JP5007873B2 - Cushioned shank and shoes with the shank inserted - Google Patents

Description

  The present invention relates to a shank with a cushion function and a shoe into which the shank is inserted. More particularly, the present invention extends from the talus, scaphoid, medial wedge bone to the first metatarsal and to the first metatarsal, and from the radius nodules through the cuboid to the fifth metatarsal. The present invention relates to a shank that supports an arch composed of a lateral arch and an anterior arch that extends from a first metatarsal to a fifth metatarsal and that has a cushion function in a buttock-corresponding portion, and a shoe in which the shank is inserted.

  The term “anatomical structure” used in the present invention refers to a medial arch (arch arch) that extends beyond the talar, scaphoid, medial cuneiform bone to the first metatarsal bone, and a cuboid from the radial nodule. It is defined as a structure corresponding to a lateral arch extending to the fifth metatarsal and an anterior arch (crossing arch) extending from the first metatarsal to the fifth metatarsal.

  Shank is a reinforcing core that is inserted between the midsole and outsole of the shoe arch (corresponding to the arch of the foot) and is used to support the load of the arch of the foot and assist walking. Various materials having various functions and structures have been proposed. In the old days, birch bark and bamboo were used, but today steel or hard plastic is the mainstream.

  Conventional shanks do not focus on the anatomical three-dimensional structure of the arch, but are intended to reinforce the arch primarily with a single flat plate. Therefore, there is no function to reinforce the remaining arches, that is, the outer arch and the front arch, and there is no effect to reinforce the “spring effect” which is the original function of the arch. In addition, since the conventional shank is a single structure flat plate made of a material having the same hardness, the heel portion can absorb a load larger than the weight applied to the heel when the heel contacts the ground during walking. There is a disadvantage that it can not.

  For example, Patent Document 1 describes a shank made of a hard material made of a thermoplastic resin such as a vinyl chloride resin, a vinyl acetate resin, an ABS resin, or a urethane-based thermoplastic elastomer (TPU). Is unclear.

  Patent Document 2 describes a shank made of a resin plate such as vinyl chloride resin or ABS resin. However, this shank is a structure that reinforces only the sole tread, that is, the inner arch.

Patent Document 3 describes that two convex ribs extending to a midfoot portion are formed on a sole plate made of a hard resin, and the shank effect by the ribs is achieved. However, such two convex ribs do not function to reinforce the inner arch, the outer arch, and the front arch because of their structure.
JP-A-2005-473 JP 2005-287565 A JP-A-2005-95483

  The problem to be solved by the invention is that the structure of the shank inserted between the midsole and outsole of the shoe corresponds to the anatomical structure of the arch and is beyond the talus, scaphoid and medial wedge bones. An arch comprising an inner arch extending to one metatarsal, an outer arch extending from the radius nodules through the cubic bone to the fifth metatarsal, and an anterior arch extending from the first metatarsal to the fifth metatarsal And providing a cushion function to the buttock-corresponding portion so that a load larger than the weight applied to the heel when the heel is grounded during walking can be absorbed by the heel.

  Another problem to be solved by the invention is that the structure of the shank inserted between the midsole and the outsole of the shoe corresponds to the anatomy of the arch and goes beyond the talus, scaphoid and medial cuneiform bone. From the medial arch extending to the first metatarsal, the lateral arch extending from the radius nodules through the cubic bone to the fifth metatarsal, and the anterior arch extending from the first metatarsal to the fifth metatarsal Supporting the arch, and providing a cushion function to the buttock-corresponding portion so that a load larger than the weight applied to the heel when the heel touches the ground during walking can be absorbed by the heel, and shoes This is to achieve the air conditioning effect in the shoe that flows the air and moisture inside and exhausts it to the outside of the shoe.

  When a person stands upright, the body is supported by the two arches of each of the fulcrum at the base of the first heel (thumb), the base of the fifth heel (little finger), and the heel. ing. Each arch has a spring function that absorbs or disperses the impact received when the foot touches the ground to help and reinforce the body's function during standing, walking, and running.

