Assembly for holding or supporting timekeeper hairspring, timekeeper escapement mechanism, timekeeper movement, and timekeeper

The utility model relates to an assembly for holding or supporting a timekeeper hairspring (21), a timekeeper escapement mechanism, a timekeeper movement, and a timekeeper. The assembly comprises a hairspring outer pile (1) and an outer pile holding element (2). The outer pile holding element includes a fixing device (6) for fixing the outer pile holding element at the escapement mechanism (30). The outer pile includes a lateral support surface (7) that can limit the direction of holding or supporting the hairspring. The outer pile holding element (2) is divided into two parts and includes a rigid structure (5) for bearing the fixing device (6) and a belt type spring (8); the belt type spring pressed against the rigid structure (5) contains at least one elastic lip sheet (9); the elastic lip sheet and the rigid structure (5) limit a cavity (10) for accommodating the outer pile (1) jointly; and the elastic lip sheet cooperates with the lateral support surface (7) of the outer pile (1) to hold the outer pile (1) at a calibrated locking position.