Mechanical adjustment of the shake of a timepiece wheel set
AssigneeETA SA Manufacture Horlogere Suisse
InventorOlivier Mertenat
Life of this patent
Estimating the term…
Abstract
A timepiece movement for a watch, including a main plate and a bar holding a wheel set in a reference position, and a device to adjust the height of this bar in relation to the plate in the direction of the axis of rotation of the wheel set, at a first point remote from the reference position, and this height adjustment device includes a screw or a worm rotatably movable about an oblique control axis in relation to the axis of rotation, and a cone or a curved surface for transforming motion between this screw or worm and a pusher movable in a parallel direction to the axis of rotation.
Claims24
A timepiece movement, comprising:
- at least a main plate and a bar for holding a wheel set on both sides, a bottom pivot of which occupies a reference position on said plate;
- and
- means of adjusting the height of at least a first point of said bar in relation to said plate in the direction of the axis of rotation of said wheel set, said first point being, in projection onto a reference plane of said plate orthogonal to said axis of rotation of said wheel set, at a first non-zero distance from said reference position,
- wherein said height adjustment means includes control means rotatably movable about a control axis, the control axis being oblique or orthogonal relative to said axis of rotation of said wheel set, and said height adjustment means includes a means of transforming motion between said control means and a pusher movable in a parallel direction to said axis of rotation of said wheel set, said pusher being in abutment directly on a bottom surface of said bar, and
- wherein said control means is located at a periphery of said plate and is accessible after said movement is completely assembled.
A timepiece movement, comprising:
- at least a main plate and a bar for holding a wheel set on both sides, a bottom pivot of which occupies a reference position on said plate;
- and
- means of adjusting the height of at least a first point of said bar in relation to said plate in the direction of the axis of rotation of said wheel set, said first point being, in projection onto a reference plane of said plate orthogonal to said axis of rotation of said wheel set, at a first non-zero distance from said reference position,
- wherein said height adjustment means includes control means rotatably movable about a control axis, the control axis being oblique or orthogonal relative to said axis of rotation of said wheel set, and said height adjustment means includes a means of transforming motion between said control means and a pusher movable in a parallel direction to said axis of rotation of said wheel set, and
- wherein the movement includes a pivot screw cooperating with an internal thread of said plate along a rectilinear pivot axis substantially parallel to said axis of rotation of said wheel set, to allow an angular adjustment of said bar in relation to said plate about said rectilinear pivot axis, and for clamping said bar in abutment in a determined angular position on said plate, said internal thread being positioned at a third non-zero distance from said reference position.
Dependencies are inferred from the claim text.