Structure of shoe sole

Abstract

A structure of shoe sole is provided, which is a custom-made shoe sole that is formed according to a user's foot sole so as to improve the effects of support and wrapping of the shoe sole. The shoe sole includes an enclosure and a clay-like thermoplastic material. The enclosure includes upper and lower cover layers that are made of a material showing local stretchability and air permeability. The thermoplastic material is received between the upper and lower cover layers and is a thermoplastic mixture in the form of soft ceramic. With the shoe sole placed in a shoe and the shoe put on a user's foot, the thermoplastic material of the shoe sole may get deformed inside the enclosure according to the contour of the user's foot sole, making the shoe sole shaped to completely match the foot sole of the user.

Description

TECHNICAL FIELD OF THE INVENTION[0001]The present invention generally relates to the field of shoe sole, and more particularly to a structure of shoe sole that is self-shapeable and heat-setting so that the shape of shoe sole can be automatically set according to three-dimensional contour of a user's foot sole to thereby enhance safety and comfortableness of the user wearing shoes.DESCRIPTION OF THE PRIOR ART[0002]A shoe sole is a pad that is positioned inside a shoe for supporting pressures induced on a foot sole and limiting the movement of an ankle thereby providing a cushioning function to reduce the potential risk of damage to the user's foot. The shoe sole is put in direct contact with a foot sole and it is of critical effect on the safety and comfortableness of a user wearing the shoe. A conventional shoe sole is made in the form of a flat pad like article, which only engages front and rear portions of the foot sole and the heel, but provides no support to the arch that is at...

AI Technical Summary

Benefits of technology

[0007]Thus, the primary object of the present invention is to provide a structure of shoe sole, wherein the shoe sole is custom-made according to the contour of a user's foot sole, so that excellent support and close wrapping around the foot sole can be realized.

[0012]With such a technical solution, the shoe sole made in accordance with the present invention, when positioned in a shoe that is worn by a user, allows the thermoplastic material inside the enclosure of the shoe sole to deform and thus be shaped according to the foot sole of the user. Further, since the thermoplastic material is enclosed and thus constrained by the enclosure, the adhesion of the thermoplastic material is properly isolated and deformation of the shoe sole to a three-dimensional configuration corresponding to the user's foot sole can be properly achieved. Further, after heating and setting, the shoe sole can effectively wrap around the heel of the user's foot sole and properly support the arch, making the pressure of the foot sole uniformly distributed on the foot sole and the moving space of the ankle suitably constrained, so that safety and comfortableness are significantly improved and added value is increased, leading to upgraded capability of competition and increased economic value.

Problems solved by technology

This results in non-uniform distribution of pressure.

Further, since the user's foot is not properly constrained, the heel is allowed for movement in a large range.

This often results in a twist of the ankle.

Apparently, the conventional shoe sole does not completely meet the needs of general consumers.

This, plus the effect of restoration springing, makes it not possible to mold and shape the shoe sole by directly using a user's foot sole, and the shoe sole can only be properly formed after being repeatedly depressed and molded several times by using the foot mold that is prepared in advance.

Further, during the process of molding and shaping, although the shoe sole blank can be deformed in a vertical direction within a three-dimensional space to form an arch pad, yet deformation of the blank in a horizontal lateral direction is not significant enough to provide an effect of wrapping the arch at opposite sides thereof.

Further, as discussed above, the known technique uses a fixed foot mold, which has a poor capability of shaping, so that it needs several times of repeated molding steps before the final shape can be obtained.

Thus, it is not possible for the known technique to provide a custom-made shoe sole, for each individual user has different height of arch, and thus, no effective support to the arch can be realized and the pressure distribution on the foot sole cannot be made uniform.

Further, it shows a poor effect of positioning, which negatively influences the comfortableness of user wearing a shoe.

Further, since the conventional shoe sole does not closely wrap around the foot sole of a wearer, the foot sole of the wearer is allowed to shift in an undesired lager range inside the shoe, making the positioning of foot sole even worse and eventually resulting in deformation and hurt of foot sole due to twisting.

In addition, due to the poor effect of not properly supporting the arch and not wrapping the heel, a wearer of a shoe cannot get the foot relaxed when taking movement while wearing the shoe.

This leads to waste of body energy and a long term wear of the shoe incorporating the conventional shoe sole will eventually exhaust the wearer and cause tiredness and incapability of long standing and walking.

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