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Tennis racket bounce angle tester

A tennis racket and tester technology is applied to an instrument for accurately measuring the rebound angle value of a tennis racket.

Inactive Publication Date: 2014-09-17
SHENZHEN ACAD OF METROLOGY & QUALITY INSPECTION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims at the problems existing in detecting the bounce angle of tennis rackets according to QB / T 2769-2006 "Tennis Rackets" in the past, and provides an instrument that can directly and accurately record the rebound angle of tennis rackets, and solves the problem of measuring tennis rackets without special equipment in the past. The disadvantage of inaccurate data when rebounding angle value

Method used

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] as attached figure 1 As shown, the tennis racket bounce angle tester includes the following components: protractor 1, T-shaped striker 2, pointer 3, impact hammer 4, column 5, hand wheel 6, right splint 7, left splint 8, base 9, sleeve 10 and Hand lever11. According to the requirements of QB / T 2769-2006 "Tennis Racket", the diameter of the spherical surface of the impact hammer 4 is 50mm, the mass is 640g, and the distance between the axis of the spherical surface of the impact hammer 4 and the symmetrical point of the protractor 1 is 400mm. The four jiaos of base 9 have four screw holes, and the present invention is fixed on the ground by expansion bolts, so that it has good stability. The lower end of the column 5 and the base 9 are fixed by bolts. The pointer 3, the impact hammer 4, the T-shaped striker 2 and the protractor 1 are c...

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Abstract

The invention provides a tennis racket bounce angle tester, and relates to the field of testing for sports instruments. The tennis racket bounce angle tester comprises a base, a left clamping plate, a right clamping plate, a hand wheel, a vertical post, a sleeve, a handle, a protractor, a pointer, a T-shaped striker and an impact hammer. By the tennis racket bounce angle tester, the important index, namely the tennis racket bounce angle value, which is used for evaluating motor functionality of tennis rackets, can be acquired visually and accurately, the actual problem that tested data of tennis racket bounce angles are inaccurate due to absence of special instruments at present is solved, and the process of testing a tennis racket bounce angle according to standards of Tennis Racket QB / T2769-2006 is optimized. The tennis racket bounce angle tester is high in structural stability, easy and convenient to operate and accurate in test results.

Description

technical field [0001] The invention relates to a testing instrument for sports equipment, in particular to an instrument capable of visually and accurately measuring the rebound angle value of a tennis racket. Background technique [0002] When inspecting the bounce angle of tennis rackets according to QB / T 2769-2006 "Tennis Rackets", in the past, inspectors usually fixed the tennis racket on the bracket according to the schematic diagram in the standard, impacted the string surface with the swing ball, and observed the bounce angle of the swing ball to obtain this indicator. The disadvantage of this process is that different inspectors judge the maximum bounce angle of the swing ball differently, which leads to large dispersion of test results, and it is difficult to obtain the bounce angle accurately. The rebound angle value of a tennis racket is one of the important indicators to evaluate the quality of a tennis racket, and its size will directly affect the sports funct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A63B51/00G01B21/22A63B60/42A63B102/02
Inventor 何益壮李大圣
Owner SHENZHEN ACAD OF METROLOGY & QUALITY INSPECTION
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