Deployable Windscreen with Pyrotechnic Mounting for Motorcycles
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Solution Overview
Problem
Powered two- and three-wheelers lack effective occupant protection during accidents, as existing windscreens do not adequately deploy to enhance rider safety beyond normal operational conditions.
Innovation Solution
A deployable windscreen arrangement with a telescoping mounting system and pyrotechnic deployment mechanism that automatically moves from a normal use position to a deployed position in response to accident events, utilizing gas generators and tethers to position the windscreen for enhanced impact protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a windscreen is provided for a motor vehicle to protect the rider from wind and debris, then rider comfort and protection from environmental factors is improved, but the windscreen does not provide adequate protection during accident events
Solution Approach 1:
The windscreen is designed to be movable between a first position (normal operation) and a second position (deployed for accident protection). The mounting arrangement allows the windscreen to dynamically change its position based on operational conditions, transitioning from a compact state during normal riding to an extended protective state during accident events.
Solution Approach 2:
The pyrotechnic arrangement is pre-positioned and pre-charged to automatically deploy the windscreen upon detection of an accident event. This preliminary preparation ensures that the windscreen can be deployed instantly when needed, providing immediate protection without requiring manual intervention or complex sensing during the accident itself.
2Reliability
If a deployable windscreen arrangement with pyrotechnic mechanism is added to provide accident protection, then rider safety during impacts is improved, but device complexity increases
Solution Approach 1:
The pyrotechnic deployment mechanism is extracted as a separate, dedicated component from the overall windscreen system. This allows the complex deployment function to be isolated and optimized independently, while the windscreen structure itself remains relatively simple. The telescoping assembly is also separated into distinct sections that can be independently manufactured and assembled.
Solution Approach 2:
The mounting arrangement is divided into multiple segments including the telescoping assembly with first and second portions, and the pyrotechnic arrangement as a separate unit. This segmentation allows each component to be optimized independently and simplifies manufacturing, assembly, and maintenance while maintaining the overall functional integration of the system.
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 deployable windscreen arrangement effectively reduces occupant velocity and absorbs energy during impacts, providing enhanced protection by deploying upwardly and maintaining a desired orientation to mitigate collision forces.
Implementation Method 1
The pyrotechnic arrangement is operative to automatically deploy the windscreen from the first position to the second position in response to a predetermined accident event
Data Source
AI summary
A windscreen arrangement for a motor vehicle includes a windscreen and a mounting arrangement. The mounting arrangement is operative to mount the windscreen to a body of the motor vehicle for deployment from a first position to a second position. In the second position, the windscreen is upwardly displaced from the first position.