WO2024111066A1 - Structure de chaussure - Google Patents

Structure de chaussure Download PDF

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Publication number
WO2024111066A1
WO2024111066A1 PCT/JP2022/043227 JP2022043227W WO2024111066A1 WO 2024111066 A1 WO2024111066 A1 WO 2024111066A1 JP 2022043227 W JP2022043227 W JP 2022043227W WO 2024111066 A1 WO2024111066 A1 WO 2024111066A1
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WO
WIPO (PCT)
Prior art keywords
outsole
foot
toes
shoe
transverse grooves
Prior art date
Application number
PCT/JP2022/043227
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English (en)
Japanese (ja)
Inventor
毅 ▲高▼橋
保 山中
大悟 ▲高▼橋
Original Assignee
株式会社Bmz
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Publication date
Application filed by 株式会社Bmz filed Critical 株式会社Bmz
Priority to PCT/JP2022/043227 priority Critical patent/WO2024111066A1/fr
Publication of WO2024111066A1 publication Critical patent/WO2024111066A1/fr

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    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form

Definitions

  • This disclosure relates to shoe structures.
  • Patent Document 1 discloses a shoe that can improve the fit.
  • the shoe has a sole on which the foot rests and an upper that covers the foot, and by providing a loose portion in the sole, stretchability in the front-to-back direction is ensured.
  • This type of shoe uses a structure called a toe spring, in which the bottom surface of the sole on the toe side is curved upwards.
  • a person wearing such shoes walks by landing on his heel and tilting his foot so that it rolls forward, shifting his center of gravity forward. For this reason, a problem with people wearing conventional shoes is that it becomes difficult to grip the toes when walking. In this case, the muscles of the lower leg and foot are not used sufficiently, and physical function may be impaired. Therefore, the present invention provides a shoe structure that allows the toes to easily grip the shoe when worn.
  • the shoe structure of the present invention includes an outsole, in which a first underside surface on the underside of the part on which the heel of the foot rests and a second underside surface on the underside of the part on which the balls of the big toe and little toe rest are formed flush with each other, and a third underside surface on the underside of the part on which the toes rest is formed flat with a step portion positioned higher than the second underside surface.
  • a step is provided between the third lower surface and the second lower surface, and the third lower surface has a flat shape, so that the third lower surface on which the toes rest tends to bend downward. This makes it easier for the wearer to grip the toes.
  • FIG. 1 is an exploded perspective view showing a shoe according to an embodiment of the present invention.
  • FIG. 2 is a bottom view of the skeletal structure of the foot.
  • FIG. 3 is a bottom view of an outsole according to the embodiment.
  • FIG. 4 is a cross-sectional view taken along line IV-IV of FIG.
  • FIG. 5 is a plan view of the outsole.
  • FIG. 6 is a side view of the outsole.
  • FIG. 7 is an enlarged view of FIG.
  • FIG. 8 is a plan view of an outsole according to another embodiment.
  • FIG. 9 is a side view of an outsole according to another embodiment.
  • FIG. 10 is a side view of an outsole according to another embodiment 2.
  • FIG. 1 is an exploded perspective view showing a shoe 1 according to the present embodiment.
  • the following description will be given with reference to a right-foot shoe 1, but the same description can be applied to a left-foot shoe.
  • FR, UP, and IN in the drawing indicate the front, the top, and the inside of the foot in the width direction, respectively.
  • the inside of the foot in the width direction is the left direction for the right foot and the right direction for the left foot.
  • the outside of the foot in the width direction is the right direction for the right foot and the left direction for the left foot.
  • the shoe 1 is footwear that protects the wearer's foot from the toes to around the ankles.
  • the shoe 1 of this embodiment is a golf shoe.
  • the shoe 1 has an upper 3, an inner sole 5, a midsole 7, and an outsole 70.
  • the upper 3 covers the wearer's foot in the shoe 1 horizontally and from above.
  • the inner sole 5 is the part on which the wearer's foot is directly placed, and absorbs shock to the foot and improves the fit of the shoe 1 to the foot.
