JPH04235Y2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) This invention relates to a mounting structure for a locking member that locks the lower end of a ladder cord to the bottom rail of a blind.

(Prior Art) Usually, a blind has multiple stages of slats supported by a ladder cord, and a bottom rail is suspended and supported from the lower end of the ladder cord. The structure for attaching the ladder cord to the bottom rail is as shown in FIG. 4, in which the lower end of the ladder cord 3 is locked to the bottom rail 1 by a locking tool 2.

(Problem to be solved by the invention) However, in the ladder cord mounting structure as described above, the locking tool 2 is fitted from the bottom to the side of the bottom rail 1, so when the slat is in a horizontal state and In any case where the slat is tilted in the vertical direction, a portion of the locking tool 2 is exposed to the indoor side, which poses a problem in that it is not aesthetically pleasing. In addition, when the bottom rail 1 is tilted in the vertical direction, the vertical middle part of the side surface of the bottom rail 1 is pulled upward by one warp of the ladder cord 3, making it difficult for the bottom rail 1 to tilt. Another problem is that it is not easy to adjust the angle of each slat in the vertical direction.

Structure of the invention (Means for solving the problems) In order to solve the above problems, this invention makes the upper surface 12 of the bottom rail 11 approximately the same width as the slats, and also makes the lower surface of the bottom rail 11 wider than the upper surface. Side 1 of the same bottom rail 11 as narrow width
A fitting groove 16 is provided in the lower surface 14 of the bottom rail 11, and a locking member 21 that fits into the fitting groove 16 connects the lower end of the ladder cord 20 to the lower surface 14. The configuration is such that it is locked in place.

(Function) With the above means, when the bottom rail 11 is suspended and supported in the horizontal direction, the lower surface 14 of the bottom rail 11 is maintained in the horizontal direction, so the locking member 21 fitted into the fitting groove 16 is blind. It becomes almost invisible from the side view, and when the bottom rail 11 is rotated, the locking member 21 is hidden by the top surface 12 from the side view of the blind in the direction in which the top surface 12 of the bottom rail 11 is rotated. It becomes invisible.

(Embodiment) An embodiment embodying this invention will be described below with reference to FIGS. 1 to 3. The bottom rail 11 of the blind has an upper surface 12 formed to have approximately the same width as the slat 13. At the same time, the lower surface 14 is formed to have a width approximately half that of the upper surface 12, and both side surfaces 15 are formed as symmetrical slopes facing obliquely downward.

A fitting groove 16 is formed on the lower surface of the bottom rail 11 over the entire length in the longitudinal direction, and a step 17 is formed in the inner part or upper part of the fitting groove 16 so that the groove width becomes larger. An insertion hole 19 is formed at an appropriate position on the top surface of the bottom rail 11 to allow the lifting cord 18 to pass therethrough.

A locking member 21 for locking the lower end of the ladder cord 20 to the bottom rail 15 is molded from synthetic resin, and a pair of locking pieces 23 protrudes upward from the left and right sides of the base 22. The width of the locking piece 23 is formed to be almost the same as the width of the fitting groove 16 of the bottom rail 11, so that it can be fitted into the fitting groove 16, and the locking piece 23 is fitted with the steps 17 on both the front and back sides of the tip. An arrowhead-shaped protrusion 24 is formed.

A locking groove 25 is formed in the center of the base 22 in the left-right direction, and when the locking member 21 is fitted into the fitting groove 16 of the bottom rail 11, a ladder is formed between the locking groove 25 and the bottom rail 11. The cord 13 is sandwiched between the cords 13 and 13.

