| 主权项 |
1. A sole for a footwear, the sole comprising:
a front foot portion having a plurality of spikes, the spikes made of metal, each of the spikes including a flat-plate-shaped base and a pin that are integrated with each other, the base of each of the spikes is separated from one another; a rear foot portion posterior to the front foot portion; at least one layer of a main reinforcement sheet which is arranged spanning from a front end of the front foot portion to a rear end of a middle foot portion and made of a fiber reinforcement coated with a matrix resin, the at least one layer of the main reinforcement sheet is continuous from the front end of the front foot portion to the rear end of the middle foot portion; a layer of a first cut-off sheet which is arranged at least in the middle foot portion and made of a fiber reinforcement coated with a matrix resin; and a layer of a second cut-off sheet which is arranged at least in the middle foot portion and made of a fiber reinforcement coated with a matrix resin, wherein, the at least one layer of the main reinforcement sheet, the layer of the first cut-off sheet, and the layer of the second cut-off sheet are laminated with one another, the layer of the first cut-off sheet and the layer of the second cut-off sheet are laminated with each other in an up-and-down direction, a front end of the first cut-off sheet is adapted to be positioned posterior to a front end of a proximal phalanx of a big toe and is adapted to be positioned anterior to a base of the metatarsal bone of the big toe, a front end of the second cut-off sheet is adapted to be positioned posterior to a head of the proximal phalanx of the big toe and is adapted to be positioned anterior to the base of the metatarsal bone of the big toe, a rear end of the main reinforcement sheet is arranged posterior to the front end of the first cut-off sheet, the front end of the first cut-off sheet is arranged posterior to a front end of the main reinforcement sheet, a rear end of the first cut-off sheet is arranged posterior to the front end of the second cut-off sheet, the front end of the second cut-off sheet is arranged posterior to the front end of the first cut-off sheet, and the main reinforcement sheet is arranged at such a position as to cover directly above a top surface of the flat-plate-shaped base of each of the spikes, and at least one layer of a synthetic resin sheet, which is thicker than a thickness of each coat of the matrix resins, is sandwiched between the top surface and the main reinforcement sheet for at least one of the plurality of spikes. |