  • the midsole 7 is the part provided between the inner sole 5 and the outsole 70, and mainly absorbs shock to the foot.
  • the outsole 70 is the part of the shoe 1 that comes into contact with the ground, and is disposed below the midsole 7.
  • the outsole 70 protects the wearer's foot from shocks received from the ground and unevenness of the ground. Therefore, it is generally desirable for the outsole 70 to have a sufficient thickness.
  • Figure 2 is a bottom view showing the skeletal structure 10 of the foot. This drawing shows the skeletal structure 10 of the foot as seen from below, with some of the bones hidden because they overlap. A plan view of the front of the foot shows a different way in which the bones overlap compared to the bottom view of Figure 2.
  • the skeletal structure 10 of the foot is composed of the calcaneus 12, talus 14, navicular bone 16, cuboid bone 18, first to third cuneiform bones 20, 22, 24, first to fifth metatarsals 26, 28, 30, 32, 34, first to fifth proximal phalanges 36, 38, 40, 42, 44, second to fifth middle phalanges 46, 48, 50, 52, and first to fifth distal phalanges 54, 56, 58, 60, 62.
  • the anterior ends of the first to fifth metatarsals 26, 28, 30, 32, 34 are the first to fifth metatarsal heads 26A (also called the ball of the foot 26A), 28A, 30A, 32A, 34A (also called the ball of the foot 34A).
  • the stepped portion located at the front of the calcaneus 12 is the anterior calcaneus (also called the calcaneal tubercle) 12A.
  • the skeleton of the big toe (also called the first toe) has the first proximal phalangeal bone 36 and the first distal phalangeal bone 54.
  • the big toe bends mainly at a first joint (also called the interphalangeal joint) 54B that connects the first proximal phalangeal bone 36 and the first distal phalangeal bone 54, and a second joint (also called the metatarsophalangeal joint) 36B that connects the first proximal phalangeal bone 36 and the first metatarsal bone 26.
  • the big toe has two bones and two joints, and bends at two joints.
  • the skeleton of the index finger, middle finger, ring finger and little finger (also called the second, third, fourth and fifth toes, respectively) has the second to fifth proximal phalanges 38, 40, 42 and 44, the second to fifth middle phalanges 46, 48, 50 and 52 and the second to fifth distal phalanges 56, 58, 60 and 62.
  • the second to fifth distal phalanges 56, 58, 60 and 62 are connected to the second to fifth middle phalanges 46, 48, 50 and 52 via first joints (also called distal interphalangeal joints) 56B, 58B, 60B and 62B.
  • the second to fifth middle phalanges 46, 48, 50, 52 are connected to the second to fifth proximal phalanges 38, 40, 42, 44 via second joints (also called proximal interphalangeal joints) 46B, 48B, 50B, 52B.
  • the second to fifth proximal phalanges 38, 40, 42, 44 are connected to the second to fifth metatarsal heads 28A, 30A, 32A, 34A via third joints (also called metatarsophalangeal joints) 38B, 40B, 42B, 44B.
  • the index finger to the little finger each have three bones and three joints, and bend at the three joints.
  • Fig. 3 is a bottom view of the outsole 70.
  • Fig. 4 is a cross-sectional view of the outsole 70 taken along the line IV-IV.
  • the general positional relationship of the skeletal structure 10 of the foot corresponding to the outsole 70 is shown by superimposing imaginary lines.
  • a lower surface 70A of the outsole 70 which is the surface that comes into contact with the ground, is formed with a first lower surface 71, a force pad (second lower surface) 73, and a third lower surface 75.
  • the first lower surface 71 is the underside of the first support portion 72 of the outsole 70, which is the portion on which the heel of the foot rests, i.e., the lower surface 70A side of the first support portion 72. More specifically, the first support portion 72 is the portion that generally overlaps with the calcaneus 12 in a plan view when the wearer wears the shoe 1.
  • the first lower surface 71 has a circular spike 71a and multiple spikes 71b, 71c formed around the spike 71a.
