JP2010031624A - Method for opening/closing film - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for opening/closing a film wherein the film can easily be spread without depending on gravity. <P>SOLUTION: (1) When closing the film, a taking-up rod 2 in the center is rotated, so that the film at both sides of the rod 2 are taken up simultaneously and the film is taken up close to a fixed end. In this case, a rod 3 also moves close to the fixed end, a string 4 of so much length has to be taken up around the rod 5 in advance. (2) When opening the film, by rotating the rod 5 the string 4 is taken up by the rod 5 for pulling the rod 3, so that the film is opened. In this case, the rod 2, while rotating, moves near the fixed end back again to the center of the film. (3) In addition, since gravity is not required for opening/closing the film, the film can be spread in the horizontal direction and in the direction against gravity, and thus can be spread in a various way with a simple structure. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

Detailed Description of the Invention

Industrial application fields

  The present invention relates to opening and closing a film for keeping warm in a greenhouse or the like. In recent years, the prevention of global warming has been screamed, and in greenhouses, etc., it has become necessary to save energy by multilayering films. However, the current situation is that it is difficult to improve the conventional multilayering of films, which requires equipment costs. . Therefore, by developing a simple film opening and closing method, it becomes easy to spread a multilayer film, and energy saving in a greenhouse is achieved, which contributes to improvement of the environment.

Conventionally, for easy opening and closing of a film in a greenhouse or the like, the winding rod 2 is attached to the end of the film 1 as shown in FIG. 1, and the film is opened and closed by rotating it.
However, since this method uses gravity, it cannot be used to open and close a horizontally stretched film. In that case, the film is connected to a string at multiple locations to stretch and shrink the wrinkle of the film. However, the current situation is that the equipment is complicated and expensive equipment costs are required, and the spread is not progressing.

Problems to be solved by the invention

  Because of this situation, there has been a strong demand for a simple film spreading method that does not rely on gravity.

Means for solving the problem

Now, the configuration will be described with reference to FIG.
(A) A winding rod 2 is attached to the central portion of the film 1, one end of the film is fixed, and a rod 3 is attached to the other end. A pull string 4 is attached to the bar 3, and the string 4 is attached to a winding bar 5.
(B) When closing the film, by rotating the winding rod 2 in the center, the left and right films of the rod 2 are simultaneously wound, and the film is wound near the fixed end. In this case, since the bar 3 also moves to near the fixed end of the film, it is necessary to wind the string 4 around the bar 5 in advance.
(C) When opening the film, the string 4 is wound around the bar 5 by rotating the bar 5, the bar 3 is pulled, and the film is opened. In this case, the rod 2 moves from the vicinity of the fixed end to the original film center while rotating.
(D) Since gravity is not required to open and close the film, it is possible to stretch the film in the horizontal direction or in the direction against the gravity, and various structures can be stretched with a simple structure.
The apparatus is as described above.

Action

Next, the operation of the present invention will be described.
It is a well-known fact that multi-layered films are effective for keeping warm at night in a greenhouse or the like, and it is important to promote multi-layered films with minimal cost. In the present invention, as shown in FIG. 2, when a winding rod 2 is attached to the center of the film and the film is closed, the film is wound up by rotating it. At this time, the rod 3 moves without rotating. On the other hand, when the film 4 is opened and the string 4 is wound up by the stick 5, the stick 3 to which the film is attached spreads without rotating. As a result, the film can be opened and closed without depending on gravity, and the film can be easily stretched in a direction opposite to the horizontal or inclined direction or in an arc shape.

Experimental example

  The experiment was conducted when the film was installed horizontally, but the film could be opened and closed smoothly with almost no resistance. Moreover, although the stick | rod 3 moved horizontally, the damage of the film by slip, etc. were not confirmed.

The invention's effect

  The impact of global warming has a serious impact on the global environment, and the need for energy conservation is expected to become increasingly important in the future. The heat insulation technology by multilayering of the film is a basic technology for energy saving, and the fact that various multilayers can be easily realized by the present invention meets the social demand.

  Conventional simple film opening and closing method   Film opening and closing method according to the present invention

Explanation of symbols

1 is film 2 is film take-up rod 3 is slide rod 4 is string 5 is string take-up rod

Claims (1)

  As shown in FIG. 2, the film 1 is closed by rotating the stick 2 attached to the center of the film 1, and attached to the end of the film 1 connected by the string 4 by rotating the stick 5. Method for opening film 1 by pulling rod 3 and film opening / closing device using this method

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