JPH0747003A - Shoe bottom - Google Patents

Abstract

PURPOSE: To support feet appropriately, to return energy to the user by absorbing impact, and to maintain flexibility and lightweightness. CONSTITUTION: A sports shoe 10 is provided with a sole having a plurality of elastic arched portions below its portions supporting the weight of the foot, i.e., its heel portion, mid-foot portion 12, and toe portion, and each of the arched portions has at least one pair of bases and a dented arched surface pointed down which extends between the bases, with an almost flat outsole portion 13 extending below the bases and attached to the bases.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an athletic shoe, and more particularly to a sole of an athletic shoe having a bendable arch portion.

[0002]

A large number of athletic shoes, namely athletic shoes, are widely known.

[0003]

The design of athletic shoes requires consideration of a number of complex biomechanical principles associated with proper foot support and weight bearing structures. Such athletic shoes are required to function properly even when the user exerts a heavy pressure on the shoe during an intense athletic activity.
In addition to providing proper foot support, the athletic shoe must also have the advantage that the athletic shoe absorbs shock and returns energy to the user. The athletic shoe must fulfill the above-mentioned objectives and must remain flexible and lightweight. It is not easy to meet all of these somewhat competing factors in a single shoe design.

[0004]

SUMMARY OF THE INVENTION The present invention provides a sole for an athletic shoe that absorbs impact and returns energy to the user while maintaining flexibility and lightness. The shoe sole of the present invention has a part for supporting the weight of the foot, that is, a heel part, a middle foot part, and an insole part provided with elastic arch parts on the toe part. The outer bottom is attached to the arch,
A skid resistance tread is provided on the bottom surface of the outer bottom. The bottom material has been substantially removed between the arches to reduce weight. The arch portion acts like a spring when the force is exerted by the foot to absorb shock and return energy to the leg when the force exerted is reduced. If desired, wedge-shaped notches or other shaped removals may be provided on the underside of each arch projection to facilitate arching without the legs of the arch moving. Can be generated.

The invention will be described in more detail below in connection with the illustrated embodiments shown in the accompanying drawings.

[0006]

1 and 2 of the drawings, athletic shoes 10
Has an upper portion 11, an inner bottom portion 12 and an outer bottom portion 13. When the athletic shoe 10 is assembled, the outer sole portion 13 has the inner sole portion 12
And the insole 12 is attached to the top 11.
If desired, the insole can be inserted into the athletic shoe.

The insole 12 is an elongated body 1 extending below the foot.
5, the elongate body 15 comprises a heel portion 16, an instep portion 17, a midfoot portion 18 and a toe portion 19. The elongated body 15 has a top surface 20, which in the illustrated embodiment is a raised outer edge 21, 22 and a generally flat bottom surface 23 (FIG. 3) and a right edge 2.
4 and a left edge 24 '.

Referring to FIG. 3, a pair of arch portions 25,
26 extends downwardly from the heel portion 16 of the elongated body 15. The arch 25 is located at the rear of the heel 16 and has a curved rear surface 27. The arch portion 26 is separated from the arch portion 25 in the longitudinal direction by a groove 28. The arch portion 25 has a pair of base portions 29 and 30, and these base portions 29 and 30 have a substantially flat bottom surface and a base portion 2.
There is an upwardly curved concave arch surface 31 extending laterally between 9 and 30.

The arch portion 36 is the middle foot portion 1 of the elongated body 15.
8 extends downward. The arch portion 36 of the middle foot portion 18 includes the base portion 37 adjacent to the left edge portion 24 ′ of the bottom surface 23, and the bottom surface 2
3 and a base portion 38 adjacent to the right edge portion 24. In the particular embodiment shown, the arch 36 includes a base 3
A laterally extending notch 39 is provided which divides 8 into a front portion 38a and a rear portion 38b. However, this notch 39 can be omitted if desired. The insole 12 shown in FIG. 2 is for the left foot, and the front part a and the rear part 3 of the two bases 38 are provided in the part of the insole 12 that supports the base of the toes.
8b is located. The concave arch surface 40 is the base 3
It extends laterally between 7, 38 and also intersects the notch 39.

