Helmet Buckle Rotational Locking to Prevent Accidental Release
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Solution Overview
Problem
Existing helmet buckles can unintentionally unfasten during use due to malfunctions, posing safety risks during activities like motorcycle riding or skiing.
Innovation Solution
A helmet buckle design that requires the operating part to be rotated beyond a predetermined angle to separate the locking part from the band part, incorporating a base part, locking part, and an operating part with engaging portions and a torsion spring for secure fastening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the buckle is designed to unfasten simply by pushing the elastic support portion, then the ease of operation is improved, but the reliability deteriorates due to accidental unfastening during use
Solution Approach 1:
The buckle transitions from a static single-action mechanism to a dynamic multi-stage mechanism. The operating part must rotate through multiple angles to overcome different engagement states (first engaging portion to second engaging portion, then to third engaging portion), creating a progressive locking system that prevents accidental unfastening while maintaining ease of intentional operation.
Solution Approach 2:
The engagement mechanism is segmented into multiple distinct engaging portions (first, second, and third engaging portions) at different rotational positions. This segmentation creates multiple security stages that must be sequentially overcome, transforming a single-point failure mechanism into a multi-stage security system that maintains reliability during use.
2Reliability
If the operating part is rotated beyond a predetermined angle to separate the locking part, then the reliability is improved by preventing accidental unfastening, but the device complexity increases
Solution Approach 1:
Multiple engagement portions (first, second, and third engaging portions) are merged into a single integrated operating part structure. This consolidation achieves enhanced reliability through multi-stage engagement while avoiding the complexity of separate independent locking mechanisms, as all engagement stages are accomplished through one continuous rotational motion of the operating part.
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
Prevents accidental unfastening by ensuring the locking part remains secured until the operating part is rotated beyond a specific angle, enhancing safety and reliability.
Implementation Method 1
a torsion spring to provide an elastic force to the operating part in a direction toward the band part
Data Source
AI summary
The present disclosure relates to a helmet buckle. The helmet buckle according to the present disclosure comprises: a base part (100) for guiding a band part (400) to slide when the band part (400) advances or retreats; a locking part (200) rotatably coupled to the base part (100), and fastened to the band part (400); and an operating part (300) which is rotatably coupled to the base part (100), and which rotates the locking part (200) so as to separate the locking part (200) from the band part (400) if the operating part rotates at least a predetermined angle with respect to the base part (100).