| 摘要 |
A flexible tape drive system of the type having a flexible yet relatively longitudinally rigid perforated drive tape which is reciprocated by a toothed cog drive arrangement to provide both push and pull driving power. The drive system includes a substantially circular cog wheel having an outer base surface of a predetermined diameter and a plurality of radially extending cog teeth spaced about the periphery of the outer base surface. A cog wheel surround includes an outer guide track having an inner cog race with an inner surface of a diameter slightly larger than the base diameter of the cog and spaced substantially parallel therewith. A pair of oppositely disposed peeler tips are situated adjacent the top of the cog wheel surround between the outer guide track and the cog wheel, each including a peeler edge which has an arcuate inner face extending from the edge at a non-parallel orientation relatively to the base surface of the cog. In this way, the peeler edge of each of the peeler tips is inwardly disposed toward the base surface to more effectively peel the drive tape away from the cog wheel even under conditions of high compression force on the flexible tape and/or at increased speeds of rotation. The inwardly disposed orientation can be accomplished by locating the peeler edges on a radius substantially equal to the radius of the outer base surface but having an offset point of origin, or by providing the peeler edges on a non-concentric and smaller radius.
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