The arch portion 42 extends downwardly from the toe portion 19 of the elongated body 15. Arch part 4 of toe part 19
2 has a right base portion 43, a left base portion 44 and an intermediate base portion 45 which are adjacent to the right edge portion 24 and the left edge portion 24 ′ of the main body 15. A concave arch surface 46 extends between the bases 43, 45 and a concave arch surface 47 extends between the bases 45, 44. The arch portion 42 of the toe portion 19 and the arch portion 36 of the middle foot portion 18 are separated by a groove 48.

The two concave arch surfaces 46, 47 provide the two arches of the toe portion 19. If desired, only one arch can be provided on the toe portion 19 based on the particular shoe kinematics for which the midfoot portion 18 is designed.

A right rib 51 and a left rib 52 extending in the longitudinal direction.
It is attached between the arch portion 26 of the heel portion 16 and the arch portion 36 of the middle foot portion 18. In the illustrated embodiment,
The front ends of the right rib 51 and the left rib 52 of the middle foot portion 18 are formed together with the arch portion 36.
And the rear end portion of the left rib 52 is a portion 5 that extends laterally outward.
It ends at 3,54. A pair of laterally extending ribs 5
Right rib 51 and left rib 5 in which 5, 56 extend in the longitudinal direction
It extends between two. Each lateral rib 55, 56 has an arcuate bottom surface 57.

The midfoot portion 18 can be integrally molded, or it can be formed as another member that is appropriately fixed by an adhesive or the like. The material of the middle leg portion 18 is compressible and elastic, and includes an appropriate material such as ethylene vinyl acetate (EVA), compression molded rubber (CMR), and polyurethane (PU). A somewhat elastic but relatively stiff composite material such as Kevlar, graphite or Hytrel can be laminated to the inner or lower surface of the arch to enhance support and operation. Also, such composite materials can be used to strengthen the insole structure.

In one particular embodiment of the insole, the body 15 has a thickness of about 4.76 mm (3/16 inch),
The height of the arches 25, 26 of the heel portion 16 in the vertical direction is approximately 23.81 mm (15/16 inches), and the middle foot portion 18
The vertical height of the arch 36 is about 15.88 mm
(5/8 inch), the vertical height of the arch portion 42 of the toe portion 19 is approximately 12.70 mm (1/2 inch). The thickness of the arch at the top of the arch is about 6.35.
mm (1/4 inch). Therefore, when the insole 12 is supported by the base of the arch, the portion of the body 15 is inclined upward from the toe portion 19 toward the heel portion 16. The bottom edges of the right rib 51 and the left rib 52 in the longitudinal direction are gently inclined from the bottom surface of the arch portion 36 of the middle foot portion 18 toward the bottom surface of the arch portion 26 of the heel portion 16 to form the instep portion of the middle foot portion 18. It is designed to support 17. The above dimensions can be varied according to the sport for which the shoe shown in the drawing is designed.

The outer bottom 13 is generally flat and relatively thin (see FIG. 6). At the same time, the outer bottom portion 13 can have a side wall structure that can be formed in a common region with the foot portion of the arch portion. The outer bottom portion 13 has a bottom surface 59 provided with a skid resistance tread surface (FIG. 5) and a substantially flat top surface 60. The special tread shown in FIG. 5 is designed for use in court shoes such as basketball shoes. The weight of the outer bottom 13 is reduced by the central opening 61. The central opening 61 can be filled with transparent rubber or other material so that the arch structure can be seen.

The top surface 60 of the outsole 13 is provided with a plurality of raised protrusions or sidewalls surrounding the base of the arch of the insole 12 for positioning the outsole 13 relative to the insole 12. Has been. The approximately L-shaped protrusions 62, 63 on the rear portion of the heel portion 16 are formed to have a size that extends along the inside and the front surface of the base portions 29, 30 of the arch portion 25 of the heel portion 16. The U-shaped protrusions 64, 65 are
Bases 32, 33 of the arch 26 in front of the heel 16
It extends along the rear, inner and front faces.

