JP3102375U - Sole structure - Google Patents

Abstract

[Problem] To provide a shoe capable of minimizing deformation of a shoe sole caused by twisting of an arch part by a midsole with respect to various movements of a foot and maintaining good fit of the shoe sole with respect to a sole.
In a shoe sole structure in which a midsole (3) is arranged between an outsole (5) and an insole (4), a hard reinforcing body (11) having a planar expansion is arranged on an arch (9) of the midsole (3).
[Selection diagram] Fig. 1

Description

  The present invention relates to athletic shoes and golf shoes used for exercising, as well as to shoe sole structures with improved fit and cushioning of the soles to the feet in commonly worn business shoes and radial shoes. .

  The importance of shock absorption of soles is recognized not only in shoes used mainly for exercise such as athletic shoes, golf shoes, spikes, but also in shoes generally used such as business shoes and radial shoes, Many shoes have been designed to increase the cushioning of the shoes so that they do not get tired even after prolonged use.

  A conventional shoe of this type has a midsole formed of an EVA foam as a sole structure for improving cushioning. In many cases, the midsole of this shoe has a relatively thick heel and focuses on shock absorption at the heel. There is also a shoe sole structure in which a material having high elasticity such as a sponge is used for the outsole, so that the cushioning by the elasticity of both the midsole and the outsole can be obtained synergistically.

  According to such a sole structure, when walking or running, the heel portion of the midsole receives a particularly large load and is greatly compressed by the load applied to the midsole from the sole. The load applied as a compressive force to the midsole is also transmitted to the outsole at the same time, and the cushioning by both elasticities acts synergistically to absorb the impact, reducing the pain when the foot hits the ground and the fatigue due to the impact The specific structure of the midsole is that the thickness of the heel is thickened and the thickness of the midsole is gradually reduced by hanging on the toe, thereby forming a foot shape.

  However, as described above, when the midsole actually wears shoes made of EVA foam, the degree of load applied to the midsole from the sole is also affected by unevenness and inclination of the ground. Usually, the load is hardly applied to the arch portion, and most of the load is divided into the front and rear portions from the arch portion and applied to the tread portion and the heel portion of the midsole.

  Therefore, in the case of the midsole where the heel is thickened and the thickness is gradually reduced by hanging it on the toe, the foot is loaded on the midsole with respect to the ground, and the next foot movement on the midsole When a biased load is applied, the midsole twists horizontally from the arch and deforms, so the twist of the midsole appears as deformation of the sole, and the sole of the sole against the sole In some cases, the performance is impaired, a sense of unity between the shoes and the feet is not obtained, and the next movement cannot be performed smoothly and quickly.

  Therefore, the present invention has been made in view of such a situation, and in response to various movements of the foot from a state where the foot is on the ground, the midsole deforms the shoe sole caused by the arch portion being twisted. Provided is a shoe sole structure capable of reducing the force as much as possible, maintaining good fit of the shoe sole with respect to the sole, obtaining a sense of unity between the shoe and the foot, and smoothly and quickly shifting to the next movement. It is intended for that purpose.

  In order to achieve the above object, the sole structure according to the present invention is a sole structure in which a midsole is arranged between an outsole and an insole, and the arch part of the midsole is provided with a hard surface having a planar expansion. A reinforcement body is provided.

  According to the shoe sole structure of the present invention configured as described above, the rigidity of the arch portion is increased by disposing the hard reinforcing body on the arch portion of the midsole, so that in various movements of the foot, from the sole, Even if a biased load is applied to the midsole, the midsole does not twist from the arch and the sole does not deform, so the fit feeling of the sole against the sole is not impaired, By getting a sense of unity between the shoes and feet, it is possible to move on to the next movement smoothly and quickly.

  In the above configuration, when disposing the reinforcing body on the arch part of the midsole, a reinforcing body fitting hole is provided in the arch part, and a reinforcing body thinner than the arch part is fitted in the reinforcing body fitting hole, and Is made flush with the midsole surface, the work of assembling the reinforcing body to the midsole can be simplified, and workability can be improved from the viewpoint of manufacturing.

  In the present invention, the deformation of the shoe sole caused by the arch of the midsole being twisted in the horizontal direction appears when the edge of the reinforcing member fitting hole provided on the midsole has irregularities around the reinforcing member. Therefore, when a horizontal flange is protruded around the reinforcing member, and the horizontal flange is engaged with a stepped portion formed around the reinforcing member fitting hole, the upper surface of the reinforcing member and the midsole surface are made flush with each other. The unevenness of the reinforcing body fitting hole edge generated by twisting the arch part of the midsole is pressed down by the horizontal flange of the reinforcing body and the deformation force is quickly eliminated, so the effect of preventing the deformation of the shoe sole is enhanced. be able to.

