Belt Ratcheting System with Dual Rollers
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Solution Overview
Problem
Conventional seat belt systems lack a combination of mechanical assist for tightening, continuous feed capability, quick release, and spool-free operation, making them inefficient for securing passengers or cargo, especially in environments requiring high tension or dirty conditions.
Innovation Solution
A ratcheting securement system with opposing rollers that provide mechanical tightening assistance without a spool, allowing continuous belt feeding and quick release, where the active belt is rolled between rollers that compress to prevent slippage and can be loosened by separating the rollers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a spool-based system is used to manage belt length, then quick release capability is improved, but device complexity increases and mechanical tightening assist is lost
Solution Approach 1:
The patent removes the spool component entirely from the system, extracting only the essential function of belt management. The belt feeds directly through the buckle without being wound on a spool, eliminating the complexity of spool mechanisms while maintaining quick release capability through a straightforward feed-through design.
Solution Approach 2:
The patent divides the belt management function into separate components: the buckle housing, the ratcheting mechanism, and the feed-through path. This segmentation allows each component to perform its specific function independently, simplifying the overall system while maintaining effectiveness.
2Reliability
If a ratcheting system is used to maintain belt tension, then tension maintenance is improved, but ease of operation deteriorates due to lack of quick adjustment
Solution Approach 1:
The ratcheting mechanism incorporates a dynamic release component that can transition between locked and unlocked states. This allows the system to maintain tension reliably during normal operation while enabling quick adjustment when needed, resolving the contradiction between tension maintenance and ease of operation.
Solution Approach 2:
The patent introduces a release component as an intermediary between the user and the ratcheting mechanism. This mediator allows quick disengagement of the ratchet lock without requiring complex operations, enabling fast belt adjustment while preserving the reliability of tension maintenance during secured operation.
3Productivity
If mechanical assist for tightening is added to the belt system, then tightening efficiency is improved, but device complexity increases
Solution Approach 1:
The patent employs curved or angled surfaces within the buckle mechanism to create mechanical advantage during tightening. The geometry of the ratchet teeth and engagement surfaces is designed to amplify the user's input force, providing efficient tightening without requiring complex mechanical assist devices.
Solution Approach 2:
The ratcheting mechanism operates in a dimensional space that allows force multiplication through angular engagement. By designing the ratchet teeth with specific angles and the pawl to engage at an optimized dimension, the system achieves high tightening efficiency through geometric mechanical advantage rather than complex mechanical components.
4Ease of operation
If a lay-flat belt exit is implemented, then ease of operation is improved, but reliability deteriorates due to lack of tension maintenance
Solution Approach 1:
The patent merges the lay-flat exit design with the ratcheting tension maintenance system. The belt exits the buckle in a flat, accessible manner while simultaneously engaging the ratchet mechanism that maintains tension. This combination allows the belt to be easily accessible for operation while ensuring reliable tension maintenance through the integrated ratcheting system.
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 system effectively secures passengers or cargo with mechanical assistance, allowing for easy tension adjustment and quick release without the need for a spool, accommodating any belt length and maintaining tension without special belt features, enhancing usability in various environments.
Implementation Method 1
The two opposed rollers allow for frictional tightening of the belt either in normal use or in tightening as this condition squeezes the active belt between them
Implementation Method 2
an eccentric causing a first or 'top' roller to tend toward the direction of force, and thus compressing the active belt between them strongly preventing slippage
Data Source
AI summary
A ratcheting belt system with opposed rollers and quick release capability provides two opposed rollers which frictionally allow a tightening belt of a safety harness, cargo securement system, between themselves compressively, via a manually operated ratcheting handle such that the excess length of belt distal to the active portion used for securement is passed through the system substantially parallel to the active portion of belt, and need not be contained on a spool. A ratchet mechanism prevents back-out of the belt through the buckle, a manually operated lever provides for opening of the rollers away from each other and easy, quick exit of the driver, passenger, or cargo from securement.