Locking mechanism for a panel comprising: - a blocking unit intended to selectively take a blocking configuration in which the blocking unit blocks the panel in a closed position, and an unblocking configuration in which the blocking unit lets the panel be opened, - a blocking unit actuation system comprising: - a lever intended to rotate around a first axis between a blocking position and an unblocking position, in order to put the blocking unit in respectively the blocking configuration and the unblocking configuration, the lever comprising an upper arm extending above the first axis, a lower arm extending below the first axis, and a weight fixed to the lower arm, and - a lever actuation device intended to move between a back position and a front position, the lever actuation device comprising a link element providing a link with the lever, the link element comprising a pushing portion intended to push the upper arm of the lever frontward so as to rotate the lever from its blocking position to its blocking position when the lever actuation device moves from its back position to its front position, the lever actuation device further comprises a pushbutton intended to be pushed frontward so as to push the lever actuation device from its back position to its front position, characterized in that the link element further comprises a restoring portion intended to be pushed by the upper arm of the lever when the lever rotates from its blocking position toward its unblocking position in case of a collision from the back, so as to move the lever actuation device toward its front position. - a blocking unit intended to selectively take a blocking configuration in which the blocking unit blocks the panel in a closed position, and an unblocking configuration in which the blocking unit lets the panel be opened, - a blocking unit actuation system comprising: - a lever intended to rotate around a first axis between a blocking position and an unblocking position, in order to put the blocking unit in respectively the blocking configuration and the unblocking configuration, the lever comprising an upper arm extending above the first axis, a lower arm extending below the first axis, and a weight fixed to the lower arm, and - a lever actuation device intended to move between a back position and a front position, the lever actuation device comprising a link element providing a link with the lever, the link element comprising a pushing portion intended to push the upper arm of the lever frontward so as to rotate the lever from its blocking position to its blocking position when the lever actuation device moves from its back position to its front position, the lever actuation device further comprises a pushbutton intended to be pushed frontward so as to push the lever actuation device from its back position to its front position, characterized in that the link element further comprises a restoring portion intended to be pushed by the upper arm of the lever when the lever rotates from its blocking position toward its unblocking position in case of a collision from the back, so as to move the lever actuation device toward its front position. - a lever intended to rotate around a first axis between a blocking position and an unblocking position, in order to put the blocking unit in respectively the blocking configuration and the unblocking configuration, the lever comprising an upper arm extending above the first axis, a lower arm extending below the first axis, and a weight fixed to the lower arm, and - a lever actuation device intended to move between a back position and a front position, the lever actuation device comprising a link element providing a link with the lever, the link element comprising a pushing portion intended to push the upper arm of the lever frontward so as to rotate the lever from its blocking position to its blocking position when the lever actuation device moves from its back position to its front position, the lever actuation device further comprises a pushbutton intended to be pushed frontward so as to push the lever actuation device from its back position to its front position, characterized in that the link element further comprises a restoring portion intended to be pushed by the upper arm of the lever when the lever rotates from its blocking position toward its unblocking position in case of a collision from the back, so as to move the lever actuation device toward its front position.