Horological module actuatable at isolated moments, comprising automatic locking means

A horological module (1) for a horological movement, the horological module (1) comprising:

• a plate (2) and a mechanical device (10) able to pass from an idle state, wherein the mechanical device (10) is immobile with respect to the plate (2), to an operating state, wherein at least a part of the mechanical device (10) is able to move with respect to the plate (2) when it the mechanical device (10) is actuated;
• a barrel (3) for providing energy to the mechanical device (10), the mechanical device (10) including a geartrain (20) actuatable by the barrel (3), the mechanical device (10) furthermore comprising a regulator for regulating a speed of the mechanical device (10);
• and
• automatic locking means (30) for automatically locking the mechanical device (10), wherein the automatic locking means (30) are configured to lock the regulator in order to put the mechanical device (10) in the idle state,
• wherein the regulator comprises a regulation pinion (19) driven by the barrel (3) when the regulation pinion (19) is in rotation by means of the geartrain (20), the regulation pinion (19) being mounted secured to a regulation shaft (15), the automatic locking means (30) being configured to lock the regulation shaft (15) in order to put the mechanical device (10) in the idle state, and
• wherein the automatic locking means (30) comprise a brake lever (14) cooperating with the regulation shaft (15), the brake lever (14) being able to move about a second rotation pivot (22) between a contact position wherein the brake lever (14) is in contact with the regulation shaft (15) to lock the regulation shaft (15) and a position distant from the regulation shaft (15) wherein the brake lever (14) allows the regulation shaft (15) to turn.