Lock system for turbine engine nacelle and nacelle including same

A lock system for a turbine engine nacelle having a first cowl and a second cowl, the lock system comprising:

• a support configured to be attached to the first cowl and supporting a hook referred to as the main hook;
• a three-point lock configured to be attached to the second cowl, comprising a support, a yoke secured to the support, and a three-point mechanism hingedly connected at a point of the support, the three-point mechanism being movable between a locked position, wherein the hook cooperates in a retaining manner with the yoke in a closed position of the first and second cowls, and an unlocked position, wherein the hook is disengaged from the yoke and permits opening of the first and second cowls;
• and
• an actuating handle for actuating the three-point mechanism between the locked and unlocked positions, the actuating handle having a first end connected to the three-point mechanism,
• wherein the actuating handle comprises a locking bush secured to a second end opposite the first end, the bush being mounted so as to pivot relative to the support of the three-point lock between a first end position when the three-point mechanism is in the locked position and a second end position when the three-point mechanism is in the unlocked position, and
• wherein the lock system comprises a blocking tool adapted to cooperate with the locking bush and configured to:
• maneuver the locking bush between a blocked position and an unblocked position when the locking bush is in its first end position;
• and
• prevent a maneuver of the actuating handle as long as the locking bush is in its blocked position.