Helmet Shield Pivot with Movable Axis for Gasket Sealing
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Solution Overview
Problem
Existing motorcycle helmets with rotating shields suffer from an inability to form a tight seal between the shield and the helmet edge due to the shield's circular motion, leading to potential damage to the gasket.
Innovation Solution
A rotating means for a helmet that allows the shield to rotate with a rearward movement of the rotation axis relative to the helmet body, incorporating a movement means and elastic means to facilitate forward and rearward movement of the rotation axis, ensuring a tight seal and preventing gasket damage during closure and opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the shield rotates around a fixed rotation axis, then the shield can make simple circular motion, but it cannot form a tight seal between the shield and the edge of the open portion
Solution Approach 1:
The rotation axis is made movable rather than fixed. The rotation axis can move forward and backward along the arc-shaped guide surface, allowing the rotational center to dynamically adjust during shield rotation. This dynamic adjustment enables the shield to maintain contact with the gasket edge and form a tight seal, while still allowing simple circular motion when the axis is stationary.
2Reliability
If the shield rotates around a fixed rotation axis, then the rotation mechanism is simple, but the gasket at the edge of the open portion is damaged by rubbing of the shield against the gasket
Solution Approach 1:
The movable rotation axis allows the rotational center to shift forward and backward during operation. When the shield rotates to close the open portion, the rotation axis moves to reduce rubbing contact with the gasket, thereby preventing gasket damage while still enabling the shield to form a seal at the appropriate position.
Solution Approach 2:
The arc-shaped guide surface acts as an intermediary mechanism between the shield and the gasket. It controls the movement of the rotation axis along a predetermined arc path, mediating the interaction between the shield and gasket to achieve both sealing and reduced friction.
3Reliability
If the rotation axis moves rearward during shield rotation, then a tight seal is formed between the shield and the edge of the open portion, but the movement mechanism adds complexity
Solution Approach 1:
The elastic member automatically pushes the rotation axis rearward during shield rotation without requiring external control mechanisms. The elastic force is generated by the deformation of the elastic member itself, making the system self-regulating and reducing the need for additional complex control mechanisms.
Solution Approach 2:
The elastic member replaces complex mechanical control systems with a simple elastic force mechanism. Instead of using motors, sensors, or control algorithms to move the rotation axis, the patent uses the elastic deformation and recovery of the elastic member to automatically achieve the required axis movement.
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 solution provides a tight seal between the shield and the helmet edge during closure, preventing gasket damage and enhancing the helmet's functionality and durability.
Implementation Method 1
an elastic means to provide the movement means with an elastic force in a rearward direction of the helmet body
Data Source
AI summary
The present disclosure relates to a rotating means for a helmet, and the rotating means for the helmet according to the present invention comprises a rotary shaft (100) which allows a shield (30) to be rotatably coupled to a helmet body (10) so that an opening portion (20) of the helmet body (10) is opened/closed by the shield (30), and when the shield (30) is rotated in the direction of closing the opening portion (20), the rotary shaft (100) is moved to the rear direction with respect to the helmet body (10).