Horological movement comprising a chronograph mechanism, in particular a jumping-second mechanism

A horological movement (1) comprising a running train (100) dedicated to the division of time of said horological movement (1), said running train (100) being driven by a first power source (150) and regulated by a regulating member (120);

• the horological movement (1) comprising a chronograph mechanism (10) comprising:
• a chronograph train (20) driven by a second power source (35);
• the chronograph train (20) comprising a chronograph counter (23) having a counter wheel (231) and a display (234) integral in rotation with the counter wheel (231);
• a chronograph start/stop control device (30) configured to couple on demand the chronograph train (20) to the regulating member (120), or to the running train (100), to regulate the chronograph train (20) from the regulating member (120);
• a reset mechanism (40) for resetting said chronograph counter (23), comprising a reset control (60) movable between a neutral rest position and a reset position;
• wherein the chronograph mechanism (10) comprises a lever (70), which is rotatable about an axis of rotation (76), configured to cooperate with the chronograph counter (23);
• said lever (70) being configured to be controlled by the chronograph start/stop control device (30) between a first stable position, referred to as the stop position, wherein the lever (70) blocks the rotation and maintains the position of the counter wheel (231), and a second stable position, referred to as the neutral position, wherein the counter wheel (231) is free to rotate;
• the reset control (60) being configured to cooperate, in the reset position, with the lever (70) to position the latter angularly in a third intermediate position wherein the lever (70) partially releases the counter wheel (231) so as to authorise rotation of the counter wheel (231) until it is positioned in a reset reference position, the counter wheel (231) being driven by the second power source driving the chronograph train.