Low-Profile Igniter Assembly Side-Entry Connector
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Solution Overview
Problem
Conventional airbag inflator igniter assemblies have a large profile, which increases the overall size of the inflator and occupies valuable space, limiting the accommodation of additional components and potentially reducing performance.
Innovation Solution
A low-profile igniter assembly with a side-entry connector configuration, where the connector slides into the adapter transversely to the conductors, reducing the overall height by 40-44% and allowing for a more compact design, enabling the inclusion of larger components or maintaining performance in a smaller geometry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional automotive connector is used in the igniter assembly, then the electrical connection is reliable, but the overall size of the igniter assembly becomes large
Solution Approach 1:
The patent changes the dimensional arrangement by extending conductors axially from the ignition portion and receiving the connector radially at right angles. This orthogonal arrangement allows the connector to be disposed within the circular opening of the adapter without increasing the overall axial length, effectively utilizing three-dimensional space to reduce the igniter assembly's footprint while maintaining reliable electrical connections.
2Volume of moving object
If the igniter assembly size is reduced, then the inflator footprint is minimized, but the connector insertion becomes more difficult
Solution Approach 1:
The radial insertion path from the side of the adapter provides clear access for connector installation without requiring the connector to pass through the axial space constrained by the ignition portion. This side-entry approach through the circular opening simplifies the insertion operation while maintaining the compact axial profile of the igniter assembly.
Data Source
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AI summary
Low-profile igniter assemblies adapted for use with low-profile inflators as well as conventionally sized inflators are disclosed. Such igniter assemblies can comprise an adaptor, an ignition portion and a plurality of conductors coupled to the ignition portion and extending in a first direction from the ignition portion to an opening of the adapter. A connector is adapted to be slid into the opening in a second direction which is transverse to the first direction associated with the extension of the conductors from the ignition portion to the opening of the adapter. Igniter assemblies can be coupled with a body of an inflatable airbag system inflator, which inflator body may enclose a quantity of gas generant. Methods of making inflators adapted for use with inflatable airbag cushion systems are also included.