To connect the lower ends of the ladder cord 20 and the lifting cord 18 to the bottom rail 11 configured as described above, first insert the lifting cord 18 into the insertion hole 19 from above the bottom rail 11, and tie a knot at the lower end of the lifting cord 18. 26 is provided, and the knot 26 is engaged with the insertion hole 19. On the other hand, ladder code 2
0 ties the lower end of the warp below the bottom rail 15, and connects the knot 27 to the locking piece 23 of the locking member 21.
The locking piece 2 of the locking member 21 is positioned between
3 into the fitting groove 16 of the bottom rail 11,
As shown in FIG. 1, when the projection 24 of the locking piece 23 is engaged with the step 17 in the fitting groove 16, the locking member 2
1 is stably held in this state, and the lower end of the ladder cord 20 is immovably clamped between the fitting groove 16 and the locking member 21.

Now, in the mounting structure of the bottom rail 11 and the ladder cord 20 as described above, when the ladder cord 20 is driven by the operating means, the angles of each slat 13 are adjusted in the same phase, and at this time, the angle of each slat 13 is adjusted in the same phase.
1 is also tilted in the same phase. Then, when the angle of the slat 13 is adjusted from the state shown in FIG. 1 and the protruding surface of the slat 13 is tilted vertically with the protruding surface facing the indoor side as shown in FIG. 3, the lower surface of the bottom rail 11
4 is directed toward the outside of the room, so it is hidden behind the upper surface 12 and cannot be seen from the inside of the room as indicated by arrow A. In addition, as shown in FIG. 1, the bottom rail 11
Even when the locking member 21 is suspended and supported in the horizontal direction,
Since it is almost recessed into the fitting groove 16, it is almost invisible from the indoor side.

Therefore, in this ladder cord 20 mounting structure, when the angle is adjusted so that the protruding surface of the slat 13 is directed toward the indoor side as shown in FIG. 3, the locking member attached to the lower surface 14 of the bottom rail 11 21 is not visible from the indoor side, and even when the angle of the slat 13 is adjusted to be horizontal, the locking member 21 is not visible from the indoor side, so that the aesthetic appearance of the room is not spoiled.

Also, the lower end of the ladder cord 20 is connected to the bottom rail 1.
Since the slat 13 is attached to the lower surface 14 through the side surface 15 forming the slope of the slat 1, as shown in FIG.
When adjusting the angle in the vertical direction, use one warp thread of the ladder cord 20 to adjust the angle of the bottom rail 11.
Since the bottom rail 11 is pulled up, it is easy to rotate the bottom rail 11 in the vertical direction, and therefore the angle of the slat 13 can be easily and reliably adjusted with a slight operating force.

Effects of the invention As detailed above, this invention
When the angle is adjusted in the horizontal direction and the slat 13
Even when the angle of the slat 13 is adjusted in the vertical direction by rotating the projecting surface toward the indoor side, the locking member 21 can be hidden from view from the indoor side, improving the aesthetic appearance of the blind. By making the side surface 15 of the rail 11 a slope, the bottom rail 1 can be easily tilted in the vertical direction, which provides an excellent effect of easily adjusting the angle of the slat 13 in the vertical direction. .

[Brief explanation of drawings]

Figure 1 is a vertical cross-sectional view showing an example of a ladder cord mounting structure that embodies this idea, Figure 2 is an exploded perspective view of the bottom rail and locking member, and Figure 3 is a state in which the bottom rail is tilted. FIG. 4 is a cross-sectional view showing a conventional example related to this invention. Bottom rail...11, Top surface...12, Bottom surface...
…14, Side face…15, Fitting groove…16, Ladder cord…20, Locking member…21.

Claims (1)

[Scope of utility model registration request] The upper surface 12 of the bottom rail 11 is made to have approximately the same width as the slats, and the lower surface of the bottom rail 11 is narrower than the upper surface, and the side surface 15 of the bottom rail 11 is formed into a slope diagonally downward. A ladder cord for a bottom rail of a blind, characterized in that a fitting groove 16 is provided in the bottom surface 14, and the lower end of a ladder cord 20 is locked to the bottom surface 14 by a locking member 21 that fits into the fitting groove 16. mounting structure.