Golf Club Head Face Asymmetry for Toe Restitution
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Solution Overview
Problem
Moving the center of gravity of a golf club head to the heel side to enhance ball grabbing reduces restitution performance on the toe side, which is undesirable.
Innovation Solution
A golf club head design with a face portion that has a wider peripheral portion on the toe side than the heel side, allowing for increased bending and improved restitution performance on the toe side, even when the center of gravity is moved to the heel side.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the center of gravity of the head is moved to the heel side to improve ball grabbing, then the grabbing performance is improved, but the restitution performance on the toe side decreases
Solution Approach 1:
The peripheral portion of the face portion is designed with non-uniform width: wider on the toe side and narrower on the heel side. This local variation in geometry allows the toe side to have enhanced bending capability for improved restitution, while the heel side maintains its structure for ball grabbing, thus resolving the contradiction between the two performance aspects.
Solution Approach 2:
The face portion's peripheral portion is intentionally made asymmetric in width distribution along the toe-heel direction. The wider width on the toe side compared to the heel side creates differential flexibility that compensates for the center of gravity shift, maintaining restitution performance while achieving improved ball grabbing.
2Strength
If the width of the peripheral portion on the toe side is increased to improve restitution performance, then the restitution performance is improved, but the device complexity increases
Solution Approach 1:
The face portion is segmented into a base portion and a peripheral portion, with the peripheral portion further having differentiated width characteristics. This segmentation allows independent optimization of different regions: the base portion provides structural support while the peripheral portion's variable width specifically addresses restitution requirements without overcomplicating the entire face structure.
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 design prevents a reduction in restitution performance on the toe side, thereby maintaining or improving ball grabbing and flight-distance while optimizing the center of gravity position for better ball contact.
Implementation Method 1
the width on the toe side in a plan view is made longer in a peripheral portion provided on a face portion, thus making it possible to increase the amount of bending of the face portion on the toe side when hitting a ball
Data Source
AI summary
A golf club head according to the present invention includes a golf club head body that has a crown portion, a sole portion, and a side portion, and has an opening surrounded by the crown portion, the sole portion, and the side portion; and a face portion that blocks the opening of the golf club head body. The face portion is shaped as cup that has a base portion shaped as a flat plate and a peripheral portion that extends from a periphery of the base portion. With respect to the face-back direction, the width of the peripheral portion on the toe side in a plan view is longer than the width of the peripheral portion on the heel side in a plan view.