  • Spike 71a is a part on the first lower surface 71 that supports the load received from the heel of the foot and digs into the ground to prevent slipping between the outsole 70 and the ground.
  • Spike 71a has a downwardly protruding annular ridge that defines the outer shape of spike 71a, and a circular protrusion located in the center of the annular ridge and protruding downward.
  • the downwardly protruding circular protrusions are arranged at equal intervals on the annular ridge. From the side of the arranged protrusions, each of them has a rib that extends toward the center of the annular ridge, and is inclined in the direction in which the height thickness of the central side of the annular ridge becomes smaller.
  • Spikes 71b and 71c are parts of the first lower surface 71 that dig into the ground to prevent slippage between the outsole 70 and the ground.
  • Spikes 71b are trapezoidal protrusions arranged in a ring shape around spike 71a, and are inclined so that their height increases toward the center of spike 71a.
  • Spikes 71c are roughly triangular prism-shaped protrusions arranged between spikes 71b, and protrude downward.
  • the force pad 73 is on the back side of the second support portion 74 of the outsole 70, which is the portion on which the ball of the big toe 26A and the ball of the little toe 34A rest, i.e., the underside 70A side of the second support portion 74.
  • the force pad 73 has spikes 73a, 73b and multiple spikes 73c.
  • Spikes 73a and 73b are the parts of the force pad 73 that support the load received from the ball of the big toe 26A and the ball of the little toe 34A of the foot, respectively, and dig into the ground to prevent slipping.
  • Spikes 73a and 73b have the same shape as spike 71a, and their sizes vary depending on the size of the load they receive. That is, spike 71a, which supports the largest load from the heel, is the largest of spikes 71a, a, and 73b.
  • Spike 73a which supports the load from the ball of the big toe 26A, is the second largest of spikes 71a, 73a, and 73b.
  • Spike 73b which supports the smallest load from the ball of the little toe 34A, is the smallest of spikes 71a, 73a, and 73b.
  • Spikes 73c are the parts of force pad 73 that dig into the ground to prevent slipping.
  • Spikes 73c are triangular prisms arranged in a circle around spikes 73a and 73b, and protrude downward.
  • the third lower surface 75 is the back side of the third support portion 76, which is the portion of the outsole 70 on which the toes of the foot rest, i.e., the lower surface 70A side of the third support portion 76.
  • the first to fifth proximal phalanges 36, 38, 40, 42, 44, the second to fifth middle phalanges 46, 48, 50, 52, and the first to fifth distal phalanges 54, 56, 58, 60, 62 generally overlap the third support portion 76 in a plan view.
  • the third lower surface 75 has a big toe support portion 75a and a little toe support portion 75b.
  • the big toe support section 75a is the portion that mainly overlaps the big toe of the wearer in a plan view. Numerous spikes 75c are formed on the big toe support section 75a. Each spike 75c is formed with two consecutive oval protrusions that protrude downward. Each spike 75c formed on the big toe support section 75a is positioned with its front side inclined toward the outside in the width direction of the foot.
  • the little toe support portion 75b is the portion that generally overlaps the wearer's index to little toes in a plan view. Many spikes 75d are formed on the little toe support portion 75b. Each spike 75d is formed with two consecutive oval protrusions that protrude downward. Each spike 75d formed on the little toe support portion 75b is positioned with its front side inclined toward the inside of the foot in the width direction.
  • a groove 75e is formed in the lower surface 70A of the outsole 70, which is recessed upward. This allows the big toe support section 75a and the little toe support section 75b to move easily independently of each other.
  • first lower surface 71 can be considered to be a flat surface formed at the same height as the lower end of spike 71a and the lower ends of spikes 71b and 71c.
  • force pad 73 can be considered to be a flat surface formed at the same height as the bottom ends of spikes 73a and 73b and the bottom end of spike 73c.
  • the lower ends of the spikes 75c and 75d of the third lower surface 75 are formed to be approximately flush with each other in the height direction. Therefore, the third lower surface 75 can be considered to be a flat surface formed at the same height as the lower ends of the spikes 75c and 75d.
