| 摘要 |
PROBLEM TO BE SOLVED: To provide a one-way intermittent feeding unit in which a ratchet and a sprocket integrated with it are intermittently rotated by engaging a driving pawl of a rocking arm with the ratchet in which an one-way type torque limiter is assembled and reciprocatingly rocking the rocking arm, wherein the displacement in the rotation center of the ratchet occurs by the force exerted on the ratchet from the driving pawl so that the inconvenience of deteriorating feeding accuracy can be solved. SOLUTION: A pair of driving pawls 12a, 12b are provided to a rocking arm 2 at the central symmetric position of a ratchet 8. The driving forces F1, F1 in the same direction with the same size are simultaneously applied by respective driving pawls 12a, 12b. By so doing, the displacement forces F2, F2 acting on the rotation center of the ratchet 8 is offset so as to enhance the feeding accuracy. COPYRIGHT: (C)2007,JPO&INPIT
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