主权项 |
1. A timepiece movement including at least one structure carrying at least one wheel set, wherein the endshake of at least one wheel set is adjustable in relation to said at least one structure, along a pivot axis, either by means of a micrometric endshake adjustment device including at least one pivot bearing of said wheel set, said at least one bearing defining at least one axial stop member for said wheel set in said axial direction of said axis, said device including at least a first smooth adjustment stage of variable thickness in said axial direction, said first adjustment stage including, on the one hand, a first component provided with pivot drive means accessible for driving by a tool and carrying said bearing, and on the other hand, a second component onto which said first component is pushed by at least one elastic return means, said second component being fixed to said structure, either directly, or by means of at least one case, and wherein said elastic return means are supported on said structure, either directly, or via at least one case, or by means of a said equipped case including a said device, and including a said case which contains at least a first said adjustment stage and wherein said second component is fixed integral with said case, and wherein said elastic return means are supported inside said case, said movement) being wherein said at least one structure includes a counterbore for receiving at least one said first smooth adjustment stage, wherein said first component and said second component are guided in a bore of said counterbore, said second component being directly fixed to said structure, and said elastic return means being supported on the bottom of said counterbore. |