Insole for a shoe

Abstract

The present invention relates to an insole installed inside a shoe to contact each foot sole portion of the human forefoot (A), midfoot (C) and rearfoot (B), which is made of a plurality of materials having varying degrees of hardness depending on the insole region, wherein the respective materials are combined to form a single layer. Preferably, the insole for a shoe comprises: a base plate with any one of a forefoot hole, a midfoot hole and a rearfoot hole formed therein corresponding to one of respective foot regions (A), (B) and (C); and an inner plate including one or more of a forefoot support, midfoot support and rearfoot support to be inserted into one of the holes, and, respectively, wherein the base plate and the inner plate are manufactured with materials having varying degrees of hardness relative to one another.

Description

TECHNICAL FIELD[0001]The present invention relates to an insole installed in the bottom inside a shoe to contact the human sole for supporting a sole of the human foot and absorbing the pressure shock, and more particularly, to an insole being made of a plurality of materials having varying degree of hardness depending on the insole region, wherein the respective materials are combined to form a single layer, considering the different pressure distribution depending upon a foot sole portion by a human load.BACKGROUND ART[0002]Conventionally, an insole is installed in the bottom inside a shoe to contact the human sole for supporting, protecting human foot and absorbing the pressure shock, and most of them generally has a shape similar to the sole of a human foot and some specific portion of the insole is protruded in order to support the concave portion of a foot. And the insole is entirely made of single material, foam resin of elasticity and restoration, such as urethane foam and s...

AI Technical Summary

Benefits of technology

[0013]According to the present invention, the insole has a shape corresponding complementarily in shape to a sole of human foot, and is made of a plurality of materials having varying degrees of hardness depending on the insole region, and as a result, the insole of the present invention effectively can absorb the big pressure shocks concentrated on the protruded portions of the foot sole, whereas the portion of not-much pressure on the insole is not nearly deformed to improve fitting power thereof and provides almost bare-foot sensation with the insole installed inside a shoe.

[0014]Differing from the prior art, which attaching the insole piece of the different material having different hardness onto the basic insole to form two or m...

Problems solved by technology

Therefore, an insole made of a single material cannot effectively reflect on or cope with the different pressures applied to the different portions of the sole respectively, and especially cannot absorb much higher pressure-shock concentrated on specific protruded portion of the foot, so that long time walking with a shoe having a single-material insole causes to the foot aches and feels easily fatigue.

The disclosed foaming insole of prior art, however, cannot absorb sufficiently all the pressure shocks on different pressure portions of the foot sole, because the said insole is manufactured by using the materials having simply different hardness of the fo...

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