The protrusion 66 is formed so as to extend along the base portion 17 of the arch portion 36 of the middle foot portion 18. Protrusion 6
7, 68 are front and rear portions 38a, 3a of the base portion 38 of the middle foot portion 18.
It is formed so as to respectively extend around 8b. The protrusions 67, 70, 71 at the tip of the toe portion 19 are the toe portion 1
It is formed so as to extend around the base portions 43, 44, 45 of the nine arch portions 42, respectively.

These protrusions 66, 67, 68, 69, 7
0 and 71 form a frame in which the legs of the arch can be placed. In the illustrated embodiment, the legs of the arch rest within the perimeter of the protrusion. Further, these legs can be provided with notches or grooves, and can be placed on a protrusion having a tongue and a groove or a dovetail groove. In some cases, recesses may be formed instead of protrusions in the outer bottom 13 with the legs of the arch extending therethrough.

The outer bottom portion 13 is formed of a material having required properties such as wear resistance and skid resistance. Suitable materials include conventional outsole rubber compounds and polyurethanes.
Footwear sole compounds having the required properties such as durability, tensile strength and deflection are suitable. Outer base 13 is permanently attached to insole 12 by adhesive or welding or similar means.

7 and 8 show the inner and outer soles of the running shoe for the right foot, and FIGS. 9 to 12 show the inner and outer soles of the running shoe for the left foot. Insole 75
Is approximately the same as insole 12 except that top surface 76 is generally flat and has no raised edges. Figure 9
For reference, the insole part 75 includes an elongated main body 77 corresponding to the above-mentioned arch part, a pair of arch parts 78 and 79 of the heel part, an arch part 80 of the middle foot part, and an arch of the toe part. And a section 81. Longitudinal right rib 82
A left rib 83 extends between the arch portion 80 of the middle foot and the arch portion 79 of the heel.

The outsole 84 of a flat shoe is similar to the outsole 13 except that a tread suitable for a flat shoe is provided on the bottom surface 85 (FIG. 11). The upper surface 86 of the inner bottom portion 84 is provided with a raised protrusion as shown in FIG. 4 designed to surround the base of the arch portion of the inner bottom portion 75.

Arches such as the heel, midfoot and toes of the insole are located below the main weight bearing portion of the bottom. The middle portion of the arch portion is less material than the end portion, that is, the base portion, and the insole portion 75 is curved when a downward force is applied when running or jumping. The elastic material of the compressively curved arch absorbs shock and protects the foot. Also, the elastic material of the arch acts as a spring,
Returns energy upwards to the foot when the force exerted by the foot diminishes.

Since the weight of the user is supported by the arch portions, the material of the insole portion 75 can be roughly removed in the portion between the arch portions. The relatively thin body 77 supports the foot in the area between the arches. Therefore, the insole 75 is very lightweight and provides excellent support. Also, the removed portions between the arches improve the ventilation of the insole 75.

A modified embodiment of the shoe is shown in FIGS. 13 to 20. The athletic shoe 90 has a top portion 91 and a bottom portion 92. The bottom portion 92 has a middle bottom portion 93, an outer bottom portion 94, and a liner 95 sandwiched between the middle bottom portion 93 and the outer bottom portion 94.

13 and 14 show the bottom 9 of the athletic shoe for the right foot.
2 and FIGS. 15-20 show a similar bottom portion 92 of the athletic shoe for the left foot.

Referring to FIG. 18, the insole portion 93 has a heel portion 96, an instep portion 97, a middle foot portion 98, and a toe portion 99. The pair of arch portions 100 and 101 has a heel portion 96
Extends downward from. The arch portion 100 has an upwardly curved arch surface 102, and the arch portion 101 has an upwardly curved arch surface 103 which is corrugated or provided with ribs. The corrugations act as accordion folds, allowing the material section to bend and move.

