 3 is a longitudinal cross-sectional view of the elevating cord winding device. Figure 4 is a sectional view taken along line X-X in Figure 3, and Figure 5 is a cross-sectional view taken along line X-X in Figure 3.
-Y sectional view. The lifting curtain 1, the head box 2, the curtain 3, the lifting cord 4, the lifting cord winding device 5, the winding roller 19, the third flange 22, the insertion hole 23, and the knot 24.

Claims (1)

[Scope of Claim for Utility Model Registration] A take-up roller for a pull-up curtain or the like in which a curtain 3 is raised and lowered by winding a lift cord 4 whose upper end is connected to a take-up roller 19 in a head box 2 onto the take-up roller 19. 19 is provided with a flange 22, and the flange 22 is provided with an insertion hole 23 for the lifting cord 4.
The upper end of the lifting cord 4 is inserted into the insertion hole 23, and a retaining portion 24 for the insertion hole 23 is provided on the lifting cord 4 on one side of the flange 22, and the lifting cord 4 is wound on the other side of the flange 22. A lifting cord winding device for lifting curtains, etc., characterized by: