主权项 |
1. A coupling part structure for a vane made of a composite material of thermosetting resin or thermoplastic resin and reinforcement fiber, the coupling part structure comprising a vane coupling part, wherein
the vane coupling part includes a coupling support member placed therein, the coupling support member being made of metal and including a pair of divided pieces separated from each other, the pair of divided pieces being joined to an end portion of the vane from both sides in a vane thickness direction, at least one linear protrusion or groove is formed on at least any one of divided piece sides of the end portion of the vane, a groove or linear protrusion engaged with the linear protrusion or groove formed in the end portion of the vane is formed in at least any one of the pair of divided pieces of the coupling support member, side edges that are located on a vane center side of the pair of divided pieces of the coupling support member and extend along a chord direction are formed so as to protrude toward the vane center, respective tip ends of the protruding side edges are chamfered or rounded, and the end portion of the vane is held between the pair of divided pieces of the coupling support member, by fastening force that is applied to the pair of divided pieces of the coupling support member from both the sides in the vane thickness direction. |