JPH11169203A - shoes - Google Patents

Abstract

(57) [Summary] [Problem] To provide a shoe which is excellent in shock absorption and stability at the time of walking or exercising, particularly at the time of exercising, can reduce a burden on a foot, and can facilitate smooth footwork. SOLUTION: A sole part 2 is formed of an elastic material. Further, when the sole portion 2 is divided into a toe portion, a tread portion, an arch portion, and a heel portion in order from the front, a depression 10 is formed at least in a width direction central region of the tread portion, and a width direction central region and an inner region thereof are formed. And a step 12 is provided between the step and the outside area.
The depression 10 may be formed continuously from the widthwise central region of the tread portion to the widthwise central region of the heel portion. It is appropriate that the depth of the depression 10 (the distance of the step 12) is 1 to 15 mm, and the width of the depression 10 is 10 to 50% of the width of the sole portion 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoe having an improved sole structure. More specifically, the present invention has improved shock absorption and stability during walking and exercise, and is suitable for use as a sports shoe. Regarding shoes that can be.

[0002]

2. Description of the Related Art The sole portion of a shoe is generally thicker in the longitudinal direction from the toe portion to the heel portion, and the heel portion is generally thicker than other portions or is increased in thickness from the tread portion to the heel portion. For example, a structure in which the thickness in the longitudinal direction is varied, such as by forming the film, is generally used. On the other hand, as for the thickness of the sole portion in the width direction, the center region, the inner region, and the outer region in the width direction are all formed to have substantially the same thickness.

[0003]

When walking or exercising while wearing shoes, a considerable load or impact is applied to the sole. The size of the load applied to the sole is 1 (weight only) when the person is standing still while wearing shoes.
Then, when walking, it is about 1.3, and when jumping, it is about 3, and when an intense exercise is performed in front, rear, left and right, an even greater load and impact are applied to the sole. Therefore, if the impact is directly transmitted to the foot, it may cause a failure of the foot. Therefore, when designing the sole,
It is an important theme how to absorb and mitigate the impact applied to the sole, and in the past, trying to achieve the purpose by selecting the material of the sole, for example, using an elastic material or an elastic foam material as the material of the sole I have.

[0004] In a sports shoe equipped with a non-slip stud on the sole, since the stud of the same height is arranged on the sole, there is no deforming element, so that the sole is not easily deformed, and therefore the shock absorption due to the deformation is low. At the same time, the load is concentrated on the central region in the width direction of the sole, and therefore, the stability is lacking. On the other hand, conventionally, as described above, an attempt was made to absorb and alleviate the impact by the material of the sole portion, but it was not possible to obtain satisfactory impact absorption and stability by itself. Therefore, in the case of exercising while wearing shoes having a conventional sole, there is a possibility that the impact applied to the sole is transmitted to the foot as it is, causing a foot failure.

The conventional sole having studs of the same height is not stable because the load applied to the inner and outer areas in the width direction of the bottom surface is smaller than that of the central area, so that the sole is not stable. When the thumb (first
When the braking was performed using the finger, the sole could not be sufficiently gripped on the ground without a large inclination of the sole.
Therefore, it is inferior in shock absorption and stability, one of the causes of sprains, and one of the factors that hinders smooth footwork.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has excellent shock absorption and stability during walking and exercise, particularly during exercise, to reduce the burden on the foot, and to facilitate smooth footwork. The purpose of the present invention is to provide shoes that can be used.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a shoe provided with a sole portion made of an elastic material, wherein the sole portion is sequentially formed from the front with a toe portion, a tread portion, an arch portion, and a heel. The present invention provides a shoe characterized in that when divided from a portion, a depression is formed in at least a central region in the width direction of the tread portion, and a step is provided between the central region and its inner and outer regions.

In the shoe according to the present invention, a depression is formed in the center area in the width direction of the sole section at the step portion to which the load is most applied during walking and exercise, and the depression is formed between the center area and the inner and outer areas. Is provided with a step. Therefore, when walking or exercising, particularly during exercise such as golf, the load is effectively prevented from concentrating on the center area in the width direction of the tread portion, and the load applied to the sole is substantially equalized over the entire tread portion. You. Further, the sole portion is easily deformed due to the presence of the depression, and the inner area and the outer area of the tread portion are firmly grounded to sufficiently grip the ground. Therefore, according to the shoe of the present invention, shock absorption and stability are improved.

