JP2547589Y2 - Athletic shoes - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in athletic shoes, in particular, athletic shoes suitable for athletic shoes.
On the outer surface of the shoe upper, there is no configuration that suppresses the elasticity of the upper,
On the other hand, on the inside surface of the shoe, the free movement of the foot is promoted, and in particular, the free movement inside the foot, where the movement is most remarkably displaced during running, is prevented as much as possible,
An object of the present invention is to provide shoes that can maximize the athletic ability of a shoe wearer.

[0002]

2. Description of the Related Art Conventionally, as a material used for an upper of an athletic shoe, synthetic fibers such as nylon and polyester as well as natural leather and synthetic leather have been generally used. Among athletic shoes, especially in so-called athletic shoes for athletics and the like, lightweight synthetic fibers are emphasized, and lightweight synthetic fibers with high strength are often used. In addition, these synthetic fibers are also excellent in elasticity, impart flexibility to the shoe upper,
The fit to the foot is also getting better.

[0003] However, in these conventional products, the same material is used substantially right and left symmetrically on the inner surface and the outer surface of the shoe upper. That is, in the conventional product, in a series of motions from landing to kicking during running, how the inside and outside around the instep are displaced, the displacement difference is not considered at all, and the inside and outside sides are not considered at all. The surfaces only used the same instep material. Therefore, the conventional product cannot naturally exhibit a sufficient exercise function of the shoe wearer.

[0004]

[Problems to be Solved by the Invention] The inventors of the present invention have analyzed the state of the foot during running and found that there is a large difference between the movement of the heel and the forefoot in the ground contact state. That is, when observing the motion in a series of footwork in running, first, the outside of the forefoot portion first contacts the ground, and then the inside contacts the ground. At this time, it was found that the inclination of the heel changed according to the movement of the forefoot.

[0005] In particular, before take-off, the forefoot part is in contact with the ground, but the heel part is inclined to the outside of the body, and the torsion between the forefoot part and the heel part is considerably large. More specifically, assuming that the state where the forefoot is horizontal to the ground and the heel is vertical to the ground is 90 degrees as shown in FIG. It can be seen that the shoe is considerably twisted.

When the twist of the forefoot and the heel caused by the take-off operation of the running is reproduced by the foot, the distance between the forefoot and the bottom of the forefoot slightly from the ankle as shown in FIG. Is
It was confirmed that it was 5.5% larger than when it was not twisted. However, when this was measured under the same conditions while wearing shoes, the extension of the upper of the shoes did not appear. In other words, this means that the upper, especially the inner lining of the shoe, is preventing the foot from moving naturally, and the foot is constantly repeating movement against the hard material of the upper. Thus, the foot is constantly consuming extra energy. This extra energy loss has a significant effect on running propulsion. In addition to short-distance running for 0.01 seconds, marathon running at 42.195 km reduces resistance due to torsion of the shoe upper over a long period of time. There was a defect that the wearer's own athletic ability was diminished.

Therefore, ideally, on the outer surface of the upper, the elasticity of the upper should be ensured in order to ensure the shape-preserving property of preventing deformation of the shoe due to the outward pressure of the foot in the upper. It is desirable to adopt a configuration for suppressing free movement, while promoting a free movement of the foot inside the shoe.

[0008]

Therefore, in view of the above-mentioned deficiencies of the conventional products, the present inventors have made intensive studies especially to provide ideal shoes to be worn on a run Lang, and consequently came to provide the present invention. It is a thing. That is, in the present invention,
The outer side is made of a material having different elasticity, and in the upper part of the inner side, at least the heel reinforcing piece and the toe reinforcing piece, and the inner instep surrounded by the eyelet decoration piece, The first technical means is that it is formed of a material having high elasticity. As a second technical means, a new technical means is adopted in which the inner upper is formed of a woven or knitted cloth having a lower density than the outer upper.

[0009]

According to the present invention, the inner surface of the shoe upper, which is stretched by the twist of the forefoot, is made of a material that is more stretchable than the upper of the outer surface, so that the original movement of the foot during running can be achieved. To minimize the loss of kinetic energy caused by resistance to torsion, especially on the inner surface of the shoe upper, and to maximize the running ability of the shoe wearer. On the outer side of the shoe, the structure of suppressing the elasticity of the upper can secure the shape retention for preventing the deformation of the shoe due to the outward pressure of the foot in the upper of the shoe.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The athletic shoe of the present invention will be described with reference to the embodiment shown in the drawings. FIG. 1 is a schematic plan view of the left and right shoes of the athletic shoe of the present invention as viewed from above, and FIG. It is a side surface schematic diagram which shows the inner surface. In the present invention, as shown in FIG. 1, the upper part 1 of the inner surface of the shoe upper is formed of a material having higher elasticity than the upper part 2 of the outer surface.

