Golf Club Crown Recess and Step Surface for Loft Angle
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Solution Overview
Problem
Current golf club heads lack a structure that effectively enhances various performance metrics such as loft angle, backspin, and alignment, particularly in upper-side hitting, due to limitations in crown design.
Innovation Solution
A golf club head design featuring a recess part on the crown that extends in the toe-heel direction, a step surface continuous with the recess part, and a filler inside the recess, which promotes deformation and increases loft angle, backspin, and improves alignment characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional crown structure is used, then the golf club head is simple in design, but it cannot effectively enhance loft angle, backspin, and alignment in upper-side hitting
Solution Approach 1:
The crown is divided into multiple functional regions: a recess part extending in the toe-heel direction, a step surface positioned at the front of the back part, and a filler element. This segmentation allows each region to perform specific functions - the recess part promotes deformation for loft angle enhancement, the step surface provides alignment guidance, and the filler maintains structural integrity while enabling controlled crown flex during impact.
Solution Approach 2:
Different portions of the crown are given different local properties through the recess part and step surface configuration. The recess part creates a localized deformation zone that enhances loft angle specifically for upper-side hits, while the step surface provides localized alignment guidance. This local quality differentiation allows the crown to perform multiple functions simultaneously without requiring complete structural complexity throughout.
2Strength
If the crown is made rigid to maintain structure, then manufacturing is easier, but deformation is limited reducing loft angle and backspin generation
Solution Approach 1:
The crown's mechanical properties are optimized by changing geometric parameters - the recess part depth, step surface height, and filler material properties. These parameter changes allow the crown to achieve optimal deformation characteristics during impact while maintaining sufficient structural strength. The recess part geometry is specifically designed to control the duration and magnitude of crown deformation, enhancing loft angle and backspin generation without compromising overall structural integrity.
3Reliability
If the recess part extends deeply to maximize deformation, then loft angle and backspin increase, but the center of gravity position is affected
Solution Approach 1:
The filler acts as an intermediary element within the recess part, mediating between the deformation-enhancing function and the center of gravity maintenance function. The filler material and its positioning are optimized to allow controlled crown deformation for backspin generation while minimizing adverse effects on center of gravity position. This intermediary approach enables the recess part to extend sufficiently deep for maximum deformation without permanently shifting the center of gravity adversely.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design enhances launch angle, backspin, and alignment, providing improved performance in upper-side hitting by allowing greater deformation of the crown and reducing backspin loss, while maintaining a low center of gravity for better shot control.
Implementation Method 1
promotes deformation and increases loft angle, backspin
Data Source
AI summary
A head h1 includes a crown c1, a sole s1, a face f1 and a hosel h1. The crown c1 includes a recess part RE1, a back part 100 positioned at a back of the recess part RE1, and a step surface ST1 positioned at a front of the back part 100 and positioned above a virtual extension surface HF1 of the back part 100. At least a part of the recess part RE1 extends in a toe-heel direction. At least a part of the step surface ST1 extends in the toe-heel direction. At least a part of the recess part RE1 may extend in a front-back direction.