| 摘要 |
PROBLEM TO BE SOLVED: To provide an opening and closing tool of a tunnel house, enabling a film-hooking part to be easily kept horizontally, and enabling the opening and closing of the film to be carried out precisely. SOLUTION: The opening and closing tool has a rod-shaped film-hanging part 101, a rod-shaped hanging part 102 connectedly installed in one terminal of the film-hanging part 101, and extended in the direction crossing to the film-hanging part 101, and a ring-shaped string-passing part 107 installed in the tip of the hanging part 102. The length of the hanging part 102 is formed so as to be changeable by constituting the hanging part 102 of a large diameter part 103 and a small diameter part 104, and fastening and fixing them with a fixing means 108. The film-engaging part 101 can be kept in a horizontal or nearly horizontal state by changing the length of the hanging part 102 to change the hanging position. COPYRIGHT: (C)2005,JPO&NCIPI
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