JPH0223127Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Field of Application> The present invention relates to an upper sole plate for footwear that is attached to the upper surface of the outsole of shoes, sandals, etc. and has a large number of protrusions projecting therefrom.

<Prior art> Some conventional upper sole plates for footwear have a structure with a large number of protrusions; an example is (1),
No. 51843, (2), No. 57-198905, (3), No. 61-
No. 123701, (4), JP-A-48-49544, (5), Jitsukaisho
Although it is disclosed in the inventions such as Publication No. 59-141804,
In any device other than the above-mentioned (4) which has a solid protrusion with a height and a height, a bottom plate is an essential element to seal the bottom surface of the protrusion in order to airtightly seal air inside the protrusion. The structure was such that no formation was possible.

<Problem to be solved by the invention> Since the protrusions formed on the upper bottom plate of the above-mentioned prior art retain their structure and function as protrusions by enclosing air, the bottom plate that seals the bottom surface of the protrusions is an essential component. This requires not only two members to be used as the upper sole plate for footwear, but also the effort of attaching the two members in close contact with each other. In addition, since the protrusions are filled with air, they create a large amount of resistance against the soles of the feet, similar to an air pillow, and if the protrusions are damaged, the air escapes and they no longer function as protrusions.

The present invention aims to eliminate many of the drawbacks of the prior art, to provide an upper sole plate that can be produced at low cost and has an excellent feel and stimulation effect on the soles of the feet.

<Means for solving the problem> A single EVA resin sheet is molded to have a large number of hollow protrusions protruding from the surface of the substrate, and the back surface of each of the protrusions is concave, with the lower end opening on the back surface of the substrate. In addition, each protrusion is formed to have a height, size, etc. corresponding to the unevenness of the sole of the foot, and the upper sole plate has hollow protrusions protruding from it without adding a bottom plate for enclosing air.

<Example> To explain an example with reference to the drawings, the upper bottom plate of the present invention is manufactured by vacuum forming or other forming means using a single sheet of EVA (ethylene acetate copolymer) resin as a substrate, as shown in FIG. First, a large number of hollow protrusions 2 are molded to protrude from the surface of the substrate 1, and the back surface of the hollow protrusions is concave as shown in the sectional view of FIG. 1, and the lower end thereof is open to the back surface of the substrate. Considering the function as the upper sole plate of the covering, the large number of hollow protrusions 2 correspond to the unevenness of the sole of the foot, and are arranged in the arch area a, the toe area b where force is applied, and the heel area where weight is applied. If the protrusions of c are formed to protrude by distinguishing heights and large and small parts, and the ratio of the outer diameter D to the height H of the protrusions is approximately 1:1.5, as shown in Figure 1, the pine surge will be very good. It is best to provide such a large protrusion, especially on the arch part a, because it provides a stimulating stimulation.
The ratio of D and H is approximately 1:
Experiments have shown that a value of 0.5 gives a pleasant feeling to the soles of the feet.

Therefore, maintaining the above ratio relationship,
By molding an EVA resin sheet, one sheet is used as a substrate 1, and the thickness of the hollow protrusion 2, which is open at the lower end of the back surface, is kept to the necessary minimum, without enclosing air. In addition, there is no need for a bottom plate, and the hollow protrusion itself provides elastic cushioning and support to the soles of the feet, and does not deform or wear out due to excessive pressure during use. There will be no damage caused by. Therefore, there is no need to consider airtightness when attaching the shoe to the outsole.

Incidentally, the protrusions having the ratio of 1:1.5 described above could only be formed by vacuum forming.

<Effects of the invention> The present invention, which has the above-mentioned structure and function, is
An EVA resin sheet is molded to form a large number of hollow protrusions with an open back on the surface, and the hollow protrusions have a concave back and are shaped like a single plate without enclosing air. The protrusions elastically cushion and support the soles of the feet, and unlike conventional products, there is no need for a bottom plate to hold the enclosed air, and the bottom plate is completely airtight, so there is no need for additional means or effort to maintain the enclosed air. It is possible to obtain a pleasant feel and pine surge stimulation that is not caused by the elasticity of large air resistance, and when attaching the upper sole plate to the main sole, there is no need for strict airtight adhesion, and simple sewing is sufficient. Of course, this is an idea for an upper sole plate for footwear that has great practical value as it can be easily attached to the outsole.

[Brief explanation of drawings]

FIG. 1 is an enlarged sectional view of the main part of the present invention, and FIG. 2 is an external perspective view showing one embodiment of the upper bottom plate of the present invention. 1...Substrate, 2...Protrusion.

Claims (1)

[Scope of utility model registration request] A single EVA resin sheet is molded to form a large number of hollow protrusions protruding from the surface of the substrate, the back surface of each protrusion is a concave surface, and the protrusions are formed in height, size, etc. to correspond to the unevenness of the sole of the foot. An upper sole plate for footwear, characterized in that the back surface of the protrusion is opened on the back surface of the substrate.