| 摘要 |
A first preferred embodiment is a roller skate (10) having a shoe portion (12) for receiving a skater's foot and a plurality of wheels (18a, 18b, 18c, 18d). The skate comprises a base (14) having an upper surface (30) securable to an underside of the shoe portion (12) for supporting the received skater's foot, the base (14) including a heel region (24) and a forefoot region (20), the forefoot region (20) having a metatarsal head portion (22). Furtheron, the skate comprises a frame (16) having a forward segment (26) secured to an underside of the base (14) below the forefoot region (20) of the base (14), and a rearward segment (28) secured to the underside of the base (14) below the heel region (24), the forward frame segment (26) rotatably mounting at least one forward wheel (18a, 18b) below the forefoot region (20) of the base (14) and the rearward segment (28) rotatably mounting at least one rearward wheel (18c, 18d) below the heel region (24) of the base (14). One of the forward or rearward frame segments (26, 28) includes first and second stabilizing flanges (50) that extend toward and slidably overlap opposing first and second sides of the other of the forward and rearward frame segments (26, 28) such that the base (14) can flex intermediate of the forefoot region (20) and heel region (24) during skating to permit elevation of the skater's heel. The forefoot region (20) of the base (14) is rigid forward of the metatarsal head portion (22) and the metatarsal head portion (22) of the base (14) defines a stress concentrating contour extending transversely substantially across the base (14) underlying the metatarsal head of the received skater's foot that focuses flexure of the base (14) at the metatarsal head portion (22), the stress concentrating contour including a reduced thickness section of the base (14).
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