| 摘要 |
<P>PROBLEM TO BE SOLVED: To wind or unwind a plurality of kinds of films having different functions with a simple structure, and to pull the films with a tension on some level without tightening by a mica wire. <P>SOLUTION: There is provided a movable winding shaft 20 which is movable accompanied by the winding or unwinding operation of the films 210 and 220 with adjacent portions of a first film 210 and a second film 220 wound together therearound. A base end portion of the second film 220 is pivotably supported by a bearing member 30a, and supported by a fixed winding shaft 30 which is not moved by the winding or unwinding operation of the films 210 and 220. The tension in each film can be increased by winding the second film 220 by a predetermined quantity by the fixed winding shaft 30 in an arbitrary state irrespective of each winding quantity of the first film 210 and the second film 220. <P>COPYRIGHT: (C)2004,JPO |
