Golf Club Head Crown Protrusion Grinding Alignment

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Solution Overview

Problem

Conventional golf club heads with carbon fiber reinforced polymer crowns face aesthetic issues due to damage during grinding, leading to a decrease in exposed carbon fiber area and compromised appearance, as the lack of clear indication for the grinding region results in unintended texture damage.

Innovation Solution

A golf club head design featuring a receiving slot with a protrusion having a distinct to-be-ground surface that aligns with the outer shell surface, preventing damage during grinding and maintaining the aesthetic quality by allowing a larger area of the composite material's texture to be visible.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the crown thickness is increased to ensure flush alignment with the club head main body, then the structural integrity is improved, but the exposed area of carbon fiber texture is reduced and aesthetic quality deteriorates

Engineering Contradiction:

Improvestructural integrityVSAvoidexposed area of carbon fiber

Core Design Contradiction:

StrengthVSArea of stationary object

Solution Approach 1:

The crown is divided into two functional regions: a thicker adhering portion for structural integrity and joining with the club head main body, and a thinner exposing portion for displaying carbon fiber texture. This segmentation allows each region to optimize its thickness for its specific function without compromising the other.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different thicknesses are applied to different regions of the crown based on local functional requirements. The adhering portion has increased thickness for strength and alignment, while the exposing portion maintains reduced thickness to maximize carbon fiber visibility and aesthetic appeal.

Inventive Principle:

Principle #3Local quality

2Shape

If the crown is ground to ensure flush alignment with the club head main body, then the visual alignment is improved, but the carbon fiber texture is damaged and aesthetic quality deteriorates

Engineering Contradiction:

Improvevisual alignmentVSAvoiddamage to carbon fiber texture

Core Design Contradiction:

ShapeVSObject-affected harmful factors

Solution Approach 1:

The crown is pre-formed with a protrusion that protrudes upwardly from the adhering portion, with its outer surface already configured to be substantially flush with the outer shell surface of the club head main body. This preliminary shaping eliminates the need for subsequent grinding operations that would damage the carbon fiber texture.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The design converts the potential harm of grinding operations into a benefit by pre-configuring the crown geometry during manufacturing. The protrusion structure is intentionally designed to require no post-assembly grinding, thereby protecting the carbon fiber texture while achieving perfect visual alignment.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Area of stationary object

If the crown is made thinner to expose more carbon fiber texture, then the aesthetic quality is improved, but the structural integrity and alignment capability deteriorate

Engineering Contradiction:

Improveexposed area of carbon fiberVSAvoidstructural integrity

Core Design Contradiction:

Area of stationary objectVSStrength

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

4Area of stationary object

If the crown is made thinner to expose more carbon fiber texture, then the aesthetic quality is improved, but the alignment flushness with the club head main body deteriorates

Engineering Contradiction:

Improveexposed area of carbon fiberVSAvoidalignment flushness

Core Design Contradiction:

Area of stationary objectVSShape

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The crown features an asymmetric thickness distribution with a protruding adhering portion that is thicker than the exposing portion. This asymmetric design enables the adhering portion to provide sufficient material for alignment while the thinner exposing portion maximizes carbon fiber visibility.

Inventive Principle:

Principle #4Asymmetry

Data Source

PatentUS11439876B1Golf club head

Publication Date: 2022.09.13 ADVANCED INT MULTITECH CO LTD

AI summary

A golf club head includes a club head main body and a crown. The club head main body includes a main portion, and a receiving portion connected to the main portion. The main portion has an outer shell surface, and an upright side wall surface interconnecting the outer shell surface and the receiving portion. The crown includes a covering portion, and a protrusion protruding upwardly from an outer periphery of the covering portion, adjoining the side wall surface, and having a to-be-ground surface flushing with the outer shell surface. A height difference between the protrusion and the covering portion prevents the covering portion from being ground.