| 摘要 |
<p>A rim assembly includes a first rim on which a first reference surface is formed, a second rim on which a second reference surface is formed, a through-hole that extends to intersect the first reference surface of the first rim and into which an inserting part is inserted, pins erected on one of the first and second reference surfaces, protruding portions formed on the other of the first and second reference surfaces, first supporting members provided for the first reference surface, and second supporting members provided for the second reference surface. Groove portions with which the protruding portions are engaged are formed around the outer peripheral surfaces of the pins. The first and second supporting members come into contact with each other when the protruding portions are separated from the groove portions, and are separated from each other when the protruding portions are engaged to the groove portions.</p> |