  FIG. 3 is a conceptual diagram for schematically explaining the structure of the arch. FIG. 3A shows an inner arch 20 that extends beyond the talus, scaphoid, medial cuneiform bone to the first metatarsal bone and an outer arch 21 that extends from the radius nodules through the cubic bone to the fifth metatarsal bone. FIG. 6 is a side view schematically showing the anterior arch 22 extending from the first metatarsal bone to the fifth metatarsal bone on the skeleton of the foot. FIG. 3B is a conceptual diagram schematically showing an arch. FIG. 3C is a perspective view in which the inner arch 20, the outer arch 21, and the front arch 22 are schematically written on the sole of the foot.

  The inner arch 20 is an arch extending from the first heel (thumb) to the rib supporting the scaphoid, so-called “arch arch”, and is the most important part of the arch. The ideal shoe has the arch part of the sole aligned perfectly with the arch of the sole, and in accordance with upright, walking, and running movement, the arch of the shoe sole follows the stretching movement of the arch of the sole. The arch part must be able to cope. A shank inserted between the outsole and the midsole if the material of the arch of the sole of the sole is weakened or deteriorated and cannot support the load due to weight shift due to upright, walking or running movement However, it is preferable to have a structure that can be supported and reinforced from below.

  The outer arch 21 is an arch that extends from the radius nodules through the cubic bone to the fifth metatarsal bone. When a person walks and runs, first, the heel lands, moves along the outer arch, moves to the center of gravity toward the fifth heel (little finger), and then moves along the transverse arch from the fifth heel (little finger). It moves to the 1st (thumb) side, and finally the first heel (thumb) is kicked up to move forward. Therefore, if this outer arch is fully extended, the force of the spring will weaken, and the center of gravity cannot be moved to the first heel (thumb) side, making it impossible to balance the body and walking. To come. A shank inserted between the outsole and midsole if the material of the outer arch part of the sole is weakened or deteriorated and cannot support the load due to weight shift due to upright, walking or running movement However, it is preferable to have a structure that can be supported and reinforced from below.

  The front arch 22 is an arch that extends from the base of the first heel (thumb) to the base of the fifth heel (little finger). When the front arch is in a normal state, the second ridge, the third ridge, and the fourth ridge float to form an arch. However, when wearing shoes for a long time, the metatarsal bones open and the foot shape may be deformed into a so-called “extended foot”, the front arch may be crushed and become painful or unable to walk. Therefore, it is preferable that the shape of the front arch is given to the shank structurally and the open leg is returned to the original arch.

  Considering the ideal function of the shank described above, the shank is not a simple single plate as in the prior art, but is branched from the buttock corresponding part into the inner arch 20 corresponding part and the outer arch 21 corresponding part, It is understood that it is preferable to have a raised structure along the 22 corresponding portion.

  Moreover, it is preferable that at least one shank through hole is formed in the shank-corresponding portion of the shank in the thickness direction of the coral-corresponding portion. Further, in order to provide a cushion function to the shank heel corresponding portion, it is preferable to provide at least one weakened portion of the shank heel corresponding portion.

In order to enhance the cushioning effect, it is preferable that the weakened portion has at least one groove having a trapezoidal cross section that is formed in the thickness direction of the heel-corresponding portion and that extends in the outsole direction. Preferably, the at least one groove communicates with at least one shank through-hole formed in the thickness direction of the shank-corresponding portion of the shank. With such a configuration, the air in the shoe flows upward through the through hole due to the cushioning action of the heel-corresponding portion every time it moves, such as walking and running, so that the air conditioning effect is effective.

  The shank having the above-described structure is used by inserting it between the outsole and the midsole. At this time, air and moisture are passed between the shank corresponding part of the shank and the back surface of the midsole corresponding part. It is preferable to insert a moisture-permeable sheet that does not allow water to pass so as to cover the groove serving as the weakened portion. This prevents water from entering the midsole even when walking in the rain or entering a puddle during walking, while sweating in the shoes during walking is mainly moisture and warm. The resulting air is permeated toward the midsole.

  Next, an example of the structure of the midsole will be described. It is preferable to form a ventilation groove on the upper surface of the midsole from the toe corresponding part of the midsole toward the heel corresponding part.

  The shape and structure of the ventilation groove are not particularly limited. For example, at least one ventilation groove is formed in the toe-corresponding portion in the width direction of the midsole, and this is communicated with the ventilation groove drilled from the toe-corresponding portion of the midsole toward the heel-corresponding portion. May be. With this structure, the ventilation efficiency in the length direction of the midsole is expanded.

