Safety Helmet Comfort Liner Webbing Adjustment Mechanism
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Solution Overview
Problem
Existing safety helmets require complex and time-consuming processes to adjust the comfort liner for optimal fit, leading to unsatisfactory comfort for users.
Innovation Solution
A safety helmet design featuring a webbing system between the shell and comfort liner, allowing users to adjust the overall dimensions of the comfort liner without fully removing it, using a webbing with a rear end activating tongue that can be constrained to the shell in multiple positions for different dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the comfort liner is replaced to adjust overall dimensions, then the comfort fit is improved, but the operation complexity and time required increase significantly
Solution Approach 1:
The webbing system enables dynamic adjustment of the comfort liner's position and overall dimensions within the helmet shell. The webbing can be moved to different locations (front, center, rear) and adjusted in length to change the liner's dimensions, allowing the same liner to adapt to different head sizes and preferences without replacement.
Solution Approach 2:
The webbing serves multiple functions: it suspends the comfort liner, allows position adjustment along the helmet's longitudinal axis, enables dimension adjustment by length modification, and provides secure anchoring. This single component replaces the need for multiple liner sizes and complex replacement procedures.
2Adaptability or versatility
If the comfort liner is fully removed from the shell for adjustment, then the dimensional adjustment is achieved, but the operation becomes more complex and time-consuming
Solution Approach 1:
The comfort liner is pre-suspended from the shell using the webbing system during manufacturing, with attachment points positioned at the front and rear portions of the shell. This preliminary setup allows users to quickly adjust dimensions by simply moving and repositioning the webbing rather than performing complex disassembly and reassembly operations.
3Adaptability or versatility
If multiple comfort liners with different thicknesses and shapes are provided, then the adaptability is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
Instead of providing multiple physical liners with different thicknesses and shapes, the invention changes the parameters of a single liner by adjusting its position and overall dimensions through the webbing system. The webbing's position and length can be modified to create different effective dimensions, allowing one liner to serve multiple purposes.
Data Source
AI summary
A safety helmet is disclosed having a shell and a comfort liner coupled to the inner surface of the shell. The comfort liner is constrained to the front part and to the rear part of the shell, and the helmet has a webbing arranged between the shell and the comfort liner along the upper median portion of the comfort liner. The webbing has a front end constrained to the front part of the comfort liner and a rear end to move the webbing with respect to the shell and cause consequently the change of the overall dimensions of the comfort liner inside the helmet. The webbing is constrained, with respect to the shell, in an operative position corresponding to the overall dimensions of the comfort liner inside the helmet.