JPH0415046Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an insole that keeps feet from getting stuffy.
This invention relates to an insole in which a sheet having a plurality of independent recesses surrounded by partition walls formed on the upper surface is laminated as a lower layer.

When your feet sweat inside your shoes, the moisture tends to stay inside the shoes, especially when you do strenuous exercise.
The temperature of the feet increases and sweat increases, and most of the sweat remains inside the footwear. Sweat is first absorbed under the shoes while being worn, and at the same time it is absorbed by the materials that make up the footwear, but as sweating progresses, the inside of the footwear becomes saturated with water, making it uncomfortable and increasing foot fatigue. .

Conventionally, methods to relieve foot stuffiness caused by sweating in footwear include using highly breathable materials for footwear, or making partial incisions in the instep, toes, and upper part of the heel. However, most of the moisture that sweats from the soles of the feet stays on the surface of the insole and does not evaporate sufficiently. For this reason, a hygroscopic insole made of one or more laminated sheets made of leather, fiber layer, non-woven fabric, or foamed synthetic resin is used to absorb the moisture sweated inside the footwear. The disadvantage of insoles is that if you continue to sweat for a long time, the moisture in the insole becomes saturated, making your feet stuffy and uncomfortable.

In addition, the present inventor provided an array of independent recesses surrounded by a number of partition walls on the upper surface of the midsole of the shoe, and overlaid an insole made of a porous sheet with low water absorption on the upper surface of the midsole. Utility Model Application No. 58-88896 discloses a shoe that eliminates stuffiness caused by perspiration by combining these two methods. However, in the above-mentioned invention, it was necessary to form the insole of the shoe into a special shape.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an insole that does not keep the feet stuffy even when used for a long time under conditions of heavy sweating, and can be used for such footwear.

Next, the content of the present invention will be explained in detail with reference to the drawings. FIG. 1 is a plan view of the insole of the present invention, and FIG. 2 is a sectional view taken along line A-A' of the same. 1 is the upper layer of the insole of the present invention, and is made of a porous sheet with low water absorption.
For example, relatively thick single fibers of synthetic fibers with a diameter of 0.1 to 1 mm are knitted into stitches of 2 to 5 mm in size, and several layers of this mesh are laminated and the periphery is fused, glued, or sewn to form a single sheet. The formed one is used,
In addition, a porous sheet formed by laminating and bonding synthetic fibers, a relatively hard foamed elastic synthetic resin sheet, etc. can also be used. When forming the upper layer 1 by laminating multiple layers of nets knitted from synthetic yarns with low hygroscopicity, use a net made of relatively thin yarns with low hygroscopicity knitted into a fine mesh on the upper surface of the upper layer 1. ,
If a net made of relatively thick yarn with low hygroscopicity knitted into a coarse mesh is used in the lower part of the upper layer 1, the comfort will be further improved. The lower layer 2 is made of hard rubber or elastic synthetic resin, and has a number of independent recesses 3 surrounded by partition walls on its upper surface as shown in FIG. 3 or 4. The recess 3 is, for example, a depression with a depth of 2 mm and a diameter of 2 to 5 mm, or a depth of 2 mm, a width of 2 mm, and a length of 30 mm.
It is a rectangular or horseshoe-shaped depression about 2 to 2 mm in size.
The recesses 3 arranged at 5 mm intervals on the upper surface of the lower layer 2 may be provided on the entire upper surface of the lower layer 2, or may be provided only on areas of the sole of the foot that sweat a lot, such as the stepping area and the toe area. The upper layer 1 and the lower layer 2 are sewn together with a sewing thread 4 having low hygroscopicity. Instead of sewing the upper layer 1 and the lower layer 2 together, they can also be laminated and fixed by known fixing means such as adhesion, fusing, or pinning.

If the upper layer 1 made of a porous sheet and the lower layer 2 having the recesses 3 on the upper surface are laminated as described above, the lower layer 2
Since the upper layer 1 is stacked in a bridge shape on the recess 3 of the lower layer 2, the recess 3 of the lower layer 2 does not directly contact the sole of the foot, improving comfort. The portion of the upper layer 1 bridged over the recess 3 is not compressed, allowing a thick air layer to be maintained within the insole.

Since each recess in the lower layer is surrounded by a bottom surface and a continuous partition wall and is formed independently from each other, water droplets accumulated in each recess are independently dispersed and stay in each recess, and flow. Since the water droplets do not aggregate with each other, there is no risk that the water droplets will grow larger due to aggregation, contact the socks, be sucked up, and spread into the socks, making them uncomfortable to wear.

According to the insole of the present invention, most of the moisture that sweats from the feet is absorbed by the soles and the constituent materials of the shoe, but when a large amount of sweat occurs, the upper layer has low water absorption, so it is absorbed into the recesses of the lower layer. The water disperses and stays in the form of droplets, and an air layer is formed in the upper layer consisting of numerous voids and microspaces that do not absorb sweat, resulting in a comfortable feeling with less stuffiness and long wear. It can be used without being removed. The insole of the present invention can be used as an insole for all types of footwear, and is effective in preventing feet from getting stuffy even when used in shoes with low breathability.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the insole of the present invention, Fig. 2 is a sectional view taken along the line A-A', Fig. 3 is a perspective view of a part of the lower layer of the insole of the present invention, and Fig. 4 is a plan view of the insole of the present invention. FIG. 3 is a perspective view of another embodiment of the invention. Explanation of symbols, 1... Upper layer, 2... Lower layer, 3...
Recessed portion, 4... Sewing thread.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a shoe insole composed of upper and lower layers, the upper layer is made of a porous sheet with low moisture absorption, and the upper layer is made of a rubber, synthetic rubber or elastic sheet,
At least on the entire surface of the upper surface of the footing part or the toe part, there are a number of independent recesses that are surrounded by the bottom surface and a partition wall continuous thereto, and are not in communication with each other but are adjacent to each other with the partition wall separating them. An insole characterized by laminating a lower layer and a lower layer arranged in a continuous manner. (2) The insole according to claim 1, wherein the upper layer is formed by laminating several layers of knitted fabric made of synthetic fibers with low hygroscopicity knitted into a net shape.