Three arch portions 105, 106, 107 extend downward from the toe portion 99 of the insole portion 93. Surface 1
08 extends between the arch portions 105 and 106, and is curved at the joint with the arch portions 105 and 106. Face 109
Extends between the arch portions 106 and 107, and is curved adjacent to the arch portions 106 and 107.

A rib 111 extends along the right side of the insole 93 between the instep 97 and the midfoot 98. The notch 112 is formed in the rib 111 of the middle foot 98. Short rib 1
13 extends along the left side of the insole portion 93. Rib 11
1 and 113 are joined by lateral ribs 114 and 115. Grooves 116, 117, 118 are ribs 111, 11
It is provided between 3, 114 and 115. Long rib 1
11, 113 provide great stability and the notch 112 facilitates bending.

Arch portions 100, 101, 105, 10
The bottom surfaces of the ribs 111, 113, 114, 115, etc. are generally in the same plane and are supported by correspondingly formed portions of the liner 95. Referring to FIGS. 14 and 19, the liner 95 includes a bottom surface 120 and sidewalls 12 extending upward around the sides and heels of the insole 93.
1 and. The bottom surface 120 corresponds to the bottom surface of the insole portion 93, and further, the arch portions 122 and 123 of the heel portion formed so as to contact the arch portions 100 and 101 of the heel portion and the arch surfaces 102 and 103 of the insole portion 93, Arch portions 124, 125, 126 of the toe portion formed so as to contact the arch portions 105, 106, 107 of the toe portion and the arch surfaces 108, 109 of the insole portion 93, and the rib 111,
113, 114, 115 and groove portions 116, 117, 118
Ribs 127, 128, 12 formed to abut
9 and 130. Openings 131, 132, 13
3,134 extend through the bottom of the insole 93. The arch portion 123 of the heel portion has a corrugated arch portion 135. The liner 95 is stiffer than the relatively soft insole 93 and provides the insole 93 with stability and firmness.

The outer bottom portion 94 has a bottom surface 138 and a side wall 139 extending upward. A skid resistance tread (FIG. 20) is provided on the bottom surface of the inner bottom portion 93.
The bottom surface of the inner bottom portion 93 has a shape corresponding to the bottom surface of the liner 95. The outer bottom portion 94 is the arch portion 122 of the heel portion.
Pair of pockets 140, 14 for receiving and supporting the base of the
1, a pair of pocket portions 142 and 143 that receive and support the base portion of the arch portion 123 of the heel portion, pocket portions 144, 145 and 146 that receive and support the arch portions 124, 125 and 126 of the toe portion, and ribs. It has pockets 147, 148 for receiving and supporting the parts 127, 128.

At the bottom of the outer bottom portion 94, the lateral ribs 129 and 130 of the liner 95 and the openings 131 and 13 of the liner 95 are provided.
A central opening 149 (FIGS. 15 and 17) is provided to expose the portion of the insole portion 93 exposed by 2, 133, and 134.

The bottom 92 acts in a similar manner to the bottom shown in FIGS. The arch part of the insole 93,
The liner 95 of the heel portion 96 and the toe portion 99, the liner 95 of the midfoot portion 98 and the instep portion 97, the ribs 111, 113 to 115 of the insole portion 93, and the rib 127 of the liner 95 of the midfoot portion 98 and the instep portion 97. ~ 130 are located on the main weight bearing portion of the bottom. The part between the middle part of the arch part and the rib can be curved downward when a force is applied when running or jumping. The bend of the compressible elastic material absorbs shock and protects the foot, returning energy upwards to the foot when the downward force is reduced.

The front portions of the ribs 111 and 113 of the insole portion 93 correspond to the arch portions 37 and 38 of the insole portion 18 of the insole portion 12 of FIG. Grooved portion 1 extending above the insole 93
Reference numeral 18 corresponds to the arch surface 40 of FIG. 2 and can be bent downward under the load exerted on the bottom.

