Two-directional date corrector mechanism for a date mechanism, date mechanism, timepiece

摘要

A two-directional date corrector mechanism controlled by a pull-out piece for a date mechanism. The mechanism includes a 24 hour wheel, a date updating finger pivoting integrally therewith, a date driving star-wheel, and a corrector star-wheel meshing therewith and located between the date driving star-wheel and the finger and configured to be uncouplable from the finger under action of an uncoupling mechanism controlled by the pull-out piece, the uncoupling mechanism having a coupling position where the corrector star-wheel meshes with the finger, and an uncoupling position where it is released from the finger to allow the date to be corrected. A date mechanism can include such a date corrector mechanism and a timepiece can include such a date corrector mechanism.

主权项

1. A date mechanism of a timepiece including a two-directional date corrector mechanism controlled by an actuating pull-out piece pivotally mounted about a first pivot axis, for a date mechanism of a timepiece, said date mechanism comprising:
a twenty-four hour wheel driven by a movement of said timepiece; a date updating finger mounted to pivot integrally with said twenty-four hour wheel about a second pivot axis; a date driving star-wheel; a corrector star-wheel pivotally moveable about a third pivot axis and located between said finger and said date driving star-wheel, wherein said corrector star-wheel is permanently meshed with said date driving star-wheel, and wherein said corrector star-wheel is arranged to be uncoupleable from said finger under an action of an uncoupling mechanism controlled by said pull-out piece; and said uncoupling mechanism having at least two positions including at least a first coupling position in which said corrector star-wheel is arranged to mesh with said finger, and at least a second uncoupling position in which said corrector star-wheel is released from said finger to enable a date to be corrected by pivoting of said corrector star-wheel causing said date star-wheel to pivot, wherein said uncoupling mechanism includes a mechanism of relative movement of said third pivot axis of said corrector star-wheel relative to said second pivot axis of said finger, to move at least one of said second or third axes, wherein said mechanism of relative movement includes a mechanism to transform a one-directional motion applied to said actuating pull-out piece into two pivoting movements in opposite directions of a first lever pivotally mounted relative to a fourth pivot axis, said first lever including a first abutment structure arranged to directly or indirectly control the relative movement of said third pivot axis of said corrector star-wheel relative to said second pivot axis of said finger, and wherein the date mechanism includes only two layers:
an under layer including the twenty-four hour wheel and at least a part of the pull-out piece, andan upper layer including the finger, the corrector star-wheel, and the date driving star-wheel.