JP2544050Y2 - Sole for sports shoes - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the improvement of shoe soles. More specifically, the present invention relates to a portion of a shoe sole surface in the vicinity of the ball of the front foot to improve the flexibility of a shoe sole for sports shoes. In addition, bent grooves are provided in a cross shape to promote flexibility in the inward and outward directions.

[0002]

2. Description of the Related Art There are sports in which sports are played outdoors, indoors, and both depending on the type of sport. Examples of sports played outdoors include soccer and rugby. What is performed includes table tennis and badminton, and what is performed on both includes handball and tennis. The soles of sports shoes in which competitions are held outdoors are formed with deep concave and convex grooves to prevent slipping. On the other hand, the soles of sports shoes performed indoors have a relatively shallow flat concave-convex groove on the grounding surface side in order to prevent slippage due to close contact with the floor.

[0003]

[Problem to be solved by the invention] Sports shoes
Depending on the sport, there are athletic races, marathons, jogging, etc., and sports with many front, rear, left and right movements, such as tennis, table tennis, and badminton. In particular, shoes that are suitable for the conditions of the ground and the court are required, and sports shoes that flex freely in response to the movement of the human body are required. However, some have poor flexibility because the shoe sole is formed thick to prevent impact during exercise.

Therefore, in order to improve the flexibility, for example, as shown in Design Registration No. 803520, a bent groove is provided in the front stepping portion of the shoe sole so as to be substantially perpendicular to the foot length direction. Although there is also a version with improved flexibility of the front stepping portion, it has not yet been satisfactory as a sport shoe of a type having many front, rear, left and right movements such as tennis, table tennis and badminton.

[0005] Looking at the sole of a person, the part which can be roughly classified into a front stomping part, an arch part, and a heel part, and the part where the sole is bent by exercise can be seen from the skeleton diagram of the foot shown in FIG. ,
It bends along the line connecting the metatarsal heads and bends in the AA line direction shown in FIG.
When the foot is stepped inward, it is bent in the direction of the line BB, and when it is stepped outward, it is bent in the direction of the line CC. Accordingly, there has been a demand for a sports shoe having a shoe sole that bends easily in accordance with these bending directions.

[0006]

SUMMARY OF THE INVENTION Therefore, according to the present invention, a bent groove for improving the outward bending and a favorable inward bending are provided in a portion near the thumb ball portion of the front stepping portion on the contact surface side of the shoe sole. This is a shoe sole for sports shoes having a configuration in which a bending groove is formed in a cross shape so that the shoe sole can freely bend in accordance with the movement of the human body.

[0007]

FIG. 1 is a plan view of a sole of a shoe for sports shoes according to the present invention, FIG. 2 is a cutaway view of an essential part of a shoe sole for sports shoes of the present invention, and FIG. 3 is a side view of a shoe sole for sports shoes of the present invention. FIG. 4 is a schematic view showing the relationship between the skeleton of the foot and the bending portion, and FIG. 5 is a plan view of a conventional shoe sole for sports shoes on the ground contact side. This will be described below with reference to the drawings.

A rubber, a synthetic rubber, a synthetic resin or other materials having the same effect as above are used. First, a foot is placed on a portion of the shoe sole near the ground surface (3) near the ball portion (6) of the front stepping portion (15). Looking at the skeleton, C- bent when the foot is stepped outward
An outward stepping groove (10) excavated in a concave shape from the sole contact surface side (3) to the inner surface side (4) in a portion corresponding to the line C;
A bent groove composed of an inward step groove (11) excavated in a concave shape from the shoe sole contact surface side (3) to the inner surface side (4) at a portion corresponding to the line BB bent when the foot is stepped inward. A sole body (2) having (7) is formed.

The outwardly extending groove (10) and the inwardly extending groove (11) of the bent groove (7) are inevitably formed in an intersecting portion in the vicinity of the ball portion (6) of the stepping portion (15). You.

