JPS628721Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a sole for sports shoes.

When a person walks or runs slowly,
The sole of the foot tilts slightly outward, and the foot lands on the heel first, and the weight of the foot is transferred to the outside of the non-touching area, to the outside of the treading area, and to the inside of the treading area in this order. At that time, if you look only at the heel, the outside of the heel receives pressure first, and the reaction causes the weight to shift past the center of the heel to the inside of the heel, causing so-called overpronation, which can cause ankle and knee injuries. Become.

The above-mentioned overpronation can be prevented by changing the cushioning properties of the bottom of the heel to minimize the sinking of the inside of the heel.

Conventionally, attempts have been made to prevent overpronation by combining different types of elastic bodies, but these do not seem to have had the desired effect.

This invention consists of an elastic body integrated with the outer sole that changes the pressure-receiving area on the inside and outside of the heel, and a sponge with excellent cushioning properties is fitted into the recess between the inside and outside of the heel. The purpose of preventing overpronation is achieved by differentiating the absorbability of received pressure between the inside and outside.

The embodiment shown in the drawings will be specifically described.
Fig. 1 is a top view, and Fig. 2 is a cross-sectional view taken along the line A-A of the heel, in which an elastic outer sole 1 made of rubber or the like and an elastic sole 2 made of sponge are integrally molded. In the heel part, the circumferential thickness tU・tI of the outer sole periphery 3U of the outer heel part U and the outer sole periphery 3I of the inner part I
is obtained by making tU (<tI) thinner toward the outer U.

With the above configuration, the absorbability of pressure received by the inner side I and the outer side U of the heel section is different, and when the landing weight is received from the outer side U of the heel section, the edge formed on the heel section will be stronger than the inner side I. Since the outer U is narrower (tU<tI), it absorbs the shock. When the weight is shifted so that the heel returns horizontal to the center line, the edge of the heel becomes gradually thicker from the outer U to the inner I, which eliminates cushioning properties and prevents overpronation. Since the U-shaped peripheral edge is formed on the outside of the heel, the effect can be obtained continuously as the weight shifts. In addition, the peripheral edge is integrated with the outer sole, so there is no variation in effectiveness. Easy to manufacture. The toe guard 5 and back guard 4 are integrated with the sole 1, so the holding of the shoe body and the sole 1 is good.

[Brief explanation of drawings]

FIG. 1 is a top view of the sole of the present invention, FIG. 2 is an enlarged cross-sectional view of the heel, and FIG. 3 is a side view. 1 is the outer sole, 2 is the elastic sole, U is the outer side, I is the inner side, 3U is the outer outer sole periphery, 3I is the inner outer sole periphery, and tU and tI are the circumferential thicknesses.

Claims (1)

[Scope of utility model registration request] The edge of the heel part of the outer sole 1 of the elastic body is integrally projected upward, and the thickness of the protruding edge is gradually increased from the outer circumferential edge 3U to the inner circumferential edge 3I to form the inner circumferential edge 3I.
A shoe sole for sports shoes in which the cushioning property is reduced by increasing the pressure receiving area of the elastic sole 2, and the heel portion of the elastic sole 2 is located in a recess within the protruding edge.