Helmet Visor Soft Lip Dampens Rebound Noise
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Solution Overview
Problem
Existing protective helmets with visors have a significant gap between the visor and the helmet shell in the parking position, allowing branches to get caught, and when the visor transitions between positions, it often rebounds and generates noise due to the spring-biased locking mechanism.
Innovation Solution
The visor is equipped with a soft, resilient lip that dampens momentum and prevents rebound when hitting the helmet shell, providing a sealing effect to prevent rain ingress and noise reduction, and is designed to maintain close proximity to the helmet shell in both end positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the visor is equipped with a spring-biased locking mechanism to retain positions, then the visor can be reliably held in operating and parking positions, but the visor rebounds and generates noise when hitting the helmet shell in end positions
Solution Approach 1:
A damping element is introduced between the visor and the helmet shell to cushion the impact before the visor hits the shell in end positions. This element absorbs the impact energy, preventing rebound and reducing noise while maintaining the spring-biased locking mechanism's position retention function.
Solution Approach 2:
A damping element acts as an intermediary between the visor and the helmet shell, mediating the interaction during impact. This intermediary component absorbs the shock and prevents direct contact between the visor and shell, eliminating noise and rebound while allowing the locking mechanism to function properly.
2Ease of operation
If the visor is positioned at a distance from the helmet shell in parking position, then the visor can be easily accessed and positioned, but branches can get caught between the visor and helmet shell
Solution Approach 1:
The visor is designed with dynamic positioning capability, allowing it to be easily moved between operating and parking positions while maintaining controlled proximity to the helmet shell. The spring-biased locking mechanism enables easy positioning while the damping element ensures the visor stays close enough to prevent branch entanglement.
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 soft lip ensures safe, silent operation by preventing rebound and noise, while maintaining a seal to keep rain out, enhancing user safety and comfort.
Implementation Method 1
the lip is made of a soft resilient material which is shock absorbing as well as sealing
Implementation Method 2
the lip of the visor damps the momentum of motion so that a rebound is substantially prevented and the noise generated during the impact on the helmet shell is substantially damped
Implementation Method 3
each of the bearing devices has a spring-biased locking element associated with it by means of which the visor is retained in a releasable manner by frictional force in the operating position and in the parking position
Implementation Method 4
the visor is retained in a releasable manner by frictional force in the operating position and in the parking position
Data Source
AI summary
Visor for a protective helmet, having two retaining arms and two bearing devices for the retaining arms which are attached to a helmet shell of a helmet in order to pivot the visor between two end positions corresponding to an operational position and a parked position in which the visor is folded up and is disposed on the outer surface of the helmet shell. The visor is provided with a soft lip, preferably made from TPU or TPE, at the location where it comes into contact with the helmet shell in the end positions. When the visor is manually activated to pivot out of an end position, the visor is accelerated by resilient pretensioning in the direction of the other end position until the lip is in contact with the helmet shell substantially without recoil. The lip damps the movement momentum of the visor and additionally has a sealing function.