Pre-adjustment of the play of a horological wheel

摘要

The sub-assembly (10) has a drive unit (5) secured to a wheel set (3) and arranged to slide with respect to a spacer (2). The drive unit sets axial shake (E) between a stop position between a collar (31) of the wheel set and a front end face (24) of the spacer, and another stop position between a stop surface (51) of the drive unit and a rear end face (25) of the spacer. The wheel set includes a machined portion (37) that is arranged to cooperate with a complementary machined portion (61) comprising a display element (6) to fixedly secure a display element in the wheel set. Independent claims are also included for the following: (1) a timepiece movement (2) a method for assembling a timepiece sub-assembly on a bottom plate.