| 摘要 |
PROBLEM TO BE SOLVED: To provide a sheet fixing device preventing beforehand a coil spring and a sheet from jumping out from a support frame even if tension force caused by a strong wind and an earthquake acts on a sheet which is spread on a plastic greenhouse. SOLUTION: This sheet fixing device has a support frame 1, and a coil spring 2 which is separatably engaged with the support frame 1. The support frame 1 has one or a plurality of grooves (A) which have a V shape cross section, and a pair of seizing parts 6 and 7 which extend from the upper end of the groove (A) to the inside. A width of an opening B as an interval between a pair of the seizing parts 6 and 7 is made smaller than an external diameter of the coil spring 2, and a sheet S which is fitted into the groove (A) together with the coil spring 2 is sandwiched between the lower surface of a pair of the seizing parts 6 and 7 and the periphery of the coil spring 2. COPYRIGHT: (C)2009,JPO&INPIT
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