| 摘要 |
PURPOSE: A guide apparatus for an opening and closing switch of plastic greenhouse is provided to smoothly move in a curved section or a folded section as well as a straight section of a plastic greenhouse frame. CONSTITUTION: A first guide bar(10) is combined to an opening and closing switch(2). A second guide bar(20) is connected pivotally with an intermediation of a hinge shaft(30) on one end of the first guide bar, and has a second axis(21) moving along a frame in the state of contacting to the frame of a plastic greenhouse on the other end. On at least one of the second axis and the hinge shaft, a roller(32) rolling along the frame in contact with the frame is installed in a freely rotatable manner. In the outer periphery of the roller, the central part is a concave groove shape. A first axis(11), the hinge shaft and the second axis move in contact with the side of the frame in zigzag each other. |
