Vehicle Bumper Back Beam with Integrated Inflator Protector
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Solution Overview
Problem
Existing impact absorbing devices for vehicles face challenges in efficiently installing and inflating exterior airbags at bumper back beams, which complicates the manufacturing process and increases costs, while also requiring additional components like bumper upper rails to prevent pedestrian override during collisions.
Innovation Solution
An impact absorbing device featuring a bumper back beam with an integrated inflator protector and airbag module, where the airbag cushion is longitudinally inflated and guided by upper and lower flanges to absorb impact, simplifying the structure and reducing the need for additional components by integrating the airbag module directly onto the bumper back beam.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If an exterior airbag is disposed at the front side of the bumper back beam, then collision injury to pedestrian is reduced, but the manufacturing process becomes complicated and costs increase
Solution Approach 1:
The patent integrates the airbag module directly with the bumper back beam by providing a mounting structure that combines both components into a unified assembly. The airbag module includes a housing that mounts to the bumper back beam, with the airbag cushion positioned to deploy from the bumper assembly, thereby merging two separate components into one integrated unit that simplifies manufacturing while maintaining pedestrian protection functionality
2Object-affected harmful factors
If an exterior airbag is disposed at the front side of the bumper back beam, then collision injury to pedestrian is reduced, but device complexity increases
Solution Approach 1:
The airbag module is merged with the bumper back beam assembly through an integrated mounting structure. The housing of the airbag module is designed to mount directly to the bumper back beam, creating a unified structural unit that reduces overall device complexity while maintaining the airbag's pedestrian protection function
Solution Approach 2:
The bumper back beam assembly is designed to serve multiple functions: it provides structural support for the bumper, integrates the mounting structure for the airbag module, and works with the crash box for impact absorption. This multi-functionality reduces the need for separate dedicated components, thereby reducing device complexity while maintaining pedestrian protection
3Object-affected harmful factors
If bumper upper rails are added to prevent pedestrian override, then pedestrian safety is improved, but manufacturing costs and device complexity increase
Solution Approach 1:
The bumper back beam is designed with an integrated structure that serves multiple functions: it provides the mounting structure for the airbag module, supports the crash box, and incorporates features that prevent pedestrian override. By making the bumper back beam a multi-functional component, the patent eliminates the need for separate bumper upper rails, thereby reducing device complexity and component count while maintaining pedestrian safety
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 solution effectively reduces collision injuries and damages by simplifying the manufacturing process, reducing costs, and eliminating the need for extra components like bumper upper rails, while ensuring efficient airbag deployment and enhanced vehicle safety.
Implementation Method 1
An airbag module is disposed at the inflator protector and expanded in the width direction of the vehicle
Implementation Method 2
The exterior airbag may form an airbag cushion for absorbing impact when the vehicle collides with the pedestrian, thereby reducing the collision injury to the pedestrian using a shock absorbing effect of the airbag cushion for absorbing impact
Implementation Method 3
the bumper back beam, which extends further forward of the vehicle than the crash box, may absorb and reduce impact energy while being deformed by receiving impact energy
Implementation Method 4
the crash box also absorbs and reduces impact energy while being deformed by receiving impact energy
Data Source
AI summary
An impact absorbing device for a vehicle according to an exemplary embodiment of the present disclosure includes a bumper back beam extending in a width direction of a vehicle, and an inflator protector mounted at a front surface of the bumper back beam to cover the front surface of the bumper back beam in a longitudinal direction of the vehicle. An airbag module disposed at the inflator protector is expanded and inflated in the width direction of the vehicle.The impact absorbing device for a vehicle can facilitate manufacturing of a bumper back beam, simplify a structure, and effectively absorbs impact.