Semi-open one-piece tennis ball for teaching

A one-piece, semi-open technology, applied in ball games, sports accessories, etc., can solve problems such as affecting teaching efficiency, consuming manpower or time, and achieving the effect of improving teaching efficiency and preserving coaches' physical fitness.

Active Publication Date: 2021-06-29
HUNAN FIRST NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, during teaching, tennis is generally slapped. After the action is completed, either a special person will pick up the ball, or the ball will be picked up by oneself, which undoubtedly consumes more manpower or time, and affects teaching efficiency.

Method used

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  • Semi-open one-piece tennis ball for teaching
  • Semi-open one-piece tennis ball for teaching
  • Semi-open one-piece tennis ball for teaching

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0044] see Figure 1 to Figure 3 , a semi-open one-piece tennis ball for teaching, including a sphere 1, and a wrist cover used with the sphere 1, a magnetic rope 2 is connected between the wrist cover and the sphere 1, and a pair of symmetrical about the center of the sphere is opened on the sphere 1 A flaring groove 101 is formed on the inner wall of the flaring groove 101 close to the center of the ball. A threaded groove 102 is formed on the inner wall of the flaring groove 101. One end of the magnetic rope 2 is fixedly connected with a joint 3, and the joint 3 is threadedly connected to the inside of the threaded groove 102. The wrist sleeve includes a sleeve 4 , the upper and lower ends of the sleeve 4 are fixedly connected with an elastic sleeve 5, and the entire wrist sleeve can be stably worn on the wrist through the elasticity of the elastic sleeve 5 ( figure 1 The inner diameter of the sleeve 4 is larger than that of an average adult man’s wrist, the side end of the...

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PUM

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Abstract

The invention discloses a semi-open one-piece tennis ball for teaching, which belongs to the field of tennis teaching. The tennis ball comprises a ball body and a wristlet matched with the ball body for use, a magnetic rope is connected between the wristlet and the ball body, and a pair of flaring grooves symmetrical about the center of the ball is formed in the ball body. Threaded grooves are formed in the inner walls, close to the ball center, of the flaring grooves. One end of the magnetic rope is fixedly connected with a connector. The ball body is connected with the wristlet through the magnetic rope, the mode that the wristlet is worn on the wrist is adopted, the ball body is in a semi-open state, on one hand, the smooth slapping of the ball body can be achieved, normal use of the ball body is guaranteed, on the other hand, after the ball body is slapped out, the ball body can be picked up in situ by operating the wristlet, so that time and labor are saved, the physical ability of a coach is saved, and the coach can continue to carry out teaching explanation during the automatic picking-up period, so that the teaching efficiency is greatly improved.

Description

technical field [0001] The invention relates to the field of tennis teaching, more particularly, to a semi-open one-piece tennis for teaching. Background technique [0002] Tennis is one of the ball sports. The effective tennis court is a rectangle with a length of 23.77 meters. The width of the singles court is 8.23 ​​meters and the width of the doubles court is 10.97 meters. There is a net in the middle, each side of the game occupies one side of the court, and the players hit the ball with a tennis racket. [0003] In the current tennis teaching courses, most of the coaches degrade and perform demonstration movements while the students follow the imitation; or the coaches feed the ball, the students return the ball, and cooperate with the explanation at the same time. Therefore, when teaching, we usually slap the tennis ball. After finishing the action, either special personnel will pick up the ball or pick it up by ourselves, which undoubtedly consumes a lot of manpower...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A63B69/38A63B47/02
CPCA63B69/38A63B69/385A63B47/021
Inventor 孙华雷蕾孙侠
Owner HUNAN FIRST NORMAL UNIV
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