JP3841192B2 - Connecting mechanism of lifting cord to winding drum - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mechanism for connecting a lifting / lowering cord to a winding drum of a lifting / lowering cord winding device such as a raising curtain.
[0002]
[Prior art]
In a lifting curtain winding device for a hoisting curtain, a winding drum is provided with a flange, an axial insertion hole is formed in the flange, one end of the lifting cord is passed through the insertion hole, and a knot is provided at one end of the lifting cord. A mechanism for connecting the lifting / lowering cord to the winding drum is known from Japanese Utility Model Publication 5-9889.
[0003]
[Problems to be solved by the invention]
When cleaning the screen of the curtain, the screen is removed from the head rail, cleaned, and attached to the head rail again. At this time, it is difficult for the known mechanism to break the knot at the end of the lifting / lowering cord that has passed through the insertion hole of the flange of the winding drum in the head rail, that is, the connection between the lifting and lowering cord and the winding drum is difficult. Since it was not easy to release, the screen had to be removed leaving the lifting cord on the head rail side. For this reason, when removing the screen, it was necessary to remove the lifting cord from each of the many rings provided on the screen, and to pass the lifting cord through each of the rings when reattaching the screen. Passing the lifting / lowering cord through a large number of rings one by one was a very troublesome and troublesome operation.
[0004]
An object of the present invention is to solve this problem. The object of the present invention is to allow the screen to be detached from the head rail while the lifting cord is attached to the screen, that is, the lifting cord is attached to the head rail. It is an object of the present invention to provide a connecting mechanism for a lifting / lowering cord and a winding drum that can be easily detached from and attached to the winding drum.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the means employed by the present invention is provided with a catch that integrally rotates on one side of the winding drum, and a clip attached to the tip of the lifting / lowering cord is slidably detached from the winding drum. The clip is held by the catch so as to be detachable and integrally rotated.
[0006]
A fitting portion that is externally fitted to the winding drum and a coupling portion that is coupled to the catch are formed on the clip, and a holding portion that holds the coupling portion so as to be detachable and integrally rotated is formed on the catch.
It is desirable that the tip of the lifting / lowering cord is detachably locked to the coupling portion of the clip, and the fitting portion of the clip is formed on, for example, a C-shaped hook and elastically fitted to the winding drum. For example, the coupling portion of the clip is preferably formed in a knob, and the holding portion of the catch is preferably formed in a slit into which the knob is fitted. The catch is preferably formed integrally with the flange on one side of the winding drum.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The mechanism of the present invention will be described based on an embodiment shown in the drawings.
As shown in FIG.1 and FIG.2, the flanges 2 and 3 are fixed to the both ends of the cylindrical winding drum 1 integrally or detachably. The flange 2 on one side is formed integrally with the catch 4. The catch 4 is a ring-shaped member having a slit 7 as a holding portion, and an annular space 14 is formed between the inner peripheral surface of the catch 4 and the winding surface 15 of the winding drum 1. The take-up drum 1 is fitted on the rotary shaft 9 so as to rotate integrally therewith and is accommodated in the drum case 11. The drum case 11 is fixed to the head rail 10 via a lock 17. The drum case 11 is provided with an inner peripheral surface 12 along the rotating outer peripheral surface of the catch 4. The inner peripheral surface 12 intersects the bottom hole 13 of the drum case 11. A knot 21 is formed at the tip of the lifting / lowering cord 20 that passes through the lifting / lowering cord hole 16 of the clip 5, and the clip 5 is locked to the tip of the lifting / lowering cord 20. The clip 5 is a synthetic resin molded article rich in elasticity, and has a C-shaped hook 8 as a fitting portion and a knob 6 as a coupling portion protruding outward from the center of the hook. The hook 8 is elastically opened and closed and is fitted on the winding drum 1. The clip 5 having the hook 8 fitted on the take-up drum 1 can be rotated or slid. The space 14 between the winding drum 1 and the catch 4 is formed so that the hook 8 of the clip 5 and the slit 7 of the catch 4 are fitted in the knob 6 of the clip 5, respectively. When the clip 5 is moved toward one side of the winding drum 1 by matching the angular directions, the clip 5 fits in the catch 4 and rotates together with the winding drum 1.
[0008]
The connection between the lifting / lowering cord 20 and the winding drum 1 passed through a number of rings on the screen (not shown) is as follows.
First, as shown by a chain line in FIG. 2, the clip 5 at the tip of the lifting / lowering cord 20 is passed through the bottom hole 13 of the drum case 11 from the opening of the head rail 10 and is elastically fitted to the central portion of the winding drum 1. Next, the rotating shaft 9 is turned so that the slit of the catch 4 is directed directly below. At this time, the knob of the clip 5 is also turned directly below. Then, as indicated by the arrow, the clip 5 is slid to fit into the catch 4 completely. Thus, the connection of the lifting / lowering cord 20 to the winding drum 1 is completed, and when the rotary shaft 9 is rotated, the lifting / lowering cord 20 is wound around the winding drum 1 and the screen (not shown) rises.
[0009]
When the lifting / lowering cord 20 is removed from the winding drum 1, the rotating shaft 9 is reversed to lower the screen (not shown) and the slit of the catch 4 is directed right below. Then, the clip 5 is slid to the center of the winding drum 1 to remove the clip 5 from the catch 4. Next, when the lifting / lowering cord 20 is pulled slightly downward, the clip 5 is detached from the winding drum 1, and the lifting / lowering cord 20 is separated from the winding drum 1 together with a screen (not shown). In this manner, the lifting / lowering cord 20 can be easily attached to and detached from the winding drum 1.
[0010]
【The invention's effect】
As described above, the connecting mechanism of the present invention can remove the screen from the head rail together with the lifting / lowering cord, unlike the case where the screen cannot be removed from the head rail unless the lifting / lowering cord is removed from the screen ring. Therefore, when removing the screen from the head rail for washing or the like, there is an excellent effect that it is not necessary to pass the lifting / lowering cord through the ring of the screen.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a mechanism according to an embodiment of the present invention;
2 is a perspective view of a main part of a hoisting curtain provided with the mechanism of FIG. 1, and shows a state before the lifting / lowering cord is wound on a winding drum.
[Explanation of symbols]
1: Winding drum 2, 3: Flange 4: Catch 5: Clip 6: Knob (joint part)
7: Slit (holding part)
8: Hook (fitting part)
9: Rotating shaft 10: Head rail 11: Drum case 12: Inner peripheral surface 13: Bottom hole 14: Space 15: Winding surface 16: Lifting cord hole 17: Lock 20: Lifting cord 21: Knot

Claims (2)

A drum case (11) disposed in a head rail (10) having an open bottom surface, a take-up drum (1) rotatably accommodated in the drum case, and a tip are passed through the drum case. A lifting / lowering cord (20), a catch (4) provided so as to rotate integrally with one side of the winding drum, and attached to the tip of the lifting / lowering cord and detachably fitted to the winding drum. The catch is integrally provided with a holding portion (7), and the clip has a coupling portion (6) that is detachably coupled to the holding portion and integrally rotatable. A mechanism for connecting the lifting / lowering cord to the winding drum. The clip (5) includes a C-shaped hook (8) that is elastically fitted to the winding drum, and the coupling portion (6) is formed as a knob protruding from the hook, and the holding portion (7) 2. A mechanism for connecting a lifting / lowering cord to a winding drum according to claim 1, wherein the knob is formed as a slit through which the knob moves in and out in the axial direction.

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