  • a step portion 77 extending in the width direction of the foot is formed between the force pad 73 and the third lower surface 75 on the lower surface 70A of the outsole 70.
  • the step portion 77 has a recess 77a and steps 77b and 77c.
  • the recess 77a is a portion where the lower surface 70A is recessed upward.
  • the step 77b is a step that connects the recess 77a and the force pad 73.
  • the step 77c is a step that connects the recess 77a and the third lower surface 75.
  • the height difference between the recess 77a and the force pad 73 caused by the step 77b is larger by a difference d than the height difference between the recess 77a and the third lower surface 75 caused by the step 77c.
  • the third lower surface 75 is positioned above the force pad 73 by the difference d.
  • the first lower surface 71 is approximately flush with the force pad 73. Therefore, when a wearer is wearing the shoe 1 and standing upright on flat ground, the parts of the lower surface 70A of the outsole 70 that come into contact with the ground are the first lower surface 71 and the force pad 73, and the third lower surface 75 is separated from the ground by a difference d. In this way, there is easily room for the shoe 1 to curve downward below the third lower surface 75 on which the toes rest.
  • the front side of the outsole 70 i.e., the upper surface 70B of the outsole 70
  • the first upper surface 72B which is the front side of the first support part 72
  • the second upper surface 74B which is the front side of the second support part 74
  • the third upper surface 76B which is the front side of the third support part 76.
  • a configuration in which the first upper surface 72B is located at a higher position on the upper surface 70B is suitable for, for example, performing a golf swing, because the wearer's calcaneus 12 is kept in a higher position, making it easier for the pelvis to tilt forward.
  • the front part of the second upper surface 74B and the third upper surface 76B are formed flat.
  • Figure 5 is a plan view of outsole 70, showing the configuration of top surface 70B.
  • third top surface 76B on which the toes rest is formed with two first transverse grooves 81, 82 and three second transverse grooves 83, 84, 85 that extend in the width direction to increase the range of motion of the big toe and the index finger to the little finger.
  • the first transverse grooves 81, 82 are formed in the thumb placement portion 80A, which is the portion of the third upper surface 76B on which the thumb rests, and are grooves recessed downward.
  • the first transverse grooves 81, 82 each extend in the width direction and are gently curved in a direction that makes the front side convex.
  • the first transverse groove 81 is provided at a position that is aligned with the first joint 54B of the big toe when the wearer wears the shoe 1.
  • the first transverse groove 82 is provided at a position that is aligned with the second joint 36B of the big toe when the wearer wears the shoe 1. In this way, the two first transverse grooves 81, 82 are provided in the thumb placement portion 80A aligned in the front-to-rear direction of the foot, according to the number of joints in the big toe.
  • the second transverse grooves 83-85 are formed in the other toe placement portion 80B, which is the portion of the third upper surface 76B on which the index finger to the little finger rest, and are grooves that are recessed downward.
  • the second transverse grooves 83-85 each extend in the width direction and are gently curved in a direction that is convex toward the front side in accordance with the arrangement of each joint.
  • the second transverse groove 83 is provided in a position that, in a plan view, is aligned with the first joints 56B, 58B, 60B, and 62B of the index finger to the little finger when the wearer wears the shoe 1.
  • the second transverse groove 84 is provided in a position that, in a plan view, is aligned with the second joints 46B, 48B, 50B, and 52B of the index finger to the little finger when the wearer wears the shoe 1.
  • the second transverse groove 85 is provided in a position that, in a plan view, is aligned with the third joints 38B, 40B, 42B, and 44B of the foot when the wearer wears the shoe 1.
  • the other finger placement section 80B has three second horizontal grooves 83 to 85 aligned in the front-to-back direction of the foot, in accordance with the number of joints in each of the index finger to the little finger.
  • the first horizontal grooves 81 and 82 are located on the extension lines of the second horizontal grooves 84 and 85.
