Reel Locking Mechanism Prevents Media Tangling

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Solution Overview

Problem

Existing reel designs for wound flexible media, such as cable and wire, often lead to tangling issues due to the propensity for the media to rewind or reverse direction during use.

Innovation Solution

A reel assembly with a locking mechanism that allows rotation in one direction while preventing rotation in the opposite direction, utilizing protrusions on the end plates that align with apertures in the flanges to lock the reel in place when reversed.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the reel is designed to rotate freely in both directions, then the ease of operation is improved, but the media becomes tangled due to reversing or re-winding during use

Engineering Contradiction:
Improveease of unwindingVSAvoidmedia tangling
Core Design Contradiction:
Ease of operationVSObject-generated harmful factors

Solution Approach 1:

The locking mechanism transitions between locked and unlocked states dynamically. The protrusions on the end plates engage with corresponding features on the flanges to lock rotation in one direction, while allowing free rotation in the unwinding direction. This dynamic locking state prevents media tangling while maintaining ease of unwinding operation.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The reversing capability is extracted and removed from the reel system through the locking mechanism. By preventing rotation in the winding direction, the harmful reversing action is eliminated, leaving only the useful unwinding rotation capability.

Inventive Principle:
Principle #2Taking out (Extraction)

2Object-generated harmful factors

If a locking mechanism is added to prevent reversing, then the media tangling is reduced, but the device complexity increases

Engineering Contradiction:
Improvemedia tanglingVSAvoidreel structure complexity
Core Design Contradiction:
Object-generated harmful factorsVSDevice complexity

Solution Approach 1:

The locking mechanism is segmented into discrete protrusions on the end plates that can independently engage with corresponding features on the flanges. This segmentation allows for a simple, modular locking system that prevents reversing without adding significant complexity to the overall reel structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The locking mechanism is designed to automatically engage and disengage based on the rotation direction. The protrusions self-lock when the reel attempts to rotate in the winding direction, and automatically unlock when unwinding is required, eliminating the need for additional control systems or complex actuation mechanisms.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS20250066155A1Reel arrangement and locking mechanism
Publication Date: 2025.02.27 ANDERSON TRAVIS HLDG LLC
  • US20250066155A1 patent drawing
  • US20250066155A1 patent drawing
  • US20250066155A1 patent drawing

AI summary

An apparatus and method for dispensing a wound media including one or more reels with an associated locking mechanism. The locking mechanism can allow one or more of the reels to be rotated in one particular direction, while preventing one or more of the reels from being rotated in the opposite direction.