  Furthermore, a midsole through-hole is drilled in the thickness direction of the heel-corresponding portion of the midsole in the heel-corresponding portion of the ventilation groove formed from the toe-corresponding portion of the midsole toward the heel-corresponding portion. It is preferable that the sole through hole communicates with the shank through hole communicating with the groove formed in the thickness direction of the flange-corresponding portion of the shank and the groove. With this structure, during walking, air and sweat that permeate from the shank through-hole communicating with the groove of the shank and the groove through the moisture-permeable sheet in the thickness direction of the toe-corresponding portion of the midsole during walking. It penetrates further upward from the midsole through-hole drilled in the direction.

  Further, it is preferable that one or more insole through holes are formed in the thickness direction of the insole, and one or more insole through holes are formed in the thickness direction of the insole. By adopting such a structure, in order from the outsole toward the upper, the cross-section expanded in the outsole direction formed in the thickness direction of the heel-corresponding portion in the heel-corresponding portion of the shank has a trapezoidal groove, A shank through-hole formed in the heel-corresponding portion in the thickness direction of the heel-corresponding portion, communicating with the groove, a ventilation groove formed from the toe-corresponding portion of the midsole toward the heel-corresponding portion, and a toe-corresponding portion of the midsole A midsole through hole drilled in the thickness direction and communicated with the ventilation groove, an insole through hole drilled in the insole, and an insole through hole drilled in the insole communicated with each other. It is possible to achieve an air conditioning effect in the shoe that causes the moisture to flow and exhaust the outside of the shoe.

  The shank of the present invention can be produced from a thermoplastic resin such as polyvinyl chloride, ABS resin or vinyl acetate resin, or a thermoplastic elastomer such as urethane thermoplastic elastomer. The shank hardness is preferably in the range of 80-90.

  Members other than the shank, that is, the outsole, midsole, insole, insole, upper, moisture-permeable sheet and the like are not particularly limited, and materials used in the industry can be used.

Therefore, the above problems can be solved by the means described in the following items.
1. It consists of a resin plate that is integrally molded from the heel-corresponding part to the toe-corresponding part. The heel-corresponding part has a cushion function structure, and the front end part of the heel-corresponding part to the toe-corresponding part has a shank function. A cushioned shank inserted between the heel and the midsole; An inner arch-corresponding portion extending from the front end portion of the heel-corresponding portion to the toe-corresponding portion and extending to the first metatarsal bone over the talus, scaphoid bone, and inner wedge-shaped bone; The anterior arch corresponding part extending from the first metatarsal to the fifth metatarsal is made into a raised structure part.
B. Providing at least one shank through-hole in the thickness direction of the flange-corresponding portion in the flange-corresponding portion of the shank;
C. (D) forming at least one groove having a trapezoidal cross section that is widened in the outsole direction across the width direction of the flange-corresponding portion at the bottom of the shank through-hole in the flange-corresponding portion of the shank; A shank with a cushion function, wherein the shank through hole and the groove are communicated.

2. In said 1 item | term, the hardness of the shank with a cushion function shall be 80-90.

3. A shoe including an outsole, a midsole, an insole, an insole, and an upper as main members, wherein the shank with a cushion function described in 1 or 2 is inserted between the outsole and the midsole.

4). 4. The shoe according to claim 3, wherein the shank with a cushion function is passed through a moisture-permeable sheet that passes air and moisture between the heel-corresponding portion of the shank and the back surface of the heel-corresponding portion of the midsole and does not allow water to pass. Insert between the outsole and midsole.

5). 5. The shoe according to claim 3, wherein a horseshoe-shaped ventilation groove is formed in a toe-corresponding portion on the upper surface of the midsole, and a widthwise ventilation groove is formed in communication with the horseshoe-shaped ventilation groove in the width direction of the toe-corresponding portion. Further, a longitudinal ventilation groove is formed from the toe-corresponding portion of the midsole toward the heel-corresponding portion, and a midsole through hole is formed in the longitudinal-direction ventilation groove in the thickness direction at the heel-corresponding portion, and the horseshoe shape The ventilation groove, the width direction ventilation groove, the longitudinal direction ventilation groove and the midsole through hole communicate with each other, and the midsole through hole communicates with the shank through hole and the trapezoidal groove.

6). In any one of the above items 3 to 5, one or more insole through holes are formed in the thickness direction of the insole, and one or more insole through holes are formed in the thickness direction of the insole.

