| 摘要 |
A midsole structure for an athletic shoe includes an upper midsole ( 3 ) formed of a soft elastic material, a lower midsole ( 4 ) disposed under the upper midsole ( 3 ) and formed of a soft elastic material, and a wavy plate assembly ( 5 ) interposed between the upper midsole ( 3 ) and the lower midsoles ( 4 ). The wavy plate assembly ( 5 ) is comprised of a wavy board ( 50 ) and a pair of sidewall members ( 51 ) provided discretely from the wavy board ( 50 ) and disposed on opposite sides of the wavy board ( 50 ). Each of the sidewall members ( 51 ) is composed of a wavy bottom-portion ( 51 b) overlapping the wavy board ( 50 ) and an upraised portion ( 51 a) extending upwardly from the wavy bottom portion ( 51 b) to face a side surface of the upper midsole ( 3 ). Provision of the wavy board ( 50 ) and the sidewall members ( 51 ) discretely from each other simplifies a layout of a mold for forming the wavy plate assembly ( 5 ), thereby reducing a manufacturing cost.
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