JPH02224606A - Sports shoes - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to sports shoes used as tennis shoes and the like.

[Conventional technology]

Conventionally, sports shoes with soles made of rubber, etc. have been used as tennis shoes, but these tennis shoes are suitable for players with loose feet such as walking, running at medium speed, walking sideways, and sprinting. It is desirable that the tennis player be able to accurately respond to the movements of the player and easily perform various tennis plays.

[Problem to be solved by the invention]

However, traditional tennis shoes do not necessarily adequately accommodate the player's every foot movement.
In particular, the functions for high-speed running such as medium-speed walking and sprinting were insufficient, and as a result, players were sometimes unable to play as they desired.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide sports shoes that accurately correspond to all foot movements of a player and allow players to perform various footworks at high speed and reliably.

[Means and effects for solving the problem] In order to achieve the above object, the present inventor studied various footworks in tennis play, and developed a forward-leaning posture that is unique to tennis, such as sprinting and returning with the toes. In addition to focusing on footwork while leaning forward, we also investigated the structure of shoes that would allow smooth footwork while maintaining such a forward leaning posture. As a result, as shown in the experimental example described later, when the shoes are put on. If the difference in height between the toe and heel on the upper surface of the shoe sole, where the sole of the foot is placed, is set to 11 to 16 mm (hereinafter referred to as the heel height difference), the kicking force and propulsive force during running will improve, and the running speed will increase. I found that it was faster. That is, the present inventor indexed the kicking force of the foot and the dash time required to sprint a certain distance when performing footwork such as walking, walking at medium speed, walking sideways, and sprinting, and calculated these kicking forces. When we investigated the relationship between dash time and heel height difference, we found that conventional sports shoes have a heel height difference of about 9na empirically.

For this reason, it was not possible to obtain sufficient kicking force and dash time in various types of footwork, but by setting the heel height difference to 11 to 16 mm, it is possible to obtain the optimal kicking force and dash time in all types of footwork. At the same time, you can dash a certain distance faster,
The present invention was made based on the discovery that various tennis plays can be performed accurately and at high speed.

Therefore, the present invention provides sports shoes in which the difference in height between the toe part and the heel part on the upper surface of the sole is 11 to 16 mm, taking into account the kicking force and propulsive force during running. Shoes with different heel heights have never existed before.

In this case, if the heel height difference is smaller than 11 m+++, it will not be possible to obtain sufficient kicking force in various footworks, and if it is larger than 161 m, the forward lean will be excessive, making it difficult to perform smooth footwork. Note that the optimum heel height difference is approximately 13 mm.

[For production]

In the present invention, the heel height difference is set to 11 to 16 m, which is about 2 to 7 meters larger than conventional shoes, so the downward slope of the upper surface of the sole from the heel to the toe is larger than in conventional shoes, and therefore the ground The kicking force against the floor is increased, and the propulsive force is improved especially during the propulsion phase of walking and running, which allows all kinds of footwork to be performed reliably at high speed.

Next, the present invention will be specifically explained with reference to Examples, but the present invention is not limited to the following Examples.

〔Example〕

FIG. 1 shows a tennis shoe according to an embodiment of the present invention.

In the figure, 1 is the sole, and 2 is the instep. This tennis shoe has a height difference Q between the toe part 1a and the heel part 1b on the upper surface of the sole 1 of 11 to 16 mwi.

In this case, in the above embodiment, the heel height difference Q is adjusted by the shape of the sole 1, but the heel height difference Q may be adjusted using an insole or the like, and the adjustment means are not limited.

Next, an experimental example using the above tennis shoes will be shown.

[Experimental Example] Tennis shoes with various height differences were manufactured, and the relationship between the kicking force index and dash time index and the heel height difference was investigated when footwork was performed using these shoes. In this case, the kicking force index and dash time index were determined by the following method. The results are shown in Figures 2 and 3.
As shown in the figure.

The kicking force was measured using a force gauge and calculated using a heel height difference of 9m as 100.

The time required to dash from the baseline of the Da Steim tennis court to the net was measured, and the calculation was made with a heel height difference of 9 na as 100.

Figure 2 shows the relationship between the heel height difference and the kicking force at various running speeds.The kicking force increases as the heel height difference increases, especially when running at medium speeds and sprinting. It can be seen that the number increases significantly between the 13th and 15th cabinets.

On the other hand, the conventional heel height difference of about 9na resulted in a weak kicking force.

In addition, Figure 3 shows the dash time measured when using shoes with various heel height differences and converted into an index.Although there are individual differences, the heel height difference is 11 to 16 cm.
It can be seen that by doing so, the dash time is significantly shortened and the dash can be performed faster. In contrast,
Dash times were poor with the conventional height difference of about 9 meters.

〔Effect of the invention〕

As explained above, the sports shoes of the present invention have a heel height difference of about 9I [111 mm] to 11 to 16 mm.
By doing so, the kicking force and propulsion force are increased during all footwork, and the running speed is improved. Therefore, the sports shoes of the present invention are particularly suitable for sports such as tennis, which require moving at medium to high speeds over short distances, and can be used in all kinds of sports, such as being able to reach a destination faster or traveling further. Able to play quickly and accurately. In addition, the shoes of the present invention can be used for middle-aged and elderly Yoshikawa who have weakened muscle strength and have reduced propulsive force when walking or running, thereby improving kicking force and making walking and running easier. It is something.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view showing an embodiment of the present invention, FIG. 2 is a graph showing the relationship between heel height difference and kicking force index,
FIG. 3 is a graph showing the relationship between heel height difference and dash time index. 1... Sole, 1a... Toe part, 1b... Heel part, To... Heel height difference. Applicant Brideston Co., Ltd. Agent Patent Attorney Takashi Kojima Shigai Greed ≠ Yokiyo\ゼ・Ghe・! School torture i

Claims (1)

[Claims] 1. A sports juice characterized by forming a difference in height between the toe part and the heel part on the upper surface of the sole to be 11 to 16 mm.