| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a winding drum for a long article capable of ensuring necessary strength and reducing cost. <P>SOLUTION: A flange part 20 is formed with a plurality of inner members 21, 22, 23 radially extending toward respective angular parts of an outer peripheral part 20a from a core part 10 and a plurality of outer members 24 forming the respective sides of the outer peripheral part 20a; grounding parts 30 for receiving reaction force from a grounding surface A are formed at the angular parts, out of the respective angular parts of the outer peripheral part 20a, connected with the pair of inner members 21 extending to both ends of the lower side of the outer peripheral part 20a; the pair of inner members 21 receiving a load in grounding out of the respective inner members 21, 22, 23 are formed with a member high in strength relative to the other inner members 23; and thereby a member high in strength is not used for the inner members 23 without contributing to the strength of the flange part 20, and material usage of the flange part 20 can be reduced accordingly. <P>COPYRIGHT: (C)2012,JPO&INPIT |
