JPH0781Y2 - Sole of throwing sports shoes - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to the structure of the sole of an athletic shoe for throwing competition, and in particular, the movement of the axial foot, that is, the rotational movement when the hammer is thrown, is made smooth and the flight distance is increased. The present invention relates to a sole of an athletic shoe for throwing competition.

(Prior Art) Conventionally, as athletic shoes used for hammer throwing competition,
It is common to provide a wrinkle on the ground contact surface side of the shoe sole corresponding to the front stepping portions of both feet. This embossment has a large number of small irregularities formed on the ground contact surface, and prevents slipping at the sole of the shoe to stabilize body movement when the hammer is thrown.

(Problems to be solved by the invention) However, in the conventional athletic shoes of this kind, since the soles of the shoes are symmetrical, the movement of the left foot, which is the axial foot, in the hammer throwing competition in which the posture when throwing changes greatly However, there was a problem that it was not carried out smoothly and it affected the flight distance of the hammer.

That is, regarding the operation of throwing the hammer, first, the hammer is preliminarily turned twice with both feet landed, and then the rotation is started around the left foot. At this time, the ground contact portion of the left foot sequentially shifts to the entire surface, heel, outer side, outer front foot, front foot, entire surface. Then, after performing such a rotation operation three times,
Although the release is performed, almost the entire sole of the right foot touches the ground at the time of preliminary turning and at the time of release, and the sole corresponding to the front tread portion of the right foot touches the ground every revolution.

As is clear from such a throwing operation, in hammer throwing, the sole of the athletic shoe on the side of the shaft rotates and slides,
The soles of the sports shoes on the other side must be non-slip. But,
In the above-described conventional sports shoes for hammer throwing, since the same grain is provided on the ground contact surface side of each of the left and right soles, when the left foot is rotated and slid, the grain impedes the sliding and reduces the rotational force. It was For this reason, it is impossible to efficiently add centrifugal force to the hammer by speeding up the rotation operation before release, and there is a certain limit to extending the flight distance of the hammer by wearing this kind of sports shoes. It was

The present invention has been made in view of the above-mentioned problems, and paying attention to the body movement when throwing a hammer, the soles of the athletic shoes are not symmetrical, and the shaft foot side is easily rotated and the other side is not slippery. However, it is an object of the present invention to provide a sole of athletic shoes for throwing competition in which the flight distance of a hammer can be extended by smoothing the body motion during throwing as a whole.

(Means for Solving the Problem) In order to achieve the above-mentioned object, the present invention uses one foot as an axial foot, and on the ground contact surface side of the outsole of the sole corresponding to the front stepped portion of this axial foot, A plurality of annular protrusions or annular grooves with the second finger root portion of the shaft foot substantially at the center are arranged so that the radius becomes gradually larger to form a rotating portion, and the front foot step portion of the other foot is formed. It is characterized in that a plurality of protrusions or recesses of arbitrary shape are provided on the ground contact surface side of the outsole of the corresponding shoe sole to form a slip prevention portion.

(Operation) With the above structure, the sole of the athletic shoe according to the present invention has the rotating portion on the axial foot side and the slip preventing portion on the other foot side, and is not symmetrical to the left and right. When the body is swung around the axial foot when throwing, the rotating portion reduces the friction with the ground contact surface, and the rotational sliding is efficiently promoted. Therefore, the rotational speed of the body increases as the number of turns of the body increases, so that the centrifugal force of the hammer becomes large. Therefore, the speed of the hammer at the moment of release can be increased.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of the sole of an athletic shoe for the left foot when the present invention is applied to the sole of an athletic shoe for hammer throwing, FIG. 2 is a left side view of the sole, and FIG. 3 is the sole. FIG. FIG. 4 is a front view of the sole of the athletic shoe for the right foot, FIG. 5 is a left side view of the sole, and FIG. 6 is a right side view of the sole.

