Web Management System for Child Safety Seats
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Solution Overview
Problem
Child safety seats often have excess web material that lies loose in vehicles, interfering with mechanical components and requiring manual adjustment, which is inconvenient and inefficient.
Innovation Solution
A web management system with a retraction member and roller mechanism that automatically retracts excess web material, using elastic material to bias the retraction and securely stow the web, allowing for adjustable and snug fit without manual management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If straps are designed with excess length to provide adjustability for different vehicle configurations and child sizes, then adaptability is improved, but excess web material lies loose in the vehicle and interferes with mechanical components
Solution Approach 1:
The excess web material is extracted and separated from the functional restraining portion. The web is routed through a channel in the seat structure, with only the necessary length exposed for adjustment while the excess is contained within the seat body, eliminating interference with mechanical components.
Solution Approach 2:
The web management system nests the excess web material within the seat structure itself. The channel provides a pathway that guides the web through the seat body, effectively hiding and securing the excess length inside the seat's internal geometry while maintaining external adjustability.
2Ease of operation
If manual management of excess web is required, then ease of operation deteriorates, but device complexity is reduced
Solution Approach 1:
The system provides self-service web management through the integrated channel structure. The channel automatically guides and contains the excess web as it is adjusted, eliminating the need for manual gathering or securing of loose web material while maintaining a relatively simple overall structure.
3Adaptability or versatility
If web material is allowed to lie loose for adjustability, then adaptability is improved, but reliability deteriorates due to potential interference with operational components
Solution Approach 1:
The potentially harmful loose web is extracted from the operational space. By routing the web through a dedicated channel and containing the excess within the seat structure, the system ensures that only the necessary functional portion is accessible, eliminating reliability concerns while preserving adjustability.
Solution Approach 2:
The channel structure preemptively prevents the web from becoming loose and interfering with components. The guided pathway ensures that as the web is adjusted, it remains contained and controlled throughout the adjustment range, preventing potential interference before it can occur.
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 manages excess web material by automatically retracting it, providing a neat and secure fit that adapts to different vehicle configurations and child sizes, enhancing safety and convenience.
Implementation Method 1
The retraction member is configured to expand and retract in length between a first length and a shorter second length. The expansion and retraction are biased in favor of retraction to the second length.
Data Source
AI summary
A web management system includes a base that is configured to be secured to the seat of a vehicle. A retraction member has a first end and a second end. The first end is fixedly secured to an anchor attached to the base. The retraction member is configured to expand and retract in length between a first length and a shorter second length. The expansion and retraction are biased in favor of retraction to the second length. A web having at least a portion is fixedly secured to the base. A roller is attached to the second end of the retraction member. The roller is configured to slidably couple the web to the retraction member. Retraction of the retraction member takes up slack in the web.