Elastic Cord Bead Counter for Golf Swing Tracking

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Solution Overview

Problem

Existing swing number recording tools for ball games, such as golf and tennis, face issues with beads shifting during strong swings, leading to inaccurate recordings and requiring a hard receiving face on the hand, which limits their use without a glove.

Innovation Solution

A swing number recording tool using a cord material that does not stretch axially but expands diametrically, elastically interlocking with bead holes to hold beads in position, allowing for reliable recording without a glove and easy assembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If an axially stretchable cord is used to hold beads against the hand, then the beads are held in position during normal play, but the beads shift during strong swings due to centrifugal force

Engineering Contradiction:

Improvebead position stabilityVSAvoidswing number recording accuracy

Core Design Contradiction:

ReliabilityVSMeasurement precision

Solution Approach 1:

The invention changes the elasticity direction parameter of the cord from axial (lengthwise) to diametrical (cross-sectional). The cord material does not stretch axially but stretches in the diametrical direction, creating radial outward pressure that firmly holds beads against the hand surface, preventing centrifugal displacement during strong swings.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention applies different mechanical properties to different directions: the cord is designed to be rigid axially (no stretching) to maintain length and positioning, while being elastic diametrically (radial expansion) to provide holding pressure. This anisotropic property distribution optimizes both stability and measurement accuracy.

Inventive Principle:

Principle #3Local quality

2Reliability

If a hard receiving face on the back of the hand is required for the cord to push on beads, then the beads are held securely, but the tool cannot be used without a glove

Engineering Contradiction:

Improvebead holding securityVSAvoidusage flexibility with or without glove

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The invention changes the force distribution parameter by using diametrical elasticity to create radial pressure that concentrates holding force on a small contact area. This allows the cord to effectively interact with soft skin surfaces without requiring a hard receiving face, enabling use with or without gloves.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The cord's diametrical expansion creates a curved, radial pressure distribution against the beads and hand surface. This spherical-like pressure pattern allows effective contact with the curved contours of the hand and bead holes, providing secure holding without requiring a flat hard surface.

Inventive Principle:

Principle #14Spheroidality (Curvature)

3Reliability

If strands are passed from opposite directions through bead holes to hold beads, then beads are reliably restrained during body rotation, but assembling the tool becomes complicated and manufacturing costs increase

Engineering Contradiction:

Improvebead restraint during rotationVSAvoidassembly simplicity and manufacturing cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The invention extracts the complex multi-strand configuration and replaces it with a single cord having diametrical elasticity. The cord is simply passed through bead holes in one direction, eliminating the need for opposite-direction threading while maintaining reliable bead restraint through radial pressure.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The invention changes the structural parameter from multiple rigid strands to a single elastic cord. The diametrical elasticity of the single cord provides the same restraining function during body rotation as the complex multi-strand system, but with much simpler assembly and lower manufacturing cost.

Inventive Principle:

Principle #35Parameter changes

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 tool ensures accurate recording of swings even during strong movements, as beads are securely held by the cord's diametrical elasticity, and can be assembled at low cost without a hard receiving face on the hand.

Implementation Method 1

the cord is formed from a cord material that does not stretch in an axial direction but that stretches in a diametrical direction and that is normally urged in a diameter-expanding direction, and the cord is designed to constrict in diameter so as to elastically interlock with the walls of the holes of the beads

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS11173371B2Tool for recording number of swings in ball game

Publication Date: 2021.11.16 TOUCH ONE CORP

AI summary

This tool for recording the number of swings in a ball game includes a plurality of holed beads 20 and a cord 30 that is passed through the holes 20H of the beads 20 and that holds the beads 20 so that the beads 20 can slide, the cord 30 is formed from a cord material that does not stretch in an axial direction but that stretches in a diametrical direction and that is normally urged in a diameter-expanding direction, and the cord 30 constrict in diameter so as to elastically interlock with the walls of the holes 20H of the beads 20 and hold the beads 20 in position, whereby the beads do not shift even if a player strongly shakes the tool, the number of swings in the ball game can be reliably recorded and confirmed, and the tool is easily assembled.