  • the second transverse grooves 83 to 85 are arranged in the order of increasing width in the front-rear direction toward the front side of the foot, similar to the first transverse grooves 81 and 82. That is, the front-rear width W3 of the second transverse groove 83 is wider than the front-rear width W4 of the second transverse groove 84. The width W4 is wider than the front-rear width W5 of the second transverse groove 85. Specifically, in this embodiment, the width W3 is set to 2.0 mm, the width W4 is set to 1.5 mm, and the width W5 is set to 1.0 mm.
  • the widths W1 and W2 of the first transverse grooves 81 and 82 are set to be wider than the widths W3 to W5 of the second transverse grooves 83 to 85.
  • the width W1 of the first transverse groove 81 located on the extension line of the second transverse groove 84 is wider than the width W4 of the second transverse groove 84.
  • the width W2 of the first transverse groove 82 located on the extension line of the second transverse groove 85 is wider than the width W5 of the second transverse groove 85.
  • FIG. 6 is a side view of the outsole 70, showing the outsole 70 as seen from the front side of the foot. As shown in FIG. 6, the lengths L1, L2 of the first transverse grooves 81, 82 corresponding to the big toe are shorter than the lengths L3-L5 of the second transverse grooves 83-85 corresponding to the index finger to the little finger.
  • the first transverse grooves 81, 82 are arranged in an order in which the vertical depth gradually increases toward the front of the foot. That is, the depth D1 of the first transverse groove 81 on the front side of the foot from the first transverse groove 82 is greater than the depth D2 of the first transverse groove 82. Specifically, in this embodiment, the depth D1 is set to 4.0 mm, and the depth D2 is set to 3.0 mm.
  • the second transverse grooves 83-85 are arranged in an order in which the vertical depth gradually increases toward the front of the foot. That is, the depth D3 of the second transverse groove 83, which is the furthest forward of the foot among the second transverse grooves 83-85, is greater than the depths D4 and D5 of the second transverse grooves 84 and 85. Furthermore, the depth D4 of the second transverse groove 84, which is located further forward of the foot than the second transverse groove 85, is greater than the depth D5 of the second transverse groove 85. Specifically, in this embodiment, the depth D3 is set to 3.0 mm, the depth D4 is set to 2.0 mm, and the depth D5 is set to 1.0 mm.
  • the depths D1 and D2 of the first transverse grooves 81 and 82 are set to be greater than or equal to the depths D3 to D5 of the second transverse grooves 83-85. More specifically, the first transverse grooves 81 and 82 are on the extension lines of the second transverse grooves 84 and 85, respectively, but the depths D1 and D2 of the first transverse grooves 81 and 82 located on the inner side in the width direction of the foot are greater than the depths D4 and D5 of the second transverse grooves 84 and 85.
  • the thickness of the third support portion 76 is locally reduced. Therefore, the bending rigidity in the vertical direction is locally reduced in the portions of the third support portion 76 where the first transverse grooves 81, 82 and the second transverse grooves 83-85 are formed.
  • the amount of reduction in the local bending stiffness of the third support part 76 due to the first transverse grooves 81, 82 and the second transverse grooves 83-85 increases as the widths W1-W5 in the front-rear direction increase.
  • the amount of reduction in the local bending stiffness of the third support part 76 due to the first transverse grooves 81, 82 and the second transverse grooves 83-85 increases as the depths D1-D5 increase. Therefore, the portion of the third support part 76 where the first transverse groove 81 is formed on the front side has a lower bending stiffness in the vertical direction than the portion where the first transverse groove 82 is formed on the rear side.
  • the portion of the third support part 76 where the second transverse groove 83 is formed on the front side of the second transverse groove 84 has a lower bending stiffness in the vertical direction than the portion where the second transverse groove 84 is formed.
  • the portion of the third support part 76 where the second transverse groove 84 is formed on the front side of the second transverse groove 85 has a lower bending stiffness in the vertical direction than the portion where the second transverse groove 85 is formed.
  • the depths D1, D2 of the first transverse grooves 81, 82 are greater than the depths D4, D5 of the second transverse grooves 84, 85.