  According to the first aspect of the present invention, the resin plate is integrally formed from the heel-corresponding portion to the toe-corresponding portion, the heel-corresponding portion has a cushion function structure, and the front-end portion of the heel-corresponding portion is compatible with the toes. In a shank with a cushioning function that has a shank function up to a part and is inserted between an outsole and a midsole; An inner arch-corresponding portion extending from the front end portion of the heel-corresponding portion to the toe-corresponding portion and extending to the first metatarsal bone over the talus, scaphoid bone, and inner wedge-shaped bone; Branching to the outer arch corresponding part extending through the fifth metatarsal and passing through the first metatarsal to the fifth metatarsal, and forming the front arch corresponding part as a raised structure part. (C) providing at least one shank through hole in the thickness direction of the flange-corresponding portion in the flange-corresponding portion of the shank; At least one groove having a trapezoidal cross section that is widened in the outsole direction across the width direction of the heel-corresponding portion in the bottom portion of the shank through-hole in the heel-corresponding portion of the shank; The shank through-hole and the groove are communicated so that the shank corresponds to the anatomical structure of the arch, and the inner arch, the outer arch, and the front arch are supported and reinforced, and cushioned at the buttock corresponding portion. Because it has a function, it can absorb a load larger than the weight applied to the heel when the heel touches the ground during exercise, and the groove receives the weight to open the expanding portion. Since the angle becomes larger, the cushioning effect is improved, and the air in the shoe flows upward through the hole and the groove communicating with the hole by the cushioning action of the heel-corresponding part every time it moves, such as walking and running. Therefore, the air conditioning effect is effective.

  According to the invention described in claim 2, since the hardness of the shank with a cushion function is set to 80 to 90, an appropriate shank effect and durability can be obtained.

According to the invention described in claim 3, the resin plate is integrally formed from the heel-corresponding portion to the toe-corresponding portion, the heel-corresponding portion has a cushion function structure, and the toe-tip is supported from the front end portion of the heel-corresponding portion. In a shank with a cushion function that has a shank function up to the part and is inserted between the outsole and the midsole. A medial arch-corresponding portion extending from the front end of the heel-corresponding portion toward the toe-corresponding portion of the shank (1) over the talus, scaphoid, medial wedge-like bone to the first metatarsal; To the outer arch corresponding part extending from the first metatarsal to the fifth metatarsal, the anterior arch corresponding part extending from the first metatarsal to the fifth metatarsal is made a raised structure part, and . The shank-corresponding portion of the shank is provided with at least one shank through hole in the thickness direction of the corrugation-corresponding portion,
C. At least one groove having a trapezoidal cross section that is widened in the outsole direction across the width direction of the heel-corresponding portion in the bottom portion of the shank through-hole in the heel-corresponding portion of the shank; The shank through-hole and the groove are communicated so that the shank corresponds to the anatomical structure of the arch, and the inner arch, the outer arch, and the front arch are supported and reinforced, and cushioned at the buttock corresponding portion. Because it has a function, it can absorb a load larger than the weight applied to the heel when the heel touches the ground during exercise, and the groove receives the weight to open the expanding portion. Since the angle becomes larger, the cushioning effect is improved, and the air in the shoe flows upward through the hole and the groove communicating with the hole by the cushioning action of the heel-corresponding part every time it moves, such as walking and running. Therefore, the air conditioning effect is effective.

  According to the invention described in claim 4, the moisture permeable sheet that allows air and moisture to pass between the heel-corresponding portion of the shank and the back surface of the heel-corresponding portion of the midsole does not pass through the cushion-equipped shank. Since it is inserted between the outsole and the midsole, even if walking in the rain or entering a puddle during walking, water is prevented from entering the midsole, while walking, Moisture and warm air mainly composed of sweat generated inside are permeated toward the midsole.

  According to the invention described in claim 5, a horseshoe-shaped ventilation groove is formed in the toe-corresponding portion on the upper surface of the midsole, and the widthwise ventilation groove is communicated with the horseshoe-shaped ventilation groove in the width direction of the toe-corresponding portion. And further forming a longitudinal ventilation groove from the toe-corresponding portion of the midsole toward the heel-corresponding portion, and drilling a midsole through hole in the longitudinal direction in the thickness direction at the heel-corresponding portion, Since the horseshoe-shaped ventilation groove, the width direction ventilation groove, the longitudinal direction ventilation groove and the midsole through hole communicate with each other, the midsole through hole communicates with the shank through hole and the cross section of the trapezoidal groove, respectively. When walking, air and sweat that permeate from the groove provided in the thickness direction of the heel corresponding part of the shank drill through the moisture permeable sheet toward the thickness direction of the toe corresponding part of the midsole. From the midsole through hole It can be transmitted upward al.

