Golf Club Head Body Missing Portion for Rebound
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Solution Overview
Problem
Existing golf club heads do not adequately enhance rebound performance due to limitations in design, particularly with regards to the distribution of weight and the rigidity of the body member, which restricts the deformation of the face member during impact.
Innovation Solution
The design incorporates a body missing portion between the toe and heel joint portions of the body member and a top-side flange in the face member, reducing the weld bead formation and the overall rigidity of the body member, allowing for increased deformation and improved rebound performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the body member is made more rigid to maintain strength, then structural integrity is improved, but the face member deformation during impact is restricted, reducing rebound performance
Solution Approach 1:
The body member is segmented by introducing a body missing portion that divides the body into a toe-side body portion and a heel-side body portion. This segmentation allows different regions to have different rigidity characteristics, enabling the face member to deform more freely for improved rebound while maintaining overall structural integrity through the distributed mass of the segmented body portions.
Solution Approach 2:
The body missing portion creates a local region with reduced mass and altered rigidity characteristics. This local modification allows the face member to deform more effectively during impact in the region corresponding to the body missing portion, while the toe-side and heel-side body portions maintain sufficient structural support, achieving localized optimization of rebound performance.
2Weight of moving object
If the body member mass is reduced to lower the center of gravity, then launch angle control is improved, but the overall strength and stability of the club head may be compromised
Solution Approach 1:
The body missing portion is positioned asymmetrically in the toe-side region of the face member, creating an uneven mass distribution that lowers the center of gravity toward the sole. This asymmetric design allows selective mass reduction in the toe-side area while maintaining sufficient mass in the heel-side region, achieving center of gravity control without compromising overall club head stability.
Solution Approach 2:
Rather than uniformly reducing mass throughout the body member, the invention strategically removes material in a specific spatial dimension (the body missing portion between toe and heel joint portions). This dimensional approach to mass distribution allows precise control of the center of gravity position while preserving structural strength through the distributed mass of the toe-side and heel-side body portions.
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
This configuration enhances rebound performance by allowing the face member to bend more freely, while maintaining strength and reducing casting deformation, resulting in improved performance across a wide range of hit points.
Implementation Method 1
allowing for increased deformation and improved rebound performance
Data Source
AI summary
A head 2 includes: a face member fc1 having a hitting surface 4; and a body member bd1 having a hosel 6, a sole surface 8, and a toe-side surface 9. The face member fc1 further has a top-side flange FL1 including a top surface 5. The body member bd1 has a hosel-forming part 24 including the hosel 6, a sole-forming part 28 including the sole surface 8, and a toe-forming part 26 including the toe-side surface 9. The hosel-forming part 24 has a heel joint portion Jh joined to a heel-side end of the top-side flange FL1. The toe-forming part 26 has a toe joint portion Jt joined to a toe-side end of the top-side flange FL1. A body missing portion ms1 in which the body member bd1 is not present is provided between the toe joint portion Jt and the heel joint portion Jh.