Winding Tool Hub Assembly for Torsion Spring Safety

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Solution Overview

Problem

Tightening torsion springs of sectional overhead doors is hazardous and time-consuming, even for professionals, requiring a safer and more efficient method.

Innovation Solution

A winding tool with a hub assembly and translational sprocket system that allows easy attachment to the torsion spring, enabling users to safely and efficiently wind the spring using a handle-activated mechanism, providing a 50:1 gear ratio for efficient rotation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional winding methods are used for torsion springs, then the spring can be tightened, but the process is extremely dangerous and time-consuming

Engineering Contradiction:

ImprovesafetyVSAvoidtime required

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent introduces a winding tool as an intermediary device between the user and the torsion spring. This tool includes a hub assembly that attaches to the winding cone, providing a safe interface that eliminates direct hand contact with dangerous spring components while enabling controlled winding through a handle mechanism

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces dangerous manual winding operations with a mechanical system consisting of a hub assembly, winding cone, and handle mechanism. The mechanical advantage provided by the 50:1 gear ratio reduces the physical effort required while eliminating the need for users to manually handle high-tension spring components

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Productivity

If traditional winding methods are used for torsion springs, then the spring can be tightened, but professionals spend a great deal of time and effort

Engineering Contradiction:

Improvewinding speedVSAvoideffort required

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The patent replaces manual winding operations with a mechanical advantage system featuring a 50:1 gear ratio between the handle and the winding cone. This mechanical substitution allows one rotation of the handle to produce fifty rotations of the winding cone, dramatically increasing winding speed while reducing the physical effort required

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent incorporates a dynamic handle mechanism that converts rotational motion into controlled winding action. The handle can be rotated by the user and translates this rotation through the gear system to produce the necessary winding motion, allowing for controlled and efficient spring tightening

Inventive Principle:

Principle #15Dynamics

3Ease of operation

If users directly handle torsion spring components, then winding can be performed, but extreme danger is present

Engineering Contradiction:

Improveease of useVSAvoiddanger

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a hub assembly as an intermediary component that attaches to the winding cone instead of requiring direct handling of spring components. This intermediary device provides a safe interface that eliminates exposure to high-tension dangers while maintaining ease of operation through a simple handle rotation mechanism

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent designs the hub assembly with safety features that prevent accidental release or malfunction before they can cause harm. The secure attachment mechanism and controlled winding process provide protective measures in advance, cushioning users from the inherent dangers of torsion spring operation

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

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

Enables users to securely and quickly tighten torsion springs with minimal effort and risk, reducing the time and danger associated with the process.

Implementation Method 1

providing a 50:1 gear ratio for efficient rotation

Methodology Applied

Scientific EffectMechanical Advantage: Mechanical Advantage

Data Source

PatentUS8567567B1Winding tool for torsion spring for sectional garage door

Publication Date: 2013.10.29 TURNER ERNEST SCOTT

AI summary

A winding tool for tightening a torsion spring for a sectional overhead door. The winding tool features two half hub assembles that wrap around an overhead door shaft, wherein a translational sprocket is disposed on the hub assemblies. The hub assemblies connect to the winding cone of a torsion spring via fingers that engage the hub assemblies. A winding box is removably attached to the hub assemblies. The winding box features a worm gear that engages the translational sprocket. A handle bar can be rotated with a drill to cause rotation of the worm gear. Rotation of the worm gear causes rotation of the translational sprocket and ultimate winding of the torsion spring.