Ski boot with a rear closing device

A sport shoe, is particular a ski boot, comprising:

• a sole;
• an upper shaft region attached to said sole which is intended to enclose a leg of a wearer and said region having two shaft parts which are movable relative to one another;
• a closing device for the detachable connection of the two shaft parts which comprises a tensioning device which is arranged on a first one of said two shaft parts, and a band or cable, which engages on the other second shaft part, said band or cable being tensioned by said tensioning device, and said tensioning device having the following parts:
• an oblong housing which is arranged on the first shaft part and which is displaceable, in its longitudinal direction as the direction of displacement, in relation to the first shaft part against the action of an elastically deformable return element;
• a take-up drum for the band or cable, which drum is accommodated and rotatably mounted in the housing and is displaceable, in the direction of its longitudinal axis, relative to the housing;
• a drive shaft which is coaxial with the take-up drum and mounted rotatably in and displaceably with the housing;
• a shift coupling which couples the drive shaft to the take-up drum;
• a return lock accommodated in the housing for the drive shaft;
• a tensioning lever which can be pivoted to and fro, being connectable to the drive shaft and being displaceable with the housing;
• a tensioning lever coupling for connecting the tensioning lever to the drive shaft, said coupling being active in the direction of tensioning;
• and
• means for bringing about a relative movement between the take-up drum and the housing on displacing the housing to free the shift coupling.