| 摘要 |
A midsole structure for an athletic shoe includes an upper midsole (3) formed of a soft elastic material and disposed from a heel region to a forefoot region of the shoe, a lower midsole (4) formed of a soft elastic material and disposed at least at the heel region of the shoe under the upper midsole (3) and a corrugated sheet (5) sandwiched between the upper and lower midsoles (3, 4) and extending from a heel portion (H) of the upper midsole (3) to a midfoot portion (M). The corrugated sheet (5) has a laterally extending sheet portion (5a) and a medially extending sheet portion (5b). Edges (50e, 51e) of the laterally and medially extending sheet portions (5a, 5b) are overlapped in a band-shape and connected to each other. The edge (51e), or a boundary line between the laterally and medially extending sheet portions (5a, 5b) crosses a load transfer curve (Tw) for a heel striker who strikes onto the ground from the heel region of the shoe.
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