  • the portion of the third support part 76 where the first transverse grooves 81, 82 are formed tends to have less bending rigidity than the portion where the second transverse grooves 83-85 are formed.
  • the force of the thumb is less likely to escape to the outside in the width direction, and the portion of the third support part 76 where the first transverse grooves 81, 82 are formed tends to bend.
  • Fig. 7 is an enlarged view of Fig. 4.
  • the approximate positions of the index fingers of a wearer wearing the shoe 1 are indicated by imaginary lines.
  • the third underside 75 is positioned above the force pad 73 by the difference d. Furthermore, the force pad 73 is in contact with the ground when the wearer wearing the shoe 1 stands upright. For this reason, as shown in FIG. 7, a gap with a height equivalent to the difference d is created between the third underside 75 and the ground G. In this way, because a gap is created between the third underside 75 and the ground G, the wearer can bend the big toe to bend the third support portion 76 downward. Furthermore, because the third underside 75 is formed flat, it is easy for the wearer to bend the third support portion 76 downward.
  • the parts of the big toe toe that correspond mainly to the first to fifth distal phalanges 54 to 62, which are the bones closest to the tip press against the third upper surface 76B.
  • the first transverse grooves 81, 82 and the second transverse grooves 83 to 85 are formed along the joints of the big toe toe. Therefore, the parts of the big toe toe that mainly press against the third upper surface 76B are on the front side of the transverse grooves 81, 82 and the second transverse grooves 83 to 85 on the third upper surface 76B.
  • the second toe pad 56C corresponding to the second distal phalange 56 presses against the load area P on the third upper surface 76B, which is on the front side of the second transverse groove 83.
  • the load area P of the third upper surface 76B receives a downward force, and the third support part 76 bends downward.
  • the bending stiffness of the third support portion 76 is locally reduced in the portions where the first transverse grooves 81, 82 and the second transverse grooves 83-85 are formed. Therefore, when the wearer bends his/her thumb through little finger and the third upper surface 76B receives a downward force, the third support portion 76 is likely to bend from the first transverse grooves 81, 82 and the second transverse grooves 83-85 as starting points.
  • the first transverse grooves 81, 82 and the second transverse grooves 83-85 are formed at positions that follow the joints of the thumb through little finger, respectively. Therefore, the third support portion 76 curves starting from the first transverse grooves 81, 82 and the second transverse grooves 83-85, so that the third upper surface 76B can easily follow the bending of the thumb through little finger.
  • the areas where the thumb to little finger mainly press against the third upper surface 76B are located forward of the first transverse grooves 81, 82 and the second transverse grooves 83-85 on the third upper surface 76B. Therefore, the bending moment acting on the third support part 76 is smaller in the areas of the third support part 76 where the first transverse grooves 81, 82 and the second transverse grooves 83-85 are formed, which are located closer to the front.
  • the amount of reduction in the local bending rigidity of the third support part 76 due to the first transverse grooves 81, 82 and the second transverse grooves 83-85 is larger in the areas of the third support part 76 where the first transverse grooves 81, 82 and the second transverse grooves 83-85 are formed, which are located closer to the front. Therefore, the first transverse grooves 81 and the second transverse grooves 83 on the front side of the outsole 70, which are less likely to be subjected to a large bending moment, can be easily and greatly bent.
  • the first joints 54B, 56B, 58B, 60B, and 62B of the thumb to little finger bend significantly when gripping the toes.
  • the third upper surface 76B becomes easier to bend along the bending of the thumb to little finger.
  • the shoe 1 of this embodiment has an outsole 70, and the first lower surface 71 on the underside of the first support portion 72, which is the portion on which the heel of the foot rests, and the force pad 73 on the underside of the second support portion 74, which is the portion on which the ball of the big toe 26A and the ball of the little toe 34A of the foot rest, are formed flush with each other, and the third lower surface 75 on the underside of the third support portion 76, which is the portion on which the toes rest, is formed flat by providing a step portion 77 so that it is located above the force pad 73. Therefore, the step portion 77 tends to create a gap between the flat third lower surface 75 and the ground, and the third lower surface 75 on which the toes rest tends to bend downward. This makes it easier for the wearer to grip the toes.
