Patent attributes
An upper structure for a shoe improves a fit of the heel portion during heel contact with the ground to the push off motion of a foot. The upper structure includes an upper body 30, and an outside upper member 31 that overlaps the lateral side of the upper body 30 to cover the talus T of the foot, and that has a bottom edge portion 31a fixedly attached to the bottom surface of the upper body 30. The rear end portion A of the bottom edge portion 31a is located rearwardly of the load centerline C of the calcaneus. A rear edge portion 31c of the outside upper member 31 is provided separately from the upper body 30 rearwardly of the talus T of the foot. An instep edge portion 31b of the outside upper member 31 is connected to the shoelace 4. On the lateral side of the heel portion of the upper body 30, there is a region 10 that is expandable and contractible in the longitudinal direction. The top end of the region 10 extends to the opening of the upper body 30 and the bottom end B of the region 10 is disposed in front of the load centerline C of the calcaneus and below a height h that corresponds to 55% of the lateral ankle height H of the foot.
