Sliding Chin Guard Fixing Structure for Dual-Mode Helmets
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Solution Overview
Problem
Conventional helmets lack a stable and simple means for fixing the chin guard in both full face and open face modes, often featuring complex structures that increase manufacturing costs.
Innovation Solution
A rotating body fixing means for a helmet that includes a fixing portion slidably disposed on the helmet body, which varies in protrusion extent as it slides, and is guided by a guide portion, using elastic members and protrusions/slits to securely fix the chin guard in different positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional fixing means is used for the chin guard, then the chin guard can be fixed in full face and open face modes, but the structure becomes complicated and manufacturing cost increases
Solution Approach 1:
The fixing portion is designed to dynamically change its protrusion extent from the helmet body as it slides along the guide portion. This dynamic adjustment allows the fixing mechanism to adapt between full face and open face modes without requiring a complex multi-component system, resolving the contradiction between fixing reliability and structural complexity
Solution Approach 2:
The fixing mechanism is segmented into distinct functional components: the fixing portion that protrudes and contacts the rotating body, and the guide portion that constrains the sliding motion. This segmentation allows each component to perform its specific function efficiently while keeping the overall structure simple and manufacturable
2Reliability
If a conventional fixing means is used for the chin guard, then the chin guard can be fixed in full face and open face modes, but the manufacturing cost increases due to complicated structure
Solution Approach 1:
The dynamic sliding mechanism allows a single fixing portion to provide stable fixation in both full face and open face modes through positional adjustment rather than mechanical complexity. This reduces the number of parts that need to be manufactured and assembled, thereby lowering manufacturing costs while maintaining fixing reliability
Solution Approach 2:
The fixing portion serves multiple functions: it provides fixation in full face mode, transitions to open face mode, and guides the rotating body's movement. This multi-functionality eliminates the need for separate fixing mechanisms for each mode, simplifying manufacturing and reducing costs
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
Enables stable fixation of the chin guard in both full face and open face modes with a simple structure, reducing manufacturing complexity and costs.
Implementation Method 1
the fixing portion is provided with an elastic member, and when the elastic member comes into contact with the guide portion, the elastic member compresses the fixing portion in an outward direction of the helmet body
Data Source
AI summary
The present disclosure relates to a rotating body fixing means for a helmet. The rotating body fixing means for a helmet, according to the present disclosure, is provided at the helmet comprising a helmet body (10) and a rotating body (20) rotatably coupled to the helmet body (10), and comprises a fixing part (100), which is slidably disposed at one side of the helmet body (10), slides such that the protruding degree thereof from the helmet body (10) varies, and comes in contact with the rotating body (20) when protruding from the helmet body (10).