JPH0450397Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a blind louver locking tool for attaching the blind louver of a horizontal blind to a hanging string hanging from an upper frame.

Generally, blinds used as a light shielding device for windows, etc., as shown in Fig. 1, have blind louvers 3 made of metal or synthetic resin sheets attached at regular intervals to ladder-like suspension strings 2 hanging from an upper frame 1. ,
On one side of the upper frame 1 hangs a string 5 that opens and closes the blind by raising and lowering the lower frame 4, and on the other side of the upper frame 1 is a string 6 that allows the blind louver 3 to rotate with the blind open. It consists of hanging down. Recently, the strings 5 and 6 are sometimes provided on one side.

In such a blind, the conventional locking tool 7 for attaching the blind louver 3 to the hanging string 2 has a cross section on both sides of the louver mounting plate 8 on which the blind louver 3 is mounted, as shown in FIG. In addition to forming an L-shaped key-shaped protrusion 9, a substantially semicircular groove 10 is formed at a location sandwiched by the key-shaped protrusion 9, and the hanging string 2 is positioned in this groove 10, and the hanging string 2 is placed in the groove 10. After the weft thread 11 stretched between the strings 2 is placed on the louver mounting plate 8, the blind louver 3 is inserted and locked into the key-shaped protrusion 9 from the side to attach the blind louver 3 to the hanging string 2.

However, when attaching the blind louver 3 using such a conventional locking tool 7, the weft thread 1
Since the threads 1 are in contact with both edges of the blind louver 3, the weft thread 11 is gradually shaved off when the blind louver 3 turns, and there is a risk that the weft thread 11 will eventually be cut.

The object of the present invention is to provide a locking tool for a blind louver that can be used for a long period of time by preventing the weft from coming into contact with the edge of the blind louver 3 to reliably prevent the weft from being cut. , in a blind louver locking device that attaches a blind louver to the weft of a ladder-like suspension string suspended from an upper frame, the louver mounting plate on which the blind louver is placed and the weft of this louver mounting plate extend. A plurality of pairs of blind louvers are arranged opposite to each other in the direction in which the weft is held, and a plurality of pairs of blind louvers are formed to sandwich and hold the blind louvers. a pair of hanging string anchoring pieces connected in the weft direction, and a weft anchoring groove for anchoring the weft thread, which is opened and drilled on the side of one of the key-shaped protrusions of these hanging string anchoring pieces. , and a pair of recesses formed in the louver mounting plate into which the pair of hanging cord securing pieces fit when the pair of hanging cord securing pieces are folded back and the weft is held between them.

Hereinafter, one embodiment of the present invention will be described based on FIG. 3 and subsequent figures.

FIG. 3 is a plan view of the blind louver locking device 12 according to the present invention, and FIG.
FIG. In these figures, 13 is a louver mounting plate on which a blind louver is placed;
4 is a key-shaped protrusion that clamps and secures the blind louver; 15 is a hanging string attachment piece that attaches the hanging cord 2;
and the hanging string attachment piece 15 are integrally formed of flexible synthetic resin. The louver mounting plate 13
is curved with substantially the same curvature as the blind louver 3 so as to be in close contact with the blind louver 3, and a long hole 116 is bored in the center thereof through which a cord for lifting and lowering passes. The key-shaped projections 14 are formed at four corners on both sides of the louver mounting plate 13. Between the key-shaped protrusions 14, the hanging string engaging piece 15 is formed to protrude laterally from the edge of the louver mounting plate 13. This hanging string attachment piece 1
A weft thread anchoring groove 16 is formed in the base of the suspension string 5 to open on one key-shaped protrusion 14 side for engaging the weft thread 11 of the suspension string 2, and the base is bendable. The louver mounting plate 1 serves as a bent portion 17.
It is formed integrally connected with 3. Blind louvers 3 are provided on both sides of the weft thread engagement groove 16.
A semicircular groove 18 that becomes wider in the transverse direction is formed respectively, and when the hanging string attachment piece 15 is bent 180 degrees, the semicircular groove 18 coincides with the vertical direction, and a semicircular groove is formed on the side of the hanging cord attachment piece 15. It is designed to allow the formation of shaped grooves. Further, a protrusion 19 is formed on the upper surface of the hanging string anchoring piece 15 at a location adjacent to the weft thread anchoring groove 16, and a protrusion 20 is formed on the lower surface. And the louver mounting plate 13 adjacent to the hanging string attachment piece 15
A recess 21 that is slightly deeper and slightly larger than the thickness of the hanging string attachment piece 15 is formed in the holder.

FIG. 5 is a perspective view showing the blind louver 3 attached to the hanging cord 2 with the blind louver locking tool 12. Moreover, FIG. 6 shows a partial sectional view. To attach the blind louver 3, first place the weft thread 11 on the louver mounting plate 13 through the weft thread engagement groove 16, then fold back the hanging string engagement piece 15 and fit it into the recess 21, and suspend the weft thread 11. While being held between the string attachment piece 15 and the recess 21, the protrusion 19
This prevents it from coming off the weft thread engagement groove 16.
Next, the blind louver 3 is inserted into the key-shaped protrusion 14 to complete the installation. At this time, as shown in the partial cross-sectional view of FIG. It is in a state where it is firmly clamped.

FIG. 7 shows the state in which the main latching device 12 is attached to the suspension string 2 provided with double weft threads 11 and 22 to prevent the slat from floating up. is attached with the lower weft thread 11 sandwiched therebetween.

Since the present invention is constructed as described above, the weft threads are sandwiched between the hanging string anchoring pieces and the recesses on both sides of the louver mounting plate, and are led out to the sides via the weft thread anchoring grooves. A hanging string attachment piece is always interposed between the horizontal strip and the edges on both sides of the blind louver.
The weft threads do not come into contact with the edges on both sides. Therefore, the durable life of the blind is increased without the blind louver falling off due to the weft breaking during use, and the ladder cord (cord for raising and lowering)
This has the effect of eliminating misalignment.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram showing the overall structure of the blind, Fig. 2 is a perspective view showing how it is installed using a conventional blind louver fastener, and Fig. 3 is a blind louver fastener according to the present invention. 4 is a sectional view taken along the line A-A in FIG. The figure is a perspective view showing another embodiment. 1... Upper frame, 2... Hanging string, 3... Blind louver, 12... Blind louver locking tool, 13... Louver mounting plate, 14... Key-shaped protrusion, 15... Hanging string attachment Piece, 16... Weft thread engaging groove, 17... Bent part, 21... Recessed part.

Claims (1)

[Scope of utility model registration request] In a blind louver locking device that attaches a blind louver to the weft of a ladder-like suspension string suspended from an upper frame, there is a louver placement plate on which the blind louver is placed, and the weft of this louver placement plate extends. A plurality of pairs of blind louvers are arranged facing each other on both sides of the direction, and are formed in pairs to sandwich the weft threads. A key-shaped protrusion that clamps and secures the blind louvers, and a bending part that is freely bendable between the pair of key-shaped protrusions serves as a louver mounting plate. A pair of connected hanging string anchoring pieces in the weft direction, and a weft anchoring groove for anchoring the weft thread, which is opened and drilled on the key-shaped protrusion side of one of these hanging string anchoring pieces. A blind louver comprising: a pair of recesses formed in the louver mounting plate into which the hanging cord engaging pieces fit when the pair of hanging cord engaging pieces are folded back and the weft is held between them. Locking device.