| 摘要 |
PROBLEM TO BE SOLVED: To provide a large-sized shutter system vertically opening and closing a large opening part of a large shed for an airplane, a snow plow, etc., and of a warehouse for a major-scale distribution system or the like by which a need for an intermediate post is eliminated, and sufficient wind pressure resistance is assured though it is lightweight. SOLUTION: A shutter body 1 comprises upper shutter panels 11, 12, 13, and 14, first intermediate shutter panels 21, 22, 23, and 24, second intermediate shutter panels 31, 32, 33, and 34, and lower shutter panels 41, 42, 43, and 44. Each of the shutter panels 11-44 are connected to one another by lock pins, pivotal support pins, etc. in a vertically foldable manner. Supporting posts P1 and P2 are vertically erected on both sides of the shutter body 1, and are provided with guide grooves P1a and P2a. COPYRIGHT: (C)2009,JPO&INPIT
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