JPH0893357A - Joint code device for blinds - Google Patents

Abstract

(57) [Abstract] [Purpose] There is a Venetian blind that connects the end of the lifting cord to the bottom rail via the joint cord to prevent entanglement due to slack in the lifting cord and contamination due to sagging of the joint cord. . [Structure] Each lifting cord 14 ends with a joint cord device
The joint cord device (20) is bundled together, and the joint cord device (20) is provided with a drum for winding the joint cord (15) manually or by a spring, and the end of the joint cord (15) wound on the drum is connected to the bottom rail (16).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a joint cord for connecting an end portion of a blind lifting cord and a bottom rail.

[0002]

2. Description of the Related Art It is well known that the end of a lifting cord of a Venetian blind is connected to a bottom rail, and conventionally, the ends of two or three lifting cords are integrated into a common knob, and one of the knobs is used. One end of the joint cord was fixed and the other end was fixed to a part of the bottom rail.

[0003]

In the conventional method, since the lifting cord and the joint cord always slack, the lifting cords are easily entangled with each other. In particular, when the elevating cord is passed through the hollow operating rod suspended from the head box, there is a problem that the operation of the elevating cord becomes unsuccessful if the elevating cords are entangled with each other. Also, if you lengthen the joint cord,
Since the lifting cord can be pulled diagonally, the operation of the blind is easy, but there is a problem that the long joint cord leans on the floor and is easily soiled.

The present invention has been made to solve these problems, and its object is to prevent the lifting cords from being entangled with each other and to improve the operability of the blind. This is to prevent the joint cord from becoming dirty.

[0005]

In order to achieve the above object, the means adopted by the present invention is a joint cord device in which a joint cord winding / unwinding means is provided in a knob for gathering the ends of the lifting cord. The winding and unwinding means can be integrated with the knob, or can be a separate body that can be attached to and detached from the knob. The winding / unwinding means may be of a type in which the joint cord is manually wound or unwound, or in which the joint cord is automatically wound by a spring and the joint cord is pulled out by hand.

[0006]

When the joint cord is wound manually or by a spring, tension is applied to the lifting cord, and the lifting cord can be prevented from being entangled. Therefore, there is no possibility that the operation of the lifting cord is hindered by the entanglement of the lifting cord. Also, since the joint cord is always rolled up when not operated, there is no possibility that it will hang down and become dirty. If the joint cord is unrolled and the joint cord is lengthened, the raising / lowering cord or the hollow operation rod can be operated at an angle, so blind operation becomes very easy.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The apparatus of the present invention will be described based on the embodiments shown in the drawings. As shown in FIG. 1, from the head box 10 of the Venetian blind, the hollow operation rod 11 is a hollow universal joint.
It hangs freely via 13. The ends of the two or three lifting cords 14 pulled out from the grip 12 provided at the lower end of the operating rod 11 are gathered in the joint cord device 20. The end of one joint cord 15 pulled out from the lower surface of the joint cord device 20 is fixed to a part of the bottom rail 16, for example, an end cap 17.

As shown in FIGS. 2 and 3, the joint cord device 20 includes a case 21 and a drum housed in the case 21.
Consists of 22. The ends of the elevating cords 14 are put into the inside through the cord holes 23 in the upper part of the case 21 and bound, whereby the ends of the elevating cords 14 are gathered and fixed to the case 21. Drum 22
The end of the joint cord 15 wound around is pulled out from the cord hole 24 at the bottom of the case 21. The axis of the drum 22 is orthogonal to the axes of the code holes 23 and 24. The drum 22 is fitted from one side wall 25 of the case 21 in its axial direction, and has a small diameter tip shaft.
27 is supported by the other side wall 26 of the case 21. Drum 22
The root shaft 28 of the has a large diameter and is rotatably fitted in the drum hole 29 of the one side wall 25. An operation groove 31 is provided on the outer end surface of the base shaft 28 of the drum 22 so that the drum 22 can be easily rotated by a driver or the like. The arrow on the outer end surface indicates the winding direction of the joint cord 15.

As shown in FIG. 4, a spring shaft 32 is fixed to the case 21 coaxially with the drum 22, and a spiral spring 30 is interposed between the drum 22 and the spring shaft 31 to keep the joint cord 15 in the drum 22 at all times. May be involved in. When the lifting cord 14 is not operated, the joint cord 16 is wound around the joint cord device 20 manually or by the repulsive force of the spring,
By eliminating the slack of the lifting cord 14, it is possible to prevent both the entanglement due to the slack of the lifting cord and the dirt due to the sagging of the joint cord 15. When operating the elevating cord 14 or the hollow operating rod 11, pull out the joint cord 15 from the joint cord device by hand to allow a sufficient length, and operate the elevating cord 14 or the hollow operating rod diagonally. You can

[0010]

As described above, the device of the present invention can prevent the slack of the elevating cord and the sagging of the joint cord by regulating the slack of the elevating cord by winding the joint cord connecting the elevating cord to the bottom rail. Unlike the above, it has an excellent effect that both the entanglement of the lifting cord and the dirt of the joint cord can be prevented.

[Brief description of drawings]

FIG. 1 is a front view showing a main part of a Venetian blind equipped with an apparatus according to an embodiment of the present invention,

2 is a side sectional view of the joint cord device of FIG.

3 is a front view of the joint cord device of FIG. 1,

FIG. 4 is a view corresponding to FIG. 2 of another embodiment,

[Explanation of symbols]

10: Head box, 11: Control rod, 12: Grip, 13:
Universal joint, 14: Lift code, 15: Joint code, 1
6: Bottom rail, 17: End cap, 20: Joint cord device, 21: Case, 22: Drum, 23, 24: Code hole, 25, 26: Side wall, 27: Tip shaft, 28: Root shaft, 29: Drum Hole, 30: spiral spring, 31: operating rod, 32: spring shaft

Claims (3)

[Claims] 1. A case (21) connectable to an end of each elevating cord (14), a drum (22) rotatably mounted in the case, a start end fixed to the drum, and a bottom rail (16). ) And a joint cord (15) whose end is connected to
A blind joint code device comprising: driving means (30, 31) for rotating the drum to wind the joint code. 2. An outer end surface of a root shaft (28) of a drum (22) is exposed on a side surface of a case (21), an operation groove (31) is provided on an outer end surface of the root shaft, and the operation groove is operated. 2. The drum is rotated to rotate the drum.
The blind joint cord device described. 3. A spiral spring (30) is interposed between the case (21) and the drum (22) to rotate the drum (22) by its elastic repulsive force. The blind joint cord device according to 1.