Rear Side Airbag Bracket Layout for Easier Interior Mounting
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Solution Overview
Problem
The existing rear side airbag device mounting system is complicated due to the placement of mounting brackets, making it difficult to mount the airbag device from the interior of the vehicle, particularly because one bracket is located farther than the bottom wall, leading to increased complexity and potential accessibility issues.
Innovation Solution
The rear side airbag device features a mounting bracket with anchor portions located on the inner side of the inflator mount portion, allowing for easier access and mounting, with the first anchor portion above and the second anchor portion below the inflator, and narrower widths in the front-rear direction to facilitate weight reduction and improved deployment control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the other bracket is located on a laterally outer side with respect to the bottom wall, then the mounting structure provides stable support, but the mounting process becomes complicated and difficult to access from the vehicle interior
Solution Approach 1:
The patent inverts the conventional bracket arrangement by positioning both anchor portions on the laterally inner side of the inflator mount portion, rather than having one bracket on the outer side. This inversion makes the mounting operation accessible from the vehicle interior while maintaining structural stability through the optimized inner-side configuration.
Solution Approach 2:
The patent positions the first anchor portion above the inflator and the second anchor portion below the inflator, utilizing the vertical dimension rather than lateral extension. This dimensional change allows both anchor portions to be accessible from the vehicle interior while providing adequate mounting support.
2Ease of operation
If the first anchor portion and second anchor portion are located at the front and rear of the inflator, then the mounting is simplified, but the device size in the front-rear direction increases
Solution Approach 1:
The patent transitions from a front-rear arrangement of anchor portions to a vertical arrangement (above and below the inflator), utilizing the upward-downward dimension. This dimensional change maintains mounting simplicity while reducing the device's footprint in the front-rear direction, achieving downsizing.
3Strength
If the mounting bracket has wider walls and anchor portions in the front-rear direction, then the structural strength is improved, but the overall weight of the device increases
Solution Approach 1:
The patent optimizes the dimensional parameters of the mounting bracket by configuring the walls and anchor portions to have narrower widths in the front-rear direction. This parameter change reduces material usage and device weight while maintaining adequate structural strength through the optimized vertical arrangement of components.
Data Source
AI summary
Provided is a rear side airbag device that can be mounted with ease. A rear side airbag device is located between a vehicle body and a rear seat, and includes an airbag, an inflator configured to supply gas into the airbag, and a mounting bracket to which the inflator is fixed. The mounting bracket includes an inflator mount portion to which the inflator is fixed, and a first anchor portion and a second anchor portion that are to be fixed to other members, whereas the first anchor portion and the second anchor portion are located on a laterally inner side with respect to the inflator mount portion.