JPH0317741Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a rope guide structure for a string-pulling electric curtain drive unit.

The string-pulling electric curtain drive unit plays an important role in opening and closing the curtain by pulling the string (rope) to the left or right. Once this drive unit breaks down, it becomes impossible to open and close the curtains, causing a major problem. Possible causes of failure include the rope getting tangled with the drive roller,
Examples include the rope becoming entangled in a pulley or the rope becoming detached from a guide roller. Furthermore, since ropes are used to open and close curtains and operate limiter switches, they generally stretch over time, causing the ropes to become slack and become tangled. To prevent this slack, various steps are taken to maintain the rope at a constant tension. However, it is currently difficult to maintain a constant tension at all times, so slack in the rope is unavoidable. Therefore, the present invention was arrived at as a result of various studies on how to prevent the rope from getting tangled in the drive section even if there is a small amount of slack in the rope.

The gist of this invention is that the drive roller,
two guide rollers disposed at a predetermined interval around the circumference of the drive roller and press the rope against the drive roller by a spring, and disposed above the drive roller and between the two guide rollers. A string-pulling electric motor, characterized by having a substantially triangular rope guide provided therein, and two pulleys arranged on both sides of the rope guide to hold and guide the rope guided from the two guide rollers. It is in the rope guide structure of the curtain drive section.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained in detail below using one embodiment shown in the drawings. Fig. 1 is a front view of a drive unit in which an embodiment of the rope guide structure of a string-pulling electric curtain drive unit according to the present invention is used; Fig. 2 is a right side view;
The figure is a plan view. 1 is a rope guide, 2 is a drive roller, 3 is a guide roller, 4 is a pulley, and 5 is a rope.

The rope guide 1 has a substantially triangular shape, and in one embodiment shown in the drawings it is an isosceles triangle. This rope guide 1 is located above the drive roller 2. Guide rollers 3 and pulleys 4 are arranged on both sides of the rope guide 1. The guide roller 3 is provided on both upper parts of the drive roller 2, and the pulley 4 is provided on the upper part of the guide roller 3. The rope 5 enters between the pulley 4 and the rope guide 1, passes between the guide roller 3 and the rope guide 1,
The rope 5 exits the drive after passing around the drive roller 2, again between the guide roller 3 and the rope guide 1, and between the pulley 4 and the rope guide 1. In this way, the rope guide 1 is surrounded by the drive roller 2, two guide rollers 3, 3, and two pulleys 4, 4, and the rope 5 is guided by these. ing. Since the drive roller 2 is made of rubber, the rope can smoothly open and close the curtain without slipping.

Since the present invention is constructed as described above, no matter which direction the rope 5 moves, it will not become entangled in the driving section.

Furthermore, in this embodiment, the guide roller 3 is a guide roller guide plate 7 which is pivoted on the shaft 6 of the pulley 4.
The rope 5 is connected to the drive roller 2 by a spring 8. in this way,
The guide roller 3 is biased by a spring,
Since the rope is pressed against the drive roller, the curtain can be opened and closed smoothly without the rope slipping.

Here, the rope guide 1 is formed into a substantially triangular shape. Since this is a simple shape, the rope 5 does not get tangled, and the rope can move smoothly. It is also easy to manufacture due to its simple shape.
It can be made cheaply.

The present invention is constructed as described above, and based on the construction, the rope does not become entangled with the drive roller, the rope does not become entangled with the pulley, and the rope does not come off from the guide roller, and operates well. Since this effect can be obtained, it is very effective in a string-pulling electric curtain drive unit.
More details are as follows. A rope 5 guided into the drive unit from the outside is positioned by the rope guide 1 and pulley 4 and guided between the drive roller 2 and the guide roller 3. Here, since the rope 5 is pressed against the drive roller 2 by the guide roller 3 biased by the spring 8, the rope 5 will not become entangled with the drive roller 2 or come off from the drive roller 2. . Furthermore, even if the rope 5 is slack, it is positioned between the drive roller 2 and the guide roller 3 after being positioned by the rope guide 1 and pulley 4 as described above, so that the rope 5 does not become entangled with the pulley 4 or will not come off from the guide roller 3. Further, even when the rope 5 exits the drive section via the drive roller 2, guide roller 3, and pulley 4, no entanglement occurs in the drive section in the same manner as described above. Therefore, no matter which direction the rope 5 moves, there is no entanglement in the drive section.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a front view of the drive unit in which an embodiment of the rope guide of the string-pulling electric curtain drive unit according to the present invention is used, and FIG. 2 is a right side view. FIG. 3 is a plan view. 1... Rope guide, 2... Drive roller, 3
... Guide roller, 4 ... Pulley, 5 ... Rope, 6 ... Shaft, 7 ... Guide roller guide plate, 8
……spring.

Claims (1)

[Scope of utility model registration request] A drive roller 2, two guide rollers 3, 3, which are arranged at a predetermined interval around the circumference of the drive roller 2 and press the rope 5 against the drive roller 2 by springs 8, 8, and a drive roller. 2 and the two guide rollers 3, 3
A substantially triangular rope guide 1 arranged between
and two pulleys 4, 4 arranged on both sides of the rope guide 1 to hold and guide the rope 5 guided from the two guide rollers 3, 3. Rope guide structure of drive part.