  In the above-described configuration, the reinforcing body is formed to be elongated in the front-rear direction, the front and rear edges are bent outward in a U-shape, and the spread in the lateral direction is gradually reduced from the front to the rear. When the front and rear edges are joined by tapered left and right edges, the deformation of the reinforcing member fitting hole edge caused by twisting of the arch of the midsole causes a plurality of corners around the reinforcing member having a planar expansion. Since the deformation force is dissipated and received by the portions to eliminate the deformation force, the deformation force can be more efficiently eliminated.

  By the way, the torsion of the midsole from the arch portion is mainly caused by the unbalanced load from the tread portion side. Therefore, regarding the heel of the midsole, the heel of the midsole emphasizes the cushioning of the heel rather than the partial load applied to the arch. Therefore, the heel portion of the midsole is hung from both sides of the heel portion to the rear portion, a constant width is taken along the periphery, and a cushioning body fitting concave portion is provided inside the heel portion. When a cushioning member having a high elasticity is fitted, the cushioning property of the heel portion is enhanced, and the comfort of the shoe is improved.

  The material of the shock absorber used in the present invention is not particularly limited, but the midsole and the shock absorber are made of soft materials having different densities from the viewpoint of compatibility with the midsole and lightening of the sole. It is preferred to thermoform with EVA foam.

  As described above, according to the shoe sole structure of the present invention, the rigid reinforcement having a surface spread is disposed on the arch of the midsole, so that the rigidity of the arch is increased, Since the arch deformation reduces the deformation of the sole caused by twisting in the horizontal direction, in shoes where the impact absorption of the sole is important, the fit of the sole to the sole is not impaired, and the sole A bodily sensation is obtained, and the next movement can be smoothly and quickly performed.

  A preferred embodiment of a shoe sole structure according to the present invention will be described with reference to the accompanying drawings.

  1 is a longitudinal sectional view of a shoe provided with a sole according to the present invention, FIG. 2 is a perspective view showing a disassembled state of the sole, and FIGS. 3 (a), (b) and (c) are side views of a reinforcing member. FIG. 3 is a plan view and a sectional view taken along line aa.

  In the figure, the sole 1 has a midsole 3 adhered to the upper 2, an outsole 5 adhered to the midsole 3, an insole 4 is inserted into the upper 2, and this is laid on the midsole 3. It is of a configuration that is placed.

  The midsole 3 is formed by thermoforming an EVA foam into a foot shape. The heel portion 6 is relatively thickened, and the thickness is gradually reduced by hanging on a toe portion. And a side portion 8 that covers the lower edge of the upper 2 from outside.

  Further, a reinforcing body fitting hole 10 is provided in the arch part 9, and a reinforcing body 11 thinner than the arch part 9 is fitted in the reinforcing body fitting hole 10 so that the upper surface of the reinforcing body 11 is flush with the three surfaces of the midsole. I have to.

  The form of the reinforcing body fitting hole 10 and the reinforcing body 11 according to the embodiment is elongated in the front-rear direction, the both front and rear edges are bent outward in a U-shape, and the lateral expansion extends from the front to the rear. Are progressively reduced, and the front and rear edges are joined by tapered left and right edges so as to have a planar expansion.

  The reinforcing body 11 is formed of a hard plastic, has a thickness of about 比 べ of the thickness of the midsole 3 in the reinforcing body fitting hole 10, and is in close contact with the reinforcing body fitting hole 10. The reinforcing body 11 according to the embodiment, which is to be fitted, has an outer frame portion 12 which is fitted in the fitting hole 10 in a close fitting manner, and a middle frame portion which partitions the inside of the outer frame portion 12 in the front-rear direction. 13 and a seat plate 15 which covers the entire upper surfaces of the outer frame portion 12 and the middle frame portion 13 and has a horizontal flange 14 protruding around the outer frame portion 12. I'm wearing

  Further, the reinforcing body 11 is accommodated in the upper half of the reinforcing body fitting hole 10, and the lower half of the fitting hole is enlarged in cross section downward like a trumpet opening. In addition, a stepped portion 17 is formed around the reinforcing member fitting hole 10 opened on the surface of the midsole 3 so that the horizontal flange 14 of the reinforcing member 11 is engaged. 14 are engaged to make the upper surface of the reinforcing body 11 and the surface of the midsole 3 flush.

