Foreign Matter Sensor Elongated Hollow Body Detection Range
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Solution Overview
Problem
Existing foreign matter detection sensors for vehicle door opening and closing systems have a reduced detection range due to the folding of lead wires, which limits their ability to detect foreign matter effectively in the longitudinal direction.
Innovation Solution
A foreign matter detection sensor with an elongated elastic hollow insulating body and separate electrode wires, where power supply members with direction-changing sections extend from the electrode connecting portions to increase the detection range by reducing the protrusion of lead wires and incorporating a sealing member to secure the connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the lead wire is folded back in a substantially U-shape at the lower end of the sensor section, then the lead wire can be drawn into the door panel, but the length of the sensor section is reduced in the longitudinal direction
Solution Approach 1:
The power supply member extends in multiple directions including a direction intersecting the longitudinal direction of the sensor section, utilizing three-dimensional space to route the lead wire without reducing the sensor section's longitudinal length. This dimensional approach allows the lead wire to be drawn into the door panel while preserving the full sensor detection range.
2Device complexity
If the sensor section length is reduced to accommodate the folded lead wire, then the manufacturing space is optimized, but the foreign matter detection range is reduced
Solution Approach 1:
The power supply member is divided into multiple sections with different orientations: a first section extending in the longitudinal direction of the sensor section, and a second section extending in a direction intersecting the longitudinal direction. This segmentation allows the lead wire to be routed efficiently without compromising the sensor section's full length and detection capability.
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
The solution increases the detection range in the longitudinal direction of the sensor section, enhancing the ability to detect foreign matter while reducing manufacturing costs and improving the sensor's design efficiency.
Implementation Method 1
The sensor section detects foreign matter by receiving external force from the foreign matter and being elastically deformed
Data Source
AI summary
A foreign matter detection sensor includes a sensor section, power supply members, a sealing member, and includes an elastic elongated hollow insulating body with separated electrode wires inside the insulating body. The sensor section includes a first end and a second end and detects foreign matter by receiving external force from the foreign matter and being elastically deformed. The power supply members are electrically connected to the electrode wires at the second end of the sensor section via electrode connecting portions. Each power supply member includes a direction changing section, extending from an associated electrode connecting portion in a direction intersecting the longitudinal direction of the sensor section and further extends in a direction toward the first end of the sensor section. The sealing member on the second end of the sensor section seals the electrode connecting portions, the direction changing sections, and one end of the hollow body.