Abstract: A sole structure for a shoe includes an upper wall portion disposed on the upper side, a lower wall portion disposed below and away from the upper wall portion, and a sidewall portion that is disposed between the upper wall portion and the lower wall portion and that is elastically deformable in the vertical direction. The upper and lower wall portions and the sidewall portion are formed of resin-made wall-shaped members. A three-dimensional elastic fiber structure formed of resin fibers is provided in the interior region between the upper wall portion and the lower wall portion. The interior region includes a hollow portion that is in contact with the three-dimensional elastic fiber structure via a partition wall formed of a resin-made wall-shaped member.

Abstract: A sole of a sole structure includes an upper wall portion disposed on an upper side, a lower wall portion disposed on a lower side and spaced away from the upper wall portion, and a pair of sidewall portions that extend substantially in a vertical direction between the upper wall portion and the lower wall portion, that have a vertical zigzag shape, that are coupled to the upper wall portion and the lower wall portion, and that extend in a longitudinal direction along the outer peripheries of the upper wall portion and the lower wall portion. The upper wall portion and the lower wall portion and a pair of sidewall portions are resin-made wall members with a predetermined thickness and form an interior space. Each of the sidewall portions has concave parts recessed inwardly and convex parts protruding outwardly and it is compressible in the vertical direction.

Abstract: A sole structure 1 includes: a first sole portion including a first sole body and a first connecting portion provided behind the first sole body; a second sole portion disposed behind the first sole portion and including a second sole body and a second connecting portion provided in front of the second sole body; and a connecting shaft provided along a vertical direction to connect the first connecting portion and the second connecting portion together. Either one of the first sole portion or the second sole portion is turnable around the connecting shaft relative to the other one of the first sole portion or the second sole portion in a foot width direction.

Abstract: A midsole structure of a shoe includes an upper midsole, a lower midsole disposed below the upper midsole, and a wavy sheet interposed between the upper midsole and the lower midsole. The wavy sheet has a wavy shape at its medial and lateral side edge portions and a planar area at its central portion. The lower surface of the upper midsole and the upper surface of the lower midsole have wavy shapes that correspond to the wavy shape of the wavy sheet at their medial and lateral side edge portions and have a planar area that corresponds to the planar area of the wavy sheet at their central portions. The lower surface of the upper midsole and the upper surface of the lower midsole have a plurality of recesses that are disposed in the longitudinal direction at their central portions.

Abstract: A sole structure for a shoe includes an upper wall portion disposed on the upper side, a lower wall portion disposed below and away from the upper wall portion, and a sidewall portion that is disposed between the upper wall portion and the lower wall portion and that is elastically deformable in the vertical direction. The upper and lower wall portions and the sidewall portion are formed of resin-made wall-shaped members. A three-dimensional elastic fiber structure formed of resin fibers is provided in the interior region between the upper wall portion and the lower wall portion. The interior region includes a hollow portion that is in contact with the three-dimensional elastic fiber structure via a partition wall formed of a resin-made wall-shaped member.

Abstract: In a sole structure of a shoe, each of a first sole portion and a second sole portion is configured such that a first sole body and a second sole body come close to each other and are separated from each other at least in the foot length direction while maintaining a state in which a first connection portion and a second connection portion overlap each other in a vertical direction.

Abstract: A method for manufacturing a sole of an article of footwear uses an additive manufacturing through a 3D printer. The sole body 20 has an inclined surface or a curved surface BL0 to be a supported surface by a support at a toe spring portion Tu/a heel-up portion Hu/a side-up portion Su. The method includes a forming process in which a plurality of pillar-shaped supports 20sp that extend from the inclined/curved surface BL0 toward the bottom surface of the sole at the time of forming the sole through the 3D printer, and a cutting process to cut at least a portion of the pillar-shaped supports 20sp.

Abstract: A sole structure includes a sole body. The sole body is a resin-made box-shaped member with a predetermined thickness and an interior space that is defined by an upper wall portion disposed on an upper side, a lower wall portion disposed on a lower side and spaced apart from the upper wall portion, and a pair of sidewall portions disposed between and interconnecting the upper wall portion and the lower wall portion in a heel region or a forefoot region that respectively corresponds to a heel portion or a forefoot portion of a foot of a shoe wearer. The sidewall portions are elastically deformable in a vertical direction and have a plurality of solid or hollow ribs that extend in a substantially vertical direction between the upper wall portion and the lower wall portion.

Abstract: A sole structure 1 includes: a first sole portion including a first sole body and a first connecting portion provided behind the first sole body; a second sole portion disposed behind the first sole portion and including a second sole body and a second connecting portion provided in front of the second sole body; and a connecting shaft provided along a vertical direction to connect the first connecting portion and the second connecting portion together. Either one of the first sole portion or the second sole portion is turnable around the connecting shaft relative to the other one of the first sole portion or the second sole portion in a foot width direction.

Abstract: A sole structure is configured such that in a state where a ground surface of an outsole is in contact with the ground surface, when a planta support surface of a deformable part receives a load of a human body, the deformable part is flexurally deformed downward while being supported on a fixed end functioning as a supporting point, thereby allowing the planta support surface to be inclined downward such that a free end of the deformable part moves downward.