  The insole 4 is cut into a footprint from a sheet material formed by thermoforming an EVA foam. When the insole 4 is applied to the latter half of the insole 4, that is, from the arch to the heel, the insole is covered from the periphery. The side part 18 joined from the inside to the lower edge part 2 is raised. In the embodiment, the side portion 18 rises upward from a thin seat plate 19 bonded to the lower surface of the insole 4 so as to extend along the edge of the insole 4. In addition, the side part 18 and the seat plate 19 use the same type of EVA foam as the insole 4 and are thermoformed integrally.

  The outsole 5 is formed into a foot shape by rubber or the like, and a toe portion is provided with a side portion 20 that covers a lower edge portion of the upper 2 from outside, continuously with the side portion 8 of the midsole 3, Overall, it is thinner than the midsole 3. An opening 21 is provided in the arch portion corresponding to the reinforcing member fitting hole 10 of the midsole 3 so that the reinforcing member 11 can be seen from below.

  When the user wears a shoe provided with the sole 1 having the above structure, the insole 4 in the upper 2 contacts the sole of the foot, and the foot is stabilized in the shoe. Therefore, when walking or running normally, the load applied to the midsole 3 from the sole of the foot absorbs the impact mainly due to the elasticity of the midsole 3, causing pain when the foot touches the ground. Reduces fatigue due to pod impact.

  Further, since the arch portion 9 of the midsole 3 has a rigid reinforcing body 11 fitted thereto to increase rigidity, the midsole 3 can be moved from the sole to the various movements of the foot from the state where the foot is on the ground. Even when a biased load is applied to the sole, deformation of the shoe sole caused by twisting of the midsole 3 from the arch 9 is reduced. Accordingly, the fit between the foot and the shoe is kept good, and the sense of unity between the foot and the shoe is always obtained, and the next movement can be smoothly and quickly performed.

  Further, in the sole 1 according to the present invention, the twist from the arch portion 9 of the midsole 3 is mostly caused by the offset load from the tread portion 7 side, and the cushioning of the heel portion 6 is regarded as important. You. Therefore, the heel portion 6 is provided with a constant width along the peripheral edge of the heel portion 6 from both sides to the rear portion, and a buffer body fitting concave portion 22 is provided inside the heel portion 6. The cushioning member 23 made of a soft EVA foam having a different density is fitted to improve the comfort of shoes.

  The sole 1 according to the present invention is improved by merely fitting the hard reinforcing body 11 to the midsole 3, whereby the deformation of the sole 1 caused by the midsole 3 being twisted from the arch 9 is reduced, and the foot and the shoe are improved. This is particularly useful when applied to shoes used for exercising, because the next action can be quickly performed while maintaining good fit.

1 is a longitudinal sectional view of a shoe having a shoe sole according to the present invention. It is a perspective view showing the disassembled state of the shoe sole. (A), (b), (c) is a side view, a plan view, and a sectional view taken along line aa of the reinforcing body.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Sole 2 Upper 3 Midsole 4 Insole 5 Outsole 6 Heel part 7 Foot part 8 Side part 9 Arch part 10 Reinforcement fitting hole 11 Reinforcement body 12 Outer frame part 13 Middle frame part 14 Horizontal flange 15 Seat plate Reference Signs List 16 thin cloth 17 step-down portion 18 side portion 19 seat plate 20 side portion 21 opening 22 buffer fitting recess 23 buffer

Claims (6)

  A sole structure in which a midsole is disposed between an outsole and an insole, wherein a hard reinforcing member having a planar expansion is disposed on an arch portion of the midsole.   2. A reinforcing body fitting hole is provided in an arch part, and a reinforcing body thinner than the arch part is fitted in the reinforcing body fitting hole, so that an upper surface is flush with a midsole surface. Shoe sole structure.   A horizontal flange is projected around the reinforcing member, and the horizontal flange is engaged with a cut-off portion formed around the reinforcing member fitting hole so that the upper surface of the reinforcing member and the midsole surface are flush with each other. Item 3. The shoe sole structure according to item 1 or 2.   The reinforcing body is formed to be elongated in the front-rear direction, and the front and rear edges are bent outward in a U-shape, and the width of the front and rear portions is gradually reduced so as to gradually reduce the width of the front and rear edges. The shoe sole structure according to any one of claims 1 to 3, wherein the right and left sides are connected by tapered left and right side edges.   On the heel of the midsole, hang from both sides of the heel to the rear, take a constant width along the periphery and provide a buffer fitting recess on the inside, and the buffer fitting recess has a higher cushioning property than the midsole. 3. The shoe sole structure according to claim 1, wherein a buffer is fitted. The shoe sole structure according to claim 1 or 5, wherein the midsole and the buffer are formed of soft EVA foams having different densities.

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