Coupling structure of driving force transmitting members

摘要

An object of the invention is to provide a coupling structure of driving force transmitting members, wherein the variety of complex-type driving force transmitting parts to be combined by using a plurality of driving force transmitting members can be increased as many as possible. Respective gear members (101-104) are provided with concave coupling portions (101a-104a) on one sides in the axial line direction and convex coupling portions (101b-104b) on the other sides in the axial line direction. The respective convex coupling portions (101b-104b) are fitted into the respective concave coupling portions (101a-104a), whereby the gear members (101-104) are coupled to integrally rotate. Thus, it is possible to selectively combine a plurality of gear members (101-104) and construct many kinds of complex-type gear members (500).