JPH053675Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a support device for attaching a bottom rail to a lifting cord hanging down from a head box of a horizontal blind.

[Conventional technology]

In general, horizontal blinds have a ladder-like structure, as shown in Figs. 1 and 2, consisting of two cords 2a, 2a hanging in parallel from a head box 1, and connecting portions 2b connecting both cords at appropriate intervals. The slats 3 are placed on the connecting portions 2b of the cords 2, and the lower ends of the cords 2a are connected to both sides of the bottom rail 4, and the lifting cords 5 hanging from the head box 1 are attached to each slat. 3, and its lower end is connected to the upper part of the bottom rail 4.
The blind is opened and closed by moving the bottom rail 4 in the vertical direction and raising or lowering the bottom rail 4.

After lowering the bottom rail 4 of the blind to the lowest position near the window frame 8, when adjusting the light shielding, as shown in Figure 2, the ladder cords 2a, 2a hanging left and right are moved up and down in opposite directions. This is done by moving the ladder cords 2a and tilting the slats 3 placed on the left and right cord connecting portions 2b of the ladder cords 2a. The bottom rail 4 and the lifting cord 5 are the seventh
As shown in the drawings and FIG. 8, the lifting cord 5 is inserted into a hole 4b drilled at a predetermined position in the upper part of the bottom rail 4, and is connected to the bottom rail 4.

A hole 3a is formed in the slat 3 so that it does not come into contact with the lifting cord 5 even if the slat 3 tilts, and the lifting cord 5 is inserted through the hole 3a so that its lower end is connected to the bottom rail 4. is connected to. The lower end of the ladder cord 2a is connected to the ladder cord fixing tool 7.
The engaging parts 2c, 2 on both sides of the bottom rail 4 are
It is attached to d.

[Problem that the invention attempts to solve]

Conventional horizontal blinds are configured as described above, so after operating the lift cord 5 and lowering the bottom rail 4 to the position closest to the lower window frame 8, the ladder cord 2a is moved to adjust the light blocking. ,2
When a is moved up and down in the directions shown by the arrows in FIG. 8, the hole 4 to which the lifting cord 5 is connected
The bottom rail 4 is rotated counterclockwise (in the direction of the arrow) about b as the center, but the center of gravity of the bottom rail 4 is located below the connecting part, and the movement of the center of gravity causes the bottom rail 4 to rotate. A moment is generated to try to return to a stable state, and this moment acts to prevent the bottom rail 4 from rotating in the direction of the arrow. As a result, bottom rail 4
There was a problem in that the tilting of the upper slat 3 was hindered and the light-shielding performance of the blind was reduced.

In order to solve the above problems, the present invention provides a support for attaching the lifting cord to the bottom rail, so that the bottom rail can be rotated without resistance, and the slats can be tilted reliably. The object of the present invention is to provide a horizontal blind having good light-shielding properties.

[Means for solving problems]

The present invention is characterized by the following configuration in order to solve the above-mentioned problems and achieve the object of the invention.

That is, the elevating cord is inserted into an elongated hole drilled in the upper part of the bottom rail of the horizontal blind, and the hole has an elongated hole-shaped opening at the top and the lower end of the elevating cord is fixed to the bottom. A support having a funnel-shaped cross section was fitted, and the long diameter side of the opening was formed to a size that would prevent the lifting cord from coming into contact with the bottom rail when the bottom rail was tilted.

[Example] Hereinafter, an example of the present invention will be described based on the drawings. 3 is a perspective view of a support showing an embodiment of the present invention, FIG. 4 is a sectional view showing the mounting state of the support shown in FIG. 3, and FIG. 5 is a plan view of FIG. FIG. 6 is a sectional view showing the bottom rail of FIG. 4 in a rotated state.

In FIG. 3, reference numeral 10 denotes a support, which is made of synthetic resin and has an elongated opening 10c at the top.
It has a funnel-shaped cross section, and a hole 10b through which the lifting cord 5 is inserted is provided at the bottom.
Two legs 10a, 10a are formed at the lower part of the support 10 for disposing the support 10 inside the bottom rail and fixing it in a predetermined position, and a bottom rail 4 is formed at the outer peripheral edge of the upper opening 10c. A flange edge is formed to securely fit the upper opening 10c into the elongated hole 4a.

To attach the support 10 formed as described above to the bottom rail 4, as shown in FIG. The flange on the outer periphery of the opening 10c provided in the bottom rail 4 is fitted into an elongated hole 4a (see FIG. 5) bored at a predetermined position in the upper part of the bottom rail 4.
At that time, both legs 10a, 10a of the support 10 are in contact with the inner bottom surface of the bottom rail 4, so the support 10
is securely fixed within the bottom rail 4. Lifting cord 5 inserted through hole 3a of slat 3 and hanging down
passes through the center of the upper opening 10c of the support 10, and the connection part with the hole 10b is lower than the connection parts 2c, 2d of the ladder cords 2a, 2a on both sides of the bottom rail 4. be located at

To explain the use of the blind with the above-mentioned support attached, first lower the blind to the lowest position near the window frame 8, then move the left and right ladder cords 2a, 2a up and down in the direction of the arrow as shown in FIG.
Light shielding is adjusted by tilting the slats 3 accordingly.

It should be noted that the present invention is not limited to the support device of the above embodiment, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

[Effect of idea]

Since the present invention is configured as described above, it has the following effects.

In other words, the cross section has an elongated hole drilled in the upper part of the bottom rail, through which the elevating cord is inserted, an elongated opening at the top, and a hole at the bottom to which the lower end of the elevating cord is connected. A funnel-shaped support was fitted, and the long diameter side of the opening was formed to a size that would prevent the lifting cord from touching when the bottom rail was tilted, so the left and right ladder cords could be moved up and down to lift the bottom rail. When the bottom rail is rotated, the end of the elongated hole of the bottom rail approaches the lifting cord that hangs down the center of the upper opening of the support, but the upper opening of the support does not move even when the bottom rail rotates. Since the lifting cord is formed in a size that does not touch it, the bottom rail can rotate freely without being blocked by the lifting cord, and therefore the slat attached to the ladder cord can be tilted reliably. , the light shielding adjustment becomes better. In addition, it has many effects as a bottom rail rotating support for a blind, such as preventing local tension from acting on the lift cord or ladder cord and damaging them, and increasing the durability of the blind.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing the overall structure of the blind, Fig. 2 is a side view of Fig. 1, Fig. 3 is a perspective view showing an embodiment of the bottom rail rotation support device according to the present invention, and Fig. 4. is a sectional view showing the installation state in Fig. 3;
FIG. 5 is a plan view of FIG. 4, FIG. 6 is a sectional view showing the bottom rail in FIG. 4 in a rotated state, and FIG. 7 is a plan view showing the attachment state of the conventional lifting cord and bottom rail. FIG. 8 is a sectional view of FIG. 7. 2...Ladder cord, 3...Slat, 4...
Bottom rail, 5...lifting cord, 10...support device.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A support having a long hole-shaped opening at the top, a funnel-shaped cross section, and a hole at the bottom through which the lifting cord is inserted is attached to the bottom rail. Store it inside the
The elongated opening of the support is fitted into an elongated hole formed in the upper part of the bottom rail in the width direction of the bottom rail, and a lifting cord is connected to the hole of the support. A bottom rail rotation support device for a blind, which is characterized in that the bottom rail of the blind is fixed. (2) The bottom rail rotation support device for a blind according to claim 1, wherein the position where the lifting cord of the support is connected is located below the position where the ladder cord is attached to the bottom rail.