Insole

Abstract

Disclosed is a insole arranged on an upper surface of an innersole in a shoe. The insole includes: an intermediate supporting portion 41 coming into close contact with a center portion of a foot sole, including an arch, and having a plurality of elastic protrusions P formed on a lower surface of grids L defining grid-type thru-holes; and a rear supporting portion 42 extending from the rear end of the intermediate supporting portion 11 to a heel of the foot in order to make close contact with a rear portion of the foot sole, and having a plurality of stationary protrusions P′ formed on the lower surface of the rear supporting portion 42 to protrude downward. The insole can improve air permeability through the thru-holes, and in addition always makes close contact with the foot sole through elastic protrusions formed on the lower surface thereof so as to buffer impact on the shoe. Further, the stationary protrusions formed on the lower surface of the insole are stuck in the innersole, thereby preventing movement of the insole inserted in the shoe.

Description

TECHNICAL FIELD[0001]The present invention relates to a insole stacked on an inner sole of a shoe, and more particularly to a insole which includes an intermediate supporting portion making close contact with and supporting a center portion of the sole of the foot including arch, and a rear supporting portion extending from a rear end of the intermediate supporting portion so as to make close contact with and support a rear portion of the sole of the foot, and wherein the intermediate supporting portion has grids defining a plurality of thru-holes, and the rear supporting portion has a plurality of protrusions protruding from a bottom surface thereof, thereby improving air permeability of the insole and supporting the sole of the foot flexibly and elastically, as well as preventing a change of position of the insole.BACKGROUND ART[0002]Since human being begun walking, shoes initially have functioned to protect user's feet from damage while providing comfort in walking. However, with...

AI Technical Summary

Benefits of technology

"The present invention aims to solve the problems of shoe sole ineffectiveness in supporting the arch and adjusting its elasticity based on the user's weight. The invention provides an insole that can effectively support the arch with curvature and improve air permeability, reducing impact on the foot and fatigue induced by the impact. This prevents the foot from being subjected to force while using the shoe for a long time."

Problems solved by technology

However, as being formed to substantially have a flat shape, the conventional innersole 13 cannot make close contact with the foot sole, especially the arch, with small and large bends, and cannot buffer impact on the foot sole.

Further, there is a problem in that the conventional innersole 13 causes a flat-foot of the foot sole when a user wears the shoe with the innersole for a long time.

However, since the innersoles are mass-manufactured with a standardized structure having the convex portion A in a single shape, the arch of the foot sole may not be matched with the convex portion according to users.

Furthermore, the arch-type convex portion is gradually flatted by weight repeatedly applied thereto, so as not to support the arch of the foot sole correctly.

In addition, since the elastic restoring force of the innersole is remarkably degraded, the innersole cannot make close contact with and support the foot sole with small and large bends.

As a result, fatigue of the foot increases.

Especially, in the case of a person walking for a long time or having a flat-foot, it is impossible to stably supporting the arch using only the innersole.

However, in the characteristic of high elastic material, the insole can feel hard due to lack of flexibility.

In addition, the insole has a problem of rather increasing fatigue of the foot sole when a user uses the insole for a long time.

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