  According to the invention described in claim 6, since one or more insole through holes are formed in the thickness direction of the insole, and one or more insole through holes are formed in the thickness direction of the insole, In order from the outsole toward the upper, the cross-section expanded in the direction of the outsole drilled in the thickness direction of the heel-corresponding portion in the shank heel-corresponding portion, the thickness of the heel-corresponding portion in the shank heel-corresponding portion A shank through-hole drilled in the vertical direction and communicating with the groove, a ventilation groove formed from the toe-corresponding portion of the midsole toward the heel-corresponding portion, and drilled in the thickness direction of the toe-corresponding portion of the midsole A midsole through hole communicating with the ventilation groove, an insole through hole drilled in the insole, and an insole through hole drilled in the insole communicate with each other to flow air and moisture inside the shoe and exhaust it to the outside of the shoe Shoe air conditioning effect It can be.

Hereinafter, the best mode for carrying out the invention will be described as an example.

FIG. 1 is an explanatory view showing the structure of a shank with a cushion function according to an embodiment of the present invention. 1-A, 1-B, and 1-C are a side view, a top view, and a cross-sectional view, respectively.

  A shank with a cushioning function having an average thickness of 3 mm and a hardness of 85 was manufactured using a polyvinyl chloride resin. As shown in the side view of FIG. 1-A, the shank 1 with a cushioning function of the present invention has a shank functional part 2 and a cushioning functional part 3 formed integrally. The cushion function portion 3 has a size corresponding to a heel. A raised structure 5 is formed along the front arch 22 (transverse arch) (FIG. 3). Three shank through holes 23 are formed in the bottom surface of the cushion function portion 3 in the thickness direction of the cushion function portion 3. Further, as shown in FIGS. 1-A and 1-C, at least the groove 4 having a trapezoidal cross section that expands in the thickness direction of the heel-corresponding portion and in the outsole direction is formed in the heel-corresponding portion of the shank 1. One is drilled. As described above, since the groove 4 has a trapezoidal shape that expands downward, the angle at which the expanded portion of the groove 4 opens upon receiving the weight increases, so that the cushioning effect is improved. Further, as shown in FIGS. 1A and 1C, the shank through hole 23 and the groove 4 are in communication with each other.

  FIG. 1-B is a top view of the shank 1 with a cushion function of the embodiment. As shown in FIG. 1-B, the shank portion extends from the front end portion of the heel-corresponding portion toward the toe-corresponding portion, extending beyond the talus, scaphoid bone, and inner wedge bone to the first metatarsal bone. It is branched into two parts: an arch-corresponding part 6 and an outer arch-corresponding part 7 extending from the radius nodules through the cubic bone to the fifth metatarsal bone. Thus, by the structure which branched the shank part into two, each part supports and reinforces an inner arch and an outer arch independently, respectively.

  FIG. 1-C is a partial cross-sectional view showing a state where the shank 1 with a cushion function of the embodiment is inserted between an outsole 8 and a midsole 9 of an actual shoe. Three midsole through holes 11 are formed in the heel-corresponding portion of the midsole 9 in the thickness direction. Reference numeral 10 denotes a moisture permeable sheet that allows air and moisture to permeate but does not allow water to permeate. The three shank through holes 23 formed in the thickness direction of the cushion function portion 3 and the groove 4 communicating with the shank through hole 23 are formed in the heel corresponding portion of the midsole 9 through the moisture permeable sheet 10. It communicates with the three drilled through midsole holes 11.