The outward stepping groove (10) of the bending groove (7) has an inclination angle (2α) with respect to the foot length direction (20).
Is most preferable when the inclination angle is set to approximately 70 degrees, but it can be formed in the range of 65 to 75 degrees according to the sport type. In contrast, the inward step groove (1
1) is best when the inclination angle (1α) is set to an inclination angle of about 30 degrees with respect to the foot length direction (20), but is formed in the range of 28 to 33 degrees in accordance with the sport type. be able to. In addition, the bent groove may be formed in a shape in which a curved line is slightly rounded in addition to a straight line. FIG.
As shown in the figure, a side band portion (8) is provided on the side surface of the shoe sole.
In the case of a shoe sole having a concave portion (9) in the side band portion (8) where the bending groove (7) comes into contact with the side band portion (8), the flexibility and adhesiveness of the shoe sole are good. Become. Arbitrary concave and convex grooves (5) may be provided on portions other than the bent groove (7) as desired.
And design grooves are arbitrarily formed.

[0011]

[Effect of the Invention] Since the present invention has the above-described structure, when exercising with this sports shoe, the bent groove (7) of the shoe sole is excavated and formed more deeply than other uneven grooves (5). When the foot is stepped outward, the outward step groove (10) is bent, and when the step is stepped inward, the inward step groove (11) is bent. The intersection of (10) and the inward step groove (11), that is, the rear part of the ball portion of the ball is more easily bent than the other concave and convex grooves (5), so that the sole can easily adapt to strong bending of the sole. Does not hinder the adhesion to

Further, since the shoe sole can be easily bent in the stepping-out direction, the area where the uneven design of the shoe sole comes into contact with the ground increases,
Landing has the effect of improving grip strength and promoting exercise performance. Further, in the case of a shoe sole having a rising side band (8) on the side surface of the shoe sole, the side band (8) in contact with the bending groove (7) is bent since a concave notch (9) is formed. It is a shoe sole for sports shoes that has an effect of preventing side bands (8) from swelling due to bending distortion even when the sole of the shoe is strongly bent, thereby preventing the occurrence of poor adhesion and the like.

[Brief description of the drawings]

FIG. 1 is a plan view of a shoe sole for a sports shoe according to the present invention on the grounding surface side.

FIG. 2 is a sectional view of an essential part of a sole for a sports shoe of the present invention.

FIG. 3 is a side view of the sole of the present invention.

FIG. 4 is a schematic diagram showing a relationship between a skeleton of a foot and a bending portion.

FIG. 5 is a plan view of a conventional shoe sole for sports shoes on the ground contact side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sole for sports shoes 2 Sole sole body 3 Tread side 4 Inner surface side 5 Irregular groove 6 Thumb ball part 7 Bending groove 8 Side band part 9 Depressed notch part 10 Outer stepping groove 11 Inner stepping groove 15 Stepping part 16 Arch Part 17 Heel part 20 Foot length direction 1α Tilt angle 2α Tilt angle

Claims (4)

(57) [Scope of request for utility model registration] An outward stepping groove (10) is formed at a position near a thumb ball (6) of a front stepping portion (15) of a shoe sole having an arbitrary uneven groove (5) formed on a ground contact surface side (3). A shoe sole for sports shoes, wherein a bent groove (7) comprising an inward step groove (11) is provided in a cross shape. 2. The method according to claim 1, wherein the bent groove (7) is excavated deeper in the direction from the ground contact surface side (3) to the inner surface side (4) than the uneven groove (5) provided on the contact surface side (3). The shoe sole for sports shoes according to claim 1. 3. An outward stepping groove (10) of the bending groove (7) has an inclination angle (2α) with respect to the foot length direction (20).
The shoe sole for sports shoes according to claim 1 or 2, wherein is formed in a range of 65 to 75 degrees. 4. An inwardly extending step groove (11) of said bent groove (7) has an inclination angle (1α) in the range of 28 to 33 degrees with respect to the foot length direction (20). Item 4. The shoe sole for sports shoes according to item 1 or 2.