Textile Deflector With Variable Outflow Cross-Sections
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Solution Overview
Problem
The existing airbag arrangements with deflector elements are complex due to the need for asymmetrical shapes to accommodate different gas generator positions, leading to multiple configurations required for various installation situations.
Innovation Solution
The deflector element is designed with connections arranged along its length to create different gas outflow cross-sections, allowing for a rectangular or cylindrical shape, where the position of these connections can be adjusted to accommodate different installation scenarios without altering the shape of the cut areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If asymmetrical shapes are used for the deflector element to accommodate different gas generator positions, then the gas bag can be inflated evenly in different installation situations, but the design complexity increases and multiple configurations are required
Solution Approach 1:
The deflector element is divided into multiple shell sections that can be connected together. The connections are arranged at different distances from the overflow opening to create different outflow cross-sections, allowing a single standardized deflector design to accommodate various installation situations without requiring multiple asymmetric configurations
Solution Approach 2:
The distance between connections and the overflow opening is varied to create different outflow cross-sections. By changing this geometric parameter, the same deflector element design can adapt to different gas generator positions and installation scenarios, eliminating the need for multiple asymmetric shapes
2Adaptability or versatility
If multiple configurations of deflector element are prepared for different installation situations, then all installation scenarios can be covered, but the manufacturing complexity and inventory requirements increase
Solution Approach 1:
A single universal deflector element design with standardized shell sections and cut areas can be used for all installation situations. By adjusting the position of connections between shell sections, the same deflector element serves multiple functions and accommodates different gas generator positions, eliminating the need to manufacture and stock multiple different configurations
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
This simplifies the design by allowing the same shape of the deflector element to be used across different configurations, reducing the need for multiple setups and enhancing adaptability.
Implementation Method 1
A gas generator 16, shown only schematically, is inserted into the gas inlet area 12 and releases gas when it is ignited, which gas flows through the overflow opening 15 into the gas outflow area 14
Data Source
AI summary
An airbag arrangement, comprising an airbag having at least one inflatable chamber and a gas generator disposed outside the inflatable chamber, wherein a deflector element, which is made of a textile fabric, is provided for connecting the gas generator to the inflatable chamber, said deflector element being connected to the gas generator and extending into the inflatable chamber and being designed as a tubular member, and the cross-section of the tubular deflector element being subdivided into a gas inlet area and a gas outflow area by way of connections of areas of the deflector element shell that forms the tube wall, said connections being disposed in the longitudinal direction of said deflector element, and the connections sparing an overflow opening for the gas stream running from the gas inlet area to the gas outflow area radially with respect to the longitudinal axis of the tubular deflector element, characterized in that the two opposing end openings (17) of the gas outflow area (14) each have a different outflow cross-section due to an asymmetrical shape for the outer shell section of the tubular deflector element (10) enveloping the gas outflow area (14).