Half Chin Bar Release Mechanism for Safer Helmet Detachment
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Solution Overview
Problem
Existing helmets with half chin bars face safety issues during accidents, such as attachment to internal components causing torsional impulses, difficulty in quick removal, and the need for tools to detach the chin bar, which can complicate rescue operations and potentially cause further injuries.
Innovation Solution
A helmet with a half chin bar that is selectively connectable/disconnectable via an external manual drive mechanism, allowing easy removal without tools, using a coupling and manual drive portion accessible from the outside.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the half chin bar is made fixed and integral with the helmet shell, then protection and structural integrity are improved, but safety during accidents deteriorates due to potential attachment to internal components causing torsional impulses
Solution Approach 1:
The chin bar is divided into a first portion (fixed to shell) and a second portion (movable relative to first portion), allowing the structure to segment during impact to prevent torsional forces from reaching the user while maintaining overall structural integrity
2Object-affected harmful factors
If the half chin bar is made removable, then safety during accidents is improved, but reliability deteriorates due to potential detachment during normal use
Solution Approach 1:
The movable second portion is pre-configured with a free end that can be pulled to initiate detachment, and the connection mechanism is designed to require deliberate action to detach, preventing accidental detachment during normal use while enabling quick removal when needed
3Device complexity
If the half chin bar is made fixed, then device complexity is reduced, but ease of repair deteriorates as the entire helmet must be replaced after chin bar damage
Solution Approach 1:
The chin bar is segmented into a first portion attached to the shell and a second movable portion, allowing the second portion to be replaced independently if damaged while the first portion and shell remain intact, enabling partial repair and helmet reuse
Data Source
AI summary
A helmet includes a shell and a half chin bar releasably connected to the shell. The half chin bar is selectively connectable and disconnectable to and from the shell by means of an attachment device. The attachment device includes a coupling portion and a manual drive portion for the complete release of said coupling portion. The manual drive portion is accessible from the outside of the shell and/or the outside of the half chin bar.