HUB OF THE FLYWHEEL FOR ENERGY STORAGE

摘要

PURPOSE: A hub of a flywheel for storing energy is provided to prevent stress concentration by generating a slip between a tilted surface of a hub main body and a tilted surface of a hub wing. CONSTITUTION: A hub(100) includes a hub body(10) and a plurality of hub wings(20). The hub body includes an insertion hole and a plurality of grooves. A rotary shaft is inserted to the insertion hole. The grooves are formed with a fixed interval according to a columnar direction. The hub wings surround an outer surface of the hub body. A protrusion part of each hub wing is inserted to the groove of the hub body. The protrusion part has a floor surface, a pair of first side surfaces, a pair of tilted surfaces, and a pair of second side surfaces. A tapered surface is formed in the groove of the hub body.