Helmet Shield Rotation Stopper for Stable Open Positions
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Solution Overview
Problem
Existing motorcycle helmets lack a stable mechanism to stop the shield at a predetermined position during rotation.
Innovation Solution
A shield rotation control mechanism using a support member and a stopper means with elasticity to stabilize the shield's position by providing an elastic force, incorporating features like hooks, slots, and serrated portions to ensure precise stopping and rotation control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a shield rotation mechanism is provided without a stopper means, then the shield can rotate freely, but the shield cannot be stably stopped at a predetermined position
Solution Approach 1:
A stopper means is introduced as an intermediary component between the support member and the base member. The stopper means includes a stopper protrusion that engages with a stopper recess on the base member, providing a simple mechanical stopping mechanism that ensures the shield can be stably positioned at predetermined angles without requiring complex control systems
Solution Approach 2:
The stopper means utilizes elastic deformation of the support member to enable engagement and disengagement of the stopper protrusion with the stopper recess. By changing the elastic parameter of the support member, the system achieves stable positioning during rotation while maintaining ease of operation
2Reliability
If a stopper means with elasticity is added to stop the support member, then the shield can be stably stopped at predetermined position, but the device complexity increases
Solution Approach 1:
The stopping function is extracted as a separate, simple mechanical feature (stopper protrusion and stopper recess) from the overall rotation mechanism. This modular approach allows the stopper means to be added without significantly increasing the complexity of the main rotation mechanism, as it consists of simple geometric features rather than complex components
Solution Approach 2:
The stopper means provides localized stopping capability at specific predetermined positions during rotation. The stopper protrusion and recess are positioned at specific locations to engage only at desired angular positions, providing stable stopping exactly where needed without affecting the overall simplicity of the rotation mechanism
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 mechanism allows the shield to be stably stopped at predetermined positions, enhancing user convenience and safety by preventing unintended movement during operation.
Implementation Method 1
the stopper means includes an elastic means to provide the elastic force to rotate the stopper means around the rotation axis in one direction
Implementation Method 2
the support member is stopped by the elastic force of the stopper means
Data Source
AI summary
The present disclosure relates to a shield rotation controlling means. The shield rotation controlling means according to the present disclosure comprises: a support member (100) supporting a shield (20) and rotating about a base member (300); and a stopping means (200) coupled to the support member (100) and provided with elasticity in the direction of the base member (300), the support member (100) stopped by means of the elasticity of the stopping means (200).