Hereinafter, the present invention will be described in more detail. The sole portion of the shoe of the present invention is made of an elastic material, and the sole portion may have a single-layer structure, or may have a two-layer structure including a midsole (inner layer) and an outsole (outer layer) in contact with the ground. When the sole portion has a single-layer structure, examples of the material of the sole portion include an elastic foam such as foamed rubber and foamed plastic, and non-foamed rubbers and plastics.

When the sole portion has a two-layer structure, it is appropriate to make the midsole softer than the outsole in that the function for achieving the object of the present invention is more effectively exhibited. As the material of the midsole, for example,
Foamed rubber, elastic foams such as foamed plastics, non-foamed rubbers and the like, and more specifically,
EVA (ethylene vinyl acetate) foam, ordinary foamed rubber, foamed polyurethane, and the like can be suitably used. The hardness of the material of the midsole is 5 in Asuka-C hardness.
The angle is preferably 0 to 90 °, particularly preferably 60 to 80 °.
As the material of the outsole, it is preferable to use rubber or a rubber-like elastic material, and more specifically, non-foamed rubbers, thermoplastic urethane, nylon or the like can be suitably used. The hardness of the outsole material is
The JIS-A hardness is preferably 55 to 95 °, particularly preferably 65 to 85 °. The midsole and the outsole may each have a single-layer structure made of the same material, or may have a multilayer structure in which a plurality of layers made of different materials are stacked.

In the shoe of the present invention, a depression is formed at least in the widthwise central area of the tread portion, and a step is provided between the central area and its inner and outer areas. In this case, the depression may be provided only in the width direction center area of the tread portion, but more preferably, the depression is formed continuously from the width direction center region of the tread portion to the width direction center region of the heel portion. Yes, it is possible to obtain more excellent impact absorption and stability. At this time, the depression may extend to a part of the toe.

The depth and width of the depression are not limited, but the depth (distance of the step) of the depression is 1 to 15 mm, particularly 2 to 10 m.
m, and the width of the depression is preferably about 10 to 50%, particularly about 20 to 40%, of the width of the portion where the depression of the sole portion is located, so that good shock absorption and stability can be reliably obtained. Can be.

In the present invention, it is preferable that the depression is formed by substantially reducing the thickness of the sole portion. In this case, the sole portion is more easily deformed, and the shock absorbing property is further improved.

In the present invention, a groove surrounding the depression can be formed around the depression. In this case, the load applied to the sole is more uniformly equalized, and the flexibility of the sole in the width direction is improved, so that the grip on the ground is further improved. In this case, it is appropriate that the groove has a width of 3 to 10 mm and a depth of 0.5 to 3 mm. Note that the grooves may be formed continuously or intermittently.

When the shoe of the present invention is configured as a sports shoe such as a golf shoe, a plurality of non-slip studs can be provided on the sole portion. In this case, the type of the non-slip stud is not limited. For example, a so-called metal stud or a soft spike detachably attached to the sole portion may be used, but a part of the sole portion is protruded and integrally formed with the sole portion. It is particularly preferred that they are prepared.

As described above, when the shoe of the present invention is provided with a non-slip stud with a part of the sole protruding, as shown in an embodiment to be described later, the stud tip in the widthwise central area of the sole, What is necessary is just to set the difference between the position of the inner section or the outer section and the tip of the stud as the distance of the step of the recess. In this way, the non-slip studs in the width inner and outer areas are firmly grounded,
Stability is improved. However, when the anti-slip stud is not provided on the sole portion, the difference between the position of the sole surface inside the depression and the position of the sole surface outside the depression may be set as the distance of the step of the depression.

In the shoes of the present invention, the thickness in the longitudinal direction from the toe to the heel of the sole can be appropriately set. For example, the heel is made thicker than other parts, Increasing the thickness toward the heel is optional.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment FIG. 1 is a plan view of a sole portion of a shoe according to a first embodiment of the present invention as viewed from the back side, and FIG.
FIG. The sole part 2 of the shoe of this example is
It has a two-layer structure consisting of a midsole 4 and an outsole 6. The midsole 4 is made of EVA foam (Aska-C hardness 65 mm), and the outsole 6 is made of non-foamed rubber (JISA hardness 75 mm). ), And the midsole 4 is softer than the outsole 6. Also, the sole portion 2 of the present example
Are provided with a large number of non-slip studs 8 formed by protruding a part of the outsole 6 in a truncated cone shape. Note that the heights of all the non-slip studs 8 are substantially equal.

