Drive wheel for integration into a timepiece movement

摘要

The present invention relates to a drive wheel (10) for integration into a clock movement, in particular into the clock movement of wristwatches, with at least a dented section (11) by whose teeth (12) a downstream wheel (20) is rotatably drivable and at least a non-dented section (13) which has a diameter chosen in such a manner that the part-circular circumference of the drive wheel (10) in the non-dented section (13) blocks the downstream wheel (20) against rotation while the teeth (21) of the downstream wheel (20) face this section. The non-dented section (13) of the drive wheel (10) comprises at least a flexible element (14) that is arranged, seen in the direction opposite to the direction of rotation of the drive wheel (10), immediately after the dented section (11) and that comprises an elasticity essentially directed in radial direction of the drive wheel (10) for the change of the diameter of the non-dented section (13) of the drive wheel (10) in the range of the flexible element (14).