Reinforcing structure for slide shutter

A reinforcing structure for a slide shutter comprising:

• a shutter curtain which is formed by connecting a plurality of vertically moving slats with each other,
• a pair of left and right guide rails for guiding the shutter curtain,
• a shutter case which is provided above the guide rails and which rolls up the shutter curtain and accommodates the shutter curtain therein,
• wherein the reinforcing structure includes a hollow long first reinforcing base material whose one end is rotatably mounted on an upper end of one of the pair of guide rails and whose other end is opened,
• a long first length-adjusting member which is inserted into the first reinforcing base material and which can extend from the first reinforcing base material and which is retractable therein,
• a hollow and long second reinforcing base member whose one end is rotatably mounted on an upper end of the other guide rail of the pair of guide rails and whose other end is opened,
• a long second length-adjusting member which is inserted into the second reinforcing base material and which can extend from and retract into the second reinforcing base material, and
• a connecting member which rotatably connects a tip end of the first length-adjusting member and a tip end of the second length-adjusting member with each other and which is attachable to and detachable from a lower end of the slat, and
• wherein the connecting member includes a fixing tool which can be fixed to a fixing hole formed in an installation surface of the slide shutter and which can be engaged with an engaging hole formed in the shutter case.