  FIG. 2 is an exploded view illustrating the state in which the shank 1 with a cushion function is inserted between the outsole 8 and the midsole 9 of the shoe. As shown in FIG. 2C, a horseshoe-shaped horseshoe-shaped ventilation groove 12 is formed on the upper surface of the midsole 9 at the toe-corresponding portion. Further, three width direction ventilation grooves 13 are formed in the width direction of the toe corresponding portion so as to communicate with the horseshoe-shaped ventilation groove 12. Further, one longitudinal ventilation groove 14 is formed from the toe-corresponding portion of the midsole 9 toward the heel-corresponding portion. In the longitudinal ventilation groove 14, three midsole through holes 11 are formed in the thickness direction at the heel-corresponding portion. Therefore, the horseshoe-shaped ventilation groove 12 and the widthwise ventilation groove 13 formed on the upper surface of the midsole 9 are in communication with the longitudinal ventilation groove 14, and further, three holes drilled in the heel-corresponding portion of the midsole 9. Through the midsole through hole 11, and through the moisture permeable sheet 10, the three shank through holes 23 formed in the cushion function portion of the shank 1, and the shank through hole 23 and the groove 4 communicate with each other. It has a structure.

  FIG. 2B is a perspective view of the insole 15. FIG. 2A is a partially cutaway view of the upper 17. As shown in FIG. 2B, the midsole 15 has two midsole through holes 16 formed therein. As shown in FIG. 2A, the insole 18 has several insole through holes 19 formed therein.

  Therefore, the shank 1 with a cushion function of the present invention is inserted between the outsole 8 and the midsole 9 through the moisture permeable sheet 10, and assembled with the insole 15 and the upper 17 in order, and the insole 18 is attached to the shoe. When worn inside, the three shank through holes 23 formed in the cushion function portion of the shank 1 and the groove 4 having a structure communicating with the shank through hole 23 are provided via the moisture permeable sheet 10. The midsole 9 communicates with the three midsole through holes 11 formed in the heel-corresponding portion, and further, the horseshoe-shaped ventilation groove 12, the widthwise ventilation groove 13, and the ventilation formed on the upper surface of the midsole 9. The groove 14 communicates, and further communicates with two insole through-holes 16 formed in the insole 15 and several insole through-holes 19 formed in the insole 18 so that air conditioning is provided in the shoe. Ring system is formed, walking, refluxed warm air and moisture generated in the shoe during running, exhausted to the outside of the shoe.

  The shank with a cushion function of the present invention has a resin plate serving as a shank with a cushion function extending from the front end portion of the heel-corresponding portion toward the toe-corresponding portion over the talus, scaphoid bone, and inner wedge-shaped bone. The inner arch-corresponding portion 6 that extends to the bone and the outer arch-corresponding portion 7 that extends from the radius nodules through the cubic bone to the fifth metatarsal are branched and extended from the first metatarsal to the fifth metatarsal. The front arch corresponding portion 2 is formed in a raised structure, and at least one shank through hole 23 is provided in the thickness direction of the flange corresponding portion in the flange corresponding portion of the shank. At least one groove 4 having a trapezoidal cross-section expanded in the outsole direction is formed in the bottom of the shank through-hole 23 in the width direction of the flange-corresponding portion so that the shank through-hole 23 and the groove communicate with each other. The shank 1 Since it corresponds to the anatomical structure of the arch, the inner arch 20, the outer arch 21 and the front arch 22 are supported and reinforced, and the buttock corresponding part has a cushion function, so that Sometimes, a load larger than the weight applied to the heel when the heel contacts the ground can be absorbed by the heel.

  Further, the shank 1 with a cushion function of the present invention is inserted between the outsole 8 and the midsole 9 through the moisture permeable sheet 10, and assembled with the insole 15 and the upper 17 in order, and the insole 18 is attached to the shoe. When worn inside, the three shank through-holes 23 formed in the cushion function portion of the shank 1 and the groove 4 having a structure communicating with the shank through-hole 23 are provided via the moisture-permeable sheet 10. The midsole 9 communicates with the three midsole through holes 11 formed in the heel-corresponding portion, and further has a horseshoe-shaped ventilation groove 12, a widthwise ventilation groove 13 and a ventilation groove 14 formed on the upper surface of the midsole 9. Is further communicated with two insole through holes 16 drilled in the insole 15 and several insole through holes 19 drilled in the insole 18 for air conditioning in the shoe. Stem is formed, walking, refluxed warm air and moisture generated in the shoe during running, exhausted to the outside of the shoe.

  Therefore, the shank with a cushion function of the present invention can be applied to a wide variety of shoes without being limited to men's leather shoes, women's leather shoes, various sports shoes, jogging shoes, working shoes, etc., and contributes to the shoe manufacturing industry. Can do.

