Sports utensil water cake

A water cake and utensil technology, which is applied to throwing equipment, sports accessories, etc., can solve the problems of small rising and sinking force of air, single shape of water cake, and no consideration of Bernoulli phenomenon of water surface tension. Achieving the effect of easy movement state and track, easy maintenance, and reduction of mold development and manufacturing costs

Inactive Publication Date: 2005-06-01
吴举杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the invention patent application of "a kind of sports equipment for water cake exercise" with the application number 02120935.9, the surface tension of water and the Bernoulli phenomenon in fluid mechanics were not considered at that time, so it was necessary to improve the water cake. Shape and structure to obtain more diverse movement effects of water cakes on the water surface
Moreover, the shape of the original disc-shaped oblate spheroid water cake is also single, and the water cake with a smooth surface undergoes less air rising and sinking force than the non-smooth water cake during movement.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1: The water cake in this embodiment is in the shape of a disc-shaped oblate spheroid, which is evenly thinner along the center to the surroundings. It is made of ABS plastic, with a density greater than water, a diameter of 6 cm, and a thickness of 1 in the center. cm, the thickness of the edge is 0.2 cm, and the edge is a smooth surface. The lower surface of the water cake has 150 small holes evenly distributed, and the average depth of each hole is about 0.02 cm. The small holes are round, like "dimples" "shape. The upper bottom surface of the water cake also has small cavities with the same distribution, the same number and the same shape as the lower bottom surface. After the water cake is thrown to the water surface, the water cake moves forward and rotates horizontally at the same time, so that the water cake with small concave holes can jump higher from the water surface than the water cake with a smooth surface, and the jumping distance is longer.

Embodiment 2

[0038] Embodiment 2: The difference between the water cake in this embodiment and the water cake in Embodiment 1 is that its upper and lower bottom surfaces each have 150 evenly distributed small protrusions, the small protrusions are circular, and each protrusion The average height is about 0.02 cm, like a "round cap" shape.

Embodiment 3

[0039]Embodiment 3: The difference between the water cake in this embodiment and the water cake in Embodiment 1 or 2 is that the upper half of the water cake is cut and separated from a height of 0.6 cm, and the central thickness of the water cake becomes 0.6 cm, and the upper bottom surface changes from the original curved surface to a plane. The movement effect of such water cake is different from the water cake of embodiment one and two.

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PUM

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Abstract

The present invention relates to water discus as one kind of sport equipment thrown to water surface and capable of colliding and flying on water surface. The water discus is made based on the surface tension of water and Bernoulli theorem in hydrodynamics, and may be cylinder, flat cylinder or flat ball. The bottom surface of the water discus may have notches, holes or lugs distributed homogeneously to make the water discus jump high and far.

Description

technical field [0001] The invention relates to a sports equipment water cake used for water cake movement in a throwing area on the water surface, that is, the equipment is thrown into the water and can touch and fly on the water surface. Background technique [0002] In the invention patent application of "a kind of sports equipment for water cake sports" with the application number of 02120935.9, a new type of sports item "water cake sports" is proposed, which combines discus sports and "water throwing". "The feature of the game is that it is a throwing sport, and the throwing area is a water surface. It replaces the stone flakes in the "Water Floating Game" with "water cakes". It is made of light materials such as plastic, and the surface is smoothed by painting. The diameter is between 1 cm and 50 cm, and the center thickness is between 0.1 cm and 20 cm. [0003] The following physics knowledge is also used in the present invention. Here is an explanation of the phys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A63B65/00A63B67/12
Inventor 吴举杰
Owner 吴举杰
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