| 摘要 |
A pivotal attaching structure and a pivotal attaching method, are provided, with which a rotary arm member can be rotatably supported in a retained state with no need to perform mechanical swaging. A pivotal attaching structure for relatively rotating members includes at least one intermediate arm member having a rotational center hole; a central-pivot providing member which includes a central-pivot portion that is inserted into the rotational center hole of the intermediate arm member to be freely rotatable relative to the rotational center hole and a retaining portion which is orthogonal to the central-pivot portion; and a retaining member which is fitted on the periphery of the central-pivot portion of the central-pivot providing member to prevent the intermediate arm member that is fitted on the central-pivot portion from moving in the axial direction between the retaining member and the retaining portion, the central-pivot portion of the central-pivot providing member and the retaining member are fixed to each other by laser welding. |