The soles A and B of this hammer throwing athletic shoe are the main body of the athletic shoe for the left athletic shoe (not shown) which is the axial foot when throwing.
And the athletic shoe body (not shown) of the athletic shoe for the right foot, which is the opposite side of the axial foot, respectively, and the left and right sides are formed asymmetrically.

The shoe sole A for the left foot has a flat sole 1 and has a large number of granular projections formed on the surface thereof. The outsole 1 is composed of an inner elastic member 1a corresponding to the vertical foot arch of the left foot and an outer elastic member 1b connected to the periphery of the inner elastic member 1a. The outer elastic member 1b is provided with a rotating portion 2. . The rotating portion 2 smoothes the movement of the axial foot, and substantially corresponds to the front stepping part A ₁ located near the metatarsal bone a ₁ of the left foot, and substantially centers the second finger root part a ₃ Is formed by arranging a plurality of annular protrusions 2a. Each of the annular protrusions 2a has a discontinuous portion 2b, and for example, four protrusions are provided in a circular shape at equal intervals from the central portion 2c with a gradually increasing radius. It should be noted that each annular protrusion 2a does not necessarily need to be provided with the discontinuous portion 2b, and may be a continuous annular protrusion 2a. Further, the rotating portion 2 has an annular protrusion 2a.
Instead of this, an annular groove may be formed in the outsole 1, and in any case, the number is not limited.

Further, the shoe sole A is an outsole 1 corresponding to the longitudinal arch of the left foot.
The outer edge 1d other than the inner edge 1c has a rolled-up structure (round), and the outer edge 1d is formed of a hard material so as to support the entire weight. Also, the calcaneus a ₂
In the rear stepping part A ₂ corresponding to the above, a heel side piece 3 for attaching the heel side wall part of the athletic shoe is extended. Then, on the heel side piece 3, the inner side 4 extending in the toe direction of the shoe sole A via the vertical foot arch portion and the outer side portion on the opposite side of the vertical foot arch portion similarly to the shoe sole. An outer side 5 extending in the direction of the toe of A is integrally formed. A chevron portion 5a is provided at the front portion of the outer side 5, while a chevron portion 4a is provided at the front portion of the inner side 4 at a position displaced from the chevron portion 5a.

Next, the sole B for the right foot, a front elastic member 6a corresponding to the front squished portion B ₁ of the outsole 6 is located near the metatarsal b ₁ of flat and right foot, rear trampling consists of a large number of granular protrusions rear elastic member 6b formed in the corresponding surface in part B _2, is provided with anti-skid parts 7 to the elastic member 6a. The anti-slip portion 7 is for preventing the right foot from slipping, and is formed by providing a large number of small-diameter circular protrusions 7a. The anti-slip portion 7 is a circular protrusion 7a.
Instead of this, it is possible to provide a large number of circular recesses in the outsole 6. Further, a heel side piece 8 for mounting the heel side wall of the athletic shoe is extendedly formed on the rear stepping part B ₂ corresponding to the calcaneus b ₂ . Then, on the heel side piece 8, an inner side 9 extending long in the toe direction of the shoe sole B via a vertical foot arch portion, and an outer side portion on the opposite side of the vertical foot arch portion to the shoe sole B. The outer side 10 extending in the direction of the toe is integrally formed. A chevron portion 10a is provided in the front part of the outer side 10, while a chevron portion 9a is also provided in the front part of the inner side 9 at a position displaced from the chevron part 10a.

Therefore, the athletic shoe for throwing a hammer provided with the left and right non-symmetrical soles configured as described above is intended to extend the flight distance of the hammer by making the movement of the athlete smooth and agile as described below. It is possible.

Next, the throwing motion of the hammer throw and the motion of the sports shoes will be described.

FIGS. 7-1 and 7-2 are explanatory views visually observing the movement of the axial foot together with the body movement when the hammer is thrown, and show the results of the experiment and investigation of the weight change applied to the sole of the foot. ing. In the figure, the ground contact portion of the shoe sole is indicated by diagonal lines.