  • a third upper surface 76B which is the outer side of the third support portion 76 that is the portion of the outsole 70 on which the toes of the foot rest, is provided with a plurality of first transverse grooves 81, 82 and second transverse grooves 83-85 extending in the width direction of the third support portion 76 and formed along the joints of the big toe and other toes so as to increase the range of motion of the big toe and other toes. Therefore, the first transverse grooves 81, 82 and the second transverse grooves 83 to 85 make it easier for the third lower surface 75 to bend. This makes it easier for the wearer to grip the toes.
  • first transverse grooves 81, 82 and the second transverse grooves 83 to 85 make it easier for the wearer to grip the toes while minimizing the thinned portions of the outsole 70. This makes it easier for the wearer to grip the toes while adequately protecting the wearer's feet.
  • the first lateral grooves 81, 82 and the second lateral grooves 83 to 85 include a plurality of first lateral grooves 81, 82 formed in the thumb rest portion 80A, which is the portion on which the thumb is rested, and a plurality of second lateral grooves 83 to 85 formed in the other finger rest portion 80B, which is the portion on which the other fingers are rested. Therefore, by forming the first transverse grooves 81, 82 and the second transverse grooves 83 to 85 separately, the wearer can easily move the big toe and other fingers independently, which makes it easier for the wearer to grip the toes.
  • the number of first transverse grooves 81, 82 is two, matching the number of joints of the big toe, and the number of second transverse grooves 83 to 85 is three, matching the number of joints of the other toes. Therefore, the first transverse grooves 81, 82 and the second transverse grooves 83 to 85 can be easily bent to fit the joints between the big toe and the other fingers, respectively, making it easier for the wearer to grip the toes.
  • the first transverse grooves 81, 82 and second transverse grooves 83-85 are formed so that the widths W1-W5 of the respective grooves become gradually wider toward the tip of the toe. Therefore, the outsole 70 is more likely to bend significantly at the first transverse groove 81 and the second transverse groove 83 on the tip side where moment is less likely to be applied. This makes it easier for the wearer to grip the toes.
  • the multiple first transverse grooves 81, 82 and second transverse grooves 83 to 85 are curved to fit the joints of the big toe and other toes. Therefore, the first transverse grooves 81, 82 and the second transverse grooves 83 to 85 can easily conform to the positions of the toe joints, making it easier for the wearer to grip the toes.
  • the shoe 1 has first transverse grooves 81, 82 formed in the thumb rest 80A, and second transverse grooves 83-85 formed separately from the first transverse grooves 81, 82 in the other toe rest 80B, but this is just one example.
  • FIG. 8 is a plan view of an outsole 70 according to another embodiment.
  • the outsole 70 may have lateral grooves 181-183 formed across the thumb placement portion 80A and the other finger placement portion 80B on the third upper surface 76B.
  • the lateral grooves 181-183 may be straight rather than curved.
  • the lateral grooves 181-183 are formed such that the widths W11-W13 of the lateral grooves 181-183 in the front-rear direction gradually increase toward the tip of the toe.
  • FIG. 9 is a side view of the outsole 70 according to another embodiment shown in FIG. 8, seen from the front.
  • the lateral grooves 181-183 are formed with an inclination such that the depth D11b-D13b on the inner side of the toe in the width direction is shallower than the depth D11a-D13a of the lateral grooves 181-183 on the outer side of the toe in the width direction. This makes it difficult for force to escape to the outer side in the width direction of the foot when the wearer bends the big toe, making it easier to bend the big toe.
  • the multiple lateral grooves 181 to 183 are formed so that the depth of each groove increases toward the inside in the width direction of the toe. This allows the wearer to bend their big toe more easily, which in turn tends to activate larger muscles in the foot than the muscles that activate the other toes.
