Golf Ball Surface Divided by Small Circles for Dimple Arrangement
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Solution Overview
Problem
Existing golf balls with dimples arranged on spherical polyhedrons divided by great circles have larger land surfaces, affecting lift force and flight distance, and require costly mold cavities with varying dimple diameters impacting airflow and flight performance.
Innovation Solution
Dimples are arranged on a golf ball surface divided by small circles, with spherical polygons near the equator further divided by great circles, using a spherical polyhedron composed of regular pentagons, hexagons, trapezoids, and pentagons to minimize land surfaces and enhance symmetry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the surface of a golf ball is divided by great circles into spherical polyhedrons, then dimples can be symmetrically arranged, but the land surface area increases reducing lift force and flight distance
Solution Approach 1:
The patent divides the spherical surface into multiple zones using both great circles and small circles, creating a segmented structure with polar regions, equatorial regions, and intermediate regions. This segmentation allows for more efficient space utilization compared to traditional great circle division, reducing land surface area while maintaining symmetric dimple arrangement through coordinated use of different circle types.
Solution Approach 2:
The patent introduces asymmetric elements by combining great circles with small circles in the surface division scheme. The small circles create asymmetric zones relative to the traditional great circle-based spherical polyhedrons, allowing for optimized dimple placement that reduces land surface area while preserving overall symmetry through the coordinated arrangement of different zone types.
2Area of stationary object
If multiple types of dimples with varying diameters are arranged on spherical polyhedrons, then coverage can be improved, but manufacturing cost increases due to complex mold cavities
Solution Approach 1:
The patent applies local quality by assigning different dimple configurations to different zones of the golf ball surface. The polar regions, equatorial regions, and intermediate regions each have optimized dimple arrangements suited to their specific locations. This zone-based approach improves overall dimple coverage and flight performance while using standardized dimple types that can be manufactured with fewer mold cavity variations.
Solution Approach 2:
The patent optimizes dimple parameters (such as diameter, depth, and spacing) within each zone to achieve maximum coverage and flight performance. By carefully selecting and adjusting these parameters across different zones, the patent improves dimple coverage while potentially reducing the number of distinct dimple types required, thereby simplifying mold cavity requirements.
3Area of stationary object
If dimples of different diameters are used to reduce land surface area, then lift force may improve, but flight performance becomes unpredictable due to varied airflow patterns
Solution Approach 1:
The patent optimizes dimple characteristics for specific zones (polar, equatorial, intermediate) to reduce land surface area while maintaining predictable airflow. Each zone's dimple configuration is tailored to its location, creating consistent local airflow patterns that collectively produce reliable overall flight performance.
Solution Approach 2:
By segmenting the surface into distinct zones with zone-optimized dimple arrangements, the patent creates predictable airflow patterns in each region. The segmented approach allows for controlled variation in dimple characteristics while maintaining overall flight performance consistency through systematic zone-based optimization.
Data Source
AI summary
Provided is a golf ball having a surface divided by small circles. A surface of a sphere is divided by small circles to generate spherical polyhedrons in order to arrange dimples in the spherical polygons, instead of arranging dimples in spherical polyhedrons that are generated by dividing the surface of the sphere by great circles. According to one or more exemplary embodiments, a land surface of the golf ball, which is generated by arranging the dimples in the spherical polyhedrons, has a dimple area ratio higher than that of a spherical truncated icosahedron of which a surface is divided by great circles on which dimples are arranged. Therefore, a flight distance of the golf ball increases.