Helmet Visor Pivoting Mechanism with Oblique Opening
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Solution Overview
Problem
Conventional motorcycle helmets with pivot-mounted face screens suffer from imprecise pivoting guidance, require tools for detachment, and complex systems that pose risks during high-speed falls.
Innovation Solution
A helmet design featuring a cap with an oblong arcuate opening and a rotatable connecting member that securely pivots the screen, allowing only authorized movement around the axis of rotation, facilitated by a retaining device with a spring mechanism for easy handling and enhanced safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional screw mounting means are used, then the screen can be attached to the cap, but the pivoting guidance is imprecise due to the small diameter of the screw
Solution Approach 1:
The mounting system is divided into separate functional components: hinge devices for pivoting and retaining devices for secure attachment. The retaining device includes a plate with oblong arcuate opening and a connecting member with gib, separating the pivoting function from the securing function to achieve precise guidance without requiring complex integrated structures.
Solution Approach 2:
The gib acts as an intermediary element between the connecting member and the plate. It provides precise pivoting guidance by fitting within the oblong arcuate opening while allowing controlled rotation, mediating between the screen and cap to achieve accurate pivoting without direct contact between large surfaces.
2Reliability
If sophisticated connection systems with many parts are used, then the screen can be securely attached, but the system becomes difficult to disassemble for cleaning or replacement
Solution Approach 1:
The connecting member is designed to move dynamically between a retracted position (for easy disassembly) and a protruding position (for secure attachment). The spring mechanism enables the connecting member to be easily pushed or pulled to transition between these states, allowing simple one-handed operation for both securing and releasing the screen.
Solution Approach 2:
The spring-loaded connecting member with manual actuation enables the user to easily transition between attached and detached states without tools. The system serves itself by using the spring force to maintain secure attachment during normal use while allowing quick release when the user applies force to the actuating element.
3Ease of operation
If the retaining device uses a simple screw mechanism, then the device complexity is low, but a tool is required to detach the screen from the cap
Solution Approach 1:
The traditional screw-based mechanical fastening system is replaced with a spring-loaded connecting member that uses elastic force instead of threaded mechanical engagement. This substitution eliminates the need for tools while providing secure attachment, replacing the screw mechanism with a more sophisticated but user-friendly spring-based system.
4Ease of operation
If the mounting means allows easy disassembly, then the screen can be easily removed for cleaning, but the screen may accidentally separate during high-speed falls
Solution Approach 1:
The connecting member is designed to move dynamically between a retracted position (allowing easy removal) and a protruding position (preventing accidental separation). During normal use and impacts, the spring force keeps the connecting member protruding and locked. During intentional removal, the user applies force to push the connecting member back, allowing controlled disassembly while maintaining security during unexpected events.
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 design provides precise pivoting, easy assembly/disassembly, and improved safety by preventing accidental screen detachment during falls, ensuring secure attachment and easy operation even when wearing the helmet.
Implementation Method 1
a spring mechanism for easy handling and enhanced safety
Data Source
Figure 1
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AI summary
The helmet (1) has a reversible assembling unit including a retaining device (7) arranged on a side. The device has a plate formed with an oblong opening (58) centered on a rotation axis (XX). A connection member (30) is moved on a shield (3) along an axis (YY). The device occupies an engagement configuration in which the member is secured to the plate and partially passes the opening side by side, so that the member crosses the opening while pivoting the shield opposite to a cap and a disengagement configuration in which the member is disengaged from the plate.