  • the shoe 1 is described as a golf shoe, but this is merely an example, and the shoe 1 may be any footwear.
  • the shoe 1 may be a sneaker or other footwear suitable for paved surfaces.
  • FIG. 10 is a side view of an outsole 270 according to another embodiment 2.
  • the outsole 270 is used as the sole of a sneaker.
  • the outsole 270 according to another embodiment 2 does not have spikes or force pads on the lower surface 270A.
  • the upper surface 270B of the outsole 270 for sneakers is flatter than the upper surface 70B of the outsole 70 according to the above embodiment used for golf shoes, and has a smaller upward inclination at the rear.
  • first upper surface 272B which is the outer side of the first support part 272 on which the heel of the foot rests
  • second upper surface 274B which is the outer side of the second support part 274 on which the ball of the big toe and the ball of the little toe rest
  • third upper surface 276B which is the outer side of the third support part 276 on which the toes of the foot rest.
  • the outsole 270 of another embodiment 2 applied to sneakers has a first lower surface 271, a second lower surface 273, and a third lower surface 275.
  • the third lower surface 275 which is the back side of the third support portion 276, is formed flat so that it is positioned higher than the second lower surface 273, which is the back side of the second support portion 274, by a step portion 277.
  • the outsole 270 of another embodiment 2 applied to sneakers may also be configured to have multiple lateral grooves, as shown in FIG. 5 or FIG. 8.
  • the present invention is applicable to shoe structures that include outsoles. Specifically, the present invention is applicable to shoes used for specific purposes, such as golf shoes, as well as everyday shoes, such as sneakers.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

La présente invention concerne une structure de chaussure qui facilite le pliage des orteils d'un utilisateur tout en portant une chaussure.　Une structure de chaussure selon la présente invention comprend une semelle d'usure, dans laquelle, sur la semelle d'usure, une première surface inférieure sur l'envers d'une partie où le talon du pied est placé et une deuxième surface inférieure sur l'envers d'une partie où la plante interne et la plante externe du pied sont placées sont formées à fleur, et une troisième surface inférieure sur l'envers d'une partie où les orteils du pied sont placés est formée à plat, avec une partie étagée, de façon à être positionnée plus haut que la deuxième surface inférieure.
PCT/JP2022/043227 2022-11-22 2022-11-22 Structure de chaussure WO2024111066A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/JP2022/043227 WO2024111066A1 (fr) 2022-11-22 2022-11-22 Structure de chaussure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2022/043227 WO2024111066A1 (fr) 2022-11-22 2022-11-22 Structure de chaussure

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WO2024111066A1 true WO2024111066A1 (fr) 2024-05-30

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5176752U (fr) * 1974-12-12 1976-06-17
JPS5451657A (en) * 1977-09-30 1979-04-23 Mitsuma Kk Method of making shoes by injection molding
JPH08164002A (ja) * 1994-12-12 1996-06-25 Tsutomu Yamana 健康履物
JP2001030374A (ja) * 1999-07-26 2001-02-06 Kohshin Rubber Co Ltd 防滑性射出成形長靴
JP2002153302A (ja) * 2000-11-22 2002-05-28 Kanae Sakamoto 健康履物
JP2009273863A (ja) * 2008-04-17 2009-11-26 Masahiko Sekiguchi 履き物、及び履き物に用いられる支持部

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5176752U (fr) * 1974-12-12 1976-06-17
JPS5451657A (en) * 1977-09-30 1979-04-23 Mitsuma Kk Method of making shoes by injection molding
JPH08164002A (ja) * 1994-12-12 1996-06-25 Tsutomu Yamana 健康履物
JP2001030374A (ja) * 1999-07-26 2001-02-06 Kohshin Rubber Co Ltd 防滑性射出成形長靴
JP2002153302A (ja) * 2000-11-22 2002-05-28 Kanae Sakamoto 健康履物
JP2009273863A (ja) * 2008-04-17 2009-11-26 Masahiko Sekiguchi 履き物、及び履き物に用いられる支持部

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