Locking mechanism for at least one movable element situated in a first zone and comprising a component that can be adjusted from a second zone, and aircraft comprising at least one such locking mechanism

A locking mechanism, comprising:

• first and second parts and configured to occupy a locked state in which the first and second parts are kept close to one another by a hook and an anchoring point, and an unlocked state in which the first and second parts are configured to be separated from one another in a longitudinal direction,
• the first part being configured to be fixed onto a first element comprising a wall separating a first zone and a second zone, the first part being situated in the first zone and comprising a first support fixed against the wall in operation,
• the first part comprising at least one adjustable component having a positioning that is configured to be adjusted in the longitudinal direction and that is linked to the first support by a link comprising a rod which comprises a first segment secured to the at least one adjustable component;
• wherein the link comprises:
• a guideway link configured to allow at least the first segment of the rod to be translated with respect to the first support in the longitudinal direction, and
• an adjustment system comprising:
• a pivoting control configured to pivot, passing through the wall and having a first end accessible from the second zone in operation;
• an intermediate piece configured to pivot,
• an angle transmission configured to convert a pivoting movement of the pivoting control into a pivoting movement of the intermediate piece,
• a helical link configured to convert the pivoting movement of the intermediate piece into a translational movement of at least the first segment of the rod, and
• an anti-return system configured to block rotation of the pivoting control in at least one direction of rotation, wherein the anti-return system comprises a ratchet wheel secured to the pivoting control, a ratchet linked to the first support by a pivoting link, an elastic return element configured to push the ratchet against the ratchet wheel and a control cam configured to separate the ratchet from the ratchet wheel against the elastic return element.