The material of the inner bottom portion 93 and the outer bottom portion 94 can be the same as described above. The material of the liner 95 can be polyurethane, nylon, or other plastic. The liner 95 is preferably injection molded.

The detailed description of specific embodiments of the invention hereinabove set forth is for purposes of illustration only, and many of the same have been described without departing from the spirit and scope of the invention. It will be appreciated that the details of the can be modified considerably by a person skilled in the art.

[Brief description of drawings]

FIG. 1 is an exploded view of a coat shoe for the right foot made in accordance with the present invention.

FIG. 2 is an exploded view of the bottom of FIG.

FIG. 3 is a perspective view of the bottom surface of the insole for the left foot.

FIG. 4 is a plan view of the outer sole for the left foot.

5 is a bottom view of the outer bottom portion of FIG. 4. FIG.

FIG. 6 is a side view of the outer bottom portion of FIG.

FIG. 7 is a perspective view of the top of the insole of a flat shoe for the right foot.

FIG. 8 is a plan view of the outer sole portion for the right foot.

FIG. 9 is a perspective view of the insole of a flat shoe for the right foot.

FIG. 10 is a plan view of the outsole of a flat shoe for the right foot.

11 is a bottom view of the outer bottom portion of FIG.

FIG. 12 is a side view of the outer bottom portion of FIG.

FIG. 13 is an exploded view of another embodiment of a shoe for the right foot.

FIG. 14 is an exploded perspective view of the shoe sole of FIG.

FIG. 15 is a bottom perspective view of a shoe sole for the left foot.

16 is a plan view of the shoe sole of FIG.

FIG. 17 is a bottom view of the shoe sole of FIG.

18 is a bottom perspective view of the inner sole of the shoe sole of FIG. 15. FIG.

19 is a bottom perspective view of the midsole portion of the shoe sole of FIG. 15. FIG.

20 is a bottom perspective view of the outer sole of the shoe sole of FIG. 15. FIG.

[Explanation of symbols]

 10 athletic shoes 11 upper part 12 insole part 13 outer sole part 15 main body 16 heel part 17 instep part 18 middle foot part 19 toe part 20 top surface 21 outer edge part 22 outer edge part 24 right edge part 24 'left edge part 25 arch part 26 arch part 28 groove 29 base portion 30 base portion 31 arch portion 36 arch portion 38 base portion 39 notch 43 base portion 44 base portion 45 base portion 51 right rib 52 left rib 59 bottom surface 60 top surface 61 center opening 62 protrusion 63 protrusion portion 64 protrusion portion 65 protrusion portion 67 Projection 68 Projection 71 Projection 72 Projection 75 Projection 75 Midsole 77 Main body 78 Arches 79 Arches 80 Arches 81 Arches 84 Outsole 90 Sports shoes 91 Uppers 92 Bottoms 93 Midsole 94 Outsoles 95 Liners 96 Heels 97 Upper part 98 Middle foot part 99 Toe part 100 Arch part 101 Arch part 102 Arch surface 103 Arch surface 105 Arch portion 106 Arch portion 107 Arch portion 111 Rib 112 Notch 113 Rib 114 Horizontal rib 115 Horizontal rib 116 Groove portion 117 Groove portion 118 Groove portion 127 Rib 128 Rib 129 Rib 130 Rib 131 Opening 132 Opening 133 Opening 134 Pocket opening 144 145 Pockets 146 Pockets 147 Pockets 148 Pockets 149 Center Opening

Claims (15)

