Device for maintaining or limiting the shake of a timepiece component

A device (100) for maintaining or limiting the shake, in at least one direction, of a timepiece component (30), said device comprising a stationary structure (20) arranged to abuttingly receive at least one surface of said component (30), and a rotary bolt (10), cooperating with said stationary structure (20), the rotary bolt (10) being rotatable about an axial direction (A) between a first angular position, referred to as the unlocking position, allowing said component (30) freedom of movement and a second angular position, referred to as the locking position, limiting the travel of said component (30) relative to the stationary structure (20) in said at least one direction, wherein said second angular position, referred to as the locking position, of the rotary bolt (10) is secured by resilient return means (3), and said device further comprises one of (A), (B), (C), and (D),

• wherein (A) and (B) comprise said boss (4) being carried by at least one spring arm which said resilient return means (3) comprise or which forms said resilient return means (3),
• wherein (A) further comprises said boss (4) carrying a pin arranged to follow said raised portion (25),
• wherein (B) further comprises said boss (4) comprising a hole (204) forming a gripping member (2) for handling by a horologist or by automated production means,
• wherein (C) comprises said second angular position, referred to as the locking position, of the rotary bolt (10) as a single position, and being defined and indexed by a raised portion (25) that said stationary structure (20) comprises, the raised portion (25) being arranged to cooperate with a boss (4) that said rotary bolt (10) comprises, the cooperation between the boss (4) and the raised portion (25) allowing a stable and secure position of the rotary bolt (10) to be defined in the absence of any action from a user on said rotary bolt (10), and said raised portion (25) comprises at least one projection (252) oriented towards an axis of rotation of said rotary bolt (10) and at least one cavity (251, 253) that is further away from the axis of rotation of said rotary bolt (10) than said projection (252), said cavity (251, 253) cooperating with said boss (4) to form a notch for stabilising said rotary bolt (10), and
• wherein (D) comprises said rotary bolt (10) comprising at least one gripping member (2) arranged to be handled by a horologist or an automated timepiece production means, to control a rotation of said rotary bolt (10) between the first angular position, referred to as the unlocking position, and the second angular position, referred to as the locking position, and to lock and/or unlock said component (30) positioned between said stationary structure (20) and said rotary bolt (10), and said gripping member (2) is separate from a boss (4) that said rotary bolt (10) comprises, said gripping member (2) being carried by an arm that is more rigid than said resilient return means (3).