Vehicle Front Bracket Layout for Faster Airbag Impact Detection
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Solution Overview
Problem
Conventional vehicle front structures experience a delay in impact detection by airbag sensors due to the breaking of the bumper support bracket during frontal collisions, leading to potential airbag malfunctions.
Innovation Solution
A vehicle front structure design featuring an upper beam, a bracket extending outward and curving rearward with an airbag sensor attached, and a shock absorbing bracket to facilitate immediate impact detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the airbag sensor is provided on the radiator side frame, then the structure is simple, but the impact detection accuracy is reduced due to the interval before impact value transmission
Solution Approach 1:
The patent introduces a bracket as an intermediary component between the bumper support bracket and the airbag sensor. The bracket includes a first portion connected to the bumper support bracket and a second portion connected to the airbag sensor, creating a direct transmission path for impact values. This intermediary structure eliminates the detection delay that would otherwise occur with direct mounting on the radiator side frame, while maintaining overall structural simplicity.
2Measurement precision
If the airbag sensor is provided on the bracket, then the impact detection accuracy is improved, but the device complexity increases
Solution Approach 1:
The patent merges the bracket with the existing bumper support bracket assembly. The bracket's first portion is integrated with the bumper support bracket, and the second portion extends to provide sensor mounting. This merging approach allows the airbag sensor to be mounted on the bracket without creating a completely separate structural system, thereby improving impact detection accuracy while minimizing the increase in overall device complexity.
Data Source
AI summary
A vehicle front structure includes: an upper beam to which a headlight is fixed; a bracket installed side by side with the upper beam and formed to extend outward in a vehicle width direction from one end thereof fixed to a bulkhead of a vehicle, curve rearward at a point halfway to an outer end in the vehicle width direction of the vehicle, and extend rearward to the other end thereof fixed to a lower member of the vehicle; and an airbag sensor provided on the bracket.