JPH056092U - Blind ladder cord stop - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to prevent lateral slippage of the ladder cord stopper with respect to the bottom rail without processing the bottom rail. [Construction] Protruding strips 12 are provided on the lower portions of both side surfaces of the bottom rail 1 of the blind in the front-rear direction. The bottom rail 1 is inserted on the lowermost weft thread 3a of the ladder cord 2 and is projected from below the weft thread 3a. The lower end of the ladder cord 2 is clamped and fixed between the stopper 11 fitted to the strip 12 and the bottom surface of the bottom rail 1, and both ends of the ladder 11 are fixed to the protrusion 12 of the bottom rail 1 on the stopper 11. In the fitted state, the locking ridges 15 are pressed against both ends of the bottom rail 1 in the front-rear direction.
Is provided. With such a configuration, the friction between the stopper 11 and the bottom rail 1 increases.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a stopper for fixing the lower end of a ladder cord supporting a blind slat to a bottom rail.

[0002]

[Prior Art]

 In a conventional horizontal blind, a large number of slats are supported by a plurality of ladder cords suspended from the head box, and the lower end of each ladder cord is, for example, as shown in FIG. A stopper 4 formed of, for example, a synthetic resin is inserted into the lower weft thread 3a, and in this state, the lower ends of the weft thread 3a and the warp thread 3b are sandwiched between the lower surface of the bottom rail 1 and the bottom rail 1, for example. The bottom end of each ladder cord 2 is fixed to the bottom rail 1 by being fitted. Then, the protrusion 5 formed on the upper surface of the stopper 4 is fitted into the through hole 6 formed on the lower surface of the bottom rail 1 to prevent lateral displacement of the stopper 4 in the longitudinal direction of the bottom rail 1. There is something. There is also a structure in which a double-sided adhesive tape is attached between the upper surface of the stopper 4 and the lower surface of the bottom rail 1 to prevent lateral displacement of the stopper 4.

[0003]

[Problems to be solved by the device]

 In the structure in which the protrusion 5 of the stopper 4 is fitted into the through hole 6 on the lower surface of the bottom rail 1 as described above, the through hole 6 used for attaching the lower end of the lifting cord 7 to the bottom rail 1 is used. There is. That is, the through hole 6 provided on the lower surface of the bottom rail 1 is provided for inserting the knot 7a into the lifting cord 7 inserted through the bottom rail 1 and inserting the knot 7a into the bottom rail 1 through the through hole 6. It is a thing. However, since the ladder cord 2 is also provided at a position where the lifting cord 7 is not attached, it is necessary to previously provide the through hole 6 at that position as well. Therefore, it is necessary to provide the through hole 6 for attaching the ladder cord 2 to the bottom rail 1, which increases the number of processes for the bottom rail 1. If the shapes of the through hole 6 and the protrusion 5 do not match, the stopper 4 will be laterally displaced, so that the through hole 6 has a shape that does not hinder the attachment work of the lifting cord 7 and that the protrusion 5 is attached. It is necessary to accurately match the shape.

On the other hand, in a configuration in which the stopper 4 is prevented from laterally shifting with respect to the bottom rail 1 by using the double-sided tape, the stopper 4 and the bottom rail 1 are not stably bonded due to the difference in the thickness and material of the double-sided tape. In some cases, if the double-sided tape is peeled off, there is a problem that lateral displacement occurs.

An object of the present invention is to prevent lateral displacement of the ladder cord stopper with respect to the bottom rail without processing the bottom rail.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, this invention has a ridge on each of the lower side surfaces of the bottom rail of the blind in the front-rear direction, and the bottom rail is inserted on the lowermost weft thread of the ladder cord. In the blind in which the lower end of the ladder cord is sandwiched and fixed between the stopper fitted to the protrusion and the bottom rail lower surface, both ends of the stopper are fixed to the protrusion of the bottom rail. Locking ridges are provided that are pressed into contact with both ends of the bottom rail in the front-rear direction in the fitted state.

