JP2544047Y2 - Sole material for shoes - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoe sole material suitable for long distance races, marathons, and the like.

[0002]

2. Description of the Related Art A sole material consisting of a midsole and an outsole, which constitute a part of a sole of a shoe for a long distance race, a marathon or the like, is basically a laminate of the same shape (that is, both have substantially the same area). is there. In such a laminate,
In consideration of abrasion resistance and the like, the outsole is made of a solid foam or a solid foam that is relatively close to a solid compared to the midsole.

[0003]

The sole material having the above-mentioned structure has excellent wear resistance on the entire surface of the outsole and can be worn for a long period of time, but is hard, so that the foot movement during the competition, for example, kicking Inability to cope with bending and stretching in the stepped part at the time of launching and landing, lack of instantaneous power, kicking power, etc., difficulty in speed, and legs are easily fatigued and poor in function Was.

[0004]

The present invention is separated as shown in FIG. 1 which is a side view of a main part, FIG. 2 which is a plan view of FIG. 1, and FIG. 3 which is a bottom view of FIG. A midsole (3) is laminated on the upper surface of the front outsole (1) and the back outsole (2) in a cross-linked manner, and the midsole (3) is an upper surface (5) of the non-step portion (4). And / or a sole material for shoes, characterized in that elastic plates (8) and (8) are fitted on both sides (7) and (7) of the lower surface (6). is there. Since the shoe sole material of the present invention is used for long-running shoes such as long-distance races and marathons, it is important to use a material that is lightweight and has excellent wear resistance. This is one of the factors. From this viewpoint, the midsole (3) is a soft foam having a relatively small specific gravity, such as an ethylene-vinyl acetate copolymer or polyurethane, and the front outsole (1) and the back outsole (2) are the midsole (3). A natural rubber or a synthetic rubber having a specific gravity slightly larger than the above and having excellent abrasion resistance and a hard foam or a solid body is used.

[0005] From the viewpoint of giving particular importance to abrasion resistance, the back outsole (2) is preferably a solid body of natural rubber or synthetic rubber having a specific gravity as small as possible. The resilient plates (8), (8) fitted to the upper surface (5) and / or the lower surface (6) of the midstep (4) of the midsole (3) are rectangular strips as shown in FIG. It may be a U-shaped one connected to appropriate portions of the band-shaped body as shown in FIG. 3, that is, a polyamide resin, a ring-opening polymer of ε-caprolactam, and adipic acid. It is a condensate with hexamethylenediamine, which generates less spherulites when cooled and solidified from a molten state, resulting in less crystallization, such as polyamide resins or urethane bonds, linear hydrocarbons and aromatic hydrocarbons. A polyurethane resin or the like, which is a three-membered repeating compound, is used.

[0006]

[Function] The sole material for shoes of the present invention is made of a soft material in the non-stepped part (4), so when used for other shoes, it can sufficiently cope with foot movement and can be used for a long time. Less fatigue, and elastic plates (8), (8) on both sides (7), (7) of the upper surface (5) and / or lower surface (6) of the stepped part (4)
Are fitted, kicking force, instantaneous force, etc. are generated at the time of kicking out, landing, and the like, and there is a secondary effect that the plates (8), (8) can prevent lateral deflection. Occur.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1, FIG. 2 and FIG.
Foam (3) as the ethylene-vinyl acetate copolymer (vinyl acetate content 14%) (specific gravity 0.4 g / cm ^3), as the front outsole (1), natural rubber / styrene-butadiene copolymer rubber = 70/30 foam (compound specific gravity 0.96 g / cm ³ ), as backout sole (2) natural rubber / styrene-butadiene copolymer rubber = solid body composed of 70/30 compound (specific gravity) 1.15 g / cm ³ ), the resilient plates (8), (8)
Polyamide resin (crystallinity 22%, specific gravity 1.02g / c
m ³ ) was used to obtain a sole material. The sole material was fitted with an upper material using a cotton fabric as a top cloth and a recycled fiber fabric as a backing cloth, and an insole was put into the shoe to form shoes. A laminate having the same shape, that is, a midsole, corresponding to the sole material
(3) Laminate consisting of (ethylene / vinyl acetate copolymer foam, vinyl acetate content 17%, specific gravity 0.45 g / cm ³ ), outsole (polyurethane rubber solid, specific gravity 1.03 g / cm ³ ) The body was used as a midsole of a control example, and a shoe using an upper material and an insole of the same material as the above was used as a control example.
5 runners wear the former shoes and 30km per day
Was continued for 10 days, and then left one day later, the latter shoes were worn and running under the same conditions, and the following results were obtained. Feeling of speed Speed of the present invention Extremely good Increase Control Example Feet slightly hurt from day 5 Low

[0008]

EXAMPLE A sole material suitable for long-distance race shoes, which is comfortable to wear and can increase the speed without damaging the foot, was obtained.

[Brief description of the drawings]

FIG. 1 is a side view of a main part of a sole material for shoes of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a bottom view of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Front outsole 2 Back outsole 3 Midsole 4 Non-step section 5 Upper surface of 4 6 Lower surface of 4 7 Both sides of 5 and 6 8 Elastic plate

Claims (1)

(57) [Scope of request for utility model registration] A midsole (3) is laminated on the upper surface of a front outsole (1) and a back outsole (2) which are separated from each other, and the midsole (3) is Elastic plates (8), (8) are fitted on both sides (7), (7) of the upper surface (5) and / or lower surface (6) of the stepped part (4). Sole material for shoes.