| 摘要 |
<p>PURPOSE:To obtain a gearing having no restriction in its assembly, removal order wherein phase adjustment of the tooth of respective gears is simple by providing a notch part for removal of a second gear at one part of the intermittent gear of a first gear having the intermittent gear at the upper part and a pinion at the lower part. CONSTITUTION:A gearing is comprised of a combined gear (first gear) 10 having an intermittent gear 11 at the upper part and a pinion 12 whose diameter is smaller than the intermittent gear 11 at the lower part, a spur gear (second gear) 20 that engages with the pinion 12 of the combined gear 10, and a driving gear 30 that engages with the intermittent gear 11 of the combined gear 10. Here, a notch part 11c in the form of tooth profile adjusted to the tooth profile shape of the tooth part 21 of the spur gear 20 for removal of the spur gear is formed at one part 11b at the opposite side of the tooth part 11a of the intermittent gear 11 of the combined gear 10. Thus, restriction is liquidated from the assembly order of the combined gear 10 and the spur gear 20, and assembly performance and maintainability can be enhanced.</p> |
