Golf Club Head Rib Segmentation for Vibration Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Golf club heads designed for high moment of inertia produce a low and muffled hitting sound due to deformation and vibration of the crown and sole during impact, which is not effectively addressed by existing rib structures.
Innovation Solution
A golf club head with a hollow space featuring a rib that extends from the inner surface of the sole to the crown via the side, cast integrally with these components, increasing the rigidity and natural frequency by reducing the area of vibration and shifting the center of gravity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the head volume is increased to its limits within the range of specified weight, then the moment of inertia is improved, but the wall thickness of head decreases and the natural frequency decreases, producing a low and muffled hitting sound
Solution Approach 1:
The internal cavity is divided into multiple regions by adding ribs that extend from the sole to the crown, segmenting the hollow space to increase structural rigidity without adding significant weight, thereby maintaining high moment of inertia while improving natural frequency and hitting sound quality
Solution Approach 2:
Ribs are strategically positioned at specific locations within the head cavity where they provide maximum structural reinforcement. The ribs have varying thicknesses (1-4mm) and lengths (30-70mm) optimized for local reinforcement needs, strengthening the crown and sole areas most responsible for vibration characteristics while preserving overall weight distribution for high moment of inertia
2Stability of the object's composition
If the head is made large and flat to produce a high moment of inertia, then the moment of inertia is improved, but the crown and sole vibrate greatly at the time of impact, producing a low and muffled hitting sound
Solution Approach 1:
The cavity space is segmented by ribs into multiple compartments, which restrains the vibration of the crown and sole by creating internal structural support. This segmentation prevents excessive vibration while preserving the large, flat head geometry needed for high moment of inertia
Solution Approach 2:
The head combines a hollow cavity structure with integrated rib reinforcements, creating a composite structural system that leverages the weight-saving benefits of hollow construction while the rib structures provide vibration damping and structural strength, enabling both high moment of inertia and vibration resistance
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 solution enhances the hitting sound quality by increasing the moment of inertia and natural frequency, resulting in a more pleasing sound even when the head is made large and flat.
Implementation Method 1
the rib provided in the hollow space of the golf club head is provided so as to extend from the inner surface of the sole part to the inner surface of the crown part via the side part, and the rib is molded integrally with the sole part, the crown part, and the side part by casting. Thereby, the rigidity of the sole part and the crown part is increased remarkably
Implementation Method 2
the rib is cast integrally with at least a part of the sole part, at least a part of the crown part, and at least a part of the side part... the natural frequency is increased... since the sole part and the crown part are fixed firmly to each other by the rib, the area of a portion that vibrates freely at the time of impact with a golf ball decreases, so that the wavelength decreases, that is, the frequency increases
Data Source
AI summary
A golf head club has a high moment of inertia and thus produces a pleasing hitting sound. A metallic golf club head 1 having a hollow space therein includes a face member 30 provided with a face part 31, and a body member 10 provided with a sole part 11, a crown part 12, a side part 13, and ribs 20. The hollow space is defined by the inner surfaces of the face part 31, the sole part 11, the crown part 12, and the side part 13, and the wall surfaces of the ribs. The ribs 20 extend from the inner surface of the sole part 11 to the inner surface of the crown part 12, and the body member 10 is molded integrally by casting.