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Tennis shoes

A tennis and friction coefficient technology, applied in the field of tennis shoes, can solve the problem that the anti-skid performance and sliding performance of tennis shoes cannot be fully coordinated, and achieve the effect of good anti-skid performance and good sliding performance.

Inactive Publication Date: 2005-11-02
DUNLOP SPORTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The tennis shoes disclosed in the above-mentioned patent publications do not have sufficient coordination between the anti-slip performance and the sliding performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0103] A rubber compound containing styrene-butadiene copolymer is put into a mold as a base material to undergo rubber cross-linking reaction. In this way a sole is obtained. The pattern on the underside of the sole is as figure 2 shown in . The sole has a large number of transverse ridges formed thereon. The inclination angle θa of these transverse ridges was 30 degrees, the inclination angle θb was 90 degrees, the height H was 3 mm, and L2 / L1 was 0.25. A tennis shoe according to Example 1 is obtained by attaching a midsole made of ethylene-vinyl acetate copolymer and an upper made of cotton to the sole.

example 2 and 3， and comparative example 1 and 2

[0105] Tennis shoes according to Examples 2 and 3 and Comparative Examples 1 and 2 were obtained in the same manner as Example 1 except that the mold was changed and a sole including transverse ridges taking the shapes shown in Table 1 below was formed.

example 4

[0107] Tennis shoes according to Example 4 were obtained in the same manner as Example 1 except that the mold was changed and a sole including transverse and longitudinal ridges taking the shapes shown in Table 1 below was formed. The pattern of the sole is as Figure 7 shown in .

[0108] [Actual use test]

[0109] A player is put on tennis shoes, and a tennis match is played on an artificial turf court covered with sand (trademark "OMNICOURT", manufactured by SUMITOMO RUBBERINDUSTRIES, INC.). The ease of changing direction, the anti-slip performance at the start, the sliding performance and the feeling of fatigue of the legs were evaluated on a five-point scale from "1" to "5". The highest rating is a rating of "5". Table 1 below shows the average ratings for the 10 athletes. As shown in Table 1, the outer soles according to each example had excellent evaluation results in all items.

[0110] Comparative example 1

[0111] [Experiment 2]

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Abstract

Tennis shoes, comprising soles (5) having bases (7) and a large number of horizontal reinforcement crests (9), the horizontal reinforcement crests (9) further comprising ground-contact surfaces (11), toe side wall surfaces (13), and heel side wall surfaces (15), wherein the cross sectional shape of the horizontal reinforcement crests (9) is asymmetric, the tilted angle ([theta]b) of the heel side wall surfaces (15) is larger than the tilted angle ([theta]a) of the toe side wall surfaces (13), a difference therebetween ([theta]b - [theta]a) is 10 to 60 DEG , the height (H) of the horizontal reinforcement crests (9) is 1 to 8 mm, the ratio (L2 / L1) of the distance (L2) of the ground-contact surfaces (11) to a distance (L1) of a boundary part between the bases (7) and the horizontal reinforcement crests (9) is 0.2 to 0.8, and the ratio ( mu a / mu b) of the coefficient of friction ( mu a) of a bottom surface in toe direction to the coefficient of friction ( mu b) in heel direction is 0.3 to 0.9.

Description

technical field [0001] The invention relates to a tennis shoe. More particularly, the present invention relates to improvements to the sole surface of tennis shoes. Background technique [0002] In tennis, players move quickly across the court and slap the tennis ball. The player predicts the direction of the opponent's shot and moves towards the target point. Athletes run with their feet on the ground. When approaching the target point, the athlete stops pushing off and regains balance to find the point of impact. Next, the athlete's foot slides across the ground while the body moves forward a small distance as the slide slides. Most of the athlete's running to the goal point is done by kicking, and the final stage of the movement is sliding. The athlete reaches the target point and then swings the racket to hit the ball. Next, the athlete turns around and kicks off the ground again, thus running to the next target point. [0003] It is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A43B5/10
Inventor 小林和彦
Owner DUNLOP SPORTS CO LTD
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