Timepiece comprising an improved time-setting device
AssigneeMontres Breguet S.A.
InventorEric Goeller
Life of this patent
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Abstract
According to the invention, the time-setting device (18) of the timepiece includes a time-setting lever (62) which carries a coupling device (64) and the pivoting of which is controlled between an uncoupled position and a coupled position corresponding to the time-setting position of the winding stem (22). The coupling device (64) includes an exit pinion (78) which, in the coupled position, meshes with a minute wheel (16), and a plate (90) which is pivotably mounted on the time-setting lever (62) and which is provided with first and second reversion wheels (94, 96) of parallel axes (A8, A9) meshing with each other. An intermediate wheel (60), which is driven in rotation by the winding stem (22) in the time-setting position, meshes with the first reverser wheel (94).
Claims9
A timepiece, including:
- (a) a motion work which drives in rotation analog display means via a minute wheel;
- and
- (b) a time-setting device including a winding stem, which, when occupying a time-setting position controls the rotation of the minute wheel in order to carry out a time-setting operation,
- (c) wherein the time-setting device includes a time-setting lever that carries a coupling device, and pivoting of the coupling device is controlled by the winding stem between an uncoupled position and a coupled position corresponding to the time-setting position of the winding stem,
- (d) wherein the coupling device includes (i) an exit pinion which, in the coupled position, meshes with the minute wheel and (ii) a plate that is pivotably mounted on the time-setting lever and that is provided with first and second reverser wheels of parallel axes meshing with each other,
- (e) wherein an intermediate wheel, which is driven in rotation by the winding stem in the time-setting position, meshes with the first reverser wheel, and
- (f) wherein, in the coupled position,
- (i) in a first direction of rotation of the winding stem, the plate occupies a first angular position in which the first reverser wheel meshes with a toothing arranged on an arbor of the exit pinion such that the minute wheel is driven in rotation in a determined direction of rotation called a time-setting direction, and
- (ii) in a second direction of rotation of the winding stem, the plate occupies a second angular position in which the second reverser wheel meshes with the toothing arranged on the arbor of the exit pinion such that the minute wheel is driven in the time-setting direction.
Dependencies are inferred from the claim text.