In this case, as a material used as the upper part 1 of the inner surface, a synthetic fiber such as nylon, polyester, vinylon or synthetic leather, or a material usually used as an upper material of shoes is used. Is used. On the other hand, the upper member used for the upper part 2 on the outer side is made of natural leather, synthetic leather or a synthetic fiber product and is generally used for athletic shoes, and has excellent shape retention. It is desirable to use a material that is suitable for use. Means for changing the expansion and contraction ratio of the inner and outer shells in this way include using the same member for the inner and outer shells in addition to using different members, and making the inner shell 6 more dense than the outer shell 7. Of course, the desired object can also be achieved by forming with a coarse woven or knitted fabric.

FIGS. 2 and 3 show an embodiment in which the present invention is applied to athletic shoes. In an upper part 1 of an inner surface of a shoe upper, at least a heel reinforcing piece 3 and a toe reinforcing are provided. By forming the inner upper piece 6 surrounded by the piece 4 and the eyelet decorative piece 5 with a material having higher elasticity than the outer upper piece 7,
It seeks to achieve its intended purpose. At this time, natural leather or synthetic leather is used as the upper cover member used for the heel reinforcement piece 3 or the toe reinforcement piece 4 and the eyelet decoration piece 5 for the purpose of shape retention and reinforcement. . As a material suitable for the inner upper piece 6, synthetic fibers such as nylon, tetron, and vinylon are suitable. On the other hand, the outer upper piece 7 is inferior to the inner upper piece 6 in terms of elasticity. Leather and synthetic leather can also be used.

In this case, the inner upper piece 6 is made of a single material, and as shown in FIG. 6, a sponge 10 is interposed between a front fabric 8 and a back fabric 9 made of synthetic fibers. A three-layer structure is also included in the present invention. Of course, the inner upper piece 6 is not limited to a three-layer structure, but is provided with the same condition in relation to the outer upper piece 7, that is, the structure itself is regarded as one fabric, and at least the outer As long as it is richer in elasticity than the upper piece 7, a multi-layer structure is also included.

[0014]

[Effects of the Invention] Therefore, according to the present invention, the inner surface of the shoe upper is formed of a material having higher elasticity than the upper part of the outer surface, so that the outer surface of the shoe can withstand landing pressure. The inner shape of the shoe expands and contracts the upper of the shoe without resistance according to the twist of the forefoot and the heel, and fits the original movement of the running foot. In order to minimize the loss of kinetic energy caused by the resistance to twisting generated inside and to maximize the running ability of the shoe wearer, shoes for short distances in athletics, especially for 0.01 seconds. And marathon competition shoes, which is a device with extremely high practicality as an athletic shoe suitable for all sports.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of left and right sports shoes of the present invention viewed from above.

FIG. 2 is a schematic side view of the sports shoe of the present invention.

FIG. 3 is a schematic plan view of the athletic shoe of the present invention as viewed from above.

FIG. 4 is a graph showing torsional angles of running shoes obtained from experiments.

FIG. 5 is a side view showing an inner side surface of a human foot.

FIG. 6 is a schematic partial sectional view of an inner upper piece of a shoe upper;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper part of inner surface 2 Upper part of outer surface 3 Heel reinforcing piece 4 Toe reinforcing piece 5 Eyelet decoration piece 6 Inner upper piece 7 Outer upper piece 8 Table cloth 9 Back cloth 10 Sponge

Claims (2)

(57) [Scope of request for utility model registration] An outer surface of a shoe upper is made of a material having different elasticity.
It is formed of a material, and in the upper
At least the heel reinforcement piece 3 and the toe reinforcement piece 4 and the eyelet decoration
Inner upper 6 surrounded by piece 5 is more elastic than outer upper 7
An athletic shoe characterized by being formed of a high material. 2. An athletic shoe according to claim 1, wherein said inner upper piece 6 is formed of a woven or knitted cloth having a density lower than that of said outer upper piece 7.