Aircraft seat attachment system provided with a system for locking an activation lever and/or for maintaining a clamping force by friction

An aircraft seat attachment comprising:

• a body adapted to be attached to a seat,
• a plunger mobile relative to the body, and
• an activation lever adapted to drive movement of the plunger relative to the body, and
• a friction force-maintaining system,
• wherein the activation lever comprises a locking system adapted to go from a first open position corresponding to a free state of the activation lever, which can then move relative to the body, to a second closed position corresponding to a locked state of the activation lever, which is immobilized relative to the body, so that the position of the locking system enables visual detection of a state of the activation lever,
• wherein the friction force-maintaining system is adapted to maintain by friction a force clamping the aircraft seat attachment to a rail in the locked state of the aircraft seat attachment so that the activation lever does not participate in maintaining said clamping force, and
• wherein the friction force-maintaining system includes a wedging member adapted to slide between two plane linear non-parallel faces that are part of said body and said plunger, respectively, the wedging member being adapted to maintain the clamping force by friction once said wedging member has been moved by sliding between the two faces via the activation lever.