| 摘要 |
PROBLEM TO BE SOLVED: To provide a lightweight and sturdy slat structure capable of preventing noise caused by friction sound generated when a shutter operates and noise generated by play due to wind pressure. SOLUTION: In this shutter connecting many slats by strip-like plate members continuously so as to bend freely, a connection structure of each slat is a fitting structure of a projecting connection part and a recessed connection part, the projecting connection part is a connection part like circular projection formed continuously in the longitudinal direction, and the recessed connection part is a connection part like circular channel in which the connection part like circular projection is fitted to constitute a coupling connection structure in which the projecting connection part and the recessed connection part are freely bent.
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