Sensor Movable Member Stability via Segmented Fixed Protrusions
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Solution Overview
Problem
Existing sensors face challenges in maintaining stable detection due to excessive movement of movable members, which can lead to size issues and instability in signal extraction, particularly when using stoppers that increase sensor size or result in surface contact that is difficult to separate.
Innovation Solution
The sensor design incorporates a first fixed member with protruding portions positioned on a diagonal line between movable portions, allowing for easy separation and maintaining stability by contacting the movable member only when necessary, thus preventing surface adhesion and enhancing detection stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If stoppers are used to prevent excessive movement of the movable member, then the sensor size increases, but the detection stability is improved
Solution Approach 1:
The fixed member is divided into multiple counter portions (first fixed counter portion and second fixed counter portion) positioned at different locations. This segmentation allows the movable member to be constrained at multiple points simultaneously, providing stable detection without requiring a single large stopper structure, thus resolving the contradiction between detection stability and sensor size.
2Device complexity
If the movable member contacts the fixed member continuously, then the sensor structure is simple, but surface adhesion occurs making separation difficult
Solution Approach 1:
The sensor design allows the movable member to dynamically transition between contacting and non-contacting states with the fixed member. During normal operation, the movable member contacts the fixed counter portions for stability, but can separate easily when needed. This dynamic interaction resolves the contradiction between structural simplicity and ease of separation by making contact conditional rather than continuous.
3Adaptability or versatility
If the movable member moves excessively, then the sensor can accommodate larger ranges, but signal extraction stability deteriorates
Solution Approach 1:
The fixed member is designed with specific counter portions at strategically located positions to provide localized constraint points. These localized features constrain the movable member at critical positions while allowing movement in other directions, achieving both adequate movement range and stable signal extraction by applying constraints only where necessary.
Data Source
AI summary
According to one embodiment, a sensor includes a movable member including a first movable portion and a second movable portion, and a first fixed member. At least a portion of the first fixed member is between the first movable portion and the second movable portion. The first fixed member includes a first fixed counter portion opposing the first movable portion, and a second fixed counter portion opposing the second movable portion. The first fixed counter portion includes a first fixed protruding portion protruding toward the first movable portion. The second fixed counter portion includes a second fixed protruding portion protruding toward the second movable portion.