Patent ID: 7621834
Filing Date: 2009-11-24
Classification: B62M

Abstract:
1. A transmission mechanism for a manually powered vehicle, said transmission comprising: a one-way clutch and a crankshaft operatively coupled to the one-way clutch, a slide mechanism comprising an outer slide member coupled to an inner slide member so as to be integrally rotatable with the inner slide member and movable in an axial direction with respect to the inner slide member which, in turn, is integrally rotatable with the clutch outer body, whereby the one-way clutch only transmits torque, when the crankshaft rotates positively, to a second rotation member through the slide mechanism, wherein the inner slide member has an outer peripheral surface with a guide groove formed therein and extending parallel to an axial direction for guiding the outer slide member to be movable in the axial direction, the guide groove being formed to open to the axial direction at both ends thereof, the clutch outer body and the inner slide member being formed as separate members; and being operatively joined with each other by a coupling pin; wherein the clutch outer body has a clutch-side overlapping portion and the inner slide member has a slide-side overlapping portion, the clutch-side overlapping portion and the slide-side overlapping portion overlapping each other in the axial direction and configured such that a gap is formed therebetween in the area of the groove, wherein the clutch-side overlapping portion of the clutch outer body overlaps the guide groove in the axial direction, and restricts the outer slide member from moving axially, relative to the inner slide member, beyond a predetermined movement range.