External Airbag Sensor Mounting via Deployment Guide
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Solution Overview
Problem
Existing external airbag systems face challenges in simultaneously installing sensors and airbag modules on the front end of a back beam due to overlapping components, which complicates their operation and effectiveness in vehicle collisions, particularly for pedestrian protection.
Innovation Solution
An external airbag apparatus with a sensor mounted in the bumper, featuring a deployment guide with an absorption structure that transfers compression forces to the sensor, allowing the airbag module to be installed on the back beam, enabling effective impact sensing and absorption without overlapping components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sensor and airbag module are mounted on the front end of the back beam, then pedestrian protection is improved, but the installation becomes difficult due to overlapping components
Solution Approach 1:
The patent divides the mounting locations by placing the sensor on the bumper and the airbag module on the back beam, separating their installation positions to eliminate overlapping and simplify assembly while maintaining pedestrian protection functionality
Solution Approach 2:
The deployment guide serves as an intermediary component that connects the bumper and back beam, enabling the sensor to be mounted on the bumper while still facilitating airbag deployment through the back beam area without direct overlap between sensor and airbag module
2Force
If the absorption structure is added to the deployment guide, then impact absorption is improved, but the device complexity increases
Solution Approach 1:
The absorption structure is merged with the deployment guide by forming ribs directly on the deployment guide body, combining the deployment function and impact absorption function into a single integrated component rather than adding separate absorption elements
Solution Approach 2:
The absorption structure uses localized rib features with varying heights and densities at specific locations on the deployment guide, providing enhanced impact absorption where needed while maintaining simplicity in other areas
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 configuration allows for efficient deployment of the airbag cushion during collisions, reducing pedestrian injury by effectively sensing and absorbing impact forces, while allowing for separate installation of the sensor and airbag module, enhancing operational simplicity and protection.
Implementation Method 1
an absorption portion may be formed between one end and a middle end of the deployment guide and the absorption portion may be deformed by the compression force applied to the bumper when impact is applied to the bumper to absorb the impact
Implementation Method 2
a sensor disposed between the deployment guide and the back beam configured to sense impact when pressed by the deployment guide during impact on the bumper
Data Source
AI summary
Disclosed is an external airbag apparatus. The apparatus includes, a back beam disposed on one surface directed toward a bumper on which an airbag module is disposed. The apparatus additionally includes a deployment guide disposed between the bumper and the back beam, both ends of which are coupled to the back beam, and a middle end of which is supported on the bumper. Furthermore, the apparatus includes a sensor disposed between the deployment guide and the back beam to sense impact when pressed by the deployment guide during impact to the bumper.