Side Airbag Inflator Mounting Bracket for Stable Assembly
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Solution Overview
Problem
Existing side airbag devices face challenges in easily fixing the inflator to the base member, which complicates the assembly process and can lead to unstable airbag deployment.
Innovation Solution
The proposed side airbag device includes a mounting bracket with an inflator fixing portion and a base member fixing portion, allowing for easy assembly by fixing the inflator to the mounting bracket and then attaching the bracket to the base member. This configuration ensures stable deployment of the airbag.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the inflator is directly fixed to the base member, then the structure is simple, but the assembly process becomes complicated and time-consuming
Solution Approach 1:
The mounting structure is divided into separate components: a mounting bracket with inflator fixing portion and base member fixing portion, allowing the inflator to be mounted separately onto the bracket, which is then attached to the base member. This segmentation enables pre-assembly of the inflator-bracket subassembly, significantly improving assembly ease without compromising structural integrity
Solution Approach 2:
The mounting bracket serves as an intermediary component between the inflator and the base member. It provides dedicated fixing portions for both the inflator (via inflator fixing portion) and the base member (via base member fixing portion), facilitating easy mounting while maintaining a simple overall structure
2Object-affected harmful factors
If the base member is surrounded by a case or cushion pad, then the airbag is protected, but the inflator becomes difficult to fix to the base member
Solution Approach 1:
The mounting bracket is designed with pre-formed fixing portions that enable the inflator to be securely attached to the base member before the base member is surrounded by the case or cushion pad. This preliminary mounting action ensures the inflator is firmly fixed while maintaining access during assembly, and the surrounding protective structures are then added without interfering with the fixed inflator
3Speed
If the airbag is allowed to inflate rapidly, then the deployment is fast, but the airbag inflates violently and unstably
Solution Approach 1:
The mounting bracket and base member structure are designed to provide preliminary constraint and guidance for the airbag during inflation. The bracket positioning and structural support prevent violent or unstable inflation by guiding the expansion direction, thereby stabilizing the deployment process while maintaining rapid inflation speed
Data Source
AI summary
A side airbag device with a base member for an inflator to be easily fixed thereto, and a method for manufacturing same is provided. The side airbag device includes: an airbag; an inflator configured to supply the airbag with gas; a base member configured to accommodate the airbag and the inflator, and to be fixed to a vehicle body; an outer covering member configured to cover at least a front side of the base member to form a front-facing interior surface; and a mounting bracket. The mounting bracket includes an inflator fixing portion to which the inflator is fixed and a base member fixing portion which is located in a position different from a position of the inflator fixing portion and fixed to the base member. The base member includes, at a left or right side portion thereof, a bracket fixing portion to which the mounting bracket is fixed.