In this embodiment, when the sole portion 2 is divided into a toe portion, a tread portion, an arch portion, and a heel portion in order from the front, a part of the toe portion is used as one of the tread portion, the arch portion, and the heel portion. The depression 10 is formed continuously along the longitudinal direction. The width of the depression 10 is
Is about 1/3 of the width of the portion where. In addition, depression 1
Numeral 0 is located in the central area of the toe, tread, arch, and heel, and a step 12 is provided between the central area and the inner and outer areas. In this case, since the shoe of the present example is a sport type shoe equipped with the stud 8, the difference in position between the tip of the stud 8 in the center area in the width direction of the sole portion 2 and the tip of the stud 8 in the inner area or the outer area is determined. , The distance g of the step 12 of the depression 10 is set,
The distance g is 3 mm. The step 12 is not set by the thickness of the sole 2 but by a difference in the height of the stud, that is, by reducing the height of the stud in the central area by a distance g from the height of the stud in the inner area. Can also be set.

When the sole portion 2 has a two-layer structure including the outsole 6 and the more flexible midsole 4 as in this example, the depression 10 is formed as shown in FIG. Is reduced by reducing the thickness t ₁ of the width direction inner and outer sections to t ₂ in the center area, that is, t ₁ −t ₂ ≒ g. This is desirable from the viewpoint of improving the stability and dispersing the load around the sole. Therefore, in this example, the upper surface of the midsole 4 is substantially flat, and the thickness u of the outsole is substantially equal throughout the widthwise central area, the inner area, and the outer area of the sole portion 2.

Second Embodiment FIG. 3 is a plan view of a sole portion of a shoe according to a second embodiment of the present invention viewed from the back side, and FIG.
It is a B expanded sectional view. The shoe of the present embodiment is the same as the shoe of the first embodiment except that a groove 14 surrounding the depression 10 is formed around the depression 10 in the shoe of the first embodiment. 1 and 2 are denoted by the same reference numerals and description thereof will be omitted.

The groove 14 has a groove width of about 5 mm and a depth of about 1 mm, and is formed continuously around the depression 10 along a boundary line surrounding the depression 10. Also, the groove 14
4 is formed by subtracting the thickness corresponding to the groove depth from the surface of the depression 10 from the thickness of the midsole 4 as shown in FIG. The groove may be formed intermittently, for example, may be divided at the toe side and the heel side, and may be provided discontinuously on the left and right.

[0023]

The shoes of the present invention can be used when walking or exercising.
In particular, it has excellent shock absorption and stability during exercise, and can reduce the burden on the foot and facilitate smooth footwork.

[Brief description of the drawings]

FIG. 1 is a plan view showing a sole portion of a shoe according to a first embodiment of the present invention as viewed from the back side.

FIG. 2 is an enlarged sectional view taken along the line AA in FIG.

FIG. 3 is a plan view showing a sole portion of a shoe according to a second embodiment of the present invention, as viewed from the back side.

FIG. 4 is an enlarged sectional view taken along line BB in FIG. 3;

[Explanation of symbols]

 2 Sole part 4 Midsole 6 Outsole 8 Non-slip stud 10 Depression 12 Step 14 Groove

Claims (9)

[Claims] 1. A shoe provided with a sole portion made of an elastic material, wherein the sole portion is divided into a toe portion, a tread portion, an arch portion, and a heel portion in order from the front, and at least a widthwise central region of the tread portion. A shoe, wherein a recess is formed in the center area and a step is provided between the center area and the inner and outer areas. 2. The shoe according to claim 1, wherein the depression is formed continuously from the widthwise central area of the tread portion to the widthwise central area of the heel portion. 3. The shoe according to claim 1, wherein the distance of the step is 1 to 15 mm. 4. The width of the depression is 10 to 5 times the width of the sole portion.
The shoe according to claim 1, 2 or 3, which is 0%. 5. The shoe according to claim 1, wherein the depression is formed by reducing a thickness of a sole portion. 6. The shoe according to claim 1, wherein a groove surrounding the depression is formed around the depression. 7. The shoe according to claim 1, wherein the sole portion includes a plurality of non-slip studs. 8. The shoe according to claim 7, wherein a distance of the step due to the formation of the depression is set by a difference in height of a non-slip stud provided in a sole portion. 9. The non-slip stud is formed by projecting a part of a sole portion.
Shoes according to.