[Claims] 1. A heel portion, an arch portion, a middle foot portion, a toe portion, a top surface extending from the heel portion to the toe portion, which is located below the foot, and between the heel portion and the toe portion. Arches having a pair of lateral edges extending to each other, a pair of laterally spaced bases extending below the lateral edges, and an upwardly spaced arch surface extending laterally between the bases. A sole comprising an elongate body having: and an outer sole attached to the base. 2. A heel portion, an arch portion, a middle foot portion, a toe portion, a top surface extending from the heel portion to the toe portion, which is located below the foot, and between the heel portion and the toe portion. An elongated main body having a pair of side edges extending to the side, an arch portion of the heel portion of the body extending between the side edges, an arch portion of a middle foot portion of the body extending between the side edges, the side edge An arch portion of the toe portion of the body extending between the portions,
A shoe sole, each of which comprises a pair of bases and an upwardly spaced arch surface extending between the bases. 3. The outer bottom portion has a top surface and a bottom surface, the top surface of the outer bottom portion is attached to the arch portion, and the bottom surface of the outer bottom portion is attached to the arch portion and has a skid resistance tread. The shoe sole according to claim 2, wherein 4. The shoe sole according to claim 3, further comprising a pair of longitudinally extending ribs extending between the arch portion of the heel portion and the arch portion of the middle foot portion adjacent to the side edge portion of the main body. . 5. The shoe sole according to claim 2, further comprising a pair of longitudinally extending ribs extending between the arch portion of the heel portion and the arch portion of the middle foot portion adjacent to the side edge portion of the main body. . 6. The shoe sole according to claim 2, wherein the arch portion of the heel portion has first and second longitudinally-spaced arch portions. 7. The shoe sole of claim 2, wherein the toe arch portion has a pair of laterally spaced, downwardly-facing, depressed arch surfaces. 8. An arched portion of the toe portion is a side base portion adjacent to each side edge portion of the main body, an intermediate base portion positioned between the side base portions, and a first portion between one of the side edge portions and the intermediate base portion. 3. The shoe sole of claim 2 having a downwardly-facing concave arch surface and a second downwardly-facing concave arch surface between the other one of the side edges and the intermediate base. 9. The arch portion of the middle foot portion is a side edge portion of the main body.
A pair of longitudinally spaced bases that are generally underneath a portion of the body to support the base of the toes and a second portion adjacent the other side edge of the body. The sole according to claim 2, which has three bases. 10. The heel arch portion includes first and second longitudinally spaced sets of laterally spaced bases, each base being one of the side edges of the body. 9. Adjacent, having a first downwardly-facing concave arch surface extending between the first set of bases and a downwardly-facing recessed arch surface extending between the second set of bases. The shoe sole described in 2. 11. A heel portion, an arch portion, a middle foot portion, a toe portion, a top surface extending from the heel portion to the toe portion, and a portion between the heel portion and the toe portion, which is located under the foot. An elongate body having a pair of side edges extending to, an arch of a heel portion of the body having a pair of bases adjacent the side edges of the body and an upwardly spaced arch surface extending between the bases. A pair of longitudinally spaced bases that are adjacent to one of the side edges of the body and are generally below a portion of the body to support the base of the toes; An arch portion of a middle foot portion having a third base portion adjacent to another one of the side edge portions and an arch surface upwardly spaced between the base portions, a pair adjacent to the side edge portions of the main body Side bases, an intermediate base located between the side bases, one of the side edges and the middle A toe arch portion having a first upper spaced arch surface between the interbases and a second upper spaced arch surface between the other one of the side edges and the intermediate base. A sole having a top surface and a bottom surface, the top surface being attached to the base and the bottom surface having a skid resistance tread. 12. The shoe sole according to claim 11, further comprising a pair of longitudinally extending ribs extending between the arch portion of the heel portion and the arch portion of the middle foot portion adjacent to the side edge portion of the main body. . 13. The shoe sole according to claim 12, further comprising longitudinally extending ribs extending laterally between the longitudinally extending ribs. 14. The shoe sole according to claim 11, wherein the outer sole portion has a plurality of protrusions extending upward from the top surface of the outer sole portion and extending around the base portion. 15. A second arch portion of the heel portion of the body longitudinally spaced from the arch portion of the first heel portion, the second arch portion of the second heel portion having a side edge of the body. 12. The shoe sole of claim 11, having a pair of bases adjacent to the bases and upwardly spaced arch surfaces extending between the bases.