| 摘要 |
An interlocking mechanism for preventing the double meshing of a transmission, which is constituted by using a rotary lock drum to produce a reliable locking action and can be excellently adapted to various transmissions. In the interlocking mechanism, fork-operation members and fork-fixing members LP1 to LP4 are coupled to a plurality of forks for changing the gears, and are fitted to a plurality of lock drum grooves of a lock drum LD that is rotatably supported. The lock drum grooves are forming narrow portions with their width being nearly equal to that of the fork-fixing members and wide portions wider than the fork-fixing members in a manner that the fork-fixing members positioned at the narrow portions are shifted depending upon the rotation of the lock drum LD. The lock drum LD is rotated by a select motor 7 in synchronism with a shift drum 4, permits the motions of the fork operation members at the wide portions as they are shifted by the reciprocal motion of the shift drum 4 but locks the motions of the other fork operation members by the fork-fixing members at the narrow portions.
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