Structure of front foot portion of shoe sole

摘要

There is provided a structure of a shoe sole that suppresses excessive bending by reinforcing the front foot portion of a sole having a reduced weight. The shoe sole may include a mid sole for absorbing an impact of landing, an outer sole placed under the mid sole and in contact with the ground, and a reinforcement element for suppressing bending of a front foot portion during push-off. The reinforcement element includes a medial reinforcement portion extending in a front-rear direction along a medial side of the front foot portion; a lateral reinforcement portion extending in the front-rear direction along a lateral side of the front foot portion; a connection and reinforcement portion for connecting the medial and lateral reinforcement portions and for providing reinforcement; and a connection portion for connecting the medial reinforcement portion and the lateral reinforcement portion in an area posterior to the connection and reinforcement portion.

主权项

1. A shoe sole, comprising:
a mid sole for absorbing an impact of landing, an outer sole placed under the mid sole so as to be in contact with ground, and a reinforcement element for suppressing bending of a front foot portion of the outer sole and a front foot portion of the mid sole during push-off, wherein:
the front foot portion of the outer sole includes a plurality of first portions spaced apart from one another at least in a front-rear direction of a foot;the mid sole includes a first main mid sole and a second main mid-sole, the first main mid sole comprising a single layer of foamed resin continuously extending from a medial edge of the mid sole to a lateral edge of the mid sole, the second main mid sole comprising another single layer of foamed resin placed below the first main mid sole, the second main mid sole forming a pair of surfaces extending from one of the medial edge and the lateral edge of the second main mid sole towards a central portion in a width direction of the foot, the pair of surfaces facing each other in the front-rear direction, the pair of surfaces defining a groove extending in the width direction of the foot, the pair of surfaces comprising a front vertical surface and a back vertical surface of the groove;the front foot portion of the second main mid sole includes a plurality of second portions spaced apart from one another by the groove so as to break continuity of deformation at least in the front-rear direction of the foot, the second portions being continuous with each other in the front-rear direction in at least a part except the groove such that a central portion of the front foot portion in the front-rear direction excludes the groove and is continuous; the reinforcement element includes a plurarity of third portions attached to an upper surface of the outer sole and sandwiched between the first portions and the second portions; and the reinforcement element includes a bending suppressing portion placed and extending between the third portions in the front-rear direction of the foot, thereby serving to suppress the bending.