Abstract: A sole of a sole structure includes an upper wall portion disposed on an upper side, a lower wall portion disposed on a lower side and spaced away from the upper wall portion, and a pair of sidewall portions that extend substantially in a vertical direction between the upper wall portion and the lower wall portion, that have a vertical zigzag shape, that are coupled to the upper wall portion and the lower wall portion, and that extend in a longitudinal direction along the outer peripheries of the upper wall portion and the lower wall portion. The upper wall portion and the lower wall portion and a pair of sidewall portions are resin-made wall members with a predetermined thickness and form an interior space. Each of the sidewall portions has concave parts recessed inwardly and convex parts protruding outwardly and it is compressible in the vertical direction.

Abstract: In a sole structure of a shoe, each of a first sole portion and a second sole portion is configured such that a first sole body and a second sole body come close to each other and are separated from each other at least in the foot length direction while maintaining a state in which a first connection portion and a second connection portion overlap each other in a vertical direction.

Abstract: An outsole includes: a first stud projecting downwards in a stationary manner in a vertical direction from a reference surface and having a first projection surface; and a second stud having a second projection surface. The second stud moves in the vertical direction so that, when an external force acts on the second projection surface, the outsole hollow is compressively transformed and the second projection surface comes close to the reference surface.

Abstract: An upper structure includes: an upper body including a stress relaxing portion which is elastically deformable; and a shoelace (a fastening member) attached to the upper body. The stress relaxing portion has: such stretchability that in an elastic range, the stress relaxing portion stretches to become longer when the upper body is pulled with the shoelace than an initial length of the stress relaxing portion; and stress relaxation properties with which the stress relaxing portion relaxes stress with the passage of time from a moment when the upper body is pulled, while remaining in the stretched state.

Abstract: A midsole structure of a shoe includes an upper midsole, a lower midsole disposed below the upper midsole, and a wavy sheet interposed between the upper midsole and the lower midsole. The wavy sheet has a wavy shape at its medial and lateral side edge portions and a planar area at its central portion. The lower surface of the upper midsole and the upper surface of the lower midsole have wavy shapes that correspond to the wavy shape of the wavy sheet at their medial and lateral side edge portions and have a planar area that corresponds to the planar area of the wavy sheet at their central portions. The lower surface of the upper midsole and the upper surface of the lower midsole have a plurality of recesses that are disposed in the longitudinal direction at their central portions.

Abstract: A sole structure is configured such that in a state where a ground surface of an outsole is in contact with the ground surface, when a planta support surface of a deformable part receives a load of a human body, the deformable part is flexurally deformed downward while being supported on a fixed end functioning as a supporting point, thereby allowing the planta support surface to be inclined downward such that a free end of the deformable part moves downward.

Abstract: A sole structure for a sports shoe that controls bendability of a forefoot region of the sole structure. The sole structure includes an upper midsole disposed on an upper side of the forefoot region of the sports shoe and formed of a soft elastic material, a lower midsole disposed under the upper midsole and formed of a soft elastic material, and an outsole that is disposed on a lower surface of the lower midsole and that has sole bent grooves extending substantially in a sole width direction. Both the lower surface of the upper midsole and the upper surface of the lower midsole have corrugated mating surfaces that are formed of wavy shapes extending substantially in a sole longitudinal direction. Ridge lines and trough lines of the wavy shapes of the upper midsole extend substantially in the sole width direction. The ridge lines of the wavy shapes of the upper midsole of a relatively higher hardness are overlapped with the sole bent grooves of the outsole in a vertical direction.

Abstract: A shoe is configured such that front and back clearances, which are respectively provided between a front wall surface of a second receiving portion and a front end of a second buffering member received in the second receiving portion and between a back wall surface of the second receiving portion and a back end of the second buffering member received in the second receiving portion, permit the second buffering member made of an elastic material to move in a longitudinal direction in the second receiving portion when a ground surface of an outsole contacts the ground and the weight of a human body is put on a heel support surface.

Abstract: A sole structure for a shoe that can reduce the burden of MP joints and a knee joint of a shoe wearer's foot during running and that can improve cushioning properties. The sole structure of the shoe includes an upper plate of a hard elastic member disposed at a forefoot region of the shoe, a lower plate of a hard elastic member disposed under and spaced away from the upper plate, and a midsole of a soft elastic member interposed between the upper plate and the lower plate. The midsole has a longitudinally extending hollow portion that is upwardly concavely curved at a lateral mid-portion of the midsole. The lower plate has a concave portion corresponding to the hollow portion of the midsole.

Abstract: A sole structure for a shoe that can reduce the burden of MP joints and a knee joint of a shoe wearer's foot during running and that can improve cushioning properties. The sole structure of the shoe includes an upper plate of a hard elastic member disposed at a forefoot region of the shoe, a lower plate of a hard elastic member disposed under and spaced away from the upper plate, and a midsole of a soft elastic member interposed between the upper plate and the lower plate. The midsole has a longitudinally extending hollow portion that is upwardly concavely curved at a lateral mid-portion of the midsole. The lower plate has a concave portion corresponding to the hollow portion of the midsole.