| 摘要 |
A miniature indexing mechanism employs a shaft of a first diameter having a drum of a second diameter, the second diameter being larger than the first. Two holes are located diametrically opposite each other in the walls of the drum. A hat shaped housing member includes a plurality of smaller holes circumferentially located along the inner wall thereof and has an internal diameter slightly larger than the drum section of the shaft such that the drum section is free to rotate within the wall of the housing member. Ball bearings are inserted in each of the two drum holes and are biased outwardly toward the inner walls of the housing member by a circular leaf spring. As the shaft is rotated, the bearings seat in the holes along the inner walls of the housing thus providing an indexing mechanism.
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