[0007]

[Action]

 When both ends of the stopper are fitted to the protrusions of the bottom rail by the above means, the locking protrusions of the stopper are pressed against the bottom surface of the bottom rail to increase the friction between the stopper and the bottom rail.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. The same components as those of the conventional example will be described with the same reference numerals. The stopper 11 shown in FIG. 1 is made of synthetic resin and curved so as to follow the lower surface of the bottom rail 1 shown in FIG. 2, and both ends thereof are fitted with protrusions 12 provided on the lower side surface of the bottom rail 1. Fitting portions 13 are formed so as to be opposed to each other so that they can be fitted together. A notch 14 for inserting the ladder cord 2 is formed in the center of the fitting portion 13.

On the upper surface of the stopper 11, a locking projection 15 having a triangular cross section is formed in the vicinity of the both fitting portions 13 in a direction along the fitting portions 13. Then, as shown in FIG. 2, when both fitting portions 13 of the stopper 11 are fitted to the protrusions 12 of the bottom rail 1, the locking protrusions 15 are pressed against the bottom surface of the bottom rail 1. There is.

Now, in order to fix the lower end of the ladder cord 2 to the bottom rail 1 at a position where the lifting cord is not attached to the bottom rail 1 as shown in FIG. As shown in FIG. 2, the bottom rail 1 is inserted onto the lowermost weft thread 3a of the ladder cord 2, and the warp thread 3a is covered and the warp thread 3b is inserted into the notch 14, and the stopper 11 is attached to the lower surface of the bottom rail 1. , The lower end of the warp thread 3b and the weft thread 3a are fixed to the bottom rail 1. When the fitting portion 13 of the stopper 11 is fitted to the protrusion 12 of the bottom rail 1, the stopper protrusion 15 is pressed against both ends of the bottom surface of the bottom rail 1 in the front-rear direction. The friction with the bottom rail 1 can be increased to prevent the stopper 11 from slipping sideways with respect to the bottom rail 1.

Further, when the lower end of the ladder cord 2 is fixed to the bottom rail 1 at the position where the lifting cord 7 is attached to the bottom rail 1 as shown in FIG. When 11 is fitted, the warp thread 3b and the weft thread 3a at the lower end of the ladder cord 2 are fixed to the bottom rail 1. At this time, even if the periphery of the through hole 6 is recessed due to the processing of the through hole 6 for attaching the elevating cord 7, the locking protrusion 15 of the stopper 11 is located on the lower surface of the bottom rail 1. Since it is pressed against both ends in the direction, there is no effect and it is possible to secure the friction between the stopper 11 and the bottom rail 1 and prevent the stopper 11 from slipping laterally with respect to the bottom rail 1.

Therefore, according to this stopper 11, it is not necessary to provide the through hole 6 in the bottom rail 1 at the position where the elevating cord 7 is not attached, and the shape of the through hole 6 formed at the position where the elevating cord 7 is attached is used. Regardless, the stopper 11 can be securely fixed to the bottom rail 1.

The stopper 11 and the double-sided tape may be used together to prevent lateral displacement. Further, the locking projection 15 may have a trapezoidal cross section to increase the contact area with the bottom rail 1.

[0014]

[Effect of the device]

 As described in detail above, the present invention exhibits an excellent effect of preventing lateral displacement of the ladder cord stopper with respect to the bottom rail without processing the bottom rail.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a stopper embodying the present invention.

FIG. 2 is a cross-sectional view showing a state in which the stopper of one embodiment is attached to a bottom rail.

FIG. 3 is a cross-sectional view showing a state where the stopper of one embodiment is attached to the bottom rail.

FIG. 4 is a cross-sectional view showing a conventional example.

[Explanation of symbols]

 1 Bottom rail 2 Ladder cord 3a Weft 11 Stopper 15 Locking protrusion

Claims (1)

[Claims for utility model registration] [Claim 1] Protruding ridges (12) are provided at lower portions of both side surfaces of the blind bottom rail (1) in the front-rear direction, and the bottom rail (1) is attached to the ladder cord (2). The rudder cord (2) is inserted between the stopper (11) which is inserted through the lowermost weft thread (3a) and fits into the protrusion (12) from below the weft thread (3a) and the bottom surface of the bottom rail (1). ) In a blind whose bottom end is clamped and fixed, both ends of the stopper (11) are fitted to the ridges (12) of the bottom rail (1). A blind rudder cord stopper characterized in that locking projections (15) that are pressed against both ends of the bottom surface of the bottom rail (1) in the front-rear direction are provided.