Vehicular Rocker Sensor Placement Resin Segmentation
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Solution Overview
Problem
Existing vehicular object detection systems have limited flexibility in sensor placement due to structural constraints, which can hinder detection accuracy and increase the risk of sensor damage from external factors.
Innovation Solution
A vehicular object detection device featuring a rocker section with resin configuration members that allow for wider placement of object detection sensors, including a shock-absorbing member and movable lid to protect the sensor from foreign matter and collisions, while maintaining detection precision and aesthetic appeal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the object detection sensor is provided in a position corresponding to the recess in the outer handle of the rear door, then the sensor can be protected from external damage, but the position where the sensor is provided is limited
Solution Approach 1:
The rocker section is divided into multiple rocker configuration members (first, second, third, and fourth members) that can be independently configured. This segmentation allows the sensor to be placed at various positions along the rocker section while maintaining structural integrity and protection capabilities.
Solution Approach 2:
The rocker section serves multiple functions: it provides structural support for the sensor, offers protection from external damage, enables flexible positioning along the vehicle side, and maintains aesthetic appearance. This multi-functionality resolves the contradiction between protection and flexibility.
2Measurement precision
If a rocker configuration member made of resin is disposed at the vehicle width direction outer side of the object detection sensor, then electromagnetic wave reflection is suppressed, but the structural strength may be reduced
Solution Approach 1:
The rocker section combines resin configuration members (for electromagnetic wave transparency and detection accuracy) with metal configuration members (for structural strength and rigidity). This composite structure resolves the contradiction between detection precision and structural strength by assigning different materials to different functional requirements.
3Measurement precision
If the object detection sensor is exposed to detect objects, then detection capability is improved, but the sensor is vulnerable to external damage from foreign matter
Solution Approach 1:
The lid is configured to be movable between an open state (allowing detection) and a closed state (protecting the sensor). This dynamic structure allows the system to adapt between detection capability and protection based on operational requirements, resolving the contradiction between exposure and vulnerability.
4Measurement precision
If a detection opening is formed in the rocker configuration member, then the sensor can transmit and receive electromagnetic waves, but the exterior appearance is compromised
Solution Approach 1:
The movable lid allows the detection opening to be open during operation for electromagnetic wave transmission and closed during non-operation to maintain aesthetic appearance. This dynamic concealment resolves the contradiction between detection functionality and exterior appearance.
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
Enhances the flexibility of sensor placement, improves detection accuracy, reduces risk of damage during collisions, and maintains the vehicle's external quality.
Implementation Method 1
an object detection sensor that is disposed in the rocker section and that detects an object at at least one out of a side or the lower side of the vehicle
Implementation Method 2
the rocker configuration member disposed at the vehicle width direction outer side of the object detection sensor is configured by a resin, or the rocker configuration member disposed at the vehicle width direction outer side of the object detection sensor is formed with a detection opening
Data Source
AI summary
A vehicular object detection device including: a rocker section that extends substantially along a vehicle front-rear direction, at a lower side of a side section of a vehicle, and that is configured by plural rocker configuration members; and an object detection sensor that is disposed in the rocker section and that detects an object at at least one of a side or the lower side of the vehicle, wherein: among the plural rocker configuration members, a rocker configuration member disposed at a vehicle width direction outer side of the object detection sensor is configured by a resin, or the rocker configuration member disposed at the vehicle width direction outer side of the object detection sensor is formed with a detection opening that is open toward a vehicle outer side at a position corresponding to a transceiver of the object detection sensor.