It is explanatory drawing which shows the structure of the shank with a cushion function by the Example of this invention. It is a side view of an Example. It is a top view of an Example. It is sectional drawing of an Example. It is the exploded assembly figure which decomposed | disassembled the state which inserted the shank with a cushion function of an Example in shoes. It is a partially broken view of the upper. It is a partially broken view of the perspective view upper of a midsole. It is a perspective view of a mid sole. It is a perspective view of a moisture-permeable sheet. It is a perspective view of a shank. It is a perspective view of an outsole. It is a conceptual diagram which shows an arch structure. It is a side view which shows the concept of an arch structure. It is a conceptual diagram which shows an arch structure. It is the conceptual diagram seen from the upper surface of the arch structure.

DESCRIPTION OF SYMBOLS 1 Shank with cushion function 2 Shank function part 3 Cushion function part 4 Groove 5 Elevated structure part 6 Inner arch corresponding part 7 Outer arch corresponding part 8 Outsole 9 Mid sole 10 Moisture permeable sheet 11 Mid sole through-hole 12 Horseshoe-shaped ventilation groove 13 Width direction ventilation groove 14 Longitudinal direction ventilation groove 15 Middle bottom 16 Middle bottom through hole 17 Upper 18 Insole 19 Insole through hole 20 Inner arch 21 Outer arch 22 Front arch 23 Shank through hole

Claims (6)

It consists of a resin plate molded integrally from the heel-corresponding part to the toe-corresponding part, the heel-corresponding part has a cushion function structure, and the front end part of the heel-corresponding part to the toe-corresponding part has a shank function. A cushioned shank (1) inserted between the lu (8) and the midsole (9) ;
I. An inner arch-corresponding portion (6) extending from the front end of the heel-corresponding portion to the toe-corresponding portion, extending the shank (1) beyond the talus, scaphoid, inner wedge bone to the first metatarsal bone; Bifurcate to the outer arch corresponding part (7) extending from the radius nodules through the cubic bone to the fifth metatarsal, and the front arch corresponding part extending from the first metatarsal to the fifth metatarsal is raised What was part (5) ,
B. Providing at least one shank through hole (23) in the thickness direction of the flange corresponding portion in the flange corresponding portion of the shank (1) ;
C. At least one groove (4) having a trapezoidal cross section that extends in the outsole direction across the width direction of the heel-corresponding portion at the bottom of the shank through hole (23) in the heel-corresponding portion of the shank (1 ). Drilling, and
D. A shank with a cushion function, wherein the shank through hole (23) and the groove (4) are communicated. The shank with a cushion function according to claim 1, wherein the hardness of the shank with a cushion function (1) is 80 to 90. The cushion function according to claim 1 or 2, wherein the shoe includes an outsole (8), a midsole (9), an insole (15), an insole (18), and an upper (17) as main members. A shoe with an attached shank (1) inserted between the outsole (8) and the midsole (9). Moisture permeable sheet (10) that allows air and moisture to pass through the cushion-equipped shank (1) between the heel-corresponding portion of the shank (1) and the back surface of the heel-corresponding portion of the midsole (9). The shoe according to claim 3 , wherein the shoe is inserted between the outsole (8) and the midsole (9). A horseshoe-shaped ventilation groove (12) is formed in the toe-corresponding portion on the upper surface of the midsole (9), and the widthwise ventilation groove (13) is communicated with the horseshoe-shaped ventilation groove (12) in the width direction of the toe-corresponding portion. Further, a longitudinal ventilation groove (14) is formed from the toe-corresponding portion of the midsole (9) toward the heel-corresponding portion, and the longitudinal-direction ventilation groove (14) is formed in the thickness direction at the heel-corresponding portion. Drilling a midsole through hole (11) and communicating with the horseshoe-shaped vent groove (12), the widthwise vent groove (13), the longitudinal vent groove (14) and the midsole through hole (11), The shoe according to claim 3 or 4 , wherein the midsole through hole (11) communicates with the shank through hole (23) and a groove (4) having a trapezoidal cross section. Claim that one or more insole through holes (16) are formed in the thickness direction of the insole (15), and one or more insole through holes (19) are formed in the thickness direction of the insole (18). Item 6. The shoe according to any one of Items 3 to 5 .

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