| 摘要 |
PROBLEM TO BE SOLVED: To provide an assembly structure without a coupling element for coupling or an assembly element such as a variable element, thereby reducing its manufacturing costs and improving its visibility and strength.SOLUTION: The assembly structure has two cylindrical parts 11, 12 whose outer peripheries have the same diameter. The two cylindrical parts 11, 12 are connected to each other by a pair of connection parts 15, 16. On top surfaces 11A, 12A of the two cylindrical parts 11, 12 are provided three cylindrical convex parts 25. Both ends of inner diameter surfaces 15A, 16A of the connection parts 15, 16 are connected smoothly to the outer peripheral surfaces of the two cylindrical part 11, 12 so as to extend along upper portions of the outer peripheral surfaces of the two cylindrical parts 11, 12.SELECTED DRAWING: Figure 1 |
