Racket Frame Face Portion Through-Hole Configuration for Spin
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Solution Overview
Problem
Existing racket frames and rackets do not adequately enhance the spinning performance of partial regions of the face portion compared to conventional designs.
Innovation Solution
A racket frame design featuring a face portion with specific configurations of through-holes, where the first part includes through-holes with varying widths and spacings, and the second part is disposed apart from the first part, optimizing string movement and spin performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the face portion is designed with uniform through-holes, then the manufacturing is simple, but the spinning performance is insufficient
Solution Approach 1:
The patent applies local quality by creating different through-hole configurations in different regions of the face portion. The first region has through-holes with first dimensions that allow greater string movement for enhanced spin performance, while the second region has through-holes with second dimensions that maintain stability. This regional differentiation optimizes spinning performance in specific areas without compromising overall structural integrity.
Solution Approach 2:
The face portion is segmented into multiple regions with distinct through-hole patterns. By dividing the face portion into regions with different through-hole characteristics, the patent enables independent optimization of spin performance in certain areas while maintaining structural stability in others, resolving the contradiction between performance enhancement and manufacturing complexity.
2Manufacturing precision
If string is designed to move easily along the batting surface, then spin performance improves, but repulsion performance deteriorates
Solution Approach 1:
The patent resolves this contradiction by applying local quality through regional differentiation of through-hole characteristics. In the first region, through-holes are configured to permit greater string movement along the batting surface, enhancing spin performance. In the second region, through-holes are configured to restrict string movement, maintaining repulsion performance. This spatial variation allows both performance metrics to be optimized in their respective regions.
Solution Approach 2:
By segmenting the face portion into distinct regions with different through-hole properties, the patent enables the string bed to exhibit different mechanical behaviors in different areas. The segmentation allows simultaneous optimization of spin characteristics in one region and repulsion characteristics in another, eliminating the need to choose between conflicting performance requirements.
Data Source
AI summary
A racket frame includes a face portion and a grip portion that are arranged side by side in a first direction. Face portion includes a first part including a first end located on a side opposite to grip portion in first direction and a second part including a second end located on a side of grip portion, second part being disposed apart from first part. A plurality of first through-holes that extend along first direction and are arranged at intervals in a second direction are formed in first part. The plurality of first through-holes include a first hole closest to a center of first part in second direction and a second hole located on an opposite side of the center with respect to first hole. In a third direction intersecting with first direction and second direction, a width of first hole is larger than a width of second hole.