UNITARY STATOR FOR A STEPPING MOTOR FOR WATCHES

摘要

1. One-piece stator for a timepiece stepping motor comprising an elongated plate (1; 9; 13; 16; 20) of a ferromagnetic material having a central aperture (2; 8; 14; 17; 21) for the rotor (43) of the motor, this aperture being bordered by two solid polar zones (1a; 9a; 20a) and by two narrow connecting zones (1b; 9b; 13b; 16b; 20b), characterized in that the plate (1; 9; 13; 16; 20) is in one piece made of a single material and in that, in order to obtain a maximum ration between the moment of resistance and the cross-section, the connecting zones (1b; 9b; 13b; 16b; 20b) each have a machined hollow (7; 12; 15; 19; 22) in their thickness.