Airbag Gas Generator Deflector With Opposed Outflow Guidance
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Solution Overview
Problem
Existing deflectors for gas generators are complex and costly, requiring sophisticated airbags with additional components like calzones for effective gas flow and distribution, which increases material stress and complexity.
Innovation Solution
A simple and cost-effective deflector design with a substantially rectangular base and adjustable outflow regions, allowing for improved gas guidance and reduced mechanical and thermal load on airbags, compatible with existing diffusors, and enabling efficient filling of one or two airbags without the need for complex airbag designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex deflector design with additional components (calzones) is used, then gas flow guidance is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The deflector is segmented into a tubular base body and a separate gas discharge device that can be attached thereto. This segmentation allows the gas discharge device to be optimized for flow guidance while the base body maintains structural integrity, resolving the contradiction between effective gas flow guidance and overall device complexity
Solution Approach 2:
The deflector design with rectangular base and opposite outflow regions serves multiple functions: it guides gas flow in opposite directions, provides structural support, and enables compatibility with existing diffusors. This multi-functionality eliminates the need for additional calzone components while maintaining reliable gas flow guidance
2Reliability
If a complex deflector design with additional components is used, then gas flow distribution is improved, but manufacturing cost increases
Solution Approach 1:
The gas discharge device is merged with the tubular base body to form an integrated deflector assembly. This merging eliminates the need for separate calzone components while achieving effective gas flow distribution through the rectangular base design with opposite outflow regions, thereby reducing manufacturing cost
Solution Approach 2:
The deflector uses a simple rectangular base design that can be manufactured economically without requiring expensive heat-resistant and particle-resistant fabric calzones. This approach achieves effective gas flow distribution at lower manufacturing cost
3Volume of moving object
If a rectangular base design is used, then space utilization is improved, but compatibility with existing diffusors may be reduced
Solution Approach 1:
The deflector design incorporates adjustable outflow regions that can be configured to work with existing cylindrical diffusors while maintaining the space-saving rectangular base design. This dynamic adaptability allows the deflector to accommodate different diffuser geometries without sacrificing space utilization efficiency
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 deflector design reduces material stress on airbags, allows for precise geometric alignment, and ensures efficient gas flow with minimal bypass, enabling space-saving and cost-effective gas distribution while eliminating the need for complex airbag components.
Implementation Method 1
gas flows out of the gas generator or diffusor and/or deflector
Data Source
AI summary
A deflector for a diffusor of a gas generator of an airbag module is disclosed. The deflector comprises a substantially tubular deflector base body and a gas discharge device connected thereto, wherein the gas discharge device has a substantially rectangular base and two outflow regions on opposite sidewalls so that gas can flow substantially in opposite directions along the longitudinal axes of the tubular deflector base body out of the interior of the gas discharge device to the outside.