JPS6138682B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a studded sole for soccer, football, baseball, rugby, track and field, etc. (hereinafter simply referred to as soccer soccer).

Conventionally, soles with studs for sports cars and the like have been made by integrally molding the sole and studs from a single synthetic resin, or by screwing metal studs onto the sole. The former is preferable in terms of making the shoe lighter, but it requires the use of a relatively soft synthetic resin to ensure the flexibility of the sole, and as a result, the studs have the disadvantage of lacking wear resistance. It was hot. The latter is preferable from the viewpoint of flexibility of the sole and wear resistance of the studs, but it is necessary to embed a large number of cylinders with screw holes in the sole of the shoe, into which the screw rods of the studs are screwed. However, the manufacturing process is complicated, and the resulting shoe sole is heavy.

Therefore, in view of these shortcomings of the conventional technology, the present inventor has made extensive studies and has determined that the material of the supporting piece, studs, and sole body can be integrated by changing the hardness of synthetic resins of the same type or different types with good compatibility. By molding, the sole body has flexibility, the studs have wear resistance, and the supporting pieces have a shank spring action that prevents the studs from sticking up, and in addition, it is possible to create a lightweight sole. This finding led to the present invention.

That is, as shown in FIG. 1, the present invention provides a shoe made of a cross-linked synthetic resin with excellent abrasion resistance at predetermined locations in the forefoot portion 4 and heel portion 5 of the sole body 1 having excellent flexibility. A stud 3 is provided, a support piece 2 having a harder hardness than the stud 3 is provided on the sole body 1 around the stud sole 7, and the hardness of the sole body 1, the support piece 2, and the stud 3 is changed. This is a shoe sole with studs that is integrally molded using synthetic resins that are of the same type or different types and have good compatibility.

The studded shoe sole according to the present invention will be explained based on examples, as shown in FIGS. 1, 2, and 5.
Studs 3 with excellent wear resistance and a hardness of approximately JIS (A) 76 are arranged at predetermined locations on the forefoot portion 4 and heel portion 5 of the sole body 1, which has excellent flexibility. 3, the supporting piece 2 is attached to the sole body 1 around the stud sole 7 of the stud 3.
The support piece 2 is provided with studs 3 and the sole body 1 has a higher hardness, and these three are integrally formed from a thermoplastic polyester-based polyurethane resin.

Further, the stud 3 may be formed integrally with the sole body 1 by disposing a support piece 2 on the stud sole 7, as shown in FIG.

In the case of the thermoplastic polyester-based polyurethane resin used in the present invention, the JIS (A) hardness of the support piece 2, studs 3, and sole body 1 is approximately
It is good to have a difference of about 10.

Note that the hardness difference varies somewhat depending on the type of synthetic resin used, so the hardness difference is exemplified based on the case where the polyurethane resin is used.

Next, to explain the manufacturing method of the shoe sole according to the present invention, after removing the burrs from the studs 3 separately molded from polyurethane resin with a hardness of about JIS (A) 76, and cleaning the mold release agent etc. with a solvent. This stud 3 is placed in a primary molding mold, and a polyurethane resin having a harder hardness than that of the stud 3 is injection molded into this mold to form the support piece 2, and as shown in FIG. The studs 3 and the support pieces 2 are integrally formed to form a primary molded body, and before the shrinkage of this primary molded body is completed, a movable mold that holds the primary molded body is moved to the secondary molding side, and the movement is performed. The mold and the secondary mold are clamped, and a polyurethane resin having a hardness lower than that of the support piece 2 is injection molded to form the sole body 1, and the primary molded body and the sole body 1 are integrated. Then, the desired sole as shown in FIG. 1 is formed.

As shown in FIG. 1, by disposing the support piece 2 also in the arch part 6, this support piece 2 acts as a shank spring, and the support piece 2 of the front part 4 of the sole body 1 This prevents the studs 3 from sticking up, reduces the burden on the feet, and provides shoes with less fatigue.

As described above, the studded shoe sole according to the present invention has studs 3,
The support piece 2 and the synthetic resin used for the sole body 1 are made to have different hardness, so that the sole body 1 has flexibility and the studs 3 have wear resistance. Since the supporting piece 2 and the studs 3 are integrally arranged on the sole, the sole can be made lightweight and have good flexibility, and the sole body 1 and the studs 3 are integrally formed. The sole main body 1 and the studs 3 can be more firmly integrated than those in which the sole body 1 and the studs 3 are not missing, and the sole can be made to have excellent durability without missing the studs 3.

In addition, when using the shoe sole, as shown in FIG. 5, an integrated support piece 2 is provided around the stud sole 7, or as shown in FIG.
Since the studs 3 are attached to the sole body 1 by placing
Even if the sole body 1 is soft, it is possible to prevent the feeling of pushing up due to the studs 3 and provide an excellent sole that is comfortable to wear and reduces fatigue.

[Brief explanation of the drawing]

The drawings show a shoe sole according to the present invention; FIG. 1 is a front view of the shoe sole of the present invention, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a cross-section taken along the - line in FIG. 7. Figure 4 is a sectional view taken along the - line in Figure 8;
Figure 5 is a sectional view taken along the - line in Figure 1;
The figure is a sectional view of a shoe sole showing another embodiment, and FIGS. 7 and 8 are explanatory diagrams showing the process of manufacturing the shoe sole. 1... Sole body, 2... Support piece, 3... Stud, 4
...front section, 5...heel section, 6...arch section, 7...
Stud bottom.

Claims (1)

[Claims] 1 Sole body 1 made of synthetic resin with excellent flexibility
Studs 3 made of a cross-linked synthetic resin with excellent wear resistance and support pieces 2 made of a synthetic resin harder than the studs 3 are placed at predetermined locations on the forefoot portion 4 and heel portion 5 of the foot.
The sole body 1 is divided and arranged, and the sole body 1, the support piece 2, and the studs 3 are integrally molded from thermoplastic synthetic resins of the same type or different types with good compatibility. Studded soles.