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Musical whistle for physical education

A sports and whistle technology, used in whistle, sounding equipment, instruments, etc., can solve the problems of cavity change in the resonance cavity, rapid movement of the ball, limited roundness of the whistle, etc., to improve the thrust effect and increase the resonance space. , better resonance effect

Active Publication Date: 2017-02-22
南通科曼体育用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the process of physical education teaching, the whistle is a basic product, mainly used for issuing orders; the traditional whistle includes a mouthpiece and a resonance chamber, and the airflow blown into the whistle from the mouthpiece is sharpened at the connection between the mouthpiece and the resonance chamber. Split and tear apart, one part flows out from the air outlet above the resonance cavity, and the other part enters the resonance cavity, making the ball in the resonance cavity shake continuously to continuously change the cavity shape of the resonance cavity, so that the resonance frequency changes continuously to avoid whistle A monotonous, high-pitched sound that is hard on the ear
However, the current whistle ball has a very symmetrical shape, which results in a limited effect of wind force on the ball, and more airflow bypasses the ball and does not affect the displacement of the ball, so it is impossible to make the ball produce a large amount of rapid movement. Movement makes it difficult for the shape of the cavity in the resonant cavity to change rapidly and greatly; therefore, the roundness of the whistle is still relatively limited, and it is necessary to further reduce the sharpness of the whistle to make it more pleasing to the ear

Method used

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  • Musical whistle for physical education
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Experimental program
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Effect test

Embodiment 1

[0012] exist figure 1 In the first shown embodiment, the melodious sports whistle includes a mouthpiece 1, and the mouthpiece 1 is connected to a resonant cavity 2 with a circular longitudinal section; the connection between the mouthpiece 1 and the resonant cavity 2 is fixed with a pointed Chopping block 3, and resonance chamber 2 has an air outlet 20 at the rear and top of wedge block 3; said resonance chamber 2 is provided with a movable ball 4; the inside of said movable ball 4 is a hollow cavity, and the movable small ball The ball 4 is provided with an air inlet hole 40 .

[0013] When the above-mentioned melodious sports whistle is blowing, more of the airflow entering the resonance chamber 2 will enter the hollow cavity of the movable ball 4, thereby greatly improving the thrust effect on the movable ball 4, and at the same time basically does not affect the movement of the small ball. The resistance of the ball 4 and the inner wall of the resonance chamber 2 enables ...

Embodiment 2

[0015] for figure 2 The second embodiment shown is different from the first embodiment in that an inner sphere 5 is provided inside the movable ball 4 , and the diameter of the inner sphere 5 is larger than the diameter of the air inlet hole 40 . According to this scheme, the inner sphere 5 can continuously change the spatial shape of the hollow cavity in the hollow cavity of the movable ball 4, so that the shape of the resonance space inside and outside the movable ball changes at the same time, making the overall shape of the resonance space more perfect. To be rich and changeable, and to change more quickly, to further improve the sound quality of the whistle; the inner sphere 5 is also a hollow ball, so that it is light in weight and easy to move.

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Abstract

The invention provides a musical whistle for physical education. The musical whistle includes a whistle mouth, and the whistle mouth is connected with a resonant cavity with a circular vertical section; a sharp separation block is fixed at the connection position of the whistle mouth and the resonant cavity, and a vent hole is formed in the portion, at the rear upper portion of the sharp separation block, of the resonant cavity. A movable and small ball is provided in the resonant cavity, the inside of the movable and small ball is a hollow cavity, and air inlet hole is formed in the movable and small ball. The sound generated by the musical whistle for physical education has a higher degree of roundness and the whistle is more tuneful than a traditional whistle.

Description

technical field [0001] The invention relates to the field of sporting goods, in particular to a melodious sports whistle. Background technique [0002] In the process of physical education teaching, the whistle is a basic product, mainly used for issuing orders; the traditional whistle includes a mouthpiece and a resonance chamber, and the airflow blown into the whistle from the mouthpiece is sharpened at the connection between the mouthpiece and the resonance chamber. Split and tear apart, one part flows out from the air outlet above the resonance cavity, and the other part enters the resonance cavity, making the ball in the resonance cavity shake continuously to continuously change the cavity shape of the resonance cavity, so that the resonance frequency changes continuously to avoid whistle The monotonous and high-pitched sound is difficult for the ears to accept. However, the current whistle ball has a very symmetrical shape, which results in a limited effect of wind ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K5/00
CPCG10K5/00
Inventor 朱小菊
Owner 南通科曼体育用品有限公司
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