Rear entry ski boot

Alpine ski boot of the rear entry type comprising a shell base 1 and an upper 2 journalled on the shell base, and an apparatus for tightening the foot of the skier located within the interior of the boot, said tightening apparatus comprising a movable foot tightening element within the shell base, a foot tightening lever positioned on the outside of the upper, at the rear of the same, and a flexible linkage element between the tightening lever and the movable tightening element in a manner so as to exert a traction on the flexible linkage element and to press the movable tightening element on the foot of the skier when the foot tightening lever is pressed against the rear portion of the upper, in a tightening position, and wherein at least the rear portion is the upper of pivotably mounted around a first horizontal and transverse axis, on a stirrup surrounding the rear of the shell base and which is itself pivotably mounted on this shell base, around a second horizontal and transverse axis positioned at the lower level of that of the first journal axis of the upper on the stirrup, the stirrup carries, at its rear central portion, an element for latching the stirrup in the upper position for skiing, this element being biased by a return spring in the direction of the unlatching position in which it is distanced from the shell base, and being adapted to be activated by the foot tightening lever, when this lever is pressed against the rear of the upper in the foot tightening position, and to be pushed back, by the tightening lever, in the direction of the shell base on which it is then supported to ensure the latching of the stirrup in the upper position for skiing, the disengagement of the tightening lever automatically causing the movement of the latching element of the stirrup, under the effect of its return spring, into the unlatching position and ensuring the freeing of the stirrup.