First, the athlete M makes two preliminary turns of the hammer H while landing on both feet in the circle, and then starts to rotate around the left foot L. Subsequently, after performing such a rotation operation three times, release is performed (see FIGS. 7A to 7C and 7D to 7F). At this time, the ground contact portion of the left foot L sequentially shifts to the whole surface, heel, outer side, outer front foot, front foot, whole surface, but the left foot L rotates and rolls (FIG. 7-1 (b)). , (C)). That is,
At the time of rotation, the rotating portion 2 of the shoe sole body A reduces friction on the ground contact surface, so that rotation and sliding are smoothly performed (7th embodiment).
See FIG. 1 (c) to FIG. 7 (e). In addition, since the outer edge 1d is round when rolling, rolling is performed smoothly. Therefore, the movement of the whole body becomes flexible, and speed is added to the rotational movement.

On the other hand, with respect to the right foot R, the entire surface is grounded at the time of preliminary turning before rotation and at the time of release, and the front stepping part B ₁ is grounded at every rotation. At this time, since the front stepping portion B ₁ is provided with the slip prevention portion 7, the right foot R is prevented from slipping. Further, since the braking action of the body occurs at the time of release, the speed can be added to the hammer H when the centrifugal force reaches its peak. Therefore, it is possible to significantly increase the flight distance as compared with the case of using the conventional sports shoes.

That is, in a throwing motion, which generally involves turning the body, a gradual increase in speed occurs as each successive body motion is added to the sum of the speeds of previous motions. Even when the hammer H is thrown, the rotational speed of the body acts on the centrifugal force, and the speed of the hammer H at the moment of release becomes maximum if it is added in time with the peak speed of the preceding movement. Since the velocity of the hammer H and the flight distance have a mutual relationship,
If the release is performed at the time of shifting to the high speed rotation around the left foot L, the flight distance of the hammer H can be extended.

(Effect of the Invention) As described above, according to the present invention, the sole of the athletic shoe is not symmetrical, and the rotating portion provided on the ground contact surface side of the shoe sole on the axial foot side is the shaft when the hammer is thrown. It is possible to promote sliding during rotation of the foot, increase the rotational speed of the body, and increase the centrifugal force of the hammer. In addition, the anti-slip portion provided on the ground-contacting surface side of the shoe sole on the other side can stabilize the body by an anti-slip action and can brake the body at the time of release to increase the speed of the hammer. Therefore, the flight distance of the hammer can be significantly extended as compared with the conventional athletic shoe having the left and right symmetrical shoe soles.

[Brief description of drawings]

1 to 7 show an embodiment of the present invention.
The figure is a front view of the sole of the athletic shoe for the left foot, FIG. 2 is a left side view of the shoe sole, FIG. 3 is a right side view of the sole, and FIG. 4 is a front view of the sole of the athletic shoe for the right foot. , Fig. 5 is a left side view of the shoe sole, Fig. 6 is a right side view of the shoe sole, and Figs. 7-1 and 7-2 are the body movements when the hammer is thrown and the movements of the feet from below. FIG. A: Left shoe sole, B: Right shoe sole, A ₁ , B ₁ : Front tread, A
_2, B _2: rear squished unit, 1,6: the outsole, 2: rotary section, 7: anti-skid parts.

Claims (1)

[Scope of utility model registration request] 1. A first foot is an axial foot, and a second finger root of the axial foot is substantially centered on the ground contact surface side of the outsole corresponding to the front stepping portion of the axial foot. A plurality of annular protrusions or annular grooves are arranged so that the radius becomes gradually larger to form a rotating portion, and an arbitrary portion may be provided on the ground contact surface side of the outsole corresponding to the front stepping portion of the other foot. A sole of a sports shoe for throwing competition, comprising a plurality of projections or recesses each having a shape to form an anti-slip portion.