Vehicle Sensor Mounting Structure for Stable Road Surface Detection
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Solution Overview
Problem
The existing mounting structures for road surface condition detectors on vehicle bumpers suffer from low rigidity, leading to resonance and decreased detection accuracy, and potential drooping due to aging fixing means, affecting the precision of road surface condition detection.
Innovation Solution
A mounting structure for a vehicle sensor that fixes the road surface condition detector to a frame member located frontward of the front wheel, utilizing a bracket made of metal to enhance rigidity and stability, with an air intake opening below the detector to prevent dust accumulation and ensure accurate detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the road surface condition detector is mounted on the bumper, then the installation is simple and accessible, but the low rigidity of the bumper causes resonance and decreases detection accuracy
Solution Approach 1:
The patent introduces a bracket as an intermediary component between the bumper and the road surface condition detector. This bracket serves as a mediator that transfers the mounting function from the low-rigidity bumper to a high-rigidity support structure, eliminating resonance while maintaining installation simplicity. The bracket is specifically designed to be fixed to the vehicle body frame rather than directly to the bumper, thus solving the contradiction between easy installation and detection accuracy.
2Ease of operation
If the road surface condition detector is mounted on the bumper, then the mounting location is convenient, but the bumper droops under its own weight due to aging of fixing means, affecting detection accuracy
Solution Approach 1:
The bracket acts as an intermediary that decouples the detector from the aging bumper structure. By fixing the bracket to the vehicle body frame (which has superior structural stability) rather than directly to the bumper, the system maintains reliable mounting over time. The bracket transfers the load-bearing function from the aging bumper to the robust vehicle frame, preventing droop and maintaining detection accuracy throughout the vehicle's service life.
Solution Approach 2:
The patent shifts the mounting dimension from the bumper (exterior component) to the vehicle body frame (structural component). This dimensional change in the mounting hierarchy moves the detector from a location subject to bumper aging and droop to a location on the rigid vehicle frame, thereby improving long-term mounting stability while maintaining operational convenience through the bracket interface.
3Measurement precision
If a rigid mounting structure is used to prevent resonance, then detection accuracy improves, but the device complexity increases
Solution Approach 1:
The mounting system is segmented into distinct functional components: the bumper (original mounting surface), the bracket (rigid support element), and the road surface condition detector (sensing device). This segmentation allows the rigid bracket to be independently designed and installed only where structural support is needed, rather than making the entire mounting system complex. The bracket serves as a focused rigidization element that prevents resonance without requiring complex modifications to the overall vehicle structure.
Data Source
AI summary
A mounting structure of a vehicle sensor includes: an exterior member provided at a front side of a vehicle body; a frame member configured to support the exterior member or a drive source for driving a vehicle; and a road surface condition detector configured to detect a road surface condition at a front side of the vehicle. The road surface condition detector is fixed to a frame member located frontward of a front wheel.