Pick ball special for match

Abstract

The utility model discloses a special match pike ball which comprises a hollow plastic ball body, a plurality of holes are arranged on the surface of the hollow plastic ball body, and the holes are arranged on vertexes of an Archimedes regular polyhedron which is overlapped with the center of the hollow plastic ball body and each vertex of the Archimedes regular polyhedron falls on the surface of the ball body. And the wind resistance of the Pick ball in various motion states can be greatly reduced, so that an athlete can better control the motion speed, the motion posture and the flight track of the Pick ball, and a better competition level and a better ornamental effect are achieved.

Description

Technical Field

[0001] This utility model relates to the field of pickballs, and more particularly to a pickball for competition. Background Technology

[0002] Traditional peaked ball structures typically consist of a hollow sphere with multiple holes evenly distributed on its surface, which can reduce wind resistance to some extent when the peaked ball is moving at high speeds. However, the hole layout in traditional designs does not fully consider the optimization of airflow, resulting in a very limited actual wind resistance reduction effect.

[0003] Given the above, the existing technology is still relatively imperfect. Therefore, it is necessary to study the aerodynamic low-drag competition-specific peak ball perforated ball structure to significantly reduce wind resistance in various motion states of the peak ball, making it easier for athletes to better control the speed, posture and flight trajectory of the peak ball, and achieve better competition level and viewing effect. Utility Model Content

[0004] This invention overcomes the shortcomings of the prior art and provides a competition-specific pick ball with a novel design and reasonable structure. By utilizing the vertices of an Archimedes regular polyhedron to create holes, it can more effectively reduce the wind resistance of the pick ball under different speeds, postures, and flight trajectories.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A competition-specific pick ball is characterized by comprising a hollow plastic sphere, the surface of which is provided with a plurality of holes, the holes being located at the vertices of an Archimedean regular polyhedron that coincides with the center of the hollow plastic sphere and whose vertices fall on the vertices of the sphere's surface.

[0007] The competition-specific pickball described above is characterized by having 40 holes, with 12 ventilation channels running through the center of the ball formed between some of these holes.

[0008] The competition-specific pickball described above is characterized by having 12 ventilation channels, including 4 main drag-reducing channels for strong ventilation and 8 attitude-stabilizing drag-reducing channels for maintaining the original flight state of the ball.

[0009] The competition-specific pickball described above is characterized by the following: the diameter of the hollow plastic sphere is in the range of 72.-73.4 mm, the shell thickness of the hollow plastic sphere is in the range of 1.9-2.1 mm, and the diameter of the hole is in the range of 6.85-7.15 mm.

[0010] The competition-specific pickball described above is characterized by: a hollow plastic sphere with a diameter of 73mm, a shell thickness of 2mm, and a hole diameter of 7mm.

[0011] The competition-specific pickball described above is characterized by having a hole diameter of 0.5 mm.

[0012] The competition-specific pickball described above is characterized by having a smooth outer surface and a single color on the hollow plastic ball.

[0013] The competition-specific pickball described above is characterized by the following: the out-of-roundness of the hollow plastic sphere is ≤3.5%.

[0014] The competition-specific pickball described above is characterized in that the hollow plastic ball has a mass range of 22.1g-26.5g.

[0015] The competition-specific pickball described above is characterized by: the average compressive force of the hollow plastic ball being <191.11N.

[0016] The beneficial effects of this utility model are:

[0017] This invention utilizes the openings at the vertices of an Archimedes polyhedron to more effectively reduce wind resistance in the pickball under different speeds, postures, and trajectories. This allows athletes to better control the speed, posture, and trajectory of the pickball, resulting in better performance and entertainment value. Through extensive testing and practical verification in three Guangdong Provincial Pickball Championships, the optimal technical solution combination was obtained: a pickball with 40 vertices of an Archimedes polyhedron and openings. This design has been implemented and promoted as a group standard of the Guangdong Provincial Association for the Promotion of the Transformation of Scientific and Technological Achievements. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external shape of the Archimedes regular polyhedron structure of this utility model;

[0019] Figure 2 This is a front view of the 40-hole pick ball of this utility model;

[0020] Figure 3 This is a top view schematic diagram of the 40-hole pick ball of this utility model;

[0021] Figure 4 This is a schematic diagram of the aerodynamic analysis model of the 40-hole pick ball of this utility model;

[0022] Figure 5 This is a schematic diagram of the aerodynamic analysis model of the 40-hole pick ball of this utility model;

[0023] Figure 6 This is a schematic diagram of the aerodynamic analysis model of the 40-hole pickball of this utility model. Detailed Implementation

[0024] The technical solutions in the embodiments of this utility model will now be clearly and completely described in conjunction with the accompanying drawings.

[0025] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indication will also change accordingly. Furthermore, descriptions involving "preferred," "second-best," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "preferred" or "second-best" may explicitly or implicitly include at least one of those features.

[0026] like Figure 1 As shown, the Archimedean polyhedron, also known as the equiangular semiregular polyhedron, is a special type of polyhedron. It is a convex polyhedron with two or more regular polygons as its faces, and all of them can be constructed from regular polyhedra through operations such as truncating, halving, and twisting. There are 13 Archimedean polyhedra in total, all of which have the same length on each side and all of the same vertex. Archimedes' polyhedron is named after Archimedes' research. All its polyhedrons have equal angles, and each face is a regular polygon with a different number of sides. An equiangular semiregular polyhedron has a maximum of five faces. A regular n-prism with square lateral faces is an equiangular semiregular (n+2)-hedra. Similarly, a polyhedron formed by taking the midpoints of the edges of a regular n-hedra (n=6 or 8, 12 or 20) as vertices is also an equiangular semiregular polyhedron. These are respectively called a cubic octahedron or central crystal (enclosed by six squares and eight equilateral triangles) and a dodecahedron and icosahedron (enclosed by twelve regular pentagons and twenty equilateral triangles).

[0027] like Figure 1-3As shown, a competition-specific pickball includes a hollow plastic sphere with several holes on its surface. These holes are located at the vertices of an Archimedean regular polyhedron on the sphere's surface, coinciding with the sphere's center. There are 40 holes in total, and some of these holes form 12 ventilation channels passing through the sphere's center, i.e., 12 sets of ventilation channels aligned vertically at 180 degrees between the two hemispheres. These 12 ventilation channels include 4 main drag-reducing channels for strong ventilation and 8 attitude-stabilizing drag-reducing channels to maintain the sphere's original flight state, ensuring a constant dynamic balance. This design allows air to enter the pickball from one side of the sphere during flight, pass through the internal space, and then exit from the other side, effectively reducing wind resistance regardless of whether the pickball tumbles.

[0028] like Figure 4-6 As shown, a wind field analysis model is established to simulate and analyze the wind speed distribution of the pick ball during high-speed flight, and then optimize the distribution and changes of the number of holes, hole diameter, and hole position of the pick ball, and find a relatively optimal solution.

[0029] In this case, the diameter of the hollow plastic sphere ranges from 72 to 73.4 mm, the shell thickness of the hollow plastic sphere ranges from 1.9 to 2.1 mm, and the diameter of the hole ranges from 6.85 to 7.15 mm. In actual use, the hollow plastic sphere has a diameter of 73mm, a shell thickness of 2mm, a hole diameter of 7mm, and a hole position accuracy diameter of 0.5mm. The sphere surface is smooth, without texture or obvious burrs, and the surface, except for the trademark, is a single, bright color, ensuring high visibility during high-speed movement. The sphere's out-of-roundness is ≤3.5%, calculated as: ∆=(Dmax-Dmin)*100% / Dmax, where ∆ represents the sphere's out-of-roundness, Dmax represents the maximum outer diameter in mm, and Dmin represents the minimum outer diameter in mm. When the hollow plastic sphere is dropped naturally from a height of 1981.0mm, its rebound height is 762.0mm~864.0mm, its mass is 22.1g-26.5g, and its average compressive force is <191.11N.

[0030] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A competition-specific pickball, characterized in that: It includes a hollow plastic sphere with several holes on its surface. The holes are located at the vertices of an Archimedean regular polyhedron that coincides with the center of the hollow plastic sphere and whose vertices fall on the vertices of the sphere's surface. There are a total of 40 holes, and some of the holes form 12 ventilation channels that pass through the center of the sphere.

2. A competition-specific pickball according to claim 1, characterized in that: The 12 ventilation channels include 4 main drag-reducing channels for strong ventilation and 8 attitude-stabilizing drag-reducing channels for maintaining the original flight state of the sphere.

3. A competition-specific pickball according to claim 1, characterized in that: The diameter of the hollow plastic spheres ranges from 72. to 73.4 mm, the shell thickness ranges from 1.9 to 2.1 mm, and the diameter of the holes ranges from 6.85 to 7.15 mm.

4. A competition-specific pickball according to claim 3, characterized in that: The hollow plastic sphere has a diameter of 73mm, a shell thickness of 2mm, and a hole diameter of 7mm.

5. A competition-specific pickball according to claim 3, characterized in that: The hole has a diameter of 0.5 mm.

6. A competition-specific pickball according to any one of claims 1-5, characterized in that: The hollow plastic ball has a smooth outer surface and is a single color.

7. A competition-specific pickball according to any one of claims 1-5, characterized in that: The out-of-roundness of hollow plastic spheres is ≤3.5%.

8. A competition-specific pickball according to any one of claims 1-5, characterized in that: The mass range of hollow plastic spheres is 22.1g-26.5g.

9. A competition-specific pickball according to claim 8, characterized in that: The average compressive